source: src/CodeGen/CodeGenerator.cc@ 3265399

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum with_gc
Last change on this file since 3265399 was 593370c, checked in by Rob Schluntz <rschlunt@…>, 7 years ago

Modify codgen to put struct/union attributes in the correct position
  • Property mode set to 100644
File size: 34.6 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
12// Last Modified On : Sun Sep 3 20:42:52 2017
13// Update Count : 490
[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
[d22e90f]118 CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks ) : indent( CodeGenerator::tabsize ), output( os ), printLabels( *this ), pretty( pretty ), genC( genC ), lineMarks( lineMarks ), endl( *this ) {}
[cda48b6]119
[486341f]120 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[35b1bf4]121 if ( pretty ) return decl->get_name();
[51587aa]122 if ( decl->get_mangleName() != "" ) {
[f326f99]123 // need to incorporate scope level in order to differentiate names for destructors
124 return decl->get_scopedMangleName();
[51587aa]125 } else {
126 return decl->get_name();
127 } // if
128 }
[94b4364]129
[44a81853]130 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
131 if ( attributes.empty() ) return;
132 output << "__attribute__ ((";
133 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
134 output << (*attr)->get_name();
135 if ( ! (*attr)->get_parameters().empty() ) {
136 output << "(";
137 genCommaList( (*attr)->get_parameters().begin(), (*attr)->get_parameters().end() );
138 output << ")";
139 } // if
140 if ( ++attr == attributes.end() ) break;
141 output << ","; // separator
142 } // for
143 output << ")) ";
144 } // CodeGenerator::genAttributes
[7baed7d]145
[9857e8d]146 // *** BaseSyntaxNode
[d22e90f]147 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]148 // turn off automatic recursion for all nodes, to allow each visitor to
149 // precisely control the order in which its children are visited.
150 visit_children = false;
[d22e90f]151 updateLocation( node );
[9857e8d]152 }
153
154 // *** BaseSyntaxNode
155 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
156 std::stringstream ss;
157 node->print( ss );
158 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
159 }
[7baed7d]160
[4810867]161 // *** Declarations
[9857e8d]162 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[8e9cbb2]163 extension( functionDecl );
[7baed7d]164 genAttributes( functionDecl->get_attributes() );
165
[51587aa]166 handleStorageClass( functionDecl );
[6e8bd43]167 functionDecl->get_funcSpec().print( output );
[dd020c0]168
[e39241b]169 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), pretty, genC );
[51587aa]170
[58dd019]171 asmName( functionDecl );
172
[51587aa]173 if ( functionDecl->get_statements() ) {
[9857e8d]174 functionDecl->get_statements()->accept( *visitor );
[51587aa]175 } // if
176 }
177
[9857e8d]178 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[e39241b]179 if (objectDecl->get_name().empty() && genC ) {
180 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]181 static UniqueName name = { "__anonymous_object" };
182 objectDecl->set_name( name.newName() );
183 }
184
[8e9cbb2]185 extension( objectDecl );
[f9cebb5]186 genAttributes( objectDecl->get_attributes() );
187
[51587aa]188 handleStorageClass( objectDecl );
[e39241b]189 output << genType( objectDecl->get_type(), mangleName( objectDecl ), pretty, genC );
[71f4e4f]190
[58dd019]191 asmName( objectDecl );
192
[51587aa]193 if ( objectDecl->get_init() ) {
[6c4ff37]194 output << " = ";
[9857e8d]195 objectDecl->get_init()->accept( *visitor );
[51587aa]196 } // if
[3778cb2]197
[51587aa]198 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]199 output << ":";
[9857e8d]200 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]201 } // if
202 }
203
[5f642e38]204 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[e39241b]205 if( ! aggDecl->get_parameters().empty() && ! genC ) {
206 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
207 output << "forall(";
208 genCommaList( aggDecl->get_parameters().begin(), aggDecl->get_parameters().end() );
209 output << ")" << endl;
[e6cee92]210 output << indent;
[e39241b]211 }
212
[593370c]213 output << kind;
214 genAttributes( aggDecl->get_attributes() );
215 output << aggDecl->get_name();
[71f4e4f]216
