[51587aa] | 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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[540de412] | 7 | // GenPoly.cc -- |
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[51587aa] | 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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[ca35c51] | 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Wed Jun 29 21:45:53 2016 |
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| 13 | // Update Count : 14 |
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[51587aa] | 14 | // |
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[51b7345] | 15 | |
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| 16 | #include "GenPoly.h" |
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[ffad73a] | 17 | |
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[08fc48f] | 18 | #include <cassert> // for assertf, assert |
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| 19 | #include <iostream> // for operator<<, ostream, basic_os... |
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| 20 | #include <iterator> // for back_insert_iterator, back_in... |
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| 21 | #include <list> // for list, _List_iterator, list<>:... |
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| 22 | #include <typeindex> // for type_index |
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| 23 | #include <utility> // for pair |
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| 24 | #include <vector> // for vector |
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| 25 | |
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| 26 | #include "GenPoly/ErasableScopedMap.h" // for ErasableScopedMap<>::const_it... |
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| 27 | #include "ResolvExpr/typeops.h" // for flatten |
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| 28 | #include "SynTree/Constant.h" // for Constant |
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| 29 | #include "SynTree/Expression.h" // for Expression, TypeExpr, Constan... |
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| 30 | #include "SynTree/Type.h" // for Type, StructInstType, UnionIn... |
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| 31 | #include "SynTree/TypeSubstitution.h" // for TypeSubstitution |
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[51b7345] | 32 | |
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[b1a6d6b] | 33 | using namespace std; |
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[51b7345] | 34 | |
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| 35 | namespace GenPoly { |
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[ffad73a] | 36 | namespace { |
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[0f889a77] | 37 | /// Checks a parameter list for polymorphic parameters; will substitute according to env if present |
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| 38 | bool hasPolyParams( std::list< Expression* >& params, const TypeSubstitution *env ) { |
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| 39 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
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| 40 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
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[7350ff97] | 41 | assertf(paramType, "Aggregate parameters should be type expressions"); |
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[0f889a77] | 42 | if ( isPolyType( paramType->get_type(), env ) ) return true; |
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| 43 | } |
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| 44 | return false; |
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| 45 | } |
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| 46 | |
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| 47 | /// Checks a parameter list for polymorphic parameters from tyVars; will substitute according to env if present |
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[ffad73a] | 48 | bool hasPolyParams( std::list< Expression* >& params, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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| 49 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
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| 50 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
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[5a3ac84] | 51 | assertf(paramType, "Aggregate parameters should be type expressions"); |
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[ffad73a] | 52 | if ( isPolyType( paramType->get_type(), tyVars, env ) ) return true; |
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| 53 | } |
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| 54 | return false; |
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| 55 | } |
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[3bb195cb] | 56 | |
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| 57 | /// Checks a parameter list for dynamic-layout parameters from tyVars; will substitute according to env if present |
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| 58 | bool hasDynParams( std::list< Expression* >& params, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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| 59 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
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| 60 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
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[5a3ac84] | 61 | assertf(paramType, "Aggregate parameters should be type expressions"); |
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[3bb195cb] | 62 | if ( isDynType( paramType->get_type(), tyVars, env ) ) return true; |
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| 63 | } |
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| 64 | return false; |
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| 65 | } |
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[5a3ac84] | 66 | |
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| 67 | /// Checks a parameter list for inclusion of polymorphic parameters; will substitute according to env if present |
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| 68 | bool includesPolyParams( std::list< Expression* >& params, const TypeSubstitution *env ) { |
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| 69 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
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| 70 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
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| 71 | assertf(paramType, "Aggregate parameters should be type expressions"); |
