source: src/CodeGen/CodeGenerator.cc@ 28f8f15

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[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
[1931bb01]11// Last Modified By : Andrew Beach
12// Last Modified On : Wed Jun 29 14:34:00 2022
13// Update Count : 542
[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...
[9feb34b]19#include <sstream> // for stringstream
[51b73452]20
[1931bb01]21#include "AST/Decl.hpp" // for DeclWithType
[bf2438c]22#include "Common/UniqueName.h" // for UniqueName
23#include "GenType.h" // for genType
24#include "InitTweak/InitTweak.h" // for getPointerBase
25#include "OperatorTable.h" // for OperatorInfo, operatorLookup
[07de76b]26#include "SynTree/LinkageSpec.h" // for Spec, Intrinsic
[bf2438c]27#include "SynTree/Attribute.h" // for Attribute
28#include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode
29#include "SynTree/Constant.h" // for Constant
30#include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl
31#include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica...
32#include "SynTree/Initializer.h" // for Initializer, ListInit, Designation
33#include "SynTree/Label.h" // for Label, operator<<
34#include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt
35#include "SynTree/Type.h" // for Type, Type::StorageClasses, Func...
[10a7775]36
[51b73452]37using namespace std;
38
39namespace CodeGen {
[6c4ff37]40 int CodeGenerator::tabsize = 4;
[51587aa]41
[60a8062]42 // The kinds of statements that would ideally be followed by whitespace.
[2b6c1e0]43 bool wantSpacing( Statement * stmt) {
44 return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) ||
[3b0bc16]45 dynamic_cast< WhileDoStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt );
[2b6c1e0]46 }
47
[8688ce1]48 void CodeGenerator::extension( Expression * expr ) {
[8e9cbb2]49 if ( expr->get_extension() ) {
50 output << "__extension__ ";
51 } // if
52 } // extension
53
[8688ce1]54 void CodeGenerator::extension( Declaration * decl ) {
[8e9cbb2]55 if ( decl->get_extension() ) {
56 output << "__extension__ ";
57 } // if
58 } // extension
59
[58dd019]60 void CodeGenerator::asmName( DeclarationWithType * decl ) {
[e612146c]61 if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) {
[58dd019]62 output << " asm ( " << asmName->get_constant()->get_value() << " )";
63 } // if
64 } // extension
65
[888cbe4]66 CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) {
67 labels = &l;
68 return *this;
69 }
70
[8688ce1]71 ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) {
[888cbe4]72 std::list< Label > & labs = *printLabels.labels;
73 // l.unique(); // assumes a sorted list. Why not use set? Does order matter?
74 for ( Label & l : labs ) {
75 output << l.get_name() + ": ";
76 printLabels.cg.genAttributes( l.get_attributes() );
[8688ce1]77 } // for
[888cbe4]78 return output;
79 }
80
[60a8062]81 // Using updateLocation at the beginning of a node and endl within a node should become the method of formating.
[8bafacc]82 void CodeGenerator::updateLocation( CodeLocation const & to ) {
[d22e90f]83 // skip if linemarks shouldn't appear or if codelocation is unset
[42a36d9]84 if ( !options.lineMarks || to.isUnset() ) return;
[d22e90f]85
86 if ( currentLocation.followedBy( to, 0 ) ) {
[8bafacc]87 return;
88 } else if ( currentLocation.followedBy( to, 1 ) ) {
89 output << "\n" << indent;
[d48e529]90 currentLocation.first_line += 1;
[8bafacc]91 } else if ( currentLocation.followedBy( to, 2 ) ) {
92 output << "\n\n" << indent;
[d48e529]93 currentLocation.first_line += 2;
[8bafacc]94 } else {
[d48e529]95 output << "\n# " << to.first_line << " \"" << to.filename
[60a8062]96 << "\"\n" << indent;
[8bafacc]97 currentLocation = to;
98 }
99 output << std::flush;
100 }
[c850687]101
[8bafacc]102 void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) {
103 updateLocation( to->location );
[c850687]104 }
105
[d22e90f]106 // replace endl
107 ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const {
108 // if ( !cg.lineMarks ) {
109 // os << "\n" << cg.indent << std::flush;
110 // }
111 os << "\n" << std::flush;
112 cg.currentLocation.first_line++;
113 // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/";
114 return os;
[c850687]115 }
116
[4e5e6cc]117 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 ) {}
118 CodeGenerator::CodeGenerator( std::ostream & os, const Options &options ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options(options), endl( *this ) {}
[cda48b6]119
[486341f]120 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]121 // GCC builtins should always be printed unmangled
[42a36d9]122 if ( options.pretty || decl->linkage.is_gcc_builtin ) return decl->name;
[16ba4a6f]123 if ( LinkageSpec::isMangled(decl->linkage) && decl->mangleName != "" ) {
[f326f99]124 // need to incorporate scope level in order to differentiate names for destructors
125 return decl->get_scopedMangleName();
[51587aa]126 } else {
[13073be]127 return decl->name;
[51587aa]128 } // if
129 }
[94b4364]130
[44a81853]131 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
[60a8062]132 if ( attributes.empty() ) return;
[44a81853]133 output << "__attribute__ ((";
134 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]135 output << (*attr)->name;
136 if ( ! (*attr)->parameters.empty() ) {
[44a81853]137 output << "(";
[85b2300]138 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]139 output << ")";
140 } // if
[60a8062]141 if ( ++attr == attributes.end() ) break;
[44a81853]142 output << ","; // separator
143 } // for
144 output << ")) ";
145 } // CodeGenerator::genAttributes
[7baed7d]146
[9857e8d]147 // *** BaseSyntaxNode
[d22e90f]148 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]149 // turn off automatic recursion for all nodes, to allow each visitor to
150 // precisely control the order in which its children are visited.
