adamc@1191
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1 (* Copyright (c) 2008-2010, Adam Chlipala
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2 * All rights reserved.
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3 *
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4 * Redistribution and use in source and binary forms, with or without
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5 * modification, are permitted provided that the following conditions are met:
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6 *
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7 * - Redistributions of source code must retain the above copyright notice,
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8 * this list of conditions and the following disclaimer.
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9 * - Redistributions in binary form must reproduce the above copyright notice,
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10 * this list of conditions and the following disclaimer in the documentation
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11 * and/or other materials provided with the distribution.
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12 * - The names of contributors may not be used to endorse or promote products
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13 * derived from this software without specific prior written permission.
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14 *
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15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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25 * POSSIBILITY OF SUCH DAMAGE.
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26 *)
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27
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28 structure Elaborate :> ELABORATE = struct
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29
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30 structure P = Prim
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31 structure L = Source
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32 structure L' = Elab
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33 structure E = ElabEnv
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34 structure U = ElabUtil
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35 structure D = Disjoint
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36
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37 open Print
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38 open ElabPrint
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39 open ElabErr
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40
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41 structure IS = IntBinarySet
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42 structure IM = IntBinaryMap
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43
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44 structure SK = struct
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45 type ord_key = string
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46 val compare = String.compare
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47 end
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48
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49 structure SS = BinarySetFn(SK)
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50 structure SM = BinaryMapFn(SK)
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51
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52 val basis_r = ref 0
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53 val top_r = ref 0
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54
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55 fun elabExplicitness e =
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56 case e of
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57 L.Explicit => L'.Explicit
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58 | L.Implicit => L'.Implicit
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59
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60 fun occursKind r =
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61 U.Kind.exists (fn L'.KUnif (_, _, r') => r = r'
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62 | _ => false)
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63
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64 exception KUnify' of kunify_error
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65
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66 fun unifyKinds' env (k1All as (k1, _)) (k2All as (k2, _)) =
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67 let
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68 fun err f = raise KUnify' (f (k1All, k2All))
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69 in
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70 case (k1, k2) of
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71 (L'.KType, L'.KType) => ()
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72 | (L'.KUnit, L'.KUnit) => ()
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73
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74 | (L'.KArrow (d1, r1), L'.KArrow (d2, r2)) =>
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75 (unifyKinds' env d1 d2;
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76 unifyKinds' env r1 r2)
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77 | (L'.KName, L'.KName) => ()
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78 | (L'.KRecord k1, L'.KRecord k2) => unifyKinds' env k1 k2
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79 | (L'.KTuple ks1, L'.KTuple ks2) =>
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80 ((ListPair.appEq (fn (k1, k2) => unifyKinds' env k1 k2) (ks1, ks2))
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81 handle ListPair.UnequalLengths => err KIncompatible)
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82
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83 | (L'.KRel n1, L'.KRel n2) =>
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84 if n1 = n2 then
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85 ()
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86 else
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87 err KIncompatible
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88 | (L'.KFun (x, k1), L'.KFun (_, k2)) =>
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89 unifyKinds' (E.pushKRel env x) k1 k2
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90
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91 | (L'.KError, _) => ()
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92 | (_, L'.KError) => ()
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93
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94 | (L'.KUnif (_, _, ref (SOME k1All)), _) => unifyKinds' env k1All k2All
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95 | (_, L'.KUnif (_, _, ref (SOME k2All))) => unifyKinds' env k1All k2All
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96
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97 | (L'.KTupleUnif (_, _, ref (SOME k)), _) => unifyKinds' env k k2All
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98 | (_, L'.KTupleUnif (_, _, ref (SOME k))) => unifyKinds' env k1All k
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99
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100 | (L'.KUnif (_, _, r1), L'.KUnif (_, _, r2)) =>
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101 if r1 = r2 then
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102 ()
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103 else
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104 r1 := SOME k2All
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105
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106 | (L'.KUnif (_, _, r), _) =>
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107 if occursKind r k2All then
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108 err KOccursCheckFailed
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109 else
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110 r := SOME k2All
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111 | (_, L'.KUnif (_, _, r)) =>
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112 if occursKind r k1All then
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113 err KOccursCheckFailed
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114 else
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115 r := SOME k1All
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116
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117 | (L'.KTupleUnif (_, nks, r), L'.KTuple ks) =>
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118 ((app (fn (n, k) => unifyKinds' env k (List.nth (ks, n-1))) nks;
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119 r := SOME k2All)
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120 handle Subscript => err KIncompatible)
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121 | (L'.KTuple ks, L'.KTupleUnif (_, nks, r)) =>
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122 ((app (fn (n, k) => unifyKinds' env (List.nth (ks, n-1)) k) nks;
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123 r := SOME k1All)
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124 handle Subscript => err KIncompatible)
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125 | (L'.KTupleUnif (loc, nks1, r1), L'.KTupleUnif (_, nks2, r2)) =>
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126 let
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127 val nks = foldl (fn (p as (n, k1), nks) =>
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128 case ListUtil.search (fn (n', k2) =>
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129 if n' = n then
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130 SOME k2
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131 else
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132 NONE) nks2 of
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133 NONE => p :: nks
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134 | SOME k2 => (unifyKinds' env k1 k2;
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135 nks)) nks2 nks1
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136
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137 val k = (L'.KTupleUnif (loc, nks, ref NONE), loc)
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138 in
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139 r1 := SOME k;
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140 r2 := SOME k
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141 end
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142
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143 | _ => err KIncompatible
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144 end
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145
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146 exception KUnify of L'.kind * L'.kind * kunify_error
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147
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148 fun unifyKinds env k1 k2 =
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149 unifyKinds' env k1 k2
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150 handle KUnify' err => raise KUnify (k1, k2, err)
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151
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152 fun checkKind env c k1 k2 =
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153 unifyKinds env k1 k2
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154 handle KUnify (k1, k2, err) =>
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155 conError env (WrongKind (c, k1, k2, err))
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156
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157 val dummy = ErrorMsg.dummySpan
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158
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159 val ktype = (L'.KType, dummy)
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160 val kname = (L'.KName, dummy)
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161 val ktype_record = (L'.KRecord ktype, dummy)
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162
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163 val cerror = (L'.CError, dummy)
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164 val kerror = (L'.KError, dummy)
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165 val eerror = (L'.EError, dummy)
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166 val sgnerror = (L'.SgnError, dummy)
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167 val strerror = (L'.StrError, dummy)
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168
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169 val int = ref cerror
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170 val float = ref cerror
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171 val string = ref cerror
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172 val char = ref cerror
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173 val table = ref cerror
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174
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175 local
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176 val count = ref 0
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177 in
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178
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179 fun resetKunif () = count := 0
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180
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181 fun kunif loc =
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182 let
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183 val n = !count
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184 val s = if n <= 26 then
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185 str (chr (ord #"A" + n))
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186 else
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187 "U" ^ Int.toString (n - 26)
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188 in
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189 count := n + 1;
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190 (L'.KUnif (loc, s, ref NONE), loc)
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191 end
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192
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193 end
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194
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195 local
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196 val count = ref 0
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197 in
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198
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199 fun resetCunif () = count := 0
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200
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201 fun cunif (loc, k) =
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202 let
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203 val n = !count
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204 val s = if n < 26 then
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205 str (chr (ord #"A" + n))
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206 else
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207 "U" ^ Int.toString (n - 26)
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208 in
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209 count := n + 1;
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210 (L'.CUnif (0, loc, k, s, ref NONE), loc)
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211 end
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212
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213 end
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214
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215 fun elabKind env (k, loc) =
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216 case k of
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217 L.KType => (L'.KType, loc)
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218 | L.KArrow (k1, k2) => (L'.KArrow (elabKind env k1, elabKind env k2), loc)
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219 | L.KName => (L'.KName, loc)
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220 | L.KRecord k => (L'.KRecord (elabKind env k), loc)
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221 | L.KUnit => (L'.KUnit, loc)
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222 | L.KTuple ks => (L'.KTuple (map (elabKind env) ks), loc)
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223 | L.KWild => kunif loc
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224
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225 | L.KVar s => (case E.lookupK env s of
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226 NONE =>
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227 (kindError env (UnboundKind (loc, s));
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228 kerror)
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229 | SOME n => (L'.KRel n, loc))
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230 | L.KFun (x, k) => (L'.KFun (x, elabKind (E.pushKRel env x) k), loc)
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231
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232 fun mapKind (dom, ran, loc)=
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233 (L'.KArrow ((L'.KArrow (dom, ran), loc),
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234 (L'.KArrow ((L'.KRecord dom, loc),
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235 (L'.KRecord ran, loc)), loc)), loc)
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236
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237 fun hnormKind (kAll as (k, _)) =
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238 case k of
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239 L'.KUnif (_, _, ref (SOME k)) => hnormKind k
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240 | _ => kAll
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241
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242 open ElabOps
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243
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244 fun elabConHead (c as (_, loc)) k =
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245 let
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246 fun unravel (k, c) =
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247 case hnormKind k of
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248 (L'.KFun (x, k'), _) =>
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249 let
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250 val u = kunif loc
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251
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252 val k'' = subKindInKind (0, u) k'
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253 in
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254 unravel (k'', (L'.CKApp (c, u), loc))
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255 end
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256 | _ => (c, k)
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257 in
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258 unravel (k, c)
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259 end
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260
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261 fun elabCon (env, denv) (c, loc) =
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262 case c of
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263 L.CAnnot (c, k) =>
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264 let
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265 val k' = elabKind env k
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266 val (c', ck, gs) = elabCon (env, denv) c
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267 in
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268 checkKind env c' ck k';
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269 (c', k', gs)
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270 end
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271
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272 | L.TFun (t1, t2) =>
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273 let
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274 val (t1', k1, gs1) = elabCon (env, denv) t1
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275 val (t2', k2, gs2) = elabCon (env, denv) t2
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276 in
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277 checkKind env t1' k1 ktype;
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278 checkKind env t2' k2 ktype;
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279 ((L'.TFun (t1', t2'), loc), ktype, gs1 @ gs2)
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280 end
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281 | L.TCFun (e, x, k, t) =>
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282 let
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283 val e' = elabExplicitness e
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284 val k' = elabKind env k
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285 val env' = E.pushCRel env x k'
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286 val (t', tk, gs) = elabCon (env', D.enter denv) t
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287 in
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288 checkKind env t' tk ktype;
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289 ((L'.TCFun (e', x, k', t'), loc), ktype, gs)
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290 end
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291 | L.TKFun (x, t) =>
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292 let
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293 val env' = E.pushKRel env x
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294 val (t', tk, gs) = elabCon (env', denv) t
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295 in
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296 checkKind env t' tk ktype;
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297 ((L'.TKFun (x, t'), loc), ktype, gs)
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298 end
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299 | L.TDisjoint (c1, c2, c) =>
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300 let
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301 val (c1', k1, gs1) = elabCon (env, denv) c1
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302 val (c2', k2, gs2) = elabCon (env, denv) c2
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303
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304 val ku1 = kunif loc
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305 val ku2 = kunif loc
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306
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307 val denv' = D.assert env denv (c1', c2')
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308 val (c', k, gs4) = elabCon (env, denv') c
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309 in
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310 checkKind env c1' k1 (L'.KRecord ku1, loc);
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311 checkKind env c2' k2 (L'.KRecord ku2, loc);
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312 checkKind env c' k (L'.KType, loc);
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313
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314 ((L'.TDisjoint (c1', c2', c'), loc), k, gs1 @ gs2 @ gs4)
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315 end
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316 | L.TRecord c =>
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317 let
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318 val (c', ck, gs) = elabCon (env, denv) c
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319 val k = (L'.KRecord ktype, loc)
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320 in
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321 checkKind env c' ck k;
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322 ((L'.TRecord c', loc), ktype, gs)
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323 end