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| 72 | if ( includesPolyType( paramType->get_type(), env ) ) return true; |
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| 73 | } |
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| 74 | return false; |
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| 75 | } |
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| 76 | |
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| 77 | /// Checks a parameter list for inclusion of polymorphic parameters from tyVars; will substitute according to env if present |
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| 78 | bool includesPolyParams( std::list< Expression* >& params, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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| 79 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
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| 80 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
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| 81 | assertf(paramType, "Aggregate parameters should be type expressions"); |
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| 82 | if ( includesPolyType( paramType->get_type(), tyVars, env ) ) return true; |
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| 83 | } |
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| 84 | return false; |
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| 85 | } |
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[c2ad3c9] | 86 | } |
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[83de11e] | 87 | |
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[c2ad3c9] | 88 | Type* replaceTypeInst( Type* type, const TypeSubstitution* env ) { |
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| 89 | if ( ! env ) return type; |
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| 90 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType* >( type ) ) { |
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| 91 | Type *newType = env->lookup( typeInst->get_name() ); |
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| 92 | if ( newType ) return newType; |
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[e24955a] | 93 | } |
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[c2ad3c9] | 94 | return type; |
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[ffad73a] | 95 | } |
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[0f889a77] | 96 | |
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| 97 | Type *isPolyType( Type *type, const TypeSubstitution *env ) { |
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[e24955a] | 98 | type = replaceTypeInst( type, env ); |
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[83de11e] | 99 | |
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[ca35c51] | 100 | if ( dynamic_cast< TypeInstType * >( type ) ) { |
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[0f889a77] | 101 | return type; |
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| 102 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
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| 103 | if ( hasPolyParams( structType->get_parameters(), env ) ) return type; |
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| 104 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
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| 105 | if ( hasPolyParams( unionType->get_parameters(), env ) ) return type; |
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| 106 | } |
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| 107 | return 0; |
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| 108 | } |
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[540de412] | 109 | |
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[ffad73a] | 110 | Type *isPolyType( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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[e24955a] | 111 | type = replaceTypeInst( type, env ); |
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[83de11e] | 112 | |
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[e56cfdb0] | 113 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
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[ffad73a] | 114 | if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { |
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| 115 | return type; |
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[0f889a77] | 116 | } |
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[ffad73a] | 117 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
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| 118 | if ( hasPolyParams( structType->get_parameters(), tyVars, env ) ) return type; |
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| 119 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
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| 120 | if ( hasPolyParams( unionType->get_parameters(), tyVars, env ) ) return type; |
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| 121 | } |
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| 122 | return 0; |
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[01aeade] | 123 | } |
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[b1a6d6b] | 124 | |
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[33a7b6d] | 125 | ReferenceToType *isDynType( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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[3bb195cb] | 126 | type = replaceTypeInst( type, env ); |
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| 127 | |
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| 128 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
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| 129 | auto var = tyVars.find( typeInst->get_name() ); |
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[2c57025] | 130 | if ( var != tyVars.end() && var->second.isComplete ) { |
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[33a7b6d] | 131 | return typeInst; |
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[3bb195cb] | 132 | } |
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| 133 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
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[33a7b6d] | 134 | if ( hasDynParams( structType->get_parameters(), tyVars, env ) ) return structType; |
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[3bb195cb] | 135 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
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[33a7b6d] | 136 | if ( hasDynParams( unionType->get_parameters(), tyVars, env ) ) return unionType; |
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[3bb195cb] | 137 | } |
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| 138 | return 0; |
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| 139 | } |
