source: src/CodeGen/CodeGenerator.cc@ f238fcc2

ADT ast-experimental enum pthread-emulation qualifiedEnum
Last change on this file since f238fcc2 was 3e54399, checked in by JiadaL <j82liang@…>, 4 years ago

The compiler now will add a cast to base type for the usage of type enum; but it will fail because of violating some restrictions for the auto-gen functions. Need to investiage more
  • Property mode set to 100644
File size: 38.3 KB
RevLine 
[51587aa]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[71f4e4f]7// CodeGenerator.cc --
[51587aa]8//
9// Author : Richard C. Bilson
10// Created On : Mon May 18 07:44:20 2015
[de8d7fb1]11// Last Modified By : Peter A. Buhr
[6180274]12// Last Modified On : Wed Feb 2 20:30:30 2022
13// Update Count : 541
[51587aa]14//
[3268a58]15#include "CodeGenerator.h"
[51587aa]16
[bf2438c]17#include <cassert> // for assert, assertf
18#include <list> // for _List_iterator, list, list<>::it...
[51b73452]19
[bf2438c]20#include "Common/UniqueName.h" // for UniqueName
21#include "Common/utility.h" // for CodeLocation, toString
22#include "GenType.h" // for genType
23#include "InitTweak/InitTweak.h" // for getPointerBase
24#include "OperatorTable.h" // for OperatorInfo, operatorLookup
[07de76b]25#include "SynTree/LinkageSpec.h" // for Spec, Intrinsic
[bf2438c]26#include "SynTree/Attribute.h" // for Attribute
27#include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode
28#include "SynTree/Constant.h" // for Constant
29#include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl
30#include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica...
31#include "SynTree/Initializer.h" // for Initializer, ListInit, Designation
32#include "SynTree/Label.h" // for Label, operator<<
33#include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt
34#include "SynTree/Type.h" // for Type, Type::StorageClasses, Func...
[10a7775]35
[51b73452]36using namespace std;
37
38namespace CodeGen {
[6c4ff37]39 int CodeGenerator::tabsize = 4;
[51587aa]40
[60a8062]41 // The kinds of statements that would ideally be followed by whitespace.
[2b6c1e0]42 bool wantSpacing( Statement * stmt) {
43 return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) ||
[3b0bc16]44 dynamic_cast< WhileDoStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt );
[2b6c1e0]45 }
46
[8688ce1]47 void CodeGenerator::extension( Expression * expr ) {
[8e9cbb2]48 if ( expr->get_extension() ) {
49 output << "__extension__ ";
50 } // if
51 } // extension
52
[8688ce1]53 void CodeGenerator::extension( Declaration * decl ) {
[8e9cbb2]54 if ( decl->get_extension() ) {
55 output << "__extension__ ";
56 } // if
57 } // extension
58
[58dd019]59 void CodeGenerator::asmName( DeclarationWithType * decl ) {
[e612146c]60 if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) {
[58dd019]61 output << " asm ( " << asmName->get_constant()->get_value() << " )";
62 } // if
63 } // extension
64
[888cbe4]65 CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) {
66 labels = &l;
67 return *this;
68 }
69
[8688ce1]70 ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) {
[888cbe4]71 std::list< Label > & labs = *printLabels.labels;
72 // l.unique(); // assumes a sorted list. Why not use set? Does order matter?
73 for ( Label & l : labs ) {
74 output << l.get_name() + ": ";
75 printLabels.cg.genAttributes( l.get_attributes() );
[8688ce1]76 } // for
[888cbe4]77 return output;
78 }
79
[60a8062]80 // Using updateLocation at the beginning of a node and endl within a node should become the method of formating.
[8bafacc]81 void CodeGenerator::updateLocation( CodeLocation const & to ) {
[d22e90f]82 // skip if linemarks shouldn't appear or if codelocation is unset
[42a36d9]83 if ( !options.lineMarks || to.isUnset() ) return;
[d22e90f]84
85 if ( currentLocation.followedBy( to, 0 ) ) {
[8bafacc]86 return;
87 } else if ( currentLocation.followedBy( to, 1 ) ) {
88 output << "\n" << indent;
[d48e529]89 currentLocation.first_line += 1;
[8bafacc]90 } else if ( currentLocation.followedBy( to, 2 ) ) {
91 output << "\n\n" << indent;
[d48e529]92 currentLocation.first_line += 2;
[8bafacc]93 } else {
[d48e529]94 output << "\n# " << to.first_line << " \"" << to.filename
[60a8062]95 << "\"\n" << indent;
[8bafacc]96 currentLocation = to;
97 }
98 output << std::flush;
99 }
[c850687]100
[8bafacc]101 void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) {
102 updateLocation( to->location );
[c850687]103 }
104
[d22e90f]105 // replace endl
106 ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const {
107 // if ( !cg.lineMarks ) {
108 // os << "\n" << cg.indent << std::flush;
109 // }
110 os << "\n" << std::flush;
111 cg.currentLocation.first_line++;
112 // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/";
113 return os;
[c850687]114 }
115
[4e5e6cc]116 CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks, bool printExprTypes ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options( pretty, genC, lineMarks, printExprTypes ), endl( *this ) {}
117 CodeGenerator::CodeGenerator( std::ostream & os, const Options &options ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options(options), endl( *this ) {}
[cda48b6]118
[486341f]119 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]120 // GCC builtins should always be printed unmangled
[42a36d9]121 if ( options.pretty || decl->linkage.is_gcc_builtin ) return decl->name;
[16ba4a6f]122 if ( LinkageSpec::isMangled(decl->linkage) && decl->mangleName != "" ) {
[f326f99]123 // need to incorporate scope level in order to differentiate names for destructors
124 return decl->get_scopedMangleName();
[51587aa]125 } else {
[13073be]126 return decl->name;
[51587aa]127 } // if
128 }
[94b4364]129
[44a81853]130 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
[60a8062]131 if ( attributes.empty() ) return;
[44a81853]132 output << "__attribute__ ((";
133 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]134 output << (*attr)->name;
135 if ( ! (*attr)->parameters.empty() ) {
[44a81853]136 output << "(";
[85b2300]137 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]138 output << ")";
139 } // if
[60a8062]140 if ( ++attr == attributes.end() ) break;
[44a81853]141 output << ","; // separator
142 } // for
143 output << ")) ";
144 } // CodeGenerator::genAttributes
[7baed7d]145
[9857e8d]146 // *** BaseSyntaxNode
[d22e90f]147 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]148 // turn off automatic recursion for all nodes, to allow each visitor to
149 // precisely control the order in which its children are visited.
