source: src/CodeGen/CodeGenerator.cc@ b0d9ff7

ADT ast-experimental pthread-emulation qualifiedEnum
Last change on this file since b0d9ff7 was b0d9ff7, checked in by JiadaL <j82liang@…>, 3 years ago

Fix up the QualifiedNameExpr. It should now work on both old AST and new AST. There are some known bugs to fix so make all-tests will fail.
  • Property mode set to 100644
File size: 39.4 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 );
[d958834b]291 // last_val = ((ConstantExpr *)(((SingleInit *)(obj->init))->value))->constant.get_ival();
[30d91e4]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
[17cd4eb]495 } else {
[9857e8d]496 varExpr->accept( *visitor );
[6c4ff37]497 output << "(";
[51587aa]498 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]499 output << ")";
[17cd4eb]500 } // if
[51587aa]501 } else {
[9857e8d]502 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]503 output << "(";
[51587aa]504 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]505 output << ")";
[51587aa]506 } // if
507 }
[71f4e4f]508
[9857e8d]509 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]510 extension( untypedExpr );
[22bc276]511 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]512 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
513 if ( opInfo ) {
[22bc276]514 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]515 switch ( opInfo->type ) {
[51587aa]516 case OT_INDEX:
[22bc276]517 assert( untypedExpr->args.size() == 2 );
[9857e8d]518 (*arg++)->accept( *visitor );
[6c4ff37]519 output << "[";
[9857e8d]520 (*arg)->accept( *visitor );
[6c4ff37]521 output << "]";
[51587aa]522 break;
[71f4e4f]523
[51587aa]524 case OT_CALL:
[f1e012b]525 assert( false );
526
[c2ce2350]527 case OT_CTOR:
528 case OT_DTOR:
[22bc276]529 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]530 // the expression fed into a single parameter constructor or destructor may contain side
531 // effects, so must still output this expression
[64071c2]532 output << "(";
[9857e8d]533 (*arg++)->accept( *visitor );
[60a8062]534 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]535 } else if ( untypedExpr->get_args().size() == 2 ) {
536 // intrinsic two parameter constructors are essentially bitwise assignment
537 output << "(";
[9857e8d]538 (*arg++)->accept( *visitor );
[60a8062]539 output << opInfo->symbol;
[9857e8d]540 (*arg)->accept( *visitor );
[60a8062]541 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]542 } else {
543 // no constructors with 0 or more than 2 parameters
[42a36d9]544 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]545 output << "(";
546 (*arg++)->accept( *visitor );
[60a8062]547 output << opInfo->symbol << "{ ";
[22bc276]548 genCommaList( arg, untypedExpr->args.end() );
[60a8062]549 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]550 } // if
[51587aa]551 break;
[71f4e4f]552
[51587aa]553 case OT_PREFIX:
554 case OT_PREFIXASSIGN:
[de62360d]555 case OT_LABELADDRESS:
[22bc276]556 assert( untypedExpr->args.size() == 1 );
[6c4ff37]557 output << "(";
[60a8062]558 output << opInfo->symbol;
[9857e8d]559 (*arg)->accept( *visitor );
[6c4ff37]560 output << ")";
[51587aa]561 break;
[71f4e4f]562
[51587aa]563 case OT_POSTFIX:
564 case OT_POSTFIXASSIGN:
[22bc276]565 assert( untypedExpr->args.size() == 1 );
[9857e8d]566 (*arg)->accept( *visitor );
[60a8062]567 output << opInfo->symbol;
[51587aa]568 break;
[71f4e4f]569
[51587aa]570 case OT_INFIX:
571 case OT_INFIXASSIGN:
[22bc276]572 assert( untypedExpr->args.size() == 2 );
[6c4ff37]573 output << "(";
[9857e8d]574 (*arg++)->accept( *visitor );
[60a8062]575 output << opInfo->symbol;
[9857e8d]576 (*arg)->accept( *visitor );
[6c4ff37]577 output << ")";
[51587aa]578 break;
[71f4e4f]579
[51587aa]580 case OT_CONSTANT:
581 // there are no intrinsic definitions of 0 or 1 as functions
582 assert( false );
[3778cb2]583 } // switch
[51587aa]584 } else {
[22bc276]585 // builtin routines
586 nameExpr->accept( *visitor );
587 output << "(";
588 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
589 output << ")";
[51587aa]590 } // if
591 } else {
[22bc276]592 untypedExpr->function->accept( *visitor );
[6c4ff37]593 output << "(";
[22bc276]594 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]595 output << ")";
[51587aa]596 } // if
597 }
[71f4e4f]598
[9857e8d]599 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]600 rangeExpr->low->accept( *visitor );
[064e3ff]601 output << " ... ";
[22bc276]602 rangeExpr->high->accept( *visitor );
