| [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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| [51b73452] | 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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| [d76c588] | 26 | #include "AST/Type.hpp" | 
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| [08fc48f] | 27 | #include "GenPoly/ErasableScopedMap.h"  // for ErasableScopedMap<>::const_it... | 
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|  | 28 | #include "ResolvExpr/typeops.h"         // for flatten | 
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|  | 29 | #include "SynTree/Constant.h"           // for Constant | 
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|  | 30 | #include "SynTree/Expression.h"         // for Expression, TypeExpr, Constan... | 
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|  | 31 | #include "SynTree/Type.h"               // for Type, StructInstType, UnionIn... | 
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|  | 32 | #include "SynTree/TypeSubstitution.h"   // for TypeSubstitution | 
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| [51b73452] | 33 |  | 
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| [b1a6d6b] | 34 | using namespace std; | 
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| [51b73452] | 35 |  | 
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|  | 36 | namespace GenPoly { | 
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| [ffad73a] | 37 | namespace { | 
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| [0f889a77] | 38 | /// Checks a parameter list for polymorphic parameters; will substitute according to env if present | 
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|  | 39 | bool hasPolyParams( std::list< Expression* >& params, const TypeSubstitution *env ) { | 
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|  | 40 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { | 
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|  | 41 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); | 
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| [7350ff97] | 42 | assertf(paramType, "Aggregate parameters should be type expressions"); | 
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| [0f889a77] | 43 | if ( isPolyType( paramType->get_type(), env ) ) return true; | 
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|  | 44 | } | 
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|  | 45 | return false; | 
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|  | 46 | } | 
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|  | 47 |  | 
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|  | 48 | /// Checks a parameter list for polymorphic parameters from tyVars; will substitute according to env if present | 
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| [ffad73a] | 49 | bool hasPolyParams( std::list< Expression* >& params, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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|  | 50 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { | 
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|  | 51 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); | 
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| [5a3ac84] | 52 | assertf(paramType, "Aggregate parameters should be type expressions"); | 
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| [ffad73a] | 53 | if ( isPolyType( paramType->get_type(), tyVars, env ) ) return true; | 
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|  | 54 | } | 
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|  | 55 | return false; | 
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|  | 56 | } | 
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| [3bb195cb] | 57 |  | 
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|  | 58 | /// Checks a parameter list for dynamic-layout parameters from tyVars; will substitute according to env if present | 
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|  | 59 | bool hasDynParams( std::list< Expression* >& params, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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|  | 60 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { | 
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|  | 61 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); | 
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| [5a3ac84] | 62 | assertf(paramType, "Aggregate parameters should be type expressions"); | 
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| [3bb195cb] | 63 | if ( isDynType( paramType->get_type(), tyVars, env ) ) return true; | 
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|  | 64 | } | 
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|  | 65 | return false; | 
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|  | 66 | } | 
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| [5a3ac84] | 67 |  | 
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|  | 68 | /// Checks a parameter list for inclusion of polymorphic parameters; will substitute according to env if present | 
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|  | 69 | bool includesPolyParams( std::list< Expression* >& params, const TypeSubstitution *env ) { | 
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|  | 70 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { | 
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|  | 71 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); | 
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|  | 72 | assertf(paramType, "Aggregate parameters should be type expressions"); | 
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|  | 73 | if ( includesPolyType( paramType->get_type(), env ) ) return true; | 
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|  | 74 | } | 
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|  | 75 | return false; | 
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|  | 76 | } | 
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|  | 77 |  | 
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|  | 78 | /// Checks a parameter list for inclusion of polymorphic parameters from tyVars; will substitute according to env if present | 