150 visit_children = false;
[d22e90f]151 updateLocation( node );
[9857e8d]152 }
153
154 // *** BaseSyntaxNode
155 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
156 std::stringstream ss;
157 node->print( ss );
158 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
159 }
[7baed7d]160
[5f08961d]161 // *** Expression
162 void CodeGenerator::previsit( Expression * node ) {
163 previsit( (BaseSyntaxNode *)node );
164 GuardAction( [this, node](){
[60a8062]165 if ( options.printExprTypes && node->result ) {
166 output << " /* " << genType( node->result, "", options ) << " */ ";
167 }
168 } );
[5f08961d]169 }
170
[4810867]171 // *** Declarations
[9857e8d]172 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]173 // deleted decls should never be used, so don't print them
[42a36d9]174 if ( functionDecl->isDeleted && options.genC ) return;
[8e9cbb2]175 extension( functionDecl );
[7baed7d]176 genAttributes( functionDecl->get_attributes() );
177
[51587aa]178 handleStorageClass( functionDecl );
[6e8bd43]179 functionDecl->get_funcSpec().print( output );
[dd020c0]180
[da09ba1]181 Options subOptions = options;
[76f7fc7]182 subOptions.anonymousUnused = functionDecl->has_body();
[da09ba1]183 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), subOptions );
[51587aa]184
[58dd019]185 asmName( functionDecl );
186
[51587aa]187 if ( functionDecl->get_statements() ) {
[9857e8d]188 functionDecl->get_statements()->accept( *visitor );
[51587aa]189 } // if
[3ed994e]190 if ( functionDecl->isDeleted ) {
191 output << " = void";
192 }
[51587aa]193 }
194
[9857e8d]195 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]196 // deleted decls should never be used, so don't print them
[42a36d9]197 if ( objectDecl->isDeleted && options.genC ) return;
[de8d7fb1]198
199 // gcc allows an empty declarator (no name) for bit-fields and C states: 6.7.2.1 Structure and union specifiers,
200 // point 4, page 113: If the (bit field) value is zero, the declaration shall have no declarator. For anything
201 // else, the anonymous name refers to the anonymous object for plan9 inheritance.
202 if ( objectDecl->get_name().empty() && options.genC && ! objectDecl->get_bitfieldWidth() ) {
[e39241b]203 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]204 static UniqueName name = { "__anonymous_object" };
205 objectDecl->set_name( name.newName() );
[de8d7fb1]206 // Stops unused parameter warnings.
