source: src/CodeGen/CodeGenerator.cc@ 3a513d89

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[51587aa]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[71f4e4f]7// CodeGenerator.cc --
[51587aa]8//
9// Author : Richard C. Bilson
10// Created On : Mon May 18 07:44:20 2015
[1931bb01]11// Last Modified By : Andrew Beach
12// Last Modified On : Wed Jun 29 14:34:00 2022
13// Update Count : 542
[51587aa]14//
[3268a58]15#include "CodeGenerator.h"
[51587aa]16
[bf2438c]17#include <cassert> // for assert, assertf
18#include <list> // for _List_iterator, list, list<>::it...
[9feb34b]19#include <sstream> // for stringstream
[51b73452]20
[1931bb01]21#include "AST/Decl.hpp" // for DeclWithType
[bf2438c]22#include "Common/UniqueName.h" // for UniqueName
23#include "GenType.h" // for genType
24#include "InitTweak/InitTweak.h" // for getPointerBase
25#include "OperatorTable.h" // for OperatorInfo, operatorLookup
[07de76b]26#include "SynTree/LinkageSpec.h" // for Spec, Intrinsic
[bf2438c]27#include "SynTree/Attribute.h" // for Attribute
28#include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode
29#include "SynTree/Constant.h" // for Constant
30#include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl
31#include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica...
32#include "SynTree/Initializer.h" // for Initializer, ListInit, Designation
33#include "SynTree/Label.h" // for Label, operator<<
34#include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt
35#include "SynTree/Type.h" // for Type, Type::StorageClasses, Func...
[10a7775]36
[51b73452]37using namespace std;
38
39namespace CodeGen {
[6c4ff37]40 int CodeGenerator::tabsize = 4;
[51587aa]41
[60a8062]42 // The kinds of statements that would ideally be followed by whitespace.
[2b6c1e0]43 bool wantSpacing( Statement * stmt) {
44 return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) ||
[3b0bc16]45 dynamic_cast< WhileDoStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt );
[2b6c1e0]46 }
47
[8688ce1]48 void CodeGenerator::extension( Expression * expr ) {
[8e9cbb2]49 if ( expr->get_extension() ) {
50 output << "__extension__ ";
51 } // if
52 } // extension
53
[8688ce1]54 void CodeGenerator::extension( Declaration * decl ) {
[8e9cbb2]55 if ( decl->get_extension() ) {
56 output << "__extension__ ";
57 } // if
58 } // extension
59
[58dd019]60 void CodeGenerator::asmName( DeclarationWithType * decl ) {
[e612146c]61 if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) {
[58dd019]62 output << " asm ( " << asmName->get_constant()->get_value() << " )";
63 } // if
64 } // extension
65
[888cbe4]66 CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) {
67 labels = &l;
68 return *this;
69 }
70
[8688ce1]71 ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) {
[888cbe4]72 std::list< Label > & labs = *printLabels.labels;
73 // l.unique(); // assumes a sorted list. Why not use set? Does order matter?
74 for ( Label & l : labs ) {
75 output << l.get_name() + ": ";
76 printLabels.cg.genAttributes( l.get_attributes() );
[8688ce1]77 } // for
[888cbe4]78 return output;
79 }
80
[60a8062]81 // Using updateLocation at the beginning of a node and endl within a node should become the method of formating.