[064e3ff]603 }
604
[9857e8d]605 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]606 extension( nameExpr );
[60a8062]607 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
608 if ( opInfo ) {
609 if ( opInfo->type == OT_CONSTANT ) {
610 output << opInfo->symbol;
[5ea7a22]611 } else {
[60a8062]612 output << opInfo->outputName;
[5ea7a22]613 }
[51587aa]614 } else {
[6c4ff37]615 output << nameExpr->get_name();
[51587aa]616 } // if
617 }
[71f4e4f]618
[6e50a6b]619 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
620 extension( dimensionExpr );
621 output << "/*non-type*/" << dimensionExpr->get_name();
622 }
623
[9857e8d]624 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]625 extension( addressExpr );
[6c4ff37]626 output << "(&";
[9857e8d]627 addressExpr->arg->accept( *visitor );
[6c4ff37]628 output << ")";
[51587aa]629 }
630
[9857e8d]631 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]632 extension( addressExpr );
633 output << "(&&" << addressExpr->arg << ")";
634 }
635
[9857e8d]636 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]637 extension( castExpr );
[803deb1]638 output << "(";
[906e24d]639 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]640 output << "(void)";
[d104b02]641 } else {
642 // at least one result type of cast.
643 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
644 // an lvalue cast, this has been taken out.
[803deb1]645 output << "(";
[42a36d9]646 output << genType( castExpr->get_result(), "", options );
[71f4e4f]647 output << ")";
[3778cb2]648 } // if
[da9d79b]649 castExpr->arg->accept( *visitor );
650 output << ")";
651 }
652
653 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]654 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]655 extension( castExpr );
656 output << "((" << castExpr->targetString() << " &)";
657 castExpr->arg->accept( *visitor );
[803deb1]658 output << ")";
[51587aa]659 }
[71f4e4f]660
[9857e8d]661 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]662 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]663 extension( castExpr );
664 output << "(virtual ";
[9857e8d]665 castExpr->get_arg()->accept( *visitor );
[a5f0529]666 output << ")";
667 }
668
[9857e8d]669 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]670 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]671 extension( memberExpr );
[9857e8d]672 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]673 output << ".";
[9857e8d]674 memberExpr->get_member()->accept( *visitor );
[51587aa]675 }
[71f4e4f]676
[9857e8d]677 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]678 extension( memberExpr );
[9857e8d]679 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]680 output << "." << mangleName( memberExpr->get_member() );
[51587aa]681 }
[71f4e4f]682
[9857e8d]683 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]684 extension( variableExpr );
[60a8062]685 const OperatorInfo * opInfo;
[b99fd56]686 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
687 output << "0";
688 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]689 output << opInfo->symbol;
[51587aa]690 } else {
[6c4ff37]691 output << mangleName( variableExpr->get_var() );
[51587aa]692 } // if
693 }
[71f4e4f]694
[9857e8d]695 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]696 assert( constantExpr->get_constant() );
[e04ef3a]697 extension( constantExpr );
[9857e8d]698 constantExpr->get_constant()->accept( *visitor );
[51587aa]699 }
[71f4e4f]700
[9857e8d]701 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]702 extension( sizeofExpr );
[6c4ff37]703 output << "sizeof(";
[51587aa]704 if ( sizeofExpr->get_isType() ) {
[42a36d9]705 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]706 } else {
[9857e8d]707 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]708 } // if
[6c4ff37]709 output << ")";
[51587aa]710 }
[47534159]711
[9857e8d]712 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]713 // use GCC extension to avoid bumping std to C11
[8e9cbb2]714 extension( alignofExpr );
[47534159]715 output << "__alignof__(";
[25a054f]716 if ( alignofExpr->get_isType() ) {
[42a36d9]717 output << genType( alignofExpr->get_type(), "", options );
[47534159]718 } else {
[9857e8d]719 alignofExpr->get_expr()->accept( *visitor );
[47534159]720 } // if
721 output << ")";
722 }
[71f4e4f]723
[9857e8d]724 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]725 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]726 output << "offsetof(";
