source: src/CodeGen/CodeGenerator.cc@ a55472cc

ADT ast-experimental
Last change on this file since a55472cc was 0bd46fd, checked in by Thierry Delisle <tdelisle@…>, 3 years ago

Fixed several warnings
  • 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()) {
[0bd46fd]279 unsigned long long last_val = -1; // if the first enum value has no explicit initializer,
280 // as other
[51587aa]281 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]282 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]283 assert( obj );
[0bd46fd]284 output << "static ";
285 output << genType(enumDecl->base, "", options) << " const ";
[4390fb6]286 output << mangleName( obj ) << " ";
287 output << " = ";
[30d91e4]288 output << "(" << genType(enumDecl->base, "", options) << ")";
289 if ( (BasicType *)(enumDecl->base) && ((BasicType *)(enumDecl->base))->isWholeNumber() ) {
290 if ( obj->get_init() ) {
291 obj->get_init()->accept( *visitor );
[12df6fe]292 last_val = ((ConstantExpr *)(((SingleInit *)(obj->init))->value))->constant.get_ival();
[30d91e4]293 } else {
294 output << ++last_val;
295 } // if
[4390fb6]296 } else {
[30d91e4]297 if ( obj->get_init() ) {
[b99fd56]298 obj->get_init()->accept( *visitor );
[4390fb6]299 } else {
[30d91e4]300 // Should not reach here!
[4390fb6]301 }
[30d91e4]302 }
[4390fb6]303 output << ";" << endl;
[51587aa]304 } // for
[4390fb6]305 } else {
306 output << "enum ";
307 genAttributes( enumDecl->get_attributes() );
308
309 output << enumDecl->get_name();
310
311 if ( ! memb.empty() ) {
312 output << " {" << endl;
313
314 ++indent;
315 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
316 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
317 assert( obj );
318 output << indent << mangleName( obj );
319 if ( obj->get_init() ) {
320 output << " = ";
321 obj->get_init()->accept( *visitor );
322 } // if
323 output << "," << endl;
324 } // for
[f7cb0bc]325 --indent;
[cda48b6]326 output << indent << "}";
[4390fb6]327 } // if
[51587aa]328 } // if
329 }
[71f4e4f]330
[9857e8d]331 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]332 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]333 extension( traitDecl );
334 handleAggregate( traitDecl, "trait " );
335 }
[71f4e4f]336
[9857e8d]337 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]338 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]339 output << "typedef ";
[42a36d9]340 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]341 }
[71f4e4f]342
[9857e8d]343 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]344 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]345 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]346 if ( typeDecl->sized ) {
[ab4bff5]347 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]348 }
[ab4bff5]349 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]350 output << " | { ";
[ab4bff5]351 for ( DeclarationWithType * assert : typeDecl->assertions ) {
352 assert->accept( *visitor );
353 output << "; ";
354 }
[a0c7dc36]355 output << " }";
[e39241b]356 }
[51587aa]357 }
358
[92fea32]359 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
360 output << "_Static_assert(";
361 assertDecl->condition->accept( *visitor );
362 output << ", ";
363 assertDecl->message->accept( *visitor );
364 output << ")";
365 }
366
[9857e8d]367 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]368 std::list< Expression * > designators = designation->get_designators();
[e45215c]369 if ( designators.size() == 0 ) return;
[e4d829b]370 for ( Expression * des : designators ) {
[62423350]371 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
372 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
373 output << ".";
[9857e8d]374 des->accept( *visitor );
[e4d829b]375 } else {
[3e54399]376 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]377 output << "[";
[9857e8d]378 des->accept( *visitor );
[62423350]379 output << "]";
[3778cb2]380 } // if
381 } // for
[3eb1653]382 output << " = ";
[e45215c]383 }
384
[9857e8d]385 void CodeGenerator::postvisit( SingleInit * init ) {
386 init->get_value()->accept( *visitor );
[51587aa]387 }
388
[9857e8d]389 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]390 auto initBegin = init->begin();
391 auto initEnd = init->end();
392 auto desigBegin = init->get_designations().begin();
393 auto desigEnd = init->get_designations().end();