[8bafacc]82 void CodeGenerator::updateLocation( CodeLocation const & to ) {
[d22e90f]83 // skip if linemarks shouldn't appear or if codelocation is unset
[42a36d9]84 if ( !options.lineMarks || to.isUnset() ) return;
[d22e90f]85
86 if ( currentLocation.followedBy( to, 0 ) ) {
[8bafacc]87 return;
88 } else if ( currentLocation.followedBy( to, 1 ) ) {
89 output << "\n" << indent;
[d48e529]90 currentLocation.first_line += 1;
[8bafacc]91 } else if ( currentLocation.followedBy( to, 2 ) ) {
92 output << "\n\n" << indent;
[d48e529]93 currentLocation.first_line += 2;
[8bafacc]94 } else {
[d48e529]95 output << "\n# " << to.first_line << " \"" << to.filename
[60a8062]96 << "\"\n" << indent;
[8bafacc]97 currentLocation = to;
98 }
99 output << std::flush;
100 }
[c850687]101
[8bafacc]102 void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) {
103 updateLocation( to->location );
[c850687]104 }
105
[d22e90f]106 // replace endl
107 ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const {
108 // if ( !cg.lineMarks ) {
109 // os << "\n" << cg.indent << std::flush;
110 // }
111 os << "\n" << std::flush;
112 cg.currentLocation.first_line++;
113 // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/";
114 return os;
[c850687]115 }
116
[4e5e6cc]117 CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks, bool printExprTypes ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options( pretty, genC, lineMarks, printExprTypes ), endl( *this ) {}
118 CodeGenerator::CodeGenerator( std::ostream & os, const Options &options ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options(options), endl( *this ) {}
[cda48b6]119
[486341f]120 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]121 // GCC builtins should always be printed unmangled
[42a36d9]122 if ( options.pretty || decl->linkage.is_gcc_builtin ) return decl->name;
[16ba4a6f]123 if ( LinkageSpec::isMangled(decl->linkage) && decl->mangleName != "" ) {
[f326f99]124 // need to incorporate scope level in order to differentiate names for destructors
125 return decl->get_scopedMangleName();
[51587aa]126 } else {
[13073be]127 return decl->name;
[51587aa]128 } // if
129 }
[94b4364]130
[44a81853]131 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
[60a8062]132 if ( attributes.empty() ) return;
[44a81853]133 output << "__attribute__ ((";
134 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]135 output << (*attr)->name;
136 if ( ! (*attr)->parameters.empty() ) {
[44a81853]137 output << "(";
[85b2300]138 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]139 output << ")";
140 } // if
[60a8062]141 if ( ++attr == attributes.end() ) break;
[44a81853]142 output << ","; // separator
143 } // for
144 output << ")) ";
145 } // CodeGenerator::genAttributes
[7baed7d]146
[9857e8d]147 // *** BaseSyntaxNode
[d22e90f]148 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]149 // turn off automatic recursion for all nodes, to allow each visitor to
150 // precisely control the order in which its children are visited.
151 visit_children = false;
[d22e90f]152 updateLocation( node );
[9857e8d]153 }
154
155 // *** BaseSyntaxNode
156 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
157 std::stringstream ss;
158 node->print( ss );
159 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
160 }
[7baed7d]161
[5f08961d]162 // *** Expression
163 void CodeGenerator::previsit( Expression * node ) {
164 previsit( (BaseSyntaxNode *)node );
165 GuardAction( [this, node](){
[60a8062]166 if ( options.printExprTypes && node->result ) {
167 output << " /* " << genType( node->result, "", options ) << " */ ";
168 }
169 } );
[5f08961d]170 }
171
[4810867]172 // *** Declarations
[9857e8d]173 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]174 // deleted decls should never be used, so don't print them
[42a36d9]175 if ( functionDecl->isDeleted && options.genC ) return;
[8e9cbb2]176 extension( functionDecl );
[7baed7d]177 genAttributes( functionDecl->get_attributes() );
178
[51587aa]179 handleStorageClass( functionDecl );
[6e8bd43]180 functionDecl->get_funcSpec().print( output );
[dd020c0]181
[da09ba1]182 Options subOptions = options;
[76f7fc7]183 subOptions.anonymousUnused = functionDecl->has_body();
[da09ba1]184 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), subOptions );
[51587aa]185
[58dd019]186 asmName( functionDecl );
187
[51587aa]188 if ( functionDecl->get_statements() ) {
[9857e8d]189 functionDecl->get_statements()->accept( *visitor );
[51587aa]190 } // if
[3ed994e]191 if ( functionDecl->isDeleted ) {
192 output << " = void";
193 }
[51587aa]194 }
195
[9857e8d]196 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]197 // deleted decls should never be used, so don't print them
[42a36d9]198 if ( objectDecl->isDeleted && options.genC ) return;
[de8d7fb1]199
200 // gcc allows an empty declarator (no name) for bit-fields and C states: 6.7.2.1 Structure and union specifiers,
201 // point 4, page 113: If the (bit field) value is zero, the declaration shall have no declarator. For anything
202 // else, the anonymous name refers to the anonymous object for plan9 inheritance.
