[51b7345] | 1 | #include <algorithm> |
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| 2 | #include <iostream> |
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| 3 | #include <cassert> |
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| 4 | #include <list> |
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| 5 | |
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| 6 | #include "SynTree/Type.h" |
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| 7 | #include "SynTree/Declaration.h" |
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| 8 | #include "SynTree/Statement.h" |
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| 9 | #include "SynTree/Expression.h" |
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| 10 | #include "SynTree/Initializer.h" |
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| 11 | |
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| 12 | #include "utility.h" |
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| 13 | #include "UnimplementedError.h" |
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| 14 | |
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| 15 | #include "CodeGenerator2.h" |
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| 16 | #include "OperatorTable.h" |
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| 17 | #include "GenType.h" |
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| 18 | |
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| 19 | using namespace std; |
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| 20 | |
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| 21 | namespace CodeGen { |
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[17cd4eb] | 22 | int CodeGenerator2::tabsize = 4; |
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[51b7345] | 23 | |
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[17cd4eb] | 24 | CodeGenerator2::CodeGenerator2( std::ostream &os ) : cur_indent( 0 ), insideFunction( false ), before( os ), after() { } |
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[51b7345] | 25 | |
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[17cd4eb] | 26 | CodeGenerator2::CodeGenerator2( std::ostream &os, std::string init, int indent, bool infunp ) |
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| 27 | : cur_indent( indent ), insideFunction( infunp ), before( os ) |
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| 28 | { |
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| 29 | //before << std::string( init ); |
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[51b7345] | 30 | } |
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| 31 | |
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[17cd4eb] | 32 | CodeGenerator2::CodeGenerator2( std::ostream &os, char *init, int indent, bool infunp ) |
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| 33 | : cur_indent( indent ), insideFunction( infunp ), before( os ) |
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| 34 | { |
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| 35 | //before << std::string( init ); |
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[51b7345] | 36 | } |
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| 37 | |
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[17cd4eb] | 38 | string mangleName( DeclarationWithType *decl ) { |
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| 39 | if ( decl->get_mangleName() != "" ) { |
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| 40 | return decl->get_mangleName(); |
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| 41 | } else { |
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| 42 | return decl->get_name(); |
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| 43 | } // if |
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| 44 | } |
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| 45 | |
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| 46 | //*** Declarations |
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| 47 | void CodeGenerator2::visit( FunctionDecl *functionDecl ) { |
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| 48 | handleStorageClass( functionDecl ); |
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| 49 | before << genType( functionDecl->get_functionType(), mangleName( functionDecl ) ); |
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| 50 | |
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| 51 | // how to get this to the Functype? |
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| 52 | std::list< Declaration * > olds = functionDecl->get_oldDecls(); |
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| 53 | if ( ! olds.empty() ) { |
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| 54 | before << " /* function has old declaration */"; |
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| 55 | } // if |
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| 56 | |
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| 57 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
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| 58 | if ( functionDecl->get_statements() ) { |
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| 59 | functionDecl->get_statements()->accept(*this ); |
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| 60 | } // if |
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[51b7345] | 61 | } |
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| 62 | |
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[17cd4eb] | 63 | void CodeGenerator2::visit( ObjectDecl *objectDecl ) { |
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| 64 | handleStorageClass( objectDecl ); |
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| 65 | before << genType( objectDecl->get_type(), mangleName( objectDecl ) ); |
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[51b7345] | 66 | |
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[17cd4eb] | 67 | if ( objectDecl->get_init() ) { |
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| 68 | before << " = "; |
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| 69 | objectDecl->get_init()->accept( *this ); |
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| 70 | } // if |
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| 71 | if ( objectDecl->get_bitfieldWidth() ) { |
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| 72 | before << ":"; |
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| 73 | objectDecl->get_bitfieldWidth()->accept( *this ); |
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| 74 | } // if |
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[51b7345] | 75 | } |
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| 76 | |
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[17cd4eb] | 77 | void CodeGenerator2::handleAggregate( AggregateDecl *aggDecl ) { |
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| 78 | if ( aggDecl->get_name() != "" ) |
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| 79 | before << aggDecl->get_name(); |
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[51b7345] | 80 | |
