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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 (* Pretty-printing Ur/Web *)
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29
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30 structure SourcePrint :> SOURCE_PRINT = struct
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31
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32 open Print.PD
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33 open Print
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34
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35 open Source
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36
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37 fun p_kind' par (k, _) =
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38 case k of
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39 KType => string "Type"
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40 | KArrow (k1, k2) => parenIf par (box [p_kind' true k1,
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41 space,
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42 string "->",
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43 space,
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44 p_kind k2])
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45 | KName => string "Name"
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46 | KRecord k => box [string "{", p_kind k, string "}"]
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47 | KUnit => string "Unit"
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48 | KWild => string "_"
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49 | KTuple ks => box [string "(",
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50 p_list_sep (box [space, string "*", space]) p_kind ks,
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51 string ")"]
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52
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53 and p_kind k = p_kind' false k
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54
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55 fun p_explicitness e =
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56 case e of
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57 Explicit => string "::"
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58 | Implicit => string ":::"
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59
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60 fun p_con' par (c, _) =
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61 case c of
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62 CAnnot (c, k) => box [string "(",
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63 p_con c,
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64 space,
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65 string "::",
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66 space,
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67 p_kind k,
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68 string ")"]
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69
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70 | TFun (t1, t2) => parenIf par (box [p_con' true t1,
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71 space,
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72 string "->",
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73 space,
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74 p_con t2])
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75 | TCFun (e, x, k, c) => parenIf par (box [string x,
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76 space,
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77 p_explicitness e,
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78 space,
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79 p_kind k,
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80 space,
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81 string "->",
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82 space,
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83 p_con c])
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84 | TDisjoint (c1, c2, c3) => parenIf par (box [p_con c1,
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85 space,
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86 string "~",
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87 space,
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88 p_con c2,
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89 space,
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90 string "->",
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91 space,
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92 p_con c3])
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93 | TRecord (CRecord xcs, _) => box [string "{",
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94 p_list (fn (x, c) =>
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95 box [p_name x,
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96 space,
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97 string ":",
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98 space,
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99 p_con c]) xcs,
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100 string "}"]
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101 | TRecord c => box [string "$",
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102 p_con' true c]
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103
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104 | CVar (ss, s) => p_list_sep (string ".") string (ss @ [s])
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105 | CApp (c1, c2) => parenIf par (box [p_con c1,
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106 space,
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107 p_con' true c2])
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108 | CAbs (x, NONE, c) => parenIf par (box [string "fn",
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109 space,
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110 string x,
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111 space,
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112 string "=>",
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113 space,
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114 p_con c])
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115 | CAbs (x, SOME k, c) => parenIf par (box [string "fn",
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116 space,
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117 string x,
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118 space,
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119 string "::",
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120 space,
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121 p_kind k,
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122 space,
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123 string "=>",
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124 space,
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125 p_con c])
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126 | CDisjoint (c1, c2, c3) => parenIf par (box [p_con c1,
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127 space,
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128 string "~",
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129 space,
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130 p_con c2,
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131 space,
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132 string "=>",
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133 space,
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134 p_con c3])
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135
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136 | CName s => box [string "#", string s]
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137
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138 | CRecord xcs => box [string "[",
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139 p_list (fn (x, c) =>
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140 box [p_con x,
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141 space,
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142 string "=",
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143 space,
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144 p_con c]) xcs,
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145 string "]"]
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146 | CConcat (c1, c2) => parenIf par (box [p_con' true c1,
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147 space,
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148 string "++",
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149 space,
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150 p_con c2])
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151 | CFold => string "fold"
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152
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153 | CUnit => string "()"
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154
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155 | CWild k => box [string "(_",
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156 space,
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157 string "::",
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158 space,
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159 p_kind k,
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160 string ")"]
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161
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162 | CTuple cs => box [string "(",
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163 p_list p_con cs,
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164 string ")"]
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165 | CProj (c, n) => box [p_con c,
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166 string ".",
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167 string (Int.toString n)]
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168
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169 and p_con c = p_con' false c
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170
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171 and p_name (all as (c, _)) =
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172 case c of
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173 CName s => string s
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174 | _ => p_con all
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175
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176 fun p_pat' par (p, _) =
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177 case p of
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178 PWild => string "_"
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179 | PVar s => string s
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180 | PPrim p => Prim.p_t p
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181 | PCon (ms, x, NONE) => p_list_sep (string ".") string (ms @ [x])
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182 | PCon (ms, x, SOME p) => parenIf par (box [p_list_sep (string ".") string (ms @ [x]),
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183 space,
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184 p_pat' true p])
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185 | PRecord (xps, flex) =>
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186 let
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187 val pps = map (fn (x, p) => box [string x, space, string "=", space, p_pat p]) xps
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188 in
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189 box [string "{",
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190 p_list_sep (box [string ",", space]) (fn x => x)
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191 (if flex then
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192 pps @ [string "..."]