151 visit_children = false;
[d22e90f]152 updateLocation( node );
[9857e8d]153 }
154
155 // *** BaseSyntaxNode
156 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
157 std::stringstream ss;
158 node->print( ss );
159 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
160 }
[7baed7d]161
[5f08961d]162 // *** Expression
163 void CodeGenerator::previsit( Expression * node ) {
164 previsit( (BaseSyntaxNode *)node );
165 GuardAction( [this, node](){
[60a8062]166 if ( options.printExprTypes && node->result ) {
167 output << " /* " << genType( node->result, "", options ) << " */ ";
168 }
169 } );
[5f08961d]170 }
171
[4810867]172 // *** Declarations
[9857e8d]173 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]174 // deleted decls should never be used, so don't print them
[42a36d9]175 if ( functionDecl->isDeleted && options.genC ) return;
[8e9cbb2]176 extension( functionDecl );
[7baed7d]177 genAttributes( functionDecl->get_attributes() );
178
[51587aa]179 handleStorageClass( functionDecl );
[6e8bd43]180 functionDecl->get_funcSpec().print( output );
[dd020c0]181
[da09ba1]182 Options subOptions = options;
[76f7fc7]183 subOptions.anonymousUnused = functionDecl->has_body();
[da09ba1]184 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), subOptions );
[51587aa]185
[58dd019]186 asmName( functionDecl );
187
[51587aa]188 if ( functionDecl->get_statements() ) {
[9857e8d]189 functionDecl->get_statements()->accept( *visitor );
[51587aa]190 } // if
[3ed994e]191 if ( functionDecl->isDeleted ) {
192 output << " = void";
193 }
[51587aa]194 }
195
[9857e8d]196 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]197 // deleted decls should never be used, so don't print them
[42a36d9]198 if ( objectDecl->isDeleted && options.genC ) return;
[de8d7fb1]199
200 // gcc allows an empty declarator (no name) for bit-fields and C states: 6.7.2.1 Structure and union specifiers,
201 // point 4, page 113: If the (bit field) value is zero, the declaration shall have no declarator. For anything
202 // else, the anonymous name refers to the anonymous object for plan9 inheritance.
203 if ( objectDecl->get_name().empty() && options.genC && ! objectDecl->get_bitfieldWidth() ) {
[e39241b]204 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]205 static UniqueName name = { "__anonymous_object" };
206 objectDecl->set_name( name.newName() );
[de8d7fb1]207 // Stops unused parameter warnings.
208 if ( options.anonymousUnused ) {
209 objectDecl->attributes.push_back( new Attribute( "unused" ) );
210 }
[d9c8a59]211 }
212
[8e9cbb2]213 extension( objectDecl );
[f9cebb5]214 genAttributes( objectDecl->get_attributes() );
215
[51587aa]216 handleStorageClass( objectDecl );
[42a36d9]217 output << genType( objectDecl->get_type(), mangleName( objectDecl ), options.pretty, options.genC );
[71f4e4f]218
[58dd019]219 asmName( objectDecl );
220
[51587aa]221 if ( objectDecl->get_init() ) {
[6c4ff37]222 output << " = ";
[9857e8d]223 objectDecl->get_init()->accept( *visitor );
[51587aa]224 } // if
[3ed994e]225 if ( objectDecl->isDeleted ) {
226 output << " = void";
227 }
[3778cb2]228
[51587aa]229 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]230 output << ":";
[9857e8d]231 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]232 } // if
233 }
234
[5f642e38]235 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[42a36d9]236 if( ! aggDecl->parameters.empty() && ! options.genC ) {
[e39241b]237 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
238 output << "forall(";
[0b3b2ae]239 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]240 output << ")" << endl;
[e6cee92]241 output << indent;
[e39241b]242 }
243
[593370c]244 output << kind;
[0b3b2ae]245 genAttributes( aggDecl->attributes );
246 output << aggDecl->name;
[71f4e4f]247
[2c57025]248 if ( aggDecl->has_body() ) {
[0b3b2ae]249 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]250 output << " {" << endl;
[51587aa]251
[f7cb0bc]252 ++indent;
[3778cb2]253 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]254 output << indent;
[9857e8d]255 (*i)->accept( *visitor );
[6c4ff37]256 output << ";" << endl;
[3778cb2]257 } // for
[51587aa]258
[f7cb0bc]259 --indent;
[51587aa]260
[cda48b6]261 output << indent << "}";
[17cd4eb]262 } // if
[51587aa]263 }
[17cd4eb]264
[9857e8d]265 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]266 extension( structDecl );
[5f642e38]267 handleAggregate( structDecl, "struct " );
[51587aa]268 }
[17cd4eb]269
[9857e8d]270 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]271 extension( unionDecl );
[5f642e38]272 handleAggregate( unionDecl, "union " );
[51587aa]273 }
[71f4e4f]274
[8bb86ce]275 template<typename pass_type>
276 inline void genEnumInitializer( PassVisitor<pass_type> * visitor, Type * baseType, std::ostream & output,
277 Initializer * init, long long * cur_val, Options options) {
278 auto baseTypeAsBasic = baseType ? dynamic_cast<BasicType *>( baseType ) : nullptr;
279 if ( init ) { // If value has an explicit initiazatior
280 output << " = ";
281 output << "(" << genType(baseType, "", options) << ")";
282 init->accept( *visitor );
283 if ( baseTypeAsBasic && baseTypeAsBasic->isInteger() ) { // if it is an integral type and initilizer offered,
284 // need to update the cur_val
285 Expression* expr = ((SingleInit *)(init))->value;
286 while ( auto temp = dynamic_cast<CastExpr *>(expr) ) { // unwrap introduced cast
287 expr = temp->arg;
288 }
289 *cur_val = ((ConstantExpr *)expr)->constant.get_ival()+1;
290 }
291 } else if ( baseTypeAsBasic && baseTypeAsBasic->isInteger() ) { // integral implicitly init to cur_val + 1
292 output << " = " << "(" << genType(baseType, "", options) << ")";
293 output << (*cur_val)++;
294 }
295 }
296
