source: src/CodeGen/CodeGenerator.cc@ bb0f974

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr no_list persistent-indexer pthread-emulation qualifiedEnum
Last change on this file since bb0f974 was 0b3b2ae, checked in by Rob Schluntz <rschlunt@…>, 7 years ago

Minor code cleanup
  • Property mode set to 100644
File size: 36.4 KB
RevLine 
[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
[e612146c]11// Last Modified By : Peter A. Buhr
[d7312ac]12// Last Modified On : Sat May 5 09:08:32 2018
13// Update Count : 494
[51587aa]14//
[3268a58]15#include "CodeGenerator.h"
[51587aa]16
[bf2438c]17#include <cassert> // for assert, assertf
18#include <list> // for _List_iterator, list, list<>::it...
[51b73452]19
[bf2438c]20#include "Common/UniqueName.h" // for UniqueName
21#include "Common/utility.h" // for CodeLocation, toString
22#include "GenType.h" // for genType
23#include "InitTweak/InitTweak.h" // for getPointerBase
24#include "OperatorTable.h" // for OperatorInfo, operatorLookup
25#include "Parser/LinkageSpec.h" // for Spec, Intrinsic
26#include "SynTree/Attribute.h" // for Attribute
27#include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode
28#include "SynTree/Constant.h" // for Constant
29#include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl
30#include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica...
31#include "SynTree/Initializer.h" // for Initializer, ListInit, Designation
32#include "SynTree/Label.h" // for Label, operator<<
33#include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt
34#include "SynTree/Type.h" // for Type, Type::StorageClasses, Func...
[10a7775]35
[51b73452]36using namespace std;
37
38namespace CodeGen {
[6c4ff37]39 int CodeGenerator::tabsize = 4;
[51587aa]40
[145f1fc]41 // the kinds of statements that would ideally be followed by whitespace
[2b6c1e0]42 bool wantSpacing( Statement * stmt) {
43 return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) ||
[08061589]44 dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt );
[2b6c1e0]45 }
46
[8688ce1]47 void CodeGenerator::extension( Expression * expr ) {
[8e9cbb2]48 if ( expr->get_extension() ) {
49 output << "__extension__ ";
50 } // if
51 } // extension
52
[8688ce1]53 void CodeGenerator::extension( Declaration * decl ) {
[8e9cbb2]54 if ( decl->get_extension() ) {
55 output << "__extension__ ";
56 } // if
57 } // extension
58
[58dd019]59 void CodeGenerator::asmName( DeclarationWithType * decl ) {
[e612146c]60 if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) {
[58dd019]61 output << " asm ( " << asmName->get_constant()->get_value() << " )";
62 } // if
63 } // extension
64
[888cbe4]65 CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) {
66 labels = &l;
67 return *this;
68 }
69
[8688ce1]70 ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) {
[888cbe4]71 std::list< Label > & labs = *printLabels.labels;
72 // l.unique(); // assumes a sorted list. Why not use set? Does order matter?
73 for ( Label & l : labs ) {
74 output << l.get_name() + ": ";
75 printLabels.cg.genAttributes( l.get_attributes() );
[8688ce1]76 } // for
[888cbe4]77 return output;
78 }
79
[d22e90f]80 /* Using updateLocation at the beginning of a node and endl
[8bafacc]81 * within a node should become the method of formating.
82 */
83 void CodeGenerator::updateLocation( CodeLocation const & to ) {
[d22e90f]84 // skip if linemarks shouldn't appear or if codelocation is unset
85 if ( !lineMarks || to.isUnset() ) return;
86
87 if ( currentLocation.followedBy( to, 0 ) ) {
[8bafacc]88 return;
89 } else if ( currentLocation.followedBy( to, 1 ) ) {
90 output << "\n" << indent;
[d48e529]91 currentLocation.first_line += 1;
[8bafacc]92 } else if ( currentLocation.followedBy( to, 2 ) ) {
93 output << "\n\n" << indent;
[d48e529]94 currentLocation.first_line += 2;
[8bafacc]95 } else {
[d48e529]96 output << "\n# " << to.first_line << " \"" << to.filename
[8bafacc]97 << "\"\n" << indent;
98 currentLocation = to;
99 }
100 output << std::flush;
101 }
[c850687]102
[8bafacc]103 void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) {
104 updateLocation( to->location );
[c850687]105 }
106
[d22e90f]107 // replace endl
108 ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const {
109 // if ( !cg.lineMarks ) {
110 // os << "\n" << cg.indent << std::flush;
111 // }
112 os << "\n" << std::flush;
113 cg.currentLocation.first_line++;
114 // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/";
115 return os;
[c850687]116 }
117
[5f08961d]118 CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks, bool printExprTypes ) : indent( CodeGenerator::tabsize ), output( os ), printLabels( *this ), pretty( pretty ), genC( genC ), lineMarks( lineMarks ), printExprTypes( printExprTypes ), endl( *this ) {}
[cda48b6]119
[486341f]120 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]121 // GCC builtins should always be printed unmangled
122 if ( pretty || decl->linkage.is_gcc_builtin ) return decl->name;
123 if ( decl->mangleName != "" ) {
[f326f99]124 // need to incorporate scope level in order to differentiate names for destructors
125 return decl->get_scopedMangleName();
[51587aa]126 } else {
[13073be]127 return decl->name;
[51587aa]128 } // if
129 }
[94b4364]130
[44a81853]131 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
132 if ( attributes.empty() ) return;
133 output << "__attribute__ ((";
134 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]135 output << (*attr)->name;
136 if ( ! (*attr)->parameters.empty() ) {
[44a81853]137 output << "(";
[85b2300]138 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]139 output << ")";
140 } // if
141 if ( ++attr == attributes.end() ) break;
142 output << ","; // separator
143 } // for
144 output << ")) ";
145 } // CodeGenerator::genAttributes
[7baed7d]146
[9857e8d]147 // *** BaseSyntaxNode
[d22e90f]148 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]149 // turn off automatic recursion for all nodes, to allow each visitor to
150 // precisely control the order in which its children are visited.