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193 else
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194 pps),
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195 string "}"]
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196 end
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197
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198 and p_pat x = p_pat' false x
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199
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200 fun p_exp' par (e, _) =
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201 case e of
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202 EAnnot (e, t) => box [string "(",
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203 p_exp e,
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204 space,
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205 string ":",
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206 space,
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207 p_con t,
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208 string ")"]
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209
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210 | EPrim p => Prim.p_t p
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211 | EVar (ss, s) => p_list_sep (string ".") string (ss @ [s])
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212 | EApp (e1, e2) => parenIf par (box [p_exp e1,
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213 space,
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214 p_exp' true e2])
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215 | EAbs (x, NONE, e) => parenIf par (box [string "fn",
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216 space,
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217 string x,
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218 space,
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219 string "=>",
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220 space,
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221 p_exp e])
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222 | EAbs (x, SOME t, e) => parenIf par (box [string "fn",
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223 space,
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224 string x,
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225 space,
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226 string ":",
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227 space,
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228 p_con t,
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229 space,
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230 string "=>",
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231 space,
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232 p_exp e])
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233 | ECApp (e, c) => parenIf par (box [p_exp e,
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234 space,
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235 string "[",
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236 p_con c,
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237 string "]"])
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238 | ECAbs (exp, x, k, e) => parenIf par (box [string "fn",
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239 space,
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240 string x,
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241 space,
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242 p_explicitness exp,
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243 space,
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244 p_kind k,
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245 space,
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246 string "=>",
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247 space,
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248 p_exp e])
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249 | EDisjoint (c1, c2, e) => parenIf par (box [p_con c1,
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250 space,
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251 string "~",
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252 space,
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253 p_con c2,
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254 space,
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255 string "=>",
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256 space,
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257 p_exp e])
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258
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259 | ERecord xes => box [string "{",
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260 p_list (fn (x, e) =>
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261 box [p_name x,
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262 space,
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263 string "=",
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264 space,
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265 p_exp e]) xes,
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266 string "}"]