[28f8f15]297 void CodeGenerator::handleData( EnumDecl * dataDecl ) {
298 output << " /** data type */" << endl;
299 for ( StructDecl * decl : dataDecl->data_constructors ) {
300 postvisit(decl);
301 output << ";" << endl;
302 }
303 postvisit( dataDecl->data_union );
304 output << ";" << endl;
305 postvisit( dataDecl->tags );
306 output << ";" << endl;
307 postvisit( dataDecl->tag_union );
308 output << ";" << endl;
309 }
310
[9857e8d]311 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[28f8f15]312 if ( enumDecl->data_constructors.size() > 0 ) return handleData( enumDecl );
313 extension( enumDecl );
[8e9cbb2]314 std::list< Declaration* > &memb = enumDecl->get_members();
[d8e2a09]315 if (enumDecl->base && ! memb.empty()) {
[8bb86ce]316 long long cur_val = 0;
[51587aa]317 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]318 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]319 assert( obj );
[0bd46fd]320 output << "static ";
[9749d2fa]321 output << genType(enumDecl->base, mangleName( obj ), options);
[8bb86ce]322 genEnumInitializer( visitor, enumDecl->base, output, obj->get_init(), &cur_val, options);
[4390fb6]323 output << ";" << endl;
[51587aa]324 } // for
[4390fb6]325 } else {
326 output << "enum ";
327 genAttributes( enumDecl->get_attributes() );
328
329 output << enumDecl->get_name();
330
331 if ( ! memb.empty() ) {
332 output << " {" << endl;
333
334 ++indent;
335 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
336 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
337 assert( obj );
338 output << indent << mangleName( obj );
339 if ( obj->get_init() ) {
340 output << " = ";
341 obj->get_init()->accept( *visitor );
342 } // if
343 output << "," << endl;
344 } // for
[f7cb0bc]345 --indent;
[cda48b6]346 output << indent << "}";
[4390fb6]347 } // if
[51587aa]348 } // if
349 }
[71f4e4f]350
[9857e8d]351 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]352 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]353 extension( traitDecl );
354 handleAggregate( traitDecl, "trait " );
355 }
[71f4e4f]356
[9857e8d]357 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]358 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]359 output << "typedef ";
[42a36d9]360 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]361 }
[71f4e4f]362
[9857e8d]363 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]364 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]365 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]366 if ( typeDecl->sized ) {
[ab4bff5]367 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]368 }
[ab4bff5]369 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]370 output << " | { ";
[ab4bff5]371 for ( DeclarationWithType * assert : typeDecl->assertions ) {
372 assert->accept( *visitor );
373 output << "; ";
374 }
[a0c7dc36]375 output << " }";
[e39241b]376 }
[51587aa]377 }
378
[92fea32]379 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
380 output << "_Static_assert(";
381 assertDecl->condition->accept( *visitor );
382 output << ", ";
383 assertDecl->message->accept( *visitor );
384 output << ")";
385 }
386
[9857e8d]387 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]388 std::list< Expression * > designators = designation->get_designators();
[e45215c]389 if ( designators.size() == 0 ) return;
[e4d829b]390 for ( Expression * des : designators ) {
[62423350]391 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
392 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
393 output << ".";
[9857e8d]394 des->accept( *visitor );
[e4d829b]395 } else {
[3e54399]396 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]397 output << "[";
[9857e8d]398 des->accept( *visitor );
[62423350]399 output << "]";
[3778cb2]400 } // if
401 } // for
[3eb1653]402 output << " = ";
[e45215c]403 }
404
[9857e8d]405 void CodeGenerator::postvisit( SingleInit * init ) {
406 init->get_value()->accept( *visitor );
[51587aa]407 }
408
[9857e8d]409 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]410 auto initBegin = init->begin();
411 auto initEnd = init->end();
412 auto desigBegin = init->get_designations().begin();
413 auto desigEnd = init->get_designations().end();
414
[6c4ff37]415 output << "{ ";
[e4d829b]416 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]417 (*desigBegin)->accept( *visitor );
418 (*initBegin)->accept( *visitor );
[e4d829b]419 ++initBegin, ++desigBegin;
420 if ( initBegin != initEnd ) {
421 output << ", ";
422 }
423 }
[6c4ff37]424 output << " }";
[e4d829b]425 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]426 }
427
[d22e90f]428 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]429 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]430 // pseudo-output for constructor/destructor pairs
[d22e90f]431 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]432 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]433 output << ", " << endl << indent << "dtor: ";
[9857e8d]434 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]435 output << endl << --indent << "}";
[fc638d2]436 }
437
[9857e8d]438 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]439 output << constant->get_value();
[51587aa]440 }
441
[4810867]442 // *** Expressions
[9857e8d]443 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]444 extension( applicationExpr );
[8688ce1]445 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]446 const OperatorInfo * opInfo;
447 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]448 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]449 switch ( opInfo->type ) {
[51587aa]450 case OT_INDEX:
451 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]452 (*arg++)->accept( *visitor );
[6c4ff37]453 output << "[";
