source: src/CodeGen/CodeGenerator.cc@ e4ea4b8d

ADT ast-experimental pthread-emulation qualifiedEnum
Last change on this file since e4ea4b8d was b99fd56, checked in by Thierry Delisle <tdelisle@…>, 3 years ago

CodeGeneration now generates variable exprs of type zero_t as litteral 0s.
  • Property mode set to 100644
File size: 39.2 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
[de8d7fb1]11// Last Modified By : Peter A. Buhr
[6180274]12// Last Modified On : Wed Feb 2 20:30:30 2022
13// Update Count : 541
[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
[07de76b]25#include "SynTree/LinkageSpec.h" // for Spec, Intrinsic
[bf2438c]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
[60a8062]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 ) ||
[3b0bc16]44 dynamic_cast< WhileDoStmt * >( 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
[60a8062]80 // Using updateLocation at the beginning of a node and endl within a node should become the method of formating.
[8bafacc]81 void CodeGenerator::updateLocation( CodeLocation const & to ) {
[d22e90f]82 // skip if linemarks shouldn't appear or if codelocation is unset
[42a36d9]83 if ( !options.lineMarks || to.isUnset() ) return;
[d22e90f]84
85 if ( currentLocation.followedBy( to, 0 ) ) {
[8bafacc]86 return;
87 } else if ( currentLocation.followedBy( to, 1 ) ) {
88 output << "\n" << indent;
[d48e529]89 currentLocation.first_line += 1;
[8bafacc]90 } else if ( currentLocation.followedBy( to, 2 ) ) {
91 output << "\n\n" << indent;
[d48e529]92 currentLocation.first_line += 2;
[8bafacc]93 } else {
[d48e529]94 output << "\n# " << to.first_line << " \"" << to.filename
[60a8062]95 << "\"\n" << indent;
[8bafacc]96 currentLocation = to;
97 }
98 output << std::flush;
99 }
[c850687]100
[8bafacc]101 void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) {
102 updateLocation( to->location );
[c850687]103 }
104
[d22e90f]105 // replace endl
106 ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const {
107 // if ( !cg.lineMarks ) {
108 // os << "\n" << cg.indent << std::flush;
109 // }
110 os << "\n" << std::flush;
111 cg.currentLocation.first_line++;
112 // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/";
113 return os;
[c850687]114 }
115
[4e5e6cc]116 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 ) {}
117 CodeGenerator::CodeGenerator( std::ostream & os, const Options &options ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options(options), endl( *this ) {}
[cda48b6]118
[486341f]119 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]120 // GCC builtins should always be printed unmangled
[42a36d9]121 if ( options.pretty || decl->linkage.is_gcc_builtin ) return decl->name;
[16ba4a6f]122 if ( LinkageSpec::isMangled(decl->linkage) && decl->mangleName != "" ) {
[f326f99]123 // need to incorporate scope level in order to differentiate names for destructors
124 return decl->get_scopedMangleName();
[51587aa]125 } else {
[13073be]126 return decl->name;
[51587aa]127 } // if
128 }
[94b4364]129
[44a81853]130 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
[60a8062]131 if ( attributes.empty() ) return;
[44a81853]132 output << "__attribute__ ((";
133 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]134 output << (*attr)->name;
135 if ( ! (*attr)->parameters.empty() ) {
[44a81853]136 output << "(";
[85b2300]137 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]138 output << ")";
139 } // if
[60a8062]140 if ( ++attr == attributes.end() ) break;
[44a81853]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
[5f08961d]161 // *** Expression
162 void CodeGenerator::previsit( Expression * node ) {
163 previsit( (BaseSyntaxNode *)node );
164 GuardAction( [this, node](){
[60a8062]165 if ( options.printExprTypes && node->result ) {
166 output << " /* " << genType( node->result, "", options ) << " */ ";
167 }
168 } );
[5f08961d]169 }
170
[4810867]171 // *** Declarations
[9857e8d]172 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]173 // deleted decls should never be used, so don't print them
[42a36d9]174 if ( functionDecl->isDeleted && options.genC ) return;
[8e9cbb2]175 extension( functionDecl );
[7baed7d]176 genAttributes( functionDecl->get_attributes() );
177
[51587aa]178 handleStorageClass( functionDecl );
[6e8bd43]179 functionDecl->get_funcSpec().print( output );
[dd020c0]180
[da09ba1]181 Options subOptions = options;
[76f7fc7]182 subOptions.anonymousUnused = functionDecl->has_body();
[da09ba1]183 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), subOptions );
[51587aa]184
[58dd019]185 asmName( functionDecl );
186
[51587aa]187 if ( functionDecl->get_statements() ) {
[9857e8d]188 functionDecl->get_statements()->accept( *visitor );
[51587aa]189 } // if
[3ed994e]190 if ( functionDecl->isDeleted ) {
191 output << " = void";
192 }
[51587aa]193 }
194
[9857e8d]195 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]196 // deleted decls should never be used, so don't print them
[42a36d9]197 if ( objectDecl->isDeleted && options.genC ) return;
[de8d7fb1]198
199 // gcc allows an empty declarator (no name) for bit-fields and C states: 6.7.2.1 Structure and union specifiers,
200 // point 4, page 113: If the (bit field) value is zero, the declaration shall have no declarator. For anything
201 // else, the anonymous name refers to the anonymous object for plan9 inheritance.