203 if ( objectDecl->get_name().empty() && options.genC && ! objectDecl->get_bitfieldWidth() ) {
[e39241b]204 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]205 static UniqueName name = { "__anonymous_object" };
206 objectDecl->set_name( name.newName() );
[de8d7fb1]207 // Stops unused parameter warnings.
208 if ( options.anonymousUnused ) {
209 objectDecl->attributes.push_back( new Attribute( "unused" ) );
210 }
[d9c8a59]211 }
212
[8e9cbb2]213 extension( objectDecl );
[f9cebb5]214 genAttributes( objectDecl->get_attributes() );
215
[51587aa]216 handleStorageClass( objectDecl );
[42a36d9]217 output << genType( objectDecl->get_type(), mangleName( objectDecl ), options.pretty, options.genC );
[71f4e4f]218
[58dd019]219 asmName( objectDecl );
220
[51587aa]221 if ( objectDecl->get_init() ) {
[6c4ff37]222 output << " = ";
[9857e8d]223 objectDecl->get_init()->accept( *visitor );
[51587aa]224 } // if
[3ed994e]225 if ( objectDecl->isDeleted ) {
226 output << " = void";
227 }
[3778cb2]228
[51587aa]229 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]230 output << ":";
[9857e8d]231 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]232 } // if
233 }
234
[5f642e38]235 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[42a36d9]236 if( ! aggDecl->parameters.empty() && ! options.genC ) {
[e39241b]237 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
238 output << "forall(";
[0b3b2ae]239 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]240 output << ")" << endl;
[e6cee92]241 output << indent;
[e39241b]242 }
243
[593370c]244 output << kind;
[0b3b2ae]245 genAttributes( aggDecl->attributes );
246 output << aggDecl->name;
[71f4e4f]247
[2c57025]248 if ( aggDecl->has_body() ) {
[0b3b2ae]249 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]250 output << " {" << endl;
[51587aa]251
[f7cb0bc]252 ++indent;
[3778cb2]253 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]254 output << indent;
[9857e8d]255 (*i)->accept( *visitor );
[6c4ff37]256 output << ";" << endl;
[3778cb2]257 } // for
[51587aa]258
[f7cb0bc]259 --indent;
[51587aa]260
[cda48b6]261 output << indent << "}";
[17cd4eb]262 } // if
[51587aa]263 }
[17cd4eb]264
[9857e8d]265 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]266 extension( structDecl );
[5f642e38]267 handleAggregate( structDecl, "struct " );
[51587aa]268 }
[17cd4eb]269
[9857e8d]270 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]271 extension( unionDecl );
[5f642e38]272 handleAggregate( unionDecl, "union " );
[51587aa]273 }
[71f4e4f]274
[8bb86ce]275 template<typename pass_type>
276 inline void genEnumInitializer( PassVisitor<pass_type> * visitor, Type * baseType, std::ostream & output,
277 Initializer * init, long long * cur_val, Options options) {
278 auto baseTypeAsBasic = baseType ? dynamic_cast<BasicType *>( baseType ) : nullptr;
279 if ( init ) { // If value has an explicit initiazatior
280 output << " = ";
281 output << "(" << genType(baseType, "", options) << ")";
282 init->accept( *visitor );
283 if ( baseTypeAsBasic && baseTypeAsBasic->isInteger() ) { // if it is an integral type and initilizer offered,
284 // need to update the cur_val
285 Expression* expr = ((SingleInit *)(init))->value;
286 while ( auto temp = dynamic_cast<CastExpr *>(expr) ) { // unwrap introduced cast
287 expr = temp->arg;
288 }
289 *cur_val = ((ConstantExpr *)expr)->constant.get_ival()+1;
290 }
291 } else if ( baseTypeAsBasic && baseTypeAsBasic->isInteger() ) { // integral implicitly init to cur_val + 1
292 output << " = " << "(" << genType(baseType, "", options) << ")";
293 output << (*cur_val)++;
294 }
295 }
296
[f4e01f1]297 void CodeGenerator::handleData( EnumDecl * ) {
[561354f]298 // output << " /** data type */" << endl;
299 // for ( StructDecl * decl : dataDecl->data_constructors ) {
300 // postvisit(decl);
301 // output << ";" << endl;
302 // }
303 // postvisit( dataDecl->data_union );
304 // output << ";" << endl;
305 // postvisit( dataDecl->tag );
306 // output << ";" << endl;
307 // postvisit( dataDecl->tag_union );
308 // output << ";" << endl;
309 assert(false);
[28f8f15]310 }
311
[9857e8d]312 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[561354f]313 // if ( enumDecl->data_constructors.size() > 0 ) return handleData( enumDecl );
[28f8f15]314 extension( enumDecl );
