[51587aa] | 1 | // |
---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
---|
| 3 | // |
---|
| 4 | // The contents of this file are covered under the licence agreement in the |
---|
| 5 | // file "LICENCE" distributed with Cforall. |
---|
| 6 | // |
---|
[71f4e4f] | 7 | // CodeGenerator.cc -- |
---|
[51587aa] | 8 | // |
---|
| 9 | // Author : Richard C. Bilson |
---|
| 10 | // Created On : Mon May 18 07:44:20 2015 |
---|
[e04ef3a] | 11 | // Last Modified By : Peter A. Buhr |
---|
| 12 | // Last Modified On : Thu Jun 9 13:21:00 2016 |
---|
| 13 | // Update Count : 256 |
---|
[51587aa] | 14 | // |
---|
| 15 | |
---|
[51b7345] | 16 | #include <algorithm> |
---|
| 17 | #include <iostream> |
---|
| 18 | #include <cassert> |
---|
| 19 | #include <list> |
---|
| 20 | |
---|
[68cd1ce] | 21 | #include "Parser/ParseNode.h" |
---|
| 22 | |
---|
[e8032b0] | 23 | #include "SynTree/Declaration.h" |
---|
[51b7345] | 24 | #include "SynTree/Expression.h" |
---|
| 25 | #include "SynTree/Initializer.h" |
---|
[68cd1ce] | 26 | #include "SynTree/Statement.h" |
---|
[e8032b0] | 27 | #include "SynTree/Type.h" |
---|
[7baed7d] | 28 | #include "SynTree/Attribute.h" |
---|
[51b7345] | 29 | |
---|
[d3b7937] | 30 | #include "Common/utility.h" |
---|
| 31 | #include "Common/UnimplementedError.h" |
---|
[51b7345] | 32 | |
---|
[a61fea9a] | 33 | #include "CodeGenerator.h" |
---|
[51b7345] | 34 | #include "OperatorTable.h" |
---|
| 35 | #include "GenType.h" |
---|
| 36 | |
---|
[10a7775] | 37 | #include "InitTweak/InitTweak.h" |
---|
| 38 | |
---|
[51b7345] | 39 | using namespace std; |
---|
| 40 | |
---|
| 41 | namespace CodeGen { |
---|
[6c4ff37] | 42 | int CodeGenerator::tabsize = 4; |
---|
[51587aa] | 43 | |
---|
[145f1fc] | 44 | // the kinds of statements that would ideally be followed by whitespace |
---|
[2b6c1e0] | 45 | bool wantSpacing( Statement * stmt) { |
---|
| 46 | return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) || |
---|
| 47 | dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * > ( stmt ) || dynamic_cast< SwitchStmt *>( stmt ); |
---|
| 48 | } |
---|
| 49 | |
---|
[cda48b6] | 50 | ostream & CodeGenerator::Indenter::operator()( ostream & output ) { |
---|
| 51 | return output << string( cg.cur_indent, ' ' ); |
---|
| 52 | } |
---|
| 53 | |
---|
| 54 | ostream & operator<<( ostream & output, CodeGenerator::Indenter &indent ) { |
---|
| 55 | return indent( output ); |
---|
| 56 | } |
---|
[51587aa] | 57 | |
---|
[7f5566b] | 58 | CodeGenerator::CodeGenerator( std::ostream &os ) : indent( *this), cur_indent( 0 ), insideFunction( false ), output( os ) { } |
---|
[cda48b6] | 59 | |
---|
| 60 | CodeGenerator::CodeGenerator( std::ostream &os, std::string init, int indentation, bool infunp ) |
---|
[7f5566b] | 61 | : indent( *this), cur_indent( indentation ), insideFunction( infunp ), output( os ) { |
---|
[6c4ff37] | 62 | //output << std::string( init ); |
---|
[51587aa] | 63 | } |
---|
| 64 | |
---|
[cda48b6] | 65 | CodeGenerator::CodeGenerator( std::ostream &os, char *init, int indentation, bool infunp ) |
---|
[7f5566b] | 66 | : indent( *this ), cur_indent( indentation ), insideFunction( infunp ), output( os ) { |
---|
[6c4ff37] | 67 | //output << std::string( init ); |
---|
[51587aa] | 68 | } |
---|
| 69 | |
---|
| 70 | string mangleName( DeclarationWithType *decl ) { |
---|
| 71 | if ( decl->get_mangleName() != "" ) { |
---|
[f326f99] | 72 | // need to incorporate scope level in order to differentiate names for destructors |
---|
| 73 | return decl->get_scopedMangleName(); |
---|
[51587aa] | 74 | } else { |
---|
| 75 | return decl->get_name(); |
---|
| 76 | } // if |
---|
| 77 | } |
---|
[94b4364] | 78 | |
---|
[7baed7d] | 79 | void CodeGenerator::genAttributes( std::list< Attribute * > & attributes ) { |
---|
| 80 | if ( ! attributes.empty() ) { |
---|
| 81 | output << "__attribute__ (("; |
---|
| 82 | for ( Attribute *& attr : attributes ) { |
---|
| 83 | if ( ! attr->empty() ) { |
---|
| 84 | output << attr->get_name() << "("; |
---|
| 85 | genCommaList( attr->get_parameters().begin(), attr->get_parameters().end() ); |
---|
| 86 | output << ")"; |
---|
[03e5d14] | 87 | } |
---|
[7baed7d] | 88 | output << ","; |
---|
| 89 | } |
---|
| 90 | output << ")) "; |
---|
[4e24610] | 91 | } |
---|
[7baed7d] | 92 | } |
---|
| 93 | |
---|
| 94 | |
---|
| 95 | //*** Declarations |
---|
| 96 | void CodeGenerator::visit( FunctionDecl *functionDecl ) { |
---|
| 97 | genAttributes( functionDecl->get_attributes() ); |
---|
| 98 | |
---|
[51587aa] | 99 | handleStorageClass( functionDecl ); |
---|
[f38c8d9] | 100 | if ( functionDecl->get_isInline() ) { |
---|
[6c4ff37] | 101 | output << "inline "; |
---|
[f38c8d9] | 102 | } // if |
---|
[de62360d] | 103 | if ( functionDecl->get_isNoreturn() ) { |
---|
| 104 | output << "_Noreturn "; |
