[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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| 22 | |
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| 23 | int CodeGenerator2::tabsize = 4; |
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| 24 | |
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| 25 | CodeGenerator2::CodeGenerator2( std::ostream &os ) : cur_indent( 0 ), insideFunction( false ), before(os), after() { } |
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| 26 | |
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| 27 | CodeGenerator2::CodeGenerator2(std::ostream &os, std::string init, int indent, bool infunp ) |
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| 28 | : cur_indent( indent ), insideFunction( infunp ), before(os), after() |
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| 29 | { |
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| 30 | //before << std::string( init ); |
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| 31 | } |
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| 32 | |
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| 33 | CodeGenerator2::CodeGenerator2(std::ostream &os, char *init, int indent, bool infunp ) |
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| 34 | : cur_indent( indent ), insideFunction( infunp ), before(os), after() |
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| 35 | { |
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| 36 | //before << std::string( init ); |
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| 37 | } |
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| 38 | |
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| 39 | CodeGenerator2::~CodeGenerator2() { |
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| 40 | after.freeze( false ); |
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| 41 | } |
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| 42 | |
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| 43 | string |
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| 44 | mangleName( DeclarationWithType *decl ) { |
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| 45 | if( decl->get_mangleName() != "" ) { |
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| 46 | return decl->get_mangleName(); |
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| 47 | } else { |
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| 48 | return decl->get_name(); |
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| 49 | } |
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| 50 | } |
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| 51 | |
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| 52 | //*** Declarations |
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| 53 | void CodeGenerator2::visit(FunctionDecl *functionDecl){ |
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| 54 | |
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| 55 | handleStorageClass( functionDecl ); |
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| 56 | before << genType( functionDecl->get_functionType(), mangleName( functionDecl ) ); |
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| 57 | |
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| 58 | // how to get this to the Functype? |
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| 59 | std::list< Declaration * > olds = functionDecl->get_oldDecls(); |
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| 60 | if( ! olds.empty() ) { |
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| 61 | before << " /* function has old declaration */"; |
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| 62 | } |
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| 63 | |
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| 64 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
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| 65 | if( functionDecl->get_statements() ) { |
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| 66 | functionDecl->get_statements()->accept(*this); |
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| 67 | } |
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| 68 | } |
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| 69 | |
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| 70 | void CodeGenerator2::visit(ObjectDecl *objectDecl){ |
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| 71 | |
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| 72 | handleStorageClass( objectDecl ); |
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| 73 | before << genType( objectDecl->get_type(), mangleName( objectDecl ) ); |
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| 74 | |
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| 75 | if( objectDecl->get_init() ) { |
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| 76 | before << " = "; |
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| 77 | objectDecl->get_init()->accept( *this ); |
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| 78 | } |
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| 79 | if( objectDecl->get_bitfieldWidth() ) { |
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| 80 | before << ":"; |
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| 81 | objectDecl->get_bitfieldWidth()->accept( *this ); |
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| 82 | } |
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| 83 | } |
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| 84 | |
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| 85 | void |
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| 86 | CodeGenerator2::handleAggregate( AggregateDecl *aggDecl ) |
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| 87 | { |
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| 88 | if ( aggDecl->get_name() != "" ) |
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| 89 | before << aggDecl->get_name(); |
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| 90 | |
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| 91 | std::list< Declaration * > &memb = aggDecl->get_members(); |
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| 92 | |
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| 93 | if( ! memb.empty() ){ |
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| 94 | before << endl << string(cur_indent, ' ') << "{" << endl; |
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| 95 | |
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| 96 | cur_indent += CodeGenerator2::tabsize; |
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| 97 | for(std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++){ |
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| 98 | before << string(cur_indent, ' '); |
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| 99 | (*i)->accept(*this); |
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| 100 | before << ";" << endl; |
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| 101 | } |
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| 102 | |
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| 103 | cur_indent -= CodeGenerator2::tabsize; |
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| 104 | |
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| 105 | before << string(cur_indent, ' ') << "}"; |
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| 106 | } |
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| 107 | } |
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| 108 | |
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| 109 | void CodeGenerator2::visit( StructDecl *structDecl ){ |
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| 110 | before << "struct "; |
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| 111 | handleAggregate( structDecl ); |
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| 112 | } |
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| 113 | |
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| 114 | void |
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| 115 | CodeGenerator2::visit(UnionDecl *aggregateDecl) |
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| 116 | { |
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| 117 | before << "union "; |
