source: src/CodeGen/CodeGenerator.cc@ 6f096d2

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 6f096d2 was 4e5e6cc, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Fixed indentation and remove too strict abort
  • Property mode set to 100644
File size: 37.1 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
[42a36d9]11// Last Modified By : Andrew Beach
[76f7fc7]12// Last Modified On : Thr May 2 10:47:00 2019
13// Update Count : 497
[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
[42a36d9]85 if ( !options.lineMarks || to.isUnset() ) return;
[d22e90f]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
[4e5e6cc]118 CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks, bool printExprTypes ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options( pretty, genC, lineMarks, printExprTypes ), endl( *this ) {}
119 CodeGenerator::CodeGenerator( std::ostream & os, const Options &options ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options(options), endl( *this ) {}
[cda48b6]120
[486341f]121 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]122 // GCC builtins should always be printed unmangled
[42a36d9]123 if ( options.pretty || decl->linkage.is_gcc_builtin ) return decl->name;
[13073be]124 if ( decl->mangleName != "" ) {
[f326f99]125 // need to incorporate scope level in order to differentiate names for destructors
126 return decl->get_scopedMangleName();
[51587aa]127 } else {
[13073be]128 return decl->name;
[51587aa]129 } // if
130 }
[94b4364]131
[44a81853]132 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
133 if ( attributes.empty() ) return;
134 output << "__attribute__ ((";
135 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]136 output << (*attr)->name;
137 if ( ! (*attr)->parameters.empty() ) {
[44a81853]138 output << "(";
[85b2300]139 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]140 output << ")";
141 } // if
142 if ( ++attr == attributes.end() ) break;
143 output << ","; // separator
144 } // for
145 output << ")) ";
146 } // CodeGenerator::genAttributes
[7baed7d]147
[9857e8d]148 // *** BaseSyntaxNode
[d22e90f]149 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]150 // turn off automatic recursion for all nodes, to allow each visitor to
151 // precisely control the order in which its children are visited.
152 visit_children = false;
[d22e90f]153 updateLocation( node );
[9857e8d]154 }
155
156 // *** BaseSyntaxNode
157 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
158 std::stringstream ss;
159 node->print( ss );
160 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
161 }
[7baed7d]162
[5f08961d]163 // *** Expression
164 void CodeGenerator::previsit( Expression * node ) {
165 previsit( (BaseSyntaxNode *)node );
166 GuardAction( [this, node](){
[42a36d9]167 if ( options.printExprTypes && node->result ) {
168 output << " /* " << genType( node->result, "", options ) << " */ ";
[5f08961d]169 }
170 } );
171 }
172
[4810867]173 // *** Declarations
[9857e8d]174 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]175 // deleted decls should never be used, so don't print them
[42a36d9]176 if ( functionDecl->isDeleted && options.genC ) return;
[8e9cbb2]177 extension( functionDecl );
[7baed7d]178 genAttributes( functionDecl->get_attributes() );
179
[51587aa]180 handleStorageClass( functionDecl );
[6e8bd43]181 functionDecl->get_funcSpec().print( output );
[dd020c0]182
[da09ba1]183 Options subOptions = options;
[76f7fc7]184 subOptions.anonymousUnused = functionDecl->has_body();
[da09ba1]185 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), subOptions );
[51587aa]186
[58dd019]187 asmName( functionDecl );
188
[51587aa]189 if ( functionDecl->get_statements() ) {
[9857e8d]190 functionDecl->get_statements()->accept( *visitor );
[51587aa]191 } // if
[3ed994e]192 if ( functionDecl->isDeleted ) {
193 output << " = void";
194 }
[51587aa]195 }
196
[9857e8d]197 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]198 // deleted decls should never be used, so don't print them
[42a36d9]199 if ( objectDecl->isDeleted && options.genC ) return;
200 if (objectDecl->get_name().empty() && options.genC ) {
[e39241b]201 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]202 static UniqueName name = { "__anonymous_object" };
203 objectDecl->set_name( name.newName() );
[da09ba1]204 // Stops unused parameter warnings.