207 if ( options.anonymousUnused ) {
208 objectDecl->attributes.push_back( new Attribute( "unused" ) );
209 }
[d9c8a59]210 }
211
[8e9cbb2]212 extension( objectDecl );
[f9cebb5]213 genAttributes( objectDecl->get_attributes() );
214
[51587aa]215 handleStorageClass( objectDecl );
[42a36d9]216 output << genType( objectDecl->get_type(), mangleName( objectDecl ), options.pretty, options.genC );
[71f4e4f]217
[58dd019]218 asmName( objectDecl );
219
[51587aa]220 if ( objectDecl->get_init() ) {
[6c4ff37]221 output << " = ";
[9857e8d]222 objectDecl->get_init()->accept( *visitor );
[51587aa]223 } // if
[3ed994e]224 if ( objectDecl->isDeleted ) {
225 output << " = void";
226 }
[3778cb2]227
[51587aa]228 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]229 output << ":";
[9857e8d]230 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]231 } // if
232 }
233
[5f642e38]234 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[42a36d9]235 if( ! aggDecl->parameters.empty() && ! options.genC ) {
[e39241b]236 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
237 output << "forall(";
[0b3b2ae]238 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]239 output << ")" << endl;
[e6cee92]240 output << indent;
[e39241b]241 }
242
[593370c]243 output << kind;
[0b3b2ae]244 genAttributes( aggDecl->attributes );
245 output << aggDecl->name;
[71f4e4f]246
[2c57025]247 if ( aggDecl->has_body() ) {
[0b3b2ae]248 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]249 output << " {" << endl;
[51587aa]250
[f7cb0bc]251 ++indent;
[3778cb2]252 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]253 output << indent;
[9857e8d]254 (*i)->accept( *visitor );
[6c4ff37]255 output << ";" << endl;
[3778cb2]256 } // for
[51587aa]257
[f7cb0bc]258 --indent;
[51587aa]259
[cda48b6]260 output << indent << "}";
[17cd4eb]261 } // if
[51587aa]262 }
[17cd4eb]263
[9857e8d]264 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]265 extension( structDecl );
[5f642e38]266 handleAggregate( structDecl, "struct " );
[51587aa]267 }
[17cd4eb]268
[9857e8d]269 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]270 extension( unionDecl );
[5f642e38]271 handleAggregate( unionDecl, "union " );
[51587aa]272 }
[71f4e4f]273
[9857e8d]274 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]275 extension( enumDecl );
[786c438]276 output << "enum ";
[c0aa336]277 genAttributes( enumDecl->get_attributes() );
[51587aa]278
[a984e65]279 output << enumDecl->get_name();
[71f4e4f]280
[8e9cbb2]281 std::list< Declaration* > &memb = enumDecl->get_members();
[51587aa]282
283 if ( ! memb.empty() ) {
[cda48b6]284 output << " {" << endl;
[51587aa]285
[f7cb0bc]286 ++indent;
[51587aa]287 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]288 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]289 assert( obj );
[87e08e24]290 output << indent << mangleName( obj );
[51587aa]291 if ( obj->get_init() ) {
[6c4ff37]292 output << " = ";
[f135b50]293 // In progress
[9857e8d]294 obj->get_init()->accept( *visitor );
[51587aa]295 } // if
[6c4ff37]296 output << "," << endl;
[51587aa]297 } // for
298
[f7cb0bc]299 --indent;
[51587aa]300
[cda48b6]301 output << indent << "}";
[51587aa]302 } // if
303 }
[71f4e4f]304
[9857e8d]305 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]306 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]307 extension( traitDecl );
308 handleAggregate( traitDecl, "trait " );
309 }
[71f4e4f]310
[9857e8d]311 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]312 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]313 output << "typedef ";
[42a36d9]314 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]315 }
[71f4e4f]316
[9857e8d]317 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]318 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]319 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]320 if ( typeDecl->sized ) {
[ab4bff5]321 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]322 }
[ab4bff5]323 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]324 output << " | { ";
[ab4bff5]325 for ( DeclarationWithType * assert : typeDecl->assertions ) {
326 assert->accept( *visitor );
327 output << "; ";
328 }
[a0c7dc36]329 output << " }";
[e39241b]330 }
[51587aa]331 }
332
[92fea32]333 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
334 output << "_Static_assert(";
335 assertDecl->condition->accept( *visitor );
336 output << ", ";
337 assertDecl->message->accept( *visitor );
338 output << ")";
339 }
340
[9857e8d]341 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]342 std::list< Expression * > designators = designation->get_designators();
[e45215c]343 if ( designators.size() == 0 ) return;
[e4d829b]344 for ( Expression * des : designators ) {
[62423350]345 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
346 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
347 output << ".";
[9857e8d]348 des->accept( *visitor );
[e4d829b]349 } else {
[3e54399]350 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]351 output << "[";
[9857e8d]352 des->accept( *visitor );
[62423350]353 output << "]";
[3778cb2]354 } // if
355 } // for
[e45215c]356 output << " = ";
357 }
358
[9857e8d]359 void CodeGenerator::postvisit( SingleInit * init ) {
360 init->get_value()->accept( *visitor );
[51587aa]361 }
362
[9857e8d]363 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]364 auto initBegin = init->begin();
365 auto initEnd = init->end();
366 auto desigBegin = init->get_designations().begin();
367 auto desigEnd = init->get_designations().end();
368
[6c4ff37]369 output << "{ ";
[e4d829b]370 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]371 (*desigBegin)->accept( *visitor );
372 (*initBegin)->accept( *visitor );
[e4d829b]373 ++initBegin, ++desigBegin;
374 if ( initBegin != initEnd ) {
375 output << ", ";
376 }
377 }
[6c4ff37]378 output << " }";
[e4d829b]379 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]380 }