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|  | 79 | bool includesPolyParams( std::list< Expression* >& params, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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|  | 80 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { | 
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|  | 81 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); | 
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|  | 82 | assertf(paramType, "Aggregate parameters should be type expressions"); | 
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|  | 83 | if ( includesPolyType( paramType->get_type(), tyVars, env ) ) return true; | 
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|  | 84 | } | 
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|  | 85 | return false; | 
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|  | 86 | } | 
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| [c2ad3c9] | 87 | } | 
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| [83de11e] | 88 |  | 
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| [c2ad3c9] | 89 | Type* replaceTypeInst( Type* type, const TypeSubstitution* env ) { | 
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|  | 90 | if ( ! env ) return type; | 
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|  | 91 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType* >( type ) ) { | 
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|  | 92 | Type *newType = env->lookup( typeInst->get_name() ); | 
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|  | 93 | if ( newType ) return newType; | 
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| [e24955a] | 94 | } | 
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| [c2ad3c9] | 95 | return type; | 
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| [ffad73a] | 96 | } | 
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| [0f889a77] | 97 |  | 
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|  | 98 | Type *isPolyType( Type *type, const TypeSubstitution *env ) { | 
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| [e24955a] | 99 | type = replaceTypeInst( type, env ); | 
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| [83de11e] | 100 |  | 
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| [ca35c51] | 101 | if ( dynamic_cast< TypeInstType * >( type ) ) { | 
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| [0f889a77] | 102 | return type; | 
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| [5f61546] | 103 | } else if ( ArrayType * arrayType = dynamic_cast< ArrayType * >( type ) ) { | 
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|  | 104 | return isPolyType( arrayType->base, env ); | 
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| [0f889a77] | 105 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { | 
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|  | 106 | if ( hasPolyParams( structType->get_parameters(), env ) ) return type; | 
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|  | 107 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { | 
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|  | 108 | if ( hasPolyParams( unionType->get_parameters(), env ) ) return type; | 
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|  | 109 | } | 
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|  | 110 | return 0; | 
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|  | 111 | } | 
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| [540de412] | 112 |  | 
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| [ffad73a] | 113 | Type *isPolyType( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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| [e24955a] | 114 | type = replaceTypeInst( type, env ); | 
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| [83de11e] | 115 |  | 
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| [e56cfdb0] | 116 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { | 
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| [ffad73a] | 117 | if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { | 
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|  | 118 | return type; | 
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| [0f889a77] | 119 | } | 
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| [5f61546] | 120 | } else if ( ArrayType * arrayType = dynamic_cast< ArrayType * >( type ) ) { | 
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|  | 121 | return isPolyType( arrayType->base, tyVars, env ); | 
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| [ffad73a] | 122 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { | 
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|  | 123 | if ( hasPolyParams( structType->get_parameters(), tyVars, env ) ) return type; | 
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|  | 124 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { | 
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|  | 125 | if ( hasPolyParams( unionType->get_parameters(), tyVars, env ) ) return type; | 
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|  | 126 | } | 
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|  | 127 | return 0; | 
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| [01aeade] | 128 | } | 
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| [b1a6d6b] | 129 |  | 
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| [33a7b6d] | 130 | ReferenceToType *isDynType( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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| [3bb195cb] | 131 | type = replaceTypeInst( type, env ); | 
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|  | 132 |  | 
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|  | 133 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { | 
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|  | 134 | auto var = tyVars.find( typeInst->get_name() ); | 
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| [2c57025] | 135 | if ( var != tyVars.end() && var->second.isComplete ) { | 
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| [33a7b6d] | 136 | return typeInst; | 