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324
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325 | L.CVar ([], s) =>
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326 (case E.lookupC env s of
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327 E.NotBound =>
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328 (conError env (UnboundCon (loc, s));
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329 (cerror, kerror, []))
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330 | E.Rel (n, k) =>
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331 let
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332 val (c, k) = elabConHead (L'.CRel n, loc) k
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333 in
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334 (c, k, [])
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335 end
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336 | E.Named (n, k) =>
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337 let
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338 val (c, k) = elabConHead (L'.CNamed n, loc) k
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339 in
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340 (c, k, [])
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341 end)
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adamc@403
|
342 | L.CVar (m1 :: ms, s) =>
|
adamc@403
|
343 (case E.lookupStr env m1 of
|
adamc@403
|
344 NONE => (conError env (UnboundStrInCon (loc, m1));
|
adamc@403
|
345 (cerror, kerror, []))
|
adamc@403
|
346 | SOME (n, sgn) =>
|
adamc@403
|
347 let
|
adamc@403
|
348 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@403
|
349 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@403
|
350 NONE => (conError env (UnboundStrInCon (loc, m));
|
adamc@403
|
351 (strerror, sgnerror))
|
adamc@403
|
352 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@403
|
353 ((L'.StrVar n, loc), sgn) ms
|
adamc@403
|
354
|
adamc@403
|
355 val k = case E.projectCon env {sgn = sgn, str = str, field = s} of
|
adamc@403
|
356 NONE => (conError env (UnboundCon (loc, s));
|
adamc@403
|
357 kerror)
|
adamc@403
|
358 | SOME (k, _) => k
|
adamc@987
|
359 val (c, k) = elabConHead (L'.CModProj (n, ms, s), loc) k
|
adamc@403
|
360 in
|
adamc@987
|
361 (c, k, [])
|
adamc@403
|
362 end)
|
adamc@403
|
363
|
adamc@403
|
364 | L.CApp (c1, c2) =>
|
adamc@403
|
365 let
|
adamc@403
|
366 val (c1', k1, gs1) = elabCon (env, denv) c1
|
adamc@403
|
367 val (c2', k2, gs2) = elabCon (env, denv) c2
|
adamc@403
|
368 val dom = kunif loc
|
adamc@403
|
369 val ran = kunif loc
|
adamc@403
|
370 in
|
adamc@403
|
371 checkKind env c1' k1 (L'.KArrow (dom, ran), loc);
|
adamc@403
|
372 checkKind env c2' k2 dom;
|
adamc@403
|
373 ((L'.CApp (c1', c2'), loc), ran, gs1 @ gs2)
|
adamc@403
|
374 end
|
adamc@403
|
375 | L.CAbs (x, ko, t) =>
|
adamc@403
|
376 let
|
adamc@403
|
377 val k' = case ko of
|
adamc@403
|
378 NONE => kunif loc
|
adamc@623
|
379 | SOME k => elabKind env k
|
adamc@403
|
380 val env' = E.pushCRel env x k'
|
adamc@403
|
381 val (t', tk, gs) = elabCon (env', D.enter denv) t
|
adamc@403
|
382 in
|
adamc@403
|
383 ((L'.CAbs (x, k', t'), loc),
|
adamc@403
|
384 (L'.KArrow (k', tk), loc),
|
adamc@403
|
385 gs)
|
adamc@403
|
386 end
|
adamc@623
|
387 | L.CKAbs (x, t) =>
|
adamc@623
|
388 let
|
adamc@623
|
389 val env' = E.pushKRel env x
|
adamc@623
|
390 val (t', tk, gs) = elabCon (env', denv) t
|
adamc@623
|
391 in
|
adamc@623
|
392 ((L'.CKAbs (x, t'), loc),
|
adamc@623
|
393 (L'.KFun (x, tk), loc),
|
adamc@623
|
394 gs)
|
adamc@623
|
395 end
|
adamc@403
|
396
|
adamc@403
|
397 | L.CName s =>
|
adamc@403
|
398 ((L'.CName s, loc), kname, [])
|
adamc@403
|
399
|
adamc@403
|
400 | L.CRecord xcs =>
|
adamc@403
|
401 let
|
adamc@403
|
402 val k = kunif loc
|
adamc@403
|
403
|
adamc@403
|
404 val (xcs', gs) = ListUtil.foldlMap (fn ((x, c), gs) =>
|
adamc@403
|
405 let
|
adamc@403
|
406 val (x', xk, gs1) = elabCon (env, denv) x
|
adamc@403
|
407 val (c', ck, gs2) = elabCon (env, denv) c
|
adamc@403
|
408 in
|
adamc@403
|
409 checkKind env x' xk kname;
|
adamc@403
|
410 checkKind env c' ck k;
|
adamc@403
|
411 ((x', c'), gs1 @ gs2 @ gs)
|
adamc@403
|
412 end) [] xcs
|
adamc@403
|
413
|
adamc@403
|
414 val rc = (L'.CRecord (k, xcs'), loc)
|
adamc@403
|
415 (* Add duplicate field checking later. *)
|
adamc@403
|
416
|
adamc@403
|
417 fun prove (xcs, ds) =
|
adamc@403
|
418 case xcs of
|
adamc@403
|
419 [] => ds
|
adamc@403
|
420 | xc :: rest =>
|
adamc@403
|
421 let
|
adamc@403
|
422 val r1 = (L'.CRecord (k, [xc]), loc)
|
adamc@403
|
423 val ds = foldl (fn (xc', ds) =>
|
adamc@403
|
424 let
|
adamc@403
|
425 val r2 = (L'.CRecord (k, [xc']), loc)
|
adamc@403
|
426 in
|
adamc@403
|
427 D.prove env denv (r1, r2, loc) @ ds
|
adamc@403
|
428 end)
|
adamc@403
|
429 ds rest
|
adamc@403
|
430 in
|
adamc@403
|
431 prove (rest, ds)
|
adamc@403
|
432 end
|
adamc@403
|
433 in
|
adamc@403
|
434 (rc, (L'.KRecord k, loc), prove (xcs', gs))
|
adamc@403
|
435 end
|
adamc@403
|
436 | L.CConcat (c1, c2) =>
|
adamc@403
|
437 let
|
adamc@403
|
438 val (c1', k1, gs1) = elabCon (env, denv) c1
|
adamc@403
|
439 val (c2', k2, gs2) = elabCon (env, denv) c2
|
adamc@403
|
440 val ku = kunif loc
|
adamc@403
|
441 val k = (L'.KRecord ku, loc)
|
adamc@403
|
442 in
|
adamc@403
|
443 checkKind env c1' k1 k;
|
adamc@403
|
444 checkKind env c2' k2 k;
|
adamc@403
|
445 ((L'.CConcat (c1', c2'), loc), k,
|
adamc@403
|
446 D.prove env denv (c1', c2', loc) @ gs1 @ gs2)
|
adamc@403
|
447 end
|
adamc@621
|
448 | L.CMap =>
|
adamc@403
|
449 let
|
adamc@403
|
450 val dom = kunif loc
|
adamc@403
|
451 val ran = kunif loc
|
adamc@403
|
452 in
|
adamc@621
|
453 ((L'.CMap (dom, ran), loc),
|
adamc@621
|
454 mapKind (dom, ran, loc),
|
adamc@403
|
455 [])
|
adamc@403
|
456 end
|
adamc@403
|
457
|
adamc@403
|
458 | L.CUnit => ((L'.CUnit, loc), (L'.KUnit, loc), [])
|
adamc@403
|
459
|
adamc@403
|
460 | L.CTuple cs =>
|
adamc@403
|
461 let
|
adamc@403
|
462 val (cs', ks, gs) = foldl (fn (c, (cs', ks, gs)) =>
|
adamc@403
|
463 let
|
adamc@403
|
464 val (c', k, gs') = elabCon (env, denv) c
|
adamc@403
|
465 in
|
adamc@403
|
466 (c' :: cs', k :: ks, gs' @ gs)
|
adamc@403
|
467 end) ([], [], []) cs
|
adamc@403
|
468 in
|
adamc@403
|
469 ((L'.CTuple (rev cs'), loc), (L'.KTuple (rev ks), loc), gs)
|
adamc@403
|
470 end
|
adamc@403
|
471 | L.CProj (c, n) =>
|
adamc@403
|
472 let
|
adamc@403
|
473 val (c', k, gs) = elabCon (env, denv) c
|
adam@1302
|
474
|
adam@1302
|
475 val k' = kunif loc
|
adamc@403
|
476 in
|
adam@1302
|
477 if n <= 0 then
|
adam@1302
|
478 (conError env (ProjBounds (c', n));
|
adam@1302
|
479 (cerror, kerror, []))
|
adam@1302
|
480 else
|
adam@1302
|
481 (checkKind env c' k (L'.KTupleUnif (loc, [(n, k')], ref NONE), loc);
|
adam@1302
|
482 ((L'.CProj (c', n), loc), k', gs))
|
adamc@403
|
483 end
|
adamc@403
|
484
|
adamc@403
|
485 | L.CWild k =>
|
adamc@403
|
486 let
|
adamc@623
|
487 val k' = elabKind env k
|
adamc@403
|
488 in
|
adamc@403
|
489 (cunif (loc, k'), k', [])
|
adamc@403
|
490 end
|
adamc@403
|
491
|
adamc@403
|
492 fun kunifsRemain k =
|
adamc@403
|
493 case k of
|
adamc@403
|
494 L'.KUnif (_, _, ref NONE) => true
|
adam@1302
|
495 | L'.KTupleUnif (_, _, ref NONE) => true
|
adamc@403
|
496 | _ => false
|
adamc@403
|
497 fun cunifsRemain c =
|
adamc@403
|
498 case c of
|
adam@1326
|
499 L'.CUnif (_, loc, k, _, r as ref NONE) =>
|
adam@1326
|
500 (case #1 (hnormKind k) of
|
adam@1326
|
501 L'.KUnit => (r := SOME (L'.CUnit, loc); NONE)
|
adam@1326
|
502 | _ => SOME loc)
|
adamc@403
|
503 | _ => NONE
|
adamc@403
|
504
|
adamc@403
|
505 val kunifsInDecl = U.Decl.exists {kind = kunifsRemain,
|
adamc@403
|
506 con = fn _ => false,
|
adamc@403
|
507 exp = fn _ => false,
|
adamc@403
|
508 sgn_item = fn _ => false,
|
adamc@403
|
509 sgn = fn _ => false,
|
adamc@403
|
510 str = fn _ => false,
|
adamc@403
|
511 decl = fn _ => false}
|
adamc@403
|
512
|
adamc@403
|
513 val cunifsInDecl = U.Decl.search {kind = fn _ => NONE,
|
adamc@403
|
514 con = cunifsRemain,
|
adamc@403
|
515 exp = fn _ => NONE,
|
adamc@403
|
516 sgn_item = fn _ => NONE,
|
adamc@403
|
517 sgn = fn _ => NONE,
|
adamc@403
|
518 str = fn _ => NONE,
|
adamc@403
|
519 decl = fn _ => NONE}
|
adamc@403
|
520
|
adamc@403
|
521 fun occursCon r =
|
adamc@403
|
522 U.Con.exists {kind = fn _ => false,
|
adam@1303
|
523 con = fn L'.CUnif (_, _, _, _, r') => r = r'
|
adamc@403
|
524 | _ => false}
|
adamc@403
|
525
|
adamc@403
|
526 exception CUnify' of cunify_error
|
adamc@403
|
527
|
adamc@403
|
528 type record_summary = {
|
adamc@403
|
529 fields : (L'.con * L'.con) list,
|
adamc@403
|
530 unifs : (L'.con * L'.con option ref) list,
|
adamc@403
|
531 others : L'.con list
|
adamc@403
|
532 }
|
adamc@403
|
533
|
adamc@403
|
534 fun summaryToCon {fields, unifs, others} =
|
adamc@403
|
535 let
|
adamc@403
|
536 val c = (L'.CRecord (ktype, []), dummy)
|
adamc@403
|
537 val c = List.foldr (fn (c', c) => (L'.CConcat (c', c), dummy)) c others
|
adamc@403
|
538 val c = List.foldr (fn ((c', _), c) => (L'.CConcat (c', c), dummy)) c unifs
|
adamc@403
|
539 in
|
adamc@403
|
540 (L'.CConcat ((L'.CRecord (ktype, fields), dummy), c), dummy)
|
adamc@403
|
541 end
|
adamc@403
|
542
|
adamc@403
|
543 fun p_summary env s = p_con env (summaryToCon s)
|
adamc@403
|
544
|
adamc@403
|
545 exception CUnify of L'.con * L'.con * cunify_error
|
adamc@403
|
546
|
adamc@403
|
547 fun kindof env (c, loc) =
|
adamc@403
|
548 case c of
|
adamc@403
|
549 L'.TFun _ => ktype
|
adamc@403
|
550 | L'.TCFun _ => ktype
|
adamc@403
|
551 | L'.TRecord _ => ktype
|
adamc@628
|
552 | L'.TDisjoint _ => ktype
|
adamc@403
|
553
|
adamc@403
|
554 | L'.CRel xn => #2 (E.lookupCRel env xn)
|
adamc@403
|
555 | L'.CNamed xn => #2 (E.lookupCNamed env xn)
|
adamc@403
|
556 | L'.CModProj (n, ms, x) =>
|
adamc@403
|
557 let
|
adamc@403
|
558 val (_, sgn) = E.lookupStrNamed env n
|
adamc@403
|
559 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@403
|
560 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@403
|
561 NONE => raise Fail "kindof: Unknown substructure"
|
adamc@403
|
562 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@403
|
563 ((L'.StrVar n, loc), sgn) ms
|
adamc@403
|
564 in
|
adamc@403
|
565 case E.projectCon env {sgn = sgn, str = str, field = x} of
|
adamc@403
|
566 NONE => raise Fail "kindof: Unknown con in structure"
|
adamc@403
|
567 | SOME (k, _) => k
|
adamc@403
|
568 end
|
adamc@403
|
569
|
adamc@403
|
570 | L'.CApp (c, _) =>
|
adamc@403
|
571 (case hnormKind (kindof env c) of
|
adamc@403
|
572 (L'.KArrow (_, k), _) => k
|
adamc@403
|
573 | (L'.KError, _) => kerror
|
adamc@413
|
574 | k => raise CUnify' (CKindof (k, c, "arrow")))
|
adamc@403
|
575 | L'.CAbs (x, k, c) => (L'.KArrow (k, kindof (E.pushCRel env x k) c), loc)
|
adamc@628
|
576
|
adamc@403
|
577
|
adamc@403
|
578 | L'.CName _ => kname
|
adamc@403
|
579
|
adamc@403
|
580 | L'.CRecord (k, _) => (L'.KRecord k, loc)
|
adamc@403
|
581 | L'.CConcat (c, _) => kindof env c
|
adamc@621
|
582 | L'.CMap (dom, ran) => mapKind (dom, ran, loc)
|
adamc@403
|
583
|
adamc@403
|
584 | L'.CUnit => (L'.KUnit, loc)
|
adamc@403
|
585
|
adamc@403
|
586 | L'.CTuple cs => (L'.KTuple (map (kindof env) cs), loc)
|
adamc@403
|
587 | L'.CProj (c, n) =>
|
adamc@403
|
588 (case hnormKind (kindof env c) of
|
adamc@403
|
589 (L'.KTuple ks, _) => List.nth (ks, n - 1)
|
adam@1311
|
590 | (L'.KUnif (_, _, r), _) =>
|
adam@1311
|
591 let
|
adam@1311
|
592 val ku = kunif loc
|
adam@1311
|
593 val k = (L'.KTupleUnif (loc, [(n, ku)], ref NONE), loc)
|
adam@1311
|
594 in
|
adam@1311
|
595 r := SOME k;
|
adam@1311
|
596 k
|
adam@1311
|
597 end
|
adam@1311
|
598 | (L'.KTupleUnif (_, nks, r), _) =>
|
adam@1311
|
599 (case ListUtil.search (fn (n', k) => if n' = n then SOME k else NONE) nks of
|
adam@1311
|
600 SOME k => k
|
adam@1311
|
601 | NONE =>
|
adam@1311
|
602 let
|
adam@1311
|
603 val ku = kunif loc
|
adam@1311
|
604 val k = (L'.KTupleUnif (loc, ((n, ku) :: nks), ref NONE), loc)
|
adam@1311
|
605 in
|
adam@1311
|
606 r := SOME k;
|
adam@1311
|
607 k
|
adam@1311
|
608 end)
|
adamc@413
|
609 | k => raise CUnify' (CKindof (k, c, "tuple")))
|
adamc@403
|
610
|
adamc@403
|
611 | L'.CError => kerror
|
adam@1303
|
612 | L'.CUnif (_, _, k, _, _) => k
|
adamc@403
|
613
|
adamc@623
|
614 | L'.CKAbs (x, c) => (L'.KFun (x, kindof (E.pushKRel env x) c), loc)
|
adamc@623
|
615 | L'.CKApp (c, k) =>
|
adamc@623
|
616 (case hnormKind (kindof env c) of
|
adamc@623
|
617 (L'.KFun (_, k'), _) => subKindInKind (0, k) k'
|
adamc@623
|
618 | k => raise CUnify' (CKindof (k, c, "kapp")))
|
adamc@623
|
619 | L'.TKFun _ => ktype
|
adamc@403
|
620
|
adamc@621
|
621 exception GuessFailure
|
adamc@403
|
622
|
adamc@513
|
623 fun isUnitCon env (c, loc) =
|
adamc@513
|
624 case c of
|
adamc@513
|
625 L'.TFun _ => false
|
adamc@513
|
626 | L'.TCFun _ => false
|
adamc@513
|
627 | L'.TRecord _ => false
|
adamc@628
|
628 | L'.TDisjoint _ => false
|
adamc@513
|
629
|
adam@1316
|
630 | L'.CRel xn => #1 (hnormKind (#2 (E.lookupCRel env xn))) = L'.KUnit
|
adam@1316
|
631 | L'.CNamed xn => #1 (hnormKind (#2 (E.lookupCNamed env xn))) = L'.KUnit
|
adamc@518
|
632 | L'.CModProj (n, ms, x) => false
|
adamc@518
|
633 (*let
|
adamc@513
|
634 val (_, sgn) = E.lookupStrNamed env n
|
adamc@513
|
635 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@513
|
636 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@513
|
637 NONE => raise Fail "kindof: Unknown substructure"
|
adamc@513
|
638 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@513
|
639 ((L'.StrVar n, loc), sgn) ms
|
adamc@513
|
640 in
|
adamc@513
|
641 case E.projectCon env {sgn = sgn, str = str, field = x} of
|
adamc@513
|
642 NONE => raise Fail "kindof: Unknown con in structure"
|
adamc@513
|
643 | SOME ((k, _), _) => k = L'.KUnit
|
adamc@518
|
644 end*)
|
adamc@518
|
645
|
adamc@518
|
646 | L'.CApp (c, _) => false
|
adamc@518
|
647 (*(case hnormKind (kindof env c) of
|
adamc@513
|
648 (L'.KArrow (_, k), _) => #1 k = L'.KUnit
|
adamc@513
|
649 | (L'.KError, _) => false
|
adamc@518
|
650 | k => raise CUnify' (CKindof (k, c, "arrow")))*)
|
adamc@513
|
651 | L'.CAbs _ => false
|
adamc@513
|
652
|
adamc@513
|
653 | L'.CName _ => false
|
adamc@513
|
654
|
adamc@513
|
655 | L'.CRecord _ => false
|
adamc@513
|
656 | L'.CConcat _ => false
|
adamc@621
|
657 | L'.CMap _ => false
|
adamc@513
|
658
|
adamc@513
|
659 | L'.CUnit => true
|
adamc@513
|
660
|
adamc@513
|
661 | L'.CTuple _ => false
|
adamc@518
|
662 | L'.CProj (c, n) => false
|
adamc@518
|
663 (*(case hnormKind (kindof env c) of
|
adamc@513
|
664 (L'.KTuple ks, _) => #1 (List.nth (ks, n - 1)) = L'.KUnit
|
adamc@518
|
665 | k => raise CUnify' (CKindof (k, c, "tuple")))*)
|
adamc@513
|
666
|
adamc@513
|
667 | L'.CError => false
|
adam@1316
|
668 | L'.CUnif (_, _, k, _, _) => #1 (hnormKind k) = L'.KUnit
|
adamc@513
|
669
|
adamc@623
|
670 | L'.CKAbs _ => false
|
adamc@623
|
671 | L'.CKApp _ => false
|
adamc@623
|
672 | L'.TKFun _ => false
|
adamc@623
|
673
|
adamc@709
|
674 val recdCounter = ref 0
|
adamc@709
|
675
|
adamc@713
|
676 val mayDelay = ref false
|
adamc@777
|
677 val delayedUnifs = ref ([] : (ErrorMsg.span * E.env * L'.kind * record_summary * record_summary) list)
|
adamc@777
|
678
|
adamc@830
|
679 val delayedExhaustives = ref ([] : (E.env * L'.con * L'.pat list * ErrorMsg.span) list)
|
adamc@830
|
680
|
adam@1304
|
681 exception CantSquish
|
adam@1304
|
682
|
adam@1304
|
683 fun squish by =
|
adam@1304
|
684 U.Con.mapB {kind = fn _ => fn k => k,
|
adam@1304
|
685 con = fn bound => fn c =>
|
adam@1304
|
686 case c of
|
adam@1304
|
687 L'.CRel xn =>
|
adam@1304
|
688 if xn < bound then
|
adam@1304
|
689 c
|
adam@1304
|
690 else if bound <= xn andalso xn < bound + by then
|
adam@1304
|
691 raise CantSquish
|
adam@1304
|
692 else
|
adam@1304
|
693 L'.CRel (xn - by)
|
adam@1304
|
694 | L'.CUnif _ => raise CantSquish
|
adam@1304
|
695 | _ => c,
|
adam@1304
|
696 bind = fn (bound, U.Con.RelC _) => bound + 1
|
adam@1304
|
697 | (bound, _) => bound} 0
|
adam@1304
|
698
|
adamc@777
|
699 fun unifyRecordCons env (loc, c1, c2) =
|
adamc@403
|
700 let
|
adamc@403
|
701 fun rkindof c =
|
adamc@403
|
702 case hnormKind (kindof env c) of
|
adamc@403
|
703 (L'.KRecord k, _) => k
|
adamc@403
|
704 | (L'.KError, _) => kerror
|
adamc@753
|
705 | (L'.KUnif (_, _, r), _) =>
|
adamc@753
|
706 let
|
adamc@753
|
707 val k = kunif (#2 c)
|
adamc@753
|
708 in
|
adamc@753
|
709 r := SOME (L'.KRecord k, #2 c);
|
adamc@753
|
710 k
|
adamc@753
|
711 end
|
adamc@413
|
712 | k => raise CUnify' (CKindof (k, c, "record"))
|
adamc@403
|
713
|
adamc@403
|
714 val k1 = rkindof c1
|
adamc@403
|
715 val k2 = rkindof c2
|
adamc@403
|
716
|
adamc@628
|
717 val r1 = recordSummary env c1
|
adamc@628
|
718 val r2 = recordSummary env c2
|
adamc@403
|
719 in
|
adamc@623
|
720 unifyKinds env k1 k2;
|
adamc@777
|
721 unifySummaries env (loc, k1, r1, r2)
|
adamc@403
|
722 end
|
adamc@403
|
723
|
adamc@777
|
724 and normalizeRecordSummary env (r : record_summary) =
|
adamc@777
|
725 recordSummary env (summaryToCon r)
|
adamc@777
|
726
|
adamc@628
|
727 and recordSummary env c =
|
adamc@403
|
728 let
|
adamc@628
|
729 val c = hnormCon env c
|
adamc@628
|
730
|
adamc@628
|
731 val sum =
|
adamc@403
|
732 case c of
|
adamc@628
|
733 (L'.CRecord (_, xcs), _) => {fields = xcs, unifs = [], others = []}
|
adamc@403
|
734 | (L'.CConcat (c1, c2), _) =>
|
adamc@403
|
735 let
|
adamc@628
|
736 val s1 = recordSummary env c1
|
adamc@628
|
737 val s2 = recordSummary env c2
|
adamc@403
|
738 in
|
adamc@628
|
739 {fields = #fields s1 @ #fields s2,
|
adamc@628
|
740 unifs = #unifs s1 @ #unifs s2,
|
adamc@628
|
741 others = #others s1 @ #others s2}
|
adamc@403
|
742 end
|
adam@1303
|
743 | (L'.CUnif (nl, _, _, _, ref (SOME c)), _) => recordSummary env (E.mliftConInCon nl c)
|
adam@1303
|
744 | c' as (L'.CUnif (0, _, _, _, r), _) => {fields = [], unifs = [(c', r)], others = []}
|
adamc@628
|
745 | c' => {fields = [], unifs = [], others = [c']}
|
adamc@403
|
746 in
|
adamc@628
|
747 sum
|
adamc@403
|
748 end
|
adamc@403
|
749
|
adamc@987
|
750 and consEq env loc (c1, c2) =
|
adamc@777
|
751 let
|
adamc@777
|
752 val mayDelay' = !mayDelay
|
adamc@777
|
753 in
|
adamc@777
|
754 (mayDelay := false;
|
adamc@987
|
755 unifyCons env loc c1 c2;
|
adamc@777
|
756 mayDelay := mayDelay';
|
adamc@777
|
757 true)
|
adamc@777
|
758 handle CUnify _ => (mayDelay := mayDelay'; false)
|
adamc@777
|
759 end
|
adamc@403
|
760
|
adamc@403
|
761 and consNeq env (c1, c2) =
|
adamc@628
|
762 case (#1 (hnormCon env c1), #1 (hnormCon env c2)) of
|
adamc@403
|
763 (L'.CName x1, L'.CName x2) => x1 <> x2
|
adamc@1093
|
764 | (L'.CName _, L'.CRel _) => true
|
adamc@1093
|
765 | (L'.CRel _, L'.CName _) => true
|
adamc@1093
|
766 | (L'.CRel n1, L'.CRel n2) => n1 <> n2
|
adamc@1093
|
767 | (L'.CRel _, L'.CNamed _) => true
|
adamc@1093
|
768 | (L'.CNamed _, L'.CRel _) => true
|
adamc@1093
|
769 | (L'.CRel _, L'.CModProj _) => true
|
adamc@1093
|
770 | (L'.CModProj _, L'.CRel _) => true
|
adamc@1269
|
771 | (L'.CModProj (_, _, n1), L'.CModProj (_, _, n2)) => n1 <> n2
|
adamc@403
|
772 | _ => false
|
adamc@403
|
773
|
adamc@777
|
774 and unifySummaries env (loc, k, s1 : record_summary, s2 : record_summary) =
|
adamc@403
|
775 let
|
adamc@848
|
776 (*val () = eprefaces "Summaries" [("loc", PD.string (ErrorMsg.spanToString loc)),
|
adam@1303
|
777 ("#1", p_summary env s1),
|
adam@1303
|
778 ("#2", p_summary env s2)]*)
|
adamc@403
|
779
|
adamc@403
|
780 fun eatMatching p (ls1, ls2) =
|
adamc@403
|
781 let
|
adamc@403
|
782 fun em (ls1, ls2, passed1) =
|
adamc@403
|
783 case ls1 of
|
adamc@403
|
784 [] => (rev passed1, ls2)
|
adamc@403
|
785 | h1 :: t1 =>
|
adamc@403
|
786 let
|
adamc@403
|
787 fun search (ls2', passed2) =
|
adamc@403
|
788 case ls2' of
|
adamc@403
|
789 [] => em (t1, ls2, h1 :: passed1)
|
adamc@403
|
790 | h2 :: t2 =>
|
adamc@403
|
791 if p (h1, h2) then
|
adamc@403
|
792 em (t1, List.revAppend (passed2, t2), passed1)
|
adamc@403
|
793 else
|
adamc@403
|
794 search (t2, h2 :: passed2)
|
adamc@403
|
795 in
|
adamc@403
|
796 search (ls2, [])
|
adamc@403
|
797 end
|
adamc@403
|
798 in
|
adamc@403
|
799 em (ls1, ls2, [])
|
adamc@403
|
800 end
|
adamc@403
|
801
|
adamc@403
|
802 val (fs1, fs2) = eatMatching (fn ((x1, c1), (x2, c2)) =>
|
adamc@403
|
803 not (consNeq env (x1, x2))
|
adamc@987
|
804 andalso consEq env loc (c1, c2)
|
adamc@987
|
805 andalso consEq env loc (x1, x2))
|
adamc@403
|
806 (#fields s1, #fields s2)
|
adamc@403
|
807 (*val () = eprefaces "Summaries2" [("#1", p_summary env {fields = fs1, unifs = #unifs s1, others = #others s1}),
|
adamc@403
|
808 ("#2", p_summary env {fields = fs2, unifs = #unifs s2, others = #others s2})]*)
|
adamc@646
|
809
|
adamc@403
|
810 val (unifs1, unifs2) = eatMatching (fn ((_, r1), (_, r2)) => r1 = r2) (#unifs s1, #unifs s2)
|
adamc@646
|
811
|
adamc@987
|
812 val (others1, others2) = eatMatching (consEq env loc) (#others s1, #others s2)
|
adamc@403
|
813 (*val () = eprefaces "Summaries3" [("#1", p_summary env {fields = fs1, unifs = unifs1, others = others1}),
|
adamc@403
|
814 ("#2", p_summary env {fields = fs2, unifs = unifs2, others = others2})]*)
|
adamc@403
|
815
|
adamc@709
|
816 fun unsummarize {fields, unifs, others} =
|
adamc@709
|
817 let
|
adamc@709
|
818 val c = (L'.CRecord (k, fields), loc)
|
adamc@709
|
819
|
adamc@709
|
820 val c = foldl (fn ((c1, _), c2) => (L'.CConcat (c1, c2), loc))
|
adamc@709
|
821 c unifs
|
adamc@709
|
822 in
|
adamc@709
|
823 foldl (fn (c1, c2) => (L'.CConcat (c1, c2), loc))
|
adamc@709
|
824 c others
|
adamc@709
|
825 end
|
adamc@709
|
826
|
adamc@710
|
827 val empties = ([], [], [], [], [], [])
|
adamc@710
|
828
|
adamc@709
|
829 val (unifs1, fs1, others1, unifs2, fs2, others2) =
|
adamc@709
|
830 case (unifs1, fs1, others1, unifs2, fs2, others2) of
|
adamc@709
|
831 orig as ([(_, r)], [], [], _, _, _) =>
|
adamc@709
|
832 let
|
adamc@709
|
833 val c = unsummarize {fields = fs2, others = others2, unifs = unifs2}
|
adamc@709
|
834 in
|
adamc@709
|
835 if occursCon r c then
|
adamc@709
|
836 orig
|
adamc@709
|
837 else
|
adamc@709
|
838 (r := SOME c;
|
adamc@710
|
839 empties)
|
adamc@709
|
840 end
|
adamc@709
|
841 | orig as (_, _, _, [(_, r)], [], []) =>
|
adamc@709
|
842 let
|
adamc@709
|
843 val c = unsummarize {fields = fs1, others = others1, unifs = unifs1}
|
adamc@709
|
844 in
|
adamc@709
|
845 if occursCon r c then
|
adamc@709
|
846 orig
|
adamc@709
|
847 else
|
adamc@709
|
848 (r := SOME c;
|
adamc@710
|
849 empties)
|
adamc@709
|
850 end
|
adamc@710
|
851 | orig as ([(_, r1 as ref NONE)], _, [], [(_, r2 as ref NONE)], _, []) =>
|
adamc@710
|
852 if List.all (fn (x1, _) => List.all (fn (x2, _) => consNeq env (x1, x2)) fs2) fs1 then
|
adamc@710
|
853 let
|
adamc@838
|
854 val kr = (L'.KRecord k, loc)
|
adamc@710
|
855 val u = cunif (loc, kr)
|
adamc@710
|
856 in
|
adamc@710
|
857 r1 := SOME (L'.CConcat ((L'.CRecord (k, fs2), loc), u), loc);
|
adamc@710
|
858 r2 := SOME (L'.CConcat ((L'.CRecord (k, fs1), loc), u), loc);
|
adamc@710
|
859 empties
|
adamc@710
|
860 end
|
adamc@710
|
861 else
|
adamc@710
|
862 orig
|
adamc@709
|
863 | orig => orig
|
adamc@709
|
864
|
adamc@403
|
865 (*val () = eprefaces "Summaries4" [("#1", p_summary env {fields = fs1, unifs = unifs1, others = others1}),
|
adamc@777
|
866 ("#2", p_summary env {fields = fs2, unifs = unifs2, others = others2})]*)
|
adamc@403
|
867
|
adamc@753
|
868 fun isGuessable (other, fs, unifs) =
|
adamc@753
|
869 let
|
adamc@753
|
870 val c = (L'.CRecord (k, fs), loc)
|
adamc@753
|
871 val c = foldl (fn ((c', _), c) => (L'.CConcat (c', c), loc)) c unifs
|
adamc@753
|
872 in
|
adamc@987
|
873 (guessMap env loc (other, c, GuessFailure);
|
adamc@753
|
874 true)
|
adamc@753
|
875 handle GuessFailure => false
|
adamc@753
|
876 end
|
adamc@403
|
877
|
adamc@754
|
878 val (fs1, fs2, others1, others2, unifs1, unifs2) =
|
adamc@753
|
879 case (fs1, fs2, others1, others2, unifs1, unifs2) of
|
adamc@753
|
880 ([], _, [other1], [], [], _) =>
|
adamc@753
|
881 if isGuessable (other1, fs2, unifs2) then
|
adamc@754
|
882 ([], [], [], [], [], [])
|
adamc@403
|
883 else
|
adamc@754
|
884 (fs1, fs2, others1, others2, unifs1, unifs2)
|
adamc@753
|
885 | (_, [], [], [other2], _, []) =>
|
adamc@777
|
886 if isGuessable (other2, fs1, unifs1) then
|
adamc@777
|
887 ([], [], [], [], [], [])
|
adamc@777
|
888 else
|
adamc@777
|
889 (fs1, fs2, others1, others2, unifs1, unifs2)
|
adamc@754
|
890 | _ => (fs1, fs2, others1, others2, unifs1, unifs2)
|
adamc@403
|
891
|
adamc@403
|
892 (*val () = eprefaces "Summaries5" [("#1", p_summary env {fields = fs1, unifs = unifs1, others = others1}),
|
adamc@646
|
893 ("#2", p_summary env {fields = fs2, unifs = unifs2, others = others2})]*)
|
adamc@403
|
894
|
adamc@838
|
895 val empty = (L'.CRecord (k, []), loc)
|
adamc@1071
|
896 fun failure () =
|
