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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 Source = struct
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29
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30 type 'a located = 'a ErrorMsg.located
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31
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32 datatype kind' =
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33 KType
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34 | KArrow of kind * kind
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35 | KName
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36 | KRecord of kind
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37 | KUnit
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38 | KTuple of kind list
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39 | KWild
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40
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41 withtype kind = kind' located
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42
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43 datatype explicitness =
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44 Explicit
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45 | Implicit
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46
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47 datatype con' =
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48 CAnnot of con * kind
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49
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50 | TFun of con * con
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51 | TCFun of explicitness * string * kind * con
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52 | TRecord of con
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53
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54 | CVar of string list * string
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55 | CApp of con * con
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56 | CAbs of string * kind option * con
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57 | CDisjoint of con * con * con
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58
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59 | CName of string
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60
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61 | CRecord of (con * con) list
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62 | CConcat of con * con
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63 | CFold
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64
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65 | CUnit
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66
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67 | CTuple of con list
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68 | CProj of con * int
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69
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70 | CWild of kind
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71
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72 withtype con = con' located
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73
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74 datatype sgn_item' =
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75 SgiConAbs of string * kind
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76 | SgiCon of string * kind option * con
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77 | SgiDatatype of string * string list * (string * con option) list
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78 | SgiDatatypeImp of string * string list * string
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79 | SgiVal of string * con
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80 | SgiStr of string * sgn
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81 | SgiSgn of string * sgn
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82 | SgiInclude of sgn
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83 | SgiConstraint of con * con
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84 | SgiTable of string * con
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85 | SgiSequence of string
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86 | SgiClassAbs of string
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87 | SgiClass of string * con
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88
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89 and sgn' =
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90 SgnConst of sgn_item list
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91 | SgnVar of string
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92 | SgnFun of string * sgn * sgn
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93 | SgnWhere of sgn * string * con
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94 | SgnProj of string * string list * string
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95
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96 withtype sgn_item = sgn_item' located
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97 and sgn = sgn' located
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98
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99 datatype pat' =
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100 PWild
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101 | PVar of string
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102 | PPrim of Prim.t
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103 | PCon of string list * string * pat option
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104 | PRecord of (string * pat) list * bool
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105
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106 withtype pat = pat' located
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107
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108 datatype inference =
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109 Infer
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110 | DontInfer
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111 | TypesOnly
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112
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113 datatype exp' =
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114 EAnnot of exp * con
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115
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116 | EPrim of Prim.t
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117 | EVar of string list * string * inference
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118 | EApp of exp * exp
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119 | EAbs of string * con option * exp
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120 | ECApp of exp * con
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121 | ECAbs of explicitness * string * kind * exp
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122 | EDisjoint of con * con * exp
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123
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124 | ERecord of (con * exp) list
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125 | EField of exp * con
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126 | EWith of exp * con * exp
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127 | ECut of exp * con
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128 | EFold
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129
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130 | EWild
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131
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132 | ECase of exp * (pat * exp) list
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133
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134 withtype exp = exp' located
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135
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136 datatype decl' =
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137 DCon of string * kind option * con
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138 | DDatatype of string * string list * (string * con option) list
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139 | DDatatypeImp of string * string list * string
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140 | DVal of string * con option * exp
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141 | DValRec of (string * con option * exp) list
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142 | DSgn of string * sgn
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143 | DStr of string * sgn option * str
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144 | DFfiStr of string * sgn
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145 | DOpen of string * string list
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146 | DConstraint of con * con
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147 | DOpenConstraints of string * string list
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148 | DExport of str
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149 | DTable of string * con
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150 | DSequence of string
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151 | DClass of string * con
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152 | DDatabase of string
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153
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154 and str' =
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155 StrConst of decl list
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156 | StrVar of string
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157 | StrProj of str * string
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158 | StrFun of string * sgn * sgn option * str
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159 | StrApp of str * str
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160
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161 withtype decl = decl' located
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162 and str = str' located
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163
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164 type file = decl list
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165
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166 end
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