source: src/CodeGen/CodeGenerator.cc@ 79ae13d

ADT ast-experimental pthread-emulation
Last change on this file since 79ae13d was 9d55ff6, checked in by Thierry Delisle <tdelisle@…>, 3 years ago

Hack in code gen to make 0p a constant
  • Property mode set to 100644
File size: 39.8 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...
[51b73452]19
[1931bb01]20#include "AST/Decl.hpp" // for DeclWithType
[bf2438c]21#include "Common/UniqueName.h" // for UniqueName
22#include "Common/utility.h" // for CodeLocation, toString
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
[9857e8d]275 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]276 extension( enumDecl );
277 std::list< Declaration* > &memb = enumDecl->get_members();
[d8e2a09]278 if (enumDecl->base && ! memb.empty()) {
[30d91e4]279 unsigned long long last_val = -1;
[51587aa]280 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]281 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]282 assert( obj );
[4390fb6]283 output << "static const ";
284 output << genType(enumDecl->base, "", options) << " ";
285 output << mangleName( obj ) << " ";
286 output << " = ";
[30d91e4]287 output << "(" << genType(enumDecl->base, "", options) << ")";
288 if ( (BasicType *)(enumDecl->base) && ((BasicType *)(enumDecl->base))->isWholeNumber() ) {
289 if ( obj->get_init() ) {
290 obj->get_init()->accept( *visitor );
291 last_val = ((ConstantExpr *)(((SingleInit *)(obj->init))->value))->constant.get_ival();
292 } else {
293 output << ++last_val;
294 } // if
[4390fb6]295 } else {
[30d91e4]296 if ( obj->get_init() ) {
[b99fd56]297 obj->get_init()->accept( *visitor );
[4390fb6]298 } else {
[30d91e4]299 // Should not reach here!
[4390fb6]300 }
[30d91e4]301 }
[4390fb6]302 output << ";" << endl;
[51587aa]303 } // for
[4390fb6]304 } else {
305 output << "enum ";
306 genAttributes( enumDecl->get_attributes() );
307
308 output << enumDecl->get_name();
309
310 if ( ! memb.empty() ) {
311 output << " {" << endl;
312
313 ++indent;
314 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
315 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
316 assert( obj );
317 output << indent << mangleName( obj );
318 if ( obj->get_init() ) {
319 output << " = ";
320 obj->get_init()->accept( *visitor );
321 } // if
322 output << "," << endl;
323 } // for
[f7cb0bc]324 --indent;
[cda48b6]325 output << indent << "}";
[4390fb6]326 } // if
[51587aa]327 } // if
328 }
[71f4e4f]329
[9857e8d]330 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]331 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]332 extension( traitDecl );
333 handleAggregate( traitDecl, "trait " );
334 }
[71f4e4f]335
[9857e8d]336 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]337 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]338 output << "typedef ";
[42a36d9]339 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]340 }
[71f4e4f]341
[9857e8d]342 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]343 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]344 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]345 if ( typeDecl->sized ) {
[ab4bff5]346 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]347 }
[ab4bff5]348 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]349 output << " | { ";
[ab4bff5]350 for ( DeclarationWithType * assert : typeDecl->assertions ) {
351 assert->accept( *visitor );
352 output << "; ";
353 }
[a0c7dc36]354 output << " }";
[e39241b]355 }
[51587aa]356 }
357
[92fea32]358 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
359 output << "_Static_assert(";
360 assertDecl->condition->accept( *visitor );
361 output << ", ";
362 assertDecl->message->accept( *visitor );
363 output << ")";
364 }
365
[9857e8d]366 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]367 std::list< Expression * > designators = designation->get_designators();
[e45215c]368 if ( designators.size() == 0 ) return;
[e4d829b]369 for ( Expression * des : designators ) {
[62423350]370 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
371 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
372 output << ".";
[9857e8d]373 des->accept( *visitor );
[e4d829b]374 } else {
[3e54399]375 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]376 output << "[";
[9857e8d]377 des->accept( *visitor );
[62423350]378 output << "]";
[3778cb2]379 } // if
380 } // for
[3eb1653]381 output << " = ";