adamc@1071
|
897 let
|
adamc@1071
|
898 val fs2 = #fields s2
|
adamc@1071
|
899
|
adamc@1071
|
900 fun findPointwise fs1 =
|
adamc@1071
|
901 case fs1 of
|
adamc@1071
|
902 [] => NONE
|
adamc@1071
|
903 | (nm1, c1) :: fs1 =>
|
adamc@1071
|
904 case List.find (fn (nm2, _) => consEq env loc (nm1, nm2)) fs2 of
|
adamc@1071
|
905 NONE => findPointwise fs1
|
adamc@1071
|
906 | SOME (_, c2) =>
|
adamc@1071
|
907 if consEq env loc (c1, c2) then
|
adamc@1071
|
908 findPointwise fs1
|
adamc@1071
|
909 else
|
adam@1359
|
910 SOME (nm1, c1, c2, (unifyCons env loc c1 c2; NONE) handle CUnify (_, _, err) => SOME err)
|
adamc@1071
|
911 in
|
adamc@1071
|
912 raise CUnify' (CRecordFailure (unsummarize s1, unsummarize s2, findPointwise (#fields s1)))
|
adamc@1071
|
913 end
|
adam@1341
|
914
|
adam@1341
|
915 fun default () = if !mayDelay then
|
adam@1341
|
916 delayedUnifs := (loc, env, k, s1, s2) :: !delayedUnifs
|
adam@1341
|
917 else
|
adam@1341
|
918 failure ()
|
adamc@709
|
919 in
|
adamc@777
|
920 (case (unifs1, fs1, others1, unifs2, fs2, others2) of
|
adamc@777
|
921 (_, [], [], [], [], []) =>
|
adamc@777
|
922 app (fn (_, r) => r := SOME empty) unifs1
|
adamc@777
|
923 | ([], [], [], _, [], []) =>
|
adamc@777
|
924 app (fn (_, r) => r := SOME empty) unifs2
|
adam@1341
|
925 | (_, _, _, [], [], [cr as (L'.CUnif (nl, _, _, _, r), _)]) =>
|
adam@1341
|
926 let
|
adam@1341
|
927 val c = summaryToCon {fields = fs1, unifs = unifs1, others = others1}
|
adam@1341
|
928 in
|
adam@1341
|
929 if occursCon r c then
|
adam@1341
|
930 raise CUnify' (COccursCheckFailed (cr, c))
|
adam@1341
|
931 else
|
adam@1341
|
932 (r := SOME (squish nl c))
|
adam@1341
|
933 handle CantSquish => default ()
|
adam@1341
|
934 end
|
adam@1341
|
935 | ([], [], [cr as (L'.CUnif (nl, _, _, _, r), _)], _, _, _) =>
|
adam@1341
|
936 let
|
adam@1341
|
937 val c = summaryToCon {fields = fs2, unifs = unifs2, others = others2}
|
adam@1341
|
938 in
|
adam@1341
|
939 if occursCon r c then
|
adam@1341
|
940 raise CUnify' (COccursCheckFailed (cr, c))
|
adam@1341
|
941 else
|
adam@1341
|
942 (r := SOME (squish nl c))
|
adam@1341
|
943 handle CantSquish => default ()
|
adam@1341
|
944 end
|
adam@1341
|
945 | _ => default ())
|
adam@1341
|
946
|
adamc@777
|
947 (*before eprefaces "Summaries'" [("#1", p_summary env (normalizeRecordSummary env s1)),
|
adamc@777
|
948 ("#2", p_summary env (normalizeRecordSummary env s2))]*)
|
adamc@403
|
949 end
|
adamc@403
|
950
|
adamc@987
|
951 and guessMap env loc (c1, c2, ex) =
|
adamc@403
|
952 let
|
adamc@621
|
953 fun unfold (dom, ran, f, r, c) =
|
adamc@403
|
954 let
|
adamc@621
|
955 fun unfold (r, c) =
|
adamc@754
|
956 case #1 (hnormCon env c) of
|
adamc@987
|
957 L'.CRecord (_, []) => unifyCons env loc r (L'.CRecord (dom, []), loc)
|
adamc@628
|
958 | L'.CRecord (_, [(x, v)]) =>
|
adamc@628
|
959 let
|
adamc@628
|
960 val v' = case dom of
|
adamc@628
|
961 (L'.KUnit, _) => (L'.CUnit, loc)
|
adamc@628
|
962 | _ => cunif (loc, dom)
|
adamc@628
|
963 in
|
adamc@987
|
964 unifyCons env loc v (L'.CApp (f, v'), loc);
|
adamc@987
|
965 unifyCons env loc r (L'.CRecord (dom, [(x, v')]), loc)
|
adamc@628
|
966 end
|
adamc@628
|
967 | L'.CRecord (_, (x, v) :: rest) =>
|
adamc@628
|
968 let
|
adamc@628
|
969 val r1 = cunif (loc, (L'.KRecord dom, loc))
|
adamc@628
|
970 val r2 = cunif (loc, (L'.KRecord dom, loc))
|
adamc@628
|
971 in
|
adamc@628
|
972 unfold (r1, (L'.CRecord (ran, [(x, v)]), loc));
|
adamc@628
|
973 unfold (r2, (L'.CRecord (ran, rest), loc));
|
adamc@987
|
974 unifyCons env loc r (L'.CConcat (r1, r2), loc)
|
adamc@628
|
975 end
|
adamc@628
|
976 | L'.CConcat (c1', c2') =>
|
adamc@628
|
977 let
|
adamc@628
|
978 val r1 = cunif (loc, (L'.KRecord dom, loc))
|
adamc@628
|
979 val r2 = cunif (loc, (L'.KRecord dom, loc))
|
adamc@628
|
980 in
|
adamc@628
|
981 unfold (r1, c1');
|
adamc@628
|
982 unfold (r2, c2');
|
adamc@987
|
983 unifyCons env loc r (L'.CConcat (r1, r2), loc)
|
adamc@628
|
984 end
|
adam@1303
|
985 | L'.CUnif (0, _, _, _, ur) =>
|
adamc@777
|
986 ur := SOME (L'.CApp ((L'.CApp ((L'.CMap (dom, ran), loc), f), loc), r), loc)
|
adamc@628
|
987 | _ => raise ex
|
adamc@403
|
988 in
|
adamc@621
|
989 unfold (r, c)
|
adamc@403
|
990 end
|
adamc@632
|
991 handle _ => raise ex
|
adamc@403
|
992 in
|
adamc@403
|
993 case (#1 c1, #1 c2) of
|
adamc@621
|
994 (L'.CApp ((L'.CApp ((L'.CMap (dom, ran), _), f), _), r), _) =>
|
adamc@621
|
995 unfold (dom, ran, f, r, c2)
|
adamc@621
|
996 | (_, L'.CApp ((L'.CApp ((L'.CMap (dom, ran), _), f), _), r)) =>
|
adamc@621
|
997 unfold (dom, ran, f, r, c1)
|
adamc@403
|
998 | _ => raise ex
|
adamc@403
|
999 end
|
adamc@403
|
1000
|
adamc@987
|
1001 and unifyCons' env loc c1 c2 =
|
adamc@628
|
1002 if isUnitCon env c1 andalso isUnitCon env c2 then
|
adamc@628
|
1003 ()
|
adamc@628
|
1004 else
|
adamc@403
|
1005 let
|
adamc@628
|
1006 (*val befor = Time.now ()
|
adamc@628
|
1007 val old1 = c1
|
adamc@628
|
1008 val old2 = c2*)
|
adamc@628
|
1009 val c1 = hnormCon env c1
|
adamc@628
|
1010 val c2 = hnormCon env c2
|
adamc@403
|
1011 in
|
adamc@987
|
1012 unifyCons'' env loc c1 c2
|
adamc@987
|
1013 handle ex => guessMap env loc (c1, c2, ex)
|
adamc@403
|
1014 end
|
adamc@628
|
1015
|
adamc@987
|
1016 and unifyCons'' env loc (c1All as (c1, _)) (c2All as (c2, _)) =
|
adamc@403
|
1017 let
|
adamc@403
|
1018 fun err f = raise CUnify' (f (c1All, c2All))
|
adamc@403
|
1019
|
adamc@706
|
1020 fun projSpecial1 (c1, n1, onFail) =
|
adamc@403
|
1021 let
|
adamc@632
|
1022 fun trySnd () =
|
adamc@632
|
1023 case #1 (hnormCon env c2All) of
|
adamc@632
|
1024 L'.CProj (c2, n2) =>
|
adamc@632
|
1025 let
|
adamc@632
|
1026 fun tryNormal () =
|
adamc@632
|
1027 if n1 = n2 then
|
adamc@987
|
1028 unifyCons' env loc c1 c2
|
adamc@632
|
1029 else
|
adamc@706
|
1030 onFail ()
|
adamc@632
|
1031 in
|
adamc@632
|
1032 case #1 (hnormCon env c2) of
|
adam@1303
|
1033 L'.CUnif (0, _, k, _, r) =>
|
adamc@632
|
1034 (case #1 (hnormKind k) of
|
adamc@632
|
1035 L'.KTuple ks =>
|
adamc@632
|
1036 let
|
adamc@632
|
1037 val loc = #2 c2
|
adamc@632
|
1038 val us = map (fn k => cunif (loc, k)) ks
|
adamc@632
|
1039 in
|
adamc@632
|
1040 r := SOME (L'.CTuple us, loc);
|
adamc@987
|
1041 unifyCons' env loc c1All (List.nth (us, n2 - 1))
|
adamc@632
|
1042 end
|
adamc@632
|
1043 | _ => tryNormal ())
|
adamc@632
|
1044 | _ => tryNormal ()
|
adamc@632
|
1045 end
|
adamc@706
|
1046 | _ => onFail ()
|
adamc@403
|
1047 in
|
adamc@632
|
1048 case #1 (hnormCon env c1) of
|
adam@1303
|
1049 L'.CUnif (0, _, k, _, r) =>
|
adamc@632
|
1050 (case #1 (hnormKind k) of
|
adamc@632
|
1051 L'.KTuple ks =>
|
adamc@632
|
1052 let
|
adamc@632
|
1053 val loc = #2 c1
|
adamc@632
|
1054 val us = map (fn k => cunif (loc, k)) ks
|
adamc@632
|
1055 in
|
adamc@632
|
1056 r := SOME (L'.CTuple us, loc);
|
adamc@987
|
1057 unifyCons' env loc (List.nth (us, n1 - 1)) c2All
|
adamc@632
|
1058 end
|
adamc@632
|
1059 | _ => trySnd ())
|
adamc@632
|
1060 | _ => trySnd ()
|
adamc@403
|
1061 end
|
adamc@632
|
1062
|
adamc@706
|
1063 fun projSpecial2 (c2, n2, onFail) =
|
adamc@706
|
1064 case #1 (hnormCon env c2) of
|
adam@1303
|
1065 L'.CUnif (0, _, k, _, r) =>
|
adamc@706
|
1066 (case #1 (hnormKind k) of
|
adamc@706
|
1067 L'.KTuple ks =>
|
adamc@706
|
1068 let
|
adamc@706
|
1069 val loc = #2 c2
|
adamc@706
|
1070 val us = map (fn k => cunif (loc, k)) ks
|
adamc@706
|
1071 in
|
adamc@706
|
1072 r := SOME (L'.CTuple us, loc);
|
adamc@987
|
1073 unifyCons' env loc c1All (List.nth (us, n2 - 1))
|
adamc@706
|
1074 end
|
adamc@706
|
1075 | _ => onFail ())
|
adamc@706
|
1076 | _ => onFail ()
|
adamc@706
|
1077
|
adamc@777
|
1078 fun isRecord' () = unifyRecordCons env (loc, c1All, c2All)
|
adamc@706
|
1079
|
adamc@706
|
1080 fun isRecord () =
|
adamc@706
|
1081 case (c1, c2) of
|
adamc@706
|
1082 (L'.CProj (c1, n1), _) => projSpecial1 (c1, n1, isRecord')
|
adamc@706
|
1083 | (_, L'.CProj (c2, n2)) => projSpecial2 (c2, n2, isRecord')
|
adamc@706
|
1084 | _ => isRecord' ()
|
adamc@706
|
1085 in
|
adamc@706
|
1086 (*eprefaces "unifyCons''" [("c1All", p_con env c1All),
|
adamc@706
|
1087 ("c2All", p_con env c2All)];*)
|
adamc@706
|
1088
|
adamc@706
|
1089 case (c1, c2) of
|
adamc@706
|
1090 (L'.CError, _) => ()
|
adamc@706
|
1091 | (_, L'.CError) => ()
|
adamc@403
|
1092
|
adam@1303
|
1093 | (L'.CUnif (nl1, loc1, k1, _, r1), L'.CUnif (nl2, loc2, k2, _, r2)) =>
|
adam@1303
|
1094 if r1 = r2 andalso nl1 = nl2 then
|
adamc@705
|
1095 ()
|
adam@1303
|
1096 else if nl1 = 0 then
|
adamc@705
|
1097 (unifyKinds env k1 k2;
|
adamc@705
|
1098 r1 := SOME c2All)
|
adam@1303
|
1099 else if nl2 = 0 then
|
adam@1303
|
1100 (unifyKinds env k1 k2;
|
adam@1305
|
1101 r2 := SOME c1All)
|
adam@1303
|
1102 else
|
adam@1303
|
1103 err (fn _ => TooLifty (loc1, loc2))
|
adam@1303
|
1104
|
adam@1303
|
1105 | (L'.CUnif (0, _, _, _, r), _) =>
|
adamc@705
|
1106 if occursCon r c2All then
|
adamc@705
|
1107 err COccursCheckFailed
|
adamc@705
|
1108 else
|
adamc@705
|
1109 r := SOME c2All
|
adam@1303
|
1110 | (_, L'.CUnif (0, _, _, _, r)) =>
|
adamc@705
|
1111 if occursCon r c1All then
|
adamc@705
|
1112 err COccursCheckFailed
|
adamc@705
|
1113 else
|
adamc@705
|
1114 r := SOME c1All
|
adamc@705
|
1115
|
adam@1304
|
1116 | (L'.CUnif (nl, _, _, _, r), _) =>
|
adam@1304
|
1117 if occursCon r c2All then
|
adam@1304
|
1118 err COccursCheckFailed
|
adam@1304
|
1119 else
|
adam@1304
|
1120 (r := SOME (squish nl c2All)
|
adam@1306
|
1121 handle CantSquish => err (fn _ => TooDeep))
|
adam@1304
|
1122 | (_, L'.CUnif (nl, _, _, _, r)) =>
|
adam@1304
|
1123 if occursCon r c1All then
|
adam@1304
|
1124 err COccursCheckFailed
|
adam@1304
|
1125 else
|
adam@1304
|
1126 (r := SOME (squish nl c1All)
|
adam@1306
|
1127 handle CantSquish => err (fn _ => TooDeep))
|
adam@1304
|
1128
|
adam@1341
|
1129 | (L'.CRecord _, _) => isRecord ()
|
adam@1341
|
1130 | (_, L'.CRecord _) => isRecord ()
|
adam@1341
|
1131 | (L'.CConcat _, _) => isRecord ()
|
adam@1341
|
1132 | (_, L'.CConcat _) => isRecord ()
|
adam@1341
|
1133
|
adam@1341
|
1134
|
adamc@705
|
1135 | (L'.CUnit, L'.CUnit) => ()
|
adamc@705
|
1136
|
adamc@705
|
1137 | (L'.TFun (d1, r1), L'.TFun (d2, r2)) =>
|
adamc@987
|
1138 (unifyCons' env loc d1 d2;
|
adamc@987
|
1139 unifyCons' env loc r1 r2)
|
adamc@705
|
1140 | (L'.TCFun (expl1, x1, d1, r1), L'.TCFun (expl2, _, d2, r2)) =>
|
adamc@705
|
1141 if expl1 <> expl2 then
|
adamc@705
|
1142 err CExplicitness
|
adamc@705
|
1143 else
|
adamc@705
|
1144 (unifyKinds env d1 d2;
|
adamc@705
|
1145 let
|
adamc@705
|
1146 (*val befor = Time.now ()*)
|
adamc@705
|
1147 val env' = E.pushCRel env x1 d1
|
adamc@705
|
1148 in
|
adamc@705
|
1149 (*TextIO.print ("E.pushCRel: "
|
adamc@705
|
1150 ^ LargeReal.toString (Time.toReal (Time.- (Time.now (), befor)))
|
adamc@705
|
1151 ^ "\n");*)
|
adamc@987
|
1152 unifyCons' env' loc r1 r2
|
adamc@705
|
1153 end)
|
adamc@987
|
1154 | (L'.TRecord r1, L'.TRecord r2) => unifyCons' env loc r1 r2
|
adamc@705
|
1155 | (L'.TDisjoint (c1, d1, e1), L'.TDisjoint (c2, d2, e2)) =>
|
adamc@987
|
1156 (unifyCons' env loc c1 c2;
|
adamc@987
|
1157 unifyCons' env loc d1 d2;
|
adamc@987
|
1158 unifyCons' env loc e1 e2)
|
adamc@705
|
1159
|
adamc@705
|
1160 | (L'.CRel n1, L'.CRel n2) =>
|
adamc@705
|
1161 if n1 = n2 then
|
adamc@705
|
1162 ()
|
adamc@705
|
1163 else
|
adamc@705
|
1164 err CIncompatible
|
adamc@705
|
1165 | (L'.CNamed n1, L'.CNamed n2) =>
|
adamc@705
|
1166 if n1 = n2 then
|
adamc@705
|
1167 ()
|
adamc@705
|
1168 else
|
adamc@705
|
1169 err CIncompatible
|
adamc@705
|
1170
|
adamc@705
|
1171 | (L'.CApp (d1, r1), L'.CApp (d2, r2)) =>
|
adamc@987
|
1172 (unifyCons' env loc d1 d2;
|
adamc@987
|
1173 unifyCons' env loc r1 r2)
|
adamc@705
|
1174 | (L'.CAbs (x1, k1, c1), L'.CAbs (_, k2, c2)) =>
|
adamc@705
|
1175 (unifyKinds env k1 k2;
|
adamc@987
|
1176 unifyCons' (E.pushCRel env x1 k1) loc c1 c2)
|
adamc@705
|
1177
|
adamc@705
|
1178 | (L'.CName n1, L'.CName n2) =>
|
adamc@705
|
1179 if n1 = n2 then
|
adamc@705
|
1180 ()
|
adamc@705
|
1181 else
|
adamc@705
|
1182 err CIncompatible
|
adamc@705
|
1183
|
adamc@705
|
1184 | (L'.CModProj (n1, ms1, x1), L'.CModProj (n2, ms2, x2)) =>
|
adamc@705
|
1185 if n1 = n2 andalso ms1 = ms2 andalso x1 = x2 then
|
adamc@705
|
1186 ()
|
adamc@705
|
1187 else
|
adamc@705
|
1188 err CIncompatible
|
adamc@705
|
1189
|
adamc@705
|
1190 | (L'.CTuple cs1, L'.CTuple cs2) =>
|
adamc@987
|
1191 ((ListPair.appEq (fn (c1, c2) => unifyCons' env loc c1 c2) (cs1, cs2))
|
adamc@705
|
1192 handle ListPair.UnequalLengths => err CIncompatible)
|
adamc@705
|
1193
|
adamc@706
|
1194 | (L'.CProj (c1, n1), _) => projSpecial1 (c1, n1, fn () => err CIncompatible)
|
adamc@706
|
1195 | (_, L'.CProj (c2, n2)) => projSpecial2 (c2, n2, fn () => err CIncompatible)
|
adamc@706
|
1196
|
adamc@623
|
1197 | (L'.CMap (dom1, ran1), L'.CMap (dom2, ran2)) =>
|
adamc@623
|
1198 (unifyKinds env dom1 dom2;
|
adamc@628
|
1199 unifyKinds env ran1 ran2)
|
adamc@623
|
1200
|
adamc@623
|
1201 | (L'.CKAbs (x, c1), L'.CKAbs (_, c2)) =>
|
adamc@987
|
1202 unifyCons' (E.pushKRel env x) loc c1 c2
|
adamc@623
|
1203 | (L'.CKApp (c1, k1), L'.CKApp (c2, k2)) =>
|
adamc@623
|
1204 (unifyKinds env k1 k2;
|
adamc@987
|
1205 unifyCons' env loc c1 c2)
|
adamc@623
|
1206 | (L'.TKFun (x, c1), L'.TKFun (_, c2)) =>
|
adamc@987
|
1207 unifyCons' (E.pushKRel env x) loc c1 c2
|
adamc@628
|
1208
|
adamc@403
|
1209 | _ => err CIncompatible
|
adamc@403
|
1210 end
|
adamc@403
|
1211
|
adamc@987
|
1212 and unifyCons env loc c1 c2 =
|
adamc@987
|
1213 unifyCons' env loc c1 c2
|
adamc@403
|
1214 handle CUnify' err => raise CUnify (c1, c2, err)
|
adamc@403
|
1215 | KUnify args => raise CUnify (c1, c2, CKind args)
|
adamc@403
|
1216
|
adamc@628
|
1217 fun checkCon env e c1 c2 =
|
adamc@987
|
1218 unifyCons env (#2 e) c1 c2
|
adamc@403
|
1219 handle CUnify (c1, c2, err) =>
|
adamc@628
|
1220 expError env (Unify (e, c1, c2, err))
|
adamc@628
|
1221
|
adamc@628
|
1222 fun checkPatCon env p c1 c2 =
|
adamc@987
|
1223 unifyCons env (#2 p) c1 c2
|
adamc@403
|
1224 handle CUnify (c1, c2, err) =>
|
adamc@628
|
1225 expError env (PatUnify (p, c1, c2, err))
|
adamc@71
|
1226
|
adamc@403
|
1227 fun primType env p =
|
adamc@403
|
1228 case p of
|
adamc@403
|
1229 P.Int _ => !int
|
adamc@403
|
1230 | P.Float _ => !float
|
adamc@403
|
1231 | P.String _ => !string
|
adamc@821
|
1232 | P.Char _ => !char
|
adamc@623
|
1233
|
adamc@403
|
1234 datatype constraint =
|
adamc@403
|
1235 Disjoint of D.goal
|
adamc@403
|
1236 | TypeClass of E.env * L'.con * L'.exp option ref * ErrorMsg.span
|
adamc@403
|
1237
|
adamc@403
|
1238 val enD = map Disjoint
|
adamc@403
|
1239
|
adamc@634
|
1240 fun isClassOrFolder env cl =
|
adamc@634
|
1241 E.isClass env cl
|
adamc@634
|
1242 orelse case hnormCon env cl of
|
adamc@634
|
1243 (L'.CKApp (cl, _), _) =>
|
adamc@634
|
1244 (case hnormCon env cl of
|
adamc@634
|
1245 (L'.CModProj (top_n, [], "folder"), _) => top_n = !top_r
|
adamc@634
|
1246 | _ => false)
|
adamc@634
|
1247 | _ => false
|
adamc@634
|
1248
|
adam@1303
|
1249 fun subConInCon env x y =
|
adam@1303
|
1250 ElabOps.subConInCon x y
|
adam@1303
|
1251 handle SubUnif => (cunifyError env (TooUnify (#2 x, y));
|
adam@1303
|
1252 cerror)
|
adam@1303
|
1253
|
adamc@629
|
1254 fun elabHead (env, denv) infer (e as (_, loc)) t =
|
adamc@403
|
1255 let
|
adamc@898
|
1256 fun unravelKind (t, e) =
|
adamc@898
|
1257 case hnormCon env t of
|
adamc@898
|
1258 (L'.TKFun (x, t'), _) =>
|
adamc@898
|
1259 let
|
adamc@898
|
1260 val u = kunif loc
|
adamc@898
|
1261
|
adamc@898
|
1262 val t'' = subKindInCon (0, u) t'
|
adamc@898
|
1263 in
|
adamc@898
|
1264 unravelKind (t'', (L'.EKApp (e, u), loc))
|
adamc@898
|
1265 end
|
adamc@898
|
1266 | t => (e, t, [])
|
adamc@898
|
1267
|
adamc@403
|
1268 fun unravel (t, e) =
|
adamc@628
|
1269 case hnormCon env t of
|
adamc@628
|
1270 (L'.TKFun (x, t'), _) =>
|
adamc@628
|
1271 let
|
adamc@628
|
1272 val u = kunif loc
|
adamc@628
|
1273
|
adamc@628
|
1274 val t'' = subKindInCon (0, u) t'
|
adamc@628
|
1275 in
|
adamc@628
|
1276 unravel (t'', (L'.EKApp (e, u), loc))
|
adamc@628
|
1277 end
|
adamc@628
|
1278 | (L'.TCFun (L'.Implicit, x, k, t'), _) =>
|
adamc@628
|
1279 let
|
adamc@628
|
1280 val u = cunif (loc, k)
|
adamc@628
|
1281
|
adam@1303
|
1282 val t'' = subConInCon env (0, u) t'
|
adamc@628
|
1283 in
|
adamc@628
|
1284 unravel (t'', (L'.ECApp (e, u), loc))
|
adamc@628
|
1285 end
|
adamc@633
|
1286 | (L'.TFun (dom, ran), _) =>
|
adamc@628
|
1287 let
|
adamc@633
|
1288 fun default () = (e, t, [])
|
adamc@750
|
1289
|
adamc@750
|
1290 fun isInstance () =
|
adamc@750
|
1291 if infer <> L.TypesOnly then
|
adamc@750
|
1292 let
|
adamc@750
|
1293 val r = ref NONE
|
adamc@750
|
1294 val (e, t, gs) = unravel (ran, (L'.EApp (e, (L'.EUnif r, loc)), loc))
|
adamc@750
|
1295 in
|
adamc@750
|
1296 (e, t, TypeClass (env, dom, r, loc) :: gs)
|
adamc@750
|
1297 end
|
adamc@750
|
1298 else
|
adamc@750
|
1299 default ()
|
adamc@750
|
1300
|
adamc@750
|
1301 fun hasInstance c =
|
adamc@753
|
1302 case hnormCon env c of
|
adamc@753
|
1303 (L'.TRecord c, _) => U.Con.exists {kind = fn _ => false,
|
adamc@753
|
1304 con = fn c =>
|
adamc@753
|
1305 E.isClass env (hnormCon env (c, loc))} c
|
adamc@753
|
1306 | c =>
|
adamc@750
|
1307 let
|
adamc@753
|
1308 fun findHead c =
|
adamc@753
|
1309 case #1 c of
|
adamc@753
|
1310 L'.CApp (f, _) => findHead f
|
adamc@753
|
1311 | _ => c
|
adamc@753
|
1312
|
adamc@753
|
1313 val cl = hnormCon env (findHead c)
|
adamc@750
|
1314 in
|
adamc@750
|
1315 isClassOrFolder env cl
|
adamc@750
|
1316 end
|
adamc@628
|
1317 in
|
adamc@750
|
1318 if hasInstance dom then
|
adamc@750
|
1319 isInstance ()
|
adamc@750
|
1320 else
|
adamc@750
|
1321 default ()
|
adamc@628
|
1322 end
|
adamc@629
|
1323 | (L'.TDisjoint (r1, r2, t'), loc) =>
|
adamc@629
|
1324 if infer <> L.TypesOnly then
|
adamc@629
|
1325 let
|
adamc@792
|
1326 val gs = D.prove env denv (r1, r2, #2 e)
|
adamc@629
|
1327 val (e, t, gs') = unravel (t', e)
|
adamc@629
|
1328 in
|
adamc@629
|
1329 (e, t, enD gs @ gs')
|
adamc@629
|
1330 end
|
adamc@629
|
1331 else
|
adamc@629
|
1332 (e, t, [])
|
adamc@628
|
1333 | t => (e, t, [])
|
adamc@704
|
1334 in
|
adamc@704
|
1335 case infer of
|
adamc@898
|
1336 L.DontInfer => unravelKind (t, e)
|
adamc@704
|
1337 | _ => unravel (t, e)
|
adamc@704
|
1338 end
|
adamc@15
|
1339
|
adamc@628
|
1340 fun elabPat (pAll as (p, loc), (env, bound)) =
|
adamc@171
|
1341 let
|
adamc@171
|
1342 val perror = (L'.PWild, loc)
|
adamc@171
|
1343 val terror = (L'.CError, loc)
|
adamc@171
|
1344 val pterror = (perror, terror)
|
adamc@171
|
1345 val rerror = (pterror, (env, bound))
|
adamc@171
|
1346
|
adamc@191
|
1347 fun pcon (pc, po, xs, to, dn, dk) =
|
adamc@188
|
1348 case (po, to) of
|
adamc@188
|
1349 (NONE, SOME _) => (expError env (PatHasNoArg loc);
|
adamc@188
|
1350 rerror)
|
adamc@188
|
1351 | (SOME _, NONE) => (expError env (PatHasArg loc);
|
adamc@188
|
1352 rerror)
|
adamc@191
|
1353 | (NONE, NONE) =>
|
adamc@191
|
1354 let
|
adamc@191
|
1355 val k = (L'.KType, loc)
|
adamc@191
|
1356 val unifs = map (fn _ => cunif (loc, k)) xs
|
adamc@191
|
1357 val dn = foldl (fn (u, dn) => (L'.CApp (dn, u), loc)) dn unifs
|
adamc@191
|
1358 in
|
adamc@191
|
1359 (((L'.PCon (dk, pc, unifs, NONE), loc), dn),
|
adamc@191
|
1360 (env, bound))
|
adamc@191
|
1361 end
|
adamc@188
|
1362 | (SOME p, SOME t) =>
|
adamc@188
|
1363 let
|
adamc@628
|
1364 val ((p', pt), (env, bound)) = elabPat (p, (env, bound))
|
adamc@191
|
1365
|
adamc@191
|
1366 val k = (L'.KType, loc)
|
adamc@191
|
1367 val unifs = map (fn _ => cunif (loc, k)) xs
|
adamc@194
|
1368 val nxs = length unifs - 1
|
adam@1304
|
1369 val t = ListUtil.foldli (fn (i, u, t) => subConInCon env (nxs - i,
|
adam@1304
|
1370 E.mliftConInCon (nxs - i) u) t) t unifs
|
adamc@191
|
1371 val dn = foldl (fn (u, dn) => (L'.CApp (dn, u), loc)) dn unifs
|
adamc@188
|
1372 in
|
adamc@628
|
1373 ignore (checkPatCon env p' pt t);
|
adamc@191
|
1374 (((L'.PCon (dk, pc, unifs, SOME p'), loc), dn),
|
adamc@188
|
1375 (env, bound))
|
adamc@188
|
1376 end
|
adamc@171
|
1377 in
|
adamc@171
|
1378 case p of
|
adamc@171
|
1379 L.PWild => (((L'.PWild, loc), cunif (loc, (L'.KType, loc))),
|
adamc@171
|
1380 (env, bound))
|
adamc@171
|
1381 | L.PVar x =>
|
adamc@171
|
1382 let
|
adamc@171
|
1383 val t = if SS.member (bound, x) then
|
adamc@171
|
1384 (expError env (DuplicatePatternVariable (loc, x));
|
adamc@171
|
1385 terror)
|
adamc@171
|
1386 else
|
adamc@171
|
1387 cunif (loc, (L'.KType, loc))
|
adamc@171
|
1388 in
|
adamc@182
|
1389 (((L'.PVar (x, t), loc), t),
|
adamc@171
|
1390 (E.pushERel env x t, SS.add (bound, x)))
|
adamc@171
|
1391 end
|
adamc@173
|
1392 | L.PPrim p => (((L'.PPrim p, loc), primType env p),
|
adamc@173
|
1393 (env, bound))
|
adamc@171
|
1394 | L.PCon ([], x, po) =>
|
adamc@171
|
1395 (case E.lookupConstructor env x of
|
adamc@174
|
1396 NONE => (expError env (UnboundConstructor (loc, [], x));
|
adamc@171
|
1397 rerror)
|
adamc@191
|
1398 | SOME (dk, n, xs, to, dn) => pcon (L'.PConVar n, po, xs, to, (L'.CNamed dn, loc), dk))
|
adamc@174
|
1399 | L.PCon (m1 :: ms, x, po) =>
|
adamc@174
|
1400 (case E.lookupStr env m1 of
|
adamc@174
|
1401 NONE => (expError env (UnboundStrInExp (loc, m1));
|
adamc@174
|
1402 rerror)
|
adamc@174
|
1403 | SOME (n, sgn) =>
|
adamc@174
|
1404 let
|
adamc@174
|
1405 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@174
|
1406 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@182
|
1407 NONE => raise Fail "elabPat: Unknown substructure"
|
adamc@174
|
1408 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@174
|
1409 ((L'.StrVar n, loc), sgn) ms
|
adamc@174
|
1410 in
|
adamc@174
|
1411 case E.projectConstructor env {str = str, sgn = sgn, field = x} of
|
adamc@174
|
1412 NONE => (expError env (UnboundConstructor (loc, m1 :: ms, x));
|
adamc@174
|
1413 rerror)
|
adamc@191
|
1414 | SOME (dk, _, xs, to, dn) => pcon (L'.PConProj (n, ms, x), po, xs, to, dn, dk)
|
adamc@174
|
1415 end)
|
adamc@174
|
1416
|
adamc@175
|
1417 | L.PRecord (xps, flex) =>
|
adamc@175
|
1418 let
|
adamc@175
|
1419 val (xpts, (env, bound, _)) =
|
adamc@175
|
1420 ListUtil.foldlMap (fn ((x, p), (env, bound, fbound)) =>
|
adamc@175
|
1421 let
|
adamc@628
|
1422 val ((p', t), (env, bound)) = elabPat (p, (env, bound))
|
adamc@175
|
1423 in
|
adamc@175
|
1424 if SS.member (fbound, x) then
|
adamc@175
|
1425 expError env (DuplicatePatField (loc, x))
|
adamc@175
|
1426 else
|
adamc@175
|
1427 ();
|
adamc@175
|
1428 ((x, p', t), (env, bound, SS.add (fbound, x)))
|
adamc@175
|
1429 end)
|
adamc@175
|
1430 (env, bound, SS.empty) xps
|
adamc@175
|
1431
|
adamc@175
|
1432 val k = (L'.KType, loc)
|
adamc@175
|
1433 val c = (L'.CRecord (k, map (fn (x, _, t) => ((L'.CName x, loc), t)) xpts), loc)
|
adamc@176
|
1434 val c =
|
adamc@175
|
1435 if flex then
|
adamc@176
|
1436 (L'.CConcat (c, cunif (loc, (L'.KRecord k, loc))), loc)
|
adamc@175
|
1437 else
|
adamc@176
|
1438 c
|
adamc@175
|
1439 in
|
adamc@182
|
1440 (((L'.PRecord xpts, loc),
|
adamc@175
|
1441 (L'.TRecord c, loc)),
|
adamc@175
|
1442 (env, bound))
|
adamc@175
|
1443 end
|
adamc@822
|
1444
|
adamc@822
|
1445 | L.PAnnot (p, t) =>
|
adamc@822
|
1446 let
|
adamc@822
|
1447 val ((p', pt), (env, bound)) = elabPat (p, (env, bound))
|
adamc@822
|
1448 val (t', k, _) = elabCon (env, D.empty) t
|
adamc@822
|
1449 in
|
adamc@822
|
1450 checkPatCon env p' pt t';
|
adamc@822
|
1451 ((p', t'), (env, bound))
|
adamc@822
|
1452 end
|
adamc@171
|
1453 end
|
adamc@171
|
1454
|
adamc@819
|
1455 (* This exhaustiveness checking follows Luc Maranget's paper "Warnings for pattern matching." *)
|
adamc@819
|
1456 fun exhaustive (env, t, ps, loc) =
|
adamc@819
|
1457 let
|
adamc@819
|
1458 fun fail n = raise Fail ("Elaborate.exhaustive: Impossible " ^ Int.toString n)
|
adamc@819
|
1459
|
adamc@819
|
1460 fun patConNum pc =
|
adamc@819
|
1461 case pc of
|
adamc@819
|
1462 L'.PConVar n => n
|
adamc@819
|
1463 | L'.PConProj (m1, ms, x) =>
|
adamc@819
|
1464 let
|
adamc@819
|
1465 val (str, sgn) = E.chaseMpath env (m1, ms)
|
adamc@819
|
1466 in
|
adamc@819
|
1467 case E.projectConstructor env {str = str, sgn = sgn, field = x} of
|
adamc@819
|
1468 NONE => raise Fail "exhaustive: Can't project datatype"
|
adamc@819
|
1469 | SOME (_, n, _, _, _) => n
|
adamc@819
|
1470 end
|
adamc@819
|
1471
|
adamc@819
|
1472 fun nameOfNum (t, n) =
|
adamc@819
|
1473 case t of
|
adamc@819
|
1474 L'.CModProj (m1, ms, x) =>
|
adamc@819
|
1475 let
|
adamc@819
|
1476 val (str, sgn) = E.chaseMpath env (m1, ms)
|
adamc@819
|
1477 in
|
adamc@819
|
1478 case E.projectDatatype env {str = str, sgn = sgn, field = x} of
|
adamc@819
|
1479 NONE => raise Fail "exhaustive: Can't project datatype"
|
adamc@819
|
1480 | SOME (_, cons) =>
|
adamc@819
|
1481 case ListUtil.search (fn (name, n', _) =>
|
adamc@819
|
1482 if n' = n then
|
adamc@819
|
1483 SOME name
|
adamc@819
|
1484 else
|
adamc@819