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[17cd4eb] | 81 | std::list< Declaration * > &memb = aggDecl->get_members(); |
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[51b7345] | 82 | |
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[17cd4eb] | 83 | if ( ! memb.empty() ) { |
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| 84 | before << endl << string( cur_indent, ' ' ) << "{" << endl; |
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[51b7345] | 85 | |
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[17cd4eb] | 86 | cur_indent += CodeGenerator2::tabsize; |
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| 87 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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| 88 | before << string( cur_indent, ' ' ); |
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| 89 | (*i)->accept(*this ); |
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| 90 | before << ";" << endl; |
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| 91 | } |
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[51b7345] | 92 | |
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[17cd4eb] | 93 | cur_indent -= CodeGenerator2::tabsize; |
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[51b7345] | 94 | |
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[17cd4eb] | 95 | before << string( cur_indent, ' ' ) << "}"; |
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| 96 | } // if |
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[51b7345] | 97 | } |
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| 98 | |
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[17cd4eb] | 99 | void CodeGenerator2::visit( StructDecl *structDecl ) { |
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| 100 | before << "struct "; |
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| 101 | handleAggregate( structDecl ); |
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| 102 | } |
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[51b7345] | 103 | |
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[17cd4eb] | 104 | void CodeGenerator2::visit( UnionDecl *aggregateDecl ) { |
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| 105 | before << "union "; |
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| 106 | handleAggregate( aggregateDecl ); |
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| 107 | } |
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[51b7345] | 108 | |
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[17cd4eb] | 109 | void CodeGenerator2::visit( EnumDecl *aggDecl ) { |
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| 110 | before << "enum "; |
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[51b7345] | 111 | |
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[17cd4eb] | 112 | if ( aggDecl->get_name() != "" ) |
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| 113 | before << aggDecl->get_name(); |
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[51b7345] | 114 | |
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[17cd4eb] | 115 | std::list< Declaration* > &memb = aggDecl->get_members(); |
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| 116 | |
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| 117 | if ( ! memb.empty() ) { |
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| 118 | before << endl << "{" << endl; |
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| 119 | |
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| 120 | cur_indent += CodeGenerator2::tabsize; |
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| 121 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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| 122 | ObjectDecl *obj = dynamic_cast< ObjectDecl* >( *i ); |
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| 123 | assert( obj ); |
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| 124 | before << string( cur_indent, ' ' ) << mangleName( obj ); |
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| 125 | if ( obj->get_init() ) { |
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| 126 | before << " = "; |
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| 127 | obj->get_init()->accept(*this ); |
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| 128 | } // if |
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| 129 | before << "," << endl; |
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| 130 | } |
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| 131 | |
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| 132 | cur_indent -= CodeGenerator2::tabsize; |
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| 133 | |
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| 134 | before << "}" << endl; |
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| 135 | } // if |
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[51b7345] | 136 | } |
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| 137 | |
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[17cd4eb] | 138 | void CodeGenerator2::visit( ContextDecl *aggregateDecl ) {} |
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[51b7345] | 139 | |
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[17cd4eb] | 140 | void CodeGenerator2::visit( TypedefDecl *typeDecl ) { |
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| 141 | before << "typedef "; |
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| 142 | before << genType( typeDecl->get_base(), typeDecl->get_name() ); |
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| 143 | } |
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[51b7345] | 144 | |
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[17cd4eb] | 145 | void CodeGenerator2::visit( TypeDecl *typeDecl ) { |
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| 146 | // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes, |
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| 147 | // still to be done |
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| 148 | before << "extern unsigned long " << typeDecl->get_name(); |
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| 149 | if ( typeDecl->get_base() ) { |
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| 150 | before << " = sizeof( " << genType( typeDecl->get_base(), "" ) << " )"; |
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| 151 | } // if |
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| 152 | } |
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| 153 | |
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| 154 | void CodeGenerator2::visit( SingleInit *init ) { |
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| 155 | init->get_value()->accept( *this ); |
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| 156 | } |
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| 157 | |
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| 158 | void CodeGenerator2::visit( ListInit *init ) { |
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| 159 | before << "{ "; |
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| 160 | genCommaList( init->begin_initializers(), init->end_initializers() ); |