[9857e8d]454 (*arg)->accept( *visitor );
[6c4ff37]455 output << "]";
[51587aa]456 break;
[71f4e4f]457
[51587aa]458 case OT_CALL:
[356189a]459 // there are no intrinsic definitions of the function call operator
[51587aa]460 assert( false );
461 break;
[71f4e4f]462
[f1e012b]463 case OT_CTOR:
[c2ce2350]464 case OT_DTOR:
[356189a]465 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]466 // the expression fed into a single parameter constructor or destructor may contain side
467 // effects, so must still output this expression
[64071c2]468 output << "(";
[9857e8d]469 (*arg++)->accept( *visitor );
[60a8062]470 output << ") /* " << opInfo->inputName << " */";
[356189a]471 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]472 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]473 output << "(";
[9857e8d]474 (*arg++)->accept( *visitor );
[60a8062]475 output << opInfo->symbol;
[9857e8d]476 (*arg)->accept( *visitor );
[60a8062]477 output << ") /* " << opInfo->inputName << " */";
[356189a]478 } else {
[c2ce2350]479 // no constructors with 0 or more than 2 parameters
[356189a]480 assert( false );
[8688ce1]481 } // if
[356189a]482 break;
[f1e012b]483
[51587aa]484 case OT_PREFIX:
485 case OT_PREFIXASSIGN:
486 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]487 output << "(";
[60a8062]488 output << opInfo->symbol;
[9857e8d]489 (*arg)->accept( *visitor );
[6c4ff37]490 output << ")";
[51587aa]491 break;
[71f4e4f]492
[51587aa]493 case OT_POSTFIX:
494 case OT_POSTFIXASSIGN:
495 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]496 (*arg)->accept( *visitor );
[60a8062]497 output << opInfo->symbol;
[51587aa]498 break;
499
[f1e012b]500
[51587aa]501 case OT_INFIX:
502 case OT_INFIXASSIGN:
503 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]504 output << "(";
[9857e8d]505 (*arg++)->accept( *visitor );
[60a8062]506 output << opInfo->symbol;
[9857e8d]507 (*arg)->accept( *visitor );
[6c4ff37]508 output << ")";
[51587aa]509 break;
[71f4e4f]510
[51587aa]511 case OT_CONSTANT:
[721f17a]512 case OT_LABELADDRESS:
513 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]514 assert( false );
[3778cb2]515 } // switch
[9d55ff6]516 } else if( varExpr->get_var()->get_linkage() == LinkageSpec::BuiltinCFA && varExpr->get_var()->get_name() == "intptr" ) {
517 // THIS is a hack to make it a constant until a proper constexpr solution is created
518 output << "((void*)";
519 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
520 (*arg++)->accept( *visitor );
521 output << ")";
[17cd4eb]522 } else {
[9857e8d]523 varExpr->accept( *visitor );
[6c4ff37]524 output << "(";
[51587aa]525 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]526 output << ")";
[17cd4eb]527 } // if
[51587aa]528 } else {
[9857e8d]529 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]530 output << "(";
[51587aa]531 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]532 output << ")";
[51587aa]533 } // if
534 }
[71f4e4f]535
[9857e8d]536 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]537 extension( untypedExpr );
[22bc276]538 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]539 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
540 if ( opInfo ) {
[22bc276]541 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]542 switch ( opInfo->type ) {
[51587aa]543 case OT_INDEX:
[22bc276]544 assert( untypedExpr->args.size() == 2 );
[9857e8d]545 (*arg++)->accept( *visitor );
[6c4ff37]546 output << "[";
[9857e8d]547 (*arg)->accept( *visitor );
[6c4ff37]548 output << "]";
[51587aa]549 break;
[71f4e4f]550
[51587aa]551 case OT_CALL:
[f1e012b]552 assert( false );
553
[c2ce2350]554 case OT_CTOR:
555 case OT_DTOR:
[22bc276]556 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]557 // the expression fed into a single parameter constructor or destructor may contain side
558 // effects, so must still output this expression
[64071c2]559 output << "(";
[9857e8d]560 (*arg++)->accept( *visitor );
[60a8062]561 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]562 } else if ( untypedExpr->get_args().size() == 2 ) {
563 // intrinsic two parameter constructors are essentially bitwise assignment
564 output << "(";
[9857e8d]565 (*arg++)->accept( *visitor );
[60a8062]566 output << opInfo->symbol;
[9857e8d]567 (*arg)->accept( *visitor );
[60a8062]568 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]569 } else {
570 // no constructors with 0 or more than 2 parameters
[42a36d9]571 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]572 output << "(";
573 (*arg++)->accept( *visitor );
[60a8062]574 output << opInfo->symbol << "{ ";
[22bc276]575 genCommaList( arg, untypedExpr->args.end() );
[60a8062]576 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]577 } // if
[51587aa]578 break;
[71f4e4f]579
[51587aa]580 case OT_PREFIX:
581 case OT_PREFIXASSIGN:
[de62360d]582 case OT_LABELADDRESS:
[22bc276]583 assert( untypedExpr->args.size() == 1 );
[6c4ff37]584 output << "(";
[60a8062]585 output << opInfo->symbol;
[9857e8d]586 (*arg)->accept( *visitor );
[6c4ff37]587 output << ")";
[51587aa]588 break;
[71f4e4f]589
[51587aa]590 case OT_POSTFIX:
591 case OT_POSTFIXASSIGN:
[22bc276]592 assert( untypedExpr->args.size() == 1 );
[9857e8d]593 (*arg)->accept( *visitor );
[60a8062]594 output << opInfo->symbol;
[51587aa]595 break;
[71f4e4f]596
[51587aa]597 case OT_INFIX:
598 case OT_INFIXASSIGN:
[22bc276]599 assert( untypedExpr->args.size() == 2 );
[6c4ff37]600 output << "(";
[9857e8d]601 (*arg++)->accept( *visitor );
[60a8062]602 output << opInfo->symbol;
[9857e8d]603 (*arg)->accept( *visitor );
[6c4ff37]604 output << ")";
[51587aa]605 break;
[71f4e4f]606
[51587aa]607 case OT_CONSTANT:
608 // there are no intrinsic definitions of 0 or 1 as functions
