| 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 | // TypeEnvironment.h --
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| 8 | //
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| 9 | // Author : Richard C. Bilson
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| 10 | // Created On : Sun May 17 12:24:58 2015
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Sun May 17 12:26:52 2015
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| 13 | // Update Count : 2
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| 14 | //
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| 15 |
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| 16 | #ifndef TYPEENVIRONMENT_H
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| 17 | #define TYPEENVIRONMENT_H
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| 18 |
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| 19 | #include <string>
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| 20 | #include <set>
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| 21 | #include <list>
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| 22 | #include <iostream>
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| 23 |
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| 24 | #include "SynTree/SynTree.h"
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| 25 | #include "SynTree/Type.h"
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| 26 | #include "SynTree/TypeSubstitution.h"
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| 27 | #include "SynTree/Declaration.h"
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| 28 |
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| 29 | namespace ResolvExpr {
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| 30 | struct AssertCompare {
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| 31 | bool operator()( DeclarationWithType * d1, DeclarationWithType * d2 ) const;
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| 32 | };
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| 33 | struct AssertionSetValue {
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| 34 | bool isUsed;
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| 35 | // chain of Unique IDs of the assertion declarations. The first ID in the chain is the ID of an assertion on the current type,
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| 36 | // with each successive ID being the ID of an assertion pulled in by the previous ID. The last ID in the chain is
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| 37 | // the ID of the assertion that pulled in the current assertion.
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| 38 | std::list< UniqueId > idChain;
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| 39 | };
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| 40 | typedef std::map< DeclarationWithType*, AssertionSetValue, AssertCompare > AssertionSet;
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| 41 | typedef std::map< std::string, TypeDecl::Data > OpenVarSet;
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| 42 |
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| 43 | void printAssertionSet( const AssertionSet &, std::ostream &, int indent = 0 );
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| 44 | void printOpenVarSet( const OpenVarSet &, std::ostream &, int indent = 0 );
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| 45 |
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| 46 | struct EqvClass {
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| 47 | std::set< std::string > vars;
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| 48 | Type *type;
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| 49 | bool allowWidening;
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| 50 | TypeDecl::Data data;
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| 51 |
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| 52 | void initialize( const EqvClass &src, EqvClass &dest );
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| 53 | EqvClass();
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| 54 | EqvClass( const EqvClass &other );
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| 55 | EqvClass &operator=( const EqvClass &other );
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| 56 | ~EqvClass();
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| 57 | void print( std::ostream &os, int indent = 0 ) const;
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| 58 | };
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| 59 |
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| 60 | class TypeEnvironment {
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| 61 | public:
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| 62 | bool lookup( const std::string &var, EqvClass &eqvClass ) const;
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| 63 | void add( const EqvClass &eqvClass );
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| 64 | void add( const Type::ForallList &tyDecls );
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| 65 | template< typename SynTreeClass > int apply( SynTreeClass *&type ) const;
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| 66 | template< typename SynTreeClass > int applyFree( SynTreeClass *&type ) const;
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| 67 | void makeSubstitution( TypeSubstitution &result ) const;
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| 68 | bool isEmpty() const { return env.empty(); }
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| 69 | void print( std::ostream &os, int indent = 0 ) const;
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| 70 | void combine( const TypeEnvironment &second, Type *(*combineFunc)( Type*, Type* ) );
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| 71 | void simpleCombine( const TypeEnvironment &second );
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| 72 | void extractOpenVars( OpenVarSet &openVars ) const;
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| 73 | TypeEnvironment *clone() const { return new TypeEnvironment( *this ); }
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| 74 |
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| 75 | typedef std::list< EqvClass >::iterator iterator;
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| 76 | iterator begin() { return env.begin(); }
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| 77 | iterator end() { return env.end(); }
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| 78 | typedef std::list< EqvClass >::const_iterator const_iterator;
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| 79 | const_iterator begin() const { return env.begin(); }
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| 80 | const_iterator end() const { return env.end(); }
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| 81 | private:
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| 82 | std::list< EqvClass > env;
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| 83 | std::list< EqvClass >::iterator internal_lookup( const std::string &var );
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| 84 | };
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| 85 |
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| 86 | template< typename SynTreeClass >
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| 87 | int TypeEnvironment::apply( SynTreeClass *&type ) const {
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| 88 | TypeSubstitution sub;
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| 89 | makeSubstitution( sub );
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| 90 | return sub.apply( type );
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| 91 | }
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| 92 |
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| 93 | template< typename SynTreeClass >
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| 94 | int TypeEnvironment::applyFree( SynTreeClass *&type ) const {
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| 95 | TypeSubstitution sub;
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| 96 | makeSubstitution( sub );
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| 97 | return sub.applyFree( type );
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| 98 | }
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| 99 | } // namespace ResolvExpr
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| 100 |
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| 101 | #endif // TYPEENVIRONMENT_H */
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| 102 |
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| 103 | // Local Variables: //
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| 104 | // tab-width: 4 //
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| 105 | // mode: c++ //
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| 106 | // compile-command: "make install" //
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| 107 | // End: //
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