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| [3bb195cb] | 137 | } | 
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|  | 138 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { | 
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| [33a7b6d] | 139 | if ( hasDynParams( structType->get_parameters(), tyVars, env ) ) return structType; | 
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| [3bb195cb] | 140 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { | 
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| [33a7b6d] | 141 | if ( hasDynParams( unionType->get_parameters(), tyVars, env ) ) return unionType; | 
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| [3bb195cb] | 142 | } | 
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|  | 143 | return 0; | 
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|  | 144 | } | 
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|  | 145 |  | 
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|  | 146 | ReferenceToType *isDynRet( FunctionType *function, const TyVarMap &forallTypes ) { | 
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|  | 147 | if ( function->get_returnVals().empty() ) return 0; | 
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| [8c49c0e] | 148 |  | 
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| [3bb195cb] | 149 | return (ReferenceToType*)isDynType( function->get_returnVals().front()->get_type(), forallTypes ); | 
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|  | 150 | } | 
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|  | 151 |  | 
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|  | 152 | ReferenceToType *isDynRet( FunctionType *function ) { | 
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|  | 153 | if ( function->get_returnVals().empty() ) return 0; | 
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|  | 154 |  | 
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| [2c57025] | 155 | TyVarMap forallTypes( TypeDecl::Data{} ); | 
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| [3bb195cb] | 156 | makeTyVarMap( function, forallTypes ); | 
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|  | 157 | return (ReferenceToType*)isDynType( function->get_returnVals().front()->get_type(), forallTypes ); | 
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|  | 158 | } | 
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|  | 159 |  | 
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|  | 160 | bool needsAdapter( FunctionType *adaptee, const TyVarMap &tyVars ) { | 
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|  | 161 | //              if ( ! adaptee->get_returnVals().empty() && isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { | 
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|  | 162 | //                      return true; | 
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|  | 163 | //              } // if | 
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|  | 164 | if ( isDynRet( adaptee, tyVars ) ) return true; | 
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| [8c49c0e] | 165 |  | 
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| [3bb195cb] | 166 | for ( std::list< DeclarationWithType* >::const_iterator innerArg = adaptee->get_parameters().begin(); innerArg != adaptee->get_parameters().end(); ++innerArg ) { | 
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|  | 167 | //                      if ( isPolyType( (*innerArg)->get_type(), tyVars ) ) { | 
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|  | 168 | if ( isDynType( (*innerArg)->get_type(), tyVars ) ) { | 
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|  | 169 | return true; | 
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|  | 170 | } // if | 
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|  | 171 | } // for | 
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|  | 172 | return false; | 
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|  | 173 | } | 
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|  | 174 |  | 
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| [0f889a77] | 175 | Type *isPolyPtr( Type *type, const TypeSubstitution *env ) { | 
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| [e24955a] | 176 | type = replaceTypeInst( type, env ); | 
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| [83de11e] | 177 |  | 
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| [0f889a77] | 178 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { | 
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|  | 179 | return isPolyType( ptr->get_base(), env ); | 
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| [e24955a] | 180 | } | 
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| [0f889a77] | 181 | return 0; | 
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|  | 182 | } | 
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| [540de412] | 183 |  | 
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| [ffad73a] | 184 | Type *isPolyPtr( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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| [e24955a] | 185 | type = replaceTypeInst( type, env ); | 
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| [83de11e] | 186 |  | 
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| [ffad73a] | 187 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { | 
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|  | 188 | return isPolyType( ptr->get_base(), tyVars, env ); | 
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| [e24955a] | 189 | } | 
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| [ffad73a] | 190 | return 0; | 
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| [bdf1954] | 191 | } | 
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|  | 192 |  | 
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| [8488c715] | 193 | Type * hasPolyBase( Type *type, int *levels, const TypeSubstitution *env ) { | 
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|  | 194 | int dummy; | 
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|  | 195 | if ( ! levels ) { levels = &dummy; } | 
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|  | 196 | *levels = 0; | 
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|  | 197 |  | 