|
1485 NONE) cons of
|
adamc@819
|
1486 NONE => fail 9
|
adamc@819
|
1487 | SOME name => L'.PConProj (m1, ms, name)
|
adamc@819
|
1488 end
|
adamc@819
|
1489 | _ => L'.PConVar n
|
adamc@819
|
1490
|
adamc@819
|
1491 fun S (args, c, P) =
|
adamc@819
|
1492 List.mapPartial
|
adamc@819
|
1493 (fn [] => fail 1
|
adamc@819
|
1494 | p1 :: ps =>
|
adamc@819
|
1495 let
|
adamc@819
|
1496 val loc = #2 p1
|
adamc@819
|
1497
|
adamc@819
|
1498 fun wild () =
|
adamc@819
|
1499 SOME (map (fn _ => (L'.PWild, loc)) args @ ps)
|
adamc@819
|
1500 in
|
adamc@819
|
1501 case #1 p1 of
|
adamc@819
|
1502 L'.PPrim _ => NONE
|
adamc@819
|
1503 | L'.PCon (_, c', _, NONE) =>
|
adamc@819
|
1504 if patConNum c' = c then
|
adamc@819
|
1505 SOME ps
|
adamc@819
|
1506 else
|
adamc@819
|
1507 NONE
|
adamc@819
|
1508 | L'.PCon (_, c', _, SOME p) =>
|
adamc@819
|
1509 if patConNum c' = c then
|
adamc@819
|
1510 SOME (p :: ps)
|
adamc@819
|
1511 else
|
adamc@819
|
1512 NONE
|
adamc@819
|
1513 | L'.PRecord xpts =>
|
adamc@819
|
1514 SOME (map (fn x =>
|
adamc@819
|
1515 case ListUtil.search (fn (x', p, _) =>
|
adamc@819
|
1516 if x = x' then
|
adamc@819
|
1517 SOME p
|
adamc@819
|
1518 else
|
adamc@819
|
1519 NONE) xpts of
|
adamc@819
|
1520 NONE => (L'.PWild, loc)
|
adamc@819
|
1521 | SOME p => p) args @ ps)
|
adamc@819
|
1522 | L'.PWild => wild ()
|
adamc@819
|
1523 | L'.PVar _ => wild ()
|
adamc@819
|
1524 end)
|
adamc@819
|
1525 P
|
adamc@819
|
1526
|
adamc@819
|
1527 fun D P =
|
adamc@819
|
1528 List.mapPartial
|
adamc@819
|
1529 (fn [] => fail 2
|
adamc@819
|
1530 | (p1, _) :: ps =>
|
adamc@819
|
1531 case p1 of
|
adamc@819
|
1532 L'.PWild => SOME ps
|
adamc@819
|
1533 | L'.PVar _ => SOME ps
|
adamc@819
|
1534 | L'.PPrim _ => NONE
|
adamc@819
|
1535 | L'.PCon _ => NONE
|
adamc@819
|
1536 | L'.PRecord _ => NONE)
|
adamc@819
|
1537 P
|
adamc@819
|
1538
|
adamc@819
|
1539 fun I (P, q) =
|
adamc@819
|
1540 (*(prefaces "I" [("P", p_list (fn P' => box [PD.string "[", p_list (p_pat env) P', PD.string "]"]) P),
|
adamc@819
|
1541 ("q", p_list (p_con env) q)];*)
|
adamc@819
|
1542 case q of
|
adamc@819
|
1543 [] => (case P of
|
adamc@819
|
1544 [] => SOME []
|
adamc@819
|
1545 | _ => NONE)
|
adamc@819
|
1546 | q1 :: qs =>
|
adamc@819
|
1547 let
|
adamc@819
|
1548 val loc = #2 q1
|
adamc@819
|
1549
|
adamc@819
|
1550 fun unapp (t, acc) =
|
adamc@830
|
1551 case #1 t of
|
adamc@830
|
1552 L'.CApp (t, arg) => unapp (t, arg :: acc)
|
adamc@819
|
1553 | _ => (t, rev acc)
|
adamc@819
|
1554
|
adamc@830
|
1555 val (t1, args) = unapp (hnormCon env q1, [])
|
adamc@830
|
1556 val t1 = hnormCon env t1
|
adam@1303
|
1557 fun doSub t = foldl (fn (arg, t) => subConInCon env (0, arg) t) t args
|
adamc@819
|
1558
|
adamc@819
|
1559 fun dtype (dtO, names) =
|
adamc@819
|
1560 let
|
adamc@819
|
1561 val nameSet = IS.addList (IS.empty, names)
|
adamc@819
|
1562 val nameSet = foldl (fn (ps, nameSet) =>
|
adamc@819
|
1563 case ps of
|
adamc@819
|
1564 [] => fail 4
|
adamc@819
|
1565 | (L'.PCon (_, pc, _, _), _) :: _ =>
|
adamc@819
|
1566 (IS.delete (nameSet, patConNum pc)
|
adamc@819
|
1567 handle NotFound => nameSet)
|
adamc@819
|
1568 | _ => nameSet)
|
adamc@819
|
1569 nameSet P
|
adamc@819
|
1570 in
|
adamc@819
|
1571 nameSet
|
adamc@819
|
1572 end
|
adamc@819
|
1573
|
adamc@819
|
1574 fun default () = (NONE, IS.singleton 0, [])
|
adamc@819
|
1575
|
adamc@819
|
1576 val (dtO, unused, cons) =
|
adamc@830
|
1577 case #1 t1 of
|
adamc@819
|
1578 L'.CNamed n =>
|
adamc@819
|
1579 let
|
adamc@819
|
1580 val dt = E.lookupDatatype env n
|
adamc@819
|
1581 val cons = E.constructors dt
|
adamc@819
|
1582 in
|
adamc@819
|
1583 (SOME dt,
|
adamc@819
|
1584 dtype (SOME dt, map #2 cons),
|
adamc@819
|
1585 map (fn (_, n, co) =>
|
adamc@819
|
1586 (n,
|
adamc@819
|
1587 case co of
|
adamc@819
|
1588 NONE => []
|
adamc@819
|
1589 | SOME t => [("", doSub t)])) cons)
|
adamc@819
|
1590 end
|
adamc@819
|
1591 | L'.CModProj (m1, ms, x) =>
|
adamc@819
|
1592 let
|
adamc@819
|
1593 val (str, sgn) = E.chaseMpath env (m1, ms)
|
adamc@819
|
1594 in
|
adamc@819
|
1595 case E.projectDatatype env {str = str, sgn = sgn, field = x} of
|
adamc@819
|
1596 NONE => default ()
|
adamc@819
|
1597 | SOME (_, cons) =>
|
adamc@819
|
1598 (NONE,
|
adamc@819
|
1599 dtype (NONE, map #2 cons),
|
adamc@819
|
1600 map (fn (s, _, co) =>
|
adamc@819
|
1601 (patConNum (L'.PConProj (m1, ms, s)),
|
adamc@819
|
1602 case co of
|
adamc@819
|
1603 NONE => []
|
adamc@819
|
1604 | SOME t => [("", doSub t)])) cons)
|
adamc@819
|
1605 end
|
adamc@830
|
1606 | L'.TRecord t =>
|
adamc@830
|
1607 (case #1 (hnormCon env t) of
|
adamc@830
|
1608 L'.CRecord (_, xts) =>
|
adamc@830
|
1609 let
|
adamc@830
|
1610 val xts = map (fn ((L'.CName x, _), co) => SOME (x, co)
|
adamc@830
|
1611 | _ => NONE) xts
|
adamc@830
|
1612 in
|
adamc@830
|
1613 if List.all Option.isSome xts then
|
adamc@830
|
1614 let
|
adamc@830
|
1615 val xts = List.mapPartial (fn x => x) xts
|
adamc@830
|
1616 val xts = ListMergeSort.sort (fn ((x1, _), (x2, _)) =>
|
adamc@830
|
1617 String.compare (x1, x2) = GREATER) xts
|
adamc@830
|
1618 in
|
adamc@830
|
1619 (NONE, IS.empty, [(0, xts)])
|
adamc@830
|
1620 end
|
adamc@830
|
1621 else
|
adamc@830
|
1622 default ()
|
adamc@830
|
1623 end
|
adamc@830
|
1624 | _ => default ())
|
adamc@819
|
1625 | _ => default ()
|
adamc@819
|
1626 in
|
adamc@819
|
1627 if IS.isEmpty unused then
|
adamc@819
|
1628 let
|
adamc@819
|
1629 fun recurse cons =
|
adamc@819
|
1630 case cons of
|
adamc@819
|
1631 [] => NONE
|
adamc@819
|
1632 | (name, args) :: cons =>
|
adamc@819
|
1633 case I (S (map #1 args, name, P),
|
adamc@819
|
1634 map #2 args @ qs) of
|
adamc@819
|
1635 NONE => recurse cons
|
adamc@819
|
1636 | SOME ps =>
|
adamc@819
|
1637 let
|
adamc@819
|
1638 val nargs = length args
|
adamc@819
|
1639 val argPs = List.take (ps, nargs)
|
adamc@819
|
1640 val restPs = List.drop (ps, nargs)
|
adamc@819
|
1641
|
adamc@819
|
1642 val p = case name of
|
adamc@819
|
1643 0 => L'.PRecord (ListPair.map
|
adamc@819
|
1644 (fn ((name, t), p) => (name, p, t))
|
adamc@819
|
1645 (args, argPs))
|
adamc@830
|
1646 | _ => L'.PCon (L'.Default, nameOfNum (#1 t1, name), [],
|
adamc@819
|
1647 case argPs of
|
adamc@819
|
1648 [] => NONE
|
adamc@819
|
1649 | [p] => SOME p
|
adamc@819
|
1650 | _ => fail 3)
|
adamc@819
|
1651 in
|
adamc@819
|
1652 SOME ((p, loc) :: restPs)
|
adamc@819
|
1653 end
|
adamc@819
|
1654 in
|
adamc@819
|
1655 recurse cons
|
adamc@819
|
1656 end
|
adamc@819
|
1657 else
|
adamc@819
|
1658 case I (D P, qs) of
|
adamc@819
|
1659 NONE => NONE
|
adamc@819
|
1660 | SOME ps =>
|
adamc@819
|
1661 let
|
adamc@819
|
1662 val p = case cons of
|
adamc@819
|
1663 [] => L'.PWild
|
adamc@819
|
1664 | (0, _) :: _ => L'.PWild
|
adamc@819
|
1665 | _ =>
|
adamc@819
|
1666 case IS.find (fn _ => true) unused of
|
adamc@819
|
1667 NONE => fail 6
|
adamc@819
|
1668 | SOME name =>
|
adamc@819
|
1669 case ListUtil.search (fn (name', args) =>
|
adamc@819
|
1670 if name = name' then
|
adamc@819
|
1671 SOME (name', args)
|
adamc@819
|
1672 else
|
adamc@819
|
1673 NONE) cons of
|
adamc@819
|
1674 SOME (n, []) =>
|
adamc@830
|
1675 L'.PCon (L'.Default, nameOfNum (#1 t1, n), [], NONE)
|
adamc@819
|
1676 | SOME (n, [_]) =>
|
adamc@830
|
1677 L'.PCon (L'.Default, nameOfNum (#1 t1, n), [], SOME (L'.PWild, loc))
|
adamc@819
|
1678 | _ => fail 7
|
adamc@819
|
1679 in
|
adamc@819
|
1680 SOME ((p, loc) :: ps)
|
adamc@819
|
1681 end
|
adamc@819
|
1682 end
|
adamc@819
|
1683 in
|
adamc@819
|
1684 case I (map (fn x => [x]) ps, [t]) of
|
adamc@819
|
1685 NONE => NONE
|
adamc@819
|
1686 | SOME [p] => SOME p
|
adamc@819
|
1687 | _ => fail 7
|
adamc@819
|
1688 end
|
adamc@819
|
1689
|
adamc@217
|
1690 fun unmodCon env (c, loc) =
|
adamc@217
|
1691 case c of
|
adamc@217
|
1692 L'.CNamed n =>
|
adamc@217
|
1693 (case E.lookupCNamed env n of
|
adamc@217
|
1694 (_, _, SOME (c as (L'.CModProj _, _))) => unmodCon env c
|
adamc@217
|
1695 | _ => (c, loc))
|
adamc@217
|
1696 | L'.CModProj (m1, ms, x) =>
|
adamc@217
|
1697 let
|
adamc@217
|
1698 val (str, sgn) = E.chaseMpath env (m1, ms)
|
adamc@217
|
1699 in
|
adamc@217
|
1700 case E.projectCon env {str = str, sgn = sgn, field = x} of
|
adamc@217
|
1701 NONE => raise Fail "unmodCon: Can't projectCon"
|
adamc@217
|
1702 | SOME (_, SOME (c as (L'.CModProj _, _))) => unmodCon env c
|
adamc@217
|
1703 | _ => (c, loc)
|
adamc@217
|
1704 end
|
adamc@217
|
1705 | _ => (c, loc)
|
adamc@217
|
1706
|
adamc@721
|
1707 fun normClassKey env c =
|
adamc@467
|
1708 let
|
adamc@721
|
1709 val c = hnormCon env c
|
adamc@467
|
1710 in
|
adamc@467
|
1711 case #1 c of
|
adamc@467
|
1712 L'.CApp (c1, c2) =>
|
adamc@467
|
1713 let
|
adamc@721
|
1714 val c1 = normClassKey env c1
|
adamc@721
|
1715 val c2 = normClassKey env c2
|
adamc@467
|
1716 in
|
adamc@467
|
1717 (L'.CApp (c1, c2), #2 c)
|
adamc@467
|
1718 end
|
adamc@721
|
1719 | L'.CRecord (k, xcs) => (L'.CRecord (k, map (fn (x, c) => (normClassKey env x,
|
adamc@721
|
1720 normClassKey env c)) xcs), #2 c)
|
adamc@721
|
1721 | _ => unmodCon env c
|
adamc@467
|
1722 end
|
adamc@467
|
1723
|
adamc@467
|
1724 fun normClassConstraint env (c, loc) =
|
adamc@217
|
1725 case c of
|
adamc@217
|
1726 L'.CApp (f, x) =>
|
adamc@217
|
1727 let
|
adamc@721
|
1728 val f = normClassKey env f
|
adamc@467
|
1729 val x = normClassKey env x
|
adamc@217
|
1730 in
|
adamc@467
|
1731 (L'.CApp (f, x), loc)
|
adamc@217
|
1732 end
|
adamc@674
|
1733 | L'.TFun (c1, c2) =>
|
adamc@674
|
1734 let
|
adamc@674
|
1735 val c1 = normClassConstraint env c1
|
adamc@674
|
1736 val c2 = normClassConstraint env c2
|
adamc@674
|
1737 in
|
adamc@674
|
1738 (L'.TFun (c1, c2), loc)
|
adamc@674
|
1739 end
|
adamc@674
|
1740 | L'.TCFun (expl, x, k, c1) => (L'.TCFun (expl, x, k, normClassConstraint env c1), loc)
|
adam@1303
|
1741 | L'.CUnif (nl, _, _, _, ref (SOME c)) => normClassConstraint env (E.mliftConInCon nl c)
|
adamc@721
|
1742 | _ => unmodCon env (c, loc)
|
adamc@216
|
1743
|
adamc@1093
|
1744 fun findHead e e' =
|
adamc@1093
|
1745 let
|
adamc@1093
|
1746 fun findHead (e, _) =
|
adamc@1093
|
1747 case e of
|
adamc@1093
|
1748 L.EVar (_, _, infer) =>
|
adamc@1093
|
1749 let
|
adamc@1093
|
1750 fun findHead' (e, _) =
|
adamc@1093
|
1751 case e of
|
adamc@1093
|
1752 L'.ENamed _ => true
|
adamc@1093
|
1753 | L'.EModProj _ => true
|
adamc@1093
|
1754 | L'.EApp (e, _) => findHead' e
|
adamc@1093
|
1755 | L'.ECApp (e, _) => findHead' e
|
adamc@1093
|
1756 | L'.EKApp (e, _) => findHead' e
|
adamc@1093
|
1757 | _ => false
|
adamc@1093
|
1758 in
|
adamc@1093
|
1759 if findHead' e' then
|
adamc@1093
|
1760 SOME infer
|
adamc@1093
|
1761 else
|
adamc@1093
|
1762 NONE
|
adamc@1093
|
1763 end
|
adamc@1093
|
1764 | L.EApp (e, _) => findHead e
|
adamc@1093
|
1765 | L.ECApp (e, _) => findHead e
|
adamc@1093
|
1766 | L.EDisjointApp e => findHead e
|
adamc@1093
|
1767 | _ => NONE
|
adamc@1093
|
1768 in
|
adamc@1093
|
1769 findHead e
|
adamc@1093
|
1770 end
|
adamc@1093
|
1771
|
adamc@1275
|
1772 datatype needed = Needed of {Cons : (L'.kind * L'.con option) SM.map,
|
adamc@1264
|
1773 Constraints : (E.env * (L'.con * L'.con) * ErrorMsg.span) list,
|
adamc@1264
|
1774 Vals : SS.set,
|
adamc@1270
|
1775 Mods : (E.env * needed) SM.map}
|
adamc@1264
|
1776
|
adamc@1264
|
1777 fun ncons (Needed r) = #Cons r
|
adamc@1264
|
1778 fun nconstraints (Needed r) = #Constraints r
|
adamc@1264
|
1779 fun nvals (Needed r) = #Vals r
|
adamc@1264
|
1780 fun nmods (Needed r) = #Mods r
|
adamc@1264
|
1781
|
adamc@1264
|
1782 val nempty = Needed {Cons = SM.empty,
|
adamc@1264
|
1783 Constraints = nil,
|
adamc@1264
|
1784 Vals = SS.empty,
|
adamc@1264
|
1785 Mods = SM.empty}
|
adamc@1264
|
1786
|
adamc@1264
|
1787 fun naddCon (r : needed, k, v) =
|
adamc@1264
|
1788 let
|
adamc@1264
|
1789 val Needed r = r
|
adamc@1264
|
1790 in
|
adamc@1264
|
1791 Needed {Cons = SM.insert (#Cons r, k, v),
|
adamc@1264
|
1792 Constraints = #Constraints r,
|
adamc@1264
|
1793 Vals = #Vals r,
|
adamc@1264
|
1794 Mods = #Mods r}
|
adamc@1264
|
1795 end
|
adamc@1264
|
1796
|
adamc@1264
|
1797 fun naddConstraint (r : needed, v) =
|
adamc@1264
|
1798 let
|
adamc@1264
|
1799 val Needed r = r
|
adamc@1264
|
1800 in
|
adamc@1264
|
1801 Needed {Cons = #Cons r,
|
adamc@1264
|
1802 Constraints = v :: #Constraints r,
|
adamc@1264
|
1803 Vals = #Vals r,
|
adamc@1264
|
1804 Mods = #Mods r}
|
adamc@1264
|
1805 end
|
adamc@1264
|
1806
|
adamc@1264
|
1807 fun naddVal (r : needed, k) =
|
adamc@1264
|
1808 let
|
adamc@1264
|
1809 val Needed r = r
|
adamc@1264
|
1810 in
|
adamc@1264
|
1811 Needed {Cons = #Cons r,
|
adamc@1264
|
1812 Constraints = #Constraints r,
|
adamc@1264
|
1813 Vals = SS.add (#Vals r, k),
|
adamc@1264
|
1814 Mods = #Mods r}
|
adamc@1264
|
1815 end
|
adamc@1264
|
1816
|
adamc@1264
|
1817 fun naddMod (r : needed, k, v) =
|
adamc@1264
|
1818 let
|
adamc@1264
|
1819 val Needed r = r
|
adamc@1264
|
1820 in
|
adamc@1264
|
1821 Needed {Cons = #Cons r,
|
adamc@1264
|
1822 Constraints = #Constraints r,
|
adamc@1264
|
1823 Vals = #Vals r,
|
adamc@1264
|
1824 Mods = SM.insert (#Mods r, k, v)}
|
adamc@1264
|
1825 end
|
adamc@1264
|
1826
|
adamc@1264
|
1827 fun ndelCon (r : needed, k) =
|
adamc@1264
|
1828 let
|
adamc@1264
|
1829 val Needed r = r
|
adamc@1264
|
1830 in
|
adamc@1264
|
1831 Needed {Cons = #1 (SM.remove (#Cons r, k)) handle NotFound => #Cons r,
|
adamc@1264
|
1832 Constraints = #Constraints r,
|
adamc@1264
|
1833 Vals = #Vals r,
|
adamc@1264
|
1834 Mods = #Mods r}
|
adamc@1264
|
1835 end
|
adamc@1264
|
1836
|
adamc@1264
|
1837 fun ndelVal (r : needed, k) =
|
adamc@1264
|
1838 let
|
adamc@1264
|
1839 val Needed r = r
|
adamc@1264
|
1840 in
|
adamc@1264
|
1841 Needed {Cons = #Cons r,
|
adamc@1264
|
1842 Constraints = #Constraints r,
|
adamc@1264
|
1843 Vals = SS.delete (#Vals r, k) handle NotFound => #Vals r,
|
adamc@1264
|
1844 Mods = #Mods r}
|
adamc@1264
|
1845 end
|
adamc@1264
|
1846
|
adamc@92
|
1847 fun elabExp (env, denv) (eAll as (e, loc)) =
|
adamc@91
|
1848 let
|
adamc@848
|
1849 (*val () = eprefaces "elabExp" [("eAll", SourcePrint.p_exp eAll)]*)
|
adamc@514
|
1850 (*val befor = Time.now ()*)
|
adamc@280
|
1851
|
adamc@280
|
1852 val r = case e of
|
adamc@91
|
1853 L.EAnnot (e, t) =>
|
adamc@91
|
1854 let
|
adamc@91
|
1855 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@91
|
1856 val (t', _, gs2) = elabCon (env, denv) t
|
adamc@91
|
1857 in
|
adamc@628
|
1858 checkCon env e' et t';
|
adamc@628
|
1859 (e', t', gs1 @ enD gs2)
|
adamc@91
|
1860 end
|
adamc@34
|
1861
|
adamc@91
|
1862 | L.EPrim p => ((L'.EPrim p, loc), primType env p, [])
|
adamc@403
|
1863 | L.EVar ([], s, infer) =>
|
adamc@91
|
1864 (case E.lookupE env s of
|
adamc@91
|
1865 E.NotBound =>
|
adamc@91
|
1866 (expError env (UnboundExp (loc, s));
|
adamc@91
|
1867 (eerror, cerror, []))
|
adamc@629
|
1868 | E.Rel (n, t) => elabHead (env, denv) infer (L'.ERel n, loc) t
|
adamc@629
|
1869 | E.Named (n, t) => elabHead (env, denv) infer (L'.ENamed n, loc) t)
|
adamc@403
|
1870 | L.EVar (m1 :: ms, s, infer) =>
|
adamc@91
|
1871 (case E.lookupStr env m1 of
|
adamc@91
|
1872 NONE => (expError env (UnboundStrInExp (loc, m1));
|
adamc@91
|
1873 (eerror, cerror, []))
|
adamc@91
|
1874 | SOME (n, sgn) =>
|
adamc@91
|
1875 let
|
adamc@91
|
1876 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@91
|
1877 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@91
|
1878 NONE => (conError env (UnboundStrInCon (loc, m));
|
adamc@91
|
1879 (strerror, sgnerror))
|
adamc@91
|
1880 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@91
|
1881 ((L'.StrVar n, loc), sgn) ms
|
adamc@10
|
1882
|
adamc@91
|
1883 val t = case E.projectVal env {sgn = sgn, str = str, field = s} of
|
adamc@91
|
1884 NONE => (expError env (UnboundExp (loc, s));
|
adamc@91
|
1885 cerror)
|
adamc@91
|
1886 | SOME t => t
|
adamc@91
|
1887 in
|
adamc@629
|
1888 elabHead (env, denv) infer (L'.EModProj (n, ms, s), loc) t
|
adamc@91
|
1889 end)
|
adamc@86
|
1890
|
adamc@349
|
1891 | L.EWild =>
|
adamc@210
|
1892 let
|
adamc@349
|
1893 val r = ref NONE
|
adamc@349
|
1894 val c = cunif (loc, (L'.KType, loc))
|
adamc@210
|
1895 in
|
adamc@349
|
1896 ((L'.EUnif r, loc), c, [TypeClass (env, c, r, loc)])
|
adamc@210
|
1897 end
|
adamc@210
|
1898
|
adamc@91
|
1899 | L.EApp (e1, e2) =>
|
adamc@91
|
1900 let
|
adamc@91
|
1901 val (e1', t1, gs1) = elabExp (env, denv) e1
|
adamc@1093
|
1902
|
adamc@403
|
1903 val (e2', t2, gs2) = elabExp (env, denv) e2
|
adamc@71
|
1904
|
adamc@91
|
1905 val dom = cunif (loc, ktype)
|
adamc@91
|
1906 val ran = cunif (loc, ktype)
|
adamc@838
|
1907 val t = (L'.TFun (dom, ran), loc)
|
adamc@1093
|
1908
|
adamc@1093
|
1909 val () = checkCon env e1' t1 t
|
adamc@1093
|
1910 val () = checkCon env e2' t2 dom
|
adamc@1093
|
1911
|
adamc@1093
|
1912 val ef = (L'.EApp (e1', e2'), loc)
|
adamc@1093
|
1913 val (ef, et, gs3) =
|
adamc@1093
|
1914 case findHead e1 e1' of
|
adamc@1093
|
1915 NONE => (ef, ran, [])
|
adamc@1093
|
1916 | SOME infer => elabHead (env, denv) infer ef ran
|
adamc@91
|
1917 in
|
adamc@1093
|
1918 (ef, et, gs1 @ gs2 @ gs3)
|
adamc@91
|
1919 end
|
adamc@91
|
1920 | L.EAbs (x, to, e) =>
|
adamc@91
|
1921 let
|
adamc@91
|
1922 val (t', gs1) = case to of
|
adamc@91
|
1923 NONE => (cunif (loc, ktype), [])
|
adamc@91
|
1924 | SOME t =>
|
adamc@91
|
1925 let
|
adamc@91
|
1926 val (t', tk, gs) = elabCon (env, denv) t
|
adamc@91
|
1927 in
|
adamc@91
|
1928 checkKind env t' tk ktype;
|
adamc@91
|
1929 (t', gs)
|
adamc@91
|
1930 end
|
adamc@467
|
1931 val dom = normClassConstraint env t'
|
adamc@467
|
1932 val (e', et, gs2) = elabExp (E.pushERel env x dom, denv) e
|
adamc@91
|
1933 in
|
adamc@91
|
1934 ((L'.EAbs (x, t', et, e'), loc),
|
adamc@91
|
1935 (L'.TFun (t', et), loc),
|
adamc@467
|
1936 enD gs1 @ gs2)
|
adamc@91
|
1937 end
|
adamc@91
|
1938 | L.ECApp (e, c) =>
|
adamc@91
|
1939 let
|
adamc@91
|
1940 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@1093
|
1941
|
adamc@328
|
1942 val oldEt = et
|
adamc@403
|
1943 val (c', ck, gs2) = elabCon (env, denv) c
|
adamc@628
|
1944 val (et', _) = hnormCon env et
|
adamc@91
|
1945 in
|
adamc@91
|
1946 case et' of
|
adamc@91
|
1947 L'.CError => (eerror, cerror, [])
|
adamc@328
|
1948 | L'.TCFun (_, x, k, eb) =>
|
adamc@91
|
1949 let
|
adamc@91
|
1950 val () = checkKind env c' ck k
|
adam@1303
|
1951 val eb' = subConInCon env (0, c') eb
|
adamc@1093
|
1952
|
adamc@1093
|
1953 val ef = (L'.ECApp (e', c'), loc)
|
adamc@1093
|
1954 val (ef, eb', gs3) =
|
adamc@1093
|
1955 case findHead e e' of
|
adamc@1093
|
1956 NONE => (ef, eb', [])
|
adamc@1093
|
1957 | SOME infer => elabHead (env, denv) infer ef eb'
|
adamc@91
|
1958 in
|
adamc@328
|
1959 (*prefaces "Elab ECApp" [("e", SourcePrint.p_exp eAll),
|
adamc@328
|
1960 ("et", p_con env oldEt),
|
adamc@328
|
1961 ("x", PD.string x),
|
adamc@328
|
1962 ("eb", p_con (E.pushCRel env x k) eb),
|
adamc@328
|
1963 ("c", p_con env c'),
|
adamc@328
|
1964 ("eb'", p_con env eb')];*)
|
adamc@1093
|
1965 (ef, eb', gs1 @ enD gs2 @ gs3)
|
adamc@91
|
1966 end
|
adamc@91
|
1967
|
adamc@91
|
1968 | _ =>
|
adamc@91
|
1969 (expError env (WrongForm ("constructor function", e', et));
|
adamc@91
|
1970 (eerror, cerror, []))
|
adamc@91
|
1971 end
|
adamc@91
|
1972 | L.ECAbs (expl, x, k, e) =>
|
adamc@91
|
1973 let
|
adamc@91
|
1974 val expl' = elabExplicitness expl
|
adamc@623
|
1975 val k' = elabKind env k
|
adamc@328
|
1976
|
adamc@328
|
1977 val env' = E.pushCRel env x k'
|
adamc@328
|
1978 val (e', et, gs) = elabExp (env', D.enter denv) e
|
adamc@91
|
1979 in
|
adamc@91
|
1980 ((L'.ECAbs (expl', x, k', e'), loc),
|
adamc@91
|
1981 (L'.TCFun (expl', x, k', et), loc),
|
adamc@91
|
1982 gs)
|
adamc@91
|
1983 end
|
adamc@623
|
1984 | L.EKAbs (x, e) =>
|
adamc@623
|
1985 let
|
adamc@623
|
1986 val env' = E.pushKRel env x
|
adamc@623
|
1987 val (e', et, gs) = elabExp (env', denv) e
|
adamc@623
|
1988 in
|
adamc@623
|
1989 ((L'.EKAbs (x, e'), loc),
|
adamc@623
|
1990 (L'.TKFun (x, et), loc),
|
adamc@623
|
1991 gs)
|
adamc@623
|
1992 end
|
adamc@91
|
1993
|
adamc@91
|
1994 | L.EDisjoint (c1, c2, e) =>
|
adamc@91
|
1995 let
|
adamc@91
|
1996 val (c1', k1, gs1) = elabCon (env, denv) c1
|
adamc@91
|
1997 val (c2', k2, gs2) = elabCon (env, denv) c2
|
adamc@91
|
1998
|
adamc@91
|
1999 val ku1 = kunif loc
|
adamc@91
|
2000 val ku2 = kunif loc
|
adamc@91
|
2001
|
adamc@628
|
2002 val denv' = D.assert env denv (c1', c2')
|
adamc@628
|
2003 val (e', t, gs3) = elabExp (env, denv') e
|
adamc@91
|
2004 in
|
adamc@91
|
2005 checkKind env c1' k1 (L'.KRecord ku1, loc);
|
adamc@91
|
2006 checkKind env c2' k2 (L'.KRecord ku2, loc);
|
adamc@91
|
2007
|
adamc@628
|
2008 (e', (L'.TDisjoint (c1', c2', t), loc), enD gs1 @ enD gs2 @ gs3)
|
adamc@91
|
2009 end
|
adamc@629
|
2010 | L.EDisjointApp e =>
|
adamc@629
|
2011 let
|
adamc@629
|
2012 val (e', t, gs1) = elabExp (env, denv) e
|
adamc@629
|
2013
|
adamc@629
|
2014 val k1 = kunif loc
|
adamc@629
|
2015 val c1 = cunif (loc, (L'.KRecord k1, loc))
|
adamc@629
|
2016 val k2 = kunif loc
|
adamc@629
|
2017 val c2 = cunif (loc, (L'.KRecord k2, loc))
|
adamc@629
|
2018 val t' = cunif (loc, ktype)
|
adamc@629
|
2019 val () = checkCon env e' t (L'.TDisjoint (c1, c2, t'), loc)
|
adamc@629
|
2020 val gs2 = D.prove env denv (c1, c2, loc)
|
adamc@629
|
2021 in
|
adamc@629
|
2022 (e', t', enD gs2 @ gs1)
|
adamc@629
|
2023 end
|
adamc@91
|
2024
|
adamc@91
|
2025 | L.ERecord xes =>
|
adamc@91
|
2026 let
|
adamc@91
|
2027 val (xes', gs) = ListUtil.foldlMap (fn ((x, e), gs) =>
|
adamc@91
|
2028 let
|
adamc@91
|
2029 val (x', xk, gs1) = elabCon (env, denv) x
|
adamc@91
|
2030 val (e', et, gs2) = elabExp (env, denv) e
|
adamc@91
|
2031 in
|
adamc@91
|
2032 checkKind env x' xk kname;
|
adamc@228
|
2033 ((x', e', et), enD gs1 @ gs2 @ gs)
|
adamc@91
|
2034 end)
|
adamc@91
|
2035 [] xes
|
adamc@91
|
2036
|
adamc@91
|
2037 val k = (L'.KType, loc)
|
adamc@91
|
2038
|
adamc@91
|
2039 fun prove (xets, gs) =
|
adamc@91
|
2040 case xets of
|
adamc@91
|
2041 [] => gs
|
adamc@91
|
2042 | (x, _, t) :: rest =>
|
adamc@91
|
2043 let
|
adamc@91
|
2044 val xc = (x, t)
|
adamc@91
|
2045 val r1 = (L'.CRecord (k, [xc]), loc)
|
adamc@91
|
2046 val gs = foldl (fn ((x', _, t'), gs) =>
|
adamc@91
|
2047 let
|
adamc@91
|
2048 val xc' = (x', t')
|
adamc@91
|
2049 val r2 = (L'.CRecord (k, [xc']), loc)
|
adamc@91
|
2050 in
|
adamc@91
|
2051 D.prove env denv (r1, r2, loc) @ gs
|
adamc@91
|
2052 end)
|
adamc@91
|
2053 gs rest
|
adamc@91
|
2054 in
|
adamc@91
|
2055 prove (rest, gs)
|
adamc@91
|
2056 end
|
adamc@228
|
2057
|
adamc@228
|
2058 val gsD = List.mapPartial (fn Disjoint d => SOME d | _ => NONE) gs
|
adamc@228
|
2059 val gsO = List.filter (fn Disjoint _ => false | _ => true) gs
|
adamc@91
|
2060 in
|
adamc@255
|
2061 (*TextIO.print ("|gsO| = " ^ Int.toString (length gsO) ^ "\n");*)
|
adamc@91
|
2062 ((L'.ERecord xes', loc),
|
adamc@91
|
2063 (L'.TRecord (L'.CRecord (ktype, map (fn (x', _, et) => (x', et)) xes'), loc), loc),
|
adamc@228
|
2064 enD (prove (xes', gsD)) @ gsO)
|
adamc@91
|
2065 end
|
adamc@91
|
2066
|
adamc@91
|
2067 | L.EField (e, c) =>
|
adamc@91
|
2068 let
|
adamc@91
|
2069 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@91
|
2070 val (c', ck, gs2) = elabCon (env, denv) c
|
adamc@91
|
2071
|
adamc@91
|
2072 val ft = cunif (loc, ktype)
|
adamc@91
|
2073 val rest = cunif (loc, ktype_record)
|
adamc@91
|
2074 val first = (L'.CRecord (ktype, [(c', ft)]), loc)
|
adamc@629
|
2075 val () = checkCon env e' et
|
adamc@629
|
2076 (L'.TRecord (L'.CConcat (first, rest), loc), loc);
|
adamc@628
|
2077 val gs3 = D.prove env denv (first, rest, loc)
|
adamc@91
|
2078 in
|
adamc@628
|
2079 ((L'.EField (e', c', {field = ft, rest = rest}), loc), ft, gs1 @ enD gs2 @ enD gs3)
|
adamc@91
|
2080 end
|
adamc@91
|
2081
|
adamc@445
|
2082 | L.EConcat (e1, e2) =>
|
adamc@339
|
2083 let
|
adamc@339
|
2084 val (e1', e1t, gs1) = elabExp (env, denv) e1
|
adamc@445
|
2085 val (e2', e2t, gs2) = elabExp (env, denv) e2
|
adamc@445
|
2086
|
adamc@445
|
2087 val r1 = cunif (loc, ktype_record)
|
adamc@445
|
2088 val r2 = cunif (loc, ktype_record)
|
adamc@445
|
2089
|
adamc@629
|
2090 val () = checkCon env e1' e1t (L'.TRecord r1, loc)
|
adamc@629
|
2091 val () = checkCon env e2' e2t (L'.TRecord r2, loc)
|
adamc@629
|
2092
|
adamc@628
|
2093 val gs3 = D.prove env denv (r1, r2, loc)
|
adamc@339
|
2094 in
|
adamc@445
|
2095 ((L'.EConcat (e1', r1, e2', r2), loc),
|
adamc@445
|
2096 (L'.TRecord ((L'.CConcat (r1, r2), loc)), loc),
|
adamc@628
|
2097 gs1 @ gs2 @ enD gs3)
|
adamc@339
|
2098 end
|
adamc@149
|
2099 | L.ECut (e, c) =>
|
adamc@149
|
2100 let
|
adamc@149
|
2101 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@149
|
2102 val (c', ck, gs2) = elabCon (env, denv) c
|
adamc@149
|
2103
|
adamc@149
|
2104 val ft = cunif (loc, ktype)
|
adamc@149
|
2105 val rest = cunif (loc, ktype_record)
|
adamc@149
|
2106 val first = (L'.CRecord (ktype, [(c', ft)]), loc)
|
adamc@629