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267 | EField (e, c) => box [p_exp' true e,
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268 string ".",
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269 p_con' true c]
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270 | ECut (e, c) => parenIf par (box [p_exp' true e,
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271 space,
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272 string "--",
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273 space,
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274 p_con' true c])
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275 | EFold => string "fold"
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276
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277 | ECase (e, pes) => parenIf par (box [string "case",
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278 space,
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279 p_exp e,
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280 space,
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281 string "of",
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282 space,
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283 p_list_sep (box [space, string "|", space])
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284 (fn (p, e) => box [p_pat p,
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285 space,
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286 string "=>",
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287 space,
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288 p_exp e]) pes])
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289
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290 | EWild => string "_"
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291
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292 and p_exp e = p_exp' false e
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293
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294 fun p_datatype (x, xs, cons) =
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295 box [string "datatype",
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296 space,
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297 string x,
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298 p_list_sep (box []) (fn x => box [space, string x]) xs,
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299 space,
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300 string "=",
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301 space,
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302 p_list_sep (box [space, string "|", space])
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303 (fn (x, NONE) => string x
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304 | (x, SOME t) => box [string x, space, string "of", space, p_con t])
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305 cons]
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306
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307 fun p_sgn_item (sgi, _) =
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308 case sgi of
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309 SgiConAbs (x, k) => box [string "con",
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310 space,
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311 string x,
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312 space,
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313 string "::",
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314 space,
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315 p_kind k]
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316 | SgiCon (x, NONE, c) => box [string "con",
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317 space,
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318 string x,
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319 space,
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320 string "=",
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321 space,
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322 p_con c]
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323 | SgiCon (x, SOME k, c) => box [string "con",
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324 space,
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325 string x,
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326 space,
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327 string "::",
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328 space,
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329 p_kind k,
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330 space,
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331 string "=",
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332 space,
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333 p_con c]
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334 | SgiDatatype x => p_datatype x
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335 | SgiDatatypeImp (x, ms, x') =>
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336 box [string "datatype",
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337 space,