[8e9cbb2]315 std::list< Declaration* > &memb = enumDecl->get_members();
[d8e2a09]316 if (enumDecl->base && ! memb.empty()) {
[8bb86ce]317 long long cur_val = 0;
[51587aa]318 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]319 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]320 assert( obj );
[0bd46fd]321 output << "static ";
[9749d2fa]322 output << genType(enumDecl->base, mangleName( obj ), options);
[8bb86ce]323 genEnumInitializer( visitor, enumDecl->base, output, obj->get_init(), &cur_val, options);
[4390fb6]324 output << ";" << endl;
[51587aa]325 } // for
[4390fb6]326 } else {
327 output << "enum ";
328 genAttributes( enumDecl->get_attributes() );
329
330 output << enumDecl->get_name();
331
332 if ( ! memb.empty() ) {
333 output << " {" << endl;
334
335 ++indent;
336 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
337 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
338 assert( obj );
339 output << indent << mangleName( obj );
340 if ( obj->get_init() ) {
341 output << " = ";
342 obj->get_init()->accept( *visitor );
343 } // if
344 output << "," << endl;
345 } // for
[f7cb0bc]346 --indent;
[cda48b6]347 output << indent << "}";
[4390fb6]348 } // if
[51587aa]349 } // if
350 }
[71f4e4f]351
[f4e01f1]352 void CodeGenerator::postvisit( AdtDecl * ) {
353 // TODO
354 }
355
[9857e8d]356 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]357 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]358 extension( traitDecl );
359 handleAggregate( traitDecl, "trait " );
360 }
[71f4e4f]361
[9857e8d]362 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]363 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]364 output << "typedef ";
[42a36d9]365 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]366 }
[71f4e4f]367
[9857e8d]368 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]369 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]370 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]371 if ( typeDecl->sized ) {
[ab4bff5]372 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]373 }
[ab4bff5]374 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]375 output << " | { ";
[ab4bff5]376 for ( DeclarationWithType * assert : typeDecl->assertions ) {
377 assert->accept( *visitor );
378 output << "; ";
379 }
[a0c7dc36]380 output << " }";
[e39241b]381 }
[51587aa]382 }
383
[92fea32]384 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
385 output << "_Static_assert(";
386 assertDecl->condition->accept( *visitor );
387 output << ", ";
388 assertDecl->message->accept( *visitor );
389 output << ")";
390 }
391
[9857e8d]392 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]393 std::list< Expression * > designators = designation->get_designators();
[e45215c]394 if ( designators.size() == 0 ) return;
[e4d829b]395 for ( Expression * des : designators ) {
[62423350]396 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
397 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
398 output << ".";
[9857e8d]399 des->accept( *visitor );
[e4d829b]400 } else {
[3e54399]401 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]402 output << "[";
[9857e8d]403 des->accept( *visitor );
[62423350]404 output << "]";
[3778cb2]405 } // if
406 } // for
[3eb1653]407 output << " = ";
[e45215c]408 }
409
[9857e8d]410 void CodeGenerator::postvisit( SingleInit * init ) {
411 init->get_value()->accept( *visitor );
[51587aa]412 }
413
[9857e8d]414 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]415 auto initBegin = init->begin();
416 auto initEnd = init->end();
417 auto desigBegin = init->get_designations().begin();
418 auto desigEnd = init->get_designations().end();
419
[6c4ff37]420 output << "{ ";
[e4d829b]421 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]422 (*desigBegin)->accept( *visitor );
423 (*initBegin)->accept( *visitor );
[e4d829b]424 ++initBegin, ++desigBegin;
425 if ( initBegin != initEnd ) {
426 output << ", ";
427 }
428 }
[6c4ff37]429 output << " }";
[e4d829b]430 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]431 }
432
[d22e90f]433 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]434 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]435 // pseudo-output for constructor/destructor pairs
