| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // FindFunction.cc --
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| 8 | //
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| 9 | // Author : Richard C. Bilson
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| 10 | // Created On : Mon May 18 07:44:20 2015
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| 11 | // Last Modified By : Rob Schluntz
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| 12 | // Last Modified On : Fri Feb 05 12:22:20 2016
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| 13 | // Update Count : 6
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| 14 | //
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| 15 |
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| 16 | #include "FindFunction.h"
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| 17 |
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| 18 | #include <utility> // for pair
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| 19 |
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| 20 | #include "Common/PassVisitor.h" // for PassVisitor
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| 21 | #include "Common/SemanticError.h" // for SemanticError
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| 22 | #include "GenPoly/ErasableScopedMap.h" // for ErasableScopedMap<>::iterator
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| 23 | #include "GenPoly/GenPoly.h" // for TyVarMap
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| 24 | #include "ScrubTyVars.h" // for ScrubTyVars
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| 25 | #include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl
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| 26 | #include "SynTree/Mutator.h" // for Mutator, mutateAll
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| 27 | #include "SynTree/Type.h" // for FunctionType, Type, Type::For...
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| 28 |
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| 29 | namespace GenPoly {
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| 30 | class FindFunction : public WithGuards, public WithVisitorRef<FindFunction>, public WithShortCircuiting {
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| 31 | public:
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| 32 | FindFunction( std::list< FunctionType* > &functions, const TyVarMap &tyVars, bool replaceMode, FindFunctionPredicate predicate );
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| 33 |
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| 34 | void premutate( FunctionType * functionType );
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| 35 | Type * postmutate( FunctionType * functionType );
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| 36 | void premutate( PointerType * pointerType );
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| 37 | private:
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| 38 | void handleForall( const Type::ForallList &forall );
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| 39 |
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| 40 | std::list< FunctionType* > &functions;
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| 41 | TyVarMap tyVars;
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| 42 | bool replaceMode;
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| 43 | FindFunctionPredicate predicate;
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| 44 | };
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| 45 |
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| 46 | void findFunction( Type *type, std::list< FunctionType* > &functions, const TyVarMap &tyVars, FindFunctionPredicate predicate ) {
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| 47 | PassVisitor<FindFunction> finder( functions, tyVars, false, predicate );
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| 48 | type->acceptMutator( finder );
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| 49 | }
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| 50 |
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| 51 | void findAndReplaceFunction( Type *&type, std::list< FunctionType* > &functions, const TyVarMap &tyVars, FindFunctionPredicate predicate ) {
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| 52 | PassVisitor<FindFunction> finder( functions, tyVars, true, predicate );
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| 53 | type = type->acceptMutator( finder );
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| 54 | }
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| 55 |
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| 56 | FindFunction::FindFunction( std::list< FunctionType* > &functions, const TyVarMap &tyVars, bool replaceMode, FindFunctionPredicate predicate )
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| 57 | : functions( functions ), tyVars( tyVars ), replaceMode( replaceMode ), predicate( predicate ) {
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| 58 | }
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| 59 |
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| 60 | void FindFunction::handleForall( const Type::ForallList &forall ) {
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| 61 | for ( const Declaration * td : forall ) {
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| 62 | TyVarMap::iterator var = tyVars.find( td->name );
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| 63 | if ( var != tyVars.end() ) {
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| 64 | tyVars.erase( var->first );
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| 65 | } // if
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| 66 | } // for
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| 67 | }
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| 68 |
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| 69 | void FindFunction::premutate( FunctionType * functionType ) {
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| 70 | visit_children = false;
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| 71 | GuardScope( tyVars );
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| 72 | handleForall( functionType->get_forall() );
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| 73 | mutateAll( functionType->get_returnVals(), *visitor );
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| 74 | }
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| 75 |
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| 76 | Type * FindFunction::postmutate( FunctionType * functionType ) {
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| 77 | Type *ret = functionType;
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| 78 | if ( predicate( functionType, tyVars ) ) {
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| 79 | functions.push_back( functionType );
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| 80 | if ( replaceMode ) {
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| 81 | // replace type parameters in function type with void*
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| 82 | ret = ScrubTyVars::scrub( functionType->clone(), tyVars );
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| 83 | } // if
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| 84 | } // if
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| 85 | return ret;
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| 86 | }
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| 87 |
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| 88 | void FindFunction::premutate( PointerType * pointerType ) {
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| 89 | GuardScope( tyVars );
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| 90 | handleForall( pointerType->get_forall() );
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| 91 | }
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| 92 | } // namespace GenPoly
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| 93 |
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| 94 | // Local Variables: //
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| 95 | // tab-width: 4 //
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| 96 | // mode: c++ //
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| 97 | // compile-command: "make install" //
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| 98 | // End: //
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