[76f7fc7]205 if ( options.anonymousUnused ) {
[da09ba1]206 objectDecl->attributes.push_back( new Attribute( "unused" ) );
207 }
[d9c8a59]208 }
209
[8e9cbb2]210 extension( objectDecl );
[f9cebb5]211 genAttributes( objectDecl->get_attributes() );
212
[51587aa]213 handleStorageClass( objectDecl );
[42a36d9]214 output << genType( objectDecl->get_type(), mangleName( objectDecl ), options.pretty, options.genC );
[71f4e4f]215
[58dd019]216 asmName( objectDecl );
217
[51587aa]218 if ( objectDecl->get_init() ) {
[6c4ff37]219 output << " = ";
[9857e8d]220 objectDecl->get_init()->accept( *visitor );
[51587aa]221 } // if
[3ed994e]222 if ( objectDecl->isDeleted ) {
223 output << " = void";
224 }
[3778cb2]225
[51587aa]226 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]227 output << ":";
[9857e8d]228 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]229 } // if
230 }
231
[5f642e38]232 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[42a36d9]233 if( ! aggDecl->parameters.empty() && ! options.genC ) {
[e39241b]234 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
235 output << "forall(";
[0b3b2ae]236 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]237 output << ")" << endl;
[e6cee92]238 output << indent;
[e39241b]239 }
240
[593370c]241 output << kind;
[0b3b2ae]242 genAttributes( aggDecl->attributes );
243 output << aggDecl->name;
[71f4e4f]244
[2c57025]245 if ( aggDecl->has_body() ) {
[0b3b2ae]246 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]247 output << " {" << endl;
[51587aa]248
[f7cb0bc]249 ++indent;
[3778cb2]250 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]251 output << indent;
[9857e8d]252 (*i)->accept( *visitor );
[6c4ff37]253 output << ";" << endl;
[3778cb2]254 } // for
[51587aa]255
[f7cb0bc]256 --indent;
[51587aa]257
[cda48b6]258 output << indent << "}";
[17cd4eb]259 } // if
[51587aa]260 }
[17cd4eb]261
[9857e8d]262 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]263 extension( structDecl );
[5f642e38]264 handleAggregate( structDecl, "struct " );
[51587aa]265 }
[17cd4eb]266
[9857e8d]267 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]268 extension( unionDecl );
[5f642e38]269 handleAggregate( unionDecl, "union " );
[51587aa]270 }
[71f4e4f]271
[9857e8d]272 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]273 extension( enumDecl );
[6c4ff37]274 output << "enum ";
[c0aa336]275 genAttributes( enumDecl->get_attributes() );
[51587aa]276
[a984e65]277 output << enumDecl->get_name();
[71f4e4f]278
[8e9cbb2]279 std::list< Declaration* > &memb = enumDecl->get_members();
[51587aa]280
281 if ( ! memb.empty() ) {
[cda48b6]282 output << " {" << endl;
[51587aa]283
[f7cb0bc]284 ++indent;
[51587aa]285 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]286 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]287 assert( obj );
[87e08e24]288 output << indent << mangleName( obj );
[51587aa]289 if ( obj->get_init() ) {
[6c4ff37]290 output << " = ";
[9857e8d]291 obj->get_init()->accept( *visitor );
[51587aa]292 } // if
[6c4ff37]293 output << "," << endl;
[51587aa]294 } // for
295
[f7cb0bc]296 --indent;
[51587aa]297
[cda48b6]298 output << indent << "}";
[51587aa]299 } // if
300 }
[71f4e4f]301
[9857e8d]302 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]303 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]304 extension( traitDecl );
305 handleAggregate( traitDecl, "trait " );
306 }
[71f4e4f]307
[9857e8d]308 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]309 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]310 output << "typedef ";
[42a36d9]311 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]312 }
[71f4e4f]313
[9857e8d]314 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]315 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]316 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]317 if ( typeDecl->sized ) {
[ab4bff5]318 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]319 }
[ab4bff5]320 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]321 output << " | { ";
[ab4bff5]322 for ( DeclarationWithType * assert : typeDecl->assertions ) {
323 assert->accept( *visitor );
324 output << "; ";
325 }
[a0c7dc36]326 output << " }";
[e39241b]327 }
[51587aa]328 }
329
[92fea32]330 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
331 output << "_Static_assert(";
332 assertDecl->condition->accept( *visitor );
333 output << ", ";
334 assertDecl->message->accept( *visitor );
335 output << ")";
336 }
337
[9857e8d]338 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]339 std::list< Expression * > designators = designation->get_designators();
[e45215c]340 if ( designators.size() == 0 ) return;
[e4d829b]341 for ( Expression * des : designators ) {