|
2107
|
adamc@629
|
2108 val () = checkCon env e' et
|
adamc@629
|
2109 (L'.TRecord (L'.CConcat (first, rest), loc), loc)
|
adamc@149
|
2110
|
adamc@628
|
2111 val gs3 = D.prove env denv (first, rest, loc)
|
adamc@149
|
2112 in
|
adam@1299
|
2113 checkKind env c' ck kname;
|
adamc@228
|
2114 ((L'.ECut (e', c', {field = ft, rest = rest}), loc), (L'.TRecord rest, loc),
|
adamc@628
|
2115 gs1 @ enD gs2 @ enD gs3)
|
adamc@149
|
2116 end
|
adamc@493
|
2117 | L.ECutMulti (e, c) =>
|
adamc@493
|
2118 let
|
adamc@493
|
2119 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@493
|
2120 val (c', ck, gs2) = elabCon (env, denv) c
|
adamc@493
|
2121
|
adamc@493
|
2122 val rest = cunif (loc, ktype_record)
|
adamc@629
|
2123
|
adamc@629
|
2124 val () = checkCon env e' et
|
adamc@629
|
2125 (L'.TRecord (L'.CConcat (c', rest), loc), loc)
|
adamc@493
|
2126
|
adamc@628
|
2127 val gs3 = D.prove env denv (c', rest, loc)
|
adamc@493
|
2128 in
|
adam@1299
|
2129 checkKind env c' ck (L'.KRecord ktype, loc);
|
adamc@493
|
2130 ((L'.ECutMulti (e', c', {rest = rest}), loc), (L'.TRecord rest, loc),
|
adamc@628
|
2131 gs1 @ enD gs2 @ enD gs3)
|
adamc@493
|
2132 end
|
adamc@149
|
2133
|
adamc@171
|
2134 | L.ECase (e, pes) =>
|
adamc@171
|
2135 let
|
adamc@171
|
2136 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@171
|
2137 val result = cunif (loc, (L'.KType, loc))
|
adamc@171
|
2138 val (pes', gs) = ListUtil.foldlMap
|
adamc@171
|
2139 (fn ((p, e), gs) =>
|
adamc@171
|
2140 let
|
adamc@628
|
2141 val ((p', pt), (env, _)) = elabPat (p, (env, SS.empty))
|
adamc@628
|
2142
|
adamc@629
|
2143 val (e', et', gs1) = elabExp (env, denv) e
|
adamc@171
|
2144 in
|
adamc@628
|
2145 checkPatCon env p' pt et;
|
adamc@629
|
2146 checkCon env e' et' result;
|
adamc@628
|
2147 ((p', e'), gs1 @ gs)
|
adamc@171
|
2148 end)
|
adamc@171
|
2149 gs1 pes
|
adamc@171
|
2150 in
|
adamc@819
|
2151 case exhaustive (env, et, map #1 pes', loc) of
|
adamc@819
|
2152 NONE => ()
|
adamc@830
|
2153 | SOME p => if !mayDelay then
|
adamc@830
|
2154 delayedExhaustives := (env, et, map #1 pes', loc) :: !delayedExhaustives
|
adamc@830
|
2155 else
|
adamc@830
|
2156 expError env (Inexhaustive (loc, p));
|
adamc@172
|
2157
|
adamc@628
|
2158 ((L'.ECase (e', pes', {disc = et, result = result}), loc), result, gs)
|
adamc@171
|
2159 end
|
adamc@447
|
2160
|
adamc@447
|
2161 | L.ELet (eds, e) =>
|
adamc@447
|
2162 let
|
adamc@447
|
2163 val (eds, (env, gs1)) = ListUtil.foldlMap (elabEdecl denv) (env, []) eds
|
adamc@447
|
2164 val (e, t, gs2) = elabExp (env, denv) e
|
adamc@447
|
2165 in
|
adamc@825
|
2166 ((L'.ELet (eds, e, t), loc), t, gs1 @ gs2)
|
adamc@447
|
2167 end
|
adamc@280
|
2168 in
|
adamc@819
|
2169 (*prefaces "/elabExp" [("e", SourcePrint.p_exp eAll)];*)
|
adamc@280
|
2170 r
|
adamc@91
|
2171 end
|
adamc@31
|
2172
|
adamc@628
|
2173 and elabEdecl denv (dAll as (d, loc), (env, gs)) =
|
adamc@447
|
2174 let
|
adamc@447
|
2175 val r =
|
adamc@447
|
2176 case d of
|
adamc@825
|
2177 L.EDVal (p, e) =>
|
adamc@447
|
2178 let
|
adamc@825
|
2179 val ((p', pt), (env', _)) = elabPat (p, (env, SS.empty))
|
adamc@825
|
2180 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@825
|
2181
|
adamc@825
|
2182 val () = checkCon env e' et pt
|
adamc@825
|
2183
|
adamc@825
|
2184 val pt = normClassConstraint env pt
|
adamc@447
|
2185 in
|
adamc@830
|
2186 case exhaustive (env, et, [p'], loc) of
|
adamc@830
|
2187 NONE => ()
|
adamc@830
|
2188 | SOME p => if !mayDelay then
|
adamc@830
|
2189 delayedExhaustives := (env, et, [p'], loc) :: !delayedExhaustives
|
adamc@830
|
2190 else
|
adamc@830
|
2191 expError env (Inexhaustive (loc, p));
|
adamc@830
|
2192
|
adamc@825
|
2193 ((L'.EDVal (p', pt, e'), loc), (env', gs1 @ gs))
|
adamc@447
|
2194 end
|
adamc@447
|
2195 | L.EDValRec vis =>
|
adamc@447
|
2196 let
|
adamc@447
|
2197 fun allowable (e, _) =
|
adamc@447
|
2198 case e of
|
adamc@447
|
2199 L.EAbs _ => true
|
adamc@447
|
2200 | L.ECAbs (_, _, _, e) => allowable e
|
adamc@623
|
2201 | L.EKAbs (_, e) => allowable e
|
adamc@447
|
2202 | L.EDisjoint (_, _, e) => allowable e
|
adamc@447
|
2203 | _ => false
|
adamc@447
|
2204
|
adamc@447
|
2205 val (vis, gs) = ListUtil.foldlMap
|
adamc@447
|
2206 (fn ((x, co, e), gs) =>
|
adamc@447
|
2207 let
|
adamc@447
|
2208 val (c', _, gs1) = case co of
|
adamc@447
|
2209 NONE => (cunif (loc, ktype), ktype, [])
|
adamc@447
|
2210 | SOME c => elabCon (env, denv) c
|
adamc@447
|
2211 in
|
adamc@447
|
2212 ((x, c', e), enD gs1 @ gs)
|
adamc@447
|
2213 end) gs vis
|
adamc@447
|
2214
|
adamc@447
|
2215 val env = foldl (fn ((x, c', _), env) => E.pushERel env x c') env vis
|
adamc@447
|
2216
|
adamc@447
|
2217 val (vis, gs) = ListUtil.foldlMap (fn ((x, c', e), gs) =>
|
adamc@447
|
2218 let
|
adamc@447
|
2219 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@447
|
2220 in
|
adamc@628
|
2221 checkCon env e' et c';
|
adamc@447
|
2222 if allowable e then
|
adamc@447
|
2223 ()
|
adamc@447
|
2224 else
|
adamc@447
|
2225 expError env (IllegalRec (x, e'));
|
adamc@628
|
2226 ((x, c', e'), gs1 @ gs)
|
adamc@447
|
2227 end) gs vis
|
adamc@447
|
2228 in
|
adamc@447
|
2229 ((L'.EDValRec vis, loc), (env, gs))
|
adamc@447
|
2230 end
|
adamc@447
|
2231 in
|
adamc@447
|
2232 r
|
adamc@447
|
2233 end
|
adamc@447
|
2234
|
adamc@42
|
2235 val hnormSgn = E.hnormSgn
|
adamc@31
|
2236
|
adamc@210
|
2237 fun tableOf () = (L'.CModProj (!basis_r, [], "sql_table"), ErrorMsg.dummySpan)
|
adamc@338
|
2238 fun sequenceOf () = (L'.CModProj (!basis_r, [], "sql_sequence"), ErrorMsg.dummySpan)
|
adamc@754
|
2239 fun viewOf () = (L'.CModProj (!basis_r, [], "sql_view"), ErrorMsg.dummySpan)
|
adamc@754
|
2240 fun queryOf () = (L'.CModProj (!basis_r, [], "sql_query"), ErrorMsg.dummySpan)
|
adamc@459
|
2241 fun cookieOf () = (L'.CModProj (!basis_r, [], "http_cookie"), ErrorMsg.dummySpan)
|
adamc@718
|
2242 fun styleOf () = (L'.CModProj (!basis_r, [], "css_class"), ErrorMsg.dummySpan)
|
adamc@205
|
2243
|
adamc@469
|
2244 fun dopenConstraints (loc, env, denv) {str, strs} =
|
adamc@469
|
2245 case E.lookupStr env str of
|
adamc@469
|
2246 NONE => (strError env (UnboundStr (loc, str));
|
adamc@469
|
2247 denv)
|
adamc@469
|
2248 | SOME (n, sgn) =>
|
adamc@469
|
2249 let
|
adamc@469
|
2250 val (st, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@469
|
2251 case E.projectStr env {str = str, sgn = sgn, field = m} of
|
adamc@469
|
2252 NONE => (strError env (UnboundStr (loc, m));
|
adamc@469
|
2253 (strerror, sgnerror))
|
adamc@469
|
2254 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@469
|
2255 ((L'.StrVar n, loc), sgn) strs
|
adamc@1030
|
2256
|
adamc@1030
|
2257 fun collect first (st, sgn) =
|
adamc@1030
|
2258 case E.projectConstraints env {sgn = sgn, str = st} of
|
adamc@1182
|
2259 NONE => []
|
adamc@1030
|
2260 | SOME cs =>
|
adamc@1030
|
2261 case #1 (hnormSgn env sgn) of
|
adamc@1030
|
2262 L'.SgnConst sgis =>
|
adamc@1030
|
2263 foldl (fn (sgi, cs) =>
|
adamc@1030
|
2264 case #1 sgi of
|
adamc@1030
|
2265 L'.SgiStr (x, _, _) =>
|
adamc@1030
|
2266 (case E.projectStr env {sgn = sgn, str = st, field = x} of
|
adamc@1030
|
2267 NONE => raise Fail "Elaborate: projectStr in collect"
|
adamc@1030
|
2268 | SOME sgn' =>
|
adamc@1030
|
2269 List.revAppend (collect false ((L'.StrProj (st, x), loc), sgn'),
|
adamc@1030
|
2270 cs))
|
adamc@1030
|
2271 | _ => cs) cs sgis
|
adamc@1030
|
2272 | _ => cs
|
adamc@469
|
2273 in
|
adamc@1030
|
2274 foldl (fn ((c1, c2), denv) =>
|
adamc@1030
|
2275 D.assert env denv (c1, c2)) denv (collect true (st, sgn))
|
adamc@469
|
2276 end
|
adamc@469
|
2277
|
adamc@88
|
2278 fun elabSgn_item ((sgi, loc), (env, denv, gs)) =
|
adamc@1270
|
2279 ((*Print.preface ("elabSgi", SourcePrint.p_sgn_item (sgi, loc));*)
|
adamc@1270
|
2280 case sgi of
|
adamc@1270
|
2281 L.SgiConAbs (x, k) =>
|
adamc@1270
|
2282 let
|
adamc@1270
|
2283 val k' = elabKind env k
|
adamc@1270
|
2284
|
adamc@1270
|
2285 val (env', n) = E.pushCNamed env x k' NONE
|
adamc@1270
|
2286 in
|
adamc@1270
|
2287 ([(L'.SgiConAbs (x, n, k'), loc)], (env', denv, gs))
|
adamc@1270
|
2288 end
|
adamc@1270
|
2289
|
adamc@1270
|
2290 | L.SgiCon (x, ko, c) =>
|
adamc@1270
|
2291 let
|
adamc@1270
|
2292 val k' = case ko of
|
adamc@1270
|
2293 NONE => kunif loc
|
adamc@1270
|
2294 | SOME k => elabKind env k
|
adamc@1270
|
2295
|
adamc@1270
|
2296 val (c', ck, gs') = elabCon (env, denv) c
|
adamc@1270
|
2297 val (env', n) = E.pushCNamed env x k' (SOME c')
|
adamc@1270
|
2298 in
|
adamc@1270
|
2299 checkKind env c' ck k';
|
adamc@1270
|
2300
|
adamc@1270
|
2301 ([(L'.SgiCon (x, n, k', c'), loc)], (env', denv, gs' @ gs))
|
adamc@1270
|
2302 end
|
adamc@1270
|
2303
|
adamc@1270
|
2304 | L.SgiDatatype dts =>
|
adamc@1270
|
2305 let
|
adamc@1270
|
2306 val k = (L'.KType, loc)
|
adamc@1270
|
2307
|
adamc@1270
|
2308 val (dts, env) = ListUtil.foldlMap (fn ((x, xs, xcs), env) =>
|
adamc@1270
|
2309 let
|
adamc@1270
|
2310 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@1270
|
2311 val (env, n) = E.pushCNamed env x k' NONE
|
adamc@1270
|
2312 in
|
adamc@1270
|
2313 ((x, n, xs, xcs), env)
|
adamc@1270
|
2314 end)
|
adamc@1270
|
2315 env dts
|
adamc@1270
|
2316
|
adamc@1270
|
2317 val (dts, env) = ListUtil.foldlMap
|
adamc@1270
|
2318 (fn ((x, n, xs, xcs), env) =>
|
adamc@1270
|
2319 let
|
adamc@1270
|
2320 val t = (L'.CNamed n, loc)
|
adamc@1270
|
2321 val nxs = length xs - 1
|
adamc@1270
|
2322 val t = ListUtil.foldli (fn (i, _, t) =>
|
adamc@1270
|
2323 (L'.CApp (t, (L'.CRel (nxs - i), loc)), loc)) t xs
|
adamc@1270
|
2324
|
adamc@1270
|
2325 val (env', denv') = foldl (fn (x, (env', denv')) =>
|
adamc@1270
|
2326 (E.pushCRel env' x k,
|
adamc@1270
|
2327 D.enter denv')) (env, denv) xs
|
adamc@1270
|
2328
|
adamc@1270
|
2329 val (xcs, (used, env, gs)) =
|
adamc@1270
|
2330 ListUtil.foldlMap
|
adamc@1270
|
2331 (fn ((x, to), (used, env, gs)) =>
|
adamc@1270
|
2332 let
|
adamc@1270
|
2333 val (to, t, gs') = case to of
|
adamc@1270
|
2334 NONE => (NONE, t, gs)
|
adamc@1270
|
2335 | SOME t' =>
|
adamc@1270
|
2336 let
|
adamc@1270
|
2337 val (t', tk, gs') =
|
adamc@1270
|
2338 elabCon (env', denv') t'
|
adamc@1270
|
2339 in
|
adamc@1270
|
2340 checkKind env' t' tk k;
|
adamc@1270
|
2341 (SOME t',
|
adamc@1270
|
2342 (L'.TFun (t', t), loc),
|
adamc@1270
|
2343 gs' @ gs)
|
adamc@1270
|
2344 end
|
adamc@1270
|
2345 val t = foldl (fn (x, t) => (L'.TCFun (L'.Implicit, x, k, t), loc))
|
adamc@1270
|
2346 t xs
|
adamc@1270
|
2347
|
adamc@1270
|
2348 val (env, n') = E.pushENamed env x t
|
adamc@1270
|
2349 in
|
adamc@1270
|
2350 if SS.member (used, x) then
|
adamc@1270
|
2351 strError env (DuplicateConstructor (x, loc))
|
adamc@1270
|
2352 else
|
adamc@1270
|
2353 ();
|
adamc@1270
|
2354 ((x, n', to), (SS.add (used, x), env, gs'))
|
adamc@1270
|
2355 end)
|
adamc@1270
|
2356 (SS.empty, env, []) xcs
|
adamc@1270
|
2357 in
|
adamc@1270
|
2358 ((x, n, xs, xcs), E.pushDatatype env n xs xcs)
|
adamc@1270
|
2359 end)
|
adamc@1270
|
2360 env dts
|
adamc@1270
|
2361 in
|
adamc@1270
|
2362 ([(L'.SgiDatatype dts, loc)], (env, denv, gs))
|
adamc@1270
|
2363 end
|
adamc@1270
|
2364
|
adamc@1270
|
2365 | L.SgiDatatypeImp (_, [], _) => raise Fail "Empty SgiDatatypeImp"
|
adamc@1270
|
2366
|
adamc@1270
|
2367 | L.SgiDatatypeImp (x, m1 :: ms, s) =>
|
adamc@1270
|
2368 (case E.lookupStr env m1 of
|
adamc@1270
|
2369 NONE => (strError env (UnboundStr (loc, m1));
|
adamc@1270
|
2370 ([], (env, denv, gs)))
|
adamc@1270
|
2371 | SOME (n, sgn) =>
|
adamc@1270
|
2372 let
|
adamc@1270
|
2373 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@1270
|
2374 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@1270
|
2375 NONE => (conError env (UnboundStrInCon (loc, m));
|
adamc@1270
|
2376 (strerror, sgnerror))
|
adamc@1270
|
2377 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@1270
|
2378 ((L'.StrVar n, loc), sgn) ms
|
adamc@1270
|
2379 in
|
adamc@1270
|
2380 case hnormCon env (L'.CModProj (n, ms, s), loc) of
|
adamc@1270
|
2381 (L'.CModProj (n, ms, s), _) =>
|
adamc@1270
|
2382 (case E.projectDatatype env {sgn = sgn, str = str, field = s} of
|
adamc@1270
|
2383 NONE => (conError env (UnboundDatatype (loc, s));
|
adamc@1270
|
2384 ([], (env, denv, [])))
|
adamc@1270
|
2385 | SOME (xs, xncs) =>
|
adamc@1270
|
2386 let
|
adamc@1270
|
2387 val k = (L'.KType, loc)
|
adamc@1270
|
2388 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@1270
|
2389
|
adamc@1270
|
2390 val t = (L'.CModProj (n, ms, s), loc)
|
adamc@1270
|
2391 val (env, n') = E.pushCNamed env x k' (SOME t)
|
adamc@1270
|
2392 val env = E.pushDatatype env n' xs xncs
|
adamc@1270
|
2393
|
adamc@1270
|
2394 val t = (L'.CNamed n', loc)
|
adamc@1270
|
2395 val env = foldl (fn ((x, n, to), env) =>
|
adamc@805
|
2396 let
|
adamc@1270
|
2397 val t = case to of
|
adamc@1270
|
2398 NONE => t
|
adamc@1270
|
2399 | SOME t' => (L'.TFun (t', t), loc)
|
adamc@1270
|
2400
|
adamc@1270
|
2401 val t = foldr (fn (x, t) =>
|
adamc@1270
|
2402 (L'.TCFun (L'.Implicit, x, k, t), loc))
|
adamc@1270
|
2403 t xs
|
adamc@805
|
2404 in
|
adamc@1270
|
2405 E.pushENamedAs env x n t
|
adamc@1270
|
2406 end) env xncs
|
adamc@1270
|
2407 in
|
adamc@1270
|
2408 ([(L'.SgiDatatypeImp (x, n', n, ms, s, xs, xncs), loc)], (env, denv, []))
|
adamc@1270
|
2409 end)
|
adamc@1270
|
2410 | _ => (strError env (NotDatatype loc);
|
adamc@1270
|
2411 ([], (env, denv, [])))
|
adamc@1270
|
2412 end)
|
adamc@1270
|
2413
|
adamc@1270
|
2414 | L.SgiVal (x, c) =>
|
adamc@1270
|
2415 let
|
adamc@1270
|
2416 val (c', ck, gs') = elabCon (env, denv) c
|
adamc@1270
|
2417
|
adamc@1270
|
2418 val old = c'
|
adamc@1270
|
2419 val c' = normClassConstraint env c'
|
adamc@1270
|
2420 val (env', n) = E.pushENamed env x c'
|
adamc@1270
|
2421 in
|
adamc@1270
|
2422 (unifyKinds env ck ktype
|
adamc@1270
|
2423 handle KUnify ue => strError env (NotType (loc, ck, ue)));
|
adamc@1270
|
2424
|
adamc@1270
|
2425 ([(L'.SgiVal (x, n, c'), loc)], (env', denv, gs' @ gs))
|
adamc@1270
|
2426 end
|
adamc@1270
|
2427
|
adamc@1270
|
2428 | L.SgiTable (x, c, pe, ce) =>
|
adamc@1270
|
2429 let
|
adamc@1270
|
2430 val cstK = (L'.KRecord (L'.KRecord (L'.KUnit, loc), loc), loc)
|
adamc@1270
|
2431
|
adamc@1270
|
2432 val (c', ck, gs') = elabCon (env, denv) c
|
adamc@1270
|
2433 val pkey = cunif (loc, cstK)
|
adamc@1270
|
2434 val visible = cunif (loc, cstK)
|
adamc@1270
|
2435 val (env', ds, uniques) =
|
adamc@1270
|
2436 case (#1 pe, #1 ce) of
|
adamc@1270
|
2437 (L.EVar (["Basis"], "no_primary_key", _), L.EVar (["Basis"], "no_constraint", _)) =>
|
adamc@1270
|
2438 let
|
adamc@1270
|
2439 val x' = x ^ "_hidden_constraints"
|
adamc@1270
|
2440 val (env', hidden_n) = E.pushCNamed env x' cstK NONE
|
adamc@1270
|
2441 val hidden = (L'.CNamed hidden_n, loc)
|
adamc@1270
|
2442 in
|
adamc@1270
|
2443 (env', [(L'.SgiConAbs (x', hidden_n, cstK), loc)], (L'.CConcat (visible, hidden), loc))
|
adamc@1270
|
2444 end
|
adamc@1270
|
2445 | _ => (env, [], visible)
|
adamc@1270
|
2446
|
adamc@1270
|
2447 val ct = tableOf ()
|
adamc@1270
|
2448 val ct = (L'.CApp (ct, c'), loc)
|
adamc@1270
|
2449 val ct = (L'.CApp (ct, (L'.CConcat (pkey, uniques), loc)), loc)
|
adamc@1270
|
2450
|
adamc@1270
|
2451 val (pe', pet, gs'') = elabExp (env', denv) pe
|
adamc@1270
|
2452 val gs'' = List.mapPartial (fn Disjoint x => SOME x
|
adamc@707
|
2453 | _ => NONE) gs''
|
adamc@707
|
2454
|
adamc@1270
|
2455 val pst = (L'.CModProj (!basis_r, [], "primary_key"), loc)
|
adamc@1270
|
2456 val pst = (L'.CApp (pst, c'), loc)
|
adamc@1270
|
2457 val pst = (L'.CApp (pst, pkey), loc)
|
adamc@1270
|
2458
|
adamc@1270
|
2459 val (env', n) = E.pushENamed env' x ct
|
adamc@1270
|
2460
|
adamc@1270
|
2461 val (ce', cet, gs''') = elabExp (env', denv) ce
|
adamc@1270
|
2462 val gs''' = List.mapPartial (fn Disjoint x => SOME x
|
adamc@1270
|
2463 | _ => NONE) gs'''
|
adamc@1270
|
2464
|
adamc@1270
|
2465 val cst = (L'.CModProj (!basis_r, [], "sql_constraints"), loc)
|
adamc@1270
|
2466 val cst = (L'.CApp (cst, c'), loc)
|
adamc@1270
|
2467 val cst = (L'.CApp (cst, visible), loc)
|
adamc@1270
|
2468 in
|
adamc@1270
|
2469 checkKind env c' ck (L'.KRecord (L'.KType, loc), loc);
|
adamc@1270
|
2470 checkCon env' pe' pet pst;
|
adamc@1270
|
2471 checkCon env' ce' cet cst;
|
adamc@1270
|
2472
|
adamc@1270
|
2473 (ds @ [(L'.SgiVal (x, n, ct), loc)], (env', denv, gs''' @ gs'' @ gs' @ gs))
|
adamc@1270
|
2474 end
|
adamc@1270
|
2475
|
adamc@1270
|
2476 | L.SgiStr (x, sgn) =>
|
adamc@1270
|
2477 let
|
adamc@1270
|
2478 val (sgn', gs') = elabSgn (env, denv) sgn
|
adamc@1270
|
2479 val (env', n) = E.pushStrNamed env x sgn'
|
adamc@1270
|
2480 in
|
adamc@1270
|
2481 ([(L'.SgiStr (x, n, sgn'), loc)], (env', denv, gs' @ gs))
|
adamc@1270
|
2482 end
|
adamc@1270
|
2483
|
adamc@1270
|
2484 | L.SgiSgn (x, sgn) =>
|
adamc@1270
|
2485 let
|
adamc@1270
|
2486 val (sgn', gs') = elabSgn (env, denv) sgn
|
adamc@1270
|
2487 val (env', n) = E.pushSgnNamed env x sgn'
|
adamc@1270
|
2488 in
|
adamc@1270
|
2489 ([(L'.SgiSgn (x, n, sgn'), loc)], (env', denv, gs' @ gs))
|
adamc@1270
|
2490 end
|
adamc@1270
|
2491
|
adamc@1270
|
2492 | L.SgiInclude sgn =>
|
adamc@1270
|
2493 let
|
adamc@1270
|
2494 val (sgn', gs') = elabSgn (env, denv) sgn
|
adamc@1270
|
2495 in
|
adamc@1270
|
2496 case #1 (hnormSgn env sgn') of
|
adamc@1270
|
2497 L'.SgnConst sgis =>
|
adamc@1270
|
2498 (sgis, (foldl (fn (sgi, env) => E.sgiBinds env sgi) env sgis, denv, gs' @ gs))
|
adamc@1270
|
2499 | _ => (sgnError env (NotIncludable sgn');
|
adamc@1270
|
2500 ([], (env, denv, [])))
|
adamc@1270
|
2501 end
|
adamc@1270
|
2502
|
adamc@1270
|
2503 | L.SgiConstraint (c1, c2) =>
|
adamc@1270
|
2504 let
|
adamc@1270
|
2505 val (c1', k1, gs1) = elabCon (env, denv) c1
|
adamc@1270
|
2506 val (c2', k2, gs2) = elabCon (env, denv) c2
|
adamc@1270
|
2507
|
adamc@1270
|
2508 val denv = D.assert env denv (c1', c2')
|
adamc@1270
|
2509 in
|
adamc@1270
|
2510 checkKind env c1' k1 (L'.KRecord (kunif loc), loc);
|
adamc@1270
|
2511 checkKind env c2' k2 (L'.KRecord (kunif loc), loc);
|
adamc@1270
|
2512
|
adamc@1270
|
2513 ([(L'.SgiConstraint (c1', c2'), loc)], (env, denv, gs1 @ gs2))
|
adamc@1270
|
2514 end
|
adamc@1270
|
2515
|
adamc@1270
|
2516 | L.SgiClassAbs (x, k) =>
|
adamc@1270
|
2517 let
|
adamc@1270
|
2518 val k = elabKind env k
|
adamc@1270
|
2519 val (env, n) = E.pushCNamed env x k NONE
|
adamc@1270
|
2520 val env = E.pushClass env n
|
adamc@1270
|
2521 in
|
adamc@1270
|
2522 ([(L'.SgiClassAbs (x, n, k), loc)], (env, denv, []))
|
adamc@1270
|
2523 end
|
adamc@1270
|
2524
|
adamc@1270
|
2525 | L.SgiClass (x, k, c) =>
|
adamc@1270
|
2526 let
|
adamc@1270
|
2527 val k = elabKind env k
|
adamc@1270
|
2528 val (c', ck, gs) = elabCon (env, denv) c
|
adamc@1270
|
2529 val (env, n) = E.pushCNamed env x k (SOME c')
|
adamc@1270
|
2530 val env = E.pushClass env n
|
adamc@1270
|
2531 in
|
adamc@1270
|
2532 checkKind env c' ck k;
|
adamc@1270
|
2533 ([(L'.SgiClass (x, n, k, c'), loc)], (env, denv, []))
|
adamc@1270
|
2534 end)
|
adamc@211
|
2535
|
adamc@83
|
2536 and elabSgn (env, denv) (sgn, loc) =
|
adamc@31
|
2537 case sgn of
|
adamc@31
|
2538 L.SgnConst sgis =>
|
adamc@31
|
2539 let
|
adamc@88
|
2540 val (sgis', (_, _, gs)) = ListUtil.foldlMapConcat elabSgn_item (env, denv, []) sgis
|
adamc@62
|
2541
|
adamc@62
|
2542 val _ = foldl (fn ((sgi, loc), (cons, vals, sgns, strs)) =>
|
adamc@62
|
2543 case sgi of
|
adamc@62
|
2544 L'.SgiConAbs (x, _, _) =>
|
adamc@62
|
2545 (if SS.member (cons, x) then
|
adamc@62
|
2546 sgnError env (DuplicateCon (loc, x))
|
adamc@62
|
2547 else
|
adamc@62
|
2548 ();
|
adamc@62
|
2549 (SS.add (cons, x), vals, sgns, strs))
|
adamc@62
|
2550 | L'.SgiCon (x, _, _, _) =>
|
adamc@62
|
2551 (if SS.member (cons, x) then
|
adamc@62
|
2552 sgnError env (DuplicateCon (loc, x))
|
adamc@62
|
2553 else
|
adamc@62
|
2554 ();
|
adamc@62
|
2555 (SS.add (cons, x), vals, sgns, strs))
|
adamc@805
|
2556 | L'.SgiDatatype dts =>
|
adamc@156
|
2557 let
|
adamc@805
|
2558 val (cons, vals) =
|
adamc@805
|
2559 let
|
adamc@805
|
2560 fun doOne ((x, _, _, xncs), (cons, vals)) =
|
adamc@805
|
2561 let
|
adamc@805
|
2562 val vals = foldl (fn ((x, _, _), vals) =>
|
adamc@805
|
2563 (if SS.member (vals, x) then
|
adamc@805
|
2564 sgnError env (DuplicateVal (loc, x))
|
adamc@805
|
2565 else
|
adamc@805
|
2566 ();
|
adamc@805
|
2567 SS.add (vals, x)))
|
adamc@805
|
2568 vals xncs
|
adamc@805
|
2569 in
|
adamc@805
|
2570 if SS.member (cons, x) then
|
adamc@805
|
2571 sgnError env (DuplicateCon (loc, x))
|
adamc@805
|
2572 else
|
adamc@805
|
2573 ();
|
adamc@805
|
2574 (SS.add (cons, x), vals)
|
adamc@805
|
2575 end
|
adamc@805
|
2576 in
|
adamc@805
|
2577 foldl doOne (cons, vals) dts
|
adamc@805
|
2578 end
|
adamc@156
|
2579 in
|
adamc@805
|
2580 (cons, vals, sgns, strs)
|
adamc@156
|
2581 end
|
adamc@191
|
2582 | L'.SgiDatatypeImp (x, _, _, _, _, _, _) =>
|
adamc@156
|
2583 (if SS.member (cons, x) then
|
adamc@156
|
2584 sgnError env (DuplicateCon (loc, x))
|
adamc@156
|
2585 else
|
adamc@156
|
2586 ();
|
adamc@156
|
2587 (SS.add (cons, x), vals, sgns, strs))
|
adamc@62
|
2588 | L'.SgiVal (x, _, _) =>
|
adamc@62
|
2589 (if SS.member (vals, x) then
|
adamc@62
|
2590 sgnError env (DuplicateVal (loc, x))
|
adamc@62
|
2591 else
|
adamc@62
|
2592 ();
|
adamc@62
|
2593 (cons, SS.add (vals, x), sgns, strs))
|
adamc@62
|
2594 | L'.SgiSgn (x, _, _) =>
|
adamc@62
|
2595 (if SS.member (sgns, x) then
|
adamc@62
|
2596 sgnError env (DuplicateSgn (loc, x))
|
adamc@62
|
2597 else
|
adamc@62
|
2598 ();
|
adamc@62
|
2599 (cons, vals, SS.add (sgns, x), strs))
|
adamc@62
|
2600 | L'.SgiStr (x, _, _) =>
|
adamc@62
|
2601 (if SS.member (strs, x) then
|
adamc@62
|
2602 sgnError env (DuplicateStr (loc, x))
|
adamc@62
|
2603 else
|
adamc@62
|
2604 ();
|
adamc@88
|
2605 (cons, vals, sgns, SS.add (strs, x)))
|
adamc@203
|
2606 | L'.SgiConstraint _ => (cons, vals, sgns, strs)
|
adamc@563
|
2607 | L'.SgiClassAbs (x, _, _) =>
|
adamc@211
|
2608 (if SS.member (cons, x) then
|
adamc@211
|
2609 sgnError env (DuplicateCon (loc, x))
|
adamc@211
|
2610 else
|
adamc@211
|
2611 ();
|
adamc@211
|
2612 (SS.add (cons, x), vals, sgns, strs))
|
adamc@563
|
2613 | L'.SgiClass (x, _, _, _) =>
|
adamc@211
|
2614 (if SS.member (cons, x) then
|
adamc@211
|
2615 sgnError env (DuplicateCon (loc, x))
|
adamc@211
|
2616 else
|
adamc@211
|
2617 ();
|
adamc@460
|
2618 (SS.add (cons, x), vals, sgns, strs)))
|
adamc@62
|
2619 (SS.empty, SS.empty, SS.empty, SS.empty) sgis'
|
adamc@31
|
2620 in
|
adamc@83
|
2621 ((L'.SgnConst sgis', loc), gs)
|
adamc@31
|
2622 end
|
adamc@31
|
2623 | L.SgnVar x =>
|
adamc@31
|
2624 (case E.lookupSgn env x of
|
adamc@31
|
2625 NONE =>
|
adamc@31
|
2626 (sgnError env (UnboundSgn (loc, x));
|
adamc@83
|
2627 ((L'.SgnError, loc), []))
|
adamc@83
|
2628 | SOME (n, sgis) => ((L'.SgnVar n, loc), []))
|
adamc@41
|
2629 | L.SgnFun (m, dom, ran) =>
|
adamc@41
|
2630 let
|
adamc@83
|
2631 val (dom', gs1) = elabSgn (env, denv) dom
|
adamc@41
|
2632 val (env', n) = E.pushStrNamed env m dom'
|
adamc@469
|
2633 val denv' = dopenConstraints (loc, env', denv) {str = m, strs = []}
|
adamc@469
|
2634 val (ran', gs2) = elabSgn (env', denv') ran
|
adamc@41
|
2635 in
|
adamc@83
|
2636 ((L'.SgnFun (m, n, dom', ran'), loc), gs1 @ gs2)
|
adamc@41
|
2637 end
|
adamc@42
|
2638 | L.SgnWhere (sgn, x, c) =>
|
adamc@42
|
2639 let
|
adamc@83
|
2640 val (sgn', ds1) = elabSgn (env, denv) sgn
|
adamc@83
|
2641 val (c', ck, ds2) = elabCon (env, denv) c
|
adamc@42
|
2642 in
|
adamc@42
|
2643 case #1 (hnormSgn env sgn') of
|
adamc@83
|
2644 L'.SgnError => (sgnerror, [])
|
adamc@42
|
2645 | L'.SgnConst sgis =>
|
adamc@75
|
2646 if List.exists (fn (L'.SgiConAbs (x', _, k), _) =>
|
adamc@75
|
2647 x' = x andalso
|
adamc@623
|
2648 (unifyKinds env k ck
|
adamc@75
|
2649 handle KUnify x => sgnError env (WhereWrongKind x);
|
adamc@42
|
2650 true)
|
adamc@42
|
2651 | _ => false) sgis then
|
adamc@83
|
2652 ((L'.SgnWhere (sgn', x, c'), loc), ds1 @ ds2)
|
adamc@42
|
2653 else
|
adamc@42
|
2654 (sgnError env (UnWhereable (sgn', x));
|
adamc@83
|
2655 (sgnerror, []))
|
adamc@42
|
2656 | _ => (sgnError env (UnWhereable (sgn', x));
|
adamc@83
|
2657 (sgnerror, []))
|
adamc@42
|
2658 end
|
adamc@59
|
2659 | L.SgnProj (m, ms, x) =>
|
adamc@59
|
2660 (case E.lookupStr env m of
|
adamc@59
|
2661 NONE => (strError env (UnboundStr (loc, m));
|
adamc@83
|
2662 (sgnerror, []))
|
adamc@59
|
2663 | SOME (n, sgn) =>
|
adamc@59
|
2664 let
|
adamc@59
|
2665 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@59
|
2666 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@59
|
2667 NONE => (strError env (UnboundStr (loc, m));
|
adamc@59
|
2668 (strerror, sgnerror))
|
adamc@59
|
2669 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@59
|
2670 ((L'.StrVar n, loc), sgn) ms
|
adamc@59
|
2671 in
|
adamc@59
|
2672 case E.projectSgn env {sgn = sgn, str = str, field = x} of
|
adamc@59
|
2673 NONE => (sgnError env (UnboundSgn (loc, x));
|
adamc@83