381
[d22e90f]382 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]383 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]384 // pseudo-output for constructor/destructor pairs
[d22e90f]385 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]386 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]387 output << ", " << endl << indent << "dtor: ";
[9857e8d]388 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]389 output << endl << --indent << "}";
[fc638d2]390 }
391
[9857e8d]392 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]393 output << constant->get_value();
[51587aa]394 }
395
[4810867]396 // *** Expressions
[9857e8d]397 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]398 extension( applicationExpr );
[8688ce1]399 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]400 const OperatorInfo * opInfo;
401 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]402 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]403 switch ( opInfo->type ) {
[51587aa]404 case OT_INDEX:
405 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]406 (*arg++)->accept( *visitor );
[6c4ff37]407 output << "[";
[9857e8d]408 (*arg)->accept( *visitor );
[6c4ff37]409 output << "]";
[51587aa]410 break;
[71f4e4f]411
[51587aa]412 case OT_CALL:
[356189a]413 // there are no intrinsic definitions of the function call operator
[51587aa]414 assert( false );
415 break;
[71f4e4f]416
[f1e012b]417 case OT_CTOR:
[c2ce2350]418 case OT_DTOR:
[356189a]419 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]420 // the expression fed into a single parameter constructor or destructor may contain side
421 // effects, so must still output this expression
[64071c2]422 output << "(";
[9857e8d]423 (*arg++)->accept( *visitor );
[60a8062]424 output << ") /* " << opInfo->inputName << " */";
[356189a]425 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]426 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]427 output << "(";
[9857e8d]428 (*arg++)->accept( *visitor );
[60a8062]429 output << opInfo->symbol;
[9857e8d]430 (*arg)->accept( *visitor );
[60a8062]431 output << ") /* " << opInfo->inputName << " */";
[356189a]432 } else {
[c2ce2350]433 // no constructors with 0 or more than 2 parameters
[356189a]434 assert( false );
[8688ce1]435 } // if
[356189a]436 break;
[f1e012b]437
[51587aa]438 case OT_PREFIX:
439 case OT_PREFIXASSIGN:
440 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]441 output << "(";
[60a8062]442 output << opInfo->symbol;
[9857e8d]443 (*arg)->accept( *visitor );
[6c4ff37]444 output << ")";
[51587aa]445 break;
[71f4e4f]446
[51587aa]447 case OT_POSTFIX:
448 case OT_POSTFIXASSIGN:
449 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]450 (*arg)->accept( *visitor );
[60a8062]451 output << opInfo->symbol;
[51587aa]452 break;
453
[f1e012b]454
[51587aa]455 case OT_INFIX:
456 case OT_INFIXASSIGN:
457 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]458 output << "(";
[9857e8d]459 (*arg++)->accept( *visitor );
[60a8062]460 output << opInfo->symbol;
[9857e8d]461 (*arg)->accept( *visitor );
[6c4ff37]462 output << ")";
[51587aa]463 break;
[71f4e4f]464
[51587aa]465 case OT_CONSTANT:
[721f17a]466 case OT_LABELADDRESS:
467 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]468 assert( false );
[3778cb2]469 } // switch
[17cd4eb]470 } else {
[9857e8d]471 varExpr->accept( *visitor );
[6c4ff37]472 output << "(";
[51587aa]473 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]474 output << ")";
[17cd4eb]475 } // if
[51587aa]476 } else {
[9857e8d]477 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]478 output << "(";
[51587aa]479 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]480 output << ")";
[51587aa]481 } // if
482 }
[71f4e4f]483
[9857e8d]484 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]485 extension( untypedExpr );
[22bc276]486 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]487 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
488 if ( opInfo ) {
[22bc276]489 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]490 switch ( opInfo->type ) {
[51587aa]491 case OT_INDEX:
[22bc276]492 assert( untypedExpr->args.size() == 2 );
[9857e8d]493 (*arg++)->accept( *visitor );
[6c4ff37]494 output << "[";
[9857e8d]495 (*arg)->accept( *visitor );
[6c4ff37]496 output << "]";
[51587aa]497 break;
[71f4e4f]498
[51587aa]499 case OT_CALL:
[f1e012b]500 assert( false );
501
[c2ce2350]502 case OT_CTOR:
503 case OT_DTOR:
[22bc276]504 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]505 // the expression fed into a single parameter constructor or destructor may contain side
506 // effects, so must still output this expression
[64071c2]507 output << "(";
[9857e8d]508 (*arg++)->accept( *visitor );
[60a8062]509 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]510 } else if ( untypedExpr->get_args().size() == 2 ) {
511 // intrinsic two parameter constructors are essentially bitwise assignment
512 output << "(";
[9857e8d]513 (*arg++)->accept( *visitor );
[60a8062]514 output << opInfo->symbol;
[9857e8d]515 (*arg)->accept( *visitor );
[60a8062]516 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]517 } else {
518 // no constructors with 0 or more than 2 parameters
[42a36d9]519 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]520 output << "(";
521 (*arg++)->accept( *visitor );
[60a8062]522 output << opInfo->symbol << "{ ";
[22bc276]523 genCommaList( arg, untypedExpr->args.end() );
[60a8062]524 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]525 } // if
[51587aa]526 break;
[71f4e4f]527
[51587aa]528 case OT_PREFIX:
529 case OT_PREFIXASSIGN:
[de62360d]530 case OT_LABELADDRESS:
[22bc276]531 assert( untypedExpr->args.size() == 1 );
[6c4ff37]532 output << "(";
[60a8062]533 output << opInfo->symbol;
[9857e8d]534 (*arg)->accept( *visitor );
[6c4ff37]535 output << ")";
[51587aa]536 break;
[71f4e4f]537
[51587aa]538 case OT_POSTFIX:
539 case OT_POSTFIXASSIGN:
