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