[2c57025]217 if ( aggDecl->has_body() ) {
218 std::list< Declaration * > & memb = aggDecl->get_members();
[94b4364]219 output << " {" << endl;
[51587aa]220
[f7cb0bc]221 ++indent;
[3778cb2]222 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]223 output << indent;
[9857e8d]224 (*i)->accept( *visitor );
[6c4ff37]225 output << ";" << endl;
[3778cb2]226 } // for
[51587aa]227
[f7cb0bc]228 --indent;
[51587aa]229
[cda48b6]230 output << indent << "}";
[17cd4eb]231 } // if
[51587aa]232 }
[17cd4eb]233
[9857e8d]234 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]235 extension( structDecl );
[5f642e38]236 handleAggregate( structDecl, "struct " );
[51587aa]237 }
[17cd4eb]238
[9857e8d]239 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]240 extension( unionDecl );
[5f642e38]241 handleAggregate( unionDecl, "union " );
[51587aa]242 }
[71f4e4f]243
[9857e8d]244 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]245 extension( enumDecl );
[6c4ff37]246 output << "enum ";
[c0aa336]247 genAttributes( enumDecl->get_attributes() );
[51587aa]248
[a984e65]249 output << enumDecl->get_name();
[71f4e4f]250
[8e9cbb2]251 std::list< Declaration* > &memb = enumDecl->get_members();
[51587aa]252
253 if ( ! memb.empty() ) {
[cda48b6]254 output << " {" << endl;
[51587aa]255
[f7cb0bc]256 ++indent;
[51587aa]257 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]258 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]259 assert( obj );
[87e08e24]260 output << indent << mangleName( obj );
[51587aa]261 if ( obj->get_init() ) {
[6c4ff37]262 output << " = ";
[9857e8d]263 obj->get_init()->accept( *visitor );
[51587aa]264 } // if
[6c4ff37]265 output << "," << endl;
[51587aa]266 } // for
267
[f7cb0bc]268 --indent;
[51587aa]269
[cda48b6]270 output << indent << "}";
[51587aa]271 } // if
272 }
[71f4e4f]273
[9857e8d]274 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[a0c7dc36]275 assertf( ! genC, "TraitDecls should not reach code generation." );
[a984e65]276 extension( traitDecl );
277 handleAggregate( traitDecl, "trait " );
278 }
[71f4e4f]279
[9857e8d]280 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[e39241b]281 assertf( ! genC, "Typedefs are removed and substituted in earlier passes." );
282 output << "typedef ";
283 output << genType( typeDecl->get_base(), typeDecl->get_name(), pretty, genC ) << endl;
[51587aa]284 }
[71f4e4f]285
[9857e8d]286 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[a0c7dc36]287 assertf( ! genC, "TypeDecls should not reach code generation." );
[ab4bff5]288 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]289 if ( typeDecl->sized ) {
[ab4bff5]290 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]291 }
[ab4bff5]292 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]293 output << " | { ";
[ab4bff5]294 for ( DeclarationWithType * assert : typeDecl->assertions ) {
295 assert->accept( *visitor );
296 output << "; ";
297 }
[a0c7dc36]298 output << " }";
[e39241b]299 }
[51587aa]300 }
301
[92fea32]302 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
303 output << "_Static_assert(";
304 assertDecl->condition->accept( *visitor );
305 output << ", ";
306 assertDecl->message->accept( *visitor );
307 output << ")";
308 }
309
[9857e8d]310 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]311 std::list< Expression * > designators = designation->get_designators();
[e45215c]312 if ( designators.size() == 0 ) return;
[e4d829b]313 for ( Expression * des : designators ) {
[62423350]314 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
315 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
316 output << ".";
[9857e8d]317 des->accept( *visitor );
[e4d829b]318 } else {
[62423350]319 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array eleemnt
320 output << "[";
[9857e8d]321 des->accept( *visitor );
[62423350]322 output << "]";
[3778cb2]323 } // if
324 } // for
[e45215c]325 output << " = ";
326 }
327
[9857e8d]328 void CodeGenerator::postvisit( SingleInit * init ) {
329 init->get_value()->accept( *visitor );
[51587aa]330 }
331
[9857e8d]332 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]333 auto initBegin = init->begin();
334 auto initEnd = init->end();
335 auto desigBegin = init->get_designations().begin();
336 auto desigEnd = init->get_designations().end();
337
[6c4ff37]338 output << "{ ";
