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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 Corify :> CORIFY = struct
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29
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30 structure EM = ErrorMsg
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31 structure L = Elab
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32 structure L' = Core
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33
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34 fun corifyKind (k, loc) =
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35 case k of
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36 L.KType => (L'.KType, loc)
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37 | L.KArrow (k1, k2) => (L'.KArrow (corifyKind k1, corifyKind k2), loc)
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38 | L.KName => (L'.KName, loc)
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39 | L.KRecord k => (L'.KRecord (corifyKind k), loc)
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40
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41 | L.KError => raise Fail ("corifyKind: KError at " ^ EM.spanToString loc)
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42 | L.KUnif (_, ref (SOME k)) => corifyKind k
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43 | L.KUnif _ => raise Fail ("corifyKind: KUnif at " ^ EM.spanToString loc)
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44
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45 fun corifyCon (c, loc) =
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46 case c of
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47 L.TFun (t1, t2) => (L'.TFun (corifyCon t1, corifyCon t2), loc)
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48 | L.TCFun (_, x, k, t) => (L'.TCFun (x, corifyKind k, corifyCon t), loc)
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49 | L.TRecord c => (L'.TRecord (corifyCon c), loc)
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50
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51 | L.CRel n => (L'.CRel n, loc)
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52 | L.CNamed n => (L'.CNamed n, loc)
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53 | L.CModProj _ => raise Fail "Corify CModProj"
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54
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55 | L.CApp (c1, c2) => (L'.CApp (corifyCon c1, corifyCon c2), loc)
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56 | L.CAbs (x, k, c) => (L'.CAbs (x, corifyKind k, corifyCon c), loc)
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57
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58 | L.CName s => (L'.CName s, loc)
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59
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60 | L.CRecord (k, xcs) => (L'.CRecord (corifyKind k, map (fn (c1, c2) => (corifyCon c1, corifyCon c2)) xcs), loc)
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61 | L.CConcat (c1, c2) => (L'.CConcat (corifyCon c1, corifyCon c2), loc)
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62
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63 | L.CError => raise Fail ("corifyCon: CError at " ^ EM.spanToString loc)
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64 | L.CUnif (_, _, ref (SOME c)) => corifyCon c
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65 | L.CUnif _ => raise Fail ("corifyCon: CUnif at " ^ EM.spanToString loc)
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66
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67 fun corifyExp (e, loc) =
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68 case e of
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69 L.EPrim p => (L'.EPrim p, loc)
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70 | L.ERel n => (L'.ERel n, loc)
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71 | L.ENamed n => (L'.ENamed n, loc)
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72 | L.EModProj _ => raise Fail "Corify EModProj"
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73 | L.EApp (e1, e2) => (L'.EApp (corifyExp e1, corifyExp e2), loc)
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74 | L.EAbs (x, dom, ran, e1) => (L'.EAbs (x, corifyCon dom, corifyCon ran, corifyExp e1), loc)
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75 | L.ECApp (e1, c) => (L'.ECApp (corifyExp e1, corifyCon c), loc)
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76 | L.ECAbs (_, x, k, e1) => (L'.ECAbs (x, corifyKind k, corifyExp e1), loc)
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77
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78 | L.ERecord xes => (L'.ERecord (map (fn (c, e, t) => (corifyCon c, corifyExp e, corifyCon t)) xes), loc)
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79 | L.EField (e1, c, {field, rest}) => (L'.EField (corifyExp e1, corifyCon c,
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80 {field = corifyCon field, rest = corifyCon rest}), loc)
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81
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82 | L.EError => raise Fail ("corifyExp: EError at " ^ EM.spanToString loc)
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83
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84 fun corifyDecl (d, loc : EM.span) =
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85 case d of
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86 L.DCon (x, n, k, c) => (L'.DCon (x, n, corifyKind k, corifyCon c), loc)
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87 | L.DVal (x, n, t, e) => (L'.DVal (x, n, corifyCon t, corifyExp e), loc)
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88
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89 | L.DSgn _ => raise Fail "Not ready to corify signature"
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90 | L.DStr _ => raise Fail "Not ready to corify structure"
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91
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92 val corify = map corifyDecl
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93
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94 end
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