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| 118 | handleAggregate( aggregateDecl ); |
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| 119 | } |
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| 120 | |
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| 121 | void |
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| 122 | CodeGenerator2::visit(EnumDecl *aggDecl) |
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| 123 | { |
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| 124 | before << "enum "; |
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| 125 | |
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| 126 | if ( aggDecl->get_name() != "" ) |
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| 127 | before << aggDecl->get_name(); |
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| 128 | |
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| 129 | std::list< Declaration* > &memb = aggDecl->get_members(); |
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| 130 | |
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| 131 | if( ! memb.empty() ){ |
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| 132 | before << endl << "{" << endl; |
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| 133 | |
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| 134 | cur_indent += CodeGenerator2::tabsize; |
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| 135 | for(std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++){ |
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| 136 | ObjectDecl *obj = dynamic_cast< ObjectDecl* >( *i ); |
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| 137 | assert( obj ); |
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| 138 | before << string(cur_indent, ' ') << mangleName( obj ); |
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| 139 | if( obj->get_init() ) { |
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| 140 | before << " = "; |
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| 141 | obj->get_init()->accept(*this); |
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| 142 | } |
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| 143 | before << "," << endl; |
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| 144 | } |
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| 145 | |
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| 146 | cur_indent -= CodeGenerator2::tabsize; |
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| 147 | |
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| 148 | before << "}" << endl; |
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| 149 | } |
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| 150 | } |
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| 151 | |
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| 152 | void |
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| 153 | CodeGenerator2::visit(ContextDecl *aggregateDecl) |
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| 154 | { |
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| 155 | } |
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| 156 | |
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| 157 | void |
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| 158 | CodeGenerator2::visit(TypedefDecl *typeDecl) |
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| 159 | { |
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| 160 | before << "typedef "; |
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| 161 | before << genType( typeDecl->get_base(), typeDecl->get_name() ); |
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| 162 | } |
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| 163 | |
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| 164 | void |
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| 165 | CodeGenerator2::visit(TypeDecl *typeDecl) |
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| 166 | { |
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| 167 | // really, we should mutate this into something that isn't a TypeDecl |
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| 168 | // but that requires large-scale changes, still to be done |
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| 169 | before << "extern unsigned long " << typeDecl->get_name(); |
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| 170 | if( typeDecl->get_base() ) { |
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| 171 | before << " = sizeof( " << genType( typeDecl->get_base(), "" ) << " )"; |
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| 172 | } |
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| 173 | } |
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| 174 | |
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| 175 | //*** Initializer |
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| 176 | void |
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| 177 | CodeGenerator2::visit(SingleInit *init) |
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| 178 | { |
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| 179 | init->get_value()->accept( *this ); |
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| 180 | } |
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| 181 | |
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| 182 | void |
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| 183 | CodeGenerator2::visit(ListInit *init) |
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| 184 | { |
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| 185 | before << "{ "; |
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| 186 | genCommaList( init->begin_initializers(), init->end_initializers() ); |
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| 187 | before << " }"; |
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| 188 | } |
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| 189 | |
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| 190 | //*** Constant |
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| 191 | void CodeGenerator2::visit(Constant *constant) { |
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| 192 | before << constant->get_value() ; |
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| 193 | } |
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| 194 | |
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| 195 | //*** Expressions |
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| 196 | void |
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| 197 | CodeGenerator2::visit(ApplicationExpr *applicationExpr) |
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| 198 | { |
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| 199 | if( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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| 200 | OperatorInfo opInfo; |
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| 201 | if( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 202 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 203 | switch( opInfo.type ) { |
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| 204 | case OT_PREFIXASSIGN: |
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| 205 | case OT_POSTFIXASSIGN: |
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| 206 | case OT_INFIXASSIGN: |
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| 207 | { |
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| 208 | assert( arg != applicationExpr->get_args().end() ); |
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| 209 | if( AddressExpr *addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
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| 210 | |
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| 211 | *arg = addrExpr->get_arg(); |
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| 212 | } else { |
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| 213 | UntypedExpr *newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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| 214 | newExpr->get_args().push_back( *arg ); |
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| 215 | *arg = newExpr; |
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| 216 | } |
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| 217 | break; |