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| 161 | before << " }"; |
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| 162 | } |
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| 163 | |
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| 164 | void CodeGenerator2::visit( Constant *constant ) { |
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| 165 | before << constant->get_value() ; |
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| 166 | } |
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| 167 | |
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| 168 | //*** Expressions |
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| 169 | void CodeGenerator2::visit( ApplicationExpr *applicationExpr ) { |
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| 170 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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| 171 | OperatorInfo opInfo; |
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| 172 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 173 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 174 | switch ( opInfo.type ) { |
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| 175 | case OT_PREFIXASSIGN: |
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| 176 | case OT_POSTFIXASSIGN: |
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| 177 | case OT_INFIXASSIGN: |
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| 178 | { |
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| 179 | assert( arg != applicationExpr->get_args().end() ); |
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| 180 | if ( AddressExpr *addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
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[51b7345] | 181 | |
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[17cd4eb] | 182 | *arg = addrExpr->get_arg(); |
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| 183 | } else { |
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| 184 | UntypedExpr *newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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| 185 | newExpr->get_args().push_back( *arg ); |
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| 186 | *arg = newExpr; |
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| 187 | } // if |
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| 188 | break; |
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| 189 | } |
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[51b7345] | 190 | |
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[17cd4eb] | 191 | default: |
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| 192 | // do nothing |
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| 193 | ; |
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| 194 | } |
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[51b7345] | 195 | |
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[17cd4eb] | 196 | switch ( opInfo.type ) { |
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| 197 | case OT_INDEX: |
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| 198 | assert( applicationExpr->get_args().size() == 2 ); |
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| 199 | (*arg++)->accept( *this ); |
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| 200 | before << "["; |
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| 201 | (*arg)->accept( *this ); |
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| 202 | before << "]"; |
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| 203 | break; |
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[51b7345] | 204 | |
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[17cd4eb] | 205 | case OT_CALL: |
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| 206 | // there are no intrinsic definitions of the function call operator |
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| 207 | assert( false ); |
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| 208 | break; |
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[51b7345] | 209 | |
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[17cd4eb] | 210 | case OT_PREFIX: |
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| 211 | case OT_PREFIXASSIGN: |
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| 212 | assert( applicationExpr->get_args().size() == 1 ); |
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| 213 | before << "("; |
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| 214 | before << opInfo.symbol; |
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| 215 | (*arg)->accept( *this ); |
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| 216 | before << ")"; |
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| 217 | break; |
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[51b7345] | 218 | |
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[17cd4eb] | 219 | case OT_POSTFIX: |
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| 220 | case OT_POSTFIXASSIGN: |
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| 221 | assert( applicationExpr->get_args().size() == 1 ); |
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| 222 | (*arg)->accept( *this ); |
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| 223 | before << opInfo.symbol; |
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| 224 | break; |
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| 225 | |
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| 226 | case OT_INFIX: |
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| 227 | case OT_INFIXASSIGN: |
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| 228 | assert( applicationExpr->get_args().size() == 2 ); |
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| 229 | before << "("; |
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| 230 | (*arg++)->accept( *this ); |
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| 231 | before << opInfo.symbol; |
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| 232 | (*arg)->accept( *this ); |
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| 233 | before << ")"; |
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| 234 | break; |
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[51b7345] | 235 | |
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[17cd4eb] | 236 | case OT_CONSTANT: |
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| 237 | // there are no intrinsic definitions of 0 or 1 as functions |
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| 238 | assert( false ); |
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| 239 | } |
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| 240 | } else { |
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| 241 | varExpr->accept( *this ); |
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| 242 | before << "("; |
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| 243 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
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| 244 | before << ")"; |