202 if ( objectDecl->get_name().empty() && options.genC && ! objectDecl->get_bitfieldWidth() ) {
[e39241b]203 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]204 static UniqueName name = { "__anonymous_object" };
205 objectDecl->set_name( name.newName() );
[de8d7fb1]206 // Stops unused parameter warnings.
207 if ( options.anonymousUnused ) {
208 objectDecl->attributes.push_back( new Attribute( "unused" ) );
209 }
[d9c8a59]210 }
211
[8e9cbb2]212 extension( objectDecl );
[f9cebb5]213 genAttributes( objectDecl->get_attributes() );
214
[51587aa]215 handleStorageClass( objectDecl );
[42a36d9]216 output << genType( objectDecl->get_type(), mangleName( objectDecl ), options.pretty, options.genC );
[71f4e4f]217
[58dd019]218 asmName( objectDecl );
219
[51587aa]220 if ( objectDecl->get_init() ) {
[6c4ff37]221 output << " = ";
[9857e8d]222 objectDecl->get_init()->accept( *visitor );
[51587aa]223 } // if
[3ed994e]224 if ( objectDecl->isDeleted ) {
225 output << " = void";
226 }
[3778cb2]227
[51587aa]228 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]229 output << ":";
[9857e8d]230 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]231 } // if
232 }
233
[5f642e38]234 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[42a36d9]235 if( ! aggDecl->parameters.empty() && ! options.genC ) {
[e39241b]236 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
237 output << "forall(";
[0b3b2ae]238 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]239 output << ")" << endl;
[e6cee92]240 output << indent;
[e39241b]241 }
242
[593370c]243 output << kind;
[0b3b2ae]244 genAttributes( aggDecl->attributes );
245 output << aggDecl->name;
[71f4e4f]246
[2c57025]247 if ( aggDecl->has_body() ) {
[0b3b2ae]248 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]249 output << " {" << endl;
[51587aa]250
[f7cb0bc]251 ++indent;
[3778cb2]252 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]253 output << indent;
[9857e8d]254 (*i)->accept( *visitor );
[6c4ff37]255 output << ";" << endl;
[3778cb2]256 } // for
[51587aa]257
[f7cb0bc]258 --indent;
[51587aa]259
[cda48b6]260 output << indent << "}";
[17cd4eb]261 } // if
[51587aa]262 }
[17cd4eb]263
[9857e8d]264 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]265 extension( structDecl );
[5f642e38]266 handleAggregate( structDecl, "struct " );
[51587aa]267 }
[17cd4eb]268
[9857e8d]269 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]270 extension( unionDecl );
[5f642e38]271 handleAggregate( unionDecl, "union " );
[51587aa]272 }
[71f4e4f]273
[9857e8d]274 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]275 extension( enumDecl );
276 std::list< Declaration* > &memb = enumDecl->get_members();
[d8e2a09]277 if (enumDecl->base && ! memb.empty()) {
[30d91e4]278 unsigned long long last_val = -1;
[51587aa]279 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]280 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]281 assert( obj );
[4390fb6]282 output << "static const ";
283 output << genType(enumDecl->base, "", options) << " ";
284 output << mangleName( obj ) << " ";
285 output << " = ";
[30d91e4]286 output << "(" << genType(enumDecl->base, "", options) << ")";
287 if ( (BasicType *)(enumDecl->base) && ((BasicType *)(enumDecl->base))->isWholeNumber() ) {
288 if ( obj->get_init() ) {
289 obj->get_init()->accept( *visitor );
290 last_val = ((ConstantExpr *)(((SingleInit *)(obj->init))->value))->constant.get_ival();
291 } else {
292 output << ++last_val;
293 } // if
[4390fb6]294 } else {
[30d91e4]295 if ( obj->get_init() ) {
[b99fd56]296 obj->get_init()->accept( *visitor );
[4390fb6]297 } else {
[30d91e4]298 // Should not reach here!