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| 218 | } |
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| 219 | |
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| 220 | default: |
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| 221 | // do nothing |
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| 222 | ; |
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| 223 | } |
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| 224 | |
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| 225 | switch( opInfo.type ) { |
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| 226 | case OT_INDEX: |
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| 227 | assert( applicationExpr->get_args().size() == 2 ); |
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| 228 | (*arg++)->accept( *this ); |
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| 229 | before << "["; |
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| 230 | (*arg)->accept( *this ); |
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| 231 | before << "]"; |
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| 232 | break; |
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| 233 | |
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| 234 | case OT_CALL: |
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| 235 | // there are no intrinsic definitions of the function call operator |
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| 236 | assert( false ); |
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| 237 | break; |
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| 238 | |
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| 239 | case OT_PREFIX: |
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| 240 | case OT_PREFIXASSIGN: |
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| 241 | assert( applicationExpr->get_args().size() == 1 ); |
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| 242 | before << "("; |
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| 243 | before << opInfo.symbol; |
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| 244 | (*arg)->accept( *this ); |
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| 245 | before << ")"; |
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| 246 | break; |
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| 247 | |
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| 248 | case OT_POSTFIX: |
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| 249 | case OT_POSTFIXASSIGN: |
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| 250 | assert( applicationExpr->get_args().size() == 1 ); |
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| 251 | (*arg)->accept( *this ); |
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| 252 | before << opInfo.symbol; |
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| 253 | break; |
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| 254 | |
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| 255 | case OT_INFIX: |
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| 256 | case OT_INFIXASSIGN: |
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| 257 | assert( applicationExpr->get_args().size() == 2 ); |
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| 258 | before << "("; |
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| 259 | (*arg++)->accept( *this ); |
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| 260 | before << opInfo.symbol; |
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| 261 | (*arg)->accept( *this ); |
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| 262 | before << ")"; |
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| 263 | break; |
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| 264 | |
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| 265 | case OT_CONSTANT: |
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| 266 | // there are no intrinsic definitions of 0 or 1 as functions |
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| 267 | assert( false ); |
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| 268 | } |
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| 269 | } else { |
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| 270 | varExpr->accept( *this ); |
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| 271 | before << "("; |
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| 272 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
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| 273 | before << ")"; |
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| 274 | } |
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| 275 | } else { |
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| 276 | applicationExpr->get_function()->accept( *this ); |
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| 277 | before << "("; |
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| 278 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
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| 279 | before << ")"; |
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| 280 | } |
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| 281 | } |
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| 282 | |
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| 283 | void |
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| 284 | CodeGenerator2::visit(UntypedExpr *untypedExpr) |
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| 285 | { |
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| 286 | if( NameExpr *nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
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| 287 | OperatorInfo opInfo; |
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| 288 | if( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
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| 289 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
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| 290 | switch( opInfo.type ) { |
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| 291 | case OT_INDEX: |
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| 292 | assert( untypedExpr->get_args().size() == 2 ); |
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| 293 | (*arg++)->accept( *this ); |
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| 294 | before << "["; |
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| 295 | (*arg)->accept( *this ); |
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| 296 | before << "]"; |
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| 297 | break; |
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| 298 | |
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| 299 | case OT_CALL: |
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| 300 | assert( false ); |
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| 301 | break; |
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| 302 | |
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| 303 | case OT_PREFIX: |
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| 304 | case OT_PREFIXASSIGN: |
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| 305 | assert( untypedExpr->get_args().size() == 1 ); |
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| 306 | before << "("; |
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| 307 | before << opInfo.symbol; |
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| 308 | (*arg)->accept( *this ); |
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| 309 | before << ")"; |
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| 310 | break; |
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| 311 | |
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| 312 | case OT_POSTFIX: |
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| 313 | case OT_POSTFIXASSIGN: |
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| 314 | assert( untypedExpr->get_args().size() == 1 ); |
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| 315 | (*arg)->accept( *this ); |
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| 316 | before << opInfo.symbol; |
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| 317 | break; |
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| 318 | |