151 visit_children = false;
[d22e90f]152 updateLocation( node );
[9857e8d]153 }
154
155 // *** BaseSyntaxNode
156 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
157 std::stringstream ss;
158 node->print( ss );
159 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
160 }
[7baed7d]161
[5f08961d]162 // *** Expression
163 void CodeGenerator::previsit( Expression * node ) {
164 previsit( (BaseSyntaxNode *)node );
165 GuardAction( [this, node](){
[0b3b2ae]166 if ( printExprTypes && node->result ) {
[5f08961d]167 output << " /* " << genType( node->result, "", pretty, genC ) << " */ ";
168 }
169 } );
170 }
171
[4810867]172 // *** Declarations
[9857e8d]173 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]174 // deleted decls should never be used, so don't print them
175 if ( functionDecl->isDeleted && genC ) return;
[8e9cbb2]176 extension( functionDecl );
[7baed7d]177 genAttributes( functionDecl->get_attributes() );
178
[51587aa]179 handleStorageClass( functionDecl );
[6e8bd43]180 functionDecl->get_funcSpec().print( output );
[dd020c0]181
[e39241b]182 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), pretty, genC );
[51587aa]183
[58dd019]184 asmName( functionDecl );
185
[51587aa]186 if ( functionDecl->get_statements() ) {
[9857e8d]187 functionDecl->get_statements()->accept( *visitor );
[51587aa]188 } // if
[3ed994e]189 if ( functionDecl->isDeleted ) {
190 output << " = void";
191 }
[51587aa]192 }
193
[9857e8d]194 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]195 // deleted decls should never be used, so don't print them
196 if ( objectDecl->isDeleted && genC ) return;
[e39241b]197 if (objectDecl->get_name().empty() && genC ) {
198 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]199 static UniqueName name = { "__anonymous_object" };
200 objectDecl->set_name( name.newName() );
201 }
202
[8e9cbb2]203 extension( objectDecl );
[f9cebb5]204 genAttributes( objectDecl->get_attributes() );
205
[51587aa]206 handleStorageClass( objectDecl );
[e39241b]207 output << genType( objectDecl->get_type(), mangleName( objectDecl ), pretty, genC );
[71f4e4f]208
[58dd019]209 asmName( objectDecl );
210
[51587aa]211 if ( objectDecl->get_init() ) {
[6c4ff37]212 output << " = ";
[9857e8d]213 objectDecl->get_init()->accept( *visitor );
[51587aa]214 } // if
[3ed994e]215 if ( objectDecl->isDeleted ) {
216 output << " = void";
217 }
[3778cb2]218
[51587aa]219 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]220 output << ":";
[9857e8d]221 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]222 } // if
223 }
224
[5f642e38]225 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[0b3b2ae]226 if( ! aggDecl->parameters.empty() && ! genC ) {
[e39241b]227 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
228 output << "forall(";
[0b3b2ae]229 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]230 output << ")" << endl;
[e6cee92]231 output << indent;
[e39241b]232 }
233
[593370c]234 output << kind;
[0b3b2ae]235 genAttributes( aggDecl->attributes );
236 output << aggDecl->name;
[71f4e4f]237
[2c57025]238 if ( aggDecl->has_body() ) {
[0b3b2ae]239 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]240 output << " {" << endl;
[51587aa]241
[f7cb0bc]242 ++indent;
[3778cb2]243 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]244 output << indent;
[9857e8d]245 (*i)->accept( *visitor );
[6c4ff37]246 output << ";" << endl;
[3778cb2]247 } // for
[51587aa]248
[f7cb0bc]249 --indent;
[51587aa]250
[cda48b6]251 output << indent << "}";
[17cd4eb]252 } // if
[51587aa]253 }
[17cd4eb]254
[9857e8d]255 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]256 extension( structDecl );
[5f642e38]257 handleAggregate( structDecl, "struct " );
[51587aa]258 }
[17cd4eb]259
[9857e8d]260 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]261 extension( unionDecl );
[5f642e38]262 handleAggregate( unionDecl, "union " );
[51587aa]263 }
[71f4e4f]264
[9857e8d]265 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]266 extension( enumDecl );
[6c4ff37]267 output << "enum ";
[c0aa336]268 genAttributes( enumDecl->get_attributes() );
[51587aa]269
[a984e65]270 output << enumDecl->get_name();
[71f4e4f]271
[8e9cbb2]272 std::list< Declaration* > &memb = enumDecl->get_members();
[51587aa]273
274 if ( ! memb.empty() ) {
[cda48b6]275 output << " {" << endl;
[51587aa]276
[f7cb0bc]277 ++indent;
[51587aa]278 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]279 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]280 assert( obj );
[87e08e24]281 output << indent << mangleName( obj );
[51587aa]282 if ( obj->get_init() ) {
[6c4ff37]283 output << " = ";
[9857e8d]284 obj->get_init()->accept( *visitor );
[51587aa]285 } // if
[6c4ff37]286 output << "," << endl;
[51587aa]287 } // for
288
[f7cb0bc]289 --indent;
[51587aa]290
[cda48b6]291 output << indent << "}";
[51587aa]292 } // if
293 }
[71f4e4f]294
[9857e8d]295 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[a0c7dc36]296 assertf( ! genC, "TraitDecls should not reach code generation." );
[a984e65]297 extension( traitDecl );
298 handleAggregate( traitDecl, "trait " );
299 }
[71f4e4f]300
[9857e8d]301 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[e39241b]302 assertf( ! genC, "Typedefs are removed and substituted in earlier passes." );
303 output << "typedef ";