[4390fb6]299 }
[30d91e4]300 }
[4390fb6]301 output << ";" << endl;
[51587aa]302 } // for
[4390fb6]303 } else {
304 output << "enum ";
305 genAttributes( enumDecl->get_attributes() );
306
307 output << enumDecl->get_name();
308
309 if ( ! memb.empty() ) {
310 output << " {" << endl;
311
312 ++indent;
313 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
314 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
315 assert( obj );
316 output << indent << mangleName( obj );
317 if ( obj->get_init() ) {
318 output << " = ";
319 obj->get_init()->accept( *visitor );
320 } // if
321 output << "," << endl;
322 } // for
[f7cb0bc]323 --indent;
[cda48b6]324 output << indent << "}";
[4390fb6]325 } // if
[51587aa]326 } // if
327 }
[71f4e4f]328
[9857e8d]329 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]330 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]331 extension( traitDecl );
332 handleAggregate( traitDecl, "trait " );
333 }
[71f4e4f]334
[9857e8d]335 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]336 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]337 output << "typedef ";
[42a36d9]338 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]339 }
[71f4e4f]340
[9857e8d]341 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]342 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]343 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]344 if ( typeDecl->sized ) {
[ab4bff5]345 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]346 }
[ab4bff5]347 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]348 output << " | { ";
[ab4bff5]349 for ( DeclarationWithType * assert : typeDecl->assertions ) {
350 assert->accept( *visitor );
351 output << "; ";
352 }
[a0c7dc36]353 output << " }";
[e39241b]354 }
[51587aa]355 }
356
[92fea32]357 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
358 output << "_Static_assert(";
359 assertDecl->condition->accept( *visitor );
360 output << ", ";
361 assertDecl->message->accept( *visitor );
362 output << ")";
363 }
364
[9857e8d]365 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]366 std::list< Expression * > designators = designation->get_designators();
[e45215c]367 if ( designators.size() == 0 ) return;
[e4d829b]368 for ( Expression * des : designators ) {
[62423350]369 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
370 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
371 output << ".";
[9857e8d]372 des->accept( *visitor );
[e4d829b]373 } else {
[3e54399]374 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]375 output << "[";
[9857e8d]376 des->accept( *visitor );
[62423350]377 output << "]";
[3778cb2]378 } // if
379 } // for
[3eb1653]380 output << " = ";
[e45215c]381 }
382
[9857e8d]383 void CodeGenerator::postvisit( SingleInit * init ) {
384 init->get_value()->accept( *visitor );
[51587aa]385 }
386
[9857e8d]387 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]388 auto initBegin = init->begin();
389 auto initEnd = init->end();
390 auto desigBegin = init->get_designations().begin();
391 auto desigEnd = init->get_designations().end();
392
[6c4ff37]393 output << "{ ";
[e4d829b]394 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]395 (*desigBegin)->accept( *visitor );
396 (*initBegin)->accept( *visitor );
[e4d829b]397 ++initBegin, ++desigBegin;
398 if ( initBegin != initEnd ) {
399 output << ", ";
400 }
401 }
[6c4ff37]402 output << " }";
[e4d829b]403 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]404 }
405
[d22e90f]406 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]407 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]408 // pseudo-output for constructor/destructor pairs
[d22e90f]409 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]410 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]411 output << ", " << endl << indent << "dtor: ";
[9857e8d]412 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]413 output << endl << --indent << "}";
[fc638d2]414 }
415
[9857e8d]416 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]417 output << constant->get_value();
[51587aa]418 }
419
[4810867]420 // *** Expressions
[9857e8d]421 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]422 extension( applicationExpr );
[8688ce1]423 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]424 const OperatorInfo * opInfo;
425 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]426 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]427 switch ( opInfo->type ) {
[51587aa]428 case OT_INDEX:
429 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]430 (*arg++)->accept( *visitor );
[6c4ff37]431 output << "[";
[9857e8d]432 (*arg)->accept( *visitor );
[6c4ff37]433 output << "]";
[51587aa]434 break;
[71f4e4f]435
[51587aa]436 case OT_CALL:
[356189a]437 // there are no intrinsic definitions of the function call operator
[51587aa]438 assert( false );
439 break;
[71f4e4f]440
[f1e012b]441 case OT_CTOR:
[c2ce2350]442 case OT_DTOR:
[356189a]443 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]444 // the expression fed into a single parameter constructor or destructor may contain side
445 // effects, so must still output this expression
[64071c2]446 output << "(";
[9857e8d]447 (*arg++)->accept( *visitor );
[60a8062]448 output << ") /* " << opInfo->inputName << " */";
[356189a]449 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]450 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]451 output << "(";
[9857e8d]452 (*arg++)->accept( *visitor );