---|
| 105 | } // if |
---|
[6c4ff37] | 106 | output << genType( functionDecl->get_functionType(), mangleName( functionDecl ) ); |
---|
[51587aa] | 107 | |
---|
| 108 | // how to get this to the Functype? |
---|
| 109 | std::list< Declaration * > olds = functionDecl->get_oldDecls(); |
---|
| 110 | if ( ! olds.empty() ) { |
---|
[6c4ff37] | 111 | output << " /* function has old declaration */"; |
---|
[51587aa] | 112 | } // if |
---|
| 113 | |
---|
| 114 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
---|
| 115 | if ( functionDecl->get_statements() ) { |
---|
[7f5566b] | 116 | functionDecl->get_statements()->accept( *this ); |
---|
[51587aa] | 117 | } // if |
---|
| 118 | } |
---|
| 119 | |
---|
[6c4ff37] | 120 | void CodeGenerator::visit( ObjectDecl *objectDecl ) { |
---|
[51587aa] | 121 | handleStorageClass( objectDecl ); |
---|
[6c4ff37] | 122 | output << genType( objectDecl->get_type(), mangleName( objectDecl ) ); |
---|
[71f4e4f] | 123 | |
---|
[51587aa] | 124 | if ( objectDecl->get_init() ) { |
---|
[6c4ff37] | 125 | output << " = "; |
---|
[51587aa] | 126 | objectDecl->get_init()->accept( *this ); |
---|
| 127 | } // if |
---|
| 128 | if ( objectDecl->get_bitfieldWidth() ) { |
---|
[6c4ff37] | 129 | output << ":"; |
---|
[51587aa] | 130 | objectDecl->get_bitfieldWidth()->accept( *this ); |
---|
| 131 | } // if |
---|
| 132 | } |
---|
| 133 | |
---|
[6c4ff37] | 134 | void CodeGenerator::handleAggregate( AggregateDecl *aggDecl ) { |
---|
[51587aa] | 135 | if ( aggDecl->get_name() != "" ) |
---|
[6c4ff37] | 136 | output << aggDecl->get_name(); |
---|
[71f4e4f] | 137 | |
---|
[51587aa] | 138 | std::list< Declaration * > &memb = aggDecl->get_members(); |
---|
| 139 | |
---|
| 140 | if ( ! memb.empty() ) { |
---|
[94b4364] | 141 | output << " {" << endl; |
---|
[51587aa] | 142 | |
---|
[71f4e4f] | 143 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 144 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
---|
[71f4e4f] | 145 | output << indent; |
---|
[7f5566b] | 146 | (*i)->accept( *this ); |
---|
[6c4ff37] | 147 | output << ";" << endl; |
---|
[51587aa] | 148 | } |
---|
| 149 | |
---|
[71f4e4f] | 150 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 151 | |
---|
[cda48b6] | 152 | output << indent << "}"; |
---|
[17cd4eb] | 153 | } // if |
---|
[51587aa] | 154 | } |
---|
[17cd4eb] | 155 | |
---|
[6c4ff37] | 156 | void CodeGenerator::visit( StructDecl *structDecl ) { |
---|
| 157 | output << "struct "; |
---|
[51587aa] | 158 | handleAggregate( structDecl ); |
---|
| 159 | } |
---|
[17cd4eb] | 160 | |
---|
[6c4ff37] | 161 | void CodeGenerator::visit( UnionDecl *aggregateDecl ) { |
---|
| 162 | output << "union "; |
---|
[51587aa] | 163 | handleAggregate( aggregateDecl ); |
---|
| 164 | } |
---|
[71f4e4f] | 165 | |
---|
[6c4ff37] | 166 | void CodeGenerator::visit( EnumDecl *aggDecl ) { |
---|
| 167 | output << "enum "; |
---|
[51587aa] | 168 | |
---|
| 169 | if ( aggDecl->get_name() != "" ) |
---|
[6c4ff37] | 170 | output << aggDecl->get_name(); |
---|
[71f4e4f] | 171 | |
---|
[51587aa] | 172 | std::list< Declaration* > &memb = aggDecl->get_members(); |
---|
| 173 | |
---|
| 174 | if ( ! memb.empty() ) { |
---|
[cda48b6] | 175 | output << " {" << endl; |
---|
[51587aa] | 176 | |
---|
[71f4e4f] | 177 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 178 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
---|
| 179 | ObjectDecl *obj = dynamic_cast< ObjectDecl* >( *i ); |
---|
| 180 | assert( obj ); |
---|
[71f4e4f] | 181 | output << indent << mangleName( obj ); |
---|
[51587aa] | 182 | if ( obj->get_init() ) { |
---|
[6c4ff37] | 183 | output << " = "; |
---|
[7f5566b] | 184 | obj->get_init()->accept( *this ); |
---|
[51587aa] | 185 | } // if |
---|
[6c4ff37] | 186 | output << "," << endl; |
---|
[51587aa] | 187 | } // for |
---|
| 188 | |
---|
[71f4e4f] | 189 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 190 | |
---|
[cda48b6] | 191 | output << indent << "}"; |
---|
[51587aa] | 192 | } // if |
---|
| 193 | } |
---|
[71f4e4f] | 194 | |
---|
[4040425] | 195 | void CodeGenerator::visit( TraitDecl *aggregateDecl ) {} |
---|
[71f4e4f] | 196 | |
---|
[6c4ff37] | 197 | void CodeGenerator::visit( TypedefDecl *typeDecl ) { |
---|
| 198 | output << "typedef "; |
---|
| 199 | output << genType( typeDecl->get_base(), typeDecl->get_name() ); |
---|
[51587aa] | 200 | } |
---|
[71f4e4f] | 201 | |
---|
[6c4ff37] | 202 | void CodeGenerator::visit( TypeDecl *typeDecl ) { |
---|
[51587aa] | 203 | // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes, |
---|
| 204 | // still to be done |
---|
[6c4ff37] | 205 | output << "extern unsigned long " << typeDecl->get_name(); |
---|
[51587aa] | 206 | if ( typeDecl->get_base() ) { |
---|
[6c4ff37] | 207 | output << " = sizeof( " << genType( typeDecl->get_base(), "" ) << " )"; |