[42a36d9]727 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]728 output << ", " << offsetofExpr->get_member();
729 output << ")";
[2a4b088]730 }
731
[9857e8d]732 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]733 // use GCC builtin
734 output << "__builtin_offsetof(";
[42a36d9]735 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]736 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]737 output << ")";
738 }
[d63eeb0]739
[9857e8d]740 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]741 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
742 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]743 }
[70a06f6]744
[9857e8d]745 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]746 extension( logicalExpr );
[6c4ff37]747 output << "(";
[9857e8d]748 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]749 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]750 output << " && ";
[51587aa]751 } else {
[6c4ff37]752 output << " || ";
[51587aa]753 } // if
[9857e8d]754 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]755 output << ")";
[51587aa]756 }
[71f4e4f]757
[9857e8d]758 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]759 extension( conditionalExpr );
[6c4ff37]760 output << "(";
[9857e8d]761 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]762 output << " ? ";
[9857e8d]763 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]764 output << " : ";
[9857e8d]765 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]766 output << ")";
[51587aa]767 }
[71f4e4f]768
[9857e8d]769 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]770 extension( commaExpr );
[6c4ff37]771 output << "(";
[42a36d9]772 if ( options.genC ) {
[8a6cf7e]773 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
774 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
775 }
[9857e8d]776 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]777 output << " , ";
[9857e8d]778 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]779 output << ")";
[51587aa]780 }
[71f4e4f]781
[9857e8d]782 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]783 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]784 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]785 }
786
[9857e8d]787 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]788 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]789 extension( tupleExpr );
[e39241b]790 output << "[";
791 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
792 output << "]";
793 }
[907eccb]794
[9857e8d]795 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]796 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]797 extension( tupleExpr );
[e39241b]798 output << "[";
799 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
800 output << "]";
801 }
[71f4e4f]802
[9857e8d]803 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]804 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]805 extension( tupleExpr );
[9857e8d]806 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]807 output << "." << tupleExpr->get_index();
808 }
809
[9857e8d]810 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]811 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
812 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
813 if ( ! options.genC ) {
814 output << genType( typeExpr->get_type(), "", options );
[e4d829b]815 }
[e39241b]816 }
[2b6c1e0]817
[9857e8d]818 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]819 if ( !asmExpr->inout.empty() ) {
[7f5566b]820 output << "[ ";
[665f432]821 output << asmExpr->inout;
[7f5566b]822 output << " ] ";
823 } // if
[665f432]824 asmExpr->constraint->accept( *visitor );
[7f5566b]825 output << " ( ";
[665f432]826 asmExpr->operand->accept( *visitor );
[7f5566b]827 output << " )";
828 }
829
[9857e8d]830 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]831 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]832 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]833 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]834 }
835
[9857e8d]836 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]837 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]838 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]839 unqExpr->get_expr()->accept( *visitor );
[d104b02]840 output << " }";
841 }
842
[9857e8d]843 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]844 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]845 output << "({" << endl;
[f7cb0bc]846 ++indent;
[3c13c03]847 unsigned int numStmts = stmts.size();
848 unsigned int i = 0;