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| 319 | case OT_INFIX: |
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| 320 | case OT_INFIXASSIGN: |
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| 321 | assert( untypedExpr->get_args().size() == 2 ); |
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| 322 | before << "("; |
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| 323 | (*arg++)->accept( *this ); |
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| 324 | before << opInfo.symbol; |
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| 325 | (*arg)->accept( *this ); |
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| 326 | before << ")"; |
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| 327 | break; |
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| 328 | |
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| 329 | case OT_CONSTANT: |
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| 330 | // there are no intrinsic definitions of 0 or 1 as functions |
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| 331 | assert( false ); |
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| 332 | } |
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| 333 | } else { |
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| 334 | nameExpr->accept( *this ); |
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| 335 | before << "("; |
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| 336 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
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| 337 | before << ")"; |
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| 338 | } |
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| 339 | } else { |
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| 340 | untypedExpr->get_function()->accept( *this ); |
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| 341 | before << "("; |
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| 342 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
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| 343 | before << ")"; |
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| 344 | } |
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| 345 | } |
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| 346 | |
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| 347 | void |
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| 348 | CodeGenerator2::visit(NameExpr *nameExpr) |
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| 349 | { |
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| 350 | OperatorInfo opInfo; |
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| 351 | if( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
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| 352 | assert( opInfo.type == OT_CONSTANT ); |
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| 353 | before << opInfo.symbol; |
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| 354 | } else { |
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| 355 | before << nameExpr->get_name(); |
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| 356 | } |
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| 357 | } |
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| 358 | |
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| 359 | void |
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| 360 | CodeGenerator2::visit(AddressExpr *addressExpr) |
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| 361 | { |
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| 362 | before << "(&"; |
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| 363 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
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| 364 | if( VariableExpr *variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
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| 365 | before << mangleName( variableExpr->get_var() ); |
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| 366 | } else { |
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| 367 | addressExpr->get_arg()->accept( *this ); |
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| 368 | } |
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| 369 | before << ")"; |
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| 370 | } |
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| 371 | |
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| 372 | void |
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| 373 | CodeGenerator2::visit(CastExpr *castExpr) |
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| 374 | { |
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| 375 | before << "(("; |
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| 376 | if( castExpr->get_results().empty() ) { |
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| 377 | before << "void" ; |
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| 378 | } else { |
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| 379 | before << genType( castExpr->get_results().front(), "" ); |
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| 380 | } |
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| 381 | before << ")"; |
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| 382 | castExpr->get_arg()->accept( *this ); |
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| 383 | before << ")"; |
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| 384 | } |
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| 385 | |
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| 386 | void |
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| 387 | CodeGenerator2::visit(UntypedMemberExpr *memberExpr) |
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| 388 | { |
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| 389 | assert( false ); |
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| 390 | } |
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| 391 | |
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| 392 | void |
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| 393 | CodeGenerator2::visit(MemberExpr *memberExpr) |
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| 394 | { |
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| 395 | memberExpr->get_aggregate()->accept( *this ); |
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| 396 | before << "." << mangleName( memberExpr->get_member() ); |
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| 397 | } |
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| 398 | |
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| 399 | void |
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| 400 | CodeGenerator2::visit(VariableExpr *variableExpr) |
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| 401 | { |
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| 402 | OperatorInfo opInfo; |
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| 403 | if( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
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| 404 | before << opInfo.symbol; |
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| 405 | } else { |
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| 406 | before << mangleName( variableExpr->get_var() ); |
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| 407 | } |
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| 408 | } |
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| 409 | |
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| 410 | void |
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| 411 | CodeGenerator2::visit(ConstantExpr *constantExpr) |
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| 412 | { |
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| 413 | assert( constantExpr->get_constant() ); |
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| 414 | constantExpr->get_constant()->accept( *this ); |
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| 415 | } |
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| 416 | |
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| 417 | void |
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| 418 | CodeGenerator2::visit(SizeofExpr *sizeofExpr) |
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| 419 | { |