---|
[51587aa] | 208 | } // if |
---|
| 209 | } |
---|
| 210 | |
---|
[e45215c] | 211 | void CodeGenerator::printDesignators( std::list< Expression * > & designators ) { |
---|
| 212 | typedef std::list< Expression * > DesignatorList; |
---|
| 213 | if ( designators.size() == 0 ) return; |
---|
| 214 | for ( DesignatorList::iterator iter = designators.begin(); iter != designators.end(); ++iter ) { |
---|
[8a4da06] | 215 | if ( dynamic_cast< NameExpr * >( *iter ) ) { |
---|
[f32c7f4] | 216 | // if expression is a name, then initializing aggregate member |
---|
| 217 | output << "."; |
---|
| 218 | (*iter)->accept( *this ); |
---|
| 219 | } else { |
---|
| 220 | // if not a simple name, it has to be a constant expression, i.e. an array designator |
---|
[e45215c] | 221 | output << "["; |
---|
| 222 | (*iter)->accept( *this ); |
---|
| 223 | output << "]"; |
---|
| 224 | } |
---|
| 225 | } |
---|
| 226 | output << " = "; |
---|
| 227 | } |
---|
| 228 | |
---|
[6c4ff37] | 229 | void CodeGenerator::visit( SingleInit *init ) { |
---|
[e45215c] | 230 | printDesignators( init->get_designators() ); |
---|
[51587aa] | 231 | init->get_value()->accept( *this ); |
---|
| 232 | } |
---|
| 233 | |
---|
[6c4ff37] | 234 | void CodeGenerator::visit( ListInit *init ) { |
---|
[e45215c] | 235 | printDesignators( init->get_designators() ); |
---|
[6c4ff37] | 236 | output << "{ "; |
---|
[5b40f30] | 237 | if ( init->begin_initializers() == init->end_initializers() ) { |
---|
| 238 | // illegal to leave initializer list empty for scalar initializers, |
---|
| 239 | // but always legal to have 0 |
---|
| 240 | output << "0"; |
---|
| 241 | } else { |
---|
| 242 | genCommaList( init->begin_initializers(), init->end_initializers() ); |
---|
| 243 | } |
---|
[6c4ff37] | 244 | output << " }"; |
---|
[51587aa] | 245 | } |
---|
| 246 | |
---|
[71f4e4f] | 247 | void CodeGenerator::visit( Constant *constant ) { |
---|
[6c4ff37] | 248 | output << constant->get_value() ; |
---|
[51587aa] | 249 | } |
---|
| 250 | |
---|
| 251 | //*** Expressions |
---|
[6c4ff37] | 252 | void CodeGenerator::visit( ApplicationExpr *applicationExpr ) { |
---|
[e04ef3a] | 253 | extension( applicationExpr ); |
---|
[51587aa] | 254 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
---|
| 255 | OperatorInfo opInfo; |
---|
| 256 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
---|
| 257 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
---|
| 258 | switch ( opInfo.type ) { |
---|
| 259 | case OT_PREFIXASSIGN: |
---|
| 260 | case OT_POSTFIXASSIGN: |
---|
| 261 | case OT_INFIXASSIGN: |
---|
[356189a] | 262 | case OT_CTOR: |
---|
[c2ce2350] | 263 | case OT_DTOR: |
---|
[51587aa] | 264 | { |
---|
| 265 | assert( arg != applicationExpr->get_args().end() ); |
---|
| 266 | if ( AddressExpr *addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
---|
[356189a] | 267 | // remove & from first assignment/ctor argument |
---|
[51587aa] | 268 | *arg = addrExpr->get_arg(); |
---|
| 269 | } else { |
---|
[356189a] | 270 | // no address-of operator, so must be a pointer - add dereference |
---|
[51587aa] | 271 | UntypedExpr *newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 272 | newExpr->get_args().push_back( *arg ); |
---|
[10a7775] | 273 | assert( (*arg)->get_results().size() == 1 ); |
---|
| 274 | Type * type = InitTweak::getPointerBase( (*arg)->get_results().front() ); |
---|
| 275 | assert( type ); |
---|
| 276 | newExpr->get_results().push_back( type ); |
---|
[51587aa] | 277 | *arg = newExpr; |
---|
| 278 | } // if |
---|
| 279 | break; |
---|
| 280 | } |
---|
[71f4e4f] | 281 | |
---|
[51587aa] | 282 | default: |
---|
| 283 | // do nothing |
---|
| 284 | ; |
---|
| 285 | } |
---|
[71f4e4f] | 286 | |
---|
[51587aa] | 287 | switch ( opInfo.type ) { |
---|
| 288 | case OT_INDEX: |
---|
| 289 | assert( applicationExpr->get_args().size() == 2 ); |
---|
| 290 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 291 | output << "["; |
---|
[51587aa] | 292 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 293 | output << "]"; |
---|
[51587aa] | 294 | break; |
---|
[71f4e4f] | 295 | |
---|
[51587aa] | 296 | case OT_CALL: |
---|
[356189a] | 297 | // there are no intrinsic definitions of the function call operator |
---|
[51587aa] | 298 | assert( false ); |
---|
| 299 | break; |
---|
[71f4e4f] | 300 | |
---|
[f1e012b] | 301 | case OT_CTOR: |
---|
[c2ce2350] | 302 | case OT_DTOR: |
---|
[356189a] | 303 | if ( applicationExpr->get_args().size() == 1 ) { |
---|
[c2ce2350] | 304 | // the expression fed into a single parameter constructor or destructor |
---|
[64071c2] | 305 | // may contain side effects, so must still output this expression |
---|
| 306 | output << "("; |
---|
[356189a] | 307 | (*arg++)->accept( *this ); |
---|