609 assert( false );
[3778cb2]610 } // switch
[51587aa]611 } else {
[22bc276]612 // builtin routines
613 nameExpr->accept( *visitor );
614 output << "(";
615 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
616 output << ")";
[51587aa]617 } // if
618 } else {
[22bc276]619 untypedExpr->function->accept( *visitor );
[6c4ff37]620 output << "(";
[22bc276]621 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]622 output << ")";
[51587aa]623 } // if
624 }
[71f4e4f]625
[9857e8d]626 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]627 rangeExpr->low->accept( *visitor );
[064e3ff]628 output << " ... ";
[22bc276]629 rangeExpr->high->accept( *visitor );
[064e3ff]630 }
631
[9857e8d]632 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]633 extension( nameExpr );
[60a8062]634 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
635 if ( opInfo ) {
636 if ( opInfo->type == OT_CONSTANT ) {
637 output << opInfo->symbol;
[5ea7a22]638 } else {
[60a8062]639 output << opInfo->outputName;
[5ea7a22]640 }
[51587aa]641 } else {
[6c4ff37]642 output << nameExpr->get_name();
[51587aa]643 } // if
644 }
[71f4e4f]645
[6e50a6b]646 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
647 extension( dimensionExpr );
648 output << "/*non-type*/" << dimensionExpr->get_name();
649 }
650
[9857e8d]651 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]652 extension( addressExpr );
[6c4ff37]653 output << "(&";
[9857e8d]654 addressExpr->arg->accept( *visitor );
[6c4ff37]655 output << ")";
[51587aa]656 }
657
[9857e8d]658 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]659 extension( addressExpr );
660 output << "(&&" << addressExpr->arg << ")";
661 }
662
[9857e8d]663 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]664 extension( castExpr );
[803deb1]665 output << "(";
[906e24d]666 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]667 output << "(void)";
[d104b02]668 } else {
669 // at least one result type of cast.
670 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
671 // an lvalue cast, this has been taken out.
[803deb1]672 output << "(";
[42a36d9]673 output << genType( castExpr->get_result(), "", options );
[71f4e4f]674 output << ")";
[3778cb2]675 } // if
[da9d79b]676 castExpr->arg->accept( *visitor );
677 output << ")";
678 }
679
680 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]681 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]682 extension( castExpr );
683 output << "((" << castExpr->targetString() << " &)";
684 castExpr->arg->accept( *visitor );
[803deb1]685 output << ")";
[51587aa]686 }
[71f4e4f]687
[9857e8d]688 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]689 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]690 extension( castExpr );
691 output << "(virtual ";
[9857e8d]692 castExpr->get_arg()->accept( *visitor );
[a5f0529]693 output << ")";
694 }
695
[9857e8d]696 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]697 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]698 extension( memberExpr );
[9857e8d]699 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]700 output << ".";
[9857e8d]701 memberExpr->get_member()->accept( *visitor );
[51587aa]702 }
[71f4e4f]703
[9857e8d]704 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]705 extension( memberExpr );
[9857e8d]706 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]707 output << "." << mangleName( memberExpr->get_member() );
[51587aa]708 }
[71f4e4f]709
[9857e8d]710 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]711 extension( variableExpr );
[60a8062]712 const OperatorInfo * opInfo;
[b99fd56]713 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
714 output << "0";
715 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]716 output << opInfo->symbol;
[51587aa]717 } else {
[6c4ff37]718 output << mangleName( variableExpr->get_var() );
[51587aa]719 } // if
720 }
[71f4e4f]721
[9857e8d]722 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]723 assert( constantExpr->get_constant() );
[e04ef3a]724 extension( constantExpr );
[9857e8d]725 constantExpr->get_constant()->accept( *visitor );
[51587aa]726 }
[71f4e4f]727
[9857e8d]728 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]729 extension( sizeofExpr );
[6c4ff37]730 output << "sizeof(";
[51587aa]731 if ( sizeofExpr->get_isType() ) {
[42a36d9]732 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]733 } else {
[9857e8d]734 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]735 } // if
[6c4ff37]736 output << ")";
[51587aa]737 }
[47534159]738
[9857e8d]739 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]740 // use GCC extension to avoid bumping std to C11
[8e9cbb2]741 extension( alignofExpr );
[47534159]742 output << "__alignof__(";
[25a054f]743 if ( alignofExpr->get_isType() ) {
[42a36d9]744 output << genType( alignofExpr->get_type(), "", options );
[47534159]745 } else {
[9857e8d]746 alignofExpr->get_expr()->accept( *visitor );
[47534159]747 } // if
748 output << ")";
749 }
[71f4e4f]750
[9857e8d]751 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]752 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]753 output << "offsetof(";
[42a36d9]754 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]755 output << ", " << offsetofExpr->get_member();
756 output << ")";
[2a4b088]757 }
758
[9857e8d]759 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]760 // use GCC builtin
761 output << "__builtin_offsetof(";
[42a36d9]762 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]763 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]764 output << ")";
765 }
[d63eeb0]766
[9857e8d]767 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]768 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