[e45215c]382 }
383
[9857e8d]384 void CodeGenerator::postvisit( SingleInit * init ) {
385 init->get_value()->accept( *visitor );
[51587aa]386 }
387
[9857e8d]388 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]389 auto initBegin = init->begin();
390 auto initEnd = init->end();
391 auto desigBegin = init->get_designations().begin();
392 auto desigEnd = init->get_designations().end();
393
[6c4ff37]394 output << "{ ";
[e4d829b]395 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]396 (*desigBegin)->accept( *visitor );
397 (*initBegin)->accept( *visitor );
[e4d829b]398 ++initBegin, ++desigBegin;
399 if ( initBegin != initEnd ) {
400 output << ", ";
401 }
402 }
[6c4ff37]403 output << " }";
[e4d829b]404 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]405 }
406
[d22e90f]407 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]408 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]409 // pseudo-output for constructor/destructor pairs
[d22e90f]410 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]411 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]412 output << ", " << endl << indent << "dtor: ";
[9857e8d]413 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]414 output << endl << --indent << "}";
[fc638d2]415 }
416
[9857e8d]417 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]418 output << constant->get_value();
[51587aa]419 }
420
[4810867]421 // *** Expressions
[9857e8d]422 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]423 extension( applicationExpr );
[8688ce1]424 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]425 const OperatorInfo * opInfo;
426 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]427 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]428 switch ( opInfo->type ) {
[51587aa]429 case OT_INDEX:
430 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]431 (*arg++)->accept( *visitor );
[6c4ff37]432 output << "[";
[9857e8d]433 (*arg)->accept( *visitor );
[6c4ff37]434 output << "]";
[51587aa]435 break;
[71f4e4f]436
[51587aa]437 case OT_CALL:
[356189a]438 // there are no intrinsic definitions of the function call operator
[51587aa]439 assert( false );
440 break;
[71f4e4f]441
[f1e012b]442 case OT_CTOR:
[c2ce2350]443 case OT_DTOR:
[356189a]444 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]445 // the expression fed into a single parameter constructor or destructor may contain side
446 // effects, so must still output this expression
[64071c2]447 output << "(";
[9857e8d]448 (*arg++)->accept( *visitor );
[60a8062]449 output << ") /* " << opInfo->inputName << " */";
[356189a]450 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]451 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]452 output << "(";
[9857e8d]453 (*arg++)->accept( *visitor );
[60a8062]454 output << opInfo->symbol;
[9857e8d]455 (*arg)->accept( *visitor );
[60a8062]456 output << ") /* " << opInfo->inputName << " */";
[356189a]457 } else {
[c2ce2350]458 // no constructors with 0 or more than 2 parameters
[356189a]459 assert( false );
[8688ce1]460 } // if
[356189a]461 break;
[f1e012b]462
[51587aa]463 case OT_PREFIX:
464 case OT_PREFIXASSIGN:
465 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]466 output << "(";
[60a8062]467 output << opInfo->symbol;
[9857e8d]468 (*arg)->accept( *visitor );
[6c4ff37]469 output << ")";
[51587aa]470 break;
[71f4e4f]471
[51587aa]472 case OT_POSTFIX:
473 case OT_POSTFIXASSIGN:
474 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]475 (*arg)->accept( *visitor );
[60a8062]476 output << opInfo->symbol;
[51587aa]477 break;
478
[f1e012b]479
[51587aa]480 case OT_INFIX:
481 case OT_INFIXASSIGN:
482 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]483 output << "(";
[9857e8d]484 (*arg++)->accept( *visitor );
[60a8062]485 output << opInfo->symbol;
[9857e8d]486 (*arg)->accept( *visitor );
[6c4ff37]487 output << ")";
[51587aa]488 break;
[71f4e4f]489
[51587aa]490 case OT_CONSTANT:
[721f17a]491 case OT_LABELADDRESS:
492 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]493 assert( false );
[3778cb2]494 } // switch
[9d55ff6]495 } else if( varExpr->get_var()->get_linkage() == LinkageSpec::BuiltinCFA && varExpr->get_var()->get_name() == "intptr" ) {
496 // THIS is a hack to make it a constant until a proper constexpr solution is created
497 output << "((void*)";
498 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
499 (*arg++)->accept( *visitor );