394
[6c4ff37]395 output << "{ ";
[e4d829b]396 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]397 (*desigBegin)->accept( *visitor );
398 (*initBegin)->accept( *visitor );
[e4d829b]399 ++initBegin, ++desigBegin;
400 if ( initBegin != initEnd ) {
401 output << ", ";
402 }
403 }
[6c4ff37]404 output << " }";
[e4d829b]405 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]406 }
407
[d22e90f]408 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]409 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]410 // pseudo-output for constructor/destructor pairs
[d22e90f]411 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]412 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]413 output << ", " << endl << indent << "dtor: ";
[9857e8d]414 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]415 output << endl << --indent << "}";
[fc638d2]416 }
417
[9857e8d]418 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]419 output << constant->get_value();
[51587aa]420 }
421
[4810867]422 // *** Expressions
[9857e8d]423 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]424 extension( applicationExpr );
[8688ce1]425 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]426 const OperatorInfo * opInfo;
427 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]428 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]429 switch ( opInfo->type ) {
[51587aa]430 case OT_INDEX:
431 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]432 (*arg++)->accept( *visitor );
[6c4ff37]433 output << "[";
[9857e8d]434 (*arg)->accept( *visitor );
[6c4ff37]435 output << "]";
[51587aa]436 break;
[71f4e4f]437
[51587aa]438 case OT_CALL:
[356189a]439 // there are no intrinsic definitions of the function call operator
[51587aa]440 assert( false );
441 break;
[71f4e4f]442
[f1e012b]443 case OT_CTOR:
[c2ce2350]444 case OT_DTOR:
[356189a]445 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]446 // the expression fed into a single parameter constructor or destructor may contain side
447 // effects, so must still output this expression
[64071c2]448 output << "(";
[9857e8d]449 (*arg++)->accept( *visitor );
[60a8062]450 output << ") /* " << opInfo->inputName << " */";
[356189a]451 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]452 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]453 output << "(";
[9857e8d]454 (*arg++)->accept( *visitor );
[60a8062]455 output << opInfo->symbol;
[9857e8d]456 (*arg)->accept( *visitor );
[60a8062]457 output << ") /* " << opInfo->inputName << " */";
[356189a]458 } else {
[c2ce2350]459 // no constructors with 0 or more than 2 parameters
[356189a]460 assert( false );
[8688ce1]461 } // if
[356189a]462 break;
[f1e012b]463
[51587aa]464 case OT_PREFIX:
465 case OT_PREFIXASSIGN:
466 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]467 output << "(";
[60a8062]468 output << opInfo->symbol;
[9857e8d]469 (*arg)->accept( *visitor );
[6c4ff37]470 output << ")";
[51587aa]471 break;
[71f4e4f]472
[51587aa]473 case OT_POSTFIX:
474 case OT_POSTFIXASSIGN:
475 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]476 (*arg)->accept( *visitor );
[60a8062]477 output << opInfo->symbol;
[51587aa]478 break;
479
[f1e012b]480
[51587aa]481 case OT_INFIX:
482 case OT_INFIXASSIGN:
483 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]484 output << "(";
[9857e8d]485 (*arg++)->accept( *visitor );
[60a8062]486 output << opInfo->symbol;
[9857e8d]487 (*arg)->accept( *visitor );
[6c4ff37]488 output << ")";
[51587aa]489 break;
[71f4e4f]490
[51587aa]491 case OT_CONSTANT:
[721f17a]492 case OT_LABELADDRESS:
493 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]494 assert( false );
[3778cb2]495 } // switch
[9d55ff6]496 } else if( varExpr->get_var()->get_linkage() == LinkageSpec::BuiltinCFA && varExpr->get_var()->get_name() == "intptr" ) {
497 // THIS is a hack to make it a constant until a proper constexpr solution is created
498 output << "((void*)";
499 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
500 (*arg++)->accept( *visitor );
501 output << ")";
[17cd4eb]502 } else {
[9857e8d]503 varExpr->accept( *visitor );
[6c4ff37]504 output << "(";
[51587aa]505 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]506 output << ")";
[17cd4eb]507 } // if
[51587aa]508 } else {
[9857e8d]509 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]510 output << "(";