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|  | 198 | while ( true ) { | 
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| [e24955a] | 199 | type = replaceTypeInst( type, env ); | 
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| [83de11e] | 200 |  | 
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| [8488c715] | 201 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { | 
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|  | 202 | type = ptr->get_base(); | 
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|  | 203 | ++(*levels); | 
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|  | 204 | } else break; | 
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| [05d47278] | 205 | } | 
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|  | 206 |  | 
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|  | 207 | return isPolyType( type, env ); | 
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|  | 208 | } | 
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| [540de412] | 209 |  | 
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| [8488c715] | 210 | Type * hasPolyBase( Type *type, const TyVarMap &tyVars, int *levels, const TypeSubstitution *env ) { | 
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|  | 211 | int dummy; | 
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|  | 212 | if ( ! levels ) { levels = &dummy; } | 
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|  | 213 | *levels = 0; | 
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|  | 214 |  | 
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|  | 215 | while ( true ) { | 
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| [e24955a] | 216 | type = replaceTypeInst( type, env ); | 
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| [83de11e] | 217 |  | 
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| [8488c715] | 218 | if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) { | 
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|  | 219 | type = ptr->get_base(); | 
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|  | 220 | ++(*levels); | 
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|  | 221 | } else break; | 
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| [05d47278] | 222 | } | 
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|  | 223 |  | 
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|  | 224 | return isPolyType( type, tyVars, env ); | 
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|  | 225 | } | 
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|  | 226 |  | 
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| [5a3ac84] | 227 | bool includesPolyType( Type *type, const TypeSubstitution *env ) { | 
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|  | 228 | type = replaceTypeInst( type, env ); | 
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|  | 229 |  | 
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|  | 230 | if ( dynamic_cast< TypeInstType * >( type ) ) { | 
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|  | 231 | return true; | 
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|  | 232 | } else if ( PointerType *pointerType = dynamic_cast< PointerType* >( type ) ) { | 
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|  | 233 | if ( includesPolyType( pointerType->get_base(), env ) ) return true; | 
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|  | 234 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { | 
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|  | 235 | if ( includesPolyParams( structType->get_parameters(), env ) ) return true; | 
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|  | 236 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { | 
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|  | 237 | if ( includesPolyParams( unionType->get_parameters(), env ) ) return true; | 
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|  | 238 | } | 
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|  | 239 | return false; | 
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|  | 240 | } | 
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|  | 241 |  | 
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|  | 242 | bool includesPolyType( Type *type, const TyVarMap &tyVars, const TypeSubstitution *env ) { | 
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|  | 243 | type = replaceTypeInst( type, env ); | 
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|  | 244 |  | 
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|  | 245 | if ( TypeInstType *typeInstType = dynamic_cast< TypeInstType * >( type ) ) { | 
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|  | 246 | if ( tyVars.find( typeInstType->get_name() ) != tyVars.end() ) { | 
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|  | 247 | return true; | 
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|  | 248 | } | 
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|  | 249 | } else if ( PointerType *pointerType = dynamic_cast< PointerType* >( type ) ) { | 
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|  | 250 | if ( includesPolyType( pointerType->get_base(), tyVars, env ) ) return true; | 
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|  | 251 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { | 
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|  | 252 | if ( includesPolyParams( structType->get_parameters(), tyVars, env ) ) return true; | 
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|  | 253 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { | 
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|  | 254 | if ( includesPolyParams( unionType->get_parameters(), tyVars, env ) ) return true; | 
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|  | 255 | } | 
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|  | 256 | return false; | 
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|  | 257 | } | 
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|  | 258 |  | 
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| [7754cde] | 259 | FunctionType * getFunctionType( Type *ty ) { | 
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|  | 260 | PointerType *ptrType; | 