[60a8062]453 output << opInfo->symbol;
[9857e8d]454 (*arg)->accept( *visitor );
[60a8062]455 output << ") /* " << opInfo->inputName << " */";
[356189a]456 } else {
[c2ce2350]457 // no constructors with 0 or more than 2 parameters
[356189a]458 assert( false );
[8688ce1]459 } // if
[356189a]460 break;
[f1e012b]461
[51587aa]462 case OT_PREFIX:
463 case OT_PREFIXASSIGN:
464 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]465 output << "(";
[60a8062]466 output << opInfo->symbol;
[9857e8d]467 (*arg)->accept( *visitor );
[6c4ff37]468 output << ")";
[51587aa]469 break;
[71f4e4f]470
[51587aa]471 case OT_POSTFIX:
472 case OT_POSTFIXASSIGN:
473 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]474 (*arg)->accept( *visitor );
[60a8062]475 output << opInfo->symbol;
[51587aa]476 break;
477
[f1e012b]478
[51587aa]479 case OT_INFIX:
480 case OT_INFIXASSIGN:
481 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]482 output << "(";
[9857e8d]483 (*arg++)->accept( *visitor );
[60a8062]484 output << opInfo->symbol;
[9857e8d]485 (*arg)->accept( *visitor );
[6c4ff37]486 output << ")";
[51587aa]487 break;
[71f4e4f]488
[51587aa]489 case OT_CONSTANT:
[721f17a]490 case OT_LABELADDRESS:
491 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]492 assert( false );
[3778cb2]493 } // switch
[17cd4eb]494 } else {
[9857e8d]495 varExpr->accept( *visitor );
[6c4ff37]496 output << "(";
[51587aa]497 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]498 output << ")";
[17cd4eb]499 } // if
[51587aa]500 } else {
[9857e8d]501 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]502 output << "(";
[51587aa]503 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]504 output << ")";
[51587aa]505 } // if
506 }
[71f4e4f]507
[9857e8d]508 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]509 extension( untypedExpr );
[22bc276]510 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]511 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
512 if ( opInfo ) {
[22bc276]513 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]514 switch ( opInfo->type ) {
[51587aa]515 case OT_INDEX:
[22bc276]516 assert( untypedExpr->args.size() == 2 );
[9857e8d]517 (*arg++)->accept( *visitor );
[6c4ff37]518 output << "[";
[9857e8d]519 (*arg)->accept( *visitor );
[6c4ff37]520 output << "]";
[51587aa]521 break;
[71f4e4f]522
[51587aa]523 case OT_CALL:
[f1e012b]524 assert( false );
525
[c2ce2350]526 case OT_CTOR:
527 case OT_DTOR:
[22bc276]528 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]529 // the expression fed into a single parameter constructor or destructor may contain side
530 // effects, so must still output this expression
[64071c2]531 output << "(";
[9857e8d]532 (*arg++)->accept( *visitor );
[60a8062]533 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]534 } else if ( untypedExpr->get_args().size() == 2 ) {
535 // intrinsic two parameter constructors are essentially bitwise assignment
536 output << "(";
[9857e8d]537 (*arg++)->accept( *visitor );
[60a8062]538 output << opInfo->symbol;
[9857e8d]539 (*arg)->accept( *visitor );
[60a8062]540 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]541 } else {
542 // no constructors with 0 or more than 2 parameters
[42a36d9]543 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]544 output << "(";
545 (*arg++)->accept( *visitor );
[60a8062]546 output << opInfo->symbol << "{ ";
[22bc276]547 genCommaList( arg, untypedExpr->args.end() );
[60a8062]548 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]549 } // if
[51587aa]550 break;
[71f4e4f]551
[51587aa]552 case OT_PREFIX:
553 case OT_PREFIXASSIGN:
[de62360d]554 case OT_LABELADDRESS:
[22bc276]555 assert( untypedExpr->args.size() == 1 );
[6c4ff37]556 output << "(";
[60a8062]557 output << opInfo->symbol;
[9857e8d]558 (*arg)->accept( *visitor );
[6c4ff37]559 output << ")";
[51587aa]560 break;
[71f4e4f]561
[51587aa]562 case OT_POSTFIX:
563 case OT_POSTFIXASSIGN:
[22bc276]564 assert( untypedExpr->args.size() == 1 );
[9857e8d]565 (*arg)->accept( *visitor );
[60a8062]566 output << opInfo->symbol;
[51587aa]567 break;
[71f4e4f]568
[51587aa]569 case OT_INFIX:
570 case OT_INFIXASSIGN:
[22bc276]571 assert( untypedExpr->args.size() == 2 );
[6c4ff37]572 output << "(";
[9857e8d]573 (*arg++)->accept( *visitor );
[60a8062]574 output << opInfo->symbol;
[9857e8d]575 (*arg)->accept( *visitor );
[6c4ff37]576 output << ")";
[51587aa]577 break;
[71f4e4f]578
[51587aa]579 case OT_CONSTANT:
580 // there are no intrinsic definitions of 0 or 1 as functions
581 assert( false );
[3778cb2]582 } // switch
[51587aa]583 } else {
[22bc276]584 // builtin routines
585 nameExpr->accept( *visitor );
586 output << "(";
587 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
588 output << ")";
[51587aa]589 } // if
590 } else {
[22bc276]591 untypedExpr->function->accept( *visitor );
[6c4ff37]592 output << "(";
[22bc276]593 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]594 output << ")";
[51587aa]595 } // if
596 }
[71f4e4f]597
[9857e8d]598 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]599 rangeExpr->low->accept( *visitor );
[064e3ff]600 output << " ... ";
[22bc276]601 rangeExpr->high->accept( *visitor );
[064e3ff]602 }
603
[9857e8d]604 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]605 extension( nameExpr );
[60a8062]606 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
607 if ( opInfo ) {
608 if ( opInfo->type == OT_CONSTANT ) {
609 output << opInfo->symbol;
[5ea7a22]610 } else {
[60a8062]611 output << opInfo->outputName;