769 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]770 }
[70a06f6]771
[9857e8d]772 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]773 extension( logicalExpr );
[6c4ff37]774 output << "(";
[9857e8d]775 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]776 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]777 output << " && ";
[51587aa]778 } else {
[6c4ff37]779 output << " || ";
[51587aa]780 } // if
[9857e8d]781 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]782 output << ")";
[51587aa]783 }
[71f4e4f]784
[9857e8d]785 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]786 extension( conditionalExpr );
[6c4ff37]787 output << "(";
[9857e8d]788 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]789 output << " ? ";
[9857e8d]790 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]791 output << " : ";
[9857e8d]792 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]793 output << ")";
[51587aa]794 }
[71f4e4f]795
[9857e8d]796 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]797 extension( commaExpr );
[6c4ff37]798 output << "(";
[42a36d9]799 if ( options.genC ) {
[8a6cf7e]800 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
801 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
802 }
[9857e8d]803 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]804 output << " , ";
[9857e8d]805 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]806 output << ")";
[51587aa]807 }
[71f4e4f]808
[9857e8d]809 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]810 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]811 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]812 }
813
[9857e8d]814 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]815 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]816 extension( tupleExpr );
[e39241b]817 output << "[";
818 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
819 output << "]";
820 }
[907eccb]821
[9857e8d]822 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]823 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]824 extension( tupleExpr );
[e39241b]825 output << "[";
826 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
827 output << "]";
828 }
[71f4e4f]829
[9857e8d]830 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]831 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]832 extension( tupleExpr );
[9857e8d]833 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]834 output << "." << tupleExpr->get_index();
835 }
836
[9857e8d]837 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]838 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
839 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
840 if ( ! options.genC ) {
841 output << genType( typeExpr->get_type(), "", options );
[e4d829b]842 }
[e39241b]843 }
[2b6c1e0]844
[9857e8d]845 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]846 if ( !asmExpr->inout.empty() ) {
[7f5566b]847 output << "[ ";
[665f432]848 output << asmExpr->inout;
[7f5566b]849 output << " ] ";
850 } // if
[665f432]851 asmExpr->constraint->accept( *visitor );
[7f5566b]852 output << " ( ";
[665f432]853 asmExpr->operand->accept( *visitor );
[7f5566b]854 output << " )";
855 }
856
[9857e8d]857 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]858 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]859 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]860 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]861 }
862
[9857e8d]863 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]864 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]865 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]866 unqExpr->get_expr()->accept( *visitor );
[d104b02]867 output << " }";
868 }
869
[9857e8d]870 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]871 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]872 output << "({" << endl;
[f7cb0bc]873 ++indent;
[3c13c03]874 unsigned int numStmts = stmts.size();
875 unsigned int i = 0;
876 for ( Statement * stmt : stmts ) {
[058f549]877 output << indent << printLabels( stmt->get_labels() );
[3c13c03]878 if ( i+1 == numStmts ) {
879 // last statement in a statement expression needs to be handled specially -
880 // cannot cast to void, otherwise the expression statement has no value
881 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]882 exprStmt->expr->accept( *visitor );
[3c13c03]883 output << ";" << endl;
884 ++i;
885 break;
886 }
887 }
[9857e8d]888 stmt->accept( *visitor );
[3c13c03]889 output << endl;
890 if ( wantSpacing( stmt ) ) {
891 output << endl;
892 } // if
893 ++i;
894 }
[f7cb0bc]895 --indent;
[3c13c03]896 output << indent << "})";
[6eb8948]897 }
898
[4e8949f]899 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]900 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]901 expr->callExpr->accept( *visitor );
902 }
903
[44b4114]904 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]905 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]906 expr->expr->accept( *visitor );
907 }
908
[0f79853]909 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]910 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]911 arg->expr->accept( *visitor );
912 }
913
[d807ca28]914 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]915 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]916 output << "_Generic(";
917 expr->control->accept( *visitor );
918 output << ", ";
919 unsigned int numAssocs = expr->associations.size();
920 unsigned int i = 0;
921 for ( GenericExpr::Association & assoc : expr->associations ) {
922 if (assoc.isDefault) {
923 output << "default: ";
924 } else {
[42a36d9]925 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]926 }
927 assoc.expr->accept( *visitor );
928 if ( i+1 != numAssocs ) {