[62423350]342 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
343 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
344 output << ".";
[9857e8d]345 des->accept( *visitor );
[e4d829b]346 } else {
[62423350]347 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array eleemnt
348 output << "[";
[9857e8d]349 des->accept( *visitor );
[62423350]350 output << "]";
[3778cb2]351 } // if
352 } // for
[e45215c]353 output << " = ";
354 }
355
[9857e8d]356 void CodeGenerator::postvisit( SingleInit * init ) {
357 init->get_value()->accept( *visitor );
[51587aa]358 }
359
[9857e8d]360 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]361 auto initBegin = init->begin();
362 auto initEnd = init->end();
363 auto desigBegin = init->get_designations().begin();
364 auto desigEnd = init->get_designations().end();
365
[6c4ff37]366 output << "{ ";
[e4d829b]367 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]368 (*desigBegin)->accept( *visitor );
369 (*initBegin)->accept( *visitor );
[e4d829b]370 ++initBegin, ++desigBegin;
371 if ( initBegin != initEnd ) {
372 output << ", ";
373 }
374 }
[6c4ff37]375 output << " }";
[e4d829b]376 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]377 }
378
[d22e90f]379 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]380 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]381 // pseudo-output for constructor/destructor pairs
[d22e90f]382 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]383 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]384 output << ", " << endl << indent << "dtor: ";
[9857e8d]385 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]386 output << endl << --indent << "}";
[fc638d2]387 }
388
[9857e8d]389 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]390 output << constant->get_value();
[51587aa]391 }
392
[4810867]393 // *** Expressions
[9857e8d]394 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]395 extension( applicationExpr );
[8688ce1]396 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[51587aa]397 OperatorInfo opInfo;
398 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) {
399 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
400 switch ( opInfo.type ) {
401 case OT_INDEX:
402 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]403 (*arg++)->accept( *visitor );
[6c4ff37]404 output << "[";
[9857e8d]405 (*arg)->accept( *visitor );
[6c4ff37]406 output << "]";
[51587aa]407 break;
[71f4e4f]408
[51587aa]409 case OT_CALL:
[356189a]410 // there are no intrinsic definitions of the function call operator
[51587aa]411 assert( false );
412 break;
[71f4e4f]413
[f1e012b]414 case OT_CTOR:
[c2ce2350]415 case OT_DTOR:
[356189a]416 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]417 // the expression fed into a single parameter constructor or destructor may contain side
418 // effects, so must still output this expression
[64071c2]419 output << "(";
[9857e8d]420 (*arg++)->accept( *visitor );
[64071c2]421 output << ") /* " << opInfo.inputName << " */";
[356189a]422 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]423 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]424 output << "(";
[9857e8d]425 (*arg++)->accept( *visitor );
[356189a]426 output << opInfo.symbol;
[9857e8d]427 (*arg)->accept( *visitor );
[c2ce2350]428 output << ") /* " << opInfo.inputName << " */";
[356189a]429 } else {
[c2ce2350]430 // no constructors with 0 or more than 2 parameters
[356189a]431 assert( false );
[8688ce1]432 } // if
[356189a]433 break;
[f1e012b]434
[51587aa]435 case OT_PREFIX:
436 case OT_PREFIXASSIGN:
437 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]438 output << "(";
439 output << opInfo.symbol;
[9857e8d]440 (*arg)->accept( *visitor );
[6c4ff37]441 output << ")";
[51587aa]442 break;
[71f4e4f]443
[51587aa]444 case OT_POSTFIX:
445 case OT_POSTFIXASSIGN:
446 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]447 (*arg)->accept( *visitor );
[6c4ff37]448 output << opInfo.symbol;
[51587aa]449 break;
450
[f1e012b]451
[51587aa]452 case OT_INFIX:
453 case OT_INFIXASSIGN:
454 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]455 output << "(";
[9857e8d]456 (*arg++)->accept( *visitor );
[6c4ff37]457 output << opInfo.symbol;
[9857e8d]458 (*arg)->accept( *visitor );
[6c4ff37]459 output << ")";
[51587aa]460 break;
[71f4e4f]461
[51587aa]462 case OT_CONSTANT:
[721f17a]463 case OT_LABELADDRESS:
464 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]465 assert( false );
[3778cb2]466 } // switch
[17cd4eb]467 } else {
[9857e8d]468 varExpr->accept( *visitor );
[6c4ff37]469 output << "(";
[51587aa]470 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]471 output << ")";
[17cd4eb]472 } // if
[51587aa]473 } else {