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338 string x,
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339 space,
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340 string "=",
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341 space,
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342 string "datatype",
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343 space,
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344 p_list_sep (string ".") string (ms @ [x'])]
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345 | SgiVal (x, c) => box [string "val",
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346 space,
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347 string x,
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348 space,
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349 string ":",
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350 space,
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351 p_con c]
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352 | SgiStr (x, sgn) => box [string "structure",
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353 space,
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354 string x,
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355 space,
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356 string ":",
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357 space,
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358 p_sgn sgn]
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359 | SgiSgn (x, sgn) => box [string "signature",
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360 space,
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361 string x,
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362 space,
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363 string "=",
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364 space,
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365 p_sgn sgn]
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366 | SgiInclude sgn => box [string "include",
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367 space,
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368 p_sgn sgn]
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369 | SgiConstraint (c1, c2) => box [string "constraint",
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370 space,
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371 p_con c1,
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372 space,
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373 string "~",
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374 space,
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375 p_con c2]
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adamc@203
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376 | SgiTable (x, c) => box [string "table",
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377 space,
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adamc@203
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378 string x,
|
adamc@203
|
379 space,
|
adamc@203
|
380 string ":",
|
adamc@203
|
381 space,
|
adamc@203
|
382 p_con c]
|
adamc@338
|
383 | SgiSequence x => box [string "sequence",
|
adamc@338
|
384 space,
|
adamc@338
|
385 string x]
|
adamc@211
|
386 | SgiClassAbs x => box [string "class",
|
adamc@211
|
387 space,
|
adamc@211
|
388 string x]
|
adamc@211
|
389 | SgiClass (x, c) => box [string "class",
|
adamc@211
|
390 space,
|
adamc@211
|
391 string x,
|
adamc@211
|
392 space,
|
adamc@211
|
393 string "=",
|
adamc@211
|
394 space,
|
adamc@211
|
395 p_con c]
|
adamc@30
|
396
|
adamc@30
|
397 and p_sgn (sgn, _) =
|
adamc@30
|
398 case sgn of
|
adamc@30
|
399 SgnConst sgis => box [string "sig",
|
adamc@30
|
400 newline,
|
adamc@30
|
401 p_list_sep newline p_sgn_item sgis,
|
adamc@30
|
402 newline,
|
adamc@30
|
403 string "end"]
|
adamc@30
|
404 | SgnVar x => string x
|
adamc@40
|
405 | SgnFun (x, sgn, sgn') => box [string "functor",
|
adamc@40
|
406 space,
|
adamc@40
|
407 string "(",
|
adamc@40
|
408 string x,
|
adamc@40
|
409 space,
|
adamc@40
|
410 string ":",
|
adamc@40
|
411 p_sgn sgn,
|
adamc@40
|
412 string ")",
|
adamc@40
|
413 space,
|
adamc@40
|
414 string ":",
|
adamc@40
|
415 space,
|
adamc@40
|
416 p_sgn sgn']
|
adamc@42
|
417 | SgnWhere (sgn, x, c) => box [p_sgn sgn,
|
adamc@42
|
418 space,
|
adamc@42
|
419 string "where",
|
adamc@42
|
420 space,
|
adamc@42
|
421 string "con",
|
adamc@42
|
422 space,
|
adamc@42
|
423 string x,
|
adamc@42
|
424 space,
|
adamc@42
|
425 string "=",
|
adamc@42
|
426 space,
|
adamc@42
|
427 p_con c]
|
adamc@59
|
428 | SgnProj (m, ms, x) => p_list_sep (string ".") string (m :: ms @ [x])
|
adamc@59
|
429
|
adamc@42
|
430
|
adamc@123
|
431 fun p_vali (x, co, e) =
|
adamc@123
|
432 case co of
|
adamc@123
|
433 NONE => box [string x,
|
adamc@123
|
434 space,
|
adamc@123
|
435 string "=",
|
adamc@123
|
436 space,
|
adamc@123
|
437 p_exp e]
|
adamc@123
|
438 | SOME t => box [string x,
|
adamc@123
|
439 space,
|
adamc@123
|
440 string ":",
|
adamc@123
|
441 space,
|
adamc@123
|
442 p_con t,
|
adamc@123
|
443 space,
|
adamc@123
|
444 string "=",
|
adamc@123
|
445 space,
|
adamc@123
|
446 p_exp e]
|
adamc@123
|
447