500 output << ")";
[17cd4eb]501 } else {
[9857e8d]502 varExpr->accept( *visitor );
[6c4ff37]503 output << "(";
[51587aa]504 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]505 output << ")";
[17cd4eb]506 } // if
[51587aa]507 } else {
[9857e8d]508 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]509 output << "(";
[51587aa]510 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]511 output << ")";
[51587aa]512 } // if
513 }
[71f4e4f]514
[9857e8d]515 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]516 extension( untypedExpr );
[22bc276]517 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]518 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
519 if ( opInfo ) {
[22bc276]520 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]521 switch ( opInfo->type ) {
[51587aa]522 case OT_INDEX:
[22bc276]523 assert( untypedExpr->args.size() == 2 );
[9857e8d]524 (*arg++)->accept( *visitor );
[6c4ff37]525 output << "[";
[9857e8d]526 (*arg)->accept( *visitor );
[6c4ff37]527 output << "]";
[51587aa]528 break;
[71f4e4f]529
[51587aa]530 case OT_CALL:
[f1e012b]531 assert( false );
532
[c2ce2350]533 case OT_CTOR:
534 case OT_DTOR:
[22bc276]535 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]536 // the expression fed into a single parameter constructor or destructor may contain side
537 // effects, so must still output this expression
[64071c2]538 output << "(";
[9857e8d]539 (*arg++)->accept( *visitor );
[60a8062]540 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]541 } else if ( untypedExpr->get_args().size() == 2 ) {
542 // intrinsic two parameter constructors are essentially bitwise assignment
543 output << "(";
[9857e8d]544 (*arg++)->accept( *visitor );
[60a8062]545 output << opInfo->symbol;
[9857e8d]546 (*arg)->accept( *visitor );
[60a8062]547 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]548 } else {
549 // no constructors with 0 or more than 2 parameters
[42a36d9]550 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]551 output << "(";
552 (*arg++)->accept( *visitor );
[60a8062]553 output << opInfo->symbol << "{ ";
[22bc276]554 genCommaList( arg, untypedExpr->args.end() );
[60a8062]555 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]556 } // if
[51587aa]557 break;
[71f4e4f]558
[51587aa]559 case OT_PREFIX:
560 case OT_PREFIXASSIGN:
[de62360d]561 case OT_LABELADDRESS:
[22bc276]562 assert( untypedExpr->args.size() == 1 );
[6c4ff37]563 output << "(";
[60a8062]564 output << opInfo->symbol;
[9857e8d]565 (*arg)->accept( *visitor );
[6c4ff37]566 output << ")";
[51587aa]567 break;
[71f4e4f]568
[51587aa]569 case OT_POSTFIX:
570 case OT_POSTFIXASSIGN:
[22bc276]571 assert( untypedExpr->args.size() == 1 );
[9857e8d]572 (*arg)->accept( *visitor );
[60a8062]573 output << opInfo->symbol;
[51587aa]574 break;
[71f4e4f]575
[51587aa]576 case OT_INFIX:
577 case OT_INFIXASSIGN:
[22bc276]578 assert( untypedExpr->args.size() == 2 );
[6c4ff37]579 output << "(";
[9857e8d]580 (*arg++)->accept( *visitor );
[60a8062]581 output << opInfo->symbol;
[9857e8d]582 (*arg)->accept( *visitor );
[6c4ff37]583 output << ")";
[51587aa]584 break;
[71f4e4f]585
[51587aa]586 case OT_CONSTANT:
587 // there are no intrinsic definitions of 0 or 1 as functions
588 assert( false );
[3778cb2]589 } // switch
[51587aa]590 } else {
[22bc276]591 // builtin routines
592 nameExpr->accept( *visitor );
593 output << "(";
594 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
595 output << ")";
[51587aa]596 } // if
597 } else {
[22bc276]598 untypedExpr->function->accept( *visitor );
[6c4ff37]599 output << "(";
[22bc276]600 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]601 output << ")";
[51587aa]602 } // if
603 }
[71f4e4f]604
[9857e8d]605 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]606 rangeExpr->low->accept( *visitor );
[064e3ff]607 output << " ... ";
[22bc276]608 rangeExpr->high->accept( *visitor );
[064e3ff]609 }
610
[9857e8d]611 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]612 extension( nameExpr );
[60a8062]613 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
614 if ( opInfo ) {
615 if ( opInfo->type == OT_CONSTANT ) {
616 output << opInfo->symbol;
[5ea7a22]617 } else {
[60a8062]618 output << opInfo->outputName;
[5ea7a22]619 }
[51587aa]620 } else {
[6c4ff37]621 output << nameExpr->get_name();
[51587aa]622 } // if
623 }
[71f4e4f]624
[6e50a6b]625 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