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|  | 261 | if ( ( ptrType = dynamic_cast< PointerType* >( ty ) ) ) { | 
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|  | 262 | return dynamic_cast< FunctionType* >( ptrType->get_base() ); // pointer if FunctionType, NULL otherwise | 
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|  | 263 | } else { | 
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|  | 264 | return dynamic_cast< FunctionType* >( ty ); // pointer if FunctionType, NULL otherwise | 
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|  | 265 | } | 
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|  | 266 | } | 
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|  | 267 |  | 
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| [d76c588] | 268 | const ast::FunctionType * getFunctionType( const ast::Type * ty ) { | 
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|  | 269 | if ( auto pty = dynamic_cast< const ast::PointerType * >( ty ) ) { | 
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|  | 270 | return pty->base.as< ast::FunctionType >(); | 
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|  | 271 | } else { | 
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|  | 272 | return dynamic_cast< const ast::FunctionType * >( ty ); | 
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|  | 273 | } | 
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|  | 274 | } | 
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|  | 275 |  | 
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| [8488c715] | 276 | VariableExpr * getBaseVar( Expression *expr, int *levels ) { | 
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|  | 277 | int dummy; | 
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|  | 278 | if ( ! levels ) { levels = &dummy; } | 
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|  | 279 | *levels = 0; | 
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|  | 280 |  | 
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|  | 281 | while ( true ) { | 
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|  | 282 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( expr ) ) { | 
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|  | 283 | return varExpr; | 
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| [d9f1b2d] | 284 | } else if ( MemberExpr *memberExpr = dynamic_cast< MemberExpr* >( expr ) ) { | 
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|  | 285 | expr = memberExpr->get_aggregate(); | 
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| [8488c715] | 286 | } else if ( AddressExpr *addressExpr = dynamic_cast< AddressExpr* >( expr ) ) { | 
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|  | 287 | expr = addressExpr->get_arg(); | 
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|  | 288 | } else if ( UntypedExpr *untypedExpr = dynamic_cast< UntypedExpr* >( expr ) ) { | 
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|  | 289 | // look for compiler-inserted dereference operator | 
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|  | 290 | NameExpr *fn = dynamic_cast< NameExpr* >( untypedExpr->get_function() ); | 
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|  | 291 | if ( ! fn || fn->get_name() != std::string("*?") ) return 0; | 
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|  | 292 | expr = *untypedExpr->begin_args(); | 
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| [540de412] | 293 | } else if ( CommaExpr *commaExpr = dynamic_cast< CommaExpr* >( expr ) ) { | 
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|  | 294 | // copy constructors insert comma exprs, look at second argument which contains the variable | 
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|  | 295 | expr = commaExpr->get_arg2(); | 
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|  | 296 | continue; | 
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| [1aa4b71] | 297 | } else if ( ConditionalExpr * condExpr = dynamic_cast< ConditionalExpr * >( expr ) ) { | 
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|  | 298 | int lvl1; | 
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|  | 299 | int lvl2; | 
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|  | 300 | VariableExpr * var1 = getBaseVar( condExpr->get_arg2(), &lvl1 ); | 
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|  | 301 | VariableExpr * var2 = getBaseVar( condExpr->get_arg3(), &lvl2 ); | 
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|  | 302 | if ( lvl1 == lvl2 && var1 && var2 && var1->get_var() == var2->get_var() ) { | 
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|  | 303 | *levels = lvl1; | 
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|  | 304 | return var1; | 
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|  | 305 | } | 
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|  | 306 | break; | 
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| [8488c715] | 307 | } else break; | 
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|  | 308 |  | 
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|  | 309 | ++(*levels); | 
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|  | 310 | } | 
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|  | 311 |  | 
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|  | 312 | return 0; | 
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| [05d47278] | 313 | } | 
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|  | 314 |  | 
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| [5a3ac84] | 315 | namespace { | 
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|  | 316 | /// Checks if is a pointer to D | 
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|  | 317 | template<typename D, typename B> | 
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|  | 318 | bool is( const B* p ) { return type_index{typeid(D)} == type_index{typeid(*p)}; } | 
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|  | 319 |  | 
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|  | 320 | /// Converts to a pointer to D without checking for safety | 
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|  | 321 | template<typename D, typename B> | 