[51587aa]511 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]512 output << ")";
[51587aa]513 } // if
514 }
[71f4e4f]515
[9857e8d]516 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]517 extension( untypedExpr );
[22bc276]518 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]519 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
520 if ( opInfo ) {
[22bc276]521 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]522 switch ( opInfo->type ) {
[51587aa]523 case OT_INDEX:
[22bc276]524 assert( untypedExpr->args.size() == 2 );
[9857e8d]525 (*arg++)->accept( *visitor );
[6c4ff37]526 output << "[";
[9857e8d]527 (*arg)->accept( *visitor );
[6c4ff37]528 output << "]";
[51587aa]529 break;
[71f4e4f]530
[51587aa]531 case OT_CALL:
[f1e012b]532 assert( false );
533
[c2ce2350]534 case OT_CTOR:
535 case OT_DTOR:
[22bc276]536 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]537 // the expression fed into a single parameter constructor or destructor may contain side
538 // effects, so must still output this expression
[64071c2]539 output << "(";
[9857e8d]540 (*arg++)->accept( *visitor );
[60a8062]541 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]542 } else if ( untypedExpr->get_args().size() == 2 ) {
543 // intrinsic two parameter constructors are essentially bitwise assignment
544 output << "(";
[9857e8d]545 (*arg++)->accept( *visitor );
[60a8062]546 output << opInfo->symbol;
[9857e8d]547 (*arg)->accept( *visitor );
[60a8062]548 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]549 } else {
550 // no constructors with 0 or more than 2 parameters
[42a36d9]551 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]552 output << "(";
553 (*arg++)->accept( *visitor );
[60a8062]554 output << opInfo->symbol << "{ ";
[22bc276]555 genCommaList( arg, untypedExpr->args.end() );
[60a8062]556 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]557 } // if
[51587aa]558 break;
[71f4e4f]559
[51587aa]560 case OT_PREFIX:
561 case OT_PREFIXASSIGN:
[de62360d]562 case OT_LABELADDRESS:
[22bc276]563 assert( untypedExpr->args.size() == 1 );
[6c4ff37]564 output << "(";
[60a8062]565 output << opInfo->symbol;
[9857e8d]566 (*arg)->accept( *visitor );
[6c4ff37]567 output << ")";
[51587aa]568 break;
[71f4e4f]569
[51587aa]570 case OT_POSTFIX:
571 case OT_POSTFIXASSIGN:
[22bc276]572 assert( untypedExpr->args.size() == 1 );
[9857e8d]573 (*arg)->accept( *visitor );
[60a8062]574 output << opInfo->symbol;
[51587aa]575 break;
[71f4e4f]576
[51587aa]577 case OT_INFIX:
578 case OT_INFIXASSIGN:
[22bc276]579 assert( untypedExpr->args.size() == 2 );
[6c4ff37]580 output << "(";
[9857e8d]581 (*arg++)->accept( *visitor );
[60a8062]582 output << opInfo->symbol;
[9857e8d]583 (*arg)->accept( *visitor );
[6c4ff37]584 output << ")";
[51587aa]585 break;
[71f4e4f]586
[51587aa]587 case OT_CONSTANT:
588 // there are no intrinsic definitions of 0 or 1 as functions
589 assert( false );
[3778cb2]590 } // switch
[51587aa]591 } else {
[22bc276]592 // builtin routines
593 nameExpr->accept( *visitor );
594 output << "(";
595 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
596 output << ")";
[51587aa]597 } // if
598 } else {
[22bc276]599 untypedExpr->function->accept( *visitor );
[6c4ff37]600 output << "(";
[22bc276]601 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]602 output << ")";
[51587aa]603 } // if
604 }
[71f4e4f]605
[9857e8d]606 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]607 rangeExpr->low->accept( *visitor );
[064e3ff]608 output << " ... ";
[22bc276]609 rangeExpr->high->accept( *visitor );
[064e3ff]610 }
611
[9857e8d]612 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]613 extension( nameExpr );
[60a8062]614 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
615 if ( opInfo ) {
616 if ( opInfo->type == OT_CONSTANT ) {
617 output << opInfo->symbol;
[5ea7a22]618 } else {
[60a8062]619 output << opInfo->outputName;
[5ea7a22]620 }
[51587aa]621 } else {
[6c4ff37]622 output << nameExpr->get_name();
[51587aa]623 } // if
624 }
[71f4e4f]625
[6e50a6b]626 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
627 extension( dimensionExpr );
628 output << "/*non-type*/" << dimensionExpr->get_name();
629 }
630
[9857e8d]631 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]632 extension( addressExpr );
[6c4ff37]633 output << "(&";