626 extension( dimensionExpr );
627 output << "/*non-type*/" << dimensionExpr->get_name();
628 }
629
[9857e8d]630 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]631 extension( addressExpr );
[6c4ff37]632 output << "(&";
[9857e8d]633 addressExpr->arg->accept( *visitor );
[6c4ff37]634 output << ")";
[51587aa]635 }
636
[9857e8d]637 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]638 extension( addressExpr );
639 output << "(&&" << addressExpr->arg << ")";
640 }
641
[9857e8d]642 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]643 extension( castExpr );
[803deb1]644 output << "(";
[906e24d]645 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]646 output << "(void)";
[d104b02]647 } else {
648 // at least one result type of cast.
649 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
650 // an lvalue cast, this has been taken out.
[803deb1]651 output << "(";
[42a36d9]652 output << genType( castExpr->get_result(), "", options );
[71f4e4f]653 output << ")";
[3778cb2]654 } // if
[da9d79b]655 castExpr->arg->accept( *visitor );
656 output << ")";
657 }
658
659 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]660 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]661 extension( castExpr );
662 output << "((" << castExpr->targetString() << " &)";
663 castExpr->arg->accept( *visitor );
[803deb1]664 output << ")";
[51587aa]665 }
[71f4e4f]666
[9857e8d]667 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]668 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]669 extension( castExpr );
670 output << "(virtual ";
[9857e8d]671 castExpr->get_arg()->accept( *visitor );
[a5f0529]672 output << ")";
673 }
674
[9857e8d]675 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]676 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]677 extension( memberExpr );
[9857e8d]678 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]679 output << ".";
[9857e8d]680 memberExpr->get_member()->accept( *visitor );
[51587aa]681 }
[71f4e4f]682
[9857e8d]683 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]684 extension( memberExpr );
[9857e8d]685 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]686 output << "." << mangleName( memberExpr->get_member() );
[51587aa]687 }
[71f4e4f]688
[9857e8d]689 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]690 extension( variableExpr );
[60a8062]691 const OperatorInfo * opInfo;
[b99fd56]692 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
693 output << "0";
694 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]695 output << opInfo->symbol;
[51587aa]696 } else {
[b99fd56]697 // if (dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())
[4390fb6]698 // && dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base) {
699 // output << '(' <<genType(dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base, "", options) << ')';
700 // }
[6c4ff37]701 output << mangleName( variableExpr->get_var() );
[51587aa]702 } // if
703 }
[71f4e4f]704
[9857e8d]705 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]706 assert( constantExpr->get_constant() );
[e04ef3a]707 extension( constantExpr );
[9857e8d]708 constantExpr->get_constant()->accept( *visitor );
[51587aa]709 }
[71f4e4f]710
[9857e8d]711 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]712 extension( sizeofExpr );
[6c4ff37]713 output << "sizeof(";
[51587aa]714 if ( sizeofExpr->get_isType() ) {
[42a36d9]715 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]716 } else {
[9857e8d]717 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]718 } // if
[6c4ff37]719 output << ")";
[51587aa]720 }
[47534159]721
[9857e8d]722 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]723 // use GCC extension to avoid bumping std to C11
[8e9cbb2]724 extension( alignofExpr );
[47534159]725 output << "__alignof__(";
[25a054f]726 if ( alignofExpr->get_isType() ) {
[42a36d9]727 output << genType( alignofExpr->get_type(), "", options );
[47534159]728 } else {
[9857e8d]729 alignofExpr->get_expr()->accept( *visitor );
[47534159]730 } // if
731 output << ")";
732 }
[71f4e4f]733
[9857e8d]734 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]735 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]736 output << "offsetof(";
[42a36d9]737 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]738 output << ", " << offsetofExpr->get_member();
739 output << ")";
[2a4b088]740 }
741