[64071c2] | 308 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 309 | } else if ( applicationExpr->get_args().size() == 2 ) { |
---|
[c2ce2350] | 310 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
[356189a] | 311 | output << "("; |
---|
| 312 | (*arg++)->accept( *this ); |
---|
| 313 | output << opInfo.symbol; |
---|
| 314 | (*arg)->accept( *this ); |
---|
[c2ce2350] | 315 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 316 | } else { |
---|
[c2ce2350] | 317 | // no constructors with 0 or more than 2 parameters |
---|
[356189a] | 318 | assert( false ); |
---|
| 319 | } |
---|
| 320 | break; |
---|
[f1e012b] | 321 | |
---|
[51587aa] | 322 | case OT_PREFIX: |
---|
| 323 | case OT_PREFIXASSIGN: |
---|
| 324 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 325 | output << "("; |
---|
| 326 | output << opInfo.symbol; |
---|
[51587aa] | 327 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 328 | output << ")"; |
---|
[51587aa] | 329 | break; |
---|
[71f4e4f] | 330 | |
---|
[51587aa] | 331 | case OT_POSTFIX: |
---|
| 332 | case OT_POSTFIXASSIGN: |
---|
| 333 | assert( applicationExpr->get_args().size() == 1 ); |
---|
| 334 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 335 | output << opInfo.symbol; |
---|
[51587aa] | 336 | break; |
---|
| 337 | |
---|
[f1e012b] | 338 | |
---|
[51587aa] | 339 | case OT_INFIX: |
---|
| 340 | case OT_INFIXASSIGN: |
---|
| 341 | assert( applicationExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 342 | output << "("; |
---|
[51587aa] | 343 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 344 | output << opInfo.symbol; |
---|
[51587aa] | 345 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 346 | output << ")"; |
---|
[51587aa] | 347 | break; |
---|
[71f4e4f] | 348 | |
---|
[51587aa] | 349 | case OT_CONSTANT: |
---|
[721f17a] | 350 | case OT_LABELADDRESS: |
---|
| 351 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
---|
[51587aa] | 352 | assert( false ); |
---|
| 353 | } |
---|
[17cd4eb] | 354 | } else { |
---|
[51587aa] | 355 | varExpr->accept( *this ); |
---|
[6c4ff37] | 356 | output << "("; |
---|
[51587aa] | 357 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 358 | output << ")"; |
---|
[17cd4eb] | 359 | } // if |
---|
[51587aa] | 360 | } else { |
---|
| 361 | applicationExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 362 | output << "("; |
---|
[51587aa] | 363 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 364 | output << ")"; |
---|
[51587aa] | 365 | } // if |
---|
| 366 | } |
---|
[71f4e4f] | 367 | |
---|
[6c4ff37] | 368 | void CodeGenerator::visit( UntypedExpr *untypedExpr ) { |
---|
[e04ef3a] | 369 | extension( untypedExpr ); |
---|
[51587aa] | 370 | if ( NameExpr *nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
---|
| 371 | OperatorInfo opInfo; |
---|
| 372 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 373 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
---|
| 374 | switch ( opInfo.type ) { |
---|
| 375 | case OT_INDEX: |
---|
| 376 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 377 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 378 | output << "["; |
---|
[51587aa] | 379 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 380 | output << "]"; |
---|
[51587aa] | 381 | break; |
---|
[71f4e4f] | 382 | |
---|
[51587aa] | 383 | case OT_CALL: |
---|
[f1e012b] | 384 | assert( false ); |
---|
| 385 | |
---|
[c2ce2350] | 386 | |
---|
| 387 | case OT_CTOR: |
---|
| 388 | case OT_DTOR: |
---|
| 389 | if ( untypedExpr->get_args().size() == 1 ) { |
---|
| 390 | // the expression fed into a single parameter constructor or destructor |
---|
[64071c2] | 391 | // may contain side effects, so must still output this expression |
---|
| 392 | output << "("; |
---|
[c2ce2350] | 393 | (*arg++)->accept( *this ); |
---|
[64071c2] | 394 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 395 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 396 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 397 | output << "("; |
---|
| 398 | (*arg++)->accept( *this ); |
---|
| 399 | output << opInfo.symbol; |
---|
| 400 | (*arg)->accept( *this ); |
---|
| 401 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 402 | } else { |
---|
| 403 | // no constructors with 0 or more than 2 parameters |
---|
| 404 | assert( false ); |
---|
| 405 | } |
---|
[51587aa] | 406 | break; |
---|
[71f4e4f] | 407 | |
---|
[51587aa] | 408 | case OT_PREFIX: |
---|
| 409 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 410 | case OT_LABELADDRESS: |
---|
[51587aa] | 411 | assert( untypedExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 412 | output << "("; |
---|
| 413 | output << opInfo.symbol; |
---|
[51587aa] | 414 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 415 | output << ")"; |
---|
[51587aa] | 416 | break; |
---|