[9857e8d]474 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]475 output << "(";
[51587aa]476 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]477 output << ")";
[51587aa]478 } // if
479 }
[71f4e4f]480
[9857e8d]481 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]482 extension( untypedExpr );
[22bc276]483 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[51587aa]484 OperatorInfo opInfo;
[22bc276]485 if ( operatorLookup( nameExpr->name, opInfo ) ) {
486 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[51587aa]487 switch ( opInfo.type ) {
488 case OT_INDEX:
[22bc276]489 assert( untypedExpr->args.size() == 2 );
[9857e8d]490 (*arg++)->accept( *visitor );
[6c4ff37]491 output << "[";
[9857e8d]492 (*arg)->accept( *visitor );
[6c4ff37]493 output << "]";
[51587aa]494 break;
[71f4e4f]495
[51587aa]496 case OT_CALL:
[f1e012b]497 assert( false );
498
[c2ce2350]499 case OT_CTOR:
500 case OT_DTOR:
[22bc276]501 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]502 // the expression fed into a single parameter constructor or destructor may contain side
503 // effects, so must still output this expression
[64071c2]504 output << "(";
[9857e8d]505 (*arg++)->accept( *visitor );
[64071c2]506 output << ") /* " << opInfo.inputName << " */";
[c2ce2350]507 } else if ( untypedExpr->get_args().size() == 2 ) {
508 // intrinsic two parameter constructors are essentially bitwise assignment
509 output << "(";
[9857e8d]510 (*arg++)->accept( *visitor );
[c2ce2350]511 output << opInfo.symbol;
[9857e8d]512 (*arg)->accept( *visitor );
[c2ce2350]513 output << ") /* " << opInfo.inputName << " */";
514 } else {
515 // no constructors with 0 or more than 2 parameters
[42a36d9]516 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]517 output << "(";
518 (*arg++)->accept( *visitor );
519 output << opInfo.symbol << "{ ";
[22bc276]520 genCommaList( arg, untypedExpr->args.end() );
[4e8949f]521 output << "}) /* " << opInfo.inputName << " */";
[3778cb2]522 } // if
[51587aa]523 break;
[71f4e4f]524
[51587aa]525 case OT_PREFIX:
526 case OT_PREFIXASSIGN:
[de62360d]527 case OT_LABELADDRESS:
[22bc276]528 assert( untypedExpr->args.size() == 1 );
[6c4ff37]529 output << "(";
530 output << opInfo.symbol;
[9857e8d]531 (*arg)->accept( *visitor );
[6c4ff37]532 output << ")";
[51587aa]533 break;
[71f4e4f]534
[51587aa]535 case OT_POSTFIX:
536 case OT_POSTFIXASSIGN:
[22bc276]537 assert( untypedExpr->args.size() == 1 );
[9857e8d]538 (*arg)->accept( *visitor );
[6c4ff37]539 output << opInfo.symbol;
[51587aa]540 break;
[71f4e4f]541
[51587aa]542 case OT_INFIX:
543 case OT_INFIXASSIGN:
[22bc276]544 assert( untypedExpr->args.size() == 2 );
[6c4ff37]545 output << "(";
[9857e8d]546 (*arg++)->accept( *visitor );
[6c4ff37]547 output << opInfo.symbol;
[9857e8d]548 (*arg)->accept( *visitor );
[6c4ff37]549 output << ")";
[51587aa]550 break;
[71f4e4f]551
[51587aa]552 case OT_CONSTANT:
553 // there are no intrinsic definitions of 0 or 1 as functions
554 assert( false );
[3778cb2]555 } // switch
[51587aa]556 } else {
[22bc276]557 // builtin routines
558 nameExpr->accept( *visitor );
559 output << "(";
560 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
561 output << ")";
[51587aa]562 } // if
563 } else {
[22bc276]564 untypedExpr->function->accept( *visitor );
[6c4ff37]565 output << "(";
[22bc276]566 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]567 output << ")";
[51587aa]568 } // if
569 }
[71f4e4f]570
[9857e8d]571 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]572 rangeExpr->low->accept( *visitor );
[064e3ff]573 output << " ... ";
[22bc276]574 rangeExpr->high->accept( *visitor );
[064e3ff]575 }
576
[9857e8d]577 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]578 extension( nameExpr );
[51587aa]579 OperatorInfo opInfo;
[5ea7a22]580 if ( operatorLookup( nameExpr->name, opInfo ) ) {
581 if ( opInfo.type == OT_CONSTANT ) {
582 output << opInfo.symbol;
583 } else {
584 output << opInfo.outputName;
585 }
[51587aa]586 } else {
[6c4ff37]587 output << nameExpr->get_name();
[51587aa]588 } // if
589 }
[71f4e4f]590
[9857e8d]591 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]592 extension( addressExpr );
[6c4ff37]593 output << "(&";
[9857e8d]594 addressExpr->arg->accept( *visitor );
[6c4ff37]595 output << ")";
[51587aa]596 }
597
[9857e8d]598 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]599 extension( addressExpr );
600 output << "(&&" << addressExpr->arg << ")";
601 }
602
[9857e8d]603 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]604 extension( castExpr );
[803deb1]605 output << "(";
[906e24d]606 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]607 output << "(void)";
[d104b02]608 } else {
609 // at least one result type of cast.