[22bc276]540 assert( untypedExpr->args.size() == 1 );
[9857e8d]541 (*arg)->accept( *visitor );
[60a8062]542 output << opInfo->symbol;
[51587aa]543 break;
[71f4e4f]544
[51587aa]545 case OT_INFIX:
546 case OT_INFIXASSIGN:
[22bc276]547 assert( untypedExpr->args.size() == 2 );
[6c4ff37]548 output << "(";
[9857e8d]549 (*arg++)->accept( *visitor );
[60a8062]550 output << opInfo->symbol;
[9857e8d]551 (*arg)->accept( *visitor );
[6c4ff37]552 output << ")";
[51587aa]553 break;
[71f4e4f]554
[51587aa]555 case OT_CONSTANT:
556 // there are no intrinsic definitions of 0 or 1 as functions
557 assert( false );
[3778cb2]558 } // switch
[51587aa]559 } else {
[22bc276]560 // builtin routines
561 nameExpr->accept( *visitor );
562 output << "(";
563 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
564 output << ")";
[51587aa]565 } // if
566 } else {
[22bc276]567 untypedExpr->function->accept( *visitor );
[6c4ff37]568 output << "(";
[22bc276]569 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]570 output << ")";
[51587aa]571 } // if
572 }
[71f4e4f]573
[9857e8d]574 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]575 rangeExpr->low->accept( *visitor );
[064e3ff]576 output << " ... ";
[22bc276]577 rangeExpr->high->accept( *visitor );
[064e3ff]578 }
579
[9857e8d]580 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]581 extension( nameExpr );
[60a8062]582 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
583 if ( opInfo ) {
584 if ( opInfo->type == OT_CONSTANT ) {
585 output << opInfo->symbol;
[5ea7a22]586 } else {
[60a8062]587 output << opInfo->outputName;
[5ea7a22]588 }
[51587aa]589 } else {
[6c4ff37]590 output << nameExpr->get_name();
[51587aa]591 } // if
592 }
[71f4e4f]593
[6e50a6b]594 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
595 extension( dimensionExpr );
596 output << "/*non-type*/" << dimensionExpr->get_name();
597 }
598
[9857e8d]599 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]600 extension( addressExpr );
[6c4ff37]601 output << "(&";
[9857e8d]602 addressExpr->arg->accept( *visitor );
[6c4ff37]603 output << ")";
[51587aa]604 }
605
[9857e8d]606 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]607 extension( addressExpr );
608 output << "(&&" << addressExpr->arg << ")";
609 }
610
[9857e8d]611 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]612 extension( castExpr );
[803deb1]613 output << "(";
[906e24d]614 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]615 output << "(void)";
[d104b02]616 } else {
617 // at least one result type of cast.
618 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
619 // an lvalue cast, this has been taken out.
[803deb1]620 output << "(";
[42a36d9]621 output << genType( castExpr->get_result(), "", options );
[71f4e4f]622 output << ")";
[3778cb2]623 } // if
[da9d79b]624 castExpr->arg->accept( *visitor );
625 output << ")";
626 }
627
628 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]629 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]630 extension( castExpr );
631 output << "((" << castExpr->targetString() << " &)";
632 castExpr->arg->accept( *visitor );
[803deb1]633 output << ")";
[51587aa]634 }
[71f4e4f]635
[9857e8d]636 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]637 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]638 extension( castExpr );
639 output << "(virtual ";
[9857e8d]640 castExpr->get_arg()->accept( *visitor );
[a5f0529]641 output << ")";
642 }
643
[9857e8d]644 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]645 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]646 extension( memberExpr );
[9857e8d]647 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]648 output << ".";
[9857e8d]649 memberExpr->get_member()->accept( *visitor );
[51587aa]650 }
[71f4e4f]651
[9857e8d]652 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]653 extension( memberExpr );
[9857e8d]654 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]655 output << "." << mangleName( memberExpr->get_member() );
[51587aa]656 }
[71f4e4f]657
[9857e8d]658 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]659 extension( variableExpr );
[60a8062]660 const OperatorInfo * opInfo;
661 if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
662 output << opInfo->symbol;
[51587aa]663 } else {
[3e54399]664 if (dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())
665 && dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base) {
666 output << '(' <<genType(dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base, "", options) << ')';
667 }
[6c4ff37]668 output << mangleName( variableExpr->get_var() );
[51587aa]669 } // if
670 }
[71f4e4f]671
[9857e8d]672 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]673 assert( constantExpr->get_constant() );
[e04ef3a]674 extension( constantExpr );
[9857e8d]675 constantExpr->get_constant()->accept( *visitor );
[51587aa]676 }
[71f4e4f]677
[9857e8d]678 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]679 extension( sizeofExpr );
[6c4ff37]680 output << "sizeof(";
[51587aa]681 if ( sizeofExpr->get_isType() ) {
[42a36d9]682 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]683 } else {
[9857e8d]684 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]685 } // if
[6c4ff37]686 output << ")";
[51587aa]687 }
[47534159]688
[9857e8d]689 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]690 // use GCC extension to avoid bumping std to C11
[8e9cbb2]691 extension( alignofExpr );
[47534159]692 output << "__alignof__(";
[25a054f]693 if ( alignofExpr->get_isType() ) {
[42a36d9]694 output << genType( alignofExpr->get_type(), "", options );
[47534159]695 } else {
[9857e8d]696 alignofExpr->get_expr()->accept( *visitor );
[47534159]697 } // if
698 output << ")";
699 }
[71f4e4f]700
[9857e8d]701 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]702 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]703 output << "offsetof(";