849 for ( Statement * stmt : stmts ) {
[058f549]850 output << indent << printLabels( stmt->get_labels() );
[3c13c03]851 if ( i+1 == numStmts ) {
852 // last statement in a statement expression needs to be handled specially -
853 // cannot cast to void, otherwise the expression statement has no value
854 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]855 exprStmt->expr->accept( *visitor );
[3c13c03]856 output << ";" << endl;
857 ++i;
858 break;
859 }
860 }
[9857e8d]861 stmt->accept( *visitor );
[3c13c03]862 output << endl;
863 if ( wantSpacing( stmt ) ) {
864 output << endl;
865 } // if
866 ++i;
867 }
[f7cb0bc]868 --indent;
[3c13c03]869 output << indent << "})";
[6eb8948]870 }
871
[4e8949f]872 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]873 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]874 expr->callExpr->accept( *visitor );
875 }
876
[44b4114]877 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]878 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]879 expr->expr->accept( *visitor );
880 }
881
[0f79853]882 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]883 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]884 arg->expr->accept( *visitor );
885 }
886
[d807ca28]887 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]888 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]889 output << "_Generic(";
890 expr->control->accept( *visitor );
891 output << ", ";
892 unsigned int numAssocs = expr->associations.size();
893 unsigned int i = 0;
894 for ( GenericExpr::Association & assoc : expr->associations ) {
895 if (assoc.isDefault) {
896 output << "default: ";
897 } else {
[42a36d9]898 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]899 }
900 assoc.expr->accept( *visitor );
901 if ( i+1 != numAssocs ) {
902 output << ", ";
903 }
904 i++;
905 }
906 output << ")";
907 }
908
[b0d9ff7]909 // QualifiedNameExpr should not reach to CodeGen.
910 // FixQualifiedName Convert QualifiedNameExpr to VariableExpr
911 void CodeGenerator::postvisit( QualifiedNameExpr * expr ) {
912 output << "/* label */" << mangleName(expr->var);
913 }
[d807ca28]914
[4810867]915 // *** Statements
[9857e8d]916 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]917 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]918 output << "{" << endl;
[51587aa]919
[f7cb0bc]920 ++indent;
[51587aa]921
[7f5566b]922 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]923 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]924 (*i)->accept( *visitor );
[2b6c1e0]925
[6c4ff37]926 output << endl;
[2b6c1e0]927 if ( wantSpacing( *i ) ) {
928 output << endl;
[3778cb2]929 } // if
[8688ce1]930 } // for
[f7cb0bc]931 --indent;
[51587aa]932
[cda48b6]933 output << indent << "}";
[51587aa]934 }
935
[9857e8d]936 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]937 assert( exprStmt );
[42a36d9]938 if ( options.genC ) {
[262f085f]939 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]940 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]941 }
[9857e8d]942 exprStmt->get_expr()->accept( *visitor );
[3eb1653]943 output << ";";
[51587aa]944 }
945
[9857e8d]946 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]947 output << "asm ";
948 if ( asmStmt->get_voltile() ) output << "volatile ";
949 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
950 output << "( ";
[9857e8d]951 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]952 output << " : ";
953 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
954 output << " : ";
955 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
956 output << " : ";
957 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
958 if ( ! asmStmt->get_gotolabels().empty() ) {
959 output << " : ";
960 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
961 output << *begin++;
962 if ( begin == asmStmt->get_gotolabels().end() ) break;
963 output << ", ";
964 } // for
965 } // if
[d7312ac]966 output << " );";
[7f5566b]967 }
968
[9857e8d]969 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]970 output << "asm ";
971 AsmStmt * asmStmt = asmDecl->get_stmt();
972 output << "( ";
[9857e8d]973 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]974 output << " )";
[e994912]975 }
976
[2d019af]977 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
978 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
979 }
980
[cc32d83]981 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]982 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]983 }
984