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|  | 322 | inline D* as( B* p ) { return reinterpret_cast<D*>(p); } | 
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|  | 323 |  | 
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|  | 324 | /// Flattens a declaration list | 
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|  | 325 | template<typename Output> | 
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|  | 326 | void flattenList( list< DeclarationWithType* > src, Output out ) { | 
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|  | 327 | for ( DeclarationWithType* decl : src ) { | 
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|  | 328 | ResolvExpr::flatten( decl->get_type(), out ); | 
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|  | 329 | } | 
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|  | 330 | } | 
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|  | 331 |  | 
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|  | 332 | /// Flattens a list of types | 
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|  | 333 | template<typename Output> | 
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|  | 334 | void flattenList( list< Type* > src, Output out ) { | 
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|  | 335 | for ( Type* ty : src ) { | 
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|  | 336 | ResolvExpr::flatten( ty, out ); | 
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|  | 337 | } | 
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|  | 338 | } | 
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|  | 339 |  | 
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|  | 340 | /// Checks if two lists of parameters are equal up to polymorphic substitution. | 
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|  | 341 | bool paramListsPolyCompatible( const list< Expression* >& aparams, const list< Expression* >& bparams ) { | 
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|  | 342 | if ( aparams.size() != bparams.size() ) return false; | 
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|  | 343 |  | 
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|  | 344 | for ( list< Expression* >::const_iterator at = aparams.begin(), bt = bparams.begin(); | 
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|  | 345 | at != aparams.end(); ++at, ++bt ) { | 
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|  | 346 | TypeExpr *aparam = dynamic_cast< TypeExpr* >(*at); | 
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|  | 347 | assertf(aparam, "Aggregate parameters should be type expressions"); | 
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|  | 348 | TypeExpr *bparam = dynamic_cast< TypeExpr* >(*bt); | 
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|  | 349 | assertf(bparam, "Aggregate parameters should be type expressions"); | 
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|  | 350 |  | 
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| [cccc534] | 351 | // xxx - might need to let VoidType be a wildcard here too; could have some voids | 
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| [5a3ac84] | 352 | // stuffed in for dtype-statics. | 
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|  | 353 | // if ( is<VoidType>( aparam->get_type() ) || is<VoidType>( bparam->get_type() ) ) continue; | 
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|  | 354 | if ( ! typesPolyCompatible( aparam->get_type(), bparam->get_type() ) ) return false; | 
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|  | 355 | } | 
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| [cccc534] | 356 |  | 
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| [5a3ac84] | 357 | return true; | 
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|  | 358 | } | 
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|  | 359 | } | 
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|  | 360 |  | 
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|  | 361 | bool typesPolyCompatible( Type *a, Type *b ) { | 
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|  | 362 | type_index aid{ typeid(*a) }; | 
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|  | 363 | // polymorphic types always match | 
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|  | 364 | if ( aid == type_index{typeid(TypeInstType)} ) return true; | 
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| [cccc534] | 365 |  | 
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| [5a3ac84] | 366 | type_index bid{ typeid(*b) }; | 
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|  | 367 | // polymorphic types always match | 
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|  | 368 | if ( bid == type_index{typeid(TypeInstType)} ) return true; | 
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| [cccc534] | 369 |  | 
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| [5a3ac84] | 370 | // can't match otherwise if different types | 
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|  | 371 | if ( aid != bid ) return false; | 
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|  | 372 |  | 
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|  | 373 | // recurse through type structure (conditions borrowed from Unify.cc) | 
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|  | 374 | if ( aid == type_index{typeid(BasicType)} ) { | 
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|  | 375 | return as<BasicType>(a)->get_kind() == as<BasicType>(b)->get_kind(); | 
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|  | 376 | } else if ( aid == type_index{typeid(PointerType)} ) { | 
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|  | 377 | PointerType *ap = as<PointerType>(a), *bp = as<PointerType>(b); | 
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|  | 378 |  | 
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|  | 379 | // void pointers should match any other pointer type | 
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|  | 380 | return is<VoidType>( ap->get_base() ) || is<VoidType>( bp->get_base() ) | 
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|  | 381 | || typesPolyCompatible( ap->get_base(), bp->get_base() ); | 