[42a36d9]704 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]705 output << ", " << offsetofExpr->get_member();
706 output << ")";
[2a4b088]707 }
708
[9857e8d]709 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]710 // use GCC builtin
711 output << "__builtin_offsetof(";
[42a36d9]712 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]713 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]714 output << ")";
715 }
[d63eeb0]716
[9857e8d]717 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]718 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
719 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]720 }
[70a06f6]721
[9857e8d]722 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]723 extension( logicalExpr );
[6c4ff37]724 output << "(";
[9857e8d]725 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]726 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]727 output << " && ";
[51587aa]728 } else {
[6c4ff37]729 output << " || ";
[51587aa]730 } // if
[9857e8d]731 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]732 output << ")";
[51587aa]733 }
[71f4e4f]734
[9857e8d]735 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]736 extension( conditionalExpr );
[6c4ff37]737 output << "(";
[9857e8d]738 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]739 output << " ? ";
[9857e8d]740 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]741 output << " : ";
[9857e8d]742 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]743 output << ")";
[51587aa]744 }
[71f4e4f]745
[9857e8d]746 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]747 extension( commaExpr );
[6c4ff37]748 output << "(";
[42a36d9]749 if ( options.genC ) {
[8a6cf7e]750 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
751 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
752 }
[9857e8d]753 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]754 output << " , ";
[9857e8d]755 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]756 output << ")";
[51587aa]757 }
[71f4e4f]758
[9857e8d]759 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]760 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]761 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]762 }
763
[9857e8d]764 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]765 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]766 extension( tupleExpr );
[e39241b]767 output << "[";
768 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
769 output << "]";
770 }
[907eccb]771
[9857e8d]772 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]773 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]774 extension( tupleExpr );
[e39241b]775 output << "[";
776 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
777 output << "]";
778 }
[71f4e4f]779
[9857e8d]780 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]781 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]782 extension( tupleExpr );
[9857e8d]783 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]784 output << "." << tupleExpr->get_index();
785 }
786
[9857e8d]787 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]788 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
789 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
790 if ( ! options.genC ) {
791 output << genType( typeExpr->get_type(), "", options );
[e4d829b]792 }
[e39241b]793 }
[2b6c1e0]794
[9857e8d]795 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]796 if ( !asmExpr->inout.empty() ) {
[7f5566b]797 output << "[ ";
[665f432]798 output << asmExpr->inout;
[7f5566b]799 output << " ] ";
800 } // if
[665f432]801 asmExpr->constraint->accept( *visitor );
[7f5566b]802 output << " ( ";
[665f432]803 asmExpr->operand->accept( *visitor );
[7f5566b]804 output << " )";
805 }
806
[9857e8d]807 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]808 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]809 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]810 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]811 }
812
[9857e8d]813 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]814 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]815 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]816 unqExpr->get_expr()->accept( *visitor );
[d104b02]817 output << " }";
818 }
819
[9857e8d]820 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]821 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]822 output << "({" << endl;
[f7cb0bc]823 ++indent;
[3c13c03]824 unsigned int numStmts = stmts.size();
825 unsigned int i = 0;
826 for ( Statement * stmt : stmts ) {
[058f549]827 output << indent << printLabels( stmt->get_labels() );
[3c13c03]828 if ( i+1 == numStmts ) {
829 // last statement in a statement expression needs to be handled specially -
830 // cannot cast to void, otherwise the expression statement has no value
831 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]832 exprStmt->expr->accept( *visitor );
[3c13c03]833 output << ";" << endl;
834 ++i;
835 break;
836 }
837 }
[9857e8d]838 stmt->accept( *visitor );
[3c13c03]839 output << endl;
840 if ( wantSpacing( stmt ) ) {
841 output << endl;
842 } // if
843 ++i;
844 }
[f7cb0bc]845 --indent;
[3c13c03]846 output << indent << "})";
[6eb8948]847 }
848
[4e8949f]849 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]850 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]851 expr->callExpr->accept( *visitor );
852 }
853
[44b4114]854 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]855 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]856 expr->expr->accept( *visitor );
857 }
858
[0f79853]859 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]860 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]861 arg->expr->accept( *visitor );
862 }
863
[d807ca28]864 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]865 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]866 output << "_Generic(";
867 expr->control->accept( *visitor );
