source: src/CodeGen/CodeGenerator.cc@ 6f774be

ast-experimental
Last change on this file since 6f774be was 9feb34b, checked in by Andrew Beach <ajbeach@…>, 3 years ago

Moved toString and toCString to a new header. Updated includes. cassert was somehow getting instances of toString before but that stopped working so I embedded the new smaller include.
  • Property mode set to 100644
File size: 40.0 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
[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
[9857e8d]297 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]298 extension( enumDecl );
299 std::list< Declaration* > &memb = enumDecl->get_members();
[d8e2a09]300 if (enumDecl->base && ! memb.empty()) {
[8bb86ce]301 long long cur_val = 0;
[51587aa]302 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]303 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]304 assert( obj );
[0bd46fd]305 output << "static ";
[9749d2fa]306 output << genType(enumDecl->base, mangleName( obj ), options);
[8bb86ce]307 genEnumInitializer( visitor, enumDecl->base, output, obj->get_init(), &cur_val, options);
[4390fb6]308 output << ";" << endl;
[51587aa]309 } // for
[4390fb6]310 } else {
311 output << "enum ";
312 genAttributes( enumDecl->get_attributes() );
313
314 output << enumDecl->get_name();
315
316 if ( ! memb.empty() ) {
317 output << " {" << endl;
318
319 ++indent;
320 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
321 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
322 assert( obj );
323 output << indent << mangleName( obj );
324 if ( obj->get_init() ) {
325 output << " = ";
326 obj->get_init()->accept( *visitor );
327 } // if
328 output << "," << endl;
329 } // for
[f7cb0bc]330 --indent;
[cda48b6]331 output << indent << "}";
[4390fb6]332 } // if
[51587aa]333 } // if
334 }
[71f4e4f]335
[9857e8d]336 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]337 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]338 extension( traitDecl );
339 handleAggregate( traitDecl, "trait " );
340 }
[71f4e4f]341
[9857e8d]342 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]343 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]344 output << "typedef ";
[42a36d9]345 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]346 }
[71f4e4f]347
[9857e8d]348 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]349 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]350 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]351 if ( typeDecl->sized ) {
[ab4bff5]352 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]353 }
[ab4bff5]354 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]355 output << " | { ";
[ab4bff5]356 for ( DeclarationWithType * assert : typeDecl->assertions ) {
357 assert->accept( *visitor );
358 output << "; ";
359 }
[a0c7dc36]360 output << " }";
[e39241b]361 }
[51587aa]362 }
363
[92fea32]364 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
365 output << "_Static_assert(";
366 assertDecl->condition->accept( *visitor );
367 output << ", ";
368 assertDecl->message->accept( *visitor );
369 output << ")";
370 }
371
[9857e8d]372 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]373 std::list< Expression * > designators = designation->get_designators();
[e45215c]374 if ( designators.size() == 0 ) return;
[e4d829b]375 for ( Expression * des : designators ) {
[62423350]376 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
377 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
378 output << ".";
[9857e8d]379 des->accept( *visitor );
[e4d829b]380 } else {
[3e54399]381 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]382 output << "[";
[9857e8d]383 des->accept( *visitor );
[62423350]384 output << "]";
[3778cb2]385 } // if
386 } // for
[3eb1653]387 output << " = ";
[e45215c]388 }
389
[9857e8d]390 void CodeGenerator::postvisit( SingleInit * init ) {
391 init->get_value()->accept( *visitor );
[51587aa]392 }
393
[9857e8d]394 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]395 auto initBegin = init->begin();
396 auto initEnd = init->end();
397 auto desigBegin = init->get_designations().begin();
398 auto desigEnd = init->get_designations().end();
399
[6c4ff37]400 output << "{ ";
[e4d829b]401 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]402 (*desigBegin)->accept( *visitor );
403 (*initBegin)->accept( *visitor );
[e4d829b]404 ++initBegin, ++desigBegin;
405 if ( initBegin != initEnd ) {
406 output << ", ";
407 }
408 }
[6c4ff37]409 output << " }";