|
2674 (sgnerror, []))
|
adamc@83
|
2675 | SOME _ => ((L'.SgnProj (n, ms, x), loc), [])
|
adamc@59
|
2676 end)
|
adamc@59
|
2677
|
adamc@31
|
2678
|
adamc@706
|
2679 and selfify env {str, strs, sgn} =
|
adamc@66
|
2680 case #1 (hnormSgn env sgn) of
|
adamc@66
|
2681 L'.SgnError => sgn
|
adamc@66
|
2682 | L'.SgnVar _ => sgn
|
adamc@66
|
2683
|
adamc@66
|
2684 | L'.SgnConst sgis =>
|
adamc@805
|
2685 (L'.SgnConst (ListUtil.mapConcat (fn (L'.SgiConAbs (x, n, k), loc) =>
|
adamc@805
|
2686 [(L'.SgiCon (x, n, k, (L'.CModProj (str, strs, x), loc)), loc)]
|
adamc@805
|
2687 | (L'.SgiDatatype dts, loc) =>
|
adamc@805
|
2688 map (fn (x, n, xs, xncs) => (L'.SgiDatatypeImp (x, n, str, strs, x, xs, xncs), loc)) dts
|
adamc@563
|
2689 | (L'.SgiClassAbs (x, n, k), loc) =>
|
adamc@805
|
2690 [(L'.SgiClass (x, n, k, (L'.CModProj (str, strs, x), loc)), loc)]
|
adamc@66
|
2691 | (L'.SgiStr (x, n, sgn), loc) =>
|
adamc@805
|
2692 [(L'.SgiStr (x, n, selfify env {str = str, strs = strs @ [x], sgn = sgn}), loc)]
|
adamc@805
|
2693 | x => [x]) sgis), #2 sgn)
|
adamc@66
|
2694 | L'.SgnFun _ => sgn
|
adamc@66
|
2695 | L'.SgnWhere _ => sgn
|
adamc@66
|
2696 | L'.SgnProj (m, ms, x) =>
|
adamc@66
|
2697 case E.projectSgn env {str = foldl (fn (m, str) => (L'.StrProj (str, m), #2 sgn))
|
adamc@66
|
2698 (L'.StrVar m, #2 sgn) ms,
|
adamc@66
|
2699 sgn = #2 (E.lookupStrNamed env m),
|
adamc@66
|
2700 field = x} of
|
adamc@66
|
2701 NONE => raise Fail "Elaborate.selfify: projectSgn returns NONE"
|
adamc@66
|
2702 | SOME sgn => selfify env {str = str, strs = strs, sgn = sgn}
|
adamc@66
|
2703
|
adamc@706
|
2704 and selfifyAt env {str, sgn} =
|
adamc@66
|
2705 let
|
adamc@66
|
2706 fun self (str, _) =
|
adamc@66
|
2707 case str of
|
adamc@66
|
2708 L'.StrVar x => SOME (x, [])
|
adamc@66
|
2709 | L'.StrProj (str, x) =>
|
adamc@66
|
2710 (case self str of
|
adamc@66
|
2711 NONE => NONE
|
adamc@66
|
2712 | SOME (m, ms) => SOME (m, ms @ [x]))
|
adamc@66
|
2713 | _ => NONE
|
adamc@66
|
2714 in
|
adamc@66
|
2715 case self str of
|
adamc@66
|
2716 NONE => sgn
|
adamc@66
|
2717 | SOME (str, strs) => selfify env {sgn = sgn, str = str, strs = strs}
|
adamc@66
|
2718 end
|
adamc@66
|
2719
|
adamc@706
|
2720 and dopen env {str, strs, sgn} =
|
adamc@66
|
2721 let
|
adamc@66
|
2722 val m = foldl (fn (m, str) => (L'.StrProj (str, m), #2 sgn))
|
adamc@66
|
2723 (L'.StrVar str, #2 sgn) strs
|
adamc@66
|
2724 in
|
adamc@66
|
2725 case #1 (hnormSgn env sgn) of
|
adamc@66
|
2726 L'.SgnConst sgis =>
|
adamc@805
|
2727 ListUtil.foldlMapConcat
|
adamc@805
|
2728 (fn ((sgi, loc), env') =>
|
adamc@805
|
2729 let
|
adamc@805
|
2730 val d =
|
adamc@805
|
2731 case sgi of
|
adamc@805
|
2732 L'.SgiConAbs (x, n, k) =>
|
adamc@805
|
2733 let
|
adamc@805
|
2734 val c = (L'.CModProj (str, strs, x), loc)
|
adamc@805
|
2735 in
|
adamc@805
|
2736 [(L'.DCon (x, n, k, c), loc)]
|
adamc@805
|
2737 end
|
adamc@805
|
2738 | L'.SgiCon (x, n, k, c) =>
|
adamc@805
|
2739 [(L'.DCon (x, n, k, (L'.CModProj (str, strs, x), loc)), loc)]
|
adamc@805
|
2740 | L'.SgiDatatype dts =>
|
adamc@805
|
2741 map (fn (x, n, xs, xncs) => (L'.DDatatypeImp (x, n, str, strs, x, xs, xncs), loc)) dts
|
adamc@805
|
2742 | L'.SgiDatatypeImp (x, n, m1, ms, x', xs, xncs) =>
|
adamc@805
|
2743 [(L'.DDatatypeImp (x, n, m1, ms, x', xs, xncs), loc)]
|
adamc@805
|
2744 | L'.SgiVal (x, n, t) =>
|
adamc@805
|
2745 [(L'.DVal (x, n, t, (L'.EModProj (str, strs, x), loc)), loc)]
|
adamc@805
|
2746 | L'.SgiStr (x, n, sgn) =>
|
adamc@805
|
2747 [(L'.DStr (x, n, sgn, (L'.StrProj (m, x), loc)), loc)]
|
adamc@805
|
2748 | L'.SgiSgn (x, n, sgn) =>
|
adamc@805
|
2749 [(L'.DSgn (x, n, (L'.SgnProj (str, strs, x), loc)), loc)]
|
adamc@805
|
2750 | L'.SgiConstraint (c1, c2) =>
|
adamc@805
|
2751 [(L'.DConstraint (c1, c2), loc)]
|
adamc@805
|
2752 | L'.SgiClassAbs (x, n, k) =>
|
adamc@805
|
2753 let
|
adamc@805
|
2754 val c = (L'.CModProj (str, strs, x), loc)
|
adamc@805
|
2755 in
|
adamc@805
|
2756 [(L'.DCon (x, n, k, c), loc)]
|
adamc@805
|
2757 end
|
adamc@805
|
2758 | L'.SgiClass (x, n, k, _) =>
|
adamc@805
|
2759 let
|
adamc@805
|
2760 val c = (L'.CModProj (str, strs, x), loc)
|
adamc@805
|
2761 in
|
adamc@805
|
2762 [(L'.DCon (x, n, k, c), loc)]
|
adamc@805
|
2763 end
|
adamc@805
|
2764 in
|
adamc@805
|
2765 (d, foldl (fn (d, env') => E.declBinds env' d) env' d)
|
adamc@805
|
2766 end)
|
adamc@805
|
2767 env sgis
|
adamc@66
|
2768 | _ => (strError env (UnOpenable sgn);
|
adamc@628
|
2769 ([], env))
|
adamc@66
|
2770 end
|
adamc@66
|
2771
|
adamc@706
|
2772 and sgiOfDecl (d, loc) =
|
adamc@31
|
2773 case d of
|
adamc@123
|
2774 L'.DCon (x, n, k, c) => [(L'.SgiCon (x, n, k, c), loc)]
|
adamc@156
|
2775 | L'.DDatatype x => [(L'.SgiDatatype x, loc)]
|
adamc@156
|
2776 | L'.DDatatypeImp x => [(L'.SgiDatatypeImp x, loc)]
|
adamc@123
|
2777 | L'.DVal (x, n, t, _) => [(L'.SgiVal (x, n, t), loc)]
|
adamc@123
|
2778 | L'.DValRec vis => map (fn (x, n, t, _) => (L'.SgiVal (x, n, t), loc)) vis
|
adamc@123
|
2779 | L'.DSgn (x, n, sgn) => [(L'.SgiSgn (x, n, sgn), loc)]
|
adamc@123
|
2780 | L'.DStr (x, n, sgn, _) => [(L'.SgiStr (x, n, sgn), loc)]
|
adamc@123
|
2781 | L'.DFfiStr (x, n, sgn) => [(L'.SgiStr (x, n, sgn), loc)]
|
adamc@123
|
2782 | L'.DConstraint cs => [(L'.SgiConstraint cs, loc)]
|
adamc@123
|
2783 | L'.DExport _ => []
|
adamc@707
|
2784 | L'.DTable (tn, x, n, c, _, pc, _, cc) =>
|
adamc@707
|
2785 [(L'.SgiVal (x, n, (L'.CApp ((L'.CApp (tableOf (), c), loc),
|
adamc@707
|
2786 (L'.CConcat (pc, cc), loc)), loc)), loc)]
|
adamc@460
|
2787 | L'.DSequence (tn, x, n) => [(L'.SgiVal (x, n, sequenceOf ()), loc)]
|
adamc@754
|
2788 | L'.DView (tn, x, n, _, c) =>
|
adamc@754
|
2789 [(L'.SgiVal (x, n, (L'.CApp (viewOf (), c), loc)), loc)]
|
adamc@563
|
2790 | L'.DClass (x, n, k, c) => [(L'.SgiClass (x, n, k, c), loc)]
|
adamc@271
|
2791 | L'.DDatabase _ => []
|
adamc@460
|
2792 | L'.DCookie (tn, x, n, c) => [(L'.SgiVal (x, n, (L'.CApp (cookieOf (), c), loc)), loc)]
|
adamc@720
|
2793 | L'.DStyle (tn, x, n) => [(L'.SgiVal (x, n, styleOf ()), loc)]
|
adamc@1075
|
2794 | L'.DTask _ => []
|
adamc@1199
|
2795 | L'.DPolicy _ => []
|
adam@1294
|
2796 | L'.DOnError _ => []
|
adamc@88
|
2797
|
adamc@1000
|
2798 and subSgn' counterparts env strLoc sgn1 (sgn2 as (_, loc2)) =
|
adamc@469
|
2799 ((*prefaces "subSgn" [("sgn1", p_sgn env sgn1),
|
adamc@469
|
2800 ("sgn2", p_sgn env sgn2)];*)
|
adamc@35
|
2801 case (#1 (hnormSgn env sgn1), #1 (hnormSgn env sgn2)) of
|
adamc@31
|
2802 (L'.SgnError, _) => ()
|
adamc@31
|
2803 | (_, L'.SgnError) => ()
|
adamc@31
|
2804
|
adamc@31
|
2805 | (L'.SgnConst sgis1, L'.SgnConst sgis2) =>
|
adamc@31
|
2806 let
|
adamc@362
|
2807 (*val () = prefaces "subSgn" [("sgn1", p_sgn env sgn1),
|
adamc@362
|
2808 ("sgn2", p_sgn env sgn2),
|
adamc@362
|
2809 ("sgis1", p_sgn env (L'.SgnConst sgis1, loc2)),
|
adamc@362
|
2810 ("sgis2", p_sgn env (L'.SgnConst sgis2, loc2))]*)
|
adamc@362
|
2811
|
adamc@838
|
2812 fun cpart n = IM.find (!counterparts, n)
|
adamc@838
|
2813 fun cparts (n2, n1) = counterparts := IM.insert (!counterparts, n2, n1)
|
adamc@838
|
2814
|
adamc@838
|
2815 val sub2 = U.Con.map {kind = fn k => k,
|
adamc@838
|
2816 con = fn c =>
|
adamc@838
|
2817 case c of
|
adamc@838
|
2818 L'.CNamed n2 =>
|
adamc@838
|
2819 (case cpart n2 of
|
adamc@838
|
2820 NONE => c
|
adamc@838
|
2821 | SOME n1 => L'.CNamed n1)
|
adamc@838
|
2822 | _ => c}
|
adamc@838
|
2823
|
adamc@628
|
2824 fun folder (sgi2All as (sgi, loc), env) =
|
adamc@31
|
2825 let
|
adamc@362
|
2826 (*val () = prefaces "folder" [("sgis1", p_sgn env (L'.SgnConst sgis1, loc2))]*)
|
adamc@362
|
2827
|
adamc@805
|
2828 fun seek' f p =
|
adamc@31
|
2829 let
|
adamc@628
|
2830 fun seek env ls =
|
adamc@31
|
2831 case ls of
|
adamc@805
|
2832 [] => f env
|
adamc@31
|
2833 | h :: t =>
|
adamc@469
|
2834 case p (env, h) of
|
adamc@469
|
2835 NONE =>
|
adamc@469
|
2836 let
|
adamc@469
|
2837 val env = case #1 h of
|
adamc@469
|
2838 L'.SgiCon (x, n, k, c) =>
|
adamc@471
|
2839 if E.checkENamed env n then
|
adamc@471
|
2840 env
|
adamc@471
|
2841 else
|
adamc@471
|
2842 E.pushCNamedAs env x n k (SOME c)
|
adamc@469
|
2843 | L'.SgiConAbs (x, n, k) =>
|
adamc@471
|
2844 if E.checkENamed env n then
|
adamc@471
|
2845 env
|
adamc@471
|
2846 else
|
adamc@471
|
2847 E.pushCNamedAs env x n k NONE
|
adamc@469
|
2848 | _ => env
|
adamc@469
|
2849 in
|
adamc@628
|
2850 seek (E.sgiBinds env h) t
|
adamc@469
|
2851 end
|
adamc@88
|
2852 | SOME envs => envs
|
adamc@31
|
2853 in
|
adamc@628
|
2854 seek env sgis1
|
adamc@31
|
2855 end
|
adamc@805
|
2856
|
adamc@1000
|
2857 val seek = seek' (fn env => (sgnError env (UnmatchedSgi (strLoc, sgi2All));
|
adamc@805
|
2858 env))
|
adamc@31
|
2859 in
|
adamc@31
|
2860 case sgi of
|
adamc@31
|
2861 L'.SgiConAbs (x, n2, k2) =>
|
adamc@469
|
2862 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@31
|
2863 let
|
adamc@41
|
2864 fun found (x', n1, k1, co1) =
|
adamc@41
|
2865 if x = x' then
|
adamc@41
|
2866 let
|
adamc@623
|
2867 val () = unifyKinds env k1 k2
|
adamc@41
|
2868 handle KUnify (k1, k2, err) =>
|
adamc@1000
|
2869 sgnError env (SgiWrongKind (strLoc, sgi1All, k1,
|
adamc@1000
|
2870 sgi2All, k2, err))
|
adamc@41
|
2871 val env = E.pushCNamedAs env x n1 k1 co1
|
adamc@41
|
2872 in
|
adamc@41
|
2873 SOME (if n1 = n2 then
|
adamc@41
|
2874 env
|
adamc@41
|
2875 else
|
adamc@838
|
2876 (cparts (n2, n1);
|
adamc@838
|
2877 E.pushCNamedAs env x n2 k2 (SOME (L'.CNamed n1, loc2))))
|
adamc@41
|
2878 end
|
adamc@41
|
2879 else
|
adamc@41
|
2880 NONE
|
adamc@31
|
2881 in
|
adamc@31
|
2882 case sgi1 of
|
adamc@41
|
2883 L'.SgiConAbs (x', n1, k1) => found (x', n1, k1, NONE)
|
adamc@41
|
2884 | L'.SgiCon (x', n1, k1, c1) => found (x', n1, k1, SOME c1)
|
adamc@805
|
2885 | L'.SgiDatatype dts =>
|
adamc@191
|
2886 let
|
adamc@191
|
2887 val k = (L'.KType, loc)
|
adamc@805
|
2888
|
adamc@805
|
2889 fun search dts =
|
adamc@805
|
2890 case dts of
|
adamc@805
|
2891 [] => NONE
|
adamc@805
|
2892 | (x', n1, xs, _) :: dts =>
|
adamc@805
|
2893 let
|
adamc@805
|
2894 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@805
|
2895 in
|
adamc@805
|
2896 case found (x', n1, k', NONE) of
|
adamc@805
|
2897 NONE => search dts
|
adamc@805
|
2898 | x => x
|
adamc@805
|
2899 end
|
adamc@191
|
2900 in
|
adamc@805
|
2901 search dts
|
adamc@191
|
2902 end
|
adamc@191
|
2903 | L'.SgiDatatypeImp (x', n1, m1, ms, s, xs, _) =>
|
adamc@191
|
2904 let
|
adamc@191
|
2905 val k = (L'.KType, loc)
|
adamc@191
|
2906 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@191
|
2907 in
|
adamc@191
|
2908 found (x', n1, k', SOME (L'.CModProj (m1, ms, s), loc))
|
adamc@191
|
2909 end
|
adamc@711
|
2910 | L'.SgiClassAbs (x', n1, k) => found (x', n1, k, NONE)
|
adamc@711
|
2911 | L'.SgiClass (x', n1, k, c) => found (x', n1, k, SOME c)
|
adamc@31
|
2912 | _ => NONE
|
adamc@31
|
2913 end)
|
adamc@31
|
2914
|
adamc@31
|
2915 | L'.SgiCon (x, n2, k2, c2) =>
|
adamc@469
|
2916 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@211
|
2917 let
|
adamc@211
|
2918 fun found (x', n1, k1, c1) =
|
adamc@211
|
2919 if x = x' then
|
adamc@211
|
2920 let
|
adamc@838
|
2921 val c2 = sub2 c2
|
adamc@838
|
2922
|
adamc@327
|
2923 fun good () =
|
adamc@327
|
2924 let
|
adamc@327
|
2925 val env = E.pushCNamedAs env x n2 k2 (SOME c2)
|
adamc@327
|
2926 val env = if n1 = n2 then
|
adamc@327
|
2927 env
|
adamc@327
|
2928 else
|
adamc@839
|
2929 (cparts (n2, n1);
|
adamc@839
|
2930 E.pushCNamedAs env x n1 k1 (SOME c1))
|
adamc@327
|
2931 in
|
adamc@628
|
2932 SOME env
|
adamc@327
|
2933 end
|
adamc@211
|
2934 in
|
adamc@987
|
2935 (unifyCons env loc c1 c2;
|
adamc@628
|
2936 good ())
|
adamc@211
|
2937 handle CUnify (c1, c2, err) =>
|
adamc@1000
|
2938 (sgnError env (SgiWrongCon (strLoc, sgi1All, c1,
|
adamc@1000
|
2939 sgi2All, c2, err));
|
adamc@211
|
2940 good ())
|
adamc@211
|
2941 end
|
adamc@211
|
2942 else
|
adamc@211
|
2943 NONE
|
adamc@211
|
2944 in
|
adamc@211
|
2945 case sgi1 of
|
adamc@211
|
2946 L'.SgiCon (x', n1, k1, c1) => found (x', n1, k1, c1)
|
adamc@711
|
2947 | L'.SgiClass (x', n1, k1, c1) => found (x', n1, k1, c1)
|
adamc@211
|
2948 | _ => NONE
|
adamc@211
|
2949 end)
|
adamc@31
|
2950
|
adamc@805
|
2951 | L'.SgiDatatype dts2 =>
|
adamc@805
|
2952 let
|
adamc@805
|
2953 fun found' (sgi1All, (x1, n1, xs1, xncs1), (x2, n2, xs2, xncs2), env) =
|
adamc@805
|
2954 if x1 <> x2 then
|
adamc@805
|
2955 NONE
|
adamc@805
|
2956 else
|
adamc@805
|
2957 let
|
adamc@805
|
2958 fun mismatched ue =
|
adamc@1000
|
2959 (sgnError env (SgiMismatchedDatatypes (strLoc, sgi1All, sgi2All, ue));
|
adamc@805
|
2960 SOME env)
|
adamc@805
|
2961
|
adamc@805
|
2962 val k = (L'.KType, loc)
|
adamc@805
|
2963 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs1
|
adamc@805
|
2964
|
adamc@805
|
2965 fun good () =
|
adamc@805
|
2966 let
|
adamc@805
|
2967 val env = E.sgiBinds env sgi1All
|
adamc@805
|
2968 val env = if n1 = n2 then
|
adamc@805
|
2969 env
|
adamc@805
|
2970 else
|
adamc@838
|
2971 (cparts (n2, n1);
|
adamc@838
|
2972 E.pushCNamedAs env x1 n2 k'
|
adamc@838
|
2973 (SOME (L'.CNamed n1, loc)))
|
adamc@805
|
2974 in
|
adamc@805
|
2975 SOME env
|
adamc@805
|
2976 end
|
adamc@805
|
2977
|
adamc@805
|
2978 val env = E.pushCNamedAs env x1 n1 k' NONE
|
adamc@805
|
2979 val env = if n1 = n2 then
|
adamc@805
|
2980 env
|
adamc@805
|
2981 else
|
adamc@838
|
2982 (cparts (n2, n1);
|
adamc@838
|
2983 E.pushCNamedAs env x1 n2 k' (SOME (L'.CNamed n1, loc)))
|
adamc@805
|
2984 val env = foldl (fn (x, env) => E.pushCRel env x k) env xs1
|
adamc@805
|
2985 fun xncBad ((x1, _, t1), (x2, _, t2)) =
|
adamc@805
|
2986 String.compare (x1, x2) <> EQUAL
|
adamc@805
|
2987 orelse case (t1, t2) of
|
adamc@805
|
2988 (NONE, NONE) => false
|
adamc@805
|
2989 | (SOME t1, SOME t2) =>
|
adamc@987
|
2990 (unifyCons env loc t1 (sub2 t2); false)
|
adamc@805
|
2991 | _ => true
|
adamc@805
|
2992 in
|
adamc@805
|
2993 (if xs1 <> xs2
|
adamc@805
|
2994 orelse length xncs1 <> length xncs2
|
adamc@805
|
2995 orelse ListPair.exists xncBad (xncs1, xncs2) then
|
adamc@805
|
2996 mismatched NONE
|
adamc@160
|
2997 else
|
adamc@805
|
2998 good ())
|
adamc@805
|
2999 handle CUnify ue => mismatched (SOME ue)
|
adamc@805
|
3000 end
|
adamc@805
|
3001 in
|
adamc@805
|
3002 seek'
|
adamc@805
|
3003 (fn _ =>
|
adamc@805
|
3004 let
|
adamc@805
|
3005 fun seekOne (dt2, env) =
|
adamc@805
|
3006 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@805
|
3007 case sgi1 of
|
adamc@805
|
3008 L'.SgiDatatypeImp (x', n1, _, _, _, xs, xncs1) =>
|
adamc@805
|
3009 found' (sgi1All, (x', n1, xs, xncs1), dt2, env)
|
adamc@805
|
3010 | _ => NONE)
|
adamc@805
|
3011
|
adamc@805
|
3012 fun seekAll (dts, env) =
|
adamc@805
|
3013 case dts of
|
adamc@805
|
3014 [] => env
|
adamc@805
|
3015 | dt :: dts => seekAll (dts, seekOne (dt, env))
|
adamc@805
|
3016 in
|
adamc@805
|
3017 seekAll (dts2, env)
|
adamc@805
|
3018 end)
|
adamc@805
|
3019 (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@805
|
3020 let
|
adamc@805
|
3021 fun found dts1 =
|
adamc@805
|
3022 let
|
adamc@805
|
3023 fun iter (dts1, dts2, env) =
|
adamc@805
|
3024 case (dts1, dts2) of
|
adamc@805
|
3025 ([], []) => SOME env
|
adamc@805
|
3026 | (dt1 :: dts1, dt2 :: dts2) =>
|
adamc@805
|
3027 (case found' (sgi1All, dt1, dt2, env) of
|
adamc@805
|
3028 NONE => NONE
|
adamc@805
|
3029 | SOME env => iter (dts1, dts2, env))
|
adamc@805
|
3030 | _ => NONE
|
adamc@805
|
3031 in
|
adamc@805
|
3032 iter (dts1, dts2, env)
|
adamc@805
|
3033 end
|
adamc@805
|
3034 in
|
adamc@805
|
3035 case sgi1 of
|
adamc@805
|
3036 L'.SgiDatatype dts1 => found dts1
|
adamc@805
|
3037 | _ => NONE
|
adamc@805
|
3038 end)
|
adamc@805
|
3039 end
|
adamc@156
|
3040
|
adamc@191
|
3041 | L'.SgiDatatypeImp (x, n2, m12, ms2, s2, xs, _) =>
|
adamc@469
|
3042 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@158
|
3043 case sgi1 of
|
adamc@191
|
3044 L'.SgiDatatypeImp (x', n1, m11, ms1, s1, _, _) =>
|
adamc@158
|
3045 if x = x' then
|
adamc@158
|
3046 let
|
adamc@158
|
3047 val k = (L'.KType, loc)
|
adamc@191
|
3048 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@158
|
3049 val t1 = (L'.CModProj (m11, ms1, s1), loc)
|
adamc@158
|
3050 val t2 = (L'.CModProj (m12, ms2, s2), loc)
|
adamc@158
|
3051
|
adamc@158
|
3052 fun good () =
|
adamc@158
|
3053 let
|
adamc@191
|
3054 val env = E.pushCNamedAs env x n1 k' (SOME t1)
|
adamc@191
|
3055 val env = E.pushCNamedAs env x n2 k' (SOME t2)
|
adamc@158
|
3056 in
|
adamc@838
|
3057 cparts (n2, n1);
|
adamc@628
|
3058 SOME env
|
adamc@158
|
3059 end
|
adamc@158
|
3060 in
|
adamc@987
|
3061 (unifyCons env loc t1 t2;
|
adamc@628
|
3062 good ())
|
adamc@158
|
3063 handle CUnify (c1, c2, err) =>
|
adamc@1000
|
3064 (sgnError env (SgiWrongCon (strLoc, sgi1All, c1, sgi2All, c2, err));
|
adamc@158
|
3065 good ())
|
adamc@158
|
3066 end
|
adamc@158
|
3067 else
|
adamc@158
|
3068 NONE
|
adamc@158
|
3069
|
adamc@158
|
3070 | _ => NONE)
|
adamc@156
|
3071
|
adamc@32
|
3072 | L'.SgiVal (x, n2, c2) =>
|
adamc@469
|
3073 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@32
|
3074 case sgi1 of
|
adamc@41
|
3075 L'.SgiVal (x', n1, c1) =>
|
adamc@41
|
3076 if x = x' then
|
adamc@838
|
3077 ((*prefaces "val" [("x", PD.string x),
|
adamc@838
|
3078 ("n1", PD.string (Int.toString n1)),
|
adamc@838
|
3079 ("c1", p_con env c1),
|
adamc@838
|
3080 ("c2", p_con env c2),
|
adamc@838
|
3081 ("c2'", p_con env (sub2 c2))];*)
|
adamc@987
|
3082 unifyCons env loc c1 (sub2 c2);
|
adamc@628
|
3083 SOME env)
|
adamc@86
|
3084 handle CUnify (c1, c2, err) =>
|
adamc@1000
|
3085 (sgnError env (SgiWrongCon (strLoc, sgi1All, c1, sgi2All, c2, err));
|
adamc@628
|
3086 SOME env)
|
adamc@41
|
3087 else
|
adamc@41
|
3088 NONE
|
adamc@32
|
3089 | _ => NONE)
|
adamc@32
|
3090
|
adamc@33
|
3091 | L'.SgiStr (x, n2, sgn2) =>
|
adamc@469
|
3092 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@33
|
3093 case sgi1 of
|
adamc@41
|
3094 L'.SgiStr (x', n1, sgn1) =>
|
adamc@41
|
3095 if x = x' then
|
adamc@66
|
3096 let
|
adamc@1000
|
3097 val () = subSgn' counterparts env strLoc sgn1 sgn2
|
adamc@66
|
3098 val env = E.pushStrNamedAs env x n1 sgn1
|
adamc@66
|
3099 val env = if n1 = n2 then
|
adamc@66
|
3100 env
|
adamc@66
|
3101 else
|
adamc@66
|
3102 E.pushStrNamedAs env x n2
|
adamc@66
|
3103 (selfifyAt env {str = (L'.StrVar n1, #2 sgn2),
|
adamc@66
|
3104 sgn = sgn2})
|
adamc@66
|
3105 in
|
adamc@628
|
3106 SOME env
|
adamc@66
|
3107 end
|
adamc@41
|
3108 else
|
adamc@41
|
3109 NONE
|
adamc@33
|
3110 | _ => NONE)
|
adamc@59
|
3111
|
adamc@59
|
3112 | L'.SgiSgn (x, n2, sgn2) =>
|
adamc@469
|
3113 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@59
|
3114 case sgi1 of
|
adamc@59
|
3115 L'.SgiSgn (x', n1, sgn1) =>
|
adamc@59
|
3116 if x = x' then
|
adamc@65
|
3117 let
|
adamc@1000
|
3118 val () = subSgn' counterparts env strLoc sgn1 sgn2
|
adamc@1000
|
3119 val () = subSgn' counterparts env strLoc sgn2 sgn1
|
adamc@65
|
3120
|
adamc@65
|
3121 val env = E.pushSgnNamedAs env x n2 sgn2
|
adamc@65
|
3122 val env = if n1 = n2 then
|
adamc@65
|
3123 env
|
adamc@65
|
3124 else
|
adamc@838
|
3125 (cparts (n2, n1);
|
adamc@838
|
3126 E.pushSgnNamedAs env x n1 sgn2)
|
adamc@65
|
3127 in
|
adamc@628
|
3128 SOME env
|
adamc@65
|
3129 end
|
adamc@59
|
3130 else
|
adamc@59
|
3131 NONE
|
adamc@59
|
3132 | _ => NONE)
|
adamc@88
|
3133
|
adamc@88
|
3134 | L'.SgiConstraint (c2, d2) =>
|
adamc@469
|
3135 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@88
|
3136 case sgi1 of
|
adamc@88
|
3137 L'.SgiConstraint (c1, d1) =>
|
adamc@987
|
3138 if consEq env loc (c1, c2)
|
adamc@987
|
3139 andalso consEq env loc (d1, d2) then
|
adamc@628
|
3140 SOME env
|
adamc@88
|
3141 else
|
adamc@88
|
3142 NONE
|
adamc@88
|
3143 | _ => NONE)
|
adamc@203
|
3144
|
adamc@563
|
3145 | L'.SgiClassAbs (x, n2, k2) =>
|
adamc@469
|
3146 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@211
|
3147 let
|
adamc@563
|
3148 fun found (x', n1, k1, co) =
|
adamc@211
|
3149 if x = x' then
|
adamc@211
|
3150 let
|
adamc@623
|
3151 val () = unifyKinds env k1 k2
|
adamc@563
|
3152 handle KUnify (k1, k2, err) =>
|
adamc@1000
|
3153 sgnError env (SgiWrongKind (strLoc, sgi1All, k1,
|
adamc@1000
|
3154 sgi2All, k2, err))
|
adamc@563
|
3155
|
adamc@711
|
3156 val env = E.pushCNamedAs env x n1 k1 co
|
adamc@211
|
3157 in
|
adamc@211
|
3158 SOME (if n1 = n2 then
|
adamc@211
|
3159 env
|
adamc@211
|
3160 else
|
adamc@838
|
3161 (cparts (n2, n1);
|
adamc@838
|
3162 E.pushCNamedAs env x n2 k1 (SOME (L'.CNamed n1, loc2))))
|
adamc@211
|
3163 end
|
adamc@211
|
3164 else
|
adamc@211
|
3165 NONE
|
adamc@211
|
3166 in
|
adamc@211
|
3167 case sgi1 of
|
adamc@563
|
3168 L'.SgiClassAbs (x', n1, k1) => found (x', n1, k1, NONE)
|
adamc@563
|
3169 | L'.SgiClass (x', n1, k1, c) => found (x', n1, k1, SOME c)
|
adamc@211
|
3170 | _ => NONE
|
adamc@211
|
3171 end)
|
adamc@563
|
3172 | L'.SgiClass (x, n2, k2, c2) =>
|
adamc@469
|
3173 seek (fn (env, sgi1All as (sgi1, _)) =>
|
adamc@211
|
3174 let
|
adamc@563
|
3175 fun found (x', n1, k1, c1) =
|
adamc@211
|
3176 if x = x' then
|
adamc@211
|
3177 let
|
adamc@623
|
3178 val () = unifyKinds env k1 k2
|
adamc@563
|
3179 handle KUnify (k1, k2, err) =>
|
adamc@1000
|
3180 sgnError env (SgiWrongKind (strLoc, sgi1All, k1,
|
adamc@1000
|
3181 sgi2All, k2, err))
|
adamc@563
|
3182
|
adamc@838
|
3183 val c2 = sub2 c2
|
adamc@838
|
3184
|
adamc@218
|
3185 fun good () =
|
adamc@218
|
3186 let
|
adamc@711
|
3187 val env = E.pushCNamedAs env x n2 k2 (SOME c2)
|
adamc@218
|
3188 val env = if n1 = n2 then
|
adamc@218
|
3189 env
|
adamc@218
|
3190 else
|
adamc@839
|
3191 (cparts (n2, n1);
|
adamc@839
|
3192 E.pushCNamedAs env x n1 k2 (SOME c1))
|
adamc@218
|
3193 in
|
adamc@628
|
3194 SOME env
|
adamc@218
|
3195 end
|
adamc@211
|
3196 in
|
adamc@987
|
3197 (unifyCons env loc c1 c2;
|
adamc@628
|
3198 good ())
|
adamc@211
|
3199 handle CUnify (c1, c2, err) =>
|
adamc@1000
|
3200 (sgnError env (SgiWrongCon (strLoc, sgi1All, c1,
|
adamc@1000
|
3201 sgi2All, c2, err));
|
adamc@211
|
3202 good ())
|
adamc@211
|
3203 end
|
adamc@211
|
3204 else
|
adamc@211
|
3205 NONE
|
adamc@211
|
3206 in
|
adamc@211
|
3207 case sgi1 of
|
adamc@563
|
3208 L'.SgiClass (x', n1, k1, c1) => found (x', n1, k1, c1)
|
adamc@211
|
3209 | _ => NONE
|
adamc@211
|
3210 end)
|
adamc@31
|
3211 end
|
adamc@31
|
3212 in
|
adamc@628
|
3213 ignore (foldl folder env sgis2)
|
adamc@31
|
3214 end
|
adamc@31
|
3215
|
adamc@41
|
3216 | (L'.SgnFun (m1, n1, dom1, ran1), L'.SgnFun (m2, n2, dom2, ran2)) =>
|
adamc@43
|
3217 let
|
adamc@480
|
3218 val ran2 =
|
adamc@43
|
3219 if n1 = n2 then
|
adamc@480
|
3220 ran2
|
adamc@43
|
3221 else
|
adamc@480
|
3222 subStrInSgn (n2, n1) ran2
|
adamc@43
|
3223 in
|
adamc@1000
|
3224 subSgn' counterparts env strLoc dom2 dom1;
|
adamc@1000
|
3225 subSgn' counterparts (E.pushStrNamedAs env m1 n1 dom2) strLoc ran1 ran2
|
adamc@43
|
3226 end
|
adamc@41
|
3227
|
adamc@1000
|
3228 | _ => sgnError env (SgnWrongForm (strLoc, sgn1, sgn2)))
|
adamc@41
|
3229
|
adamc@838
|
3230 and subSgn env = subSgn' (ref IM.empty) env
|
adamc@61
|
3231
|
adamc@706
|
3232 and positive self =
|
adamc@312
|
3233 let
|
adamc@312
|
3234 open L
|
adamc@312
|
3235
|
adamc@312
|
3236 fun none (c, _) =
|
adamc@312
|
3237 case c of
|
adamc@312
|
3238 CAnnot (c, _) => none c
|
adamc@312
|
3239
|
adamc@312
|
3240 | TFun (c1, c2) => none c1 andalso none c2
|
adamc@312
|
3241 | TCFun (_, _, _, c) => none c
|
adamc@312
|
3242 | TRecord c => none c
|
adamc@312
|
3243
|
adamc@312
|
3244 | CVar ([], x) => x <> self
|
adamc@312
|
3245 | CVar _ => true
|
adamc@312
|
3246 | CApp (c1, c2) => none c1 andalso none c2
|
adamc@312
|
3247 | CAbs _ => false
|
adamc@628
|
3248 | TDisjoint (c1, c2, c3) => none c1 andalso none c2 andalso none c3
|
adamc@312
|
3249
|
adamc@623
|
3250 | CKAbs _ => false
|
adamc@623
|
3251 | TKFun _ => false
|
adamc@623
|
3252
|
adamc@312
|
3253 | CName _ => true
|
adamc@312
|
3254
|
adamc@312
|
3255 | CRecord xcs => List.all (fn (c1, c2) => none c1 andalso none c2) xcs
|
adamc@312
|
3256 | CConcat (c1, c2) => none c1 andalso none c2
|
adamc@621
|
3257 | CMap => true
|
adamc@312
|
3258
|
adamc@312
|
3259 | CUnit => true
|
adamc@312
|
3260
|
adamc@312
|
3261 | CTuple cs => List.all none cs
|
adamc@312
|
3262 | CProj (c, _) => none c
|
adamc@312
|
3263
|
adamc@312
|
3264 | CWild _ => false
|
adamc@312
|
3265
|
adamc@312
|
3266 fun pos (c, _) =
|
adamc@312
|
3267 case c of
|
adamc@312
|
3268 CAnnot (c, _) => pos c
|
adamc@312
|
3269
|
adamc@312
|
3270 | TFun (c1, c2) => none c1 andalso pos c2
|
adamc@312
|
3271 | TCFun (_, _, _, c) => pos c
|
adamc@312
|
3272 | TRecord c => pos c
|
adamc@312
|
3273
|
adamc@312
|
3274 | CVar _ => true
|
adamc@312
|
3275 | CApp (c1, c2) => pos c1 andalso none c2
|
adamc@312
|
3276 | CAbs _ => false
|
adamc@628
|
3277 | TDisjoint (c1, c2, c3) => none c1 andalso none c2 andalso none c3
|
adamc@312
|
3278
|
adamc@623
|
3279 | CKAbs _ => false
|