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| [682dcae] | 382 | } else if ( aid == type_index{typeid(ReferenceType)} ) { | 
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|  | 383 | ReferenceType *ap = as<ReferenceType>(a), *bp = as<ReferenceType>(b); | 
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|  | 384 | return is<VoidType>( ap->get_base() ) || is<VoidType>( bp->get_base() ) | 
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|  | 385 | || typesPolyCompatible( ap->get_base(), bp->get_base() ); | 
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| [5a3ac84] | 386 | } else if ( aid == type_index{typeid(ArrayType)} ) { | 
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|  | 387 | ArrayType *aa = as<ArrayType>(a), *ba = as<ArrayType>(b); | 
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|  | 388 |  | 
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|  | 389 | if ( aa->get_isVarLen() ) { | 
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|  | 390 | if ( ! ba->get_isVarLen() ) return false; | 
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|  | 391 | } else { | 
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|  | 392 | if ( ba->get_isVarLen() ) return false; | 
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|  | 393 |  | 
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|  | 394 | ConstantExpr *ad = dynamic_cast<ConstantExpr*>( aa->get_dimension() ); | 
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|  | 395 | ConstantExpr *bd = dynamic_cast<ConstantExpr*>( ba->get_dimension() ); | 
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| [cccc534] | 396 | if ( ad && bd | 
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| [5a3ac84] | 397 | && ad->get_constant()->get_value() != bd->get_constant()->get_value() ) | 
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|  | 398 | return false; | 
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|  | 399 | } | 
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|  | 400 |  | 
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|  | 401 | return typesPolyCompatible( aa->get_base(), ba->get_base() ); | 
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|  | 402 | } else if ( aid == type_index{typeid(FunctionType)} ) { | 
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|  | 403 | FunctionType *af = as<FunctionType>(a), *bf = as<FunctionType>(b); | 
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|  | 404 |  | 
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|  | 405 | vector<Type*> aparams, bparams; | 
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|  | 406 | flattenList( af->get_parameters(), back_inserter( aparams ) ); | 
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|  | 407 | flattenList( bf->get_parameters(), back_inserter( bparams ) ); | 
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|  | 408 | if ( aparams.size() != bparams.size() ) return false; | 
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|  | 409 |  | 
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|  | 410 | vector<Type*> areturns, breturns; | 
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|  | 411 | flattenList( af->get_returnVals(), back_inserter( areturns ) ); | 
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|  | 412 | flattenList( bf->get_returnVals(), back_inserter( breturns ) ); | 
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|  | 413 | if ( areturns.size() != breturns.size() ) return false; | 
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|  | 414 |  | 
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|  | 415 | for ( unsigned i = 0; i < aparams.size(); ++i ) { | 
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|  | 416 | if ( ! typesPolyCompatible( aparams[i], bparams[i] ) ) return false; | 
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|  | 417 | } | 
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|  | 418 | for ( unsigned i = 0; i < areturns.size(); ++i ) { | 
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|  | 419 | if ( ! typesPolyCompatible( areturns[i], breturns[i] ) ) return false; | 
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|  | 420 | } | 
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|  | 421 | return true; | 
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|  | 422 | } else if ( aid == type_index{typeid(StructInstType)} ) { | 
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|  | 423 | StructInstType *aa = as<StructInstType>(a), *ba = as<StructInstType>(b); | 
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|  | 424 |  | 
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|  | 425 | if ( aa->get_name() != ba->get_name() ) return false; | 
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|  | 426 | return paramListsPolyCompatible( aa->get_parameters(), ba->get_parameters() ); | 
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|  | 427 | } else if ( aid == type_index{typeid(UnionInstType)} ) { | 
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|  | 428 | UnionInstType *aa = as<UnionInstType>(a), *ba = as<UnionInstType>(b); | 
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|  | 429 |  | 
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|  | 430 | if ( aa->get_name() != ba->get_name() ) return false; | 
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|  | 431 | return paramListsPolyCompatible( aa->get_parameters(), ba->get_parameters() ); | 
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|  | 432 | } else if ( aid == type_index{typeid(EnumInstType)} ) { | 
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|  | 433 | return as<EnumInstType>(a)->get_name() == as<EnumInstType>(b)->get_name(); | 
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|  | 434 | } else if ( aid == type_index{typeid(TraitInstType)} ) { | 
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|  | 435 | return as<TraitInstType>(a)->get_name() == as<TraitInstType>(b)->get_name(); | 
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|  | 436 | } else if ( aid == type_index{typeid(TupleType)} ) { | 
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|  | 437 | TupleType *at = as<TupleType>(a), *bt = as<TupleType>(b); | 
