[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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[01aeade] | 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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[bdf1954] | 11 | // Last Modified By : Rob Schluntz |
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| 12 | // Last Modified On : Tue Nov 24 15:23:08 2015 |
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| 13 | // Update Count : 11 |
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[51587aa] | 14 | // |
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[51b7345] | 15 | |
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| 16 | #include "GenPoly.h" |
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| 17 | #include "SynTree/Type.h" |
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| 18 | |
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[b1a6d6b] | 19 | #include <iostream> |
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| 20 | using namespace std; |
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[51b7345] | 21 | |
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| 22 | namespace GenPoly { |
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[f8b961b] | 23 | /// A function needs an adapter if it returns a polymorphic value or if any of its |
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| 24 | /// parameters have polymorphic type |
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[e56cfdb0] | 25 | bool needsAdapter( FunctionType *adaptee, const TyVarMap &tyVars ) { |
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| 26 | if ( ! adaptee->get_returnVals().empty() && isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
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| 27 | return true; |
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| 28 | } // if |
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| 29 | for ( std::list< DeclarationWithType* >::const_iterator innerArg = adaptee->get_parameters().begin(); innerArg != adaptee->get_parameters().end(); ++innerArg ) { |
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| 30 | if ( isPolyVal( (*innerArg)->get_type(), tyVars ) ) { |
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| 31 | return true; |
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| 32 | } // if |
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| 33 | } // for |
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| 34 | return false; |
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| 35 | } |
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| 36 | |
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| 37 | bool isPolyRet( FunctionType *function, std::string &name, const TyVarMap &otherTyVars ) { |
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| 38 | bool doTransform = false; |
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| 39 | if ( ! function->get_returnVals().empty() ) { |
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| 40 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( function->get_returnVals().front()->get_type() ) ) { |
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| 41 | |
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| 42 | // figure out if the return type is specified by a type parameter |
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| 43 | for ( std::list< TypeDecl *>::const_iterator tyVar = function->get_forall().begin(); tyVar != function->get_forall().end(); ++tyVar ) { |
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| 44 | if ( (*tyVar)->get_name() == typeInst->get_name() ) { |
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| 45 | doTransform = true; |
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| 46 | name = typeInst->get_name(); |
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| 47 | break; |
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| 48 | } // if |
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| 49 | } // for |
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| 50 | if ( ! doTransform && otherTyVars.find( typeInst->get_name() ) != otherTyVars.end() ) { |
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| 51 | doTransform = true; |
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| 52 | } // if |
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| 53 | } // if |
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| 54 | } // if |
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| 55 | return doTransform; |
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| 56 | } |
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| 57 | |
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| 58 | bool isPolyRet( FunctionType *function, std::string &name ) { |
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| 59 | TyVarMap dummyTyVars; |
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| 60 | return isPolyRet( function, name, dummyTyVars ); |
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[01aeade] | 61 | } |
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[51b7345] | 62 | |
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[e56cfdb0] | 63 | bool isPolyRet( FunctionType *function, const TyVarMap &otherTyVars ) { |
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| 64 | std::string dummyString; |
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| 65 | return isPolyRet( function, dummyString, otherTyVars ); |
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[01aeade] | 66 | } |
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[b1a6d6b] | 67 | |
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[e56cfdb0] | 68 | bool isPolyVal( Type *type, const TyVarMap &tyVars ) { |
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| 69 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
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[01aeade] | 70 | if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { |
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| 71 | return true; |
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| 72 | } // if |
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| 73 | } // if |
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| 74 | return false; |
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| 75 | } |
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[b1a6d6b] | 76 | |
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[bdf1954] | 77 | bool isPolyObj( Type *type, const TyVarMap &tyVars ) { |
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| 78 | if ( isPolyVal( type, tyVars ) ) { |
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| 79 | return true; |
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| 80 | } else if ( PointerType *pt = dynamic_cast<PointerType*>( type ) ) { |
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| 81 | return isPolyObj( pt->get_base(), tyVars ); |
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| 82 | } else { |
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| 83 | return false; |
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| 84 | } |
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| 85 | } |
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| 86 | |
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[01aeade] | 87 | void printTyVarMap( std::ostream &os, const TyVarMap &tyVarMap ) { |
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| 88 | for ( TyVarMap::const_iterator i = tyVarMap.begin(); i != tyVarMap.end(); ++i ) { |
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| 89 | os << i->first << " (" << i->second << ") "; |
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| 90 | } // for |
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| 91 | os << std::endl; |
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| 92 | } |
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[51b7345] | 93 | } // namespace GenPoly |
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[01aeade] | 94 | |
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[51587aa] | 95 | // Local Variables: // |
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| 96 | // tab-width: 4 // |
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| 97 | // mode: c++ // |
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| 98 | // compile-command: "make install" // |
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| 99 | // End: // |
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