[5ea7a22]612 }
[51587aa]613 } else {
[6c4ff37]614 output << nameExpr->get_name();
[51587aa]615 } // if
616 }
[71f4e4f]617
[6e50a6b]618 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
619 extension( dimensionExpr );
620 output << "/*non-type*/" << dimensionExpr->get_name();
621 }
622
[9857e8d]623 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]624 extension( addressExpr );
[6c4ff37]625 output << "(&";
[9857e8d]626 addressExpr->arg->accept( *visitor );
[6c4ff37]627 output << ")";
[51587aa]628 }
629
[9857e8d]630 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]631 extension( addressExpr );
632 output << "(&&" << addressExpr->arg << ")";
633 }
634
[9857e8d]635 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]636 extension( castExpr );
[803deb1]637 output << "(";
[906e24d]638 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]639 output << "(void)";
[d104b02]640 } else {
641 // at least one result type of cast.
642 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
643 // an lvalue cast, this has been taken out.
[803deb1]644 output << "(";
[42a36d9]645 output << genType( castExpr->get_result(), "", options );
[71f4e4f]646 output << ")";
[3778cb2]647 } // if
[da9d79b]648 castExpr->arg->accept( *visitor );
649 output << ")";
650 }
651
652 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]653 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]654 extension( castExpr );
655 output << "((" << castExpr->targetString() << " &)";
656 castExpr->arg->accept( *visitor );
[803deb1]657 output << ")";
[51587aa]658 }
[71f4e4f]659
[9857e8d]660 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]661 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]662 extension( castExpr );
663 output << "(virtual ";
[9857e8d]664 castExpr->get_arg()->accept( *visitor );
[a5f0529]665 output << ")";
666 }
667
[9857e8d]668 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]669 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]670 extension( memberExpr );
[9857e8d]671 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]672 output << ".";
[9857e8d]673 memberExpr->get_member()->accept( *visitor );
[51587aa]674 }
[71f4e4f]675
[9857e8d]676 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]677 extension( memberExpr );
[9857e8d]678 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]679 output << "." << mangleName( memberExpr->get_member() );
[51587aa]680 }
[71f4e4f]681
[9857e8d]682 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]683 extension( variableExpr );
[60a8062]684 const OperatorInfo * opInfo;
[b99fd56]685 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
686 output << "0";
687 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]688 output << opInfo->symbol;
[51587aa]689 } else {
[b99fd56]690 // if (dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())
[4390fb6]691 // && dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base) {
692 // output << '(' <<genType(dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base, "", options) << ')';
693 // }
[6c4ff37]694 output << mangleName( variableExpr->get_var() );
[51587aa]695 } // if
696 }
[71f4e4f]697
[9857e8d]698 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]699 assert( constantExpr->get_constant() );
[e04ef3a]700 extension( constantExpr );
[9857e8d]701 constantExpr->get_constant()->accept( *visitor );
[51587aa]702 }
[71f4e4f]703
[9857e8d]704 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]705 extension( sizeofExpr );
[6c4ff37]706 output << "sizeof(";
[51587aa]707 if ( sizeofExpr->get_isType() ) {
[42a36d9]708 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]709 } else {
[9857e8d]710 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]711 } // if
[6c4ff37]712 output << ")";
[51587aa]713 }
[47534159]714
[9857e8d]715 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]716 // use GCC extension to avoid bumping std to C11
[8e9cbb2]717 extension( alignofExpr );
[47534159]718 output << "__alignof__(";
[25a054f]719 if ( alignofExpr->get_isType() ) {
[42a36d9]720 output << genType( alignofExpr->get_type(), "", options );
[47534159]721 } else {
[9857e8d]722 alignofExpr->get_expr()->accept( *visitor );
[47534159]723 } // if
724 output << ")";
725 }
[71f4e4f]726
[9857e8d]727 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]728 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]729 output << "offsetof(";
[42a36d9]730 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]731 output << ", " << offsetofExpr->get_member();
732 output << ")";
[2a4b088]733 }
734
[9857e8d]735 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]736 // use GCC builtin
737 output << "__builtin_offsetof(";
[42a36d9]738 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]739 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]740 output << ")";
741 }
[d63eeb0]742
[9857e8d]743 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]744 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
745 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]746 }
[70a06f6]747
[9857e8d]748 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]749 extension( logicalExpr );
[6c4ff37]750 output << "(";
[9857e8d]751 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]752 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]753 output << " && ";
[51587aa]754 } else {
[6c4ff37]755 output << " || ";
[51587aa]756 } // if
[9857e8d]757 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]758 output << ")";
