| 1 | /* |
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| 2 | * This file is part of the Cforall project |
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| 3 | * |
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| 4 | * $Id: Unify.h,v 1.4 2005/08/29 20:14:16 rcbilson Exp $ |
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| 5 | * |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef UNIFY_H |
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| 9 | #define UNIFY_H |
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| 10 | |
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| 11 | #include <map> |
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| 12 | #include <list> |
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| 13 | #include "SynTree/SynTree.h" |
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| 14 | #include "SynTree/Type.h" |
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| 15 | #include "SynTree/Declaration.h" |
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| 16 | #include "SymTab/Indexer.h" |
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| 17 | #include "TypeEnvironment.h" |
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| 18 | #include "utility.h" |
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| 19 | |
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| 20 | namespace ResolvExpr { |
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| 21 | |
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| 22 | bool unify( Type *type1, Type *type2, TypeEnvironment &env, AssertionSet &needAssertions, AssertionSet &haveAssertions, OpenVarSet &openVars, const SymTab::Indexer &indexer ); |
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| 23 | bool unify( Type *type1, Type *type2, TypeEnvironment &env, AssertionSet &needAssertions, AssertionSet &haveAssertions, OpenVarSet &openVars, const SymTab::Indexer &indexer, Type *&commonType ); |
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| 24 | bool unifyExact( Type *type1, Type *type2, TypeEnvironment &env, AssertionSet &needAssertions, AssertionSet &haveAssertions, OpenVarSet &openVars, const SymTab::Indexer &indexer ); |
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| 25 | |
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| 26 | template< typename Iterator1, typename Iterator2 > |
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| 27 | bool |
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| 28 | unifyList( Iterator1 list1Begin, Iterator1 list1End, Iterator2 list2Begin, Iterator2 list2End, TypeEnvironment &env, AssertionSet &needAssertions, AssertionSet &haveAssertions, OpenVarSet &openVars, const SymTab::Indexer &indexer, std::list< Type* > &commonTypes ) { |
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| 29 | for( ; list1Begin != list1End && list2Begin != list2End; ++list1Begin, ++list2Begin ) { |
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| 30 | Type *commonType = 0; |
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| 31 | if( !unify( *list1Begin, *list2Begin, env, needAssertions, haveAssertions, openVars, indexer, commonType ) ) { |
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| 32 | return false; |
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| 33 | } |
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| 34 | commonTypes.push_back( commonType ); |
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| 35 | } |
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| 36 | if( list1Begin != list1End || list2Begin != list2End ) { |
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| 37 | return false; |
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| 38 | } else { |
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| 39 | return true; |
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| 40 | } |
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| 41 | } |
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| 42 | |
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| 43 | template< typename Iterator1, typename Iterator2 > |
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| 44 | bool |
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| 45 | unifyList( Iterator1 list1Begin, Iterator1 list1End, Iterator2 list2Begin, Iterator2 list2End, TypeEnvironment &env, AssertionSet &needAssertions, AssertionSet &haveAssertions, OpenVarSet &openVars, const SymTab::Indexer &indexer ) { |
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| 46 | std::list< Type* > commonTypes; |
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| 47 | if( unifyList( list1Begin, list1End, list2Begin, list2End, env, needAssertions, haveAssertions, openVars, indexer, commonTypes ) ) { |
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| 48 | deleteAll( commonTypes ); |
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| 49 | return true; |
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| 50 | } else { |
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| 51 | return false; |
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| 52 | } |
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| 53 | } |
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| 54 | |
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| 55 | } // namespace ResolvExpr |
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| 56 | |
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| 57 | #endif /* #ifndef UNIFY_H */ |
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