[e4d829b]339 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]340 (*desigBegin)->accept( *visitor );
341 (*initBegin)->accept( *visitor );
[e4d829b]342 ++initBegin, ++desigBegin;
343 if ( initBegin != initEnd ) {
344 output << ", ";
345 }
346 }
[6c4ff37]347 output << " }";
[e4d829b]348 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]349 }
350
[d22e90f]351 void CodeGenerator::postvisit( ConstructorInit * init ){
[e39241b]352 assertf( ! genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]353 // pseudo-output for constructor/destructor pairs
[d22e90f]354 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]355 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]356 output << ", " << endl << indent << "dtor: ";
[9857e8d]357 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]358 output << endl << --indent << "}";
[fc638d2]359 }
360
[9857e8d]361 void CodeGenerator::postvisit( Constant * constant ) {
[6c4ff37]362 output << constant->get_value() ;
[51587aa]363 }
364
[4810867]365 // *** Expressions
[9857e8d]366 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]367 extension( applicationExpr );
[8688ce1]368 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[51587aa]369 OperatorInfo opInfo;
370 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) {
371 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
372 switch ( opInfo.type ) {
373 case OT_INDEX:
374 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]375 (*arg++)->accept( *visitor );
[6c4ff37]376 output << "[";
[9857e8d]377 (*arg)->accept( *visitor );
[6c4ff37]378 output << "]";
[51587aa]379 break;
[71f4e4f]380
[51587aa]381 case OT_CALL:
[356189a]382 // there are no intrinsic definitions of the function call operator
[51587aa]383 assert( false );
384 break;
[71f4e4f]385
[f1e012b]386 case OT_CTOR:
[c2ce2350]387 case OT_DTOR:
[356189a]388 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]389 // the expression fed into a single parameter constructor or destructor may contain side
390 // effects, so must still output this expression
[64071c2]391 output << "(";
[9857e8d]392 (*arg++)->accept( *visitor );
[64071c2]393 output << ") /* " << opInfo.inputName << " */";
[356189a]394 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]395 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]396 output << "(";
[9857e8d]397 (*arg++)->accept( *visitor );
[356189a]398 output << opInfo.symbol;
[9857e8d]399 (*arg)->accept( *visitor );
[c2ce2350]400 output << ") /* " << opInfo.inputName << " */";
[356189a]401 } else {
[c2ce2350]402 // no constructors with 0 or more than 2 parameters
[356189a]403 assert( false );
[8688ce1]404 } // if
[356189a]405 break;
[f1e012b]406
[51587aa]407 case OT_PREFIX:
408 case OT_PREFIXASSIGN:
409 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]410 output << "(";
411 output << opInfo.symbol;
[9857e8d]412 (*arg)->accept( *visitor );
[6c4ff37]413 output << ")";
[51587aa]414 break;
[71f4e4f]415
[51587aa]416 case OT_POSTFIX:
417 case OT_POSTFIXASSIGN:
418 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]419 (*arg)->accept( *visitor );
[6c4ff37]420 output << opInfo.symbol;
[51587aa]421 break;
422
[f1e012b]423
[51587aa]424 case OT_INFIX:
425 case OT_INFIXASSIGN:
426 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]427 output << "(";
[9857e8d]428 (*arg++)->accept( *visitor );
[6c4ff37]429 output << opInfo.symbol;
[9857e8d]430 (*arg)->accept( *visitor );
[6c4ff37]431 output << ")";
[51587aa]432 break;
[71f4e4f]433
[51587aa]434 case OT_CONSTANT:
[721f17a]435 case OT_LABELADDRESS:
436 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]437 assert( false );
[3778cb2]438 } // switch
[17cd4eb]439 } else {
[9857e8d]440 varExpr->accept( *visitor );
[6c4ff37]441 output << "(";
[51587aa]442 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]443 output << ")";
[17cd4eb]444 } // if
[51587aa]445 } else {
[9857e8d]446 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]447 output << "(";
[51587aa]448 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]449 output << ")";
[51587aa]450 } // if
451 }
[71f4e4f]452
[9857e8d]453 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]454 extension( untypedExpr );
[22bc276]455 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[51587aa]456 OperatorInfo opInfo;
[22bc276]457 if ( operatorLookup( nameExpr->name, opInfo ) ) {