[e4d829b]410 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]411 }
412
[d22e90f]413 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]414 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]415 // pseudo-output for constructor/destructor pairs
[d22e90f]416 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]417 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]418 output << ", " << endl << indent << "dtor: ";
[9857e8d]419 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]420 output << endl << --indent << "}";
[fc638d2]421 }
422
[9857e8d]423 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]424 output << constant->get_value();
[51587aa]425 }
426
[4810867]427 // *** Expressions
[9857e8d]428 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]429 extension( applicationExpr );
[8688ce1]430 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]431 const OperatorInfo * opInfo;
432 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]433 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]434 switch ( opInfo->type ) {
[51587aa]435 case OT_INDEX:
436 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]437 (*arg++)->accept( *visitor );
[6c4ff37]438 output << "[";
[9857e8d]439 (*arg)->accept( *visitor );
[6c4ff37]440 output << "]";
[51587aa]441 break;
[71f4e4f]442
[51587aa]443 case OT_CALL:
[356189a]444 // there are no intrinsic definitions of the function call operator
[51587aa]445 assert( false );
446 break;
[71f4e4f]447
[f1e012b]448 case OT_CTOR:
[c2ce2350]449 case OT_DTOR:
[356189a]450 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]451 // the expression fed into a single parameter constructor or destructor may contain side
452 // effects, so must still output this expression
[64071c2]453 output << "(";
[9857e8d]454 (*arg++)->accept( *visitor );
[60a8062]455 output << ") /* " << opInfo->inputName << " */";
[356189a]456 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]457 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]458 output << "(";
[9857e8d]459 (*arg++)->accept( *visitor );
[60a8062]460 output << opInfo->symbol;
[9857e8d]461 (*arg)->accept( *visitor );
[60a8062]462 output << ") /* " << opInfo->inputName << " */";
[356189a]463 } else {
[c2ce2350]464 // no constructors with 0 or more than 2 parameters
[356189a]465 assert( false );
[8688ce1]466 } // if
[356189a]467 break;
[f1e012b]468
[51587aa]469 case OT_PREFIX:
470 case OT_PREFIXASSIGN:
471 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]472 output << "(";
[60a8062]473 output << opInfo->symbol;
[9857e8d]474 (*arg)->accept( *visitor );
[6c4ff37]475 output << ")";
[51587aa]476 break;
[71f4e4f]477
[51587aa]478 case OT_POSTFIX:
479 case OT_POSTFIXASSIGN:
480 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]481 (*arg)->accept( *visitor );
[60a8062]482 output << opInfo->symbol;
[51587aa]483 break;
484
[f1e012b]485
[51587aa]486 case OT_INFIX:
487 case OT_INFIXASSIGN:
488 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]489 output << "(";
[9857e8d]490 (*arg++)->accept( *visitor );
[60a8062]491 output << opInfo->symbol;
[9857e8d]492 (*arg)->accept( *visitor );
[6c4ff37]493 output << ")";
[51587aa]494 break;
[71f4e4f]495
[51587aa]496 case OT_CONSTANT:
[721f17a]497 case OT_LABELADDRESS:
498 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]499 assert( false );
[3778cb2]500 } // switch
[9d55ff6]501 } else if( varExpr->get_var()->get_linkage() == LinkageSpec::BuiltinCFA && varExpr->get_var()->get_name() == "intptr" ) {
502 // THIS is a hack to make it a constant until a proper constexpr solution is created
503 output << "((void*)";
504 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
505 (*arg++)->accept( *visitor );
506 output << ")";
[17cd4eb]507 } else {
[9857e8d]508 varExpr->accept( *visitor );
[6c4ff37]509 output << "(";
[51587aa]510 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]511 output << ")";
[17cd4eb]512 } // if
[51587aa]513 } else {
[9857e8d]514 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]515 output << "(";
[51587aa]516 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]517 output << ")";
[51587aa]518 } // if
519 }
[71f4e4f]520
[9857e8d]521 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]522 extension( untypedExpr );
[22bc276]523 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]524 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
525 if ( opInfo ) {
[22bc276]526 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]527 switch ( opInfo->type ) {