[71f4e4f] | 417 | |
---|
[51587aa] | 418 | case OT_POSTFIX: |
---|
| 419 | case OT_POSTFIXASSIGN: |
---|
| 420 | assert( untypedExpr->get_args().size() == 1 ); |
---|
| 421 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 422 | output << opInfo.symbol; |
---|
[51587aa] | 423 | break; |
---|
[71f4e4f] | 424 | |
---|
[51587aa] | 425 | case OT_INFIX: |
---|
| 426 | case OT_INFIXASSIGN: |
---|
| 427 | assert( untypedExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 428 | output << "("; |
---|
[51587aa] | 429 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 430 | output << opInfo.symbol; |
---|
[51587aa] | 431 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 432 | output << ")"; |
---|
[51587aa] | 433 | break; |
---|
[71f4e4f] | 434 | |
---|
[51587aa] | 435 | case OT_CONSTANT: |
---|
| 436 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 437 | assert( false ); |
---|
| 438 | } |
---|
| 439 | } else { |
---|
| 440 | nameExpr->accept( *this ); |
---|
[6c4ff37] | 441 | output << "("; |
---|
[51587aa] | 442 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
[6c4ff37] | 443 | output << ")"; |
---|
[51587aa] | 444 | } // if |
---|
| 445 | } else { |
---|
| 446 | untypedExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 447 | output << "("; |
---|
[51587aa] | 448 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
[6c4ff37] | 449 | output << ")"; |
---|
[51587aa] | 450 | } // if |
---|
| 451 | } |
---|
[71f4e4f] | 452 | |
---|
[6c4ff37] | 453 | void CodeGenerator::visit( NameExpr *nameExpr ) { |
---|
[e04ef3a] | 454 | extension( nameExpr ); |
---|
[51587aa] | 455 | OperatorInfo opInfo; |
---|
| 456 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 457 | assert( opInfo.type == OT_CONSTANT ); |
---|
[6c4ff37] | 458 | output << opInfo.symbol; |
---|
[51587aa] | 459 | } else { |
---|
[6c4ff37] | 460 | output << nameExpr->get_name(); |
---|
[51587aa] | 461 | } // if |
---|
| 462 | } |
---|
[71f4e4f] | 463 | |
---|
[6c4ff37] | 464 | void CodeGenerator::visit( AddressExpr *addressExpr ) { |
---|
[e04ef3a] | 465 | extension( addressExpr ); |
---|
[6c4ff37] | 466 | output << "(&"; |
---|
[51587aa] | 467 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
---|
| 468 | if ( VariableExpr *variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
---|
[6c4ff37] | 469 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 470 | } else { |
---|
| 471 | addressExpr->get_arg()->accept( *this ); |
---|
| 472 | } // if |
---|
[6c4ff37] | 473 | output << ")"; |
---|
[51587aa] | 474 | } |
---|
| 475 | |
---|
[6c4ff37] | 476 | void CodeGenerator::visit( CastExpr *castExpr ) { |
---|
[e04ef3a] | 477 | extension( castExpr ); |
---|
[803deb1] | 478 | output << "("; |
---|
| 479 | if ( castExpr->get_results().empty() ) { |
---|
| 480 | output << "(void)" ; |
---|
| 481 | } else if ( ! castExpr->get_results().front()->get_isLvalue() ) { |
---|
| 482 | // at least one result type of cast, but not an lvalue |
---|
| 483 | output << "("; |
---|
| 484 | output << genType( castExpr->get_results().front(), "" ); |
---|
[71f4e4f] | 485 | output << ")"; |
---|
[803deb1] | 486 | } else { |
---|
| 487 | // otherwise, the cast is to an lvalue type, so the cast |
---|
| 488 | // should be dropped, since the result of a cast is |
---|
| 489 | // never an lvalue in C |
---|
[76b48f1] | 490 | } |
---|
[803deb1] | 491 | castExpr->get_arg()->accept( *this ); |
---|
| 492 | output << ")"; |
---|
[51587aa] | 493 | } |
---|
[71f4e4f] | 494 | |
---|
[6c4ff37] | 495 | void CodeGenerator::visit( UntypedMemberExpr *memberExpr ) { |
---|
[51587aa] | 496 | assert( false ); |
---|
| 497 | } |
---|
[71f4e4f] | 498 | |
---|
[6c4ff37] | 499 | void CodeGenerator::visit( MemberExpr *memberExpr ) { |
---|
[e04ef3a] | 500 | extension( memberExpr ); |
---|
[51587aa] | 501 | memberExpr->get_aggregate()->accept( *this ); |
---|
[6c4ff37] | 502 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 503 | } |
---|
[71f4e4f] | 504 | |
---|
[6c4ff37] | 505 | void CodeGenerator::visit( VariableExpr *variableExpr ) { |
---|
[e04ef3a] | 506 | extension( variableExpr ); |
---|
[51587aa] | 507 | OperatorInfo opInfo; |
---|
| 508 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 509 | output << opInfo.symbol; |
---|
[51587aa] | 510 | } else { |
---|
[6c4ff37] | 511 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 512 | } // if |
---|
| 513 | } |
---|
[71f4e4f] | 514 | |
---|
[6c4ff37] | 515 | void CodeGenerator::visit( ConstantExpr *constantExpr ) { |
---|
[51587aa] | 516 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 517 | extension( constantExpr ); |
---|
[51587aa] | 518 | constantExpr->get_constant()->accept( *this ); |
---|
| 519 | } |
---|
[71f4e4f] | 520 | |
---|
[6c4ff37] | 521 | void CodeGenerator::visit( SizeofExpr *sizeofExpr ) { |
---|