868 output << ", ";
869 unsigned int numAssocs = expr->associations.size();
870 unsigned int i = 0;
871 for ( GenericExpr::Association & assoc : expr->associations ) {
872 if (assoc.isDefault) {
873 output << "default: ";
874 } else {
[42a36d9]875 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]876 }
877 assoc.expr->accept( *visitor );
878 if ( i+1 != numAssocs ) {
879 output << ", ";
880 }
881 i++;
882 }
883 output << ")";
884 }
885
886
[4810867]887 // *** Statements
[9857e8d]888 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]889 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]890 output << "{" << endl;
[51587aa]891
[f7cb0bc]892 ++indent;
[51587aa]893
[7f5566b]894 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]895 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]896 (*i)->accept( *visitor );
[2b6c1e0]897
[6c4ff37]898 output << endl;
[2b6c1e0]899 if ( wantSpacing( *i ) ) {
900 output << endl;
[3778cb2]901 } // if
[8688ce1]902 } // for
[f7cb0bc]903 --indent;
[51587aa]904
[cda48b6]905 output << indent << "}";
[51587aa]906 }
907
[9857e8d]908 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]909 assert( exprStmt );
[42a36d9]910 if ( options.genC ) {
[262f085f]911 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]912 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]913 }
[9857e8d]914 exprStmt->get_expr()->accept( *visitor );
[321a2481]915 output << ";";
[51587aa]916 }
917
[9857e8d]918 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]919 output << "asm ";
920 if ( asmStmt->get_voltile() ) output << "volatile ";
921 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
922 output << "( ";
[9857e8d]923 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]924 output << " : ";
925 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
926 output << " : ";
927 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
928 output << " : ";
929 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
930 if ( ! asmStmt->get_gotolabels().empty() ) {
931 output << " : ";
932 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
933 output << *begin++;
934 if ( begin == asmStmt->get_gotolabels().end() ) break;
935 output << ", ";
936 } // for
937 } // if
[d7312ac]938 output << " );";
[7f5566b]939 }
940
[9857e8d]941 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]942 output << "asm ";
943 AsmStmt * asmStmt = asmDecl->get_stmt();
944 output << "( ";
[9857e8d]945 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]946 output << " )";
[e994912]947 }
948
[2d019af]949 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
950 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
951 }
952
[cc32d83]953 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]954 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]955 }
956
[9857e8d]957 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]958 output << "if ( ";
[9857e8d]959 ifStmt->get_condition()->accept( *visitor );
[7f5566b]960 output << " ) ";
[51587aa]961
[3b0bc16]962 ifStmt->get_then()->accept( *visitor );
[51587aa]963
[3b0bc16]964 if ( ifStmt->get_else() != 0) {
[2b6c1e0]965 output << " else ";
[3b0bc16]966 ifStmt->get_else()->accept( *visitor );
[51587aa]967 } // if
968 }
969
[9857e8d]970 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]971 output << "switch ( ";
[9857e8d]972 switchStmt->get_condition()->accept( *visitor );
[7f5566b]973 output << " ) ";
[71f4e4f]974
[d22e90f]975 output << "{" << endl;
[f7cb0bc]976 ++indent;
[9857e8d]977 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]978 --indent;
[cda48b6]979 output << indent << "}";
[51587aa]980 }
981
[9857e8d]982 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]983 updateLocation( caseStmt );
[1dcd9554]984 output << indent;
[eb3261f]985 if ( caseStmt->isDefault()) {
[2b6c1e0]986 output << "default";
[eb3261f]987 } else {
[2b6c1e0]988 output << "case ";
[9857e8d]989 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]990 } // if
[d22e90f]991 output << ":" << endl;
[71f4e4f]992
[51587aa]993 std::list<Statement *> sts = caseStmt->get_statements();
994
[f7cb0bc]995 ++indent;
[51587aa]996 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]997 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]998 (*i)->accept( *visitor );
[6c4ff37]999 output << endl;
[3778cb2]1000 } // for
[f7cb0bc]1001 --indent;
[51587aa]1002 }
1003
[9857e8d]1004 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1005 switch ( branchStmt->get_type()) {
1006 case BranchStmt::Goto:
1007 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1008 output << "goto " << branchStmt->get_target();
[71f4e4f]1009 else {
[51587aa]1010 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1011 output << "goto *";
[9857e8d]1012 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1013 } // if
1014 } // if
1015 break;
1016 case BranchStmt::Break:
[6c4ff37]1017 output << "break";
[51587aa]1018 break;
1019 case BranchStmt::Continue:
[6c4ff37]1020 output << "continue";
[51587aa]1021 break;
[7c2a7b6]1022 case BranchStmt::FallThrough:
1023 case BranchStmt::FallThroughDefault:
[42a36d9]1024 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1025 output << "fallthru";
[7c2a7b6]1026 break;
[6180274]1027 default: ; // prevent warning
[3778cb2]1028 } // switch
[7c2a7b6]1029 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1030 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1031 if ( ! branchStmt->get_target().empty() ) {
1032 output << " " << branchStmt->get_target();
1033 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1034 output << " default";
1035 }
1036 }
[2b6c1e0]1037 output << ";";
[51587aa]1038 }
1039
[9857e8d]1040 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1041 output << "return ";
[9857e8d]1042 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1043 output << ";";
[51587aa]1044 }
1045