458 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[51587aa]459 switch ( opInfo.type ) {
460 case OT_INDEX:
[22bc276]461 assert( untypedExpr->args.size() == 2 );
[9857e8d]462 (*arg++)->accept( *visitor );
[6c4ff37]463 output << "[";
[9857e8d]464 (*arg)->accept( *visitor );
[6c4ff37]465 output << "]";
[51587aa]466 break;
[71f4e4f]467
[51587aa]468 case OT_CALL:
[f1e012b]469 assert( false );
470
[c2ce2350]471 case OT_CTOR:
472 case OT_DTOR:
[22bc276]473 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]474 // the expression fed into a single parameter constructor or destructor may contain side
475 // effects, so must still output this expression
[64071c2]476 output << "(";
[9857e8d]477 (*arg++)->accept( *visitor );
[64071c2]478 output << ") /* " << opInfo.inputName << " */";
[c2ce2350]479 } else if ( untypedExpr->get_args().size() == 2 ) {
480 // intrinsic two parameter constructors are essentially bitwise assignment
481 output << "(";
[9857e8d]482 (*arg++)->accept( *visitor );
[c2ce2350]483 output << opInfo.symbol;
[9857e8d]484 (*arg)->accept( *visitor );
[c2ce2350]485 output << ") /* " << opInfo.inputName << " */";
486 } else {
487 // no constructors with 0 or more than 2 parameters
[4e8949f]488 assertf( ! genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
489 output << "(";
490 (*arg++)->accept( *visitor );
491 output << opInfo.symbol << "{ ";
[22bc276]492 genCommaList( arg, untypedExpr->args.end() );
[4e8949f]493 output << "}) /* " << opInfo.inputName << " */";
[3778cb2]494 } // if
[51587aa]495 break;
[71f4e4f]496
[51587aa]497 case OT_PREFIX:
498 case OT_PREFIXASSIGN:
[de62360d]499 case OT_LABELADDRESS:
[22bc276]500 assert( untypedExpr->args.size() == 1 );
[6c4ff37]501 output << "(";
502 output << opInfo.symbol;
[9857e8d]503 (*arg)->accept( *visitor );
[6c4ff37]504 output << ")";
[51587aa]505 break;
[71f4e4f]506
[51587aa]507 case OT_POSTFIX:
508 case OT_POSTFIXASSIGN:
[22bc276]509 assert( untypedExpr->args.size() == 1 );
[9857e8d]510 (*arg)->accept( *visitor );
[6c4ff37]511 output << opInfo.symbol;
[51587aa]512 break;
[71f4e4f]513
[51587aa]514 case OT_INFIX:
515 case OT_INFIXASSIGN:
[22bc276]516 assert( untypedExpr->args.size() == 2 );
[6c4ff37]517 output << "(";
[9857e8d]518 (*arg++)->accept( *visitor );
[6c4ff37]519 output << opInfo.symbol;
[9857e8d]520 (*arg)->accept( *visitor );
[6c4ff37]521 output << ")";
[51587aa]522 break;
[71f4e4f]523
[51587aa]524 case OT_CONSTANT:
525 // there are no intrinsic definitions of 0 or 1 as functions
526 assert( false );
[3778cb2]527 } // switch
[51587aa]528 } else {
[22bc276]529 // builtin routines
530 nameExpr->accept( *visitor );
531 output << "(";
532 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
533 output << ")";
[51587aa]534 } // if
535 } else {
[22bc276]536 untypedExpr->function->accept( *visitor );
[6c4ff37]537 output << "(";
[22bc276]538 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]539 output << ")";
[51587aa]540 } // if
541 }
[71f4e4f]542
[9857e8d]543 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]544 rangeExpr->low->accept( *visitor );
[064e3ff]545 output << " ... ";
[22bc276]546 rangeExpr->high->accept( *visitor );
[064e3ff]547 }
548
[9857e8d]549 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]550 extension( nameExpr );
[51587aa]551 OperatorInfo opInfo;
[5ea7a22]552 if ( operatorLookup( nameExpr->name, opInfo ) ) {
553 if ( opInfo.type == OT_CONSTANT ) {
554 output << opInfo.symbol;
555 } else {
556 output << opInfo.outputName;
557 }
[51587aa]558 } else {
[6c4ff37]559 output << nameExpr->get_name();
[51587aa]560 } // if
561 }
[71f4e4f]562
[9857e8d]563 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]564 extension( addressExpr );
[6c4ff37]565 output << "(&";
[9857e8d]566 addressExpr->arg->accept( *visitor );
[6c4ff37]567 output << ")";
[51587aa]568 }
569
[9857e8d]570 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]571 extension( addressExpr );
572 output << "(&&" << addressExpr->arg << ")";
573 }
574
[9857e8d]575 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]576 extension( castExpr );
[803deb1]577 output << "(";
[906e24d]578 if ( castExpr->get_result()->isVoid() ) {
[803deb1]579 output << "(void)" ;
[d104b02]580 } else {
581 // at least one result type of cast.
582 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
583 // an lvalue cast, this has been taken out.