[d22e90f]436 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]437 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]438 output << ", " << endl << indent << "dtor: ";
[9857e8d]439 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]440 output << endl << --indent << "}";
[fc638d2]441 }
442
[9857e8d]443 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]444 output << constant->get_value();
[51587aa]445 }
446
[4810867]447 // *** Expressions
[9857e8d]448 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]449 extension( applicationExpr );
[8688ce1]450 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]451 const OperatorInfo * opInfo;
452 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]453 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]454 switch ( opInfo->type ) {
[51587aa]455 case OT_INDEX:
456 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]457 (*arg++)->accept( *visitor );
[6c4ff37]458 output << "[";
[9857e8d]459 (*arg)->accept( *visitor );
[6c4ff37]460 output << "]";
[51587aa]461 break;
[71f4e4f]462
[51587aa]463 case OT_CALL:
[356189a]464 // there are no intrinsic definitions of the function call operator
[51587aa]465 assert( false );
466 break;
[71f4e4f]467
[f1e012b]468 case OT_CTOR:
[c2ce2350]469 case OT_DTOR:
[356189a]470 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]471 // the expression fed into a single parameter constructor or destructor may contain side
472 // effects, so must still output this expression
[64071c2]473 output << "(";
[9857e8d]474 (*arg++)->accept( *visitor );
[60a8062]475 output << ") /* " << opInfo->inputName << " */";
[356189a]476 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]477 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]478 output << "(";
[9857e8d]479 (*arg++)->accept( *visitor );
[60a8062]480 output << opInfo->symbol;
[9857e8d]481 (*arg)->accept( *visitor );
[60a8062]482 output << ") /* " << opInfo->inputName << " */";
[356189a]483 } else {
[c2ce2350]484 // no constructors with 0 or more than 2 parameters
[356189a]485 assert( false );
[8688ce1]486 } // if
[356189a]487 break;
[f1e012b]488
[51587aa]489 case OT_PREFIX:
490 case OT_PREFIXASSIGN:
491 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]492 output << "(";
[60a8062]493 output << opInfo->symbol;
[9857e8d]494 (*arg)->accept( *visitor );
[6c4ff37]495 output << ")";
[51587aa]496 break;
[71f4e4f]497
[51587aa]498 case OT_POSTFIX:
499 case OT_POSTFIXASSIGN:
500 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]501 (*arg)->accept( *visitor );
[60a8062]502 output << opInfo->symbol;
[51587aa]503 break;
504
[f1e012b]505
[51587aa]506 case OT_INFIX:
507 case OT_INFIXASSIGN:
508 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]509 output << "(";
[9857e8d]510 (*arg++)->accept( *visitor );
[60a8062]511 output << opInfo->symbol;
[9857e8d]512 (*arg)->accept( *visitor );
[6c4ff37]513 output << ")";
[51587aa]514 break;
[71f4e4f]515
[51587aa]516 case OT_CONSTANT:
[721f17a]517 case OT_LABELADDRESS:
518 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]519 assert( false );
[3778cb2]520 } // switch
[9d55ff6]521 } else if( varExpr->get_var()->get_linkage() == LinkageSpec::BuiltinCFA && varExpr->get_var()->get_name() == "intptr" ) {
522 // THIS is a hack to make it a constant until a proper constexpr solution is created
523 output << "((void*)";
524 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
525 (*arg++)->accept( *visitor );
526 output << ")";
[17cd4eb]527 } else {
[9857e8d]528 varExpr->accept( *visitor );
[6c4ff37]529 output << "(";
[51587aa]530 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]531 output << ")";
[17cd4eb]532 } // if
[51587aa]533 } else {
[9857e8d]534 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]535 output << "(";
[51587aa]536 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]537 output << ")";
[51587aa]538 } // if
539 }
[71f4e4f]540
[9857e8d]541 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]542 extension( untypedExpr );
[22bc276]543 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]544 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
545 if ( opInfo ) {
[22bc276]546 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]547 switch ( opInfo->type ) {
[51587aa]548 case OT_INDEX:
[22bc276]549 assert( untypedExpr->args.size() == 2 );