[9857e8d]742 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]743 // use GCC builtin
744 output << "__builtin_offsetof(";
[42a36d9]745 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]746 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]747 output << ")";
748 }
[d63eeb0]749
[9857e8d]750 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]751 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
752 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]753 }
[70a06f6]754
[9857e8d]755 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]756 extension( logicalExpr );
[6c4ff37]757 output << "(";
[9857e8d]758 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]759 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]760 output << " && ";
[51587aa]761 } else {
[6c4ff37]762 output << " || ";
[51587aa]763 } // if
[9857e8d]764 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]765 output << ")";
[51587aa]766 }
[71f4e4f]767
[9857e8d]768 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]769 extension( conditionalExpr );
[6c4ff37]770 output << "(";
[9857e8d]771 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]772 output << " ? ";
[9857e8d]773 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]774 output << " : ";
[9857e8d]775 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]776 output << ")";
[51587aa]777 }
[71f4e4f]778
[9857e8d]779 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]780 extension( commaExpr );
[6c4ff37]781 output << "(";
[42a36d9]782 if ( options.genC ) {
[8a6cf7e]783 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
784 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
785 }
[9857e8d]786 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]787 output << " , ";
[9857e8d]788 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]789 output << ")";
[51587aa]790 }
[71f4e4f]791
[9857e8d]792 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]793 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]794 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]795 }
796
[9857e8d]797 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]798 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]799 extension( tupleExpr );
[e39241b]800 output << "[";
801 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
802 output << "]";
803 }
[907eccb]804
[9857e8d]805 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]806 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]807 extension( tupleExpr );
[e39241b]808 output << "[";
809 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
810 output << "]";
811 }
[71f4e4f]812
[9857e8d]813 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]814 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]815 extension( tupleExpr );
[9857e8d]816 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]817 output << "." << tupleExpr->get_index();
818 }
819
[9857e8d]820 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]821 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
822 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
823 if ( ! options.genC ) {
824 output << genType( typeExpr->get_type(), "", options );
[e4d829b]825 }
[e39241b]826 }
[2b6c1e0]827
[9857e8d]828 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]829 if ( !asmExpr->inout.empty() ) {
[7f5566b]830 output << "[ ";
[665f432]831 output << asmExpr->inout;
[7f5566b]832 output << " ] ";
833 } // if
[665f432]834 asmExpr->constraint->accept( *visitor );
[7f5566b]835 output << " ( ";
[665f432]836 asmExpr->operand->accept( *visitor );
[7f5566b]837 output << " )";
838 }
839
[9857e8d]840 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]841 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]842 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]843 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]844 }
845
[9857e8d]846 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]847 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]848 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]849 unqExpr->get_expr()->accept( *visitor );
[d104b02]850 output << " }";
851 }
852
[9857e8d]853 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]854 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]855 output << "({" << endl;
[f7cb0bc]856 ++indent;
[3c13c03]857 unsigned int numStmts = stmts.size();
858 unsigned int i = 0;
859 for ( Statement * stmt : stmts ) {