[51587aa]759 }
[71f4e4f]760
[9857e8d]761 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]762 extension( conditionalExpr );
[6c4ff37]763 output << "(";
[9857e8d]764 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]765 output << " ? ";
[9857e8d]766 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]767 output << " : ";
[9857e8d]768 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]769 output << ")";
[51587aa]770 }
[71f4e4f]771
[9857e8d]772 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]773 extension( commaExpr );
[6c4ff37]774 output << "(";
[42a36d9]775 if ( options.genC ) {
[8a6cf7e]776 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
777 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
778 }
[9857e8d]779 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]780 output << " , ";
[9857e8d]781 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]782 output << ")";
[51587aa]783 }
[71f4e4f]784
[9857e8d]785 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]786 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]787 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]788 }
789
[9857e8d]790 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]791 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]792 extension( tupleExpr );
[e39241b]793 output << "[";
794 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
795 output << "]";
796 }
[907eccb]797
[9857e8d]798 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]799 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]800 extension( tupleExpr );
[e39241b]801 output << "[";
802 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
803 output << "]";
804 }
[71f4e4f]805
[9857e8d]806 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]807 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]808 extension( tupleExpr );
[9857e8d]809 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]810 output << "." << tupleExpr->get_index();
811 }
812
[9857e8d]813 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]814 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
815 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
816 if ( ! options.genC ) {
817 output << genType( typeExpr->get_type(), "", options );
[e4d829b]818 }
[e39241b]819 }
[2b6c1e0]820
[9857e8d]821 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]822 if ( !asmExpr->inout.empty() ) {
[7f5566b]823 output << "[ ";
[665f432]824 output << asmExpr->inout;
[7f5566b]825 output << " ] ";
826 } // if
[665f432]827 asmExpr->constraint->accept( *visitor );
[7f5566b]828 output << " ( ";
[665f432]829 asmExpr->operand->accept( *visitor );
[7f5566b]830 output << " )";
831 }
832
[9857e8d]833 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]834 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]835 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]836 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]837 }
838
[9857e8d]839 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]840 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]841 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]842 unqExpr->get_expr()->accept( *visitor );
[d104b02]843 output << " }";
844 }
845
[9857e8d]846 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]847 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]848 output << "({" << endl;
[f7cb0bc]849 ++indent;
[3c13c03]850 unsigned int numStmts = stmts.size();
851 unsigned int i = 0;
852 for ( Statement * stmt : stmts ) {
[058f549]853 output << indent << printLabels( stmt->get_labels() );
[3c13c03]854 if ( i+1 == numStmts ) {
855 // last statement in a statement expression needs to be handled specially -
856 // cannot cast to void, otherwise the expression statement has no value
857 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]858 exprStmt->expr->accept( *visitor );
[3c13c03]859 output << ";" << endl;
860 ++i;
861 break;
862 }
863 }
[9857e8d]864 stmt->accept( *visitor );
[3c13c03]865 output << endl;
866 if ( wantSpacing( stmt ) ) {
867 output << endl;
868 } // if
869 ++i;
870 }
[f7cb0bc]871 --indent;
[3c13c03]872 output << indent << "})";
[6eb8948]873 }
874
[4e8949f]875 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]876 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]877 expr->callExpr->accept( *visitor );
878 }
879
[44b4114]880 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]881 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]882 expr->expr->accept( *visitor );
883 }
884
[0f79853]885 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]886 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]887 arg->expr->accept( *visitor );
888 }
889
[d807ca28]890 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]891 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]892 output << "_Generic(";
893 expr->control->accept( *visitor );
894 output << ", ";
895 unsigned int numAssocs = expr->associations.size();
896 unsigned int i = 0;
897 for ( GenericExpr::Association & assoc : expr->associations ) {
898 if (assoc.isDefault) {
899 output << "default: ";
900 } else {
[42a36d9]901 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]902 }
903 assoc.expr->accept( *visitor );
904 if ( i+1 != numAssocs ) {
905 output << ", ";
906 }
907 i++;
908 }
909 output << ")";
910 }
911
912
[4810867]913 // *** Statements
[9857e8d]914 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]915 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]916 output << "{" << endl;