610 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
611 // an lvalue cast, this has been taken out.
[803deb1]612 output << "(";
[42a36d9]613 output << genType( castExpr->get_result(), "", options );
[71f4e4f]614 output << ")";
[3778cb2]615 } // if
[da9d79b]616 castExpr->arg->accept( *visitor );
617 output << ")";
618 }
619
620 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]621 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]622 extension( castExpr );
623 output << "((" << castExpr->targetString() << " &)";
624 castExpr->arg->accept( *visitor );
[803deb1]625 output << ")";
[51587aa]626 }
[71f4e4f]627
[9857e8d]628 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]629 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]630 extension( castExpr );
631 output << "(virtual ";
[9857e8d]632 castExpr->get_arg()->accept( *visitor );
[a5f0529]633 output << ")";
634 }
635
[9857e8d]636 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]637 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]638 extension( memberExpr );
[9857e8d]639 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]640 output << ".";
[9857e8d]641 memberExpr->get_member()->accept( *visitor );
[51587aa]642 }
[71f4e4f]643
[9857e8d]644 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]645 extension( memberExpr );
[9857e8d]646 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]647 output << "." << mangleName( memberExpr->get_member() );
[51587aa]648 }
[71f4e4f]649
[9857e8d]650 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]651 extension( variableExpr );
[51587aa]652 OperatorInfo opInfo;
653 if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) {
[6c4ff37]654 output << opInfo.symbol;
[51587aa]655 } else {
[6c4ff37]656 output << mangleName( variableExpr->get_var() );
[51587aa]657 } // if
658 }
[71f4e4f]659
[9857e8d]660 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]661 assert( constantExpr->get_constant() );
[e04ef3a]662 extension( constantExpr );
[9857e8d]663 constantExpr->get_constant()->accept( *visitor );
[51587aa]664 }
[71f4e4f]665
[9857e8d]666 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]667 extension( sizeofExpr );
[6c4ff37]668 output << "sizeof(";
[51587aa]669 if ( sizeofExpr->get_isType() ) {
[42a36d9]670 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]671 } else {
[9857e8d]672 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]673 } // if
[6c4ff37]674 output << ")";
[51587aa]675 }
[47534159]676
[9857e8d]677 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]678 // use GCC extension to avoid bumping std to C11
[8e9cbb2]679 extension( alignofExpr );
[47534159]680 output << "__alignof__(";
[25a054f]681 if ( alignofExpr->get_isType() ) {
[42a36d9]682 output << genType( alignofExpr->get_type(), "", options );
[47534159]683 } else {
[9857e8d]684 alignofExpr->get_expr()->accept( *visitor );
[47534159]685 } // if
686 output << ")";
687 }
[71f4e4f]688
[9857e8d]689 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]690 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]691 output << "offsetof(";
[42a36d9]692 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]693 output << ", " << offsetofExpr->get_member();
694 output << ")";
[2a4b088]695 }
696
[9857e8d]697 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]698 // use GCC builtin
699 output << "__builtin_offsetof(";
[42a36d9]700 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]701 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]702 output << ")";
703 }
[d63eeb0]704
[9857e8d]705 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]706 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
707 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]708 }
[70a06f6]709
[9857e8d]710 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]711 extension( logicalExpr );
[6c4ff37]712 output << "(";
[9857e8d]713 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]714 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]715 output << " && ";
[51587aa]716 } else {
[6c4ff37]717 output << " || ";
[51587aa]718 } // if
[9857e8d]719 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]720 output << ")";
[51587aa]721 }
[71f4e4f]722
[9857e8d]723 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]724 extension( conditionalExpr );
[6c4ff37]725 output << "(";
[9857e8d]726 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]727 output << " ? ";
[9857e8d]728 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]729 output << " : ";
[9857e8d]730 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]731 output << ")";
[51587aa]732 }
[71f4e4f]733
[9857e8d]734 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]735 extension( commaExpr );
[6c4ff37]736 output << "(";
[42a36d9]737 if ( options.genC ) {
[8a6cf7e]738 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
739 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
740 }
[9857e8d]741 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]742 output << " , ";
[9857e8d]743 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]744 output << ")";
[51587aa]745 }
[71f4e4f]746