[058f549]860 output << indent << printLabels( stmt->get_labels() );
[3c13c03]861 if ( i+1 == numStmts ) {
862 // last statement in a statement expression needs to be handled specially -
863 // cannot cast to void, otherwise the expression statement has no value
864 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]865 exprStmt->expr->accept( *visitor );
[3c13c03]866 output << ";" << endl;
867 ++i;
868 break;
869 }
870 }
[9857e8d]871 stmt->accept( *visitor );
[3c13c03]872 output << endl;
873 if ( wantSpacing( stmt ) ) {
874 output << endl;
875 } // if
876 ++i;
877 }
[f7cb0bc]878 --indent;
[3c13c03]879 output << indent << "})";
[6eb8948]880 }
881
[4e8949f]882 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]883 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]884 expr->callExpr->accept( *visitor );
885 }
886
[44b4114]887 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]888 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]889 expr->expr->accept( *visitor );
890 }
891
[0f79853]892 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]893 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]894 arg->expr->accept( *visitor );
895 }
896
[d807ca28]897 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]898 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]899 output << "_Generic(";
900 expr->control->accept( *visitor );
901 output << ", ";
902 unsigned int numAssocs = expr->associations.size();
903 unsigned int i = 0;
904 for ( GenericExpr::Association & assoc : expr->associations ) {
905 if (assoc.isDefault) {
906 output << "default: ";
907 } else {
[42a36d9]908 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]909 }
910 assoc.expr->accept( *visitor );
911 if ( i+1 != numAssocs ) {
912 output << ", ";
913 }
914 i++;
915 }
916 output << ")";
917 }
918
919
[4810867]920 // *** Statements
[9857e8d]921 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]922 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]923 output << "{" << endl;
[51587aa]924
[f7cb0bc]925 ++indent;
[51587aa]926
[7f5566b]927 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]928 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]929 (*i)->accept( *visitor );
[2b6c1e0]930
[6c4ff37]931 output << endl;
[2b6c1e0]932 if ( wantSpacing( *i ) ) {
933 output << endl;
[3778cb2]934 } // if
[8688ce1]935 } // for
[f7cb0bc]936 --indent;
[51587aa]937
[cda48b6]938 output << indent << "}";
[51587aa]939 }
940
[9857e8d]941 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]942 assert( exprStmt );
[42a36d9]943 if ( options.genC ) {
[262f085f]944 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]945 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]946 }
[9857e8d]947 exprStmt->get_expr()->accept( *visitor );
[3eb1653]948 output << ";";
[51587aa]949 }
950
[9857e8d]951 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]952 output << "asm ";
953 if ( asmStmt->get_voltile() ) output << "volatile ";
954 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
955 output << "( ";
[9857e8d]956 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]957 output << " : ";
958 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
959 output << " : ";
960 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
961 output << " : ";
962 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
963 if ( ! asmStmt->get_gotolabels().empty() ) {
964 output << " : ";
965 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
966 output << *begin++;
967 if ( begin == asmStmt->get_gotolabels().end() ) break;
968 output << ", ";
969 } // for
970 } // if
[d7312ac]971 output << " );";
[7f5566b]972 }
973
[9857e8d]974 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]975 output << "asm ";
976 AsmStmt * asmStmt = asmDecl->get_stmt();
977 output << "( ";
[9857e8d]978 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]979 output << " )";
[e994912]980 }
981
[2d019af]982 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
983 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
984 }
985
[cc32d83]986 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]987 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]988 }
989
[9857e8d]990 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]991 output << "if ( ";
[9857e8d]992 ifStmt->get_condition()->accept( *visitor );
[7f5566b]993 output << " ) ";
[51587aa]994