[9857e8d]985 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]986 output << "if ( ";
[9857e8d]987 ifStmt->get_condition()->accept( *visitor );
[7f5566b]988 output << " ) ";
[51587aa]989
[3b0bc16]990 ifStmt->get_then()->accept( *visitor );
[51587aa]991
[3b0bc16]992 if ( ifStmt->get_else() != 0) {
[2b6c1e0]993 output << " else ";
[3b0bc16]994 ifStmt->get_else()->accept( *visitor );
[51587aa]995 } // if
996 }
997
[9857e8d]998 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]999 output << "switch ( ";
[9857e8d]1000 switchStmt->get_condition()->accept( *visitor );
[7f5566b]1001 output << " ) ";
[71f4e4f]1002
[d22e90f]1003 output << "{" << endl;
[f7cb0bc]1004 ++indent;
[9857e8d]1005 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1006 --indent;
[cda48b6]1007 output << indent << "}";
[51587aa]1008 }
1009
[9857e8d]1010 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1011 updateLocation( caseStmt );
[1dcd9554]1012 output << indent;
[eb3261f]1013 if ( caseStmt->isDefault()) {
[2b6c1e0]1014 output << "default";
[eb3261f]1015 } else {
[2b6c1e0]1016 output << "case ";
[9857e8d]1017 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1018 } // if
[d22e90f]1019 output << ":" << endl;
[71f4e4f]1020
[51587aa]1021 std::list<Statement *> sts = caseStmt->get_statements();
1022
[f7cb0bc]1023 ++indent;
[51587aa]1024 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1025 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1026 (*i)->accept( *visitor );
[6c4ff37]1027 output << endl;
[3778cb2]1028 } // for
[f7cb0bc]1029 --indent;
[51587aa]1030 }
1031
[9857e8d]1032 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1033 switch ( branchStmt->get_type()) {
1034 case BranchStmt::Goto:
1035 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1036 output << "goto " << branchStmt->get_target();
[71f4e4f]1037 else {
[51587aa]1038 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1039 output << "goto *";
[9857e8d]1040 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1041 } // if
1042 } // if
1043 break;
1044 case BranchStmt::Break:
[6c4ff37]1045 output << "break";
[51587aa]1046 break;
1047 case BranchStmt::Continue:
[6c4ff37]1048 output << "continue";
[51587aa]1049 break;
[7c2a7b6]1050 case BranchStmt::FallThrough:
1051 case BranchStmt::FallThroughDefault:
[42a36d9]1052 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1053 output << "fallthru";
[7c2a7b6]1054 break;
[6180274]1055 default: ; // prevent warning
[3778cb2]1056 } // switch
[7c2a7b6]1057 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1058 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1059 if ( ! branchStmt->get_target().empty() ) {
1060 output << " " << branchStmt->get_target();
1061 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1062 output << " default";
1063 }
1064 }
[2b6c1e0]1065 output << ";";
[51587aa]1066 }
1067
[9857e8d]1068 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1069 output << "return ";
[9857e8d]1070 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1071 output << ";";
[51587aa]1072 }
1073
[9857e8d]1074 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1075 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1076
1077 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1078 "throw" : "throwResume");
[daf1af8]1079 if (throwStmt->get_expr()) {
1080 output << " ";
[9857e8d]1081 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1082 }
1083 if (throwStmt->get_target()) {
1084 output << " _At ";
[9857e8d]1085 throwStmt->get_target()->accept( *visitor );
[daf1af8]1086 }
1087 output << ";";
1088 }
[e4ea10b7]1089 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1090 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1091
1092 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1093 "catch" : "catchResume");
[e4ea10b7]1094 output << "( ";
1095 stmt->decl->accept( *visitor );
1096 output << " ) ";
1097
1098 if( stmt->cond ) {
1099 output << "if/when(?) (";
1100 stmt->cond->accept( *visitor );
1101 output << ") ";
1102 }
1103 stmt->body->accept( *visitor );
1104 }
1105
1106 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1107 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1108
1109 bool first = true;
1110 for( auto & clause : stmt->clauses ) {
1111 if(first) { output << "or "; first = false; }
1112 if( clause.condition ) {
1113 output << "when(";
1114 stmt->timeout.condition->accept( *visitor );
1115 output << ") ";
1116 }
1117 output << "waitfor(";
1118 clause.target.function->accept( *visitor );