adamc@623
|
3280 | TKFun _ => false
|
adamc@623
|
3281
|
adamc@312
|
3282 | CName _ => true
|
adamc@312
|
3283
|
adamc@312
|
3284 | CRecord xcs => List.all (fn (c1, c2) => none c1 andalso pos c2) xcs
|
adamc@312
|
3285 | CConcat (c1, c2) => pos c1 andalso pos c2
|
adamc@621
|
3286 | CMap => true
|
adamc@312
|
3287
|
adamc@312
|
3288 | CUnit => true
|
adamc@312
|
3289
|
adamc@312
|
3290 | CTuple cs => List.all pos cs
|
adamc@312
|
3291 | CProj (c, _) => pos c
|
adamc@312
|
3292
|
adamc@312
|
3293 | CWild _ => false
|
adamc@312
|
3294 in
|
adamc@312
|
3295 pos
|
adamc@312
|
3296 end
|
adamc@312
|
3297
|
adamc@706
|
3298 and wildifyStr env (str, sgn) =
|
adamc@325
|
3299 case #1 (hnormSgn env sgn) of
|
adamc@325
|
3300 L'.SgnConst sgis =>
|
adamc@325
|
3301 (case #1 str of
|
adamc@325
|
3302 L.StrConst ds =>
|
adamc@325
|
3303 let
|
adamc@1270
|
3304 fun cname d =
|
adamc@1270
|
3305 case d of
|
adamc@1270
|
3306 L'.SgiCon (x, _, _, _) => SOME x
|
adamc@1270
|
3307 | L'.SgiConAbs (x, _, _) => SOME x
|
adamc@1270
|
3308 | L'.SgiClass (x, _, _, _) => SOME x
|
adamc@1270
|
3309 | L'.SgiClassAbs (x, _, _) => SOME x
|
adamc@1270
|
3310 | _ => NONE
|
adamc@1270
|
3311
|
adamc@1270
|
3312 fun dname (d, _) =
|
adamc@1270
|
3313 case d of
|
adamc@1270
|
3314 L.DCon (x, _, _) => SOME x
|
adamc@1270
|
3315 | L.DClass (x, _, _) => SOME x
|
adamc@1270
|
3316 | _ => NONE
|
adamc@1270
|
3317
|
adamc@493
|
3318 fun decompileKind (k, loc) =
|
adamc@493
|
3319 case k of
|
adamc@493
|
3320 L'.KType => SOME (L.KType, loc)
|
adamc@493
|
3321 | L'.KArrow (k1, k2) =>
|
adamc@493
|
3322 (case (decompileKind k1, decompileKind k2) of
|
adamc@493
|
3323 (SOME k1, SOME k2) => SOME (L.KArrow (k1, k2), loc)
|
adamc@493
|
3324 | _ => NONE)
|
adamc@493
|
3325 | L'.KName => SOME (L.KName, loc)
|
adamc@493
|
3326 | L'.KRecord k =>
|
adamc@493
|
3327 (case decompileKind k of
|
adamc@493
|
3328 SOME k => SOME (L.KRecord k, loc)
|
adamc@493
|
3329 | _ => NONE)
|
adamc@493
|
3330 | L'.KUnit => SOME (L.KUnit, loc)
|
adamc@493
|
3331 | L'.KTuple ks =>
|
adamc@493
|
3332 let
|
adamc@493
|
3333 val ks' = List.mapPartial decompileKind ks
|
adamc@493
|
3334 in
|
adamc@493
|
3335 if length ks' = length ks then
|
adamc@493
|
3336 SOME (L.KTuple ks', loc)
|
adamc@493
|
3337 else
|
adamc@493
|
3338 NONE
|
adamc@493
|
3339 end
|
adamc@493
|
3340
|
adamc@493
|
3341 | L'.KError => NONE
|
adamc@493
|
3342 | L'.KUnif (_, _, ref (SOME k)) => decompileKind k
|
adamc@493
|
3343 | L'.KUnif _ => NONE
|
adam@1302
|
3344 | L'.KTupleUnif (_, _, ref (SOME k)) => decompileKind k
|
adam@1302
|
3345 | L'.KTupleUnif _ => NONE
|
adamc@493
|
3346
|
adamc@623
|
3347 | L'.KRel _ => NONE
|
adamc@623
|
3348 | L'.KFun _ => NONE
|
adamc@623
|
3349
|
adamc@325
|
3350 fun decompileCon env (c, loc) =
|
adamc@325
|
3351 case c of
|
adamc@325
|
3352 L'.CRel i =>
|
adamc@325
|
3353 let
|
adamc@325
|
3354 val (s, _) = E.lookupCRel env i
|
adamc@325
|
3355 in
|
adamc@325
|
3356 SOME (L.CVar ([], s), loc)
|
adamc@325
|
3357 end
|
adamc@325
|
3358 | L'.CNamed i =>
|
adamc@325
|
3359 let
|
adamc@325
|
3360 val (s, _, _) = E.lookupCNamed env i
|
adamc@325
|
3361 in
|
adamc@325
|
3362 SOME (L.CVar ([], s), loc)
|
adamc@325
|
3363 end
|
adamc@325
|
3364 | L'.CModProj (m1, ms, x) =>
|
adamc@325
|
3365 let
|
adamc@325
|
3366 val (s, _) = E.lookupStrNamed env m1
|
adamc@325
|
3367 in
|
adamc@325
|
3368 SOME (L.CVar (s :: ms, x), loc)
|
adamc@325
|
3369 end
|
adamc@325
|
3370 | L'.CName s => SOME (L.CName s, loc)
|
adamc@325
|
3371 | L'.CRecord (_, xcs) =>
|
adamc@325
|
3372 let
|
adamc@325
|
3373 fun fields xcs =
|
adamc@325
|
3374 case xcs of
|
adamc@325
|
3375 [] => SOME []
|
adamc@325
|
3376 | (x, t) :: xcs =>
|
adamc@325
|
3377 case (decompileCon env x, decompileCon env t, fields xcs) of
|
adamc@325
|
3378 (SOME x, SOME t, SOME xcs) => SOME ((x, t) :: xcs)
|
adamc@325
|
3379 | _ => NONE
|
adamc@325
|
3380 in
|
adamc@325
|
3381 Option.map (fn xcs => (L.CRecord xcs, loc))
|
adamc@325
|
3382 (fields xcs)
|
adamc@325
|
3383 end
|
adamc@325
|
3384 | L'.CConcat (c1, c2) =>
|
adamc@325
|
3385 (case (decompileCon env c1, decompileCon env c2) of
|
adamc@325
|
3386 (SOME c1, SOME c2) => SOME (L.CConcat (c1, c2), loc)
|
adamc@325
|
3387 | _ => NONE)
|
adamc@325
|
3388 | L'.CUnit => SOME (L.CUnit, loc)
|
adam@1303
|
3389 | L'.CUnif (nl, _, _, _, ref (SOME c)) => decompileCon env (E.mliftConInCon nl c)
|
adamc@325
|
3390
|
adamc@325
|
3391 | _ => NONE
|
adamc@325
|
3392
|
adamc@1264
|
3393 fun buildNeeded env sgis =
|
adamc@1275
|
3394 #1 (foldl (fn ((sgi, loc), (nd, env')) =>
|
adamc@1264
|
3395 (case sgi of
|
adamc@1275
|
3396 L'.SgiCon (x, _, k, c) => naddCon (nd, x, (k, SOME c))
|
adamc@1275
|
3397 | L'.SgiConAbs (x, _, k) => naddCon (nd, x, (k, NONE))
|
adamc@1264
|
3398 | L'.SgiConstraint cs => naddConstraint (nd, (env', cs, loc))
|
adamc@1264
|
3399 | L'.SgiVal (x, _, t) =>
|
adamc@1264
|
3400 let
|
adamc@1277
|
3401 fun should t =
|
adamc@1277
|
3402 let
|
adamc@1277
|
3403 val t = normClassConstraint env' t
|
adamc@1277
|
3404 in
|
adamc@1277
|
3405 case #1 t of
|
adamc@1277
|
3406 L'.CApp (f, _) => isClassOrFolder env' f
|
adamc@1277
|
3407 | L'.TRecord t =>
|
adamc@1277
|
3408 (case hnormCon env' t of
|
adamc@1277
|
3409 (L'.CApp (f, _), _) =>
|
adamc@1277
|
3410 (case hnormCon env' f of
|
adamc@1277
|
3411 (L'.CApp (f, cl), loc) =>
|
adamc@1277
|
3412 (case hnormCon env' f of
|
adamc@1277
|
3413 (L'.CMap _, _) => isClassOrFolder env' cl
|
adamc@1277
|
3414 | _ => false)
|
adamc@1277
|
3415 | _ => false)
|
adamc@1277
|
3416 | _ => false)
|
adamc@1277
|
3417 | _ => false
|
adamc@1277
|
3418 end
|
adamc@1270
|
3419 in
|
adamc@1277
|
3420 if should t then
|
adamc@1277
|
3421 naddVal (nd, x)
|
adamc@1277
|
3422 else
|
adamc@1277
|
3423 nd
|
adamc@1264
|
3424 end
|
adamc@1264
|
3425 | L'.SgiStr (x, _, s) =>
|
adamc@1270
|
3426 (case #1 (hnormSgn env' s) of
|
adamc@1270
|
3427 L'.SgnConst sgis' => naddMod (nd, x, (env', buildNeeded env' sgis'))
|
adamc@1264
|
3428 | _ => nd)
|
adamc@1264
|
3429 | _ => nd,
|
adamc@1275
|
3430 E.sgiBinds env' (sgi, loc)))
|
adamc@1275
|
3431 (nempty, env) sgis)
|
adamc@1264
|
3432
|
adamc@1264
|
3433 val nd = buildNeeded env sgis
|
adamc@1264
|
3434
|
adamc@1264
|
3435 fun removeUsed (nd, ds) =
|
adamc@1264
|
3436 foldl (fn ((d, _), nd) =>
|
adamc@634
|
3437 case d of
|
adamc@1264
|
3438 L.DCon (x, _, _) => ndelCon (nd, x)
|
adamc@1264
|
3439 | L.DClass (x, _, _) => ndelCon (nd, x)
|
adamc@1264
|
3440 | L.DVal (x, _, _) => ndelVal (nd, x)
|
adamc@1264
|
3441 | L.DOpen _ => nempty
|
adamc@1264
|
3442 | L.DStr (x, _, (L.StrConst ds', _)) =>
|
adamc@1264
|
3443 (case SM.find (nmods nd, x) of
|
adamc@1264
|
3444 NONE => nd
|
adamc@1270
|
3445 | SOME (env, nd') => naddMod (nd, x, (env, removeUsed (nd', ds'))))
|
adamc@1264
|
3446 | _ => nd)
|
adamc@1264
|
3447 nd ds
|
adamc@1264
|
3448
|
adamc@1264
|
3449 val nd = removeUsed (nd, ds)
|
adamc@1264
|
3450
|
adamc@1270
|
3451 fun extend (env, nd, ds) =
|
adamc@1264
|
3452 let
|
adamc@1264
|
3453 val ds' = List.mapPartial (fn (env', (c1, c2), loc) =>
|
adamc@1264
|
3454 case (decompileCon env' c1, decompileCon env' c2) of
|
adamc@1264
|
3455 (SOME c1, SOME c2) =>
|
adamc@1264
|
3456 SOME (L.DConstraint (c1, c2), loc)
|
adamc@1264
|
3457 | _ => NONE) (nconstraints nd)
|
adamc@1264
|
3458
|
adamc@1264
|
3459 val ds' =
|
adamc@1264
|
3460 case SS.listItems (nvals nd) of
|
adamc@1264
|
3461 [] => ds'
|
adamc@1264
|
3462 | xs =>
|
adamc@1264
|
3463 let
|
adamc@1264
|
3464 val ewild = (L.EWild, #2 str)
|
adamc@1264
|
3465 val ds'' = map (fn x => (L.DVal (x, NONE, ewild), #2 str)) xs
|
adamc@1264
|
3466 in
|
adamc@1264
|
3467 ds'' @ ds'
|
adamc@1264
|
3468 end
|
adamc@1264
|
3469
|
adamc@1275
|
3470 val ds' =
|
adamc@1264
|
3471 case SM.listItemsi (ncons nd) of
|
adamc@1275
|
3472 [] => ds'
|
adamc@1264
|
3473 | xs =>
|
adamc@1275
|
3474 map (fn (x, (k, co)) =>
|
adamc@1270
|
3475 let
|
adamc@1270
|
3476 val k =
|
adamc@1270
|
3477 case decompileKind k of
|
adamc@1270
|
3478 NONE => (L.KWild, #2 str)
|
adamc@1270
|
3479 | SOME k => k
|
adamc@1275
|
3480
|
adamc@1270
|
3481 val cwild = (L.CWild k, #2 str)
|
adamc@1270
|
3482 val c =
|
adamc@1270
|
3483 case co of
|
adamc@1270
|
3484 NONE => cwild
|
adamc@1270
|
3485 | SOME c =>
|
adamc@1270
|
3486 case decompileCon env c of
|
adamc@1270
|
3487 NONE => cwild
|
adamc@1270
|
3488 | SOME c' => c'
|
adamc@1270
|
3489 in
|
adamc@1275
|
3490 (L.DCon (x, NONE, c), #2 str)
|
adamc@1275
|
3491 end) xs @ ds'
|
adamc@1275
|
3492
|
adamc@1275
|
3493 val ds = ds @ ds'
|
adamc@1264
|
3494 in
|
adamc@1270
|
3495 map (fn d as (L.DStr (x, s, (L.StrConst ds', loc')), loc) =>
|
adamc@1270
|
3496 (case SM.find (nmods nd, x) of
|
adamc@1270
|
3497 NONE => d
|
adamc@1270
|
3498 | SOME (env, nd') =>
|
adamc@1270
|
3499 (L.DStr (x, s, (L.StrConst (extend (env, nd', ds')), loc')), loc))
|
adamc@1270
|
3500 | d => d) ds
|
adamc@1264
|
3501 end
|
adamc@325
|
3502 in
|
adamc@1270
|
3503 (L.StrConst (extend (env, nd, ds)), #2 str)
|
adamc@325
|
3504 end
|
adamc@325
|
3505 | _ => str)
|
adamc@325
|
3506 | _ => str
|
adamc@325
|
3507
|
adamc@706
|
3508 and elabDecl (dAll as (d, loc), (env, denv, gs)) =
|
adamc@255
|
3509 let
|
adamc@904
|
3510 (*val () = preface ("elabDecl", SourcePrint.p_decl dAll)*)
|
adamc@514
|
3511 (*val befor = Time.now ()*)
|
adamc@255
|
3512
|
adamc@255
|
3513 val r =
|
adamc@255
|
3514 case d of
|
adamc@255
|
3515 L.DCon (x, ko, c) =>
|
adamc@255
|
3516 let
|
adamc@255
|
3517 val k' = case ko of
|
adamc@255
|
3518 NONE => kunif loc
|
adamc@623
|
3519 | SOME k => elabKind env k
|
adamc@255
|
3520
|
adamc@255
|
3521 val (c', ck, gs') = elabCon (env, denv) c
|
adamc@255
|
3522 val (env', n) = E.pushCNamed env x k' (SOME c')
|
adamc@255
|
3523 in
|
adamc@255
|
3524 checkKind env c' ck k';
|
adamc@255
|
3525
|
adamc@255
|
3526 ([(L'.DCon (x, n, k', c'), loc)], (env', denv, enD gs' @ gs))
|
adamc@255
|
3527 end
|
adamc@805
|
3528 | L.DDatatype dts =>
|
adamc@255
|
3529 let
|
adamc@255
|
3530 val k = (L'.KType, loc)
|
adamc@805
|
3531
|
adamc@805
|
3532 val (dts, env) = ListUtil.foldlMap
|
adamc@805
|
3533 (fn ((x, xs, xcs), env) =>
|
adamc@805
|
3534 let
|
adamc@805
|
3535 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@805
|
3536 val (env, n) = E.pushCNamed env x k' NONE
|
adamc@805
|
3537 in
|
adamc@805
|
3538 ((x, n, xs, xcs), env)
|
adamc@805
|
3539 end)
|
adamc@805
|
3540 env dts
|
adamc@805
|
3541
|
adamc@805
|
3542 val (dts, (env, gs')) = ListUtil.foldlMap
|
adamc@805
|
3543 (fn ((x, n, xs, xcs), (env, gs')) =>
|
adamc@805
|
3544 let
|
adamc@805
|
3545 val t = (L'.CNamed n, loc)
|
adamc@805
|
3546 val nxs = length xs - 1
|
adamc@805
|
3547 val t = ListUtil.foldli
|
adamc@805
|
3548 (fn (i, _, t) =>
|
adamc@805
|
3549 (L'.CApp (t, (L'.CRel (nxs - i), loc)), loc)) t xs
|
adamc@805
|
3550
|
adamc@805
|
3551 val (env', denv') = foldl (fn (x, (env', denv')) =>
|
adamc@805
|
3552 (E.pushCRel env' x k,
|
adamc@805
|
3553 D.enter denv')) (env, denv) xs
|
adamc@805
|
3554
|
adamc@805
|
3555 val (xcs, (used, env, gs')) =
|
adamc@805
|
3556 ListUtil.foldlMap
|
adamc@805
|
3557 (fn ((x, to), (used, env, gs)) =>
|
adamc@805
|
3558 let
|
adamc@805
|
3559 val (to, t, gs') = case to of
|
adamc@805
|
3560 NONE => (NONE, t, gs)
|
adamc@805
|
3561 | SOME t' =>
|
adamc@805
|
3562 let
|
adamc@805
|
3563 val (t', tk, gs') = elabCon (env', denv') t'
|
adamc@805
|
3564 in
|
adamc@805
|
3565 checkKind env' t' tk k;
|
adamc@805
|
3566 (SOME t', (L'.TFun (t', t), loc), enD gs' @ gs)
|
adamc@805
|
3567 end
|
adamc@805
|
3568 val t = foldr (fn (x, t) => (L'.TCFun (L'.Implicit, x, k, t), loc)) t xs
|
adamc@805
|
3569
|
adamc@805
|
3570 val (env, n') = E.pushENamed env x t
|
adamc@805
|
3571 in
|
adamc@805
|
3572 if SS.member (used, x) then
|
adamc@805
|
3573 strError env (DuplicateConstructor (x, loc))
|
adamc@805
|
3574 else
|
adamc@805
|
3575 ();
|
adamc@805
|
3576 ((x, n', to), (SS.add (used, x), env, gs'))
|
adamc@805
|
3577 end)
|
adamc@805
|
3578 (SS.empty, env, gs') xcs
|
adamc@805
|
3579 in
|
adamc@805
|
3580 ((x, n, xs, xcs), (E.pushDatatype env n xs xcs, gs'))
|
adamc@805
|
3581 end)
|
adamc@805
|
3582 (env, []) dts
|
adamc@255
|
3583 in
|
adamc@805
|
3584 ([(L'.DDatatype dts, loc)], (env, denv, gs' @ gs))
|
adamc@255
|
3585 end
|
adamc@255
|
3586
|
adamc@255
|
3587 | L.DDatatypeImp (_, [], _) => raise Fail "Empty DDatatypeImp"
|
adamc@255
|
3588
|
adamc@255
|
3589 | L.DDatatypeImp (x, m1 :: ms, s) =>
|
adamc@255
|
3590 (case E.lookupStr env m1 of
|
adamc@255
|
3591 NONE => (expError env (UnboundStrInExp (loc, m1));
|
adamc@255
|
3592 ([], (env, denv, gs)))
|
adamc@255
|
3593 | SOME (n, sgn) =>
|
adamc@255
|
3594 let
|
adamc@255
|
3595 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@255
|
3596 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adamc@255
|
3597 NONE => (conError env (UnboundStrInCon (loc, m));
|
adamc@255
|
3598 (strerror, sgnerror))
|
adamc@255
|
3599 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@255
|
3600 ((L'.StrVar n, loc), sgn) ms
|
adamc@255
|
3601 in
|
adamc@628
|
3602 case hnormCon env (L'.CModProj (n, ms, s), loc) of
|
adamc@628
|
3603 (L'.CModProj (n, ms, s), _) =>
|
adamc@255
|
3604 (case E.projectDatatype env {sgn = sgn, str = str, field = s} of
|
adamc@255
|
3605 NONE => (conError env (UnboundDatatype (loc, s));
|
adamc@255
|
3606 ([], (env, denv, gs)))
|
adamc@255
|
3607 | SOME (xs, xncs) =>
|
adamc@255
|
3608 let
|
adamc@255
|
3609 val k = (L'.KType, loc)
|
adamc@255
|
3610 val k' = foldl (fn (_, k') => (L'.KArrow (k, k'), loc)) k xs
|
adamc@255
|
3611 val t = (L'.CModProj (n, ms, s), loc)
|
adamc@255
|
3612 val (env, n') = E.pushCNamed env x k' (SOME t)
|
adamc@255
|
3613 val env = E.pushDatatype env n' xs xncs
|
adamc@255
|
3614
|
adamc@255
|
3615 val t = (L'.CNamed n', loc)
|
adamc@844
|
3616 val nxs = length xs
|
adamc@844
|
3617 val t = ListUtil.foldli (fn (i, _, t) =>
|
adamc@844
|
3618 (L'.CApp (t, (L'.CRel (nxs - 1 - i), loc)), loc))
|
adamc@844
|
3619 t xs
|
adamc@255
|
3620 val env = foldl (fn ((x, n, to), env) =>
|
adamc@255
|
3621 let
|
adamc@255
|
3622 val t = case to of
|
adamc@255
|
3623 NONE => t
|
adamc@255
|
3624 | SOME t' => (L'.TFun (t', t), loc)
|
adamc@255
|
3625
|
adamc@255
|
3626 val t = foldr (fn (x, t) =>
|
adamc@255
|
3627 (L'.TCFun (L'.Implicit, x, k, t), loc))
|
adamc@255
|
3628 t xs
|
adamc@255
|
3629 in
|
adamc@255
|
3630 E.pushENamedAs env x n t
|
adamc@255
|
3631 end) env xncs
|
adamc@255
|
3632 in
|
adamc@628
|
3633 ([(L'.DDatatypeImp (x, n', n, ms, s, xs, xncs), loc)], (env, denv, gs))
|
adamc@255
|
3634 end)
|
adamc@255
|
3635 | _ => (strError env (NotDatatype loc);
|
adamc@255
|
3636 ([], (env, denv, [])))
|
adamc@255
|
3637 end)
|
adamc@255
|
3638
|
adamc@255
|
3639 | L.DVal (x, co, e) =>
|
adamc@255
|
3640 let
|
adamc@255
|
3641 val (c', _, gs1) = case co of
|
adamc@255
|
3642 NONE => (cunif (loc, ktype), ktype, [])
|
adamc@255
|
3643 | SOME c => elabCon (env, denv) c
|
adamc@255
|
3644
|
adamc@255
|
3645 val (e', et, gs2) = elabExp (env, denv) e
|
adamc@629
|
3646
|
adamc@629
|
3647 val () = checkCon env e' et c'
|
adamc@629
|
3648
|
adamc@674
|
3649 val c' = normClassConstraint env c'
|
adamc@255
|
3650 val (env', n) = E.pushENamed env x c'
|
adamc@255
|
3651 in
|
adamc@255
|
3652 (*prefaces "DVal" [("x", Print.PD.string x),
|
adamc@362
|
3653 ("c'", p_con env c')];*)
|
adamc@628
|
3654 ([(L'.DVal (x, n, c', e'), loc)], (env', denv, enD gs1 @ gs2 @ gs))
|
adamc@255
|
3655 end
|
adamc@255
|
3656 | L.DValRec vis =>
|
adamc@255
|
3657 let
|
adamc@255
|
3658 fun allowable (e, _) =
|
adamc@255
|
3659 case e of
|
adamc@255
|
3660 L.EAbs _ => true
|
adamc@255
|
3661 | L.ECAbs (_, _, _, e) => allowable e
|
adamc@623
|
3662 | L.EKAbs (_, e) => allowable e
|
adamc@255
|
3663 | L.EDisjoint (_, _, e) => allowable e
|
adamc@255
|
3664 | _ => false
|
adamc@255
|
3665
|
adamc@255
|
3666 val (vis, gs) = ListUtil.foldlMap
|
adamc@255
|
3667 (fn ((x, co, e), gs) =>
|
adamc@255
|
3668 let
|
adamc@255
|
3669 val (c', _, gs1) = case co of
|
adamc@255
|
3670 NONE => (cunif (loc, ktype), ktype, [])
|
adamc@255
|
3671 | SOME c => elabCon (env, denv) c
|
adamc@674
|
3672 val c' = normClassConstraint env c'
|
adamc@255
|
3673 in
|
adamc@255
|
3674 ((x, c', e), enD gs1 @ gs)
|
adamc@280
|
3675 end) gs vis
|
adamc@255
|
3676
|
adamc@255
|
3677 val (vis, env) = ListUtil.foldlMap (fn ((x, c', e), env) =>
|
adamc@255
|
3678 let
|
adamc@255
|
3679 val (env, n) = E.pushENamed env x c'
|
adamc@255
|
3680 in
|
adamc@255
|
3681 ((x, n, c', e), env)
|
adamc@255
|
3682 end) env vis
|
adamc@255
|
3683
|
adamc@255
|
3684 val (vis, gs) = ListUtil.foldlMap (fn ((x, n, c', e), gs) =>
|
adamc@255
|
3685 let
|
adamc@255
|
3686 val (e', et, gs1) = elabExp (env, denv) e
|
adamc@255
|
3687 in
|
adamc@628
|
3688 checkCon env e' et c';
|
adamc@255
|
3689 if allowable e then
|
adamc@255
|
3690 ()
|
adamc@255
|
3691 else
|
adamc@255
|
3692 expError env (IllegalRec (x, e'));
|
adamc@628
|
3693 ((x, n, c', e'), gs1 @ gs)
|
adamc@255
|
3694 end) gs vis
|
adamc@255
|
3695 in
|
adamc@255
|
3696 ([(L'.DValRec vis, loc)], (env, denv, gs))
|
adamc@255
|
3697 end
|
adamc@255
|
3698
|
adamc@255
|
3699 | L.DSgn (x, sgn) =>
|
adamc@255
|
3700 let
|
adamc@255
|
3701 val (sgn', gs') = elabSgn (env, denv) sgn
|
adamc@255
|
3702 val (env', n) = E.pushSgnNamed env x sgn'
|
adamc@255
|
3703 in
|
adamc@255
|
3704 ([(L'.DSgn (x, n, sgn'), loc)], (env', denv, enD gs' @ gs))
|
adamc@255
|
3705 end
|
adamc@255
|
3706
|
adamc@255
|
3707 | L.DStr (x, sgno, str) =>
|
adamc@255
|
3708 let
|
adamc@255
|
3709 val () = if x = "Basis" then
|
adamc@255
|
3710 raise Fail "Not allowed to redefine structure 'Basis'"
|
adamc@255
|
3711 else
|
adamc@255
|
3712 ()
|
adamc@255
|
3713
|
adamc@255
|
3714 val formal = Option.map (elabSgn (env, denv)) sgno
|
adamc@255
|
3715
|
adamc@255
|
3716 val (str', sgn', gs') =
|
adamc@255
|
3717 case formal of
|
adamc@255
|
3718 NONE =>
|
adamc@255
|
3719 let
|
adamc@255
|
3720 val (str', actual, gs') = elabStr (env, denv) str
|
adamc@255
|
3721 in
|
adamc@255
|
3722 (str', selfifyAt env {str = str', sgn = actual}, gs')
|
adamc@255
|
3723 end
|
adamc@255
|
3724 | SOME (formal, gs1) =>
|
adamc@255
|
3725 let
|
adamc@325
|
3726 val str = wildifyStr env (str, formal)
|
adamc@255
|
3727 val (str', actual, gs2) = elabStr (env, denv) str
|
adamc@255
|
3728 in
|
adamc@1000
|
3729 subSgn env loc (selfifyAt env {str = str', sgn = actual}) formal;
|
adamc@255
|
3730 (str', formal, enD gs1 @ gs2)
|
adamc@255
|
3731 end
|
adamc@255
|
3732
|
adamc@255
|
3733 val (env', n) = E.pushStrNamed env x sgn'
|
adamc@834
|
3734 val denv' =
|
adamc@834
|
3735 case #1 str' of
|
adamc@834
|
3736 L'.StrConst _ => dopenConstraints (loc, env', denv) {str = x, strs = []}
|
adamc@1022
|
3737 | L'.StrApp _ => dopenConstraints (loc, env', denv) {str = x, strs = []}
|
adamc@834
|
3738 | _ => denv
|
adamc@255
|
3739 in
|
adamc@255
|
3740 case #1 (hnormSgn env sgn') of
|
adamc@255
|
3741 L'.SgnFun _ =>
|
adamc@255
|
3742 (case #1 str' of
|
adamc@255
|
3743 L'.StrFun _ => ()
|
adamc@255
|
3744 | _ => strError env (FunctorRebind loc))
|
adamc@255
|
3745 | _ => ();
|
adamc@834
|
3746 ([(L'.DStr (x, n, sgn', str'), loc)], (env', denv', gs' @ gs))
|
adamc@255
|
3747 end
|
adamc@255
|
3748
|
adamc@255
|
3749 | L.DFfiStr (x, sgn) =>
|
adamc@255
|
3750 let
|
adamc@255
|
3751 val (sgn', gs') = elabSgn (env, denv) sgn
|
adamc@255
|
3752
|
adamc@255
|
3753 val (env', n) = E.pushStrNamed env x sgn'
|
adamc@255
|
3754 in
|
adamc@255
|
3755 ([(L'.DFfiStr (x, n, sgn'), loc)], (env', denv, enD gs' @ gs))
|
adamc@255
|
3756 end
|
adamc@255
|
3757
|
adamc@255
|
3758 | L.DOpen (m, ms) =>
|
adamc@255
|
3759 (case E.lookupStr env m of
|
adamc@255
|
3760 NONE => (strError env (UnboundStr (loc, m));
|
adamc@255
|
3761 ([], (env, denv, gs)))
|
adamc@255
|
3762 | SOME (n, sgn) =>
|
adamc@255
|
3763 let
|
adamc@1030
|
3764 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adamc@1030
|
3765 case E.projectStr env {str = str, sgn = sgn, field = m} of
|
adamc@1030
|
3766 NONE => (strError env (UnboundStr (loc, m));
|
adamc@1030
|
3767 (strerror, sgnerror))
|
adamc@1030
|
3768 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adamc@1030
|
3769 ((L'.StrVar n, loc), sgn) ms
|
adamc@1030
|
3770
|
adamc@1030
|
3771 val sgn = selfifyAt env {str = str, sgn = sgn}
|
adamc@255
|
3772
|
adamc@628
|
3773 val (ds, env') = dopen env {str = n, strs = ms, sgn = sgn}
|
adamc@628
|
3774 val denv' = dopenConstraints (loc, env', denv) {str = m, strs = ms}
|
adamc@255
|
3775 in
|
adamc@255
|
3776 (ds, (env', denv', gs))
|
adamc@255
|
3777 end)
|
adamc@255
|
3778
|
adamc@255
|
3779 | L.DConstraint (c1, c2) =>
|
adamc@255
|
3780 let
|
adamc@255
|
3781 val (c1', k1, gs1) = elabCon (env, denv) c1
|
adamc@255
|
3782 val (c2', k2, gs2) = elabCon (env, denv) c2
|
adamc@255
|
3783 val gs3 = D.prove env denv (c1', c2', loc)
|
adamc@255
|
3784
|
adamc@628
|
3785 val denv' = D.assert env denv (c1', c2')
|
adamc@255
|
3786 in
|
adamc@255
|
3787 checkKind env c1' k1 (L'.KRecord (kunif loc), loc);
|
adamc@255
|
3788 checkKind env c2' k2 (L'.KRecord (kunif loc), loc);
|
adamc@255
|
3789
|
adamc@628
|
3790 ([(L'.DConstraint (c1', c2'), loc)], (env, denv', enD gs1 @ enD gs2 @ enD gs3 @ gs))
|
adamc@255
|
3791 end
|
adamc@255
|
3792
|
adamc@255
|
3793 | L.DOpenConstraints (m, ms) =>
|
adamc@255
|
3794 let
|
adamc@255
|
3795 val denv = dopenConstraints (loc, env, denv) {str = m, strs = ms}
|
adamc@255
|
3796 in
|
adamc@255
|
3797 ([], (env, denv, gs))
|
adamc@255
|
3798 end
|
adamc@255
|
3799
|
adamc@255
|
3800 | L.DExport str =>
|
adamc@255
|
3801 let
|
adamc@255
|
3802 val (str', sgn, gs') = elabStr (env, denv) str
|
adamc@255
|
3803
|
adamc@255
|
3804 val sgn =
|
adamc@255
|
3805 case #1 (hnormSgn env sgn) of
|
adamc@255
|
3806 L'.SgnConst sgis =>
|
adamc@255
|
3807 let
|
adamc@255
|
3808 fun doOne (all as (sgi, _), env) =
|
adamc@255
|
3809 (case sgi of
|
adamc@255
|
3810 L'.SgiVal (x, n, t) =>
|
adamc@325
|
3811 let
|
adamc@325
|
3812 fun doPage (makeRes, ran) =
|
adamc@628
|
3813 case hnormCon env ran of
|
adamc@628
|
3814 (L'.CApp (tf, arg), _) =>
|
adamc@628
|
3815 (case (hnormCon env tf, hnormCon env arg) of
|
adamc@628
|
3816 ((L'.CModProj (basis, [], "transaction"), _),
|
adamc@720
|
3817 (L'.CApp (tf, arg3), _)) =>
|
adamc@325
|
3818 (case (basis = !basis_r,
|
adamc@720
|
3819 hnormCon env tf, hnormCon env arg3) of
|
adamc@325
|
3820 (true,
|
adamc@720
|
3821 (L'.CApp (tf, arg2), _),
|
adamc@628
|
3822 ((L'.CRecord (_, []), _))) =>
|
adamc@720
|
3823 (case (hnormCon env tf) of
|
adamc@720
|
3824 (L'.CApp (tf, arg1), _) =>
|
adamc@720
|
3825 (case (hnormCon env tf,
|
adamc@720
|
3826 hnormCon env arg1,
|
adamc@720
|
3827 hnormCon env arg2) of
|
adamc@720
|
3828 (tf, arg1,
|
adamc@720
|
3829 (L'.CRecord (_, []), _)) =>
|
adamc@720
|
3830 let
|
adamc@720
|
3831 val t = (L'.CApp (tf, arg1), loc)
|
adamc@720
|
3832 val t = (L'.CApp (t, arg2), loc)
|
adamc@720
|
3833 val t = (L'.CApp (t, arg3), loc)
|
adamc@720
|
3834 val t = (L'.CApp (
|
adamc@720
|
3835 (L'.CModProj
|
adamc@720
|
3836 (basis, [], "transaction"), loc),
|
adamc@325
|
3837 t), loc)
|
adam@1347
|
3838
|
adam@1347
|
3839 fun normArgs t =
|
adam@1347
|
3840 case hnormCon env t of
|
adam@1347
|
3841 (L'.TFun (dom, ran), loc) =>
|
adam@1347
|
3842 (L'.TFun (hnormCon env dom, normArgs ran), loc)
|
adam@1347
|
3843 | t' => t'
|
adamc@720
|
3844 in
|
adam@1347
|
3845 (L'.SgiVal (x, n, normArgs (makeRes t)), loc)
|
adamc@720
|
3846 end
|
adamc@325
|
3847 | _ => all)
|
adamc@325
|
3848 | _ => all)
|
adamc@325
|
3849 | _ => all)
|
adamc@325
|
3850 | _ => all)
|
adamc@325
|
3851 | _ => all
|
adamc@325
|
3852 in
|
adamc@628
|
3853 case hnormCon env t of
|
adamc@628
|
3854 (L'.TFun (dom, ran), _) =>
|
adamc@628
|
3855 (case hnormCon env dom of
|
adamc@628
|
3856 (L'.TRecord domR, _) =>
|
adamc@325
|
3857 doPage (fn t => (L'.TFun ((L'.TRecord domR,
|
adamc@325
|
3858 loc),
|
adamc@325
|
3859 t), loc), ran)
|
adamc@325
|
3860 | _ => all)
|
adamc@325
|
3861 | _ => doPage (fn t => t, t)
|
adamc@325
|
3862 end
|
adamc@255
|
3863 | _ => all,
|
adamc@255
|
3864 E.sgiBinds env all)
|
adamc@255
|
3865 in
|
adamc@255
|
3866 (L'.SgnConst (#1 (ListUtil.foldlMap doOne env sgis)), loc)
|
adamc@255
|
3867 end
|
adamc@255
|
3868 | _ => sgn
|
adamc@255
|
3869 in
|
adamc@255
|
3870 ([(L'.DExport (E.newNamed (), sgn, str'), loc)], (env, denv, gs' @ gs))
|
adamc@255
|
3871 end
|
adamc@255
|
3872
|
adamc@707
|
3873 | L.DTable (x, c, pe, ce) =>
|
adamc@255
|
3874 let
|
adamc@707
|
3875 val cstK = (L'.KRecord (L'.KRecord (L'.KUnit, loc), loc), loc)
|
adamc@707
|
3876
|
adamc@255
|
3877 val (c', k, gs') = elabCon (env, denv) c
|
adamc@707
|
3878 val pkey = cunif (loc, cstK)
|
adamc@707
|
3879 val uniques = cunif (loc, cstK)
|
adamc@705
|
3880
|
adamc@705
|
3881 val ct = tableOf ()
|
adamc@705
|