[803deb1]584 output << "(";
[e39241b]585 output << genType( castExpr->get_result(), "", pretty, genC );
[71f4e4f]586 output << ")";
[3778cb2]587 } // if
[9857e8d]588 castExpr->get_arg()->accept( *visitor );
[803deb1]589 output << ")";
[51587aa]590 }
[71f4e4f]591
[9857e8d]592 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[a5f0529]593 assertf( ! genC, "VirtualCastExpr should not reach code generation." );
594 extension( castExpr );
595 output << "(virtual ";
[9857e8d]596 castExpr->get_arg()->accept( *visitor );
[a5f0529]597 output << ")";
598 }
599
[9857e8d]600 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[e39241b]601 assertf( ! genC, "UntypedMemberExpr should not reach code generation." );
602 extension( memberExpr );
[9857e8d]603 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]604 output << ".";
[9857e8d]605 memberExpr->get_member()->accept( *visitor );
[51587aa]606 }
[71f4e4f]607
[9857e8d]608 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]609 extension( memberExpr );
[9857e8d]610 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]611 output << "." << mangleName( memberExpr->get_member() );
[51587aa]612 }
[71f4e4f]613
[9857e8d]614 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]615 extension( variableExpr );
[51587aa]616 OperatorInfo opInfo;
617 if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) {
[6c4ff37]618 output << opInfo.symbol;
[51587aa]619 } else {
[6c4ff37]620 output << mangleName( variableExpr->get_var() );
[51587aa]621 } // if
622 }
[71f4e4f]623
[9857e8d]624 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]625 assert( constantExpr->get_constant() );
[e04ef3a]626 extension( constantExpr );
[9857e8d]627 constantExpr->get_constant()->accept( *visitor );
[51587aa]628 }
[71f4e4f]629
[9857e8d]630 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]631 extension( sizeofExpr );
[6c4ff37]632 output << "sizeof(";
[51587aa]633 if ( sizeofExpr->get_isType() ) {
[e39241b]634 output << genType( sizeofExpr->get_type(), "", pretty, genC );
[51587aa]635 } else {
[9857e8d]636 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]637 } // if
[6c4ff37]638 output << ")";
[51587aa]639 }
[47534159]640
[9857e8d]641 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]642 // use GCC extension to avoid bumping std to C11
[8e9cbb2]643 extension( alignofExpr );
[47534159]644 output << "__alignof__(";
[25a054f]645 if ( alignofExpr->get_isType() ) {
[e39241b]646 output << genType( alignofExpr->get_type(), "", pretty, genC );
[47534159]647 } else {
[9857e8d]648 alignofExpr->get_expr()->accept( *visitor );
[47534159]649 } // if
650 output << ")";
651 }
[71f4e4f]652
[9857e8d]653 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[e39241b]654 assertf( ! genC, "UntypedOffsetofExpr should not reach code generation." );
655 output << "offsetof(";
656 output << genType( offsetofExpr->get_type(), "", pretty, genC );
657 output << ", " << offsetofExpr->get_member();
658 output << ")";
[2a4b088]659 }
660
[9857e8d]661 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]662 // use GCC builtin
663 output << "__builtin_offsetof(";
[e39241b]664 output << genType( offsetofExpr->get_type(), "", pretty, genC );
[e551c69]665 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]666 output << ")";
667 }
[d63eeb0]668
[9857e8d]669 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[e39241b]670 assertf( ! genC, "OffsetPackExpr should not reach code generation." );
671 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", pretty, genC ) << ")";
[afc1045]672 }
[70a06f6]673
[9857e8d]674 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]675 extension( logicalExpr );
[6c4ff37]676 output << "(";
[9857e8d]677 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]678 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]679 output << " && ";
[51587aa]680 } else {
[6c4ff37]681 output << " || ";
[51587aa]682 } // if
[9857e8d]683 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]684 output << ")";
[51587aa]685 }
[71f4e4f]686
[9857e8d]687 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]688 extension( conditionalExpr );
[6c4ff37]689 output << "(";
[9857e8d]690 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]691 output << " ? ";
[9857e8d]692 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]693 output << " : ";
[9857e8d]694 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]695 output << ")";
[51587aa]696 }
[71f4e4f]697
[9857e8d]698 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]699 extension( commaExpr );
[6c4ff37]700 output << "(";
[8a6cf7e]701 if ( genC ) {
702 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
703 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
704 }
[9857e8d]705 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]706 output << " , ";
[9857e8d]707 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]708 output << ")";
