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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 | KWild
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38
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39 withtype kind = kind' located
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40
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41 datatype explicitness =
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42 Explicit
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43 | Implicit
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44
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45 datatype con' =
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46 CAnnot of con * kind
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47
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48 | TFun of con * con
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49 | TCFun of explicitness * string * kind * con
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50 | TRecord of con
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51
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52 | CVar of string list * string
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53 | CApp of con * con
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54 | CAbs of string * kind * con
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55
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56 | CName of string
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57
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58 | CRecord of (con * con) list
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59 | CConcat of con * con
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60
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61 | CWild of kind
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62
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63 withtype con = con' located
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64
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65 datatype sgn_item' =
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66 SgiConAbs of string * kind
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67 | SgiCon of string * kind option * con
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68 | SgiVal of string * con
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69 | SgiStr of string * sgn
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70
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71 and sgn' =
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72 SgnConst of sgn_item list
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73 | SgnVar of string
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74 | SgnFun of string * sgn * sgn
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75
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76 withtype sgn_item = sgn_item' located
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77 and sgn = sgn' located
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78
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79 datatype exp' =
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80 EAnnot of exp * con
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81
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82 | EPrim of Prim.t
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83 | EVar of string list * string
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84 | EApp of exp * exp
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85 | EAbs of string * con option * exp
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86 | ECApp of exp * con
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87 | ECAbs of explicitness * string * kind * exp
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88
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89 | ERecord of (con * exp) list
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90 | EField of exp * con
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91
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92 withtype exp = exp' located
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93
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94 datatype decl' =
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95 DCon of string * kind option * con
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96 | DVal of string * con option * exp
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97 | DSgn of string * sgn
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98 | DStr of string * sgn option * str
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99
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100 and str' =
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101 StrConst of decl list
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102 | StrVar of string
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103 | StrProj of str * string
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104 | StrFun of string * sgn * sgn option * str
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105
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106 withtype decl = decl' located
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107 and str = str' located
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108
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109 type file = decl list
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110
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111 end
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