[9857e8d]634 addressExpr->arg->accept( *visitor );
[6c4ff37]635 output << ")";
[51587aa]636 }
637
[9857e8d]638 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]639 extension( addressExpr );
640 output << "(&&" << addressExpr->arg << ")";
641 }
642
[9857e8d]643 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]644 extension( castExpr );
[803deb1]645 output << "(";
[906e24d]646 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]647 output << "(void)";
[d104b02]648 } else {
649 // at least one result type of cast.
650 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
651 // an lvalue cast, this has been taken out.
[803deb1]652 output << "(";
[42a36d9]653 output << genType( castExpr->get_result(), "", options );
[71f4e4f]654 output << ")";
[3778cb2]655 } // if
[da9d79b]656 castExpr->arg->accept( *visitor );
657 output << ")";
658 }
659
660 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]661 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]662 extension( castExpr );
663 output << "((" << castExpr->targetString() << " &)";
664 castExpr->arg->accept( *visitor );
[803deb1]665 output << ")";
[51587aa]666 }
[71f4e4f]667
[9857e8d]668 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]669 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]670 extension( castExpr );
671 output << "(virtual ";
[9857e8d]672 castExpr->get_arg()->accept( *visitor );
[a5f0529]673 output << ")";
674 }
675
[9857e8d]676 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]677 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]678 extension( memberExpr );
[9857e8d]679 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]680 output << ".";
[9857e8d]681 memberExpr->get_member()->accept( *visitor );
[51587aa]682 }
[71f4e4f]683
[9857e8d]684 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]685 extension( memberExpr );
[9857e8d]686 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]687 output << "." << mangleName( memberExpr->get_member() );
[51587aa]688 }
[71f4e4f]689
[9857e8d]690 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]691 extension( variableExpr );
[60a8062]692 const OperatorInfo * opInfo;
[b99fd56]693 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
694 output << "0";
695 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]696 output << opInfo->symbol;
[51587aa]697 } else {
[6c4ff37]698 output << mangleName( variableExpr->get_var() );
[51587aa]699 } // if
700 }
[71f4e4f]701
[9857e8d]702 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]703 assert( constantExpr->get_constant() );
[e04ef3a]704 extension( constantExpr );
[9857e8d]705 constantExpr->get_constant()->accept( *visitor );
[51587aa]706 }
[71f4e4f]707
[9857e8d]708 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]709 extension( sizeofExpr );
[6c4ff37]710 output << "sizeof(";
[51587aa]711 if ( sizeofExpr->get_isType() ) {
[42a36d9]712 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]713 } else {
[9857e8d]714 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]715 } // if
[6c4ff37]716 output << ")";
[51587aa]717 }
[47534159]718
[9857e8d]719 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]720 // use GCC extension to avoid bumping std to C11
[8e9cbb2]721 extension( alignofExpr );
[47534159]722 output << "__alignof__(";
[25a054f]723 if ( alignofExpr->get_isType() ) {
[42a36d9]724 output << genType( alignofExpr->get_type(), "", options );
[47534159]725 } else {
[9857e8d]726 alignofExpr->get_expr()->accept( *visitor );
[47534159]727 } // if
728 output << ")";
729 }
[71f4e4f]730
[9857e8d]731 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]732 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]733 output << "offsetof(";
[42a36d9]734 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]735 output << ", " << offsetofExpr->get_member();
736 output << ")";
[2a4b088]737 }
738
[9857e8d]739 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]740 // use GCC builtin
741 output << "__builtin_offsetof(";
[42a36d9]742 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]743 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]744 output << ")";
745 }
[d63eeb0]746
[9857e8d]747 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]748 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
749 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]750 }
[70a06f6]751