[51587aa]709 }
[71f4e4f]710
[9857e8d]711 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[d104b02]712 assertf( ! genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]713 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]714 }
715
[9857e8d]716 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[e39241b]717 assertf( ! genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]718 extension( tupleExpr );
[e39241b]719 output << "[";
720 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
721 output << "]";
722 }
[907eccb]723
[9857e8d]724 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[e39241b]725 assertf( ! genC, "TupleExpr should not reach code generation." );
[f975c65]726 extension( tupleExpr );
[e39241b]727 output << "[";
728 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
729 output << "]";
730 }
[71f4e4f]731
[9857e8d]732 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[f975c65]733 assertf( ! genC, "TupleIndexExpr should not reach code generation." );
734 extension( tupleExpr );
[9857e8d]735 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]736 output << "." << tupleExpr->get_index();
737 }
738
[9857e8d]739 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[e4d829b]740 // if ( genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
741 // assertf( ! genC, "TypeExpr should not reach code generation." );
742 if ( ! genC ) {
743 output<< genType( typeExpr->get_type(), "", pretty, genC );
744 }
[e39241b]745 }
[2b6c1e0]746
[9857e8d]747 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[7f5566b]748 if ( asmExpr->get_inout() ) {
749 output << "[ ";
[9857e8d]750 asmExpr->get_inout()->accept( *visitor );
[7f5566b]751 output << " ] ";
752 } // if
[9857e8d]753 asmExpr->get_constraint()->accept( *visitor );
[7f5566b]754 output << " ( ";
[9857e8d]755 asmExpr->get_operand()->accept( *visitor );
[7f5566b]756 output << " )";
757 }
758
[9857e8d]759 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]760 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[e39241b]761 output << "(" << genType( compLitExpr->get_result(), "", pretty, genC ) << ")";
[9857e8d]762 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]763 }
764
[9857e8d]765 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[d104b02]766 assertf( ! genC, "Unique expressions should not reach code generation." );
767 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]768 unqExpr->get_expr()->accept( *visitor );
[d104b02]769 output << " }";
770 }
771
[9857e8d]772 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]773 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]774 output << "({" << endl;
[f7cb0bc]775 ++indent;
[3c13c03]776 unsigned int numStmts = stmts.size();
777 unsigned int i = 0;
778 for ( Statement * stmt : stmts ) {
[058f549]779 output << indent << printLabels( stmt->get_labels() );
[3c13c03]780 if ( i+1 == numStmts ) {
781 // last statement in a statement expression needs to be handled specially -
782 // cannot cast to void, otherwise the expression statement has no value
783 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]784 exprStmt->expr->accept( *visitor );
[3c13c03]785 output << ";" << endl;
786 ++i;
787 break;
788 }
789 }
[9857e8d]790 stmt->accept( *visitor );
[3c13c03]791 output << endl;
792 if ( wantSpacing( stmt ) ) {
793 output << endl;
794 } // if
795 ++i;
796 }
[f7cb0bc]797 --indent;
[3c13c03]798 output << indent << "})";
[6eb8948]799 }
800
[4e8949f]801 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
802 assertf( ! genC, "Unique expressions should not reach code generation." );
803 expr->callExpr->accept( *visitor );
804 }
805
[44b4114]806 void CodeGenerator::postvisit( DeletedExpr * expr ) {
807 assertf( ! genC, "Deleted expressions should not reach code generation." );
808 expr->expr->accept( *visitor );
809 }
810
[4810867]811 // *** Statements
[9857e8d]812 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]813 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]814 output << "{" << endl;
[51587aa]815
[f7cb0bc]816 ++indent;
[51587aa]817
[7f5566b]818 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]819 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]820 (*i)->accept( *visitor );
[2b6c1e0]821
[6c4ff37]822 output << endl;
[2b6c1e0]823 if ( wantSpacing( *i ) ) {
824 output << endl;
[3778cb2]825 } // if
[8688ce1]826 } // for
[f7cb0bc]827 --indent;
[51587aa]828
[cda48b6]829 output << indent << "}";
[51587aa]830 }
831
[9857e8d]832 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]833 assert( exprStmt );
[262f085f]834 if ( genC ) {
835 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]836 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]837 }
[9857e8d]838 exprStmt->get_expr()->accept( *visitor );
[321a2481]839 output << ";";
[51587aa]840 }
841
[9857e8d]842 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]843 output << "asm ";