304 output << genType( typeDecl->get_base(), typeDecl->get_name(), pretty, genC ) << endl;
[51587aa]305 }
[71f4e4f]306
[9857e8d]307 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[a0c7dc36]308 assertf( ! genC, "TypeDecls should not reach code generation." );
[ab4bff5]309 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]310 if ( typeDecl->sized ) {
[ab4bff5]311 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]312 }
[ab4bff5]313 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]314 output << " | { ";
[ab4bff5]315 for ( DeclarationWithType * assert : typeDecl->assertions ) {
316 assert->accept( *visitor );
317 output << "; ";
318 }
[a0c7dc36]319 output << " }";
[e39241b]320 }
[51587aa]321 }
322
[92fea32]323 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
324 output << "_Static_assert(";
325 assertDecl->condition->accept( *visitor );
326 output << ", ";
327 assertDecl->message->accept( *visitor );
328 output << ")";
329 }
330
[9857e8d]331 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]332 std::list< Expression * > designators = designation->get_designators();
[e45215c]333 if ( designators.size() == 0 ) return;
[e4d829b]334 for ( Expression * des : designators ) {
[62423350]335 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
336 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
337 output << ".";
[9857e8d]338 des->accept( *visitor );
[e4d829b]339 } else {
[62423350]340 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array eleemnt
341 output << "[";
[9857e8d]342 des->accept( *visitor );
[62423350]343 output << "]";
[3778cb2]344 } // if
345 } // for
[e45215c]346 output << " = ";
347 }
348
[9857e8d]349 void CodeGenerator::postvisit( SingleInit * init ) {
350 init->get_value()->accept( *visitor );
[51587aa]351 }
352
[9857e8d]353 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]354 auto initBegin = init->begin();
355 auto initEnd = init->end();
356 auto desigBegin = init->get_designations().begin();
357 auto desigEnd = init->get_designations().end();
358
[6c4ff37]359 output << "{ ";
[e4d829b]360 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]361 (*desigBegin)->accept( *visitor );
362 (*initBegin)->accept( *visitor );
[e4d829b]363 ++initBegin, ++desigBegin;
364 if ( initBegin != initEnd ) {
365 output << ", ";
366 }
367 }
[6c4ff37]368 output << " }";
[e4d829b]369 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]370 }
371
[d22e90f]372 void CodeGenerator::postvisit( ConstructorInit * init ){
[e39241b]373 assertf( ! genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]374 // pseudo-output for constructor/destructor pairs
[d22e90f]375 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]376 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]377 output << ", " << endl << indent << "dtor: ";
[9857e8d]378 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]379 output << endl << --indent << "}";
[fc638d2]380 }
381
[9857e8d]382 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]383 output << constant->get_value();
[51587aa]384 }
385
[4810867]386 // *** Expressions
[9857e8d]387 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]388 extension( applicationExpr );
[8688ce1]389 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[51587aa]390 OperatorInfo opInfo;
391 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) {
392 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
393 switch ( opInfo.type ) {
394 case OT_INDEX:
395 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]396 (*arg++)->accept( *visitor );
[6c4ff37]397 output << "[";
[9857e8d]398 (*arg)->accept( *visitor );
[6c4ff37]399 output << "]";
[51587aa]400 break;
[71f4e4f]401
[51587aa]402 case OT_CALL:
[356189a]403 // there are no intrinsic definitions of the function call operator
[51587aa]404 assert( false );
405 break;
[71f4e4f]406
[f1e012b]407 case OT_CTOR:
[c2ce2350]408 case OT_DTOR:
[356189a]409 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]410 // the expression fed into a single parameter constructor or destructor may contain side
411 // effects, so must still output this expression
[64071c2]412 output << "(";
[9857e8d]413 (*arg++)->accept( *visitor );
[64071c2]414 output << ") /* " << opInfo.inputName << " */";
[356189a]415 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]416 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]417 output << "(";
[9857e8d]418 (*arg++)->accept( *visitor );
[356189a]419 output << opInfo.symbol;
[9857e8d]420 (*arg)->accept( *visitor );
[c2ce2350]421 output << ") /* " << opInfo.inputName << " */";
[356189a]422 } else {
[c2ce2350]423 // no constructors with 0 or more than 2 parameters
[356189a]424 assert( false );
[8688ce1]425 } // if
[356189a]426 break;
[f1e012b]427
[51587aa]428 case OT_PREFIX:
429 case OT_PREFIXASSIGN:
430 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]431 output << "(";
432 output << opInfo.symbol;
[9857e8d]433 (*arg)->accept( *visitor );
[6c4ff37]434 output << ")";
[51587aa]435 break;
[71f4e4f]436
[51587aa]437 case OT_POSTFIX:
438 case OT_POSTFIXASSIGN:
439 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]440 (*arg)->accept( *visitor );
[6c4ff37]441 output << opInfo.symbol;
[51587aa]442 break;
443
[f1e012b]444
[51587aa]445 case OT_INFIX:
446 case OT_INFIXASSIGN:
447 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]448 output << "(";