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| 420 | before << "sizeof("; |
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| 421 | if( sizeofExpr->get_isType() ) { |
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| 422 | before << genType( sizeofExpr->get_type(), "" ); |
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| 423 | } else { |
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| 424 | sizeofExpr->get_expr()->accept( *this ); |
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| 425 | } |
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| 426 | before << ")"; |
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| 427 | } |
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| 428 | |
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| 429 | void |
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| 430 | CodeGenerator2::visit(LogicalExpr *logicalExpr) |
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| 431 | { |
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| 432 | before << "("; |
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| 433 | logicalExpr->get_arg1()->accept( *this ); |
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| 434 | if( logicalExpr->get_isAnd() ) { |
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| 435 | before << " && "; |
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| 436 | } else { |
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| 437 | before << " || "; |
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| 438 | } |
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| 439 | logicalExpr->get_arg2()->accept( *this ); |
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| 440 | before << ")"; |
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| 441 | } |
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| 442 | |
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| 443 | void |
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| 444 | CodeGenerator2::visit(ConditionalExpr *conditionalExpr) |
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| 445 | { |
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| 446 | before << "("; |
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| 447 | conditionalExpr->get_arg1()->accept( *this ); |
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| 448 | before << " ? "; |
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| 449 | conditionalExpr->get_arg2()->accept( *this ); |
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| 450 | before << " : "; |
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| 451 | conditionalExpr->get_arg3()->accept( *this ); |
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| 452 | before << ")"; |
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| 453 | } |
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| 454 | |
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| 455 | void |
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| 456 | CodeGenerator2::visit(CommaExpr *commaExpr) |
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| 457 | { |
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| 458 | before << "("; |
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| 459 | commaExpr->get_arg1()->accept( *this ); |
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| 460 | before << " , "; |
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| 461 | commaExpr->get_arg2()->accept( *this ); |
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| 462 | before << ")"; |
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| 463 | } |
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| 464 | |
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| 465 | void |
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| 466 | CodeGenerator2::visit(TupleExpr *tupleExpr) |
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| 467 | { |
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| 468 | } |
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| 469 | |
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| 470 | void |
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| 471 | CodeGenerator2::visit(TypeExpr *typeExpr) |
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| 472 | { |
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| 473 | } |
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| 474 | |
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| 475 | |
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| 476 | //*** Statements |
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| 477 | void CodeGenerator2::visit(CompoundStmt *compoundStmt){ |
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| 478 | std::list<Statement*> ks = compoundStmt->get_kids(); |
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| 479 | |
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| 480 | before << endl << string(cur_indent,' ') << "{" << endl; |
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| 481 | |
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| 482 | cur_indent += CodeGenerator2::tabsize; |
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| 483 | |
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| 484 | for(std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++){ |
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| 485 | before << string(cur_indent, ' ') << printLabels( (*i)->get_labels() ) ; |
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| 486 | (*i)->accept(*this); |
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| 487 | shift_left(); |
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| 488 | before << endl; |
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| 489 | } |
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| 490 | cur_indent -= CodeGenerator2::tabsize; |
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| 491 | |
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| 492 | before << string(cur_indent,' ') << "}" << endl; |
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| 493 | } |
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| 494 | |
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| 495 | void CodeGenerator2::visit(ExprStmt *exprStmt){ |
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| 496 | if(exprStmt != 0){ |
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| 497 | exprStmt->get_expr()->accept( *this ); |
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| 498 | shift_left(); |
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| 499 | before << ";" ; |
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| 500 | } |
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| 501 | } |
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| 502 | |
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| 503 | void CodeGenerator2::visit(IfStmt *ifStmt){ |
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| 504 | before << "if ("; |
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| 505 | ifStmt->get_condition()->accept(*this); |
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| 506 | after << ")" << endl ; |
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| 507 | shift_left(); |
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| 508 | |
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| 509 | cur_indent += CodeGenerator2::tabsize; |
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| 510 | before << string(cur_indent, ' '); |
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| 511 | ifStmt->get_thenPart()->accept(*this); |
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| 512 | cur_indent -= CodeGenerator2::tabsize; |
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| 513 | shift_left(); before << endl; |
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| 514 | |
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| 515 | if(ifStmt->get_elsePart() != 0){ |
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| 516 | before << string(cur_indent, ' ') << " else " << endl ; |
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| 517 | |
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| 518 | cur_indent += CodeGenerator2::tabsize; |
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| 519 | ifStmt->get_elsePart()->accept(*this); |