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| 140 | |
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| 141 | ReferenceToType *isDynRet( FunctionType *function, const TyVarMap &forallTypes ) { |
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| 142 | if ( function->get_returnVals().empty() ) return 0; |
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[8c49c0e] | 143 | |
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[3bb195cb] | 144 | return (ReferenceToType*)isDynType( function->get_returnVals().front()->get_type(), forallTypes ); |
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| 145 | } |
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| 146 | |
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| 147 | ReferenceToType *isDynRet( FunctionType *function ) { |
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| 148 | if ( function->get_returnVals().empty() ) return 0; |
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| 149 | |
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[2c57025] | 150 | TyVarMap forallTypes( TypeDecl::Data{} ); |
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[3bb195cb] | 151 | makeTyVarMap( function, forallTypes ); |
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| 152 | return (ReferenceToType*)isDynType( function->get_returnVals().front()->get_type(), forallTypes ); |
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| 153 | } |
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| 154 | |
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| 155 | bool needsAdapter( FunctionType *adaptee, const TyVarMap &tyVars ) { |
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| 156 | // if ( ! adaptee->get_returnVals().empty() && isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
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| 157 | // return true; |
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| 158 | // } // if |
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| 159 | if ( isDynRet( adaptee, tyVars ) ) return true; |
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[8c49c0e] | 160 | |
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[3bb195cb] | 161 | for ( std::list< DeclarationWithType* >::const_iterator innerArg = adaptee->get_parameters().begin(); innerArg != adaptee->get_parameters().end(); ++innerArg ) { |
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| 162 | // if ( isPolyType( (*innerArg)->get_type(), tyVars ) ) { |
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| 163 | if ( isDynType( (*innerArg)->get_type(), tyVars ) ) { |
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| 164 | return true; |
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| 165 | } // if |
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| 166 | } // for |
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| 167 | return false; |
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| 168 | } |
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| 169 | |
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[0f889a77] | 170 | Type *isPolyPtr( Type *type, const TypeSubstitution *env ) { |
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[e24955a] | 171 | type = replaceTypeInst( type, env ); |
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[83de11e] | 172 | |
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[0f889a77] | 173 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
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| 174 | return isPolyType( ptr->get_base(), env ); |
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[e24955a] | 175 | } |
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[0f889a77] | 176 | return 0; |
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| 177 | } |
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[540de412] | 178 | |
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[ffad73a] | 179 | Type *isPolyPtr( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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[e24955a] | 180 | type = replaceTypeInst( type, env ); |
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[83de11e] | 181 | |
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[ffad73a] | 182 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
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| 183 | return isPolyType( ptr->get_base(), tyVars, env ); |
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[e24955a] | 184 | } |
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[ffad73a] | 185 | return 0; |
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[bdf1954] | 186 | } |
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| 187 | |
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[8488c715] | 188 | Type * hasPolyBase( Type *type, int *levels, const TypeSubstitution *env ) { |
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| 189 | int dummy; |
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| 190 | if ( ! levels ) { levels = &dummy; } |
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| 191 | *levels = 0; |
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| 192 | |
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| 193 | while ( true ) { |
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[e24955a] | 194 | type = replaceTypeInst( type, env ); |
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[83de11e] | 195 | |
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[8488c715] | 196 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
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| 197 | type = ptr->get_base(); |
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| 198 | ++(*levels); |
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| 199 | } else break; |
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[05d47278] | 200 | } |
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| 201 | |
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| 202 | return isPolyType( type, env ); |
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| 203 | } |
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[540de412] | 204 | |
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[8488c715] | 205 | Type * hasPolyBase( Type *type, const TyVarMap &tyVars, int *levels, const TypeSubstitution *env ) { |
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| 206 | int dummy; |
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| 207 | if ( ! levels ) { levels = &dummy; } |
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| 208 | *levels = 0; |
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| 209 | |
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| 210 | while ( true ) { |
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[e24955a] | 211 | type = replaceTypeInst( type, env ); |