[51587aa]528 case OT_INDEX:
[22bc276]529 assert( untypedExpr->args.size() == 2 );
[9857e8d]530 (*arg++)->accept( *visitor );
[6c4ff37]531 output << "[";
[9857e8d]532 (*arg)->accept( *visitor );
[6c4ff37]533 output << "]";
[51587aa]534 break;
[71f4e4f]535
[51587aa]536 case OT_CALL:
[f1e012b]537 assert( false );
538
[c2ce2350]539 case OT_CTOR:
540 case OT_DTOR:
[22bc276]541 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]542 // the expression fed into a single parameter constructor or destructor may contain side
543 // effects, so must still output this expression
[64071c2]544 output << "(";
[9857e8d]545 (*arg++)->accept( *visitor );
[60a8062]546 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]547 } else if ( untypedExpr->get_args().size() == 2 ) {
548 // intrinsic two parameter constructors are essentially bitwise assignment
549 output << "(";
[9857e8d]550 (*arg++)->accept( *visitor );
[60a8062]551 output << opInfo->symbol;
[9857e8d]552 (*arg)->accept( *visitor );
[60a8062]553 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]554 } else {
555 // no constructors with 0 or more than 2 parameters
[42a36d9]556 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]557 output << "(";
558 (*arg++)->accept( *visitor );
[60a8062]559 output << opInfo->symbol << "{ ";
[22bc276]560 genCommaList( arg, untypedExpr->args.end() );
[60a8062]561 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]562 } // if
[51587aa]563 break;
[71f4e4f]564
[51587aa]565 case OT_PREFIX:
566 case OT_PREFIXASSIGN:
[de62360d]567 case OT_LABELADDRESS:
[22bc276]568 assert( untypedExpr->args.size() == 1 );
[6c4ff37]569 output << "(";
[60a8062]570 output << opInfo->symbol;
[9857e8d]571 (*arg)->accept( *visitor );
[6c4ff37]572 output << ")";
[51587aa]573 break;
[71f4e4f]574
[51587aa]575 case OT_POSTFIX:
576 case OT_POSTFIXASSIGN:
[22bc276]577 assert( untypedExpr->args.size() == 1 );
[9857e8d]578 (*arg)->accept( *visitor );
[60a8062]579 output << opInfo->symbol;
[51587aa]580 break;
[71f4e4f]581
[51587aa]582 case OT_INFIX:
583 case OT_INFIXASSIGN:
[22bc276]584 assert( untypedExpr->args.size() == 2 );
[6c4ff37]585 output << "(";
[9857e8d]586 (*arg++)->accept( *visitor );
[60a8062]587 output << opInfo->symbol;
[9857e8d]588 (*arg)->accept( *visitor );
[6c4ff37]589 output << ")";
[51587aa]590 break;
[71f4e4f]591
[51587aa]592 case OT_CONSTANT:
593 // there are no intrinsic definitions of 0 or 1 as functions
594 assert( false );
[3778cb2]595 } // switch
[51587aa]596 } else {
[22bc276]597 // builtin routines
598 nameExpr->accept( *visitor );
599 output << "(";
600 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
601 output << ")";
[51587aa]602 } // if
603 } else {
[22bc276]604 untypedExpr->function->accept( *visitor );
[6c4ff37]605 output << "(";
[22bc276]606 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]607 output << ")";
[51587aa]608 } // if
609 }
[71f4e4f]610
[9857e8d]611 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]612 rangeExpr->low->accept( *visitor );
[064e3ff]613 output << " ... ";
[22bc276]614 rangeExpr->high->accept( *visitor );
[064e3ff]615 }
616
[9857e8d]617 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]618 extension( nameExpr );
[60a8062]619 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
620 if ( opInfo ) {
621 if ( opInfo->type == OT_CONSTANT ) {
622 output << opInfo->symbol;
[5ea7a22]623 } else {
[60a8062]624 output << opInfo->outputName;
[5ea7a22]625 }
[51587aa]626 } else {
[6c4ff37]627 output << nameExpr->get_name();
[51587aa]628 } // if
629 }
[71f4e4f]630
[6e50a6b]631 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
632 extension( dimensionExpr );
633 output << "/*non-type*/" << dimensionExpr->get_name();
634 }
635
[9857e8d]636 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]637 extension( addressExpr );
[6c4ff37]638 output << "(&";
[9857e8d]639 addressExpr->arg->accept( *visitor );
[6c4ff37]640 output << ")";
[51587aa]641 }
642
[9857e8d]643 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]644 extension( addressExpr );
645 output << "(&&" << addressExpr->arg << ")";
646 }
647
[9857e8d]648 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]649 extension( castExpr );
[803deb1]650 output << "(";
[906e24d]651 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]652 output << "(void)";
[d104b02]653 } else {
654 // at least one result type of cast.
655 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
656 // an lvalue cast, this has been taken out.