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| 520 | cur_indent -= CodeGenerator2::tabsize; |
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| 521 | } |
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| 522 | } |
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| 523 | |
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| 524 | void CodeGenerator2::visit(SwitchStmt *switchStmt){ |
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| 525 | //before << /* "\r" << */ string(cur_indent, ' ') << CodeGenerator2::printLabels( switchStmt->get_labels() ) |
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| 526 | before << "switch (" ; |
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| 527 | switchStmt->get_condition()->accept(*this); |
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| 528 | after << ")" << std::endl ; |
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| 529 | shift_left(); |
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| 530 | |
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| 531 | before << string(cur_indent, ' ') << "{" << std::endl; |
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| 532 | cur_indent += CodeGenerator2::tabsize; |
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| 533 | |
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| 534 | std::list< Statement * > stmts = switchStmt->get_branches(); |
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| 535 | bool lastBreak = false; |
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| 536 | |
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| 537 | // horrible, horrible hack |
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| 538 | if( dynamic_cast<BranchStmt *>(stmts.back()) != 0 ) { |
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| 539 | lastBreak = true; |
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| 540 | stmts.pop_back(); |
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| 541 | } |
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| 542 | acceptAll(stmts, *this ); |
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| 543 | if ( lastBreak ) { |
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| 544 | Statement *st = switchStmt->get_branches().back(); |
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| 545 | before << CodeGenerator2::printLabels(st->get_labels()); |
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| 546 | st->accept(*this); |
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| 547 | } |
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| 548 | |
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| 549 | cur_indent -= CodeGenerator2::tabsize; |
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| 550 | |
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| 551 | before << /* "\r" << */ string(cur_indent, ' ') << "}" << endl ; |
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| 552 | } |
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| 553 | |
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| 554 | void CodeGenerator2::visit(CaseStmt *caseStmt){ |
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| 555 | before << string(cur_indent, ' '); |
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| 556 | if (caseStmt->isDefault()) |
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| 557 | before << "default " ; |
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| 558 | else { |
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| 559 | before << "case " ; |
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| 560 | caseStmt->get_condition()->accept(*this); |
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| 561 | } |
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| 562 | after << ":" << std::endl ; |
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| 563 | shift_left(); |
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| 564 | |
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| 565 | std::list<Statement *> sts = caseStmt->get_statements(); |
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| 566 | |
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| 567 | cur_indent += CodeGenerator2::tabsize; |
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| 568 | for(std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++){ |
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| 569 | before << /* "\r" << */ string(cur_indent, ' ') << printLabels( (*i)->get_labels() ) ; |
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| 570 | (*i)->accept(*this); |
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| 571 | shift_left(); |
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| 572 | before << ";" << endl; |
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| 573 | } |
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| 574 | cur_indent -= CodeGenerator2::tabsize; |
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| 575 | } |
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| 576 | |
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| 577 | void CodeGenerator2::visit(BranchStmt *branchStmt){ |
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| 578 | switch(branchStmt->get_type()){ |
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| 579 | case BranchStmt::Goto: |
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| 580 | if( ! branchStmt->get_target().empty() ) |
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| 581 | before << "goto " << branchStmt->get_target(); |
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| 582 | else { |
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| 583 | if ( branchStmt->get_computedTarget() != 0 ) { |
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| 584 | before << "goto *"; |
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| 585 | branchStmt->get_computedTarget()->accept(*this); |
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| 586 | } |
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| 587 | } |
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| 588 | break; |
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| 589 | case BranchStmt::Break: |
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| 590 | before << "break"; |
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| 591 | break; |
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| 592 | case BranchStmt::Continue: |
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| 593 | before << "continue"; |
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| 594 | break; |
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| 595 | } |
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| 596 | before << ";"; |
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| 597 | } |
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| 598 | |
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| 599 | |
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| 600 | void CodeGenerator2::visit(ReturnStmt *returnStmt){ |
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| 601 | before << "return "; |
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| 602 | |
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| 603 | // xxx -- check for null expression; |
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| 604 | if ( returnStmt->get_expr() ){ |
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| 605 | returnStmt->get_expr()->accept( *this ); |
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| 606 | } |
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| 607 | after << ";"; |
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| 608 | } |
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| 609 | |
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| 610 | void CodeGenerator2::visit(WhileStmt *whileStmt){ |
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| 611 | if( whileStmt->get_isDoWhile() ) |
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| 612 | before << "do" ; |
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| 613 | else { |
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| 614 | before << "while(" ; |
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| 615 | whileStmt->get_condition()->accept(*this); |