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| 245 | } // if |
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| 246 | } else { |
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| 247 | applicationExpr->get_function()->accept( *this ); |
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| 248 | before << "("; |
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| 249 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
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| 250 | before << ")"; |
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| 251 | } // if |
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| 252 | } |
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[51b7345] | 253 | |
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[17cd4eb] | 254 | void CodeGenerator2::visit( UntypedExpr *untypedExpr ) { |
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| 255 | if ( NameExpr *nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
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| 256 | OperatorInfo opInfo; |
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| 257 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
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| 258 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
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| 259 | switch ( opInfo.type ) { |
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| 260 | case OT_INDEX: |
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| 261 | assert( untypedExpr->get_args().size() == 2 ); |
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| 262 | (*arg++)->accept( *this ); |
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| 263 | before << "["; |
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| 264 | (*arg)->accept( *this ); |
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| 265 | before << "]"; |
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| 266 | break; |
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[51b7345] | 267 | |
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[17cd4eb] | 268 | case OT_CALL: |
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| 269 | assert( false ); |
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| 270 | break; |
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[51b7345] | 271 | |
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[17cd4eb] | 272 | case OT_PREFIX: |
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| 273 | case OT_PREFIXASSIGN: |
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| 274 | assert( untypedExpr->get_args().size() == 1 ); |
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| 275 | before << "("; |
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| 276 | before << opInfo.symbol; |
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| 277 | (*arg)->accept( *this ); |
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| 278 | before << ")"; |
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| 279 | break; |
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[51b7345] | 280 | |
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[17cd4eb] | 281 | case OT_POSTFIX: |
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| 282 | case OT_POSTFIXASSIGN: |
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| 283 | assert( untypedExpr->get_args().size() == 1 ); |
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| 284 | (*arg)->accept( *this ); |
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| 285 | before << opInfo.symbol; |
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| 286 | break; |
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[51b7345] | 287 | |
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[17cd4eb] | 288 | case OT_INFIX: |
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| 289 | case OT_INFIXASSIGN: |
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| 290 | assert( untypedExpr->get_args().size() == 2 ); |
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| 291 | before << "("; |
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| 292 | (*arg++)->accept( *this ); |
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| 293 | before << opInfo.symbol; |
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| 294 | (*arg)->accept( *this ); |
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| 295 | before << ")"; |
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| 296 | break; |
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[51b7345] | 297 | |
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[17cd4eb] | 298 | case OT_CONSTANT: |
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| 299 | // there are no intrinsic definitions of 0 or 1 as functions |
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| 300 | assert( false ); |
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| 301 | } |
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| 302 | } else { |
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| 303 | nameExpr->accept( *this ); |
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| 304 | before << "("; |
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| 305 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
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| 306 | before << ")"; |
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| 307 | } // if |
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| 308 | } else { |
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| 309 | untypedExpr->get_function()->accept( *this ); |
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| 310 | before << "("; |
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| 311 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
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| 312 | before << ")"; |
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| 313 | } // if |
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| 314 | } |
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[51b7345] | 315 | |
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[17cd4eb] | 316 | void CodeGenerator2::visit( NameExpr *nameExpr ) { |
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| 317 | OperatorInfo opInfo; |
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| 318 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
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| 319 | assert( opInfo.type == OT_CONSTANT ); |
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| 320 | before << opInfo.symbol; |
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| 321 | } else { |
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| 322 | before << nameExpr->get_name(); |
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| 323 | } // if |
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| 324 | } |
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[51b7345] | 325 | |
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[17cd4eb] | 326 | void CodeGenerator2::visit( AddressExpr *addressExpr ) { |
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| 327 | before << "(&"; |