[9857e8d]449 (*arg++)->accept( *visitor );
[6c4ff37]450 output << opInfo.symbol;
[9857e8d]451 (*arg)->accept( *visitor );
[6c4ff37]452 output << ")";
[51587aa]453 break;
[71f4e4f]454
[51587aa]455 case OT_CONSTANT:
[721f17a]456 case OT_LABELADDRESS:
457 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]458 assert( false );
[3778cb2]459 } // switch
[17cd4eb]460 } else {
[9857e8d]461 varExpr->accept( *visitor );
[6c4ff37]462 output << "(";
[51587aa]463 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]464 output << ")";
[17cd4eb]465 } // if
[51587aa]466 } else {
[9857e8d]467 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]468 output << "(";
[51587aa]469 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]470 output << ")";
[51587aa]471 } // if
472 }
[71f4e4f]473
[9857e8d]474 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]475 extension( untypedExpr );
[22bc276]476 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[51587aa]477 OperatorInfo opInfo;
[22bc276]478 if ( operatorLookup( nameExpr->name, opInfo ) ) {
479 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[51587aa]480 switch ( opInfo.type ) {
481 case OT_INDEX:
[22bc276]482 assert( untypedExpr->args.size() == 2 );
[9857e8d]483 (*arg++)->accept( *visitor );
[6c4ff37]484 output << "[";
[9857e8d]485 (*arg)->accept( *visitor );
[6c4ff37]486 output << "]";
[51587aa]487 break;
[71f4e4f]488
[51587aa]489 case OT_CALL:
[f1e012b]490 assert( false );
491
[c2ce2350]492 case OT_CTOR:
493 case OT_DTOR:
[22bc276]494 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]495 // the expression fed into a single parameter constructor or destructor may contain side
496 // effects, so must still output this expression
[64071c2]497 output << "(";
[9857e8d]498 (*arg++)->accept( *visitor );
[64071c2]499 output << ") /* " << opInfo.inputName << " */";
[c2ce2350]500 } else if ( untypedExpr->get_args().size() == 2 ) {
501 // intrinsic two parameter constructors are essentially bitwise assignment
502 output << "(";
[9857e8d]503 (*arg++)->accept( *visitor );
[c2ce2350]504 output << opInfo.symbol;
[9857e8d]505 (*arg)->accept( *visitor );
[c2ce2350]506 output << ") /* " << opInfo.inputName << " */";
507 } else {
508 // no constructors with 0 or more than 2 parameters
[4e8949f]509 assertf( ! genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
510 output << "(";
511 (*arg++)->accept( *visitor );
512 output << opInfo.symbol << "{ ";
[22bc276]513 genCommaList( arg, untypedExpr->args.end() );
[4e8949f]514 output << "}) /* " << opInfo.inputName << " */";
[3778cb2]515 } // if
[51587aa]516 break;
[71f4e4f]517
[51587aa]518 case OT_PREFIX:
519 case OT_PREFIXASSIGN:
[de62360d]520 case OT_LABELADDRESS:
[22bc276]521 assert( untypedExpr->args.size() == 1 );
[6c4ff37]522 output << "(";
523 output << opInfo.symbol;
[9857e8d]524 (*arg)->accept( *visitor );
[6c4ff37]525 output << ")";
[51587aa]526 break;
[71f4e4f]527
[51587aa]528 case OT_POSTFIX:
529 case OT_POSTFIXASSIGN:
[22bc276]530 assert( untypedExpr->args.size() == 1 );
[9857e8d]531 (*arg)->accept( *visitor );
[6c4ff37]532 output << opInfo.symbol;
[51587aa]533 break;
[71f4e4f]534
[51587aa]535 case OT_INFIX:
536 case OT_INFIXASSIGN:
[22bc276]537 assert( untypedExpr->args.size() == 2 );
[6c4ff37]538 output << "(";
[9857e8d]539 (*arg++)->accept( *visitor );
[6c4ff37]540 output << opInfo.symbol;
[9857e8d]541 (*arg)->accept( *visitor );
[6c4ff37]542 output << ")";
[51587aa]543 break;
[71f4e4f]544
[51587aa]545 case OT_CONSTANT:
546 // there are no intrinsic definitions of 0 or 1 as functions
547 assert( false );
[3778cb2]548 } // switch
[51587aa]549 } else {
[22bc276]550 // builtin routines
551 nameExpr->accept( *visitor );
552 output << "(";
553 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
554 output << ")";
[51587aa]555 } // if
556 } else {
[22bc276]557 untypedExpr->function->accept( *visitor );
[6c4ff37]558 output << "(";
[22bc276]559 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]560 output << ")";
[51587aa]561 } // if
562 }
[71f4e4f]563
[9857e8d]564 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]565 rangeExpr->low->accept( *visitor );
[064e3ff]566 output << " ... ";
[22bc276]567 rangeExpr->high->accept( *visitor );
[064e3ff]568 }
569
[9857e8d]570 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]571 extension( nameExpr );
[51587aa]572 OperatorInfo opInfo;
[5ea7a22]573 if ( operatorLookup( nameExpr->name, opInfo ) ) {
574 if ( opInfo.type == OT_CONSTANT ) {
575 output << opInfo.symbol;
576 } else {
577 output << opInfo.outputName;
578 }
[51587aa]579 } else {
[6c4ff37]580 output << nameExpr->get_name();
[51587aa]581 } // if
582 }
[71f4e4f]583
[9857e8d]584 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]585 extension( addressExpr );
[6c4ff37]586 output << "(&";
[9857e8d]587 addressExpr->arg->accept( *visitor );
[6c4ff37]588 output << ")";
[51587aa]589 }
590
[9857e8d]591 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]592 extension( addressExpr );
593 output << "(&&" << addressExpr->arg << ")";
594 }
595
[9857e8d]596 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]597 extension( castExpr );
[803deb1]598 output << "(";
[906e24d]599 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]600 output << "(void)";
[d104b02]601 } else {
602 // at least one result type of cast.