3882 val ct = (L'.CApp (ct, c'), loc)
|
adamc@707
|
3883 val ct = (L'.CApp (ct, (L'.CConcat (pkey, uniques), loc)), loc)
|
adamc@705
|
3884
|
adamc@705
|
3885 val (env, n) = E.pushENamed env x ct
|
adamc@707
|
3886 val (pe', pet, gs'') = elabExp (env, denv) pe
|
adamc@707
|
3887 val (ce', cet, gs''') = elabExp (env, denv) ce
|
adamc@707
|
3888
|
adamc@707
|
3889 val pst = (L'.CModProj (!basis_r, [], "primary_key"), loc)
|
adamc@707
|
3890 val pst = (L'.CApp (pst, c'), loc)
|
adamc@707
|
3891 val pst = (L'.CApp (pst, pkey), loc)
|
adamc@704
|
3892
|
adamc@704
|
3893 val cst = (L'.CModProj (!basis_r, [], "sql_constraints"), loc)
|
adamc@704
|
3894 val cst = (L'.CApp (cst, c'), loc)
|
adamc@705
|
3895 val cst = (L'.CApp (cst, uniques), loc)
|
adamc@255
|
3896 in
|
adamc@255
|
3897 checkKind env c' k (L'.KRecord (L'.KType, loc), loc);
|
adamc@707
|
3898 checkCon env pe' pet pst;
|
adamc@707
|
3899 checkCon env ce' cet cst;
|
adamc@707
|
3900 ([(L'.DTable (!basis_r, x, n, c', pe', pkey, ce', uniques), loc)],
|
adamc@707
|
3901 (env, denv, gs''' @ gs'' @ enD gs' @ gs))
|
adamc@255
|
3902 end
|
adamc@338
|
3903 | L.DSequence x =>
|
adamc@338
|
3904 let
|
adamc@338
|
3905 val (env, n) = E.pushENamed env x (sequenceOf ())
|
adamc@338
|
3906 in
|
adamc@338
|
3907 ([(L'.DSequence (!basis_r, x, n), loc)], (env, denv, gs))
|
adamc@338
|
3908 end
|
adamc@754
|
3909 | L.DView (x, e) =>
|
adamc@754
|
3910 let
|
adamc@754
|
3911 val (e', t, gs') = elabExp (env, denv) e
|
adamc@754
|
3912
|
adamc@754
|
3913 val k = (L'.KRecord (L'.KType, loc), loc)
|
adamc@754
|
3914 val fs = cunif (loc, k)
|
adamc@754
|
3915 val ts = cunif (loc, (L'.KRecord k, loc))
|
adamc@754
|
3916 val tf = (L'.CApp ((L'.CMap (k, k), loc),
|
adamc@754
|
3917 (L'.CAbs ("_", k, (L'.CRecord ((L'.KType, loc), []), loc)), loc)), loc)
|
adamc@754
|
3918 val ts = (L'.CApp (tf, ts), loc)
|
adamc@754
|
3919
|
adamc@754
|
3920 val cv = viewOf ()
|
adamc@754
|
3921 val cv = (L'.CApp (cv, fs), loc)
|
adamc@754
|
3922 val (env', n) = E.pushENamed env x cv
|
adamc@754
|
3923
|
adamc@754
|
3924 val ct = queryOf ()
|
adamc@1191
|
3925 val ct = (L'.CApp (ct, (L'.CRecord ((L'.KRecord (L'.KType, loc), loc), []), loc)), loc)
|
adamc@754
|
3926 val ct = (L'.CApp (ct, ts), loc)
|
adamc@754
|
3927 val ct = (L'.CApp (ct, fs), loc)
|
adamc@754
|
3928 in
|
adamc@754
|
3929 checkCon env e' t ct;
|
adamc@754
|
3930 ([(L'.DView (!basis_r, x, n, e', fs), loc)],
|
adamc@754
|
3931 (env', denv, gs' @ gs))
|
adamc@754
|
3932 end
|
adamc@255
|
3933
|
adamc@563
|
3934 | L.DClass (x, k, c) =>
|
adamc@255
|
3935 let
|
adamc@623
|
3936 val k = elabKind env k
|
adamc@280
|
3937 val (c', ck, gs') = elabCon (env, denv) c
|
adamc@711
|
3938 val (env, n) = E.pushCNamed env x k (SOME c')
|
adamc@255
|
3939 val env = E.pushClass env n
|
adamc@255
|
3940 in
|
adamc@711
|
3941 checkKind env c' ck k;
|
adamc@563
|
3942 ([(L'.DClass (x, n, k, c'), loc)], (env, denv, enD gs' @ gs))
|
adamc@255
|
3943 end
|
adamc@271
|
3944
|
adamc@280
|
3945 | L.DDatabase s => ([(L'.DDatabase s, loc)], (env, denv, gs))
|
adamc@280
|
3946
|
adamc@459
|
3947 | L.DCookie (x, c) =>
|
adamc@459
|
3948 let
|
adamc@459
|
3949 val (c', k, gs') = elabCon (env, denv) c
|
adamc@459
|
3950 val (env, n) = E.pushENamed env x (L'.CApp (cookieOf (), c'), loc)
|
adamc@459
|
3951 in
|
adamc@459
|
3952 checkKind env c' k (L'.KType, loc);
|
adamc@459
|
3953 ([(L'.DCookie (!basis_r, x, n, c'), loc)], (env, denv, enD gs' @ gs))
|
adamc@459
|
3954 end
|
adamc@720
|
3955 | L.DStyle x =>
|
adamc@718
|
3956 let
|
adamc@720
|
3957 val (env, n) = E.pushENamed env x (styleOf ())
|
adamc@718
|
3958 in
|
adamc@720
|
3959 ([(L'.DStyle (!basis_r, x, n), loc)], (env, denv, gs))
|
adamc@718
|
3960 end
|
adamc@1075
|
3961 | L.DTask (e1, e2) =>
|
adamc@1073
|
3962 let
|
adamc@1075
|
3963 val (e1', t1, gs1) = elabExp (env, denv) e1
|
adamc@1075
|
3964 val (e2', t2, gs2) = elabExp (env, denv) e2
|
adamc@1075
|
3965
|
adam@1348
|
3966 val targ = cunif (loc, (L'.KType, loc))
|
adam@1348
|
3967
|
adamc@1075
|
3968 val t1' = (L'.CModProj (!basis_r, [], "task_kind"), loc)
|
adam@1348
|
3969 val t1' = (L'.CApp (t1', targ), loc)
|
adam@1348
|
3970
|
adamc@1075
|
3971 val t2' = (L'.CApp ((L'.CModProj (!basis_r, [], "transaction"), loc),
|
adamc@1075
|
3972 (L'.TRecord (L'.CRecord ((L'.KType, loc), []), loc), loc)), loc)
|
adam@1348
|
3973 val t2' = (L'.TFun (targ, t2'), loc)
|
adamc@1073
|
3974 in
|
adamc@1075
|
3975 checkCon env e1' t1 t1';
|
adamc@1075
|
3976 checkCon env e2' t2 t2';
|
adamc@1075
|
3977 ([(L'.DTask (e1', e2'), loc)], (env, denv, gs2 @ gs1 @ gs))
|
adamc@1073
|
3978 end
|
adamc@1199
|
3979 | L.DPolicy e1 =>
|
adamc@1199
|
3980 let
|
adamc@1199
|
3981 val (e1', t1, gs1) = elabExp (env, denv) e1
|
adamc@1199
|
3982
|
adamc@1199
|
3983 val t1' = (L'.CModProj (!basis_r, [], "sql_policy"), loc)
|
adamc@1199
|
3984 in
|
adamc@1199
|
3985 checkCon env e1' t1 t1';
|
adamc@1199
|
3986 ([(L'.DPolicy e1', loc)], (env, denv, gs1 @ gs))
|
adamc@1199
|
3987 end
|
adamc@459
|
3988
|
adam@1294
|
3989 | L.DOnError (m1, ms, s) =>
|
adam@1294
|
3990 (case E.lookupStr env m1 of
|
adam@1294
|
3991 NONE => (expError env (UnboundStrInExp (loc, m1));
|
adam@1294
|
3992 ([], (env, denv, [])))
|
adam@1294
|
3993 | SOME (n, sgn) =>
|
adam@1294
|
3994 let
|
adam@1294
|
3995 val (str, sgn) = foldl (fn (m, (str, sgn)) =>
|
adam@1294
|
3996 case E.projectStr env {sgn = sgn, str = str, field = m} of
|
adam@1294
|
3997 NONE => (conError env (UnboundStrInCon (loc, m));
|
adam@1294
|
3998 (strerror, sgnerror))
|
adam@1294
|
3999 | SOME sgn => ((L'.StrProj (str, m), loc), sgn))
|
adam@1294
|
4000 ((L'.StrVar n, loc), sgn) ms
|
adam@1294
|
4001
|
adam@1294
|
4002 val t = case E.projectVal env {sgn = sgn, str = str, field = s} of
|
adam@1294
|
4003 NONE => (expError env (UnboundExp (loc, s));
|
adam@1294
|
4004 cerror)
|
adam@1294
|
4005 | SOME t => t
|
adam@1294
|
4006
|
adam@1294
|
4007 val page = (L'.CModProj (!basis_r, [], "page"), loc)
|
adam@1294
|
4008 val xpage = (L'.CApp ((L'.CModProj (!basis_r, [], "transaction"), loc), page), loc)
|
adam@1294
|
4009 val func = (L'.TFun ((L'.CModProj (!basis_r, [], "xbody"), loc), xpage), loc)
|
adam@1294
|
4010 in
|
adam@1294
|
4011 unifyCons env loc t func;
|
adam@1294
|
4012 ([(L'.DOnError (n, ms, s), loc)], (env, denv, gs))
|
adam@1294
|
4013 end)
|
adam@1294
|
4014
|
adamc@280
|
4015 (*val tcs = List.filter (fn TypeClass _ => true | _ => false) (#3 (#2 r))*)
|
adamc@255
|
4016 in
|
adamc@904
|
4017 (*prefaces "/elabDecl" [("d", SourcePrint.p_decl dAll)];*)
|
adamc@255
|
4018 r
|
adamc@255
|
4019 end
|
adamc@211
|
4020
|
adamc@83
|
4021 and elabStr (env, denv) (str, loc) =
|
adamc@31
|
4022 case str of
|
adamc@31
|
4023 L.StrConst ds =>
|
adamc@31
|
4024 let
|
adamc@88
|
4025 val (ds', (_, _, gs)) = ListUtil.foldlMapConcat elabDecl (env, denv, []) ds
|
adamc@123
|
4026 val sgis = ListUtil.mapConcat sgiOfDecl ds'
|
adamc@63
|
4027
|
adamc@63
|
4028 val (sgis, _, _, _, _) =
|
adamc@64
|
4029 foldr (fn ((sgi, loc), (sgis, cons, vals, sgns, strs)) =>
|
adamc@63
|
4030 case sgi of
|
adamc@64
|
4031 L'.SgiConAbs (x, n, k) =>
|
adamc@64
|
4032 let
|
adamc@64
|
4033 val (cons, x) =
|
adamc@64
|
4034 if SS.member (cons, x) then
|
adamc@64
|
4035 (cons, "?" ^ x)
|
adamc@64
|
4036 else
|
adamc@64
|
4037 (SS.add (cons, x), x)
|
adamc@64
|
4038 in
|
adamc@64
|
4039 ((L'.SgiConAbs (x, n, k), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@64
|
4040 end
|
adamc@64
|
4041 | L'.SgiCon (x, n, k, c) =>
|
adamc@64
|
4042 let
|
adamc@64
|
4043 val (cons, x) =
|
adamc@64
|
4044 if SS.member (cons, x) then
|
adamc@64
|
4045 (cons, "?" ^ x)
|
adamc@64
|
4046 else
|
adamc@64
|
4047 (SS.add (cons, x), x)
|
adamc@64
|
4048 in
|
adamc@64
|
4049 ((L'.SgiCon (x, n, k, c), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@64
|
4050 end
|
adamc@805
|
4051 | L'.SgiDatatype dts =>
|
adamc@156
|
4052 let
|
adamc@805
|
4053 fun doOne ((x, n, xs, xncs), (cons, vals)) =
|
adamc@805
|
4054 let
|
adamc@805
|
4055 val (cons, x) =
|
adamc@805
|
4056 if SS.member (cons, x) then
|
adamc@805
|
4057 (cons, "?" ^ x)
|
adamc@156
|
4058 else
|
adamc@805
|
4059 (SS.add (cons, x), x)
|
adamc@805
|
4060
|
adamc@805
|
4061 val (xncs, vals) =
|
adamc@805
|
4062 ListUtil.foldlMap
|
adamc@805
|
4063 (fn ((x, n, t), vals) =>
|
adamc@805
|
4064 if SS.member (vals, x) then
|
adamc@805
|
4065 (("?" ^ x, n, t), vals)
|
adamc@805
|
4066 else
|
adamc@805
|
4067 ((x, n, t), SS.add (vals, x)))
|
adamc@805
|
4068 vals xncs
|
adamc@805
|
4069 in
|
adamc@805
|
4070 ((x, n, xs, xncs), (cons, vals))
|
adamc@805
|
4071 end
|
adamc@805
|
4072
|
adamc@805
|
4073 val (dts, (cons, vals)) = ListUtil.foldlMap doOne (cons, vals) dts
|
adamc@156
|
4074 in
|
adamc@805
|
4075 ((L'.SgiDatatype dts, loc) :: sgis, cons, vals, sgns, strs)
|
adamc@156
|
4076 end
|
adamc@191
|
4077 | L'.SgiDatatypeImp (x, n, m1, ms, x', xs, xncs) =>
|
adamc@156
|
4078 let
|
adamc@156
|
4079 val (cons, x) =
|
adamc@156
|
4080 if SS.member (cons, x) then
|
adamc@156
|
4081 (cons, "?" ^ x)
|
adamc@156
|
4082 else
|
adamc@156
|
4083 (SS.add (cons, x), x)
|
adamc@156
|
4084 in
|
adamc@191
|
4085 ((L'.SgiDatatypeImp (x, n, m1, ms, x', xs, xncs), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@156
|
4086 end
|
adamc@64
|
4087 | L'.SgiVal (x, n, c) =>
|
adamc@64
|
4088 let
|
adamc@64
|
4089 val (vals, x) =
|
adamc@64
|
4090 if SS.member (vals, x) then
|
adamc@64
|
4091 (vals, "?" ^ x)
|
adamc@64
|
4092 else
|
adamc@64
|
4093 (SS.add (vals, x), x)
|
adamc@64
|
4094 in
|
adamc@64
|
4095 ((L'.SgiVal (x, n, c), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@64
|
4096 end
|
adamc@64
|
4097 | L'.SgiSgn (x, n, sgn) =>
|
adamc@64
|
4098 let
|
adamc@64
|
4099 val (sgns, x) =
|
adamc@64
|
4100 if SS.member (sgns, x) then
|
adamc@64
|
4101 (sgns, "?" ^ x)
|
adamc@64
|
4102 else
|
adamc@64
|
4103 (SS.add (sgns, x), x)
|
adamc@64
|
4104 in
|
adamc@64
|
4105 ((L'.SgiSgn (x, n, sgn), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@64
|
4106 end
|
adamc@64
|
4107
|
adamc@64
|
4108 | L'.SgiStr (x, n, sgn) =>
|
adamc@64
|
4109 let
|
adamc@64
|
4110 val (strs, x) =
|
adamc@64
|
4111 if SS.member (strs, x) then
|
adamc@64
|
4112 (strs, "?" ^ x)
|
adamc@64
|
4113 else
|
adamc@64
|
4114 (SS.add (strs, x), x)
|
adamc@64
|
4115 in
|
adamc@64
|
4116 ((L'.SgiStr (x, n, sgn), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@88
|
4117 end
|
adamc@203
|
4118 | L'.SgiConstraint _ => ((sgi, loc) :: sgis, cons, vals, sgns, strs)
|
adamc@563
|
4119 | L'.SgiClassAbs (x, n, k) =>
|
adamc@211
|
4120 let
|
adamc@211
|
4121 val (cons, x) =
|
adamc@211
|
4122 if SS.member (cons, x) then
|
adamc@211
|
4123 (cons, "?" ^ x)
|
adamc@211
|
4124 else
|
adamc@211
|
4125 (SS.add (cons, x), x)
|
adamc@211
|
4126 in
|
adamc@563
|
4127 ((L'.SgiClassAbs (x, n, k), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@211
|
4128 end
|
adamc@563
|
4129 | L'.SgiClass (x, n, k, c) =>
|
adamc@211
|
4130 let
|
adamc@211
|
4131 val (cons, x) =
|
adamc@211
|
4132 if SS.member (cons, x) then
|
adamc@211
|
4133 (cons, "?" ^ x)
|
adamc@211
|
4134 else
|
adamc@211
|
4135 (SS.add (cons, x), x)
|
adamc@211
|
4136 in
|
adamc@563
|
4137 ((L'.SgiClass (x, n, k, c), loc) :: sgis, cons, vals, sgns, strs)
|
adamc@203
|
4138 end)
|
adamc@64
|
4139
|
adamc@63
|
4140 ([], SS.empty, SS.empty, SS.empty, SS.empty) sgis
|
adamc@31
|
4141 in
|
adamc@83
|
4142 ((L'.StrConst ds', loc), (L'.SgnConst sgis, loc), gs)
|
adamc@31
|
4143 end
|
adamc@31
|
4144 | L.StrVar x =>
|
adamc@31
|
4145 (case E.lookupStr env x of
|
adamc@31
|
4146 NONE =>
|
adamc@31
|
4147 (strError env (UnboundStr (loc, x));
|
adamc@83
|
4148 (strerror, sgnerror, []))
|
adamc@83
|
4149 | SOME (n, sgn) => ((L'.StrVar n, loc), sgn, []))
|
adamc@34
|
4150 | L.StrProj (str, x) =>
|
adamc@34
|
4151 let
|
adamc@83
|
4152 val (str', sgn, gs) = elabStr (env, denv) str
|
adamc@34
|
4153 in
|
adamc@34
|
4154 case E.projectStr env {str = str', sgn = sgn, field = x} of
|
adamc@34
|
4155 NONE => (strError env (UnboundStr (loc, x));
|
adamc@83
|
4156 (strerror, sgnerror, []))
|
adamc@83
|
4157 | SOME sgn => ((L'.StrProj (str', x), loc), sgn, gs)
|
adamc@34
|
4158 end
|
adamc@41
|
4159 | L.StrFun (m, dom, ranO, str) =>
|
adamc@41
|
4160 let
|
adamc@83
|
4161 val (dom', gs1) = elabSgn (env, denv) dom
|
adamc@41
|
4162 val (env', n) = E.pushStrNamed env m dom'
|
adamc@834
|
4163 val denv' = dopenConstraints (loc, env', denv) {str = m, strs = []}
|
adamc@834
|
4164 val (str', actual, gs2) = elabStr (env', denv') str
|
adamc@41
|
4165
|
adamc@83
|
4166 val (formal, gs3) =
|
adamc@41
|
4167 case ranO of
|
adamc@83
|
4168 NONE => (actual, [])
|
adamc@41
|
4169 | SOME ran =>
|
adamc@41
|
4170 let
|
adamc@834
|
4171 val (ran', gs) = elabSgn (env', denv') ran
|
adamc@41
|
4172 in
|
adamc@1000
|
4173 subSgn env' loc actual ran';
|
adamc@83
|
4174 (ran', gs)
|
adamc@41
|
4175 end
|
adamc@41
|
4176 in
|
adamc@41
|
4177 ((L'.StrFun (m, n, dom', formal, str'), loc),
|
adamc@83
|
4178 (L'.SgnFun (m, n, dom', formal), loc),
|
adamc@228
|
4179 enD gs1 @ gs2 @ enD gs3)
|
adamc@41
|
4180 end
|
adamc@44
|
4181 | L.StrApp (str1, str2) =>
|
adamc@44
|
4182 let
|
adamc@83
|
4183 val (str1', sgn1, gs1) = elabStr (env, denv) str1
|
adamc@325
|
4184 val str2 =
|
adamc@325
|
4185 case sgn1 of
|
adamc@325
|
4186 (L'.SgnFun (_, _, dom, _), _) =>
|
adamc@1275
|
4187 let
|
adamc@1275
|
4188 val s = wildifyStr env (str2, dom)
|
adamc@1275
|
4189 in
|
adamc@1275
|
4190 (*Print.preface ("Wild", SourcePrint.p_str s);*)
|
adamc@1275
|
4191 s
|
adamc@1275
|
4192 end
|
adamc@325
|
4193 | _ => str2
|
adamc@83
|
4194 val (str2', sgn2, gs2) = elabStr (env, denv) str2
|
adamc@1270
|
4195 in
|
adamc@44
|
4196 case #1 (hnormSgn env sgn1) of
|
adamc@83
|
4197 L'.SgnError => (strerror, sgnerror, [])
|
adamc@44
|
4198 | L'.SgnFun (m, n, dom, ran) =>
|
adamc@1000
|
4199 (subSgn env loc sgn2 dom;
|
adamc@44
|
4200 case #1 (hnormSgn env ran) of
|
adamc@83
|
4201 L'.SgnError => (strerror, sgnerror, [])
|
adamc@44
|
4202 | L'.SgnConst sgis =>
|
adamc@44
|
4203 ((L'.StrApp (str1', str2'), loc),
|
adamc@83
|
4204 (L'.SgnConst ((L'.SgiStr (m, n, selfifyAt env {str = str2', sgn = sgn2}), loc) :: sgis), loc),
|
adamc@83
|
4205 gs1 @ gs2)
|
adamc@44
|
4206 | _ => raise Fail "Unable to hnormSgn in functor application")
|
adamc@44
|
4207 | _ => (strError env (NotFunctor sgn1);
|
adamc@83
|
4208 (strerror, sgnerror, []))
|
adamc@44
|
4209 end
|
adamc@31
|
4210
|
adamc@987
|
4211 fun resolveClass env = E.resolveClass (hnormCon env) (consEq env dummy) env
|
adamc@833
|
4212
|
adamc@325
|
4213 fun elabFile basis topStr topSgn env file =
|
adamc@56
|
4214 let
|
adamc@713
|
4215 val () = mayDelay := true
|
adamc@713
|
4216 val () = delayedUnifs := []
|
adamc@830
|
4217 val () = delayedExhaustives := []
|
adamc@713
|
4218
|
adamc@83
|
4219 val (sgn, gs) = elabSgn (env, D.empty) (L.SgnConst basis, ErrorMsg.dummySpan)
|
adamc@83
|
4220 val () = case gs of
|
adamc@83
|
4221 [] => ()
|
adamc@207
|
4222 | _ => (app (fn (_, env, _, c1, c2) =>
|
adamc@207
|
4223 prefaces "Unresolved"
|
adamc@207
|
4224 [("c1", p_con env c1),
|
adamc@207
|
4225 ("c2", p_con env c2)]) gs;
|
adamc@207
|
4226 raise Fail "Unresolved disjointness constraints in Basis")
|
adamc@83
|
4227
|
adamc@56
|
4228 val (env', basis_n) = E.pushStrNamed env "Basis" sgn
|
adamc@210
|
4229 val () = basis_r := basis_n
|
adamc@56
|
4230
|
adamc@628
|
4231 val (ds, env') = dopen env' {str = basis_n, strs = [], sgn = sgn}
|
adamc@56
|
4232
|
adamc@56
|
4233 fun discoverC r x =
|
adamc@56
|
4234 case E.lookupC env' x of
|
adamc@56
|
4235 E.NotBound => raise Fail ("Constructor " ^ x ^ " unbound in Basis")
|
adamc@56
|
4236 | E.Rel _ => raise Fail ("Constructor " ^ x ^ " bound relatively in Basis")
|
adamc@56
|
4237 | E.Named (n, (_, loc)) => r := (L'.CNamed n, loc)
|
adamc@56
|
4238
|
adamc@56
|
4239 val () = discoverC int "int"
|
adamc@56
|
4240 val () = discoverC float "float"
|
adamc@56
|
4241 val () = discoverC string "string"
|
adamc@821
|
4242 val () = discoverC char "char"
|
adamc@203
|
4243 val () = discoverC table "sql_table"
|
adamc@56
|
4244
|
adamc@325
|
4245 val (topSgn, gs) = elabSgn (env', D.empty) (L.SgnConst topSgn, ErrorMsg.dummySpan)
|
adamc@325
|
4246 val () = case gs of
|
adamc@325
|
4247 [] => ()
|
adamc@325
|
4248 | _ => raise Fail "Unresolved disjointness constraints in top.urs"
|
adamc@325
|
4249 val (topStr, topSgn', gs) = elabStr (env', D.empty) (L.StrConst topStr, ErrorMsg.dummySpan)
|
adamc@325
|
4250 val () = case gs of
|
adamc@325
|
4251 [] => ()
|
adamc@329
|
4252 | _ => app (fn Disjoint (loc, env, denv, c1, c2) =>
|
adamc@329
|
4253 (case D.prove env denv (c1, c2, loc) of
|
adamc@329
|
4254 [] => ()
|
adamc@329
|
4255 | _ =>
|
adamc@329
|
4256 (prefaces "Unresolved constraint in top.ur"
|
adamc@329
|
4257 [("loc", PD.string (ErrorMsg.spanToString loc)),
|
adamc@329
|
4258 ("c1", p_con env c1),
|
adamc@720
|
4259 ("c2", p_con env c2)];
|
adamc@478
|
4260 raise Fail "Unresolved constraint in top.ur"))
|
adamc@564
|
4261 | TypeClass (env, c, r, loc) =>
|
adamc@564
|
4262 let
|
adamc@564
|
4263 val c = normClassKey env c
|
adamc@564
|
4264 in
|
adamc@833
|
4265 case resolveClass env c of
|
adamc@564
|
4266 SOME e => r := SOME e
|
adamc@564
|
4267 | NONE => expError env (Unresolvable (loc, c))
|
adamc@634
|
4268 end) gs
|
adamc@564
|
4269
|
adamc@1000
|
4270 val () = subSgn env' ErrorMsg.dummySpan topSgn' topSgn
|
adamc@720
|
4271
|
adamc@325
|
4272 val (env', top_n) = E.pushStrNamed env' "Top" topSgn
|
adamc@633
|
4273 val () = top_r := top_n
|
adamc@325
|
4274
|
adamc@628
|
4275 val (ds', env') = dopen env' {str = top_n, strs = [], sgn = topSgn}
|
adamc@325
|
4276
|
adamc@83
|
4277 fun elabDecl' (d, (env, gs)) =
|
adamc@76
|
4278 let
|
adamc@76
|
4279 val () = resetKunif ()
|
adamc@76
|
4280 val () = resetCunif ()
|
adam@1345
|
4281 val (ds, (env', _, gs)) = elabDecl (d, (env, D.empty, gs))
|
adamc@76
|
4282 in
|
adam@1345
|
4283 (**)
|
adam@1345
|
4284 (ds, (env', gs))
|
adamc@76
|
4285 end
|
adamc@76
|
4286
|
adam@1345
|
4287 val (file, (env'', gs)) = ListUtil.foldlMapConcat elabDecl' (env', []) file
|
adamc@753
|
4288
|
adamc@777
|
4289 fun oneSummaryRound () =
|
adamc@777
|
4290 if ErrorMsg.anyErrors () then
|
adamc@777
|
4291 ()
|
adamc@777
|
4292 else
|
adamc@777
|
4293 let
|
adamc@777
|
4294 val delayed = !delayedUnifs
|
adamc@777
|
4295 in
|
adamc@777
|
4296 delayedUnifs := [];
|
adamc@777
|
4297 app (fn (loc, env, k, s1, s2) =>
|
adamc@777
|
4298 unifySummaries env (loc, k, normalizeRecordSummary env s1, normalizeRecordSummary env s2))
|
adamc@777
|
4299 delayed
|
adamc@777
|
4300 end
|
adamc@56
|
4301 in
|
adamc@777
|
4302 oneSummaryRound ();
|
adamc@753
|
4303
|
adamc@753
|
4304 if ErrorMsg.anyErrors () then
|
adamc@753
|
4305 ()
|
adamc@753
|
4306 else
|
adamc@753
|
4307 let
|
adamc@753
|
4308 fun solver gs =
|
adamc@753
|
4309 let
|
adamc@753
|
4310 val (gs, solved) =
|
adamc@753
|
4311 ListUtil.foldlMapPartial
|
adamc@753
|
4312 (fn (g, solved) =>
|
adamc@753
|
4313 case g of
|
adamc@753
|
4314 Disjoint (loc, env, denv, c1, c2) =>
|
adamc@753
|
4315 (case D.prove env denv (c1, c2, loc) of
|
adamc@753
|
4316 [] => (NONE, true)
|
adamc@753
|
4317 | _ => (SOME g, solved))
|
adamc@753
|
4318 | TypeClass (env, c, r, loc) =>
|
adamc@753
|
4319 let
|
adamc@753
|
4320 fun default () = (SOME g, solved)
|
adamc@753
|
4321
|
adamc@753
|
4322 val c = normClassKey env c
|
adamc@753
|
4323 in
|
adamc@833
|
4324 case resolveClass env c of
|
adamc@753
|
4325 SOME e => (r := SOME e;
|
adamc@753
|
4326 (NONE, true))
|
adamc@753
|
4327 | NONE =>
|
adamc@753
|
4328 case #1 (hnormCon env c) of
|
adamc@753
|
4329 L'.CApp (f, x) =>
|
adamc@753
|
4330 (case (#1 (hnormCon env f), #1 (hnormCon env x)) of
|
adamc@753
|
4331 (L'.CKApp (f, _), L'.CRecord (k, xcs)) =>
|
adamc@753
|
4332 (case #1 (hnormCon env f) of
|
adamc@753
|
4333 L'.CModProj (top_n', [], "folder") =>
|
adamc@753
|
4334 if top_n' = top_n then
|
adamc@753
|
4335 let
|
adamc@753
|
4336 val e = (L'.EModProj (top_n, ["Folder"], "nil"), loc)
|
adamc@753
|
4337 val e = (L'.EKApp (e, k), loc)
|
adamc@753
|
4338
|
adamc@753
|
4339 val (folder, _) = foldr (fn ((x, c), (folder, xcs)) =>
|
adamc@753
|
4340 let
|
adamc@753
|
4341 val e = (L'.EModProj (top_n, ["Folder"],
|
adamc@753
|
4342 "cons"), loc)
|
adamc@753
|
4343 val e = (L'.EKApp (e, k), loc)
|
adamc@753
|
4344 val e = (L'.ECApp (e,
|
adamc@753
|
4345 (L'.CRecord (k, xcs),
|
adamc@753
|
4346 loc)), loc)
|
adamc@753
|
4347 val e = (L'.ECApp (e, x), loc)
|
adamc@753
|
4348 val e = (L'.ECApp (e, c), loc)
|
adamc@753
|
4349 val e = (L'.EApp (e, folder), loc)
|
adamc@753
|
4350 in
|
adamc@753
|
4351 (e, (x, c) :: xcs)
|
adamc@753
|
4352 end)
|
adamc@753
|
4353 (e, []) xcs
|
adamc@753
|
4354 in
|
adamc@753
|
4355 (r := SOME folder;
|
adamc@753
|
4356 (NONE, true))
|
adamc@753
|
4357 end
|
adamc@753
|
4358 else
|
adamc@753
|
4359 default ()
|
adamc@753
|
4360 | _ => default ())
|
adamc@753
|
4361 | _ => default ())
|
adamc@753
|
4362 | _ => default ()
|
adamc@753
|
4363 end)
|
adamc@753
|
4364 false gs
|
adamc@753
|
4365 in
|
adamc@753
|
4366 case (gs, solved) of
|
adamc@753
|
4367 ([], _) => ()
|
adamc@777
|
4368 | (_, true) => (oneSummaryRound (); solver gs)
|
adamc@753
|
4369 | _ =>
|
adamc@753
|
4370 app (fn Disjoint (loc, env, denv, c1, c2) =>
|
adamc@1048
|
4371 let
|
adamc@1048
|
4372 val c1' = ElabOps.hnormCon env c1
|
adamc@1048
|
4373 val c2' = ElabOps.hnormCon env c2
|
adamc@1048
|
4374
|
adamc@1048
|
4375 fun isUnif (c, _) =
|
adamc@1048
|
4376 case c of
|
adamc@1048
|
4377 L'.CUnif _ => true
|
adamc@1048
|
4378 | _ => false
|
adamc@1048
|
4379
|
adamc@1048
|
4380 fun maybeAttr (c, _) =
|
adamc@1048
|
4381 case c of
|
adamc@1048
|
4382 L'.CRecord ((L'.KType, _), xts) => true
|
adamc@1048
|
4383 | _ => false
|
adamc@1048
|
4384 in
|
adamc@1048
|
4385 ErrorMsg.errorAt loc "Couldn't prove field name disjointness";
|
adamc@1048
|
4386 eprefaces' [("Con 1", p_con env c1),
|
adamc@1048
|
4387 ("Con 2", p_con env c2),
|
adamc@1048
|
4388 ("Hnormed 1", p_con env c1'),
|
adamc@1048
|
4389 ("Hnormed 2", p_con env c2')];
|
adamc@1048
|
4390
|
adam@1345
|
4391 (*app (fn (loc, env, k, s1, s2) =>
|
adam@1341
|
4392 eprefaces' [("s1", p_summary env (normalizeRecordSummary env s1)),
|
adam@1341
|
4393 ("s2", p_summary env (normalizeRecordSummary env s2))])
|
adam@1345
|
4394 (!delayedUnifs);*)
|
adam@1341
|
4395
|
adamc@1048
|
4396 if (isUnif c1' andalso maybeAttr c2')
|
adamc@1048
|
4397 orelse (isUnif c2' andalso maybeAttr c1') then
|
adamc@1048
|
4398 TextIO.output (TextIO.stdErr,
|
adamc@1048
|
4399 "You may be using a disallowed attribute with an HTML tag.\n")
|
adamc@1048
|
4400 else
|
adamc@1048
|
4401 ()
|
adamc@1048
|
4402 end
|
adamc@753
|
4403 | TypeClass (env, c, r, loc) =>
|
adamc@753
|
4404 expError env (Unresolvable (loc, c)))
|
adamc@753
|
4405 gs
|
adamc@753
|
4406 end
|
adamc@753
|
4407 in
|
adamc@753
|
4408 solver gs
|
adamc@753
|
4409 end;
|
adamc@753
|
4410
|
adamc@713
|
4411 mayDelay := false;
|
adamc@713
|
4412
|
adamc@777
|
4413 if ErrorMsg.anyErrors () then
|
adamc@777
|
4414 ()
|
adamc@777
|
4415 else
|
adamc@777
|
4416 (app (fn (loc, env, k, s1, s2) =>
|
adamc@777
|
4417 unifySummaries env (loc, k, normalizeRecordSummary env s1, normalizeRecordSummary env s2)
|
adamc@777
|
4418 handle CUnify' err => (ErrorMsg.errorAt loc "Error in final record unification";
|
adamc@777
|
4419 cunifyError env err))
|
adamc@777
|
4420 (!delayedUnifs);
|
adamc@777
|
4421 delayedUnifs := []);
|
adamc@713
|
4422
|
adam@1346
|
4423 if ErrorMsg.anyErrors () then
|
adam@1346
|
4424 ()
|
adam@1346
|
4425 else
|
adam@1346
|
4426 ignore (List.exists (fn d => if kunifsInDecl d then
|
adam@1346
|
4427 (declError env'' (KunifsRemain [d]);
|
adam@1346
|
4428 true)
|
adam@1346
|
4429 else
|
adam@1346
|
4430 false) file);
|
adam@1345
|
4431
|
adam@1346
|
4432 if ErrorMsg.anyErrors () then
|
adam@1346
|
4433 ()
|
adam@1346
|
4434 else
|
adam@1346
|
4435 ignore (List.exists (fn d => case cunifsInDecl d of
|
adam@1346
|
4436 NONE => false
|
adam@1346
|
4437 | SOME _ => (declError env'' (CunifsRemain [d]);
|
adam@1346
|
4438 true)) file);
|
adamc@750
|
4439
|
adamc@830
|
4440 if ErrorMsg.anyErrors () then
|
adamc@830
|
4441 ()
|
adamc@830
|
4442 else
|
adamc@837
|
4443 app (fn all as (env, _, _, loc) =>
|
adamc@830
|
4444 case exhaustive all of
|
adamc@830
|
4445 NONE => ()
|
adamc@830
|
4446 | SOME p => expError env (Inexhaustive (loc, p)))
|
adamc@830
|
4447 (!delayedExhaustives);
|
adamc@830
|
4448
|
adamc@799
|
4449 (*preface ("file", p_file env' file);*)
|
adam@1345
|
4450
|
adamc@325
|
4451 (L'.DFfiStr ("Basis", basis_n, sgn), ErrorMsg.dummySpan)
|
adamc@325
|
4452 :: ds
|
adamc@325
|
4453 @ (L'.DStr ("Top", top_n, topSgn, topStr), ErrorMsg.dummySpan)
|
adamc@325
|
4454 :: ds' @ file
|
adamc@56
|
4455 end
|
adamc@2
|
4456
|
adamc@2
|
4457 end
|