[e04ef3a] | 522 | extension( sizeofExpr ); |
---|
[6c4ff37] | 523 | output << "sizeof("; |
---|
[51587aa] | 524 | if ( sizeofExpr->get_isType() ) { |
---|
[6c4ff37] | 525 | output << genType( sizeofExpr->get_type(), "" ); |
---|
[51587aa] | 526 | } else { |
---|
| 527 | sizeofExpr->get_expr()->accept( *this ); |
---|
| 528 | } // if |
---|
[6c4ff37] | 529 | output << ")"; |
---|
[51587aa] | 530 | } |
---|
[47534159] | 531 | |
---|
[25a054f] | 532 | void CodeGenerator::visit( AlignofExpr *alignofExpr ) { |
---|
[e04ef3a] | 533 | extension( alignofExpr ); |
---|
[47534159] | 534 | // use GCC extension to avoid bumping std to C11 |
---|
| 535 | output << "__alignof__("; |
---|
[25a054f] | 536 | if ( alignofExpr->get_isType() ) { |
---|
| 537 | output << genType( alignofExpr->get_type(), "" ); |
---|
[47534159] | 538 | } else { |
---|
[25a054f] | 539 | alignofExpr->get_expr()->accept( *this ); |
---|
[47534159] | 540 | } // if |
---|
| 541 | output << ")"; |
---|
| 542 | } |
---|
[71f4e4f] | 543 | |
---|
[2a4b088] | 544 | void CodeGenerator::visit( UntypedOffsetofExpr *offsetofExpr ) { |
---|
[afc1045] | 545 | assert( false && "UntypedOffsetofExpr should not reach code generation" ); |
---|
[2a4b088] | 546 | } |
---|
| 547 | |
---|
[25a054f] | 548 | void CodeGenerator::visit( OffsetofExpr *offsetofExpr ) { |
---|
[e04ef3a] | 549 | extension( offsetofExpr ); |
---|
[25a054f] | 550 | // use GCC builtin |
---|
| 551 | output << "__builtin_offsetof("; |
---|
| 552 | output << genType( offsetofExpr->get_type(), "" ); |
---|
[e551c69] | 553 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 554 | output << ")"; |
---|
| 555 | } |
---|
[d63eeb0] | 556 | |
---|
[afc1045] | 557 | void CodeGenerator::visit( OffsetPackExpr *offsetPackExpr ) { |
---|
| 558 | assert( false && "OffsetPackExpr should not reach code generation" ); |
---|
| 559 | } |
---|
[70a06f6] | 560 | |
---|
[6c4ff37] | 561 | void CodeGenerator::visit( LogicalExpr *logicalExpr ) { |
---|
[e04ef3a] | 562 | extension( logicalExpr ); |
---|
[6c4ff37] | 563 | output << "("; |
---|
[51587aa] | 564 | logicalExpr->get_arg1()->accept( *this ); |
---|
| 565 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 566 | output << " && "; |
---|
[51587aa] | 567 | } else { |
---|
[6c4ff37] | 568 | output << " || "; |
---|
[51587aa] | 569 | } // if |
---|
| 570 | logicalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 571 | output << ")"; |
---|
[51587aa] | 572 | } |
---|
[71f4e4f] | 573 | |
---|
[6c4ff37] | 574 | void CodeGenerator::visit( ConditionalExpr *conditionalExpr ) { |
---|
[e04ef3a] | 575 | extension( conditionalExpr ); |
---|
[6c4ff37] | 576 | output << "("; |
---|
[51587aa] | 577 | conditionalExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 578 | output << " ? "; |
---|
[51587aa] | 579 | conditionalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 580 | output << " : "; |
---|
[51587aa] | 581 | conditionalExpr->get_arg3()->accept( *this ); |
---|
[6c4ff37] | 582 | output << ")"; |
---|
[51587aa] | 583 | } |
---|
[71f4e4f] | 584 | |
---|
[6c4ff37] | 585 | void CodeGenerator::visit( CommaExpr *commaExpr ) { |
---|
[e04ef3a] | 586 | extension( commaExpr ); |
---|
[6c4ff37] | 587 | output << "("; |
---|
[51587aa] | 588 | commaExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 589 | output << " , "; |
---|
[51587aa] | 590 | commaExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 591 | output << ")"; |
---|
[51587aa] | 592 | } |
---|
[71f4e4f] | 593 | |
---|
[6c4ff37] | 594 | void CodeGenerator::visit( TupleExpr *tupleExpr ) {} |
---|
[71f4e4f] | 595 | |
---|
[6c4ff37] | 596 | void CodeGenerator::visit( TypeExpr *typeExpr ) {} |
---|
[2b6c1e0] | 597 | |
---|
[7f5566b] | 598 | void CodeGenerator::visit( AsmExpr *asmExpr ) { |
---|
[e04ef3a] | 599 | extension( asmExpr ); |
---|
[7f5566b] | 600 | if ( asmExpr->get_inout() ) { |
---|
| 601 | output << "[ "; |
---|
| 602 | asmExpr->get_inout()->accept( *this ); |
---|
| 603 | output << " ] "; |
---|
| 604 | } // if |
---|
| 605 | asmExpr->get_constraint()->accept( *this ); |
---|
| 606 | output << " ( "; |
---|
| 607 | asmExpr->get_operand()->accept( *this ); |
---|
| 608 | output << " )"; |
---|
| 609 | } |
---|
| 610 | |
---|
[51587aa] | 611 | //*** Statements |
---|
[6c4ff37] | 612 | void CodeGenerator::visit( CompoundStmt *compoundStmt ) { |
---|
[51587aa] | 613 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 614 | output << "{" << endl; |
---|
[51587aa] | 615 | |
---|
[2b6c1e0] | 616 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 617 | |
---|
[7f5566b] | 618 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 619 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[7f5566b] | 620 | (*i)->accept( *this ); |
---|
[2b6c1e0] | 621 | |
---|
[6c4ff37] | 622 | output << endl; |
---|