929 output << ", ";
930 }
931 i++;
932 }
933 output << ")";
934 }
935
[4810867]936 // *** Statements
[9857e8d]937 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]938 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]939 output << "{" << endl;
[51587aa]940
[f7cb0bc]941 ++indent;
[51587aa]942
[7f5566b]943 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]944 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]945 (*i)->accept( *visitor );
[2b6c1e0]946
[6c4ff37]947 output << endl;
[2b6c1e0]948 if ( wantSpacing( *i ) ) {
949 output << endl;
[3778cb2]950 } // if
[8688ce1]951 } // for
[f7cb0bc]952 --indent;
[51587aa]953
[cda48b6]954 output << indent << "}";
[51587aa]955 }
956
[9857e8d]957 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]958 assert( exprStmt );
[42a36d9]959 if ( options.genC ) {
[262f085f]960 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]961 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]962 }
[9857e8d]963 exprStmt->get_expr()->accept( *visitor );
[3eb1653]964 output << ";";
[51587aa]965 }
966
[9857e8d]967 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]968 output << "asm ";
969 if ( asmStmt->get_voltile() ) output << "volatile ";
970 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
971 output << "( ";
[9857e8d]972 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]973 output << " : ";
974 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
975 output << " : ";
976 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
977 output << " : ";
978 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
979 if ( ! asmStmt->get_gotolabels().empty() ) {
980 output << " : ";
981 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
982 output << *begin++;
983 if ( begin == asmStmt->get_gotolabels().end() ) break;
984 output << ", ";
985 } // for
986 } // if
[d7312ac]987 output << " );";
[7f5566b]988 }
989
[9857e8d]990 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]991 output << "asm ";
992 AsmStmt * asmStmt = asmDecl->get_stmt();
993 output << "( ";
[9857e8d]994 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]995 output << " )";
[e994912]996 }
997
[2d019af]998 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
999 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
1000 }
1001
[cc32d83]1002 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]1003 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]1004 }
1005
[9857e8d]1006 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]1007 output << "if ( ";
[9857e8d]1008 ifStmt->get_condition()->accept( *visitor );
[7f5566b]1009 output << " ) ";
[51587aa]1010
[3b0bc16]1011 ifStmt->get_then()->accept( *visitor );
[51587aa]1012
[3b0bc16]1013 if ( ifStmt->get_else() != 0) {
[2b6c1e0]1014 output << " else ";
[3b0bc16]1015 ifStmt->get_else()->accept( *visitor );
[51587aa]1016 } // if
1017 }
1018
[9857e8d]1019 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]1020 output << "switch ( ";
[9857e8d]1021 switchStmt->get_condition()->accept( *visitor );
[7f5566b]1022 output << " ) ";
[71f4e4f]1023
[d22e90f]1024 output << "{" << endl;
[f7cb0bc]1025 ++indent;
[9857e8d]1026 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1027 --indent;
[cda48b6]1028 output << indent << "}";
[51587aa]1029 }
1030
[9857e8d]1031 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1032 updateLocation( caseStmt );
[1dcd9554]1033 output << indent;
[eb3261f]1034 if ( caseStmt->isDefault()) {
[2b6c1e0]1035 output << "default";
[eb3261f]1036 } else {
[2b6c1e0]1037 output << "case ";
[9857e8d]1038 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1039 } // if
[d22e90f]1040 output << ":" << endl;
[71f4e4f]1041
[51587aa]1042 std::list<Statement *> sts = caseStmt->get_statements();
1043
[f7cb0bc]1044 ++indent;
[51587aa]1045 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1046 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1047 (*i)->accept( *visitor );
[6c4ff37]1048 output << endl;
[3778cb2]1049 } // for
[f7cb0bc]1050 --indent;
[51587aa]1051 }
1052
[9857e8d]1053 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1054 switch ( branchStmt->get_type()) {
1055 case BranchStmt::Goto:
1056 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1057 output << "goto " << branchStmt->get_target();
[71f4e4f]1058 else {
[51587aa]1059 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1060 output << "goto *";
[9857e8d]1061 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1062 } // if
1063 } // if
1064 break;
1065 case BranchStmt::Break:
[6c4ff37]1066 output << "break";
[51587aa]1067 break;
1068 case BranchStmt::Continue:
[6c4ff37]1069 output << "continue";
[51587aa]1070 break;
[7c2a7b6]1071 case BranchStmt::FallThrough:
1072 case BranchStmt::FallThroughDefault:
[42a36d9]1073 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1074 output << "fallthru";
[7c2a7b6]1075 break;
[6180274]1076 default: ; // prevent warning
[3778cb2]1077 } // switch
[7c2a7b6]1078 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1079 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1080 if ( ! branchStmt->get_target().empty() ) {
1081 output << " " << branchStmt->get_target();
1082 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1083 output << " default";
1084 }
1085 }
[2b6c1e0]1086 output << ";";
[51587aa]1087 }
1088
[9857e8d]1089 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1090 output << "return ";
[9857e8d]1091 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1092 output << ";";
[51587aa]1093 }
1094
[9857e8d]1095 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1096 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1097
1098 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1099 "throw" : "throwResume");