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| 328 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
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| 329 | if ( VariableExpr *variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
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| 330 | before << mangleName( variableExpr->get_var() ); |
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| 331 | } else { |
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| 332 | addressExpr->get_arg()->accept( *this ); |
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| 333 | } // if |
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| 334 | before << ")"; |
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| 335 | } |
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| 336 | |
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| 337 | void CodeGenerator2::visit( CastExpr *castExpr ) { |
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| 338 | before << "(("; |
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| 339 | if ( castExpr->get_results().empty() ) { |
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| 340 | before << "void" ; |
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| 341 | } else { |
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| 342 | before << genType( castExpr->get_results().front(), "" ); |
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| 343 | } // if |
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| 344 | before << ")"; |
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| 345 | castExpr->get_arg()->accept( *this ); |
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| 346 | before << ")"; |
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| 347 | } |
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[51b7345] | 348 | |
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[17cd4eb] | 349 | void CodeGenerator2::visit( UntypedMemberExpr *memberExpr ) { |
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| 350 | assert( false ); |
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| 351 | } |
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[51b7345] | 352 | |
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[17cd4eb] | 353 | void CodeGenerator2::visit( MemberExpr *memberExpr ) { |
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| 354 | memberExpr->get_aggregate()->accept( *this ); |
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| 355 | before << "." << mangleName( memberExpr->get_member() ); |
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| 356 | } |
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[51b7345] | 357 | |
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[17cd4eb] | 358 | void CodeGenerator2::visit( VariableExpr *variableExpr ) { |
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| 359 | OperatorInfo opInfo; |
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| 360 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
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| 361 | before << opInfo.symbol; |
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| 362 | } else { |
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| 363 | before << mangleName( variableExpr->get_var() ); |
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| 364 | } // if |
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| 365 | } |
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[51b7345] | 366 | |
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[17cd4eb] | 367 | void CodeGenerator2::visit( ConstantExpr *constantExpr ) { |
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| 368 | assert( constantExpr->get_constant() ); |
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| 369 | constantExpr->get_constant()->accept( *this ); |
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| 370 | } |
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[51b7345] | 371 | |
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[17cd4eb] | 372 | void CodeGenerator2::visit( SizeofExpr *sizeofExpr ) { |
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| 373 | before << "sizeof("; |
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| 374 | if ( sizeofExpr->get_isType() ) { |
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| 375 | before << genType( sizeofExpr->get_type(), "" ); |
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| 376 | } else { |
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| 377 | sizeofExpr->get_expr()->accept( *this ); |
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| 378 | } // if |
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| 379 | before << ")"; |
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| 380 | } |
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[51b7345] | 381 | |
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[17cd4eb] | 382 | void CodeGenerator2::visit( LogicalExpr *logicalExpr ) { |
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| 383 | before << "("; |
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| 384 | logicalExpr->get_arg1()->accept( *this ); |
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| 385 | if ( logicalExpr->get_isAnd() ) { |
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| 386 | before << " && "; |
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| 387 | } else { |
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| 388 | before << " || "; |
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| 389 | } // if |
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| 390 | logicalExpr->get_arg2()->accept( *this ); |
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| 391 | before << ")"; |
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| 392 | } |
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[51b7345] | 393 | |
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[17cd4eb] | 394 | void CodeGenerator2::visit( ConditionalExpr *conditionalExpr ) { |
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| 395 | before << "("; |
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| 396 | conditionalExpr->get_arg1()->accept( *this ); |
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| 397 | before << " ? "; |
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| 398 | conditionalExpr->get_arg2()->accept( *this ); |
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| 399 | before << " : "; |
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| 400 | conditionalExpr->get_arg3()->accept( *this ); |
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| 401 | before << ")"; |
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| 402 | } |
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[51b7345] | 403 | |
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[17cd4eb] | 404 | void CodeGenerator2::visit( CommaExpr *commaExpr ) { |
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| 405 | before << "("; |
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| 406 | commaExpr->get_arg1()->accept( *this ); |
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| 407 | before << " , "; |