1119 for( Expression * expr : clause.target.arguments ) {
1120 output << ",";
1121 expr->accept( *visitor );
1122 }
1123 output << ") ";
1124 clause.statement->accept( *visitor );
1125 }
1126
1127 if( stmt->timeout.statement ) {
1128 output << "or ";
1129 if( stmt->timeout.condition ) {
1130 output << "when(";
1131 stmt->timeout.condition->accept( *visitor );
1132 output << ") ";
1133 }
1134 output << "timeout(";
1135 stmt->timeout.time->accept( *visitor );
1136 output << ") ";
1137 stmt->timeout.statement->accept( *visitor );
1138 }
1139
1140 if( stmt->orelse.statement ) {
1141 output << "or ";
1142 if( stmt->orelse.condition ) {
1143 output << "when(";
1144 stmt->orelse.condition->accept( *visitor );
1145 output << ")";
1146 }
1147 output << "else ";
1148 stmt->orelse.statement->accept( *visitor );
1149 }
1150 }
1151
[55d6e8de]1152 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1153 if ( ! options.genC ) {
[55d6e8de]1154 output << "with ( ";
1155 genCommaList( with->exprs.begin(), with->exprs.end() );
1156 output << " ) ";
1157 }
1158 with->stmt->accept( *visitor );
1159 }
[daf1af8]1160
[3b0bc16]1161 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1162 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1163 output << "do";
[321a2481]1164 } else {
[d7312ac]1165 output << "while (";
[3b0bc16]1166 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1167 output << ")";
[51587aa]1168 } // if
[2b6c1e0]1169 output << " ";
[51587aa]1170
[3b0bc16]1171 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1172 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1173
[cda48b6]1174 output << indent;
[51587aa]1175
[3b0bc16]1176 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1177 output << " while (";
[3b0bc16]1178 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1179 output << ");";
[51587aa]1180 } // if
1181 }
1182
[9857e8d]1183 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1184 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1185 output << "for (;";
[51587aa]1186
[321a2481]1187 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1188 forStmt->get_condition()->accept( *visitor );
[3778cb2]1189 } // if
[6c4ff37]1190 output << ";";
[51587aa]1191
[321a2481]1192 if ( forStmt->get_increment() != 0 ) {
1193 // cast the top-level expression to void to reduce gcc warnings.
1194 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1195 expr->accept( *visitor );
[3778cb2]1196 } // if
[2b6c1e0]1197 output << ") ";
[51587aa]1198
1199 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1200 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1201 forStmt->get_body()->accept( *visitor );
[51587aa]1202 } // if
1203 }
1204
[9857e8d]1205 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1206 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1207 output << "/* null statement */ ;";
[51587aa]1208 }
1209
[9857e8d]1210 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1211 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1212
[51587aa]1213 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1214 output << ";";
[51587aa]1215 } // if
1216 }
1217
[9857e8d]1218 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1219 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1220 stmt->callStmt->accept( *visitor );
1221 }
1222
[6cebfef]1223 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1224 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1225 stmt->stmt->accept( *visitor );
1226 }
1227
[dd020c0]1228 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1229 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1230 decl->get_storageClasses().print( output );
[a7c90d4]1231 } // if
[dd020c0]1232 } // CodeGenerator::handleStorageClass
[9facf3b]1233
1234 std::string genName( DeclarationWithType * decl ) {
[60a8062]1235 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1236 if ( opInfo ) {
1237 return opInfo->outputName;
[9facf3b]1238 } else {
1239 return decl->get_name();
1240 } // if
1241 }
[1931bb01]1242
1243std::string genName( ast::DeclWithType const * decl ) {
1244 if ( const OperatorInfo * opInfo = operatorLookup( decl->name ) ) {
1245 return opInfo->outputName;
1246 } else {
1247 return decl->name;
1248 }
1249}
1250
[51b73452]1251} // namespace CodeGen
[51587aa]1252
1253// Local Variables: //
1254// tab-width: 4 //
1255// mode: c++ //
1256// compile-command: "make install" //
1257// End: //
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