[51587aa]917
[f7cb0bc]918 ++indent;
[51587aa]919
[7f5566b]920 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]921 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]922 (*i)->accept( *visitor );
[2b6c1e0]923
[6c4ff37]924 output << endl;
[2b6c1e0]925 if ( wantSpacing( *i ) ) {
926 output << endl;
[3778cb2]927 } // if
[8688ce1]928 } // for
[f7cb0bc]929 --indent;
[51587aa]930
[cda48b6]931 output << indent << "}";
[51587aa]932 }
933
[9857e8d]934 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]935 assert( exprStmt );
[42a36d9]936 if ( options.genC ) {
[262f085f]937 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]938 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]939 }
[9857e8d]940 exprStmt->get_expr()->accept( *visitor );
[3eb1653]941 output << ";";
[51587aa]942 }
943
[9857e8d]944 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]945 output << "asm ";
946 if ( asmStmt->get_voltile() ) output << "volatile ";
947 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
948 output << "( ";
[9857e8d]949 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]950 output << " : ";
951 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
952 output << " : ";
953 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
954 output << " : ";
955 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
956 if ( ! asmStmt->get_gotolabels().empty() ) {
957 output << " : ";
958 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
959 output << *begin++;
960 if ( begin == asmStmt->get_gotolabels().end() ) break;
961 output << ", ";
962 } // for
963 } // if
[d7312ac]964 output << " );";
[7f5566b]965 }
966
[9857e8d]967 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]968 output << "asm ";
969 AsmStmt * asmStmt = asmDecl->get_stmt();
970 output << "( ";
[9857e8d]971 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]972 output << " )";
[e994912]973 }
974
[2d019af]975 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
976 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
977 }
978
[cc32d83]979 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]980 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]981 }
982
[9857e8d]983 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]984 output << "if ( ";
[9857e8d]985 ifStmt->get_condition()->accept( *visitor );
[7f5566b]986 output << " ) ";
[51587aa]987
[3b0bc16]988 ifStmt->get_then()->accept( *visitor );
[51587aa]989
[3b0bc16]990 if ( ifStmt->get_else() != 0) {
[2b6c1e0]991 output << " else ";
[3b0bc16]992 ifStmt->get_else()->accept( *visitor );
[51587aa]993 } // if
994 }
995
[9857e8d]996 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]997 output << "switch ( ";
[9857e8d]998 switchStmt->get_condition()->accept( *visitor );
[7f5566b]999 output << " ) ";
[71f4e4f]1000
[d22e90f]1001 output << "{" << endl;
[f7cb0bc]1002 ++indent;
[9857e8d]1003 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1004 --indent;
[cda48b6]1005 output << indent << "}";
[51587aa]1006 }
1007
[9857e8d]1008 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1009 updateLocation( caseStmt );
[1dcd9554]1010 output << indent;
[eb3261f]1011 if ( caseStmt->isDefault()) {
[2b6c1e0]1012 output << "default";
[eb3261f]1013 } else {
[2b6c1e0]1014 output << "case ";
[9857e8d]1015 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1016 } // if
[d22e90f]1017 output << ":" << endl;
[71f4e4f]1018
[51587aa]1019 std::list<Statement *> sts = caseStmt->get_statements();
1020
[f7cb0bc]1021 ++indent;
[51587aa]1022 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1023 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1024 (*i)->accept( *visitor );
[6c4ff37]1025 output << endl;
[3778cb2]1026 } // for
[f7cb0bc]1027 --indent;
[51587aa]1028 }
1029
[9857e8d]1030 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1031 switch ( branchStmt->get_type()) {
1032 case BranchStmt::Goto:
1033 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1034 output << "goto " << branchStmt->get_target();
[71f4e4f]1035 else {
[51587aa]1036 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1037 output << "goto *";
[9857e8d]1038 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1039 } // if
1040 } // if
1041 break;
1042 case BranchStmt::Break:
[6c4ff37]1043 output << "break";
[51587aa]1044 break;
1045 case BranchStmt::Continue:
[6c4ff37]1046 output << "continue";
[51587aa]1047 break;
[7c2a7b6]1048 case BranchStmt::FallThrough:
1049 case BranchStmt::FallThroughDefault:
[42a36d9]1050 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1051 output << "fallthru";
[7c2a7b6]1052 break;
[6180274]1053 default: ; // prevent warning
[3778cb2]1054 } // switch
[7c2a7b6]1055 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1056 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1057 if ( ! branchStmt->get_target().empty() ) {
1058 output << " " << branchStmt->get_target();
1059 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1060 output << " default";
1061 }
1062 }
[2b6c1e0]1063 output << ";";
[51587aa]1064 }
1065
[9857e8d]1066 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1067 output << "return ";
[9857e8d]1068 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1069 output << ";";
[51587aa]1070 }
1071
[9857e8d]1072 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1073 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1074
1075 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1076 "throw" : "throwResume");