[9857e8d]752 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]753 extension( logicalExpr );
[6c4ff37]754 output << "(";
[9857e8d]755 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]756 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]757 output << " && ";
[51587aa]758 } else {
[6c4ff37]759 output << " || ";
[51587aa]760 } // if
[9857e8d]761 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]762 output << ")";
[51587aa]763 }
[71f4e4f]764
[9857e8d]765 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]766 extension( conditionalExpr );
[6c4ff37]767 output << "(";
[9857e8d]768 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]769 output << " ? ";
[9857e8d]770 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]771 output << " : ";
[9857e8d]772 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]773 output << ")";
[51587aa]774 }
[71f4e4f]775
[9857e8d]776 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]777 extension( commaExpr );
[6c4ff37]778 output << "(";
[42a36d9]779 if ( options.genC ) {
[8a6cf7e]780 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
781 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
782 }
[9857e8d]783 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]784 output << " , ";
[9857e8d]785 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]786 output << ")";
[51587aa]787 }
[71f4e4f]788
[9857e8d]789 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]790 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]791 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]792 }
793
[9857e8d]794 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]795 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]796 extension( tupleExpr );
[e39241b]797 output << "[";
798 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
799 output << "]";
800 }
[907eccb]801
[9857e8d]802 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]803 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]804 extension( tupleExpr );
[e39241b]805 output << "[";
806 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
807 output << "]";
808 }
[71f4e4f]809
[9857e8d]810 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]811 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]812 extension( tupleExpr );
[9857e8d]813 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]814 output << "." << tupleExpr->get_index();
815 }
816
[9857e8d]817 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]818 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
819 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
820 if ( ! options.genC ) {
821 output << genType( typeExpr->get_type(), "", options );
[e4d829b]822 }
[e39241b]823 }
[2b6c1e0]824
[9857e8d]825 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]826 if ( !asmExpr->inout.empty() ) {
[7f5566b]827 output << "[ ";
[665f432]828 output << asmExpr->inout;
[7f5566b]829 output << " ] ";
830 } // if
[665f432]831 asmExpr->constraint->accept( *visitor );
[7f5566b]832 output << " ( ";
[665f432]833 asmExpr->operand->accept( *visitor );
[7f5566b]834 output << " )";
835 }
836
[9857e8d]837 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]838 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]839 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]840 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]841 }
842
[9857e8d]843 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]844 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]845 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]846 unqExpr->get_expr()->accept( *visitor );
[d104b02]847 output << " }";
848 }
849
[9857e8d]850 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]851 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]852 output << "({" << endl;
[f7cb0bc]853 ++indent;
[3c13c03]854 unsigned int numStmts = stmts.size();
855 unsigned int i = 0;
856 for ( Statement * stmt : stmts ) {
[058f549]857 output << indent << printLabels( stmt->get_labels() );
[3c13c03]858 if ( i+1 == numStmts ) {
859 // last statement in a statement expression needs to be handled specially -
860 // cannot cast to void, otherwise the expression statement has no value
861 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]862 exprStmt->expr->accept( *visitor );
[3c13c03]863 output << ";" << endl;
864 ++i;
865 break;
866 }