[9857e8d]747 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]748 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]749 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]750 }
751
[9857e8d]752 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]753 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]754 extension( tupleExpr );
[e39241b]755 output << "[";
756 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
757 output << "]";
758 }
[907eccb]759
[9857e8d]760 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]761 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]762 extension( tupleExpr );
[e39241b]763 output << "[";
764 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
765 output << "]";
766 }
[71f4e4f]767
[9857e8d]768 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]769 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]770 extension( tupleExpr );
[9857e8d]771 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]772 output << "." << tupleExpr->get_index();
773 }
774
[9857e8d]775 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]776 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
777 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
778 if ( ! options.genC ) {
779 output << genType( typeExpr->get_type(), "", options );
[e4d829b]780 }
[e39241b]781 }
[2b6c1e0]782
[9857e8d]783 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[7f5566b]784 if ( asmExpr->get_inout() ) {
785 output << "[ ";
[9857e8d]786 asmExpr->get_inout()->accept( *visitor );
[7f5566b]787 output << " ] ";
788 } // if
[9857e8d]789 asmExpr->get_constraint()->accept( *visitor );
[7f5566b]790 output << " ( ";
[9857e8d]791 asmExpr->get_operand()->accept( *visitor );
[7f5566b]792 output << " )";
793 }
794
[9857e8d]795 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]796 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]797 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]798 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]799 }
800
[9857e8d]801 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]802 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]803 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]804 unqExpr->get_expr()->accept( *visitor );
[d104b02]805 output << " }";
806 }
807
[9857e8d]808 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]809 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]810 output << "({" << endl;
[f7cb0bc]811 ++indent;
[3c13c03]812 unsigned int numStmts = stmts.size();
813 unsigned int i = 0;
814 for ( Statement * stmt : stmts ) {
[058f549]815 output << indent << printLabels( stmt->get_labels() );
[3c13c03]816 if ( i+1 == numStmts ) {
817 // last statement in a statement expression needs to be handled specially -
818 // cannot cast to void, otherwise the expression statement has no value
819 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]820 exprStmt->expr->accept( *visitor );
[3c13c03]821 output << ";" << endl;
822 ++i;
823 break;
824 }
825 }
[9857e8d]826 stmt->accept( *visitor );
[3c13c03]827 output << endl;
828 if ( wantSpacing( stmt ) ) {
829 output << endl;
830 } // if
831 ++i;
832 }
[f7cb0bc]833 --indent;
[3c13c03]834 output << indent << "})";
[6eb8948]835 }
836
[4e8949f]837 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]838 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]839 expr->callExpr->accept( *visitor );
840 }
841
[44b4114]842 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]843 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]844 expr->expr->accept( *visitor );
845 }
846
[0f79853]847 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]848 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]849 arg->expr->accept( *visitor );
850 }
851
[d807ca28]852 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]853 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]854 output << "_Generic(";
855 expr->control->accept( *visitor );
856 output << ", ";
857 unsigned int numAssocs = expr->associations.size();
858 unsigned int i = 0;
859 for ( GenericExpr::Association & assoc : expr->associations ) {
860 if (assoc.isDefault) {
861 output << "default: ";
862 } else {
[42a36d9]863 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]864 }
865 assoc.expr->accept( *visitor );
866 if ( i+1 != numAssocs ) {
867 output << ", ";
868 }
869 i++;
870 }
871 output << ")";
872 }
873
874
[4810867]875 // *** Statements
[9857e8d]876 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]877 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]878 output << "{" << endl;
[51587aa]879
[f7cb0bc]880 ++indent;
[51587aa]881
[7f5566b]882 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]883 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]884 (*i)->accept( *visitor );
[2b6c1e0]885
[6c4ff37]886 output << endl;
[2b6c1e0]887 if ( wantSpacing( *i ) ) {
888 output << endl;
[3778cb2]889 } // if
[8688ce1]890 } // for
[f7cb0bc]891 --indent;
[51587aa]892
[cda48b6]893 output << indent << "}";
[51587aa]894 }
895
[9857e8d]896 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]897 assert( exprStmt );
[42a36d9]898 if ( options.genC ) {