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[83de11e] | 212 | |
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[8488c715] | 213 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { |
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| 214 | type = ptr->get_base(); |
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| 215 | ++(*levels); |
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| 216 | } else break; |
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[05d47278] | 217 | } |
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| 218 | |
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| 219 | return isPolyType( type, tyVars, env ); |
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| 220 | } |
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| 221 | |
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[5a3ac84] | 222 | bool includesPolyType( Type *type, const TypeSubstitution *env ) { |
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| 223 | type = replaceTypeInst( type, env ); |
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| 224 | |
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| 225 | if ( dynamic_cast< TypeInstType * >( type ) ) { |
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| 226 | return true; |
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| 227 | } else if ( PointerType *pointerType = dynamic_cast< PointerType* >( type ) ) { |
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| 228 | if ( includesPolyType( pointerType->get_base(), env ) ) return true; |
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| 229 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
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| 230 | if ( includesPolyParams( structType->get_parameters(), env ) ) return true; |
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| 231 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
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| 232 | if ( includesPolyParams( unionType->get_parameters(), env ) ) return true; |
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| 233 | } |
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| 234 | return false; |
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| 235 | } |
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| 236 | |
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| 237 | bool includesPolyType( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { |
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| 238 | type = replaceTypeInst( type, env ); |
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| 239 | |
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| 240 | if ( TypeInstType *typeInstType = dynamic_cast< TypeInstType * >( type ) ) { |
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| 241 | if ( tyVars.find( typeInstType->get_name() ) != tyVars.end() ) { |
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| 242 | return true; |
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| 243 | } |
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| 244 | } else if ( PointerType *pointerType = dynamic_cast< PointerType* >( type ) ) { |
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| 245 | if ( includesPolyType( pointerType->get_base(), tyVars, env ) ) return true; |
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| 246 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
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| 247 | if ( includesPolyParams( structType->get_parameters(), tyVars, env ) ) return true; |
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| 248 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
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| 249 | if ( includesPolyParams( unionType->get_parameters(), tyVars, env ) ) return true; |
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| 250 | } |
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| 251 | return false; |
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| 252 | } |
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| 253 | |
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[7754cde] | 254 | FunctionType * getFunctionType( Type *ty ) { |
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| 255 | PointerType *ptrType; |
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| 256 | if ( ( ptrType = dynamic_cast< PointerType* >( ty ) ) ) { |
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| 257 | return dynamic_cast< FunctionType* >( ptrType->get_base() ); // pointer if FunctionType, NULL otherwise |
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| 258 | } else { |
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| 259 | return dynamic_cast< FunctionType* >( ty ); // pointer if FunctionType, NULL otherwise |
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| 260 | } |
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| 261 | } |
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| 262 | |
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[8488c715] | 263 | VariableExpr * getBaseVar( Expression *expr, int *levels ) { |
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| 264 | int dummy; |
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| 265 | if ( ! levels ) { levels = &dummy; } |
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| 266 | *levels = 0; |
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| 267 | |
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| 268 | while ( true ) { |
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| 269 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( expr ) ) { |
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| 270 | return varExpr; |
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[d9f1b2d] | 271 | } else if ( MemberExpr *memberExpr = dynamic_cast< MemberExpr* >( expr ) ) { |
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| 272 | expr = memberExpr->get_aggregate(); |
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[8488c715] | 273 | } else if ( AddressExpr *addressExpr = dynamic_cast< AddressExpr* >( expr ) ) { |
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| 274 | expr = addressExpr->get_arg(); |
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| 275 | } else if ( UntypedExpr *untypedExpr = dynamic_cast< UntypedExpr* >( expr ) ) { |
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| 276 | // look for compiler-inserted dereference operator |
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| 277 | NameExpr *fn = dynamic_cast< NameExpr* >( untypedExpr->get_function() ); |
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| 278 | if ( ! fn || fn->get_name() != std::string("*?") ) return 0; |