[9857e8d]1046 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1047 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1048
1049 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1050 "throw" : "throwResume");
[daf1af8]1051 if (throwStmt->get_expr()) {
1052 output << " ";
[9857e8d]1053 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1054 }
1055 if (throwStmt->get_target()) {
1056 output << " _At ";
[9857e8d]1057 throwStmt->get_target()->accept( *visitor );
[daf1af8]1058 }
1059 output << ";";
1060 }
[e4ea10b7]1061 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1062 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1063
1064 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1065 "catch" : "catchResume");
[e4ea10b7]1066 output << "( ";
1067 stmt->decl->accept( *visitor );
1068 output << " ) ";
1069
1070 if( stmt->cond ) {
1071 output << "if/when(?) (";
1072 stmt->cond->accept( *visitor );
1073 output << ") ";
1074 }
1075 stmt->body->accept( *visitor );
1076 }
1077
1078 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1079 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1080
1081 bool first = true;
1082 for( auto & clause : stmt->clauses ) {
1083 if(first) { output << "or "; first = false; }
1084 if( clause.condition ) {
1085 output << "when(";
1086 stmt->timeout.condition->accept( *visitor );
1087 output << ") ";
1088 }
1089 output << "waitfor(";
1090 clause.target.function->accept( *visitor );
1091 for( Expression * expr : clause.target.arguments ) {
1092 output << ",";
1093 expr->accept( *visitor );
1094 }
1095 output << ") ";
1096 clause.statement->accept( *visitor );
1097 }
1098
1099 if( stmt->timeout.statement ) {
1100 output << "or ";
1101 if( stmt->timeout.condition ) {
1102 output << "when(";
1103 stmt->timeout.condition->accept( *visitor );
1104 output << ") ";
1105 }
1106 output << "timeout(";
1107 stmt->timeout.time->accept( *visitor );
1108 output << ") ";
1109 stmt->timeout.statement->accept( *visitor );
1110 }
1111
1112 if( stmt->orelse.statement ) {
1113 output << "or ";
1114 if( stmt->orelse.condition ) {
1115 output << "when(";
1116 stmt->orelse.condition->accept( *visitor );
1117 output << ")";
1118 }
1119 output << "else ";
1120 stmt->orelse.statement->accept( *visitor );
1121 }
1122 }
1123
[55d6e8de]1124 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1125 if ( ! options.genC ) {
[55d6e8de]1126 output << "with ( ";
1127 genCommaList( with->exprs.begin(), with->exprs.end() );
1128 output << " ) ";
1129 }
1130 with->stmt->accept( *visitor );
1131 }
[daf1af8]1132
[3b0bc16]1133 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1134 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1135 output << "do";
[321a2481]1136 } else {
[d7312ac]1137 output << "while (";
[3b0bc16]1138 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1139 output << ")";
[51587aa]1140 } // if
[2b6c1e0]1141 output << " ";
[51587aa]1142
[3b0bc16]1143 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1144 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1145
[cda48b6]1146 output << indent;
[51587aa]1147
[3b0bc16]1148 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1149 output << " while (";
[3b0bc16]1150 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1151 output << ");";
[51587aa]1152 } // if
1153 }
1154
[9857e8d]1155 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1156 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1157 output << "for (;";
[51587aa]1158
[321a2481]1159 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1160 forStmt->get_condition()->accept( *visitor );
[3778cb2]1161 } // if
[6c4ff37]1162 output << ";";
[51587aa]1163
[321a2481]1164 if ( forStmt->get_increment() != 0 ) {
1165 // cast the top-level expression to void to reduce gcc warnings.
1166 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1167 expr->accept( *visitor );
[3778cb2]1168 } // if
[2b6c1e0]1169 output << ") ";
[51587aa]1170
1171 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1172 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1173 forStmt->get_body()->accept( *visitor );
[51587aa]1174 } // if
1175 }
1176
[9857e8d]1177 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1178 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1179 output << "/* null statement */ ;";
[51587aa]1180 }
1181
[9857e8d]1182 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1183 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1184
[51587aa]1185 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1186 output << ";";
[51587aa]1187 } // if
1188 }
1189
[9857e8d]1190 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1191 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1192 stmt->callStmt->accept( *visitor );
1193 }
1194
[6cebfef]1195 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1196 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1197 stmt->stmt->accept( *visitor );
1198 }
1199
[dd020c0]1200 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1201 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1202 decl->get_storageClasses().print( output );
[a7c90d4]1203 } // if
[dd020c0]1204 } // CodeGenerator::handleStorageClass
[9facf3b]1205
1206 std::string genName( DeclarationWithType * decl ) {
[60a8062]1207 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1208 if ( opInfo ) {
1209 return opInfo->outputName;
[9facf3b]1210 } else {
1211 return decl->get_name();
1212 } // if
1213 }
[51b73452]1214} // namespace CodeGen
[51587aa]1215
[50377a4]1216
1217unsigned Indenter::tabsize = 2;
1218
[e149f77]1219std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) {
1220 if ( node ) {
1221 node->print( out );
1222 } else {
1223 out << "nullptr";
1224 }
1225 return out;
1226}
1227
[51587aa]1228// Local Variables: //
1229// tab-width: 4 //
1230// mode: c++ //
1231// compile-command: "make install" //
1232// End: //
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