[803deb1]657 output << "(";
[42a36d9]658 output << genType( castExpr->get_result(), "", options );
[71f4e4f]659 output << ")";
[3778cb2]660 } // if
[da9d79b]661 castExpr->arg->accept( *visitor );
662 output << ")";
663 }
664
665 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]666 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]667 extension( castExpr );
668 output << "((" << castExpr->targetString() << " &)";
669 castExpr->arg->accept( *visitor );
[803deb1]670 output << ")";
[51587aa]671 }
[71f4e4f]672
[9857e8d]673 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]674 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]675 extension( castExpr );
676 output << "(virtual ";
[9857e8d]677 castExpr->get_arg()->accept( *visitor );
[a5f0529]678 output << ")";
679 }
680
[9857e8d]681 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]682 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]683 extension( memberExpr );
[9857e8d]684 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]685 output << ".";
[9857e8d]686 memberExpr->get_member()->accept( *visitor );
[51587aa]687 }
[71f4e4f]688
[9857e8d]689 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]690 extension( memberExpr );
[9857e8d]691 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]692 output << "." << mangleName( memberExpr->get_member() );
[51587aa]693 }
[71f4e4f]694
[9857e8d]695 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]696 extension( variableExpr );
[60a8062]697 const OperatorInfo * opInfo;
[b99fd56]698 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
699 output << "0";
700 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]701 output << opInfo->symbol;
[51587aa]702 } else {
[6c4ff37]703 output << mangleName( variableExpr->get_var() );
[51587aa]704 } // if
705 }
[71f4e4f]706
[9857e8d]707 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]708 assert( constantExpr->get_constant() );
[e04ef3a]709 extension( constantExpr );
[9857e8d]710 constantExpr->get_constant()->accept( *visitor );
[51587aa]711 }
[71f4e4f]712
[9857e8d]713 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]714 extension( sizeofExpr );
[6c4ff37]715 output << "sizeof(";
[51587aa]716 if ( sizeofExpr->get_isType() ) {
[42a36d9]717 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]718 } else {
[9857e8d]719 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]720 } // if
[6c4ff37]721 output << ")";
[51587aa]722 }
[47534159]723
[9857e8d]724 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]725 // use GCC extension to avoid bumping std to C11
[8e9cbb2]726 extension( alignofExpr );
[47534159]727 output << "__alignof__(";
[25a054f]728 if ( alignofExpr->get_isType() ) {
[42a36d9]729 output << genType( alignofExpr->get_type(), "", options );
[47534159]730 } else {
[9857e8d]731 alignofExpr->get_expr()->accept( *visitor );
[47534159]732 } // if
733 output << ")";
734 }
[71f4e4f]735
[9857e8d]736 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]737 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]738 output << "offsetof(";
[42a36d9]739 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]740 output << ", " << offsetofExpr->get_member();
741 output << ")";
[2a4b088]742 }
743
[9857e8d]744 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]745 // use GCC builtin
746 output << "__builtin_offsetof(";
[42a36d9]747 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]748 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]749 output << ")";
750 }
[d63eeb0]751
[9857e8d]752 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]753 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
754 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]755 }
[70a06f6]756
[9857e8d]757 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]758 extension( logicalExpr );
[6c4ff37]759 output << "(";
[9857e8d]760 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]761 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]762 output << " && ";
[51587aa]763 } else {
[6c4ff37]764 output << " || ";
[51587aa]765 } // if
[9857e8d]766 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]767 output << ")";
[51587aa]768 }
[71f4e4f]769
[9857e8d]770 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]771 extension( conditionalExpr );
[6c4ff37]772 output << "(";
[9857e8d]773 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]774 output << " ? ";
[9857e8d]775 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]776 output << " : ";
[9857e8d]777 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]778 output << ")";
[51587aa]779 }
[71f4e4f]780
[9857e8d]781 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]782 extension( commaExpr );
[6c4ff37]783 output << "(";
[42a36d9]784 if ( options.genC ) {
[8a6cf7e]785 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
786 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
787 }
[9857e8d]788 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]789 output << " , ";
[9857e8d]790 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]791 output << ")";
[51587aa]792 }
[71f4e4f]793
[9857e8d]794 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]795 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]796 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]797 }