[9857e8d]550 (*arg++)->accept( *visitor );
[6c4ff37]551 output << "[";
[9857e8d]552 (*arg)->accept( *visitor );
[6c4ff37]553 output << "]";
[51587aa]554 break;
[71f4e4f]555
[51587aa]556 case OT_CALL:
[f1e012b]557 assert( false );
558
[c2ce2350]559 case OT_CTOR:
560 case OT_DTOR:
[22bc276]561 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]562 // the expression fed into a single parameter constructor or destructor may contain side
563 // effects, so must still output this expression
[64071c2]564 output << "(";
[9857e8d]565 (*arg++)->accept( *visitor );
[60a8062]566 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]567 } else if ( untypedExpr->get_args().size() == 2 ) {
568 // intrinsic two parameter constructors are essentially bitwise assignment
569 output << "(";
[9857e8d]570 (*arg++)->accept( *visitor );
[60a8062]571 output << opInfo->symbol;
[9857e8d]572 (*arg)->accept( *visitor );
[60a8062]573 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]574 } else {
575 // no constructors with 0 or more than 2 parameters
[42a36d9]576 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]577 output << "(";
578 (*arg++)->accept( *visitor );
[60a8062]579 output << opInfo->symbol << "{ ";
[22bc276]580 genCommaList( arg, untypedExpr->args.end() );
[60a8062]581 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]582 } // if
[51587aa]583 break;
[71f4e4f]584
[51587aa]585 case OT_PREFIX:
586 case OT_PREFIXASSIGN:
[de62360d]587 case OT_LABELADDRESS:
[22bc276]588 assert( untypedExpr->args.size() == 1 );
[6c4ff37]589 output << "(";
[60a8062]590 output << opInfo->symbol;
[9857e8d]591 (*arg)->accept( *visitor );
[6c4ff37]592 output << ")";
[51587aa]593 break;
[71f4e4f]594
[51587aa]595 case OT_POSTFIX:
596 case OT_POSTFIXASSIGN:
[22bc276]597 assert( untypedExpr->args.size() == 1 );
[9857e8d]598 (*arg)->accept( *visitor );
[60a8062]599 output << opInfo->symbol;
[51587aa]600 break;
[71f4e4f]601
[51587aa]602 case OT_INFIX:
603 case OT_INFIXASSIGN:
[22bc276]604 assert( untypedExpr->args.size() == 2 );
[6c4ff37]605 output << "(";
[9857e8d]606 (*arg++)->accept( *visitor );
[60a8062]607 output << opInfo->symbol;
[9857e8d]608 (*arg)->accept( *visitor );
[6c4ff37]609 output << ")";
[51587aa]610 break;
[71f4e4f]611
[51587aa]612 case OT_CONSTANT:
613 // there are no intrinsic definitions of 0 or 1 as functions
614 assert( false );
[3778cb2]615 } // switch
[51587aa]616 } else {
[22bc276]617 // builtin routines
618 nameExpr->accept( *visitor );
619 output << "(";
620 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
621 output << ")";
[51587aa]622 } // if
623 } else {
[22bc276]624 untypedExpr->function->accept( *visitor );
[6c4ff37]625 output << "(";
[22bc276]626 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]627 output << ")";
[51587aa]628 } // if
629 }
[71f4e4f]630
[9857e8d]631 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]632 rangeExpr->low->accept( *visitor );
[064e3ff]633 output << " ... ";
[22bc276]634 rangeExpr->high->accept( *visitor );
[064e3ff]635 }
636
[9857e8d]637 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]638 extension( nameExpr );
[60a8062]639 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
640 if ( opInfo ) {
641 if ( opInfo->type == OT_CONSTANT ) {
642 output << opInfo->symbol;
[5ea7a22]643 } else {
[60a8062]644 output << opInfo->outputName;
[5ea7a22]645 }
[51587aa]646 } else {
[6c4ff37]647 output << nameExpr->get_name();
[51587aa]648 } // if
649 }
[71f4e4f]650
[6e50a6b]651 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
652 extension( dimensionExpr );
653 output << "/*non-type*/" << dimensionExpr->get_name();
654 }
655
[9857e8d]656 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]657 extension( addressExpr );
[6c4ff37]658 output << "(&";
[9857e8d]659 addressExpr->arg->accept( *visitor );
[6c4ff37]660 output << ")";
[51587aa]661 }
662
[9857e8d]663 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]664 extension( addressExpr );
665 output << "(&&" << addressExpr->arg << ")";
666 }
667
[9857e8d]668 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]669 extension( castExpr );
[803deb1]670 output << "(";
[906e24d]671 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]672 output << "(void)";
[d104b02]673 } else {
674 // at least one result type of cast.