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| 408 | commaExpr->get_arg2()->accept( *this ); |
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| 409 | before << ")"; |
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| 410 | } |
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[51b7345] | 411 | |
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[17cd4eb] | 412 | void CodeGenerator2::visit( TupleExpr *tupleExpr ) {} |
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[51b7345] | 413 | |
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[17cd4eb] | 414 | void CodeGenerator2::visit( TypeExpr *typeExpr ) {} |
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[51b7345] | 415 | |
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| 416 | |
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[17cd4eb] | 417 | //*** Statements |
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| 418 | void CodeGenerator2::visit( CompoundStmt *compoundStmt ) { |
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| 419 | std::list<Statement*> ks = compoundStmt->get_kids(); |
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[51b7345] | 420 | |
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[17cd4eb] | 421 | before << endl << string( cur_indent, ' ' ) << "{" << endl; |
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[51b7345] | 422 | |
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[17cd4eb] | 423 | cur_indent += CodeGenerator2::tabsize; |
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[51b7345] | 424 | |
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[17cd4eb] | 425 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++) { |
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| 426 | before << string( cur_indent, ' ' ) << printLabels( (*i)->get_labels() ) ; |
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| 427 | (*i)->accept(*this ); |
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| 428 | shift_left(); |
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| 429 | before << endl; |
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| 430 | } |
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| 431 | cur_indent -= CodeGenerator2::tabsize; |
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[51b7345] | 432 | |
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[17cd4eb] | 433 | before << string( cur_indent, ' ' ) << "}" << endl; |
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[51b7345] | 434 | } |
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| 435 | |
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[17cd4eb] | 436 | void CodeGenerator2::visit( ExprStmt *exprStmt ) { |
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| 437 | if ( exprStmt != 0 ) { |
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| 438 | exprStmt->get_expr()->accept( *this ); |
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| 439 | shift_left(); |
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| 440 | before << ";" ; |
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| 441 | } // if |
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[51b7345] | 442 | } |
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| 443 | |
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[17cd4eb] | 444 | void CodeGenerator2::visit( IfStmt *ifStmt ) { |
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| 445 | before << "if ("; |
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| 446 | ifStmt->get_condition()->accept(*this ); |
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| 447 | after += ")\n"; |
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| 448 | shift_left(); |
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| 449 | |
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| 450 | cur_indent += CodeGenerator2::tabsize; |
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| 451 | before << string( cur_indent, ' ' ); |
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| 452 | ifStmt->get_thenPart()->accept(*this ); |
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| 453 | cur_indent -= CodeGenerator2::tabsize; |
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| 454 | shift_left(); before << endl; |
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| 455 | |
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| 456 | if ( ifStmt->get_elsePart() != 0) { |
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| 457 | before << string( cur_indent, ' ' ) << " else " << endl ; |
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| 458 | |
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| 459 | cur_indent += CodeGenerator2::tabsize; |
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| 460 | ifStmt->get_elsePart()->accept(*this ); |
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| 461 | cur_indent -= CodeGenerator2::tabsize; |
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| 462 | } // if |
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| 463 | } |
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[51b7345] | 464 | |
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[17cd4eb] | 465 | void CodeGenerator2::visit( SwitchStmt *switchStmt ) { |
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| 466 | //before << /* "\r" << */ string( cur_indent, ' ' ) << CodeGenerator2::printLabels( switchStmt->get_labels() ) |
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| 467 | before << "switch (" ; |
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| 468 | switchStmt->get_condition()->accept(*this ); |
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| 469 | after += ")\n"; |
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| 470 | shift_left(); |
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| 471 | |
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| 472 | before << string( cur_indent, ' ' ) << "{" << std::endl; |
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| 473 | cur_indent += CodeGenerator2::tabsize; |
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| 474 | |
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| 475 | std::list< Statement * > stmts = switchStmt->get_branches(); |
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| 476 | bool lastBreak = false; |
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| 477 | |
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| 478 | // horrible, horrible hack |
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[6c3744e] | 479 | if ( dynamic_cast<BranchStmt *>( stmts.back() ) != 0 ) { |
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[17cd4eb] | 480 | lastBreak = true; |
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| 481 | stmts.pop_back(); |
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| 482 | } // if |
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| 483 | acceptAll( stmts, *this ); |
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| 484 | if ( lastBreak ) { |
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| 485 | Statement *st = switchStmt->get_branches().back(); |
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| 486 | before << CodeGenerator2::printLabels( st->get_labels()); |