798
[9857e8d]799 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]800 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]801 extension( tupleExpr );
[e39241b]802 output << "[";
803 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
804 output << "]";
805 }
[907eccb]806
[9857e8d]807 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]808 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]809 extension( tupleExpr );
[e39241b]810 output << "[";
811 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
812 output << "]";
813 }
[71f4e4f]814
[9857e8d]815 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]816 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]817 extension( tupleExpr );
[9857e8d]818 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]819 output << "." << tupleExpr->get_index();
820 }
821
[9857e8d]822 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]823 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
824 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
825 if ( ! options.genC ) {
826 output << genType( typeExpr->get_type(), "", options );
[e4d829b]827 }
[e39241b]828 }
[2b6c1e0]829
[9857e8d]830 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]831 if ( !asmExpr->inout.empty() ) {
[7f5566b]832 output << "[ ";
[665f432]833 output << asmExpr->inout;
[7f5566b]834 output << " ] ";
835 } // if
[665f432]836 asmExpr->constraint->accept( *visitor );
[7f5566b]837 output << " ( ";
[665f432]838 asmExpr->operand->accept( *visitor );
[7f5566b]839 output << " )";
840 }
841
[9857e8d]842 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]843 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]844 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]845 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]846 }
847
[9857e8d]848 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]849 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]850 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]851 unqExpr->get_expr()->accept( *visitor );
[d104b02]852 output << " }";
853 }
854
[9857e8d]855 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]856 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]857 output << "({" << endl;
[f7cb0bc]858 ++indent;
[3c13c03]859 unsigned int numStmts = stmts.size();
860 unsigned int i = 0;
861 for ( Statement * stmt : stmts ) {
[058f549]862 output << indent << printLabels( stmt->get_labels() );
[3c13c03]863 if ( i+1 == numStmts ) {
864 // last statement in a statement expression needs to be handled specially -
865 // cannot cast to void, otherwise the expression statement has no value
866 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]867 exprStmt->expr->accept( *visitor );
[3c13c03]868 output << ";" << endl;
869 ++i;
870 break;
871 }
872 }
[9857e8d]873 stmt->accept( *visitor );
[3c13c03]874 output << endl;
875 if ( wantSpacing( stmt ) ) {
876 output << endl;
877 } // if
878 ++i;
879 }
[f7cb0bc]880 --indent;
[3c13c03]881 output << indent << "})";
[6eb8948]882 }
883
[4e8949f]884 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]885 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]886 expr->callExpr->accept( *visitor );
887 }
888
[44b4114]889 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]890 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]891 expr->expr->accept( *visitor );
892 }
893
[0f79853]894 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]895 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]896 arg->expr->accept( *visitor );
897 }
898
[d807ca28]899 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]900 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]901 output << "_Generic(";
902 expr->control->accept( *visitor );
903 output << ", ";
904 unsigned int numAssocs = expr->associations.size();
905 unsigned int i = 0;
906 for ( GenericExpr::Association & assoc : expr->associations ) {
907 if (assoc.isDefault) {
908 output << "default: ";
909 } else {
[42a36d9]910 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]911 }
912 assoc.expr->accept( *visitor );
913 if ( i+1 != numAssocs ) {
914 output << ", ";
915 }
916 i++;
917 }
918 output << ")";
919 }
920
[4810867]921 // *** Statements
[9857e8d]922 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]923 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]924 output << "{" << endl;
[51587aa]925
[f7cb0bc]926 ++indent;
[51587aa]927
[7f5566b]928 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]929 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]930 (*i)->accept( *visitor );
[2b6c1e0]931
[6c4ff37]932 output << endl;
[2b6c1e0]933 if ( wantSpacing( *i ) ) {
934 output << endl;
[3778cb2]935 } // if
[8688ce1]936 } // for
[f7cb0bc]937 --indent;
[51587aa]938
[cda48b6]939 output << indent << "}";
[51587aa]940 }
941
[9857e8d]942 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]943 assert( exprStmt );
[42a36d9]944 if ( options.genC ) {
[262f085f]945 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]946 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]947 }
[9857e8d]948 exprStmt->get_expr()->accept( *visitor );
[3eb1653]949 output << ";";