844 if ( asmStmt->get_voltile() ) output << "volatile ";
845 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
846 output << "( ";
[9857e8d]847 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]848 output << " : ";
849 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
850 output << " : ";
851 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
852 output << " : ";
853 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
854 if ( ! asmStmt->get_gotolabels().empty() ) {
855 output << " : ";
856 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
857 output << *begin++;
858 if ( begin == asmStmt->get_gotolabels().end() ) break;
859 output << ", ";
860 } // for
861 } // if
862 output << " );" ;
863 }
864
[9857e8d]865 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]866 output << "asm ";
867 AsmStmt * asmStmt = asmDecl->get_stmt();
868 output << "( ";
[9857e8d]869 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[e994912]870 output << " )" ;
871 }
872
[9857e8d]873 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]874 output << "if ( ";
[9857e8d]875 ifStmt->get_condition()->accept( *visitor );
[7f5566b]876 output << " ) ";
[51587aa]877
[9857e8d]878 ifStmt->get_thenPart()->accept( *visitor );
[51587aa]879
880 if ( ifStmt->get_elsePart() != 0) {
[2b6c1e0]881 output << " else ";
[9857e8d]882 ifStmt->get_elsePart()->accept( *visitor );
[51587aa]883 } // if
884 }
885
[9857e8d]886 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[7f5566b]887 output << "switch ( " ;
[9857e8d]888 switchStmt->get_condition()->accept( *visitor );
[7f5566b]889 output << " ) ";
[71f4e4f]890
[d22e90f]891 output << "{" << endl;
[f7cb0bc]892 ++indent;
[9857e8d]893 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]894 --indent;
[cda48b6]895 output << indent << "}";
[51587aa]896 }
897
[9857e8d]898 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]899 updateLocation( caseStmt );
[1dcd9554]900 output << indent;
[eb3261f]901 if ( caseStmt->isDefault()) {
[2b6c1e0]902 output << "default";
[eb3261f]903 } else {
[2b6c1e0]904 output << "case ";
[9857e8d]905 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]906 } // if
[d22e90f]907 output << ":" << endl;
[71f4e4f]908
[51587aa]909 std::list<Statement *> sts = caseStmt->get_statements();
910
[f7cb0bc]911 ++indent;
[51587aa]912 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[cda48b6]913 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]914 (*i)->accept( *visitor );
[6c4ff37]915 output << endl;
[3778cb2]916 } // for
[f7cb0bc]917 --indent;
[51587aa]918 }
919
[9857e8d]920 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]921 switch ( branchStmt->get_type()) {
922 case BranchStmt::Goto:
923 if ( ! branchStmt->get_target().empty() )
[6c4ff37]924 output << "goto " << branchStmt->get_target();
[71f4e4f]925 else {
[51587aa]926 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]927 output << "goto *";
[9857e8d]928 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]929 } // if
930 } // if
931 break;
932 case BranchStmt::Break:
[6c4ff37]933 output << "break";
[51587aa]934 break;
935 case BranchStmt::Continue:
[6c4ff37]936 output << "continue";
[51587aa]937 break;
[7c2a7b6]938 case BranchStmt::FallThrough:
939 case BranchStmt::FallThroughDefault:
940 assertf( ! genC, "fallthru should not reach code generation." );
941 output << "fallthru";
942 break;
[3778cb2]943 } // switch
[7c2a7b6]944 // print branch target for labelled break/continue/fallthru in debug mode
945 if ( ! genC && branchStmt->get_type() != BranchStmt::Goto ) {
946 if ( ! branchStmt->get_target().empty() ) {
947 output << " " << branchStmt->get_target();
948 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
949 output << " default";
950 }
951 }
[2b6c1e0]952 output << ";";
[51587aa]953 }
954
[9857e8d]955 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]956 output << "return ";
[9857e8d]957 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]958 output << ";";
[51587aa]959 }
960
[9857e8d]961 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[daf1af8]962 assertf( ! genC, "Throw statements should not reach code generation." );
963
964 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
965 "throw" : "throwResume");
966 if (throwStmt->get_expr()) {
967 output << " ";
[9857e8d]968 throwStmt->get_expr()->accept( *visitor );
[daf1af8]969 }
970 if (throwStmt->get_target()) {
971 output << " _At ";
[9857e8d]972 throwStmt->get_target()->accept( *visitor );
[daf1af8]973 }
974 output << ";";
975 }
[e4ea10b7]976 void CodeGenerator::postvisit( CatchStmt * stmt ) {
977 assertf( ! genC, "Catch statements should not reach code generation." );
978
979 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
980 "catch" : "catchResume");
981 output << "( ";
982 stmt->decl->accept( *visitor );
983 output << " ) ";
984
985 if( stmt->cond ) {
986 output << "if/when(?) (";