[262f085f]899 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]900 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]901 }
[9857e8d]902 exprStmt->get_expr()->accept( *visitor );
[321a2481]903 output << ";";
[51587aa]904 }
905
[9857e8d]906 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]907 output << "asm ";
908 if ( asmStmt->get_voltile() ) output << "volatile ";
909 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
910 output << "( ";
[9857e8d]911 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]912 output << " : ";
913 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
914 output << " : ";
915 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
916 output << " : ";
917 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
918 if ( ! asmStmt->get_gotolabels().empty() ) {
919 output << " : ";
920 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
921 output << *begin++;
922 if ( begin == asmStmt->get_gotolabels().end() ) break;
923 output << ", ";
924 } // for
925 } // if
[d7312ac]926 output << " );";
[7f5566b]927 }
928
[9857e8d]929 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]930 output << "asm ";
931 AsmStmt * asmStmt = asmDecl->get_stmt();
932 output << "( ";
[9857e8d]933 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]934 output << " )";
[e994912]935 }
936
[cc32d83]937 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]938 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]939 }
940
[9857e8d]941 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]942 output << "if ( ";
[9857e8d]943 ifStmt->get_condition()->accept( *visitor );
[7f5566b]944 output << " ) ";
[51587aa]945
[9857e8d]946 ifStmt->get_thenPart()->accept( *visitor );
[51587aa]947
948 if ( ifStmt->get_elsePart() != 0) {
[2b6c1e0]949 output << " else ";
[9857e8d]950 ifStmt->get_elsePart()->accept( *visitor );
[51587aa]951 } // if
952 }
953
[9857e8d]954 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]955 output << "switch ( ";
[9857e8d]956 switchStmt->get_condition()->accept( *visitor );
[7f5566b]957 output << " ) ";
[71f4e4f]958
[d22e90f]959 output << "{" << endl;
[f7cb0bc]960 ++indent;
[9857e8d]961 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]962 --indent;
[cda48b6]963 output << indent << "}";
[51587aa]964 }
965
[9857e8d]966 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]967 updateLocation( caseStmt );
[1dcd9554]968 output << indent;
[eb3261f]969 if ( caseStmt->isDefault()) {
[2b6c1e0]970 output << "default";
[eb3261f]971 } else {
[2b6c1e0]972 output << "case ";
[9857e8d]973 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]974 } // if
[d22e90f]975 output << ":" << endl;
[71f4e4f]976
[51587aa]977 std::list<Statement *> sts = caseStmt->get_statements();
978
[f7cb0bc]979 ++indent;
[51587aa]980 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]981 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]982 (*i)->accept( *visitor );
[6c4ff37]983 output << endl;
[3778cb2]984 } // for
[f7cb0bc]985 --indent;
[51587aa]986 }
987
[9857e8d]988 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]989 switch ( branchStmt->get_type()) {
990 case BranchStmt::Goto:
991 if ( ! branchStmt->get_target().empty() )
[6c4ff37]992 output << "goto " << branchStmt->get_target();
[71f4e4f]993 else {
[51587aa]994 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]995 output << "goto *";
[9857e8d]996 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]997 } // if
998 } // if
999 break;
1000 case BranchStmt::Break:
[6c4ff37]1001 output << "break";
[51587aa]1002 break;
1003 case BranchStmt::Continue:
[6c4ff37]1004 output << "continue";
[51587aa]1005 break;
[7c2a7b6]1006 case BranchStmt::FallThrough:
1007 case BranchStmt::FallThroughDefault:
[42a36d9]1008 assertf( ! options.genC, "fallthru should not reach code generation." );
[7c2a7b6]1009 output << "fallthru";
1010 break;
[3778cb2]1011 } // switch
[7c2a7b6]1012 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1013 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1014 if ( ! branchStmt->get_target().empty() ) {
1015 output << " " << branchStmt->get_target();
1016 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1017 output << " default";
1018 }
1019 }
[2b6c1e0]1020 output << ";";
[51587aa]1021 }
1022
[9857e8d]1023 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1024 output << "return ";
[9857e8d]1025 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1026 output << ";";
[51587aa]1027 }
1028
[9857e8d]1029 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1030 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1031
1032 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
1033 "throw" : "throwResume");
1034 if (throwStmt->get_expr()) {
1035 output << " ";
[9857e8d]1036 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1037 }
1038 if (throwStmt->get_target()) {
1039 output << " _At ";
[9857e8d]1040 throwStmt->get_target()->accept( *visitor );
[daf1af8]1041 }
1042 output << ";";
1043 }
[e4ea10b7]1044 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1045 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1046