603 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
604 // an lvalue cast, this has been taken out.
[803deb1]605 output << "(";
[e39241b]606 output << genType( castExpr->get_result(), "", pretty, genC );
[71f4e4f]607 output << ")";
[3778cb2]608 } // if
[da9d79b]609 castExpr->arg->accept( *visitor );
610 output << ")";
611 }
612
613 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
614 assertf( ! genC, "KeywordCast should not reach code generation." );
615 extension( castExpr );
616 output << "((" << castExpr->targetString() << " &)";
617 castExpr->arg->accept( *visitor );
[803deb1]618 output << ")";
[51587aa]619 }
[71f4e4f]620
[9857e8d]621 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[a5f0529]622 assertf( ! genC, "VirtualCastExpr should not reach code generation." );
623 extension( castExpr );
624 output << "(virtual ";
[9857e8d]625 castExpr->get_arg()->accept( *visitor );
[a5f0529]626 output << ")";
627 }
628
[9857e8d]629 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[e39241b]630 assertf( ! genC, "UntypedMemberExpr should not reach code generation." );
631 extension( memberExpr );
[9857e8d]632 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]633 output << ".";
[9857e8d]634 memberExpr->get_member()->accept( *visitor );
[51587aa]635 }
[71f4e4f]636
[9857e8d]637 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]638 extension( memberExpr );
[9857e8d]639 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]640 output << "." << mangleName( memberExpr->get_member() );
[51587aa]641 }
[71f4e4f]642
[9857e8d]643 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]644 extension( variableExpr );
[51587aa]645 OperatorInfo opInfo;
646 if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) {
[6c4ff37]647 output << opInfo.symbol;
[51587aa]648 } else {
[6c4ff37]649 output << mangleName( variableExpr->get_var() );
[51587aa]650 } // if
651 }
[71f4e4f]652
[9857e8d]653 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]654 assert( constantExpr->get_constant() );
[e04ef3a]655 extension( constantExpr );
[9857e8d]656 constantExpr->get_constant()->accept( *visitor );
[51587aa]657 }
[71f4e4f]658
[9857e8d]659 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]660 extension( sizeofExpr );
[6c4ff37]661 output << "sizeof(";
[51587aa]662 if ( sizeofExpr->get_isType() ) {
[e39241b]663 output << genType( sizeofExpr->get_type(), "", pretty, genC );
[51587aa]664 } else {
[9857e8d]665 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]666 } // if
[6c4ff37]667 output << ")";
[51587aa]668 }
[47534159]669
[9857e8d]670 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]671 // use GCC extension to avoid bumping std to C11
[8e9cbb2]672 extension( alignofExpr );
[47534159]673 output << "__alignof__(";
[25a054f]674 if ( alignofExpr->get_isType() ) {
[e39241b]675 output << genType( alignofExpr->get_type(), "", pretty, genC );
[47534159]676 } else {
[9857e8d]677 alignofExpr->get_expr()->accept( *visitor );
[47534159]678 } // if
679 output << ")";
680 }
[71f4e4f]681
[9857e8d]682 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[e39241b]683 assertf( ! genC, "UntypedOffsetofExpr should not reach code generation." );
684 output << "offsetof(";
685 output << genType( offsetofExpr->get_type(), "", pretty, genC );
686 output << ", " << offsetofExpr->get_member();
687 output << ")";
[2a4b088]688 }
689
[9857e8d]690 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]691 // use GCC builtin
692 output << "__builtin_offsetof(";
[e39241b]693 output << genType( offsetofExpr->get_type(), "", pretty, genC );
[e551c69]694 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]695 output << ")";
696 }
[d63eeb0]697
[9857e8d]698 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[e39241b]699 assertf( ! genC, "OffsetPackExpr should not reach code generation." );
700 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", pretty, genC ) << ")";
[afc1045]701 }
[70a06f6]702
[9857e8d]703 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]704 extension( logicalExpr );
[6c4ff37]705 output << "(";
[9857e8d]706 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]707 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]708 output << " && ";
[51587aa]709 } else {
[6c4ff37]710 output << " || ";
[51587aa]711 } // if
[9857e8d]712 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]713 output << ")";
[51587aa]714 }
[71f4e4f]715
[9857e8d]716 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]717 extension( conditionalExpr );
[6c4ff37]718 output << "(";
[9857e8d]719 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]720 output << " ? ";
[9857e8d]721 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]722 output << " : ";
[9857e8d]723 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]724 output << ")";
[51587aa]725 }
[71f4e4f]726
[9857e8d]727 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]728 extension( commaExpr );
[6c4ff37]729 output << "(";
[8a6cf7e]730 if ( genC ) {
731 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
732 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
733 }
[9857e8d]734 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]735 output << " , ";
[9857e8d]736 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]737 output << ")";