987 stmt->cond->accept( *visitor );
988 output << ") ";
989 }
990 stmt->body->accept( *visitor );
991 }
992
993 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
994 assertf( ! genC, "Waitfor statements should not reach code generation." );
995
996 bool first = true;
997 for( auto & clause : stmt->clauses ) {
998 if(first) { output << "or "; first = false; }
999 if( clause.condition ) {
1000 output << "when(";
1001 stmt->timeout.condition->accept( *visitor );
1002 output << ") ";
1003 }
1004 output << "waitfor(";
1005 clause.target.function->accept( *visitor );
1006 for( Expression * expr : clause.target.arguments ) {
1007 output << ",";
1008 expr->accept( *visitor );
1009 }
1010 output << ") ";
1011 clause.statement->accept( *visitor );
1012 }
1013
1014 if( stmt->timeout.statement ) {
1015 output << "or ";
1016 if( stmt->timeout.condition ) {
1017 output << "when(";
1018 stmt->timeout.condition->accept( *visitor );
1019 output << ") ";
1020 }
1021 output << "timeout(";
1022 stmt->timeout.time->accept( *visitor );
1023 output << ") ";
1024 stmt->timeout.statement->accept( *visitor );
1025 }
1026
1027 if( stmt->orelse.statement ) {
1028 output << "or ";
1029 if( stmt->orelse.condition ) {
1030 output << "when(";
1031 stmt->orelse.condition->accept( *visitor );
1032 output << ")";
1033 }
1034 output << "else ";
1035 stmt->orelse.statement->accept( *visitor );
1036 }
1037 }
1038
[55d6e8de]1039 void CodeGenerator::postvisit( WithStmt * with ) {
1040 if ( ! genC ) {
1041 output << "with ( ";
1042 genCommaList( with->exprs.begin(), with->exprs.end() );
1043 output << " ) ";
1044 }
1045 with->stmt->accept( *visitor );
1046 }
[daf1af8]1047
[9857e8d]1048 void CodeGenerator::postvisit( WhileStmt * whileStmt ) {
[321a2481]1049 if ( whileStmt->get_isDoWhile() ) {
[6c4ff37]1050 output << "do" ;
[321a2481]1051 } else {
[6c4ff37]1052 output << "while (" ;
[9857e8d]1053 whileStmt->get_condition()->accept( *visitor );
[6c4ff37]1054 output << ")";
[51587aa]1055 } // if
[2b6c1e0]1056 output << " ";
[51587aa]1057
[2b6c1e0]1058 output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() );
[9857e8d]1059 whileStmt->get_body()->accept( *visitor );
[51587aa]1060
[cda48b6]1061 output << indent;
[51587aa]1062
1063 if ( whileStmt->get_isDoWhile() ) {
[6c4ff37]1064 output << " while (" ;
[9857e8d]1065 whileStmt->get_condition()->accept( *visitor );
[6c4ff37]1066 output << ");";
[51587aa]1067 } // if
1068 }
1069
[9857e8d]1070 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1071 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1072 output << "for (;";
[51587aa]1073
[321a2481]1074 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1075 forStmt->get_condition()->accept( *visitor );
[3778cb2]1076 } // if
[6c4ff37]1077 output << ";";
[51587aa]1078
[321a2481]1079 if ( forStmt->get_increment() != 0 ) {
1080 // cast the top-level expression to void to reduce gcc warnings.
1081 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1082 expr->accept( *visitor );
[3778cb2]1083 } // if
[2b6c1e0]1084 output << ") ";
[51587aa]1085
1086 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1087 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1088 forStmt->get_body()->accept( *visitor );
[51587aa]1089 } // if
1090 }
1091
[9857e8d]1092 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1093 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1094 output << "/* null statement */ ;";
[51587aa]1095 }
1096
[9857e8d]1097 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1098 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1099
[51587aa]1100 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1101 output << ";";
[51587aa]1102 } // if
1103 }
1104
[9857e8d]1105 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
1106 assertf( ! genC, "ImplicitCtorDtorStmts should not reach code generation." );
1107 stmt->callStmt->accept( *visitor );
1108 }
1109
[dd020c0]1110 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1111 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1112 decl->get_storageClasses().print( output );
[a7c90d4]1113 } // if
[dd020c0]1114 } // CodeGenerator::handleStorageClass
[9facf3b]1115
1116 std::string genName( DeclarationWithType * decl ) {
1117 CodeGen::OperatorInfo opInfo;
1118 if ( operatorLookup( decl->get_name(), opInfo ) ) {
1119 return opInfo.outputName;
1120 } else {
1121 return decl->get_name();
1122 } // if
1123 }
[51b73452]1124} // namespace CodeGen
[51587aa]1125
[50377a4]1126
1127unsigned Indenter::tabsize = 2;
1128
[e149f77]1129std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) {
1130 if ( node ) {
1131 node->print( out );
1132 } else {
1133 out << "nullptr";
1134 }
1135 return out;
1136}
1137
[51587aa]1138// Local Variables: //
1139// tab-width: 4 //
1140// mode: c++ //
1141// compile-command: "make install" //
1142// End: //
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