867 }
[9857e8d]868 stmt->accept( *visitor );
[3c13c03]869 output << endl;
870 if ( wantSpacing( stmt ) ) {
871 output << endl;
872 } // if
873 ++i;
874 }
[f7cb0bc]875 --indent;
[3c13c03]876 output << indent << "})";
[6eb8948]877 }
878
[4e8949f]879 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]880 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]881 expr->callExpr->accept( *visitor );
882 }
883
[44b4114]884 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]885 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]886 expr->expr->accept( *visitor );
887 }
888
[0f79853]889 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]890 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]891 arg->expr->accept( *visitor );
892 }
893
[d807ca28]894 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]895 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]896 output << "_Generic(";
897 expr->control->accept( *visitor );
898 output << ", ";
899 unsigned int numAssocs = expr->associations.size();
900 unsigned int i = 0;
901 for ( GenericExpr::Association & assoc : expr->associations ) {
902 if (assoc.isDefault) {
903 output << "default: ";
904 } else {
[42a36d9]905 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]906 }
907 assoc.expr->accept( *visitor );
908 if ( i+1 != numAssocs ) {
909 output << ", ";
910 }
911 i++;
912 }
913 output << ")";
914 }
915
[0bd46fd]916 // QualifiedNameExpr should not reach to CodeGen.
[b0d9ff7]917 // FixQualifiedName Convert QualifiedNameExpr to VariableExpr
918 void CodeGenerator::postvisit( QualifiedNameExpr * expr ) {
919 output << "/* label */" << mangleName(expr->var);
920 }
[d807ca28]921
[4810867]922 // *** Statements
[9857e8d]923 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]924 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]925 output << "{" << endl;
[51587aa]926
[f7cb0bc]927 ++indent;
[51587aa]928
[7f5566b]929 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]930 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]931 (*i)->accept( *visitor );
[2b6c1e0]932
[6c4ff37]933 output << endl;
[2b6c1e0]934 if ( wantSpacing( *i ) ) {
935 output << endl;
[3778cb2]936 } // if
[8688ce1]937 } // for
[f7cb0bc]938 --indent;
[51587aa]939
[cda48b6]940 output << indent << "}";
[51587aa]941 }
942
[9857e8d]943 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]944 assert( exprStmt );
[42a36d9]945 if ( options.genC ) {
[262f085f]946 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]947 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]948 }
[9857e8d]949 exprStmt->get_expr()->accept( *visitor );
[3eb1653]950 output << ";";
[51587aa]951 }
952
[9857e8d]953 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]954 output << "asm ";
955 if ( asmStmt->get_voltile() ) output << "volatile ";
956 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
957 output << "( ";
[9857e8d]958 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]959 output << " : ";
960 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
961 output << " : ";
962 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
963 output << " : ";
964 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
965 if ( ! asmStmt->get_gotolabels().empty() ) {
966 output << " : ";
967 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
968 output << *begin++;
969 if ( begin == asmStmt->get_gotolabels().end() ) break;
970 output << ", ";
971 } // for
972 } // if
[d7312ac]973 output << " );";
[7f5566b]974 }
975
[9857e8d]976 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]977 output << "asm ";
978 AsmStmt * asmStmt = asmDecl->get_stmt();
979 output << "( ";
[9857e8d]980 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]981 output << " )";
[e994912]982 }
983
[2d019af]984 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
985 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
986 }
987
[cc32d83]988 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]989 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]990 }
991
[9857e8d]992 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]993 output << "if ( ";
[9857e8d]994 ifStmt->get_condition()->accept( *visitor );
[7f5566b]995 output << " ) ";
[51587aa]996
[3b0bc16]997 ifStmt->get_then()->accept( *visitor );
[51587aa]998
[3b0bc16]999 if ( ifStmt->get_else() != 0) {