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| 279 | expr = *untypedExpr->begin_args(); |
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[540de412] | 280 | } else if ( CommaExpr *commaExpr = dynamic_cast< CommaExpr* >( expr ) ) { |
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| 281 | // copy constructors insert comma exprs, look at second argument which contains the variable |
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| 282 | expr = commaExpr->get_arg2(); |
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| 283 | continue; |
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[1aa4b71] | 284 | } else if ( ConditionalExpr * condExpr = dynamic_cast< ConditionalExpr * >( expr ) ) { |
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| 285 | int lvl1; |
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| 286 | int lvl2; |
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| 287 | VariableExpr * var1 = getBaseVar( condExpr->get_arg2(), &lvl1 ); |
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| 288 | VariableExpr * var2 = getBaseVar( condExpr->get_arg3(), &lvl2 ); |
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| 289 | if ( lvl1 == lvl2 && var1 && var2 && var1->get_var() == var2->get_var() ) { |
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| 290 | *levels = lvl1; |
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| 291 | return var1; |
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| 292 | } |
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| 293 | break; |
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[8488c715] | 294 | } else break; |
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| 295 | |
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| 296 | ++(*levels); |
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| 297 | } |
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| 298 | |
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| 299 | return 0; |
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[05d47278] | 300 | } |
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| 301 | |
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[5a3ac84] | 302 | namespace { |
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| 303 | /// Checks if is a pointer to D |
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| 304 | template<typename D, typename B> |
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| 305 | bool is( const B* p ) { return type_index{typeid(D)} == type_index{typeid(*p)}; } |
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| 306 | |
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| 307 | /// Converts to a pointer to D without checking for safety |
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| 308 | template<typename D, typename B> |
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| 309 | inline D* as( B* p ) { return reinterpret_cast<D*>(p); } |
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| 310 | |
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| 311 | /// Flattens a declaration list |
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| 312 | template<typename Output> |
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| 313 | void flattenList( list< DeclarationWithType* > src, Output out ) { |
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| 314 | for ( DeclarationWithType* decl : src ) { |
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| 315 | ResolvExpr::flatten( decl->get_type(), out ); |
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| 316 | } |
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| 317 | } |
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| 318 | |
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| 319 | /// Flattens a list of types |
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| 320 | template<typename Output> |
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| 321 | void flattenList( list< Type* > src, Output out ) { |
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| 322 | for ( Type* ty : src ) { |
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| 323 | ResolvExpr::flatten( ty, out ); |
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| 324 | } |
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| 325 | } |
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| 326 | |
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| 327 | /// Checks if two lists of parameters are equal up to polymorphic substitution. |
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| 328 | bool paramListsPolyCompatible( const list< Expression* >& aparams, const list< Expression* >& bparams ) { |
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| 329 | if ( aparams.size() != bparams.size() ) return false; |
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| 330 | |
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| 331 | for ( list< Expression* >::const_iterator at = aparams.begin(), bt = bparams.begin(); |
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| 332 | at != aparams.end(); ++at, ++bt ) { |
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| 333 | TypeExpr *aparam = dynamic_cast< TypeExpr* >(*at); |
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| 334 | assertf(aparam, "Aggregate parameters should be type expressions"); |
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| 335 | TypeExpr *bparam = dynamic_cast< TypeExpr* >(*bt); |
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| 336 | assertf(bparam, "Aggregate parameters should be type expressions"); |
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| 337 | |
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[cccc534] | 338 | // xxx - might need to let VoidType be a wildcard here too; could have some voids |
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[5a3ac84] | 339 | // stuffed in for dtype-statics. |
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| 340 | // if ( is<VoidType>( aparam->get_type() ) || is<VoidType>( bparam->get_type() ) ) continue; |
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| 341 | if ( ! typesPolyCompatible( aparam->get_type(), bparam->get_type() ) ) return false; |
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| 342 | } |
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[cccc534] | 343 | |
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[5a3ac84] | 344 | return true; |
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| 345 | } |
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| 346 | } |
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| 347 | |
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| 348 | bool typesPolyCompatible( Type *a, Type *b ) { |
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| 349 | type_index aid{ typeid(*a) }; |