[2b6c1e0] | 623 | if ( wantSpacing( *i ) ) { |
---|
| 624 | output << endl; |
---|
| 625 | } |
---|
[51587aa] | 626 | } |
---|
[71f4e4f] | 627 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 628 | |
---|
[cda48b6] | 629 | output << indent << "}"; |
---|
[51587aa] | 630 | } |
---|
| 631 | |
---|
[6c4ff37] | 632 | void CodeGenerator::visit( ExprStmt *exprStmt ) { |
---|
| 633 | assert( exprStmt ); |
---|
[321a2481] | 634 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 635 | Expression * expr = new CastExpr( exprStmt->get_expr() ); |
---|
| 636 | expr->accept( *this ); |
---|
| 637 | output << ";"; |
---|
[51587aa] | 638 | } |
---|
| 639 | |
---|
[7f5566b] | 640 | void CodeGenerator::visit( AsmStmt *asmStmt ) { |
---|
| 641 | output << "asm "; |
---|
| 642 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 643 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 644 | output << "( "; |
---|
| 645 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 646 | output << " : "; |
---|
| 647 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 648 | output << " : "; |
---|
| 649 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 650 | output << " : "; |
---|
| 651 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 652 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 653 | output << " : "; |
---|
| 654 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 655 | output << *begin++; |
---|
| 656 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 657 | output << ", "; |
---|
| 658 | } // for |
---|
| 659 | } // if |
---|
| 660 | output << " );" ; |
---|
| 661 | } |
---|
| 662 | |
---|
[6c4ff37] | 663 | void CodeGenerator::visit( IfStmt *ifStmt ) { |
---|
[7f5566b] | 664 | output << "if ( "; |
---|
| 665 | ifStmt->get_condition()->accept( *this ); |
---|
| 666 | output << " ) "; |
---|
[51587aa] | 667 | |
---|
[7f5566b] | 668 | ifStmt->get_thenPart()->accept( *this ); |
---|
[51587aa] | 669 | |
---|
| 670 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 671 | output << " else "; |
---|
[7f5566b] | 672 | ifStmt->get_elsePart()->accept( *this ); |
---|
[51587aa] | 673 | } // if |
---|
| 674 | } |
---|
| 675 | |
---|
[6c4ff37] | 676 | void CodeGenerator::visit( SwitchStmt *switchStmt ) { |
---|
[7f5566b] | 677 | output << "switch ( " ; |
---|
| 678 | switchStmt->get_condition()->accept( *this ); |
---|
| 679 | output << " ) "; |
---|
[71f4e4f] | 680 | |
---|
[2b6c1e0] | 681 | output << "{" << std::endl; |
---|
[6c4ff37] | 682 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 683 | |
---|
[6c4ff37] | 684 | acceptAll( switchStmt->get_branches(), *this ); |
---|
[51587aa] | 685 | |
---|
[6c4ff37] | 686 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 687 | |
---|
[cda48b6] | 688 | output << indent << "}"; |
---|
[51587aa] | 689 | } |
---|
| 690 | |
---|
[6c4ff37] | 691 | void CodeGenerator::visit( CaseStmt *caseStmt ) { |
---|
[cda48b6] | 692 | output << indent; |
---|
[eb3261f] | 693 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 694 | output << "default"; |
---|
[eb3261f] | 695 | } else { |
---|
[2b6c1e0] | 696 | output << "case "; |
---|
[7f5566b] | 697 | caseStmt->get_condition()->accept( *this ); |
---|
[17cd4eb] | 698 | } // if |
---|
[6c4ff37] | 699 | output << ":\n"; |
---|
[71f4e4f] | 700 | |
---|
[51587aa] | 701 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 702 | |
---|
[6c4ff37] | 703 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 704 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[cda48b6] | 705 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[7f5566b] | 706 | (*i)->accept( *this ); |
---|
[6c4ff37] | 707 | output << endl; |
---|
[51587aa] | 708 | } |
---|
[6c4ff37] | 709 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 710 | } |
---|
| 711 | |
---|
[6c4ff37] | 712 | void CodeGenerator::visit( BranchStmt *branchStmt ) { |
---|
[51587aa] | 713 | switch ( branchStmt->get_type()) { |
---|
| 714 | case BranchStmt::Goto: |
---|
| 715 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 716 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 717 | else { |
---|
[51587aa] | 718 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 719 | output << "goto *"; |
---|
[51587aa] | 720 | branchStmt->get_computedTarget()->accept( *this ); |
---|
| 721 | } // if |
---|
| 722 | } // if |
---|
| 723 | break; |
---|
| 724 | case BranchStmt::Break: |
---|
[6c4ff37] | 725 | output << "break"; |
---|
[51587aa] | 726 | break; |
---|
| 727 | case BranchStmt::Continue: |
---|
[6c4ff37] | 728 | output << "continue"; |
---|
[51587aa] | 729 | break; |
---|
| 730 | } |
---|
[2b6c1e0] | 731 | output << ";"; |
---|
[51587aa] | 732 | } |
---|
| 733 | |
---|
| 734 | |
---|
[6c4ff37] | 735 | void CodeGenerator::visit( ReturnStmt *returnStmt ) { |
---|
| 736 | output << "return "; |
---|