[2b6c1e0]1000 output << " else ";
[3b0bc16]1001 ifStmt->get_else()->accept( *visitor );
[51587aa]1002 } // if
1003 }
1004
[9857e8d]1005 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]1006 output << "switch ( ";
[9857e8d]1007 switchStmt->get_condition()->accept( *visitor );
[7f5566b]1008 output << " ) ";
[71f4e4f]1009
[d22e90f]1010 output << "{" << endl;
[f7cb0bc]1011 ++indent;
[9857e8d]1012 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1013 --indent;
[cda48b6]1014 output << indent << "}";
[51587aa]1015 }
1016
[9857e8d]1017 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1018 updateLocation( caseStmt );
[1dcd9554]1019 output << indent;
[eb3261f]1020 if ( caseStmt->isDefault()) {
[2b6c1e0]1021 output << "default";
[eb3261f]1022 } else {
[2b6c1e0]1023 output << "case ";
[9857e8d]1024 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1025 } // if
[d22e90f]1026 output << ":" << endl;
[71f4e4f]1027
[51587aa]1028 std::list<Statement *> sts = caseStmt->get_statements();
1029
[f7cb0bc]1030 ++indent;
[51587aa]1031 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1032 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1033 (*i)->accept( *visitor );
[6c4ff37]1034 output << endl;
[3778cb2]1035 } // for
[f7cb0bc]1036 --indent;
[51587aa]1037 }
1038
[9857e8d]1039 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1040 switch ( branchStmt->get_type()) {
1041 case BranchStmt::Goto:
1042 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1043 output << "goto " << branchStmt->get_target();
[71f4e4f]1044 else {
[51587aa]1045 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1046 output << "goto *";
[9857e8d]1047 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1048 } // if
1049 } // if
1050 break;
1051 case BranchStmt::Break:
[6c4ff37]1052 output << "break";
[51587aa]1053 break;
1054 case BranchStmt::Continue:
[6c4ff37]1055 output << "continue";
[51587aa]1056 break;
[7c2a7b6]1057 case BranchStmt::FallThrough:
1058 case BranchStmt::FallThroughDefault:
[42a36d9]1059 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1060 output << "fallthru";
[7c2a7b6]1061 break;
[6180274]1062 default: ; // prevent warning
[3778cb2]1063 } // switch
[7c2a7b6]1064 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1065 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1066 if ( ! branchStmt->get_target().empty() ) {
1067 output << " " << branchStmt->get_target();
1068 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1069 output << " default";
1070 }
1071 }
[2b6c1e0]1072 output << ";";
[51587aa]1073 }
1074
[9857e8d]1075 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1076 output << "return ";
[9857e8d]1077 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1078 output << ";";
[51587aa]1079 }
1080
[9857e8d]1081 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1082 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1083
1084 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1085 "throw" : "throwResume");
[daf1af8]1086 if (throwStmt->get_expr()) {
1087 output << " ";
[9857e8d]1088 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1089 }
1090 if (throwStmt->get_target()) {
1091 output << " _At ";
[9857e8d]1092 throwStmt->get_target()->accept( *visitor );
[daf1af8]1093 }
1094 output << ";";
1095 }
[e4ea10b7]1096 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1097 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1098
1099 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1100 "catch" : "catchResume");
[e4ea10b7]1101 output << "( ";
1102 stmt->decl->accept( *visitor );
1103 output << " ) ";
1104
1105 if( stmt->cond ) {
1106 output << "if/when(?) (";
1107 stmt->cond->accept( *visitor );
1108 output << ") ";
1109 }
1110 stmt->body->accept( *visitor );
1111 }
1112
1113 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1114 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1115
1116 bool first = true;
1117 for( auto & clause : stmt->clauses ) {
1118 if(first) { output << "or "; first = false; }
1119 if( clause.condition ) {
1120 output << "when(";
1121 stmt->timeout.condition->accept( *visitor );
1122 output << ") ";
1123 }
1124 output << "waitfor(";
1125 clause.target.function->accept( *visitor );
1126 for( Expression * expr : clause.target.arguments ) {
1127 output << ",";
1128 expr->accept( *visitor );
1129 }
1130 output << ") ";