[51587aa]738 }
[71f4e4f]739
[9857e8d]740 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[d104b02]741 assertf( ! genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]742 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]743 }
744
[9857e8d]745 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[e39241b]746 assertf( ! genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]747 extension( tupleExpr );
[e39241b]748 output << "[";
749 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
750 output << "]";
751 }
[907eccb]752
[9857e8d]753 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[e39241b]754 assertf( ! genC, "TupleExpr should not reach code generation." );
[f975c65]755 extension( tupleExpr );
[e39241b]756 output << "[";
757 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
758 output << "]";
759 }
[71f4e4f]760
[9857e8d]761 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[f975c65]762 assertf( ! genC, "TupleIndexExpr should not reach code generation." );
763 extension( tupleExpr );
[9857e8d]764 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]765 output << "." << tupleExpr->get_index();
766 }
767
[9857e8d]768 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[e4d829b]769 // if ( genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
770 // assertf( ! genC, "TypeExpr should not reach code generation." );
771 if ( ! genC ) {
772 output<< genType( typeExpr->get_type(), "", pretty, genC );
773 }
[e39241b]774 }
[2b6c1e0]775
[9857e8d]776 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[7f5566b]777 if ( asmExpr->get_inout() ) {
778 output << "[ ";
[9857e8d]779 asmExpr->get_inout()->accept( *visitor );
[7f5566b]780 output << " ] ";
781 } // if
[9857e8d]782 asmExpr->get_constraint()->accept( *visitor );
[7f5566b]783 output << " ( ";
[9857e8d]784 asmExpr->get_operand()->accept( *visitor );
[7f5566b]785 output << " )";
786 }
787
[9857e8d]788 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]789 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[e39241b]790 output << "(" << genType( compLitExpr->get_result(), "", pretty, genC ) << ")";
[9857e8d]791 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]792 }
793
[9857e8d]794 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[d104b02]795 assertf( ! genC, "Unique expressions should not reach code generation." );
796 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]797 unqExpr->get_expr()->accept( *visitor );
[d104b02]798 output << " }";
799 }
800
[9857e8d]801 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]802 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]803 output << "({" << endl;
[f7cb0bc]804 ++indent;
[3c13c03]805 unsigned int numStmts = stmts.size();
806 unsigned int i = 0;
807 for ( Statement * stmt : stmts ) {
[058f549]808 output << indent << printLabels( stmt->get_labels() );
[3c13c03]809 if ( i+1 == numStmts ) {
810 // last statement in a statement expression needs to be handled specially -
811 // cannot cast to void, otherwise the expression statement has no value
812 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]813 exprStmt->expr->accept( *visitor );
[3c13c03]814 output << ";" << endl;
815 ++i;
816 break;
817 }
818 }
[9857e8d]819 stmt->accept( *visitor );
[3c13c03]820 output << endl;
821 if ( wantSpacing( stmt ) ) {
822 output << endl;
823 } // if
824 ++i;
825 }
[f7cb0bc]826 --indent;
[3c13c03]827 output << indent << "})";
[6eb8948]828 }
829
[4e8949f]830 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
831 assertf( ! genC, "Unique expressions should not reach code generation." );
832 expr->callExpr->accept( *visitor );
833 }
834
[44b4114]835 void CodeGenerator::postvisit( DeletedExpr * expr ) {
836 assertf( ! genC, "Deleted expressions should not reach code generation." );
837 expr->expr->accept( *visitor );
838 }
839
[0f79853]840 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
841 assertf( ! genC, "Default argument expressions should not reach code generation." );
842 arg->expr->accept( *visitor );
843 }
844
[d807ca28]845 void CodeGenerator::postvisit( GenericExpr * expr ) {
846 assertf( ! genC, "C11 _Generic expressions should not reach code generation." );
847 output << "_Generic(";
848 expr->control->accept( *visitor );
849 output << ", ";
850 unsigned int numAssocs = expr->associations.size();
851 unsigned int i = 0;
852 for ( GenericExpr::Association & assoc : expr->associations ) {
853 if (assoc.isDefault) {
854 output << "default: ";
855 } else {
856 output << genType( assoc.type, "", pretty, genC ) << ": ";
857 }
858 assoc.expr->accept( *visitor );
859 if ( i+1 != numAssocs ) {
860 output << ", ";
861 }
862 i++;
863 }
864 output << ")";
865 }
866
867
[4810867]868 // *** Statements
[9857e8d]869 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]870 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]871 output << "{" << endl;
[51587aa]872
[f7cb0bc]873 ++indent;
[51587aa]874
[7f5566b]875 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]876 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]877 (*i)->accept( *visitor );
[2b6c1e0]878
[6c4ff37]879 output << endl;
[2b6c1e0]880 if ( wantSpacing( *i ) ) {
881 output << endl;
[3778cb2]882 } // if
[8688ce1]883 } // for