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[6c3744e] | 487 | st->accept( *this ); |
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[17cd4eb] | 488 | } // if |
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| 489 | |
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| 490 | cur_indent -= CodeGenerator2::tabsize; |
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[51b7345] | 491 | |
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[17cd4eb] | 492 | before << /* "\r" << */ string( cur_indent, ' ' ) << "}" << endl ; |
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[51b7345] | 493 | } |
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[17cd4eb] | 494 | |
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| 495 | void CodeGenerator2::visit( CaseStmt *caseStmt ) { |
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| 496 | before << string( cur_indent, ' ' ); |
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| 497 | if ( caseStmt->isDefault()) |
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| 498 | before << "default " ; |
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| 499 | else { |
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| 500 | before << "case " ; |
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| 501 | caseStmt->get_condition()->accept(*this ); |
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| 502 | } // if |
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| 503 | after += ":\n"; |
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| 504 | shift_left(); |
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| 505 | |
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| 506 | std::list<Statement *> sts = caseStmt->get_statements(); |
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| 507 | |
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| 508 | cur_indent += CodeGenerator2::tabsize; |
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| 509 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
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| 510 | before << /* "\r" << */ string( cur_indent, ' ' ) << printLabels( (*i)->get_labels() ) ; |
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| 511 | (*i)->accept(*this ); |
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| 512 | shift_left(); |
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| 513 | before << ";" << endl; |
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| 514 | } |
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| 515 | cur_indent -= CodeGenerator2::tabsize; |
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[51b7345] | 516 | } |
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[17cd4eb] | 517 | |
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| 518 | void CodeGenerator2::visit( BranchStmt *branchStmt ) { |
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| 519 | switch ( branchStmt->get_type()) { |
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| 520 | case BranchStmt::Goto: |
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| 521 | if ( ! branchStmt->get_target().empty() ) |
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| 522 | before << "goto " << branchStmt->get_target(); |
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| 523 | else { |
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| 524 | if ( branchStmt->get_computedTarget() != 0 ) { |
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| 525 | before << "goto *"; |
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[6c3744e] | 526 | branchStmt->get_computedTarget()->accept( *this ); |
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[17cd4eb] | 527 | } // if |
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| 528 | } // if |
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| 529 | break; |
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| 530 | case BranchStmt::Break: |
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| 531 | before << "break"; |
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| 532 | break; |
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| 533 | case BranchStmt::Continue: |
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| 534 | before << "continue"; |
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| 535 | break; |
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[51b7345] | 536 | } |
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[17cd4eb] | 537 | before << ";"; |
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[51b7345] | 538 | } |
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| 539 | |
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| 540 | |
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[17cd4eb] | 541 | void CodeGenerator2::visit( ReturnStmt *returnStmt ) { |
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| 542 | before << "return "; |
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[51b7345] | 543 | |
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[17cd4eb] | 544 | // xxx -- check for null expression; |
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| 545 | if ( returnStmt->get_expr() ) { |
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| 546 | returnStmt->get_expr()->accept( *this ); |
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| 547 | } // if |
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| 548 | after += ";"; |
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[51b7345] | 549 | } |
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| 550 | |
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[17cd4eb] | 551 | void CodeGenerator2::visit( WhileStmt *whileStmt ) { |
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| 552 | if ( whileStmt->get_isDoWhile() ) |
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| 553 | before << "do" ; |
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| 554 | else { |
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| 555 | before << "while(" ; |
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| 556 | whileStmt->get_condition()->accept(*this ); |
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| 557 | after += ")"; |
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| 558 | } // if |
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| 559 | after += "{\n"; |
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| 560 | shift_left(); |
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[51b7345] | 561 | |
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[17cd4eb] | 562 | whileStmt->get_body()->accept( *this ); |
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[51b7345] | 563 | |
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[17cd4eb] | 564 | before << /* "\r" << */ string( cur_indent, ' ' ) << "}" ; |
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[51b7345] | 565 | |
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[17cd4eb] | 566 | if ( whileStmt->get_isDoWhile() ) { |
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| 567 | before << " while(" ; |