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| 350 | // polymorphic types always match |
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| 351 | if ( aid == type_index{typeid(TypeInstType)} ) return true; |
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[cccc534] | 352 | |
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[5a3ac84] | 353 | type_index bid{ typeid(*b) }; |
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| 354 | // polymorphic types always match |
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| 355 | if ( bid == type_index{typeid(TypeInstType)} ) return true; |
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[cccc534] | 356 | |
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[5a3ac84] | 357 | // can't match otherwise if different types |
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| 358 | if ( aid != bid ) return false; |
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| 359 | |
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| 360 | // recurse through type structure (conditions borrowed from Unify.cc) |
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| 361 | if ( aid == type_index{typeid(BasicType)} ) { |
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| 362 | return as<BasicType>(a)->get_kind() == as<BasicType>(b)->get_kind(); |
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| 363 | } else if ( aid == type_index{typeid(PointerType)} ) { |
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| 364 | PointerType *ap = as<PointerType>(a), *bp = as<PointerType>(b); |
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| 365 | |
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| 366 | // void pointers should match any other pointer type |
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| 367 | return is<VoidType>( ap->get_base() ) || is<VoidType>( bp->get_base() ) |
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| 368 | || typesPolyCompatible( ap->get_base(), bp->get_base() ); |
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| 369 | } else if ( aid == type_index{typeid(ArrayType)} ) { |
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| 370 | ArrayType *aa = as<ArrayType>(a), *ba = as<ArrayType>(b); |
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| 371 | |
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| 372 | if ( aa->get_isVarLen() ) { |
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| 373 | if ( ! ba->get_isVarLen() ) return false; |
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| 374 | } else { |
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| 375 | if ( ba->get_isVarLen() ) return false; |
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| 376 | |
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| 377 | ConstantExpr *ad = dynamic_cast<ConstantExpr*>( aa->get_dimension() ); |
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| 378 | ConstantExpr *bd = dynamic_cast<ConstantExpr*>( ba->get_dimension() ); |
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[cccc534] | 379 | if ( ad && bd |
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[5a3ac84] | 380 | && ad->get_constant()->get_value() != bd->get_constant()->get_value() ) |
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| 381 | return false; |
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| 382 | } |
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| 383 | |
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| 384 | return typesPolyCompatible( aa->get_base(), ba->get_base() ); |
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| 385 | } else if ( aid == type_index{typeid(FunctionType)} ) { |
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| 386 | FunctionType *af = as<FunctionType>(a), *bf = as<FunctionType>(b); |
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| 387 | |
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| 388 | vector<Type*> aparams, bparams; |
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| 389 | flattenList( af->get_parameters(), back_inserter( aparams ) ); |
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| 390 | flattenList( bf->get_parameters(), back_inserter( bparams ) ); |
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| 391 | if ( aparams.size() != bparams.size() ) return false; |
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| 392 | |
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| 393 | vector<Type*> areturns, breturns; |
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| 394 | flattenList( af->get_returnVals(), back_inserter( areturns ) ); |
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| 395 | flattenList( bf->get_returnVals(), back_inserter( breturns ) ); |
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| 396 | if ( areturns.size() != breturns.size() ) return false; |
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| 397 | |
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| 398 | for ( unsigned i = 0; i < aparams.size(); ++i ) { |
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| 399 | if ( ! typesPolyCompatible( aparams[i], bparams[i] ) ) return false; |
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| 400 | } |
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| 401 | for ( unsigned i = 0; i < areturns.size(); ++i ) { |
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| 402 | if ( ! typesPolyCompatible( areturns[i], breturns[i] ) ) return false; |
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| 403 | } |
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| 404 | return true; |
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| 405 | } else if ( aid == type_index{typeid(StructInstType)} ) { |
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| 406 | StructInstType *aa = as<StructInstType>(a), *ba = as<StructInstType>(b); |
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| 407 | |
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| 408 | if ( aa->get_name() != ba->get_name() ) return false; |
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| 409 | return paramListsPolyCompatible( aa->get_parameters(), ba->get_parameters() ); |
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| 410 | } else if ( aid == type_index{typeid(UnionInstType)} ) { |
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| 411 | UnionInstType *aa = as<UnionInstType>(a), *ba = as<UnionInstType>(b); |
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| 412 | |
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| 413 | if ( aa->get_name() != ba->get_name() ) return false; |
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| 414 | return paramListsPolyCompatible( aa->get_parameters(), ba->get_parameters() ); |