|
adamc@1
|
448 fun p_decl ((d, _) : decl) =
|
adamc@1
|
449 case d of
|
adamc@1
|
450 DCon (x, NONE, c) => box [string "con",
|
adamc@1
|
451 space,
|
adamc@1
|
452 string x,
|
adamc@1
|
453 space,
|
adamc@1
|
454 string "=",
|
adamc@1
|
455 space,
|
adamc@1
|
456 p_con c]
|
adamc@1
|
457 | DCon (x, SOME k, c) => box [string "con",
|
adamc@1
|
458 space,
|
adamc@1
|
459 string x,
|
adamc@1
|
460 space,
|
adamc@1
|
461 string "::",
|
adamc@1
|
462 space,
|
adamc@1
|
463 p_kind k,
|
adamc@1
|
464 space,
|
adamc@1
|
465 string "=",
|
adamc@1
|
466 space,
|
adamc@1
|
467 p_con c]
|
adamc@156
|
468 | DDatatype x => p_datatype x
|
adamc@156
|
469 | DDatatypeImp (x, ms, x') =>
|
adamc@156
|
470 box [string "datatype",
|
adamc@156
|
471 space,
|
adamc@156
|
472 string x,
|
adamc@156
|
473 space,
|
adamc@156
|
474 string "=",
|
adamc@156
|
475 space,
|
adamc@156
|
476 string "datatype",
|
adamc@156
|
477 space,
|
adamc@156
|
478 p_list_sep (string ".") string (ms @ [x'])]
|
adamc@123
|
479 | DVal vi => box [string "val",
|
adamc@123
|
480 space,
|
adamc@123
|
481 p_vali vi]
|
adamc@123
|
482 | DValRec vis => box [string "val",
|
adamc@123
|
483 space,
|
adamc@123
|
484 string "rec",
|
adamc@123
|
485 space,
|
adamc@123
|
486 p_list_sep (box [newline, string "and", space]) p_vali vis]
|
adamc@1
|
487
|
adamc@30
|
488 | DSgn (x, sgn) => box [string "signature",
|
adamc@30
|
489 space,
|
adamc@30
|
490 string x,
|
adamc@30
|
491 space,
|
adamc@30
|
492 string "=",
|
adamc@30
|
493 space,
|
adamc@30
|
494 p_sgn sgn]
|
adamc@30
|
495 | DStr (x, NONE, str) => box [string "structure",
|
adamc@30
|
496 space,
|
adamc@30
|
497 string x,
|
adamc@30
|
498 space,
|
adamc@30
|
499 string "=",
|
adamc@30
|
500 space,
|
adamc@30
|
501 p_str str]
|
adamc@30
|
502 | DStr (x, SOME sgn, str) => box [string "structure",
|
adamc@30
|
503 space,
|
adamc@30
|
504 string x,
|
adamc@30
|
505 space,
|
adamc@30
|
506 string ":",
|
adamc@30
|
507 space,
|
adamc@30
|
508 p_sgn sgn,
|
adamc@30
|
509 space,
|
adamc@30
|
510 string "=",
|
adamc@30
|
511 space,
|
adamc@30
|
512 p_str str]
|
adamc@48
|
513 | DFfiStr (x, sgn) => box [string "extern",
|
adamc@48
|
514 space,
|
adamc@48
|
515 string "structure",
|
adamc@48
|
516 space,
|
adamc@48
|
517 string x,
|
adamc@48
|
518 space,
|
adamc@48
|
519 string ":",
|
adamc@48
|
520 space,
|
adamc@48
|
521 p_sgn sgn]
|
adamc@61
|
522 | DOpen (m, ms) => box [string "open",
|
adamc@61
|
523 space,
|
adamc@61
|
524 p_list_sep (string ".") string (m :: ms)]
|
adamc@88
|
525 | DConstraint (c1, c2) => box [string "constraint",
|
adamc@88
|
526 space,
|
adamc@88
|
527 p_con c1,
|
adamc@88
|
528 space,
|
adamc@88
|
529 string "~",
|
adamc@88
|
530 space,
|
adamc@88
|
531 p_con c2]
|
adamc@88
|
532 | DOpenConstraints (m, ms) => box [string "open",
|
adamc@88
|
533 space,
|
adamc@88
|
534 string "constraints",
|
adamc@88
|
535 space,
|
adamc@88
|
536 p_list_sep (string ".") string (m :: ms)]
|
adamc@30
|
537
|
adamc@109
|
538 | DExport str => box [string "export",
|
adamc@109
|
539 space,
|
adamc@109
|
540 p_str str]
|
adamc@203
|
541 | DTable (x, c) => box [string "table",
|
adamc@203
|
542 space,
|
adamc@203
|
543 string x,
|
adamc@203
|
544 space,
|
adamc@203
|
545 string ":",
|
adamc@203
|
546 space,
|
adamc@203
|
547 p_con c]
|
adamc@338
|
548 | DSequence x => box [string "sequence",
|
adamc@338
|
549 space,
|
adamc@338
|
550 string x]
|
adamc@211
|
551 | DClass (x, c) => box [string "class",
|
adamc@211
|
552 space,
|
adamc@211
|
553 string x,
|
adamc@211
|
554 space,
|
adamc@211
|
555 string "=",
|
adamc@211
|
556 space,
|
adamc@211
|
557 p_con c]
|
adamc@100
|
558
|
adamc@271
|
559 | DDatabase s => box [string "database",
|
adamc@271
|
560 space,
|
adamc@271
|
561 string s]
|
adamc@271
|
562
|
adamc@30
|
563 and p_str (str, _) =
|
adamc@30
|
564 case str of
|
adamc@30
|
565 StrConst ds => box [string "struct",
|
adamc@30
|
566 newline,
|
adamc@30
|
567 p_list_sep newline p_decl ds,
|
adamc@30
|
568 newline,
|
adamc@30
|
569 string "end"]
|
adamc@30
|
570 | StrVar x => string x
|
adamc@34
|
571 | StrProj (str, x) => box [p_str str,
|
adamc@34
|
572 string ".",
|
adamc@34
|
573 string x]
|
adamc@40
|
574 | StrFun (x, sgn, NONE, str) => box [string "functor",
|
adamc@40
|
575 space,
|
adamc@40
|
576 string "(",
|
adamc@40
|
577 string x,
|
adamc@40
|
578 space,
|
adamc@40
|
579 string ":",
|
adamc@40
|
580 p_sgn sgn,
|
adamc@40
|
581 string ")",
|
adamc@40
|
582 space,
|
adamc@40
|
583 string "=>",
|
adamc@40
|
584 space,
|
adamc@40
|
585 p_str str]
|
adamc@40
|
586 | StrFun (x, sgn, SOME sgn', str) => box [string "functor",
|
adamc@40
|
587 space,
|
adamc@40
|
588 string "(",
|
adamc@40
|
589 string x,
|
adamc@40
|
590 space,
|
adamc@40
|
591 string ":",
|
adamc@40
|
592 p_sgn sgn,
|
adamc@40
|
593 string ")",
|
adamc@40
|
594 space,
|
adamc@40
|
595 string ":",
|
adamc@40
|
596 space,
|
adamc@40
|
597 p_sgn sgn',
|
adamc@40
|
598 space,
|
adamc@40
|
599 string "=>",
|
adamc@40
|
600 space,
|
adamc@40
|
601 p_str str]
|
adamc@44
|
602 | StrApp (str1, str2) => box [p_str str1,
|
adamc@44
|
603 string "(",
|
adamc@44
|
604 p_str str2,
|
adamc@44
|
605 string ")"]
|
adamc@30
|
606
|
adamc@1
|
607 val p_file = p_list_sep newline p_decl
|
adamc@1
|
608
|
adamc@1
|
609 end
|