[51587aa]950 }
951
[9857e8d]952 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]953 output << "asm ";
954 if ( asmStmt->get_voltile() ) output << "volatile ";
955 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
956 output << "( ";
[9857e8d]957 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]958 output << " : ";
959 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
960 output << " : ";
961 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
962 output << " : ";
963 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
964 if ( ! asmStmt->get_gotolabels().empty() ) {
965 output << " : ";
966 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
967 output << *begin++;
968 if ( begin == asmStmt->get_gotolabels().end() ) break;
969 output << ", ";
970 } // for
971 } // if
[d7312ac]972 output << " );";
[7f5566b]973 }
974
[9857e8d]975 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]976 output << "asm ";
977 AsmStmt * asmStmt = asmDecl->get_stmt();
978 output << "( ";
[9857e8d]979 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]980 output << " )";
[e994912]981 }
982
[2d019af]983 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
984 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
985 }
986
[cc32d83]987 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]988 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]989 }
990
[9857e8d]991 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]992 output << "if ( ";
[9857e8d]993 ifStmt->get_condition()->accept( *visitor );
[7f5566b]994 output << " ) ";
[51587aa]995
[3b0bc16]996 ifStmt->get_then()->accept( *visitor );
[51587aa]997
[3b0bc16]998 if ( ifStmt->get_else() != 0) {
[2b6c1e0]999 output << " else ";
[3b0bc16]1000 ifStmt->get_else()->accept( *visitor );
[51587aa]1001 } // if
1002 }
1003
[9857e8d]1004 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]1005 output << "switch ( ";
[9857e8d]1006 switchStmt->get_condition()->accept( *visitor );
[7f5566b]1007 output << " ) ";
[71f4e4f]1008
[d22e90f]1009 output << "{" << endl;
[f7cb0bc]1010 ++indent;
[9857e8d]1011 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1012 --indent;
[cda48b6]1013 output << indent << "}";
[51587aa]1014 }
1015
[9857e8d]1016 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1017 updateLocation( caseStmt );
[1dcd9554]1018 output << indent;
[eb3261f]1019 if ( caseStmt->isDefault()) {
[2b6c1e0]1020 output << "default";
[eb3261f]1021 } else {
[2b6c1e0]1022 output << "case ";
[9857e8d]1023 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1024 } // if
[d22e90f]1025 output << ":" << endl;
[71f4e4f]1026
[51587aa]1027 std::list<Statement *> sts = caseStmt->get_statements();
1028
[f7cb0bc]1029 ++indent;
[51587aa]1030 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1031 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1032 (*i)->accept( *visitor );
[6c4ff37]1033 output << endl;
[3778cb2]1034 } // for
[f7cb0bc]1035 --indent;
[51587aa]1036 }
1037
[9857e8d]1038 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1039 switch ( branchStmt->get_type()) {
1040 case BranchStmt::Goto:
1041 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1042 output << "goto " << branchStmt->get_target();
[71f4e4f]1043 else {
[51587aa]1044 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1045 output << "goto *";
[9857e8d]1046 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1047 } // if
1048 } // if
1049 break;
1050 case BranchStmt::Break:
[6c4ff37]1051 output << "break";
[51587aa]1052 break;
1053 case BranchStmt::Continue:
[6c4ff37]1054 output << "continue";
[51587aa]1055 break;
[7c2a7b6]1056 case BranchStmt::FallThrough:
1057 case BranchStmt::FallThroughDefault:
[42a36d9]1058 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1059 output << "fallthru";
[7c2a7b6]1060 break;
[6180274]1061 default: ; // prevent warning
[3778cb2]1062 } // switch
[7c2a7b6]1063 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1064 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1065 if ( ! branchStmt->get_target().empty() ) {
1066 output << " " << branchStmt->get_target();
1067 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1068 output << " default";
1069 }
1070 }
[2b6c1e0]1071 output << ";";
[51587aa]1072 }
1073
[9857e8d]1074 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1075 output << "return ";
[9857e8d]1076 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1077 output << ";";
[51587aa]1078 }
1079
[9857e8d]1080 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1081 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1082
1083 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1084 "throw" : "throwResume");
[daf1af8]1085 if (throwStmt->get_expr()) {
1086 output << " ";
[9857e8d]1087 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1088 }
1089 if (throwStmt->get_target()) {
1090 output << " _At ";
[9857e8d]1091 throwStmt->get_target()->accept( *visitor );
[daf1af8]1092 }
1093 output << ";";
1094 }
[e4ea10b7]1095 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1096 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1097
1098 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1099 "catch" : "catchResume");