[daf1af8]1100 if (throwStmt->get_expr()) {
1101 output << " ";
[9857e8d]1102 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1103 }
1104 if (throwStmt->get_target()) {
1105 output << " _At ";
[9857e8d]1106 throwStmt->get_target()->accept( *visitor );
[daf1af8]1107 }
1108 output << ";";
1109 }
[e4ea10b7]1110 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1111 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1112
1113 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1114 "catch" : "catchResume");
[e4ea10b7]1115 output << "( ";
1116 stmt->decl->accept( *visitor );
1117 output << " ) ";
1118
1119 if( stmt->cond ) {
1120 output << "if/when(?) (";
1121 stmt->cond->accept( *visitor );
1122 output << ") ";
1123 }
1124 stmt->body->accept( *visitor );
1125 }
1126
1127 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1128 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1129
1130 bool first = true;
1131 for( auto & clause : stmt->clauses ) {
1132 if(first) { output << "or "; first = false; }
1133 if( clause.condition ) {
1134 output << "when(";
1135 stmt->timeout.condition->accept( *visitor );
1136 output << ") ";
1137 }
1138 output << "waitfor(";
1139 clause.target.function->accept( *visitor );
1140 for( Expression * expr : clause.target.arguments ) {
1141 output << ",";
1142 expr->accept( *visitor );
1143 }
1144 output << ") ";
1145 clause.statement->accept( *visitor );
1146 }
1147
1148 if( stmt->timeout.statement ) {
1149 output << "or ";
1150 if( stmt->timeout.condition ) {
1151 output << "when(";
1152 stmt->timeout.condition->accept( *visitor );
1153 output << ") ";
1154 }
1155 output << "timeout(";
1156 stmt->timeout.time->accept( *visitor );
1157 output << ") ";
1158 stmt->timeout.statement->accept( *visitor );
1159 }
1160
1161 if( stmt->orelse.statement ) {
1162 output << "or ";
1163 if( stmt->orelse.condition ) {
1164 output << "when(";
1165 stmt->orelse.condition->accept( *visitor );
1166 output << ")";
1167 }
1168 output << "else ";
1169 stmt->orelse.statement->accept( *visitor );
1170 }
1171 }
1172
[55d6e8de]1173 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1174 if ( ! options.genC ) {
[55d6e8de]1175 output << "with ( ";
1176 genCommaList( with->exprs.begin(), with->exprs.end() );
1177 output << " ) ";
1178 }
1179 with->stmt->accept( *visitor );
1180 }
[daf1af8]1181
[3b0bc16]1182 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1183 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1184 output << "do";
[321a2481]1185 } else {
[d7312ac]1186 output << "while (";
[3b0bc16]1187 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1188 output << ")";
[51587aa]1189 } // if
[2b6c1e0]1190 output << " ";
[51587aa]1191
[3b0bc16]1192 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1193 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1194
[cda48b6]1195 output << indent;
[51587aa]1196
[3b0bc16]1197 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1198 output << " while (";
[3b0bc16]1199 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1200 output << ");";
[51587aa]1201 } // if
1202 }
1203
[9857e8d]1204 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1205 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1206 output << "for (;";
[51587aa]1207
[321a2481]1208 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1209 forStmt->get_condition()->accept( *visitor );
[3778cb2]1210 } // if
[6c4ff37]1211 output << ";";
[51587aa]1212
[321a2481]1213 if ( forStmt->get_increment() != 0 ) {
1214 // cast the top-level expression to void to reduce gcc warnings.
1215 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1216 expr->accept( *visitor );
[3778cb2]1217 } // if
[2b6c1e0]1218 output << ") ";
[51587aa]1219
1220 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1221 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1222 forStmt->get_body()->accept( *visitor );
[51587aa]1223 } // if
1224 }
1225
[9857e8d]1226 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1227 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1228 output << "/* null statement */ ;";
[51587aa]1229 }
1230
[9857e8d]1231 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1232 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1233
[51587aa]1234 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1235 output << ";";
[51587aa]1236 } // if
1237 }
1238
[9857e8d]1239 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1240 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1241 stmt->callStmt->accept( *visitor );
1242 }
1243
[6cebfef]1244 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1245 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1246 stmt->stmt->accept( *visitor );
1247 }
1248
[dd020c0]1249 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1250 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1251 decl->get_storageClasses().print( output );
[a7c90d4]1252 } // if
[dd020c0]1253 } // CodeGenerator::handleStorageClass
[9facf3b]1254
1255 std::string genName( DeclarationWithType * decl ) {
[60a8062]1256 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1257 if ( opInfo ) {
1258 return opInfo->outputName;
[9facf3b]1259 } else {
1260 return decl->get_name();
1261 } // if
1262 }
[1931bb01]1263
1264std::string genName( ast::DeclWithType const * decl ) {
1265 if ( const OperatorInfo * opInfo = operatorLookup( decl->name ) ) {
1266 return opInfo->outputName;
1267 } else {
1268 return decl->name;
1269 }
1270}
1271
[51b73452]1272} // namespace CodeGen
[51587aa]1273
1274// Local Variables: //
1275// tab-width: 4 //
1276// mode: c++ //
1277// compile-command: "make install" //
1278// End: //
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