[daf1af8]1077 if (throwStmt->get_expr()) {
1078 output << " ";
[9857e8d]1079 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1080 }
1081 if (throwStmt->get_target()) {
1082 output << " _At ";
[9857e8d]1083 throwStmt->get_target()->accept( *visitor );
[daf1af8]1084 }
1085 output << ";";
1086 }
[e4ea10b7]1087 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1088 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1089
1090 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1091 "catch" : "catchResume");
[e4ea10b7]1092 output << "( ";
1093 stmt->decl->accept( *visitor );
1094 output << " ) ";
1095
1096 if( stmt->cond ) {
1097 output << "if/when(?) (";
1098 stmt->cond->accept( *visitor );
1099 output << ") ";
1100 }
1101 stmt->body->accept( *visitor );
1102 }
1103
1104 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1105 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1106
1107 bool first = true;
1108 for( auto & clause : stmt->clauses ) {
1109 if(first) { output << "or "; first = false; }
1110 if( clause.condition ) {
1111 output << "when(";
1112 stmt->timeout.condition->accept( *visitor );
1113 output << ") ";
1114 }
1115 output << "waitfor(";
1116 clause.target.function->accept( *visitor );
1117 for( Expression * expr : clause.target.arguments ) {
1118 output << ",";
1119 expr->accept( *visitor );
1120 }
1121 output << ") ";
1122 clause.statement->accept( *visitor );
1123 }
1124
1125 if( stmt->timeout.statement ) {
1126 output << "or ";
1127 if( stmt->timeout.condition ) {
1128 output << "when(";
1129 stmt->timeout.condition->accept( *visitor );
1130 output << ") ";
1131 }
1132 output << "timeout(";
1133 stmt->timeout.time->accept( *visitor );
1134 output << ") ";
1135 stmt->timeout.statement->accept( *visitor );
1136 }
1137
1138 if( stmt->orelse.statement ) {
1139 output << "or ";
1140 if( stmt->orelse.condition ) {
1141 output << "when(";
1142 stmt->orelse.condition->accept( *visitor );
1143 output << ")";
1144 }
1145 output << "else ";
1146 stmt->orelse.statement->accept( *visitor );
1147 }
1148 }
1149
[55d6e8de]1150 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1151 if ( ! options.genC ) {
[55d6e8de]1152 output << "with ( ";
1153 genCommaList( with->exprs.begin(), with->exprs.end() );
1154 output << " ) ";
1155 }
1156 with->stmt->accept( *visitor );
1157 }
[daf1af8]1158
[3b0bc16]1159 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1160 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1161 output << "do";
[321a2481]1162 } else {
[d7312ac]1163 output << "while (";
[3b0bc16]1164 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1165 output << ")";
[51587aa]1166 } // if
[2b6c1e0]1167 output << " ";
[51587aa]1168
[3b0bc16]1169 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1170 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1171
[cda48b6]1172 output << indent;
[51587aa]1173
[3b0bc16]1174 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1175 output << " while (";
[3b0bc16]1176 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1177 output << ");";
[51587aa]1178 } // if
1179 }
1180
[9857e8d]1181 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1182 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1183 output << "for (;";
[51587aa]1184
[321a2481]1185 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1186 forStmt->get_condition()->accept( *visitor );
[3778cb2]1187 } // if
[6c4ff37]1188 output << ";";
[51587aa]1189
[321a2481]1190 if ( forStmt->get_increment() != 0 ) {
1191 // cast the top-level expression to void to reduce gcc warnings.
1192 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1193 expr->accept( *visitor );
[3778cb2]1194 } // if
[2b6c1e0]1195 output << ") ";
[51587aa]1196
1197 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1198 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1199 forStmt->get_body()->accept( *visitor );
[51587aa]1200 } // if
1201 }
1202
[9857e8d]1203 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1204 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1205 output << "/* null statement */ ;";
[51587aa]1206 }
1207
[9857e8d]1208 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1209 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1210
[51587aa]1211 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1212 output << ";";
[51587aa]1213 } // if
1214 }
1215
[9857e8d]1216 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1217 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1218 stmt->callStmt->accept( *visitor );
1219 }
1220
[6cebfef]1221 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1222 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1223 stmt->stmt->accept( *visitor );
1224 }
1225
[dd020c0]1226 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1227 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1228 decl->get_storageClasses().print( output );
[a7c90d4]1229 } // if
[dd020c0]1230 } // CodeGenerator::handleStorageClass
[9facf3b]1231
1232 std::string genName( DeclarationWithType * decl ) {
[60a8062]1233 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1234 if ( opInfo ) {
1235 return opInfo->outputName;
[9facf3b]1236 } else {
1237 return decl->get_name();
1238 } // if
1239 }
[51b73452]1240} // namespace CodeGen
[51587aa]1241
1242// Local Variables: //
1243// tab-width: 4 //
1244// mode: c++ //
1245// compile-command: "make install" //
1246// End: //
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