[51b7345] | 1 | /* |
---|
| 2 | * This file is part of the Cforall project |
---|
| 3 | * |
---|
| 4 | * $Id: CopyParams.cc,v 1.3 2005/08/29 20:14:13 rcbilson Exp $ |
---|
| 5 | * |
---|
| 6 | */ |
---|
| 7 | |
---|
| 8 | #include <set> |
---|
| 9 | #include <map> |
---|
| 10 | #include <cassert> |
---|
| 11 | |
---|
| 12 | #include "SynTree/Declaration.h" |
---|
| 13 | #include "SynTree/Type.h" |
---|
| 14 | #include "SynTree/Expression.h" |
---|
| 15 | #include "SynTree/Statement.h" |
---|
| 16 | #include "SynTree/Visitor.h" |
---|
| 17 | #include "UniqueName.h" |
---|
| 18 | |
---|
| 19 | |
---|
| 20 | namespace GenPoly { |
---|
| 21 | |
---|
| 22 | class CopyParams : public Visitor |
---|
| 23 | { |
---|
| 24 | public: |
---|
| 25 | CopyParams(); |
---|
| 26 | |
---|
| 27 | virtual void visit( FunctionDecl *funcDecl ); |
---|
| 28 | virtual void visit( AddressExpr *addrExpr ); |
---|
| 29 | |
---|
| 30 | private: |
---|
| 31 | std::set< UniqueId > modVars; |
---|
| 32 | UniqueName namer; |
---|
| 33 | }; |
---|
| 34 | |
---|
| 35 | void |
---|
| 36 | copyParams( std::list< Declaration* > &translationUnit ) |
---|
| 37 | { |
---|
| 38 | CopyParams copier; |
---|
| 39 | acceptAll( translationUnit, copier ); |
---|
| 40 | } |
---|
| 41 | |
---|
| 42 | CopyParams::CopyParams() |
---|
| 43 | : namer( "_cp" ) |
---|
| 44 | { |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | static const std::list< Label > noLabels; |
---|
| 48 | |
---|
| 49 | void |
---|
| 50 | CopyParams::visit( FunctionDecl *funcDecl ) |
---|
| 51 | { |
---|
| 52 | if( funcDecl->get_statements() ) { |
---|
| 53 | funcDecl->get_statements()->accept( *this ); |
---|
| 54 | |
---|
| 55 | if( !modVars.empty() ) { |
---|
| 56 | std::map< std::string, DeclarationWithType* > assignOps; |
---|
| 57 | // assume that the assignment operator is the first assert param after any "type" parameter |
---|
| 58 | for( std::list< TypeDecl* >::const_iterator tyVar = funcDecl->get_functionType()->get_forall().begin(); tyVar != funcDecl->get_functionType()->get_forall().end(); ++tyVar ) { |
---|
| 59 | if( (*tyVar)->get_kind() == TypeDecl::Any ) { |
---|
| 60 | assert( !(*tyVar)->get_assertions().empty() ); |
---|
| 61 | assignOps[ (*tyVar)->get_name() ] = (*tyVar)->get_assertions().front(); |
---|
| 62 | } |
---|
| 63 | } |
---|
| 64 | for( std::list< DeclarationWithType* >::iterator param = funcDecl->get_functionType()->get_parameters().begin(); param != funcDecl->get_functionType()->get_parameters().end(); ++param ) { |
---|
| 65 | std::set< UniqueId >::const_iterator var = modVars.find( (*param)->get_uniqueId() ); |
---|
| 66 | if( var != modVars.end() ) { |
---|
| 67 | TypeInstType *typeInst = dynamic_cast< TypeInstType* >( (*param)->get_type() ); |
---|
| 68 | assert( typeInst ); |
---|
| 69 | std::map< std::string, DeclarationWithType* >::const_iterator assignOp = assignOps.find( typeInst->get_name() ); |
---|
| 70 | if( assignOp != assignOps.end() ) { |
---|
| 71 | DeclarationWithType *oldParam = *param; |
---|
| 72 | *param = (*param)->clone(); |
---|
| 73 | (*param)->set_name( namer.newName() ); |
---|
| 74 | ApplicationExpr *assign = new ApplicationExpr( new VariableExpr( assignOp->second ) ); |
---|
| 75 | assign->get_args().push_back( new VariableExpr( oldParam ) ); |
---|
| 76 | assign->get_args().push_back( new VariableExpr( *param ) ); |
---|
| 77 | funcDecl->get_statements()->get_kids().push_front( new ExprStmt( noLabels, assign ) ); |
---|
| 78 | funcDecl->get_statements()->get_kids().push_front( new DeclStmt( noLabels, oldParam ) ); |
---|
| 79 | } |
---|
| 80 | modVars.erase( var ); |
---|
| 81 | } |
---|
| 82 | } |
---|
| 83 | } |
---|
| 84 | } |
---|
| 85 | } |
---|
| 86 | |
---|
| 87 | void |
---|
| 88 | CopyParams::visit( AddressExpr *addrExpr ) |
---|
| 89 | { |
---|
| 90 | if( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( addrExpr->get_arg() ) ) { |
---|
| 91 | if( dynamic_cast< TypeInstType* >( varExpr->get_var()->get_type() ) ) { |
---|
| 92 | modVars.insert( varExpr->get_var()->get_uniqueId() ); |
---|
| 93 | } |
---|
| 94 | } |
---|
| 95 | } |
---|
| 96 | |
---|
| 97 | } // namespace GenPoly |
---|