1047 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
1048 "catch" : "catchResume");
1049 output << "( ";
1050 stmt->decl->accept( *visitor );
1051 output << " ) ";
1052
1053 if( stmt->cond ) {
1054 output << "if/when(?) (";
1055 stmt->cond->accept( *visitor );
1056 output << ") ";
1057 }
1058 stmt->body->accept( *visitor );
1059 }
1060
1061 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1062 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1063
1064 bool first = true;
1065 for( auto & clause : stmt->clauses ) {
1066 if(first) { output << "or "; first = false; }
1067 if( clause.condition ) {
1068 output << "when(";
1069 stmt->timeout.condition->accept( *visitor );
1070 output << ") ";
1071 }
1072 output << "waitfor(";
1073 clause.target.function->accept( *visitor );
1074 for( Expression * expr : clause.target.arguments ) {
1075 output << ",";
1076 expr->accept( *visitor );
1077 }
1078 output << ") ";
1079 clause.statement->accept( *visitor );
1080 }
1081
1082 if( stmt->timeout.statement ) {
1083 output << "or ";
1084 if( stmt->timeout.condition ) {
1085 output << "when(";
1086 stmt->timeout.condition->accept( *visitor );
1087 output << ") ";
1088 }
1089 output << "timeout(";
1090 stmt->timeout.time->accept( *visitor );
1091 output << ") ";
1092 stmt->timeout.statement->accept( *visitor );
1093 }
1094
1095 if( stmt->orelse.statement ) {
1096 output << "or ";
1097 if( stmt->orelse.condition ) {
1098 output << "when(";
1099 stmt->orelse.condition->accept( *visitor );
1100 output << ")";
1101 }
1102 output << "else ";
1103 stmt->orelse.statement->accept( *visitor );
1104 }
1105 }
1106
[55d6e8de]1107 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1108 if ( ! options.genC ) {
[55d6e8de]1109 output << "with ( ";
1110 genCommaList( with->exprs.begin(), with->exprs.end() );
1111 output << " ) ";
1112 }
1113 with->stmt->accept( *visitor );
1114 }
[daf1af8]1115
[9857e8d]1116 void CodeGenerator::postvisit( WhileStmt * whileStmt ) {
[321a2481]1117 if ( whileStmt->get_isDoWhile() ) {
[d7312ac]1118 output << "do";
[321a2481]1119 } else {
[d7312ac]1120 output << "while (";
[9857e8d]1121 whileStmt->get_condition()->accept( *visitor );
[6c4ff37]1122 output << ")";
[51587aa]1123 } // if
[2b6c1e0]1124 output << " ";
[51587aa]1125
[2b6c1e0]1126 output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() );
[9857e8d]1127 whileStmt->get_body()->accept( *visitor );
[51587aa]1128
[cda48b6]1129 output << indent;
[51587aa]1130
1131 if ( whileStmt->get_isDoWhile() ) {
[d7312ac]1132 output << " while (";
[9857e8d]1133 whileStmt->get_condition()->accept( *visitor );
[6c4ff37]1134 output << ");";
[51587aa]1135 } // if
1136 }
1137
[9857e8d]1138 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1139 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1140 output << "for (;";
[51587aa]1141
[321a2481]1142 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1143 forStmt->get_condition()->accept( *visitor );
[3778cb2]1144 } // if
[6c4ff37]1145 output << ";";
[51587aa]1146
[321a2481]1147 if ( forStmt->get_increment() != 0 ) {
1148 // cast the top-level expression to void to reduce gcc warnings.
1149 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1150 expr->accept( *visitor );
[3778cb2]1151 } // if
[2b6c1e0]1152 output << ") ";
[51587aa]1153
1154 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1155 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1156 forStmt->get_body()->accept( *visitor );
[51587aa]1157 } // if
1158 }
1159
[9857e8d]1160 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1161 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1162 output << "/* null statement */ ;";
[51587aa]1163 }
1164
[9857e8d]1165 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1166 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1167
[51587aa]1168 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1169 output << ";";
[51587aa]1170 } // if
1171 }
1172
[9857e8d]1173 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1174 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1175 stmt->callStmt->accept( *visitor );
1176 }
1177
[dd020c0]1178 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1179 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1180 decl->get_storageClasses().print( output );
[a7c90d4]1181 } // if
[dd020c0]1182 } // CodeGenerator::handleStorageClass
[9facf3b]1183
1184 std::string genName( DeclarationWithType * decl ) {
1185 CodeGen::OperatorInfo opInfo;
1186 if ( operatorLookup( decl->get_name(), opInfo ) ) {
1187 return opInfo.outputName;
1188 } else {
1189 return decl->get_name();
1190 } // if
1191 }
[51b73452]1192} // namespace CodeGen
[51587aa]1193
[50377a4]1194
1195unsigned Indenter::tabsize = 2;
1196
[e149f77]1197std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) {
1198 if ( node ) {
1199 node->print( out );
1200 } else {
1201 out << "nullptr";
1202 }
1203 return out;
1204}
1205
[51587aa]1206// Local Variables: //
1207// tab-width: 4 //
1208// mode: c++ //
1209// compile-command: "make install" //
1210// End: //
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