1131 clause.statement->accept( *visitor );
1132 }
1133
1134 if( stmt->timeout.statement ) {
1135 output << "or ";
1136 if( stmt->timeout.condition ) {
1137 output << "when(";
1138 stmt->timeout.condition->accept( *visitor );
1139 output << ") ";
1140 }
1141 output << "timeout(";
1142 stmt->timeout.time->accept( *visitor );
1143 output << ") ";
1144 stmt->timeout.statement->accept( *visitor );
1145 }
1146
1147 if( stmt->orelse.statement ) {
1148 output << "or ";
1149 if( stmt->orelse.condition ) {
1150 output << "when(";
1151 stmt->orelse.condition->accept( *visitor );
1152 output << ")";
1153 }
1154 output << "else ";
1155 stmt->orelse.statement->accept( *visitor );
1156 }
1157 }
1158
[55d6e8de]1159 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1160 if ( ! options.genC ) {
[55d6e8de]1161 output << "with ( ";
1162 genCommaList( with->exprs.begin(), with->exprs.end() );
1163 output << " ) ";
1164 }
1165 with->stmt->accept( *visitor );
1166 }
[daf1af8]1167
[3b0bc16]1168 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1169 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1170 output << "do";
[321a2481]1171 } else {
[d7312ac]1172 output << "while (";
[3b0bc16]1173 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1174 output << ")";
[51587aa]1175 } // if
[2b6c1e0]1176 output << " ";
[51587aa]1177
[3b0bc16]1178 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1179 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1180
[cda48b6]1181 output << indent;
[51587aa]1182
[3b0bc16]1183 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1184 output << " while (";
[3b0bc16]1185 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1186 output << ");";
[51587aa]1187 } // if
1188 }
1189
[9857e8d]1190 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1191 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1192 output << "for (;";
[51587aa]1193
[321a2481]1194 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1195 forStmt->get_condition()->accept( *visitor );
[3778cb2]1196 } // if
[6c4ff37]1197 output << ";";
[51587aa]1198
[321a2481]1199 if ( forStmt->get_increment() != 0 ) {
1200 // cast the top-level expression to void to reduce gcc warnings.
1201 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1202 expr->accept( *visitor );
[3778cb2]1203 } // if
[2b6c1e0]1204 output << ") ";
[51587aa]1205
1206 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1207 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1208 forStmt->get_body()->accept( *visitor );
[51587aa]1209 } // if
1210 }
1211
[9857e8d]1212 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1213 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1214 output << "/* null statement */ ;";
[51587aa]1215 }
1216
[9857e8d]1217 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1218 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1219
[51587aa]1220 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1221 output << ";";
[51587aa]1222 } // if
1223 }
1224
[9857e8d]1225 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1226 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1227 stmt->callStmt->accept( *visitor );
1228 }
1229
[6cebfef]1230 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1231 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1232 stmt->stmt->accept( *visitor );
1233 }
1234
[dd020c0]1235 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1236 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1237 decl->get_storageClasses().print( output );
[a7c90d4]1238 } // if
[dd020c0]1239 } // CodeGenerator::handleStorageClass
[9facf3b]1240
1241 std::string genName( DeclarationWithType * decl ) {
[60a8062]1242 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1243 if ( opInfo ) {
1244 return opInfo->outputName;
[9facf3b]1245 } else {
1246 return decl->get_name();
1247 } // if
1248 }
[1931bb01]1249
1250std::string genName( ast::DeclWithType const * decl ) {
1251 if ( const OperatorInfo * opInfo = operatorLookup( decl->name ) ) {
1252 return opInfo->outputName;
1253 } else {
1254 return decl->name;
1255 }
1256}
1257
[51b73452]1258} // namespace CodeGen
[51587aa]1259
1260// Local Variables: //
1261// tab-width: 4 //
1262// mode: c++ //
1263// compile-command: "make install" //
1264// End: //
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