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| 616 | after << ")"; |
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| 617 | } |
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| 618 | after << "{" << endl ; |
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| 619 | shift_left(); |
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| 620 | |
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| 621 | whileStmt->get_body()->accept( *this ); |
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| 622 | |
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| 623 | before << /* "\r" << */ string(cur_indent, ' ') << "}" ; |
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| 624 | |
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| 625 | if( whileStmt->get_isDoWhile() ){ |
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| 626 | before << " while(" ; |
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| 627 | whileStmt->get_condition()->accept(*this); |
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| 628 | after << ");"; |
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| 629 | } |
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| 630 | |
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| 631 | after << endl; |
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| 632 | } |
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| 633 | |
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| 634 | void CodeGenerator2::visit(ForStmt *forStmt){ |
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| 635 | before << "for ("; |
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| 636 | |
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| 637 | if( forStmt->get_initialization() != 0 ) |
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| 638 | forStmt->get_initialization()->accept( *this ); |
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| 639 | else |
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| 640 | before << ";"; |
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| 641 | shift_left(); |
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| 642 | |
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| 643 | if( forStmt->get_condition() != 0 ) |
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| 644 | forStmt->get_condition()->accept( *this ); |
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| 645 | shift_left(); before << ";"; |
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| 646 | |
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| 647 | if( forStmt->get_increment() != 0 ) |
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| 648 | forStmt->get_increment()->accept( *this ); |
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| 649 | shift_left(); before << ")" << endl; |
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| 650 | |
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| 651 | if( forStmt->get_body() != 0 ){ |
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| 652 | cur_indent += CodeGenerator2::tabsize; |
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| 653 | before << string(cur_indent, ' ') << CodeGenerator2::printLabels( forStmt->get_body()->get_labels() ); |
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| 654 | forStmt->get_body()->accept( *this ); |
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| 655 | cur_indent -= CodeGenerator2::tabsize; |
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| 656 | } |
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| 657 | } |
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| 658 | |
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| 659 | void CodeGenerator2::visit(NullStmt *nullStmt){ |
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| 660 | //before << /* "\r" << */ string(cur_indent, ' ') << CodeGenerator2::printLabels( nullStmt->get_labels() ); |
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| 661 | before << "/* null statement */ ;"; |
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| 662 | } |
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| 663 | |
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| 664 | void CodeGenerator2::visit(DeclStmt *declStmt){ |
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| 665 | declStmt->get_decl()->accept( *this ); |
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| 666 | |
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| 667 | if( doSemicolon( declStmt->get_decl() ) ) { |
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| 668 | after << ";"; |
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| 669 | } |
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| 670 | shift_left(); |
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| 671 | } |
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| 672 | |
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| 673 | std::string CodeGenerator2::printLabels ( std::list< Label > &l ) { |
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| 674 | std::string str(""); |
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| 675 | l.unique(); |
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| 676 | |
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| 677 | for( std::list< Label >::iterator i = l.begin(); i != l.end(); i++) |
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| 678 | str += *i + ": "; |
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| 679 | |
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| 680 | return str; |
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| 681 | } |
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| 682 | |
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| 683 | void CodeGenerator2::shift_left(){ |
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| 684 | before << string(after.str(), after.pcount()); |
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| 685 | |
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| 686 | after.freeze( false ); |
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| 687 | after.seekp(0); |
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| 688 | } |
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| 689 | |
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| 690 | void |
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| 691 | CodeGenerator2::handleStorageClass( Declaration *decl ) |
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| 692 | { |
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| 693 | switch( decl->get_storageClass() ) { |
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| 694 | case Declaration::NoStorageClass: |
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| 695 | break; |
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| 696 | case Declaration::Auto: |
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| 697 | break; |
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| 698 | case Declaration::Static: |
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| 699 | before << "static "; |
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| 700 | break; |
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| 701 | case Declaration::Extern: |
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| 702 | before << "extern "; |
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| 703 | break; |
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| 704 | case Declaration::Register: |
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| 705 | before << "register "; |
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| 706 | break; |
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| 707 | case Declaration::Fortran: |
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| 708 | before << "fortran "; |
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| 709 | break; |
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| 710 | } |
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| 711 | } |
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| 712 | |
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| 713 | } // namespace CodeGen |
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| 714 | |
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| 715 | |
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