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| 415 | } else if ( aid == type_index{typeid(EnumInstType)} ) { |
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| 416 | return as<EnumInstType>(a)->get_name() == as<EnumInstType>(b)->get_name(); |
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| 417 | } else if ( aid == type_index{typeid(TraitInstType)} ) { |
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| 418 | return as<TraitInstType>(a)->get_name() == as<TraitInstType>(b)->get_name(); |
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| 419 | } else if ( aid == type_index{typeid(TupleType)} ) { |
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| 420 | TupleType *at = as<TupleType>(a), *bt = as<TupleType>(b); |
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| 421 | |
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| 422 | vector<Type*> atypes, btypes; |
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| 423 | flattenList( at->get_types(), back_inserter( atypes ) ); |
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| 424 | flattenList( bt->get_types(), back_inserter( btypes ) ); |
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| 425 | if ( atypes.size() != btypes.size() ) return false; |
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| 426 | |
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| 427 | for ( unsigned i = 0; i < atypes.size(); ++i ) { |
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| 428 | if ( ! typesPolyCompatible( atypes[i], btypes[i] ) ) return false; |
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| 429 | } |
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| 430 | return true; |
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| 431 | } else return true; // VoidType, VarArgsType, ZeroType & OneType just need the same type |
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| 432 | } |
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| 433 | |
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[ae1b9ea] | 434 | bool needsBoxing( Type * param, Type * arg, const TyVarMap &exprTyVars, TypeSubstitution * env ) { |
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| 435 | // is parameter is not polymorphic, don't need to box |
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| 436 | if ( ! isPolyType( param, exprTyVars ) ) return false; |
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| 437 | Type * newType = arg->clone(); |
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| 438 | if ( env ) env->apply( newType ); |
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| 439 | std::unique_ptr<Type> manager( newType ); |
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| 440 | // if the argument's type is polymorphic, we don't need to box again! |
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| 441 | return ! isPolyType( newType ); |
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| 442 | } |
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| 443 | |
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| 444 | bool needsBoxing( Type * param, Type * arg, ApplicationExpr * appExpr, TypeSubstitution * env ) { |
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| 445 | FunctionType * function = getFunctionType( appExpr->function->result ); |
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| 446 | assertf( function, "ApplicationExpr has non-function type: %s", toString( appExpr->function->result ).c_str() ); |
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| 447 | TyVarMap exprTyVars( TypeDecl::Data{} ); |
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| 448 | makeTyVarMap( function, exprTyVars ); |
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| 449 | return needsBoxing( param, arg, exprTyVars, env ); |
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| 450 | } |
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| 451 | |
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[2c57025] | 452 | void addToTyVarMap( TypeDecl * tyVar, TyVarMap &tyVarMap ) { |
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[9b18044] | 453 | // xxx - should this actually be insert? |
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[2c57025] | 454 | tyVarMap[ tyVar->get_name() ] = TypeDecl::Data{ tyVar }; |
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| 455 | } |
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| 456 | |
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[aadc9a4] | 457 | void makeTyVarMap( Type *type, TyVarMap &tyVarMap ) { |
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[8c49c0e] | 458 | for ( Type::ForallList::const_iterator tyVar = type->get_forall().begin(); tyVar != type->get_forall().end(); ++tyVar ) { |
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[aadc9a4] | 459 | assert( *tyVar ); |
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[2c57025] | 460 | addToTyVarMap( *tyVar, tyVarMap ); |
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[aadc9a4] | 461 | } |
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| 462 | if ( PointerType *pointer = dynamic_cast< PointerType* >( type ) ) { |
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| 463 | makeTyVarMap( pointer->get_base(), tyVarMap ); |
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| 464 | } |
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| 465 | } |
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[540de412] | 466 | |
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[01aeade] | 467 | void printTyVarMap( std::ostream &os, const TyVarMap &tyVarMap ) { |
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| 468 | for ( TyVarMap::const_iterator i = tyVarMap.begin(); i != tyVarMap.end(); ++i ) { |
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| 469 | os << i->first << " (" << i->second << ") "; |
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| 470 | } // for |
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| 471 | os << std::endl; |
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| 472 | } |
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[ffad73a] | 473 | |
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[51b7345] | 474 | } // namespace GenPoly |
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[01aeade] | 475 | |
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[51587aa] | 476 | // Local Variables: // |
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| 477 | // tab-width: 4 // |
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| 478 | // mode: c++ // |
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| 479 | // compile-command: "make install" // |
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| 480 | // End: // |
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