[f7cb0bc]884 --indent;
[51587aa]885
[cda48b6]886 output << indent << "}";
[51587aa]887 }
888
[9857e8d]889 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]890 assert( exprStmt );
[262f085f]891 if ( genC ) {
892 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]893 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]894 }
[9857e8d]895 exprStmt->get_expr()->accept( *visitor );
[321a2481]896 output << ";";
[51587aa]897 }
898
[9857e8d]899 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]900 output << "asm ";
901 if ( asmStmt->get_voltile() ) output << "volatile ";
902 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
903 output << "( ";
[9857e8d]904 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]905 output << " : ";
906 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
907 output << " : ";
908 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
909 output << " : ";
910 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
911 if ( ! asmStmt->get_gotolabels().empty() ) {
912 output << " : ";
913 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
914 output << *begin++;
915 if ( begin == asmStmt->get_gotolabels().end() ) break;
916 output << ", ";
917 } // for
918 } // if
[d7312ac]919 output << " );";
[7f5566b]920 }
921
[9857e8d]922 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]923 output << "asm ";
924 AsmStmt * asmStmt = asmDecl->get_stmt();
925 output << "( ";
[9857e8d]926 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]927 output << " )";
[e994912]928 }
929
[cc32d83]930 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]931 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]932 }
933
[9857e8d]934 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]935 output << "if ( ";
[9857e8d]936 ifStmt->get_condition()->accept( *visitor );
[7f5566b]937 output << " ) ";
[51587aa]938
[9857e8d]939 ifStmt->get_thenPart()->accept( *visitor );
[51587aa]940
941 if ( ifStmt->get_elsePart() != 0) {
[2b6c1e0]942 output << " else ";
[9857e8d]943 ifStmt->get_elsePart()->accept( *visitor );
[51587aa]944 } // if
945 }
946
[9857e8d]947 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]948 output << "switch ( ";
[9857e8d]949 switchStmt->get_condition()->accept( *visitor );
[7f5566b]950 output << " ) ";
[71f4e4f]951
[d22e90f]952 output << "{" << endl;
[f7cb0bc]953 ++indent;
[9857e8d]954 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]955 --indent;
[cda48b6]956 output << indent << "}";
[51587aa]957 }
958
[9857e8d]959 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]960 updateLocation( caseStmt );
[1dcd9554]961 output << indent;
[eb3261f]962 if ( caseStmt->isDefault()) {
[2b6c1e0]963 output << "default";
[eb3261f]964 } else {
[2b6c1e0]965 output << "case ";
[9857e8d]966 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]967 } // if
[d22e90f]968 output << ":" << endl;
[71f4e4f]969
[51587aa]970 std::list<Statement *> sts = caseStmt->get_statements();
971
[f7cb0bc]972 ++indent;
[51587aa]973 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]974 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]975 (*i)->accept( *visitor );
[6c4ff37]976 output << endl;
[3778cb2]977 } // for
[f7cb0bc]978 --indent;
[51587aa]979 }
980
[9857e8d]981 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]982 switch ( branchStmt->get_type()) {
983 case BranchStmt::Goto:
984 if ( ! branchStmt->get_target().empty() )
[6c4ff37]985 output << "goto " << branchStmt->get_target();
[71f4e4f]986 else {
[51587aa]987 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]988 output << "goto *";
[9857e8d]989 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]990 } // if
991 } // if
992 break;
993 case BranchStmt::Break:
[6c4ff37]994 output << "break";
[51587aa]995 break;
996 case BranchStmt::Continue:
[6c4ff37]997 output << "continue";
[51587aa]998 break;
[7c2a7b6]999 case BranchStmt::FallThrough:
1000 case BranchStmt::FallThroughDefault:
1001 assertf( ! genC, "fallthru should not reach code generation." );
1002 output << "fallthru";
1003 break;
[3778cb2]1004 } // switch
[7c2a7b6]1005 // print branch target for labelled break/continue/fallthru in debug mode
1006 if ( ! genC && branchStmt->get_type() != BranchStmt::Goto ) {
1007 if ( ! branchStmt->get_target().empty() ) {
1008 output << " " << branchStmt->get_target();
1009 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1010 output << " default";
1011 }
1012 }
[2b6c1e0]1013 output << ";";
[51587aa]1014 }
1015
[9857e8d]1016 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1017 output << "return ";
[9857e8d]1018 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1019 output << ";";
[51587aa]1020 }
1021
[9857e8d]1022 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[daf1af8]1023 assertf( ! genC, "Throw statements should not reach code generation." );
1024
1025 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
1026 "throw" : "throwResume");
1027 if (throwStmt->get_expr()) {
1028 output << " ";
[9857e8d]1029 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1030 }
1031 if (throwStmt->get_target()) {
1032 output << " _At ";
[9857e8d]1033 throwStmt->get_target()->accept( *visitor );
[daf1af8]1034 }
1035 output << ";";
1036 }
[e4ea10b7]1037 void CodeGenerator::postvisit( CatchStmt * stmt ) {