[3b0bc16]995 ifStmt->get_then()->accept( *visitor );
[51587aa]996
[3b0bc16]997 if ( ifStmt->get_else() != 0) {
[2b6c1e0]998 output << " else ";
[3b0bc16]999 ifStmt->get_else()->accept( *visitor );
[51587aa]1000 } // if
1001 }
1002
[9857e8d]1003 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]1004 output << "switch ( ";
[9857e8d]1005 switchStmt->get_condition()->accept( *visitor );
[7f5566b]1006 output << " ) ";
[71f4e4f]1007
[d22e90f]1008 output << "{" << endl;
[f7cb0bc]1009 ++indent;
[9857e8d]1010 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1011 --indent;
[cda48b6]1012 output << indent << "}";
[51587aa]1013 }
1014
[9857e8d]1015 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1016 updateLocation( caseStmt );
[1dcd9554]1017 output << indent;
[eb3261f]1018 if ( caseStmt->isDefault()) {
[2b6c1e0]1019 output << "default";
[eb3261f]1020 } else {
[2b6c1e0]1021 output << "case ";
[9857e8d]1022 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1023 } // if
[d22e90f]1024 output << ":" << endl;
[71f4e4f]1025
[51587aa]1026 std::list<Statement *> sts = caseStmt->get_statements();
1027
[f7cb0bc]1028 ++indent;
[51587aa]1029 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1030 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1031 (*i)->accept( *visitor );
[6c4ff37]1032 output << endl;
[3778cb2]1033 } // for
[f7cb0bc]1034 --indent;
[51587aa]1035 }
1036
[9857e8d]1037 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1038 switch ( branchStmt->get_type()) {
1039 case BranchStmt::Goto:
1040 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1041 output << "goto " << branchStmt->get_target();
[71f4e4f]1042 else {
[51587aa]1043 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1044 output << "goto *";
[9857e8d]1045 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1046 } // if
1047 } // if
1048 break;
1049 case BranchStmt::Break:
[6c4ff37]1050 output << "break";
[51587aa]1051 break;
1052 case BranchStmt::Continue:
[6c4ff37]1053 output << "continue";
[51587aa]1054 break;
[7c2a7b6]1055 case BranchStmt::FallThrough:
1056 case BranchStmt::FallThroughDefault:
[42a36d9]1057 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1058 output << "fallthru";
[7c2a7b6]1059 break;
[6180274]1060 default: ; // prevent warning
[3778cb2]1061 } // switch
[7c2a7b6]1062 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1063 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1064 if ( ! branchStmt->get_target().empty() ) {
1065 output << " " << branchStmt->get_target();
1066 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1067 output << " default";
1068 }
1069 }
[2b6c1e0]1070 output << ";";
[51587aa]1071 }
1072
[9857e8d]1073 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1074 output << "return ";
[9857e8d]1075 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1076 output << ";";
[51587aa]1077 }
1078
[9857e8d]1079 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1080 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1081
1082 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1083 "throw" : "throwResume");
[daf1af8]1084 if (throwStmt->get_expr()) {
1085 output << " ";
[9857e8d]1086 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1087 }
1088 if (throwStmt->get_target()) {
1089 output << " _At ";
[9857e8d]1090 throwStmt->get_target()->accept( *visitor );
[daf1af8]1091 }
1092 output << ";";
1093 }
[e4ea10b7]1094 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1095 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1096
1097 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1098 "catch" : "catchResume");
[e4ea10b7]1099 output << "( ";
1100 stmt->decl->accept( *visitor );
1101 output << " ) ";
1102
1103 if( stmt->cond ) {
1104 output << "if/when(?) (";
1105 stmt->cond->accept( *visitor );
1106 output << ") ";
1107 }
1108 stmt->body->accept( *visitor );
1109 }
1110
1111 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1112 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1113
1114 bool first = true;
1115 for( auto & clause : stmt->clauses ) {
1116 if(first) { output << "or "; first = false; }
1117 if( clause.condition ) {
1118 output << "when(";
1119 stmt->timeout.condition->accept( *visitor );
1120 output << ") ";
1121 }
1122 output << "waitfor(";
1123 clause.target.function->accept( *visitor );
1124 for( Expression * expr : clause.target.arguments ) {
1125 output << ",";