[51587aa] | 737 | |
---|
| 738 | // xxx -- check for null expression; |
---|
| 739 | if ( returnStmt->get_expr() ) { |
---|
| 740 | returnStmt->get_expr()->accept( *this ); |
---|
| 741 | } // if |
---|
[6c4ff37] | 742 | output << ";"; |
---|
[51587aa] | 743 | } |
---|
| 744 | |
---|
[6c4ff37] | 745 | void CodeGenerator::visit( WhileStmt *whileStmt ) { |
---|
[321a2481] | 746 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 747 | output << "do" ; |
---|
[321a2481] | 748 | } else { |
---|
[6c4ff37] | 749 | output << "while (" ; |
---|
[7f5566b] | 750 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 751 | output << ")"; |
---|
[51587aa] | 752 | } // if |
---|
[2b6c1e0] | 753 | output << " "; |
---|
[51587aa] | 754 | |
---|
[2b6c1e0] | 755 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[51587aa] | 756 | whileStmt->get_body()->accept( *this ); |
---|
| 757 | |
---|
[cda48b6] | 758 | output << indent; |
---|
[51587aa] | 759 | |
---|
| 760 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 761 | output << " while (" ; |
---|
[7f5566b] | 762 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 763 | output << ");"; |
---|
[51587aa] | 764 | } // if |
---|
| 765 | } |
---|
| 766 | |
---|
[6c4ff37] | 767 | void CodeGenerator::visit( ForStmt *forStmt ) { |
---|
[71f4e4f] | 768 | // initialization is always hoisted, so don't |
---|
| 769 | // bother doing anything with that |
---|
[145f1fc] | 770 | output << "for (;"; |
---|
[51587aa] | 771 | |
---|
[321a2481] | 772 | if ( forStmt->get_condition() != 0 ) { |
---|
[51587aa] | 773 | forStmt->get_condition()->accept( *this ); |
---|
[321a2481] | 774 | } |
---|
[6c4ff37] | 775 | output << ";"; |
---|
[51587aa] | 776 | |
---|
[321a2481] | 777 | if ( forStmt->get_increment() != 0 ) { |
---|
| 778 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 779 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
| 780 | expr->accept( *this ); |
---|
| 781 | } |
---|
[2b6c1e0] | 782 | output << ") "; |
---|
[51587aa] | 783 | |
---|
| 784 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 785 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[51587aa] | 786 | forStmt->get_body()->accept( *this ); |
---|
| 787 | } // if |
---|
| 788 | } |
---|
| 789 | |
---|
[6c4ff37] | 790 | void CodeGenerator::visit( NullStmt *nullStmt ) { |
---|
[cda48b6] | 791 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 792 | output << "/* null statement */ ;"; |
---|
[51587aa] | 793 | } |
---|
| 794 | |
---|
[6c4ff37] | 795 | void CodeGenerator::visit( DeclStmt *declStmt ) { |
---|
[51587aa] | 796 | declStmt->get_decl()->accept( *this ); |
---|
[71f4e4f] | 797 | |
---|
[51587aa] | 798 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 799 | output << ";"; |
---|
[51587aa] | 800 | } // if |
---|
| 801 | } |
---|
| 802 | |
---|
[6c4ff37] | 803 | std::string CodeGenerator::printLabels( std::list< Label > &l ) { |
---|
[51587aa] | 804 | std::string str( "" ); |
---|
[6c4ff37] | 805 | l.unique(); // assumes a sorted list. Why not use set? |
---|
[51587aa] | 806 | |
---|
| 807 | for ( std::list< Label >::iterator i = l.begin(); i != l.end(); i++ ) |
---|
| 808 | str += *i + ": "; |
---|
| 809 | |
---|
| 810 | return str; |
---|
| 811 | } |
---|
| 812 | |
---|
[6c4ff37] | 813 | void CodeGenerator::handleStorageClass( Declaration *decl ) { |
---|
[51587aa] | 814 | switch ( decl->get_storageClass() ) { |
---|
[68cd1ce] | 815 | case DeclarationNode::Extern: |
---|
[6c4ff37] | 816 | output << "extern "; |
---|
[51587aa] | 817 | break; |
---|
[68cd1ce] | 818 | case DeclarationNode::Static: |
---|
[6c4ff37] | 819 | output << "static "; |
---|
[51587aa] | 820 | break; |
---|
[68cd1ce] | 821 | case DeclarationNode::Auto: |
---|
[51587aa] | 822 | // silently drop storage class |
---|
| 823 | break; |
---|
[68cd1ce] | 824 | case DeclarationNode::Register: |
---|
[6c4ff37] | 825 | output << "register "; |
---|
[51587aa] | 826 | break; |
---|
[68cd1ce] | 827 | case DeclarationNode::Inline: |
---|
[de62360d] | 828 | output << "inline "; |
---|
[f38c8d9] | 829 | break; |
---|
[68cd1ce] | 830 | case DeclarationNode::Fortran: |
---|
| 831 | output << "fortran "; |
---|
| 832 | break; |
---|
| 833 | case DeclarationNode::Noreturn: |
---|
| 834 | output << "_Noreturn "; |
---|
| 835 | break; |
---|
| 836 | case DeclarationNode::Threadlocal: |
---|
| 837 | output << "_Thread_local "; |
---|
| 838 | break; |
---|
| 839 | case DeclarationNode::NoStorageClass: |
---|
[f38c8d9] | 840 | break; |
---|
[843054c2] | 841 | } // switch |
---|
[51587aa] | 842 | } |
---|
[51b7345] | 843 | } // namespace CodeGen |
---|
[51587aa] | 844 | |
---|
| 845 | // Local Variables: // |
---|
| 846 | // tab-width: 4 // |
---|
| 847 | // mode: c++ // |
---|
| 848 | // compile-command: "make install" // |
---|
| 849 | // End: // |
---|