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| 568 | whileStmt->get_condition()->accept(*this ); |
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| 569 | after += ");"; |
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| 570 | } // if |
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| 571 | |
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| 572 | after += "\n"; |
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[51b7345] | 573 | } |
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| 574 | |
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[17cd4eb] | 575 | void CodeGenerator2::visit( ForStmt *forStmt ) { |
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| 576 | before << "for ("; |
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| 577 | |
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| 578 | if ( forStmt->get_initialization() != 0 ) |
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| 579 | forStmt->get_initialization()->accept( *this ); |
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| 580 | else |
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| 581 | before << ";"; |
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| 582 | shift_left(); |
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| 583 | |
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| 584 | if ( forStmt->get_condition() != 0 ) |
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| 585 | forStmt->get_condition()->accept( *this ); |
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| 586 | shift_left(); before << ";"; |
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| 587 | |
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| 588 | if ( forStmt->get_increment() != 0 ) |
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| 589 | forStmt->get_increment()->accept( *this ); |
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| 590 | shift_left(); before << ")" << endl; |
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| 591 | |
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| 592 | if ( forStmt->get_body() != 0 ) { |
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| 593 | cur_indent += CodeGenerator2::tabsize; |
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| 594 | before << string( cur_indent, ' ' ) << CodeGenerator2::printLabels( forStmt->get_body()->get_labels() ); |
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| 595 | forStmt->get_body()->accept( *this ); |
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| 596 | cur_indent -= CodeGenerator2::tabsize; |
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| 597 | } // if |
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| 598 | } |
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[51b7345] | 599 | |
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[17cd4eb] | 600 | void CodeGenerator2::visit( NullStmt *nullStmt ) { |
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| 601 | //before << /* "\r" << */ string( cur_indent, ' ' ) << CodeGenerator2::printLabels( nullStmt->get_labels() ); |
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| 602 | before << "/* null statement */ ;"; |
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| 603 | } |
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[51b7345] | 604 | |
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[17cd4eb] | 605 | void CodeGenerator2::visit( DeclStmt *declStmt ) { |
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| 606 | declStmt->get_decl()->accept( *this ); |
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| 607 | |
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| 608 | if ( doSemicolon( declStmt->get_decl() ) ) { |
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| 609 | after += ";"; |
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| 610 | } // if |
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| 611 | shift_left(); |
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| 612 | } |
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[51b7345] | 613 | |
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[17cd4eb] | 614 | std::string CodeGenerator2::printLabels( std::list< Label > &l ) { |
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| 615 | std::string str( "" ); |
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| 616 | l.unique(); |
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[51b7345] | 617 | |
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[17cd4eb] | 618 | for ( std::list< Label >::iterator i = l.begin(); i != l.end(); i++ ) |
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| 619 | str += *i + ": "; |
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[51b7345] | 620 | |
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[17cd4eb] | 621 | return str; |
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[51b7345] | 622 | } |
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| 623 | |
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[17cd4eb] | 624 | void CodeGenerator2::shift_left() { |
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| 625 | before << after; |
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| 626 | after = ""; |
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| 627 | } |
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[51b7345] | 628 | |
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[17cd4eb] | 629 | void CodeGenerator2::handleStorageClass( Declaration *decl ) { |
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| 630 | switch ( decl->get_storageClass() ) { |
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| 631 | case Declaration::NoStorageClass: |
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| 632 | break; |
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| 633 | case Declaration::Auto: |
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| 634 | break; |
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| 635 | case Declaration::Static: |
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| 636 | before << "static "; |
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| 637 | break; |
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| 638 | case Declaration::Extern: |
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| 639 | before << "extern "; |
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| 640 | break; |
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| 641 | case Declaration::Register: |
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| 642 | before << "register "; |
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| 643 | break; |
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| 644 | case Declaration::Fortran: |
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| 645 | before << "fortran "; |
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| 646 | break; |
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| 647 | } |
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| 648 | } |
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[51b7345] | 649 | } // namespace CodeGen |
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