1038 assertf( ! genC, "Catch statements should not reach code generation." );
1039
1040 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
1041 "catch" : "catchResume");
1042 output << "( ";
1043 stmt->decl->accept( *visitor );
1044 output << " ) ";
1045
1046 if( stmt->cond ) {
1047 output << "if/when(?) (";
1048 stmt->cond->accept( *visitor );
1049 output << ") ";
1050 }
1051 stmt->body->accept( *visitor );
1052 }
1053
1054 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
1055 assertf( ! genC, "Waitfor statements should not reach code generation." );
1056
1057 bool first = true;
1058 for( auto & clause : stmt->clauses ) {
1059 if(first) { output << "or "; first = false; }
1060 if( clause.condition ) {
1061 output << "when(";
1062 stmt->timeout.condition->accept( *visitor );
1063 output << ") ";
1064 }
1065 output << "waitfor(";
1066 clause.target.function->accept( *visitor );
1067 for( Expression * expr : clause.target.arguments ) {
1068 output << ",";
1069 expr->accept( *visitor );
1070 }
1071 output << ") ";
1072 clause.statement->accept( *visitor );
1073 }
1074
1075 if( stmt->timeout.statement ) {
1076 output << "or ";
1077 if( stmt->timeout.condition ) {
1078 output << "when(";
1079 stmt->timeout.condition->accept( *visitor );
1080 output << ") ";
1081 }
1082 output << "timeout(";
1083 stmt->timeout.time->accept( *visitor );
1084 output << ") ";
1085 stmt->timeout.statement->accept( *visitor );
1086 }
1087
1088 if( stmt->orelse.statement ) {
1089 output << "or ";
1090 if( stmt->orelse.condition ) {
1091 output << "when(";
1092 stmt->orelse.condition->accept( *visitor );
1093 output << ")";
1094 }
1095 output << "else ";
1096 stmt->orelse.statement->accept( *visitor );
1097 }
1098 }
1099
[55d6e8de]1100 void CodeGenerator::postvisit( WithStmt * with ) {
1101 if ( ! genC ) {
1102 output << "with ( ";
1103 genCommaList( with->exprs.begin(), with->exprs.end() );
1104 output << " ) ";
1105 }
1106 with->stmt->accept( *visitor );
1107 }
[daf1af8]1108
[9857e8d]1109 void CodeGenerator::postvisit( WhileStmt * whileStmt ) {
[321a2481]1110 if ( whileStmt->get_isDoWhile() ) {
[d7312ac]1111 output << "do";
[321a2481]1112 } else {
[d7312ac]1113 output << "while (";
[9857e8d]1114 whileStmt->get_condition()->accept( *visitor );
[6c4ff37]1115 output << ")";
[51587aa]1116 } // if
[2b6c1e0]1117 output << " ";
[51587aa]1118
[2b6c1e0]1119 output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() );
[9857e8d]1120 whileStmt->get_body()->accept( *visitor );
[51587aa]1121
[cda48b6]1122 output << indent;
[51587aa]1123
1124 if ( whileStmt->get_isDoWhile() ) {
[d7312ac]1125 output << " while (";
[9857e8d]1126 whileStmt->get_condition()->accept( *visitor );
[6c4ff37]1127 output << ");";
[51587aa]1128 } // if
1129 }
1130
[9857e8d]1131 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1132 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1133 output << "for (;";
[51587aa]1134
[321a2481]1135 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1136 forStmt->get_condition()->accept( *visitor );
[3778cb2]1137 } // if
[6c4ff37]1138 output << ";";
[51587aa]1139
[321a2481]1140 if ( forStmt->get_increment() != 0 ) {
1141 // cast the top-level expression to void to reduce gcc warnings.
1142 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1143 expr->accept( *visitor );
[3778cb2]1144 } // if
[2b6c1e0]1145 output << ") ";
[51587aa]1146
1147 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1148 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1149 forStmt->get_body()->accept( *visitor );
[51587aa]1150 } // if
1151 }
1152
[9857e8d]1153 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1154 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1155 output << "/* null statement */ ;";
[51587aa]1156 }
1157
[9857e8d]1158 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1159 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1160
[51587aa]1161 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1162 output << ";";
[51587aa]1163 } // if
1164 }
1165
[9857e8d]1166 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
1167 assertf( ! genC, "ImplicitCtorDtorStmts should not reach code generation." );
1168 stmt->callStmt->accept( *visitor );
1169 }
1170
[dd020c0]1171 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1172 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1173 decl->get_storageClasses().print( output );
[a7c90d4]1174 } // if
[dd020c0]1175 } // CodeGenerator::handleStorageClass
[9facf3b]1176
1177 std::string genName( DeclarationWithType * decl ) {
1178 CodeGen::OperatorInfo opInfo;
1179 if ( operatorLookup( decl->get_name(), opInfo ) ) {
1180 return opInfo.outputName;
1181 } else {
1182 return decl->get_name();
1183 } // if
1184 }
[51b73452]1185} // namespace CodeGen
[51587aa]1186
[50377a4]1187
1188unsigned Indenter::tabsize = 2;
1189
[e149f77]1190std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) {
1191 if ( node ) {
1192 node->print( out );
1193 } else {
1194 out << "nullptr";
1195 }
1196 return out;
1197}
1198
[51587aa]1199// Local Variables: //
1200// tab-width: 4 //
1201// mode: c++ //
1202// compile-command: "make install" //
1203// End: //
Note: See TracBrowser for help on using the repository browser.