[e4ea10b7]1100 output << "( ";
1101 stmt->decl->accept( *visitor );
1102 output << " ) ";
1103
1104 if( stmt->cond ) {
1105 output << "if/when(?) (";
1106 stmt->cond->accept( *visitor );
1107 output << ") ";
1108 }
1109 stmt->body->accept( *visitor );
1110 }
1111
1112 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1113 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1114
1115 bool first = true;
1116 for( auto & clause : stmt->clauses ) {
1117 if(first) { output << "or "; first = false; }
1118 if( clause.condition ) {
1119 output << "when(";
1120 stmt->timeout.condition->accept( *visitor );
1121 output << ") ";
1122 }
1123 output << "waitfor(";
1124 clause.target.function->accept( *visitor );
1125 for( Expression * expr : clause.target.arguments ) {
1126 output << ",";
1127 expr->accept( *visitor );
1128 }
1129 output << ") ";
1130 clause.statement->accept( *visitor );
1131 }
1132
1133 if( stmt->timeout.statement ) {
1134 output << "or ";
1135 if( stmt->timeout.condition ) {
1136 output << "when(";
1137 stmt->timeout.condition->accept( *visitor );
1138 output << ") ";
1139 }
1140 output << "timeout(";
1141 stmt->timeout.time->accept( *visitor );
1142 output << ") ";
1143 stmt->timeout.statement->accept( *visitor );
1144 }
1145
1146 if( stmt->orelse.statement ) {
1147 output << "or ";
1148 if( stmt->orelse.condition ) {
1149 output << "when(";
1150 stmt->orelse.condition->accept( *visitor );
1151 output << ")";
1152 }
1153 output << "else ";
1154 stmt->orelse.statement->accept( *visitor );
1155 }
1156 }
1157
[55d6e8de]1158 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1159 if ( ! options.genC ) {
[55d6e8de]1160 output << "with ( ";
1161 genCommaList( with->exprs.begin(), with->exprs.end() );
1162 output << " ) ";
1163 }
1164 with->stmt->accept( *visitor );
1165 }
[daf1af8]1166
[3b0bc16]1167 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1168 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1169 output << "do";
[321a2481]1170 } else {
[d7312ac]1171 output << "while (";
[3b0bc16]1172 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1173 output << ")";
[51587aa]1174 } // if
[2b6c1e0]1175 output << " ";
[51587aa]1176
[3b0bc16]1177 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1178 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1179
[cda48b6]1180 output << indent;
[51587aa]1181
[3b0bc16]1182 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1183 output << " while (";
[3b0bc16]1184 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1185 output << ");";
[51587aa]1186 } // if
1187 }
1188
[9857e8d]1189 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1190 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1191 output << "for (;";
[51587aa]1192
[321a2481]1193 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1194 forStmt->get_condition()->accept( *visitor );
[3778cb2]1195 } // if
[6c4ff37]1196 output << ";";
[51587aa]1197
[321a2481]1198 if ( forStmt->get_increment() != 0 ) {
1199 // cast the top-level expression to void to reduce gcc warnings.
1200 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1201 expr->accept( *visitor );
[3778cb2]1202 } // if
[2b6c1e0]1203 output << ") ";
[51587aa]1204
1205 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1206 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1207 forStmt->get_body()->accept( *visitor );
[51587aa]1208 } // if
1209 }
1210
[9857e8d]1211 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1212 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1213 output << "/* null statement */ ;";
[51587aa]1214 }
1215
[9857e8d]1216 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1217 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1218
[51587aa]1219 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1220 output << ";";
[51587aa]1221 } // if
1222 }
1223
[9857e8d]1224 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1225 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1226 stmt->callStmt->accept( *visitor );
1227 }
1228
[6cebfef]1229 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1230 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1231 stmt->stmt->accept( *visitor );
1232 }
1233
[dd020c0]1234 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1235 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1236 decl->get_storageClasses().print( output );
[a7c90d4]1237 } // if
[dd020c0]1238 } // CodeGenerator::handleStorageClass
[9facf3b]1239
1240 std::string genName( DeclarationWithType * decl ) {
[60a8062]1241 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1242 if ( opInfo ) {
1243 return opInfo->outputName;
[9facf3b]1244 } else {
1245 return decl->get_name();
1246 } // if
1247 }
[1931bb01]1248
1249std::string genName( ast::DeclWithType const * decl ) {
1250 if ( const OperatorInfo * opInfo = operatorLookup( decl->name ) ) {
1251 return opInfo->outputName;
1252 } else {
1253 return decl->name;
1254 }
1255}
1256
[51b73452]1257} // namespace CodeGen
[51587aa]1258
1259// Local Variables: //
1260// tab-width: 4 //
1261// mode: c++ //
1262// compile-command: "make install" //
1263// End: //
Note: See TracBrowser for help on using the repository browser.