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|  | 438 |  | 
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|  | 439 | vector<Type*> atypes, btypes; | 
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|  | 440 | flattenList( at->get_types(), back_inserter( atypes ) ); | 
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|  | 441 | flattenList( bt->get_types(), back_inserter( btypes ) ); | 
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|  | 442 | if ( atypes.size() != btypes.size() ) return false; | 
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|  | 443 |  | 
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|  | 444 | for ( unsigned i = 0; i < atypes.size(); ++i ) { | 
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|  | 445 | if ( ! typesPolyCompatible( atypes[i], btypes[i] ) ) return false; | 
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|  | 446 | } | 
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|  | 447 | return true; | 
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|  | 448 | } else return true; // VoidType, VarArgsType, ZeroType & OneType just need the same type | 
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|  | 449 | } | 
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|  | 450 |  | 
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| [02fdb8e] | 451 | bool needsBoxing( Type * param, Type * arg, const TyVarMap &exprTyVars, const TypeSubstitution * env ) { | 
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| [ae1b9ea] | 452 | // is parameter is not polymorphic, don't need to box | 
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|  | 453 | if ( ! isPolyType( param, exprTyVars ) ) return false; | 
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|  | 454 | Type * newType = arg->clone(); | 
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|  | 455 | if ( env ) env->apply( newType ); | 
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|  | 456 | std::unique_ptr<Type> manager( newType ); | 
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|  | 457 | // if the argument's type is polymorphic, we don't need to box again! | 
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|  | 458 | return ! isPolyType( newType ); | 
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|  | 459 | } | 
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|  | 460 |  | 
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| [02fdb8e] | 461 | bool needsBoxing( Type * param, Type * arg, ApplicationExpr * appExpr, const TypeSubstitution * env ) { | 
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| [ae1b9ea] | 462 | FunctionType * function = getFunctionType( appExpr->function->result ); | 
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|  | 463 | assertf( function, "ApplicationExpr has non-function type: %s", toString( appExpr->function->result ).c_str() ); | 
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|  | 464 | TyVarMap exprTyVars( TypeDecl::Data{} ); | 
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|  | 465 | makeTyVarMap( function, exprTyVars ); | 
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|  | 466 | return needsBoxing( param, arg, exprTyVars, env ); | 
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|  | 467 | } | 
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|  | 468 |  | 
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| [2c57025] | 469 | void addToTyVarMap( TypeDecl * tyVar, TyVarMap &tyVarMap ) { | 
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| [7ba1324] | 470 | tyVarMap.insert( tyVar->name, TypeDecl::Data{ tyVar } ); | 
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| [2c57025] | 471 | } | 
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|  | 472 |  | 
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| [aadc9a4] | 473 | void makeTyVarMap( Type *type, TyVarMap &tyVarMap ) { | 
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| [8c49c0e] | 474 | for ( Type::ForallList::const_iterator tyVar = type->get_forall().begin(); tyVar != type->get_forall().end(); ++tyVar ) { | 
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| [aadc9a4] | 475 | assert( *tyVar ); | 
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| [2c57025] | 476 | addToTyVarMap( *tyVar, tyVarMap ); | 
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| [aadc9a4] | 477 | } | 
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|  | 478 | if ( PointerType *pointer = dynamic_cast< PointerType* >( type ) ) { | 
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|  | 479 | makeTyVarMap( pointer->get_base(), tyVarMap ); | 
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|  | 480 | } | 
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|  | 481 | } | 
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| [540de412] | 482 |  | 
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| [01aeade] | 483 | void printTyVarMap( std::ostream &os, const TyVarMap &tyVarMap ) { | 
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|  | 484 | for ( TyVarMap::const_iterator i = tyVarMap.begin(); i != tyVarMap.end(); ++i ) { | 
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|  | 485 | os << i->first << " (" << i->second << ") "; | 
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|  | 486 | } // for | 
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|  | 487 | os << std::endl; | 
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|  | 488 | } | 
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| [ffad73a] | 489 |  | 
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| [51b73452] | 490 | } // namespace GenPoly | 
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| [01aeade] | 491 |  | 
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| [51587aa] | 492 | // Local Variables: // | 
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|  | 493 | // tab-width: 4 // | 
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|  | 494 | // mode: c++ // | 
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|  | 495 | // compile-command: "make install" // | 
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|  | 496 | // End: // | 
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