1126 expr->accept( *visitor );
1127 }
1128 output << ") ";
1129 clause.statement->accept( *visitor );
1130 }
1131
1132 if( stmt->timeout.statement ) {
1133 output << "or ";
1134 if( stmt->timeout.condition ) {
1135 output << "when(";
1136 stmt->timeout.condition->accept( *visitor );
1137 output << ") ";
1138 }
1139 output << "timeout(";
1140 stmt->timeout.time->accept( *visitor );
1141 output << ") ";
1142 stmt->timeout.statement->accept( *visitor );
1143 }
1144
1145 if( stmt->orelse.statement ) {
1146 output << "or ";
1147 if( stmt->orelse.condition ) {
1148 output << "when(";
1149 stmt->orelse.condition->accept( *visitor );
1150 output << ")";
1151 }
1152 output << "else ";
1153 stmt->orelse.statement->accept( *visitor );
1154 }
1155 }
1156
[55d6e8de]1157 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1158 if ( ! options.genC ) {
[55d6e8de]1159 output << "with ( ";
1160 genCommaList( with->exprs.begin(), with->exprs.end() );
1161 output << " ) ";
1162 }
1163 with->stmt->accept( *visitor );
1164 }
[daf1af8]1165
[3b0bc16]1166 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1167 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1168 output << "do";
[321a2481]1169 } else {
[d7312ac]1170 output << "while (";
[3b0bc16]1171 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1172 output << ")";
[51587aa]1173 } // if
[2b6c1e0]1174 output << " ";
[51587aa]1175
[3b0bc16]1176 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1177 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1178
[cda48b6]1179 output << indent;
[51587aa]1180
[3b0bc16]1181 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1182 output << " while (";
[3b0bc16]1183 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1184 output << ");";
[51587aa]1185 } // if
1186 }
1187
[9857e8d]1188 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1189 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1190 output << "for (;";
[51587aa]1191
[321a2481]1192 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1193 forStmt->get_condition()->accept( *visitor );
[3778cb2]1194 } // if
[6c4ff37]1195 output << ";";
[51587aa]1196
[321a2481]1197 if ( forStmt->get_increment() != 0 ) {
1198 // cast the top-level expression to void to reduce gcc warnings.
1199 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1200 expr->accept( *visitor );
[3778cb2]1201 } // if
[2b6c1e0]1202 output << ") ";
[51587aa]1203
1204 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1205 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1206 forStmt->get_body()->accept( *visitor );
[51587aa]1207 } // if
1208 }
1209
[9857e8d]1210 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1211 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1212 output << "/* null statement */ ;";
[51587aa]1213 }
1214
[9857e8d]1215 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1216 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1217
[51587aa]1218 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1219 output << ";";
[51587aa]1220 } // if
1221 }
1222
[9857e8d]1223 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1224 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1225 stmt->callStmt->accept( *visitor );
1226 }
1227
[6cebfef]1228 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1229 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1230 stmt->stmt->accept( *visitor );
1231 }
1232
[dd020c0]1233 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1234 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1235 decl->get_storageClasses().print( output );
[a7c90d4]1236 } // if
[dd020c0]1237 } // CodeGenerator::handleStorageClass
[9facf3b]1238
1239 std::string genName( DeclarationWithType * decl ) {
[60a8062]1240 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1241 if ( opInfo ) {
1242 return opInfo->outputName;
[9facf3b]1243 } else {
1244 return decl->get_name();
1245 } // if
1246 }
[1931bb01]1247
1248std::string genName( ast::DeclWithType const * decl ) {
1249 if ( const OperatorInfo * opInfo = operatorLookup( decl->name ) ) {
1250 return opInfo->outputName;
1251 } else {
1252 return decl->name;
1253 }
1254}
1255
[51b73452]1256} // namespace CodeGen
[51587aa]1257
1258// Local Variables: //
1259// tab-width: 4 //
1260// mode: c++ //
1261// compile-command: "make install" //
1262// End: //
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