675 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
676 // an lvalue cast, this has been taken out.
[803deb1]677 output << "(";
[42a36d9]678 output << genType( castExpr->get_result(), "", options );
[71f4e4f]679 output << ")";
[3778cb2]680 } // if
[da9d79b]681 castExpr->arg->accept( *visitor );
682 output << ")";
683 }
684
685 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]686 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]687 extension( castExpr );
688 output << "((" << castExpr->targetString() << " &)";
689 castExpr->arg->accept( *visitor );
[803deb1]690 output << ")";
[51587aa]691 }
[71f4e4f]692
[9857e8d]693 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]694 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]695 extension( castExpr );
696 output << "(virtual ";
[9857e8d]697 castExpr->get_arg()->accept( *visitor );
[a5f0529]698 output << ")";
699 }
700
[9857e8d]701 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]702 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]703 extension( memberExpr );
[9857e8d]704 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]705 output << ".";
[9857e8d]706 memberExpr->get_member()->accept( *visitor );
[51587aa]707 }
[71f4e4f]708
[9857e8d]709 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]710 extension( memberExpr );
[9857e8d]711 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]712 output << "." << mangleName( memberExpr->get_member() );
[51587aa]713 }
[71f4e4f]714
[9857e8d]715 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]716 extension( variableExpr );
[60a8062]717 const OperatorInfo * opInfo;
[b99fd56]718 if( dynamic_cast<ZeroType*>( variableExpr->get_var()->get_type() ) ) {
719 output << "0";
720 } else if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
[60a8062]721 output << opInfo->symbol;
[51587aa]722 } else {
[6c4ff37]723 output << mangleName( variableExpr->get_var() );
[51587aa]724 } // if
725 }
[71f4e4f]726
[9857e8d]727 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]728 assert( constantExpr->get_constant() );
[e04ef3a]729 extension( constantExpr );
[9857e8d]730 constantExpr->get_constant()->accept( *visitor );
[51587aa]731 }
[71f4e4f]732
[9857e8d]733 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]734 extension( sizeofExpr );
[6c4ff37]735 output << "sizeof(";
[51587aa]736 if ( sizeofExpr->get_isType() ) {
[42a36d9]737 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]738 } else {
[9857e8d]739 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]740 } // if
[6c4ff37]741 output << ")";
[51587aa]742 }
[47534159]743
[9857e8d]744 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]745 // use GCC extension to avoid bumping std to C11
[8e9cbb2]746 extension( alignofExpr );
[47534159]747 output << "__alignof__(";
[25a054f]748 if ( alignofExpr->get_isType() ) {
[42a36d9]749 output << genType( alignofExpr->get_type(), "", options );
[47534159]750 } else {
[9857e8d]751 alignofExpr->get_expr()->accept( *visitor );
[47534159]752 } // if
753 output << ")";
754 }
[71f4e4f]755
[9857e8d]756 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]757 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]758 output << "offsetof(";
[42a36d9]759 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]760 output << ", " << offsetofExpr->get_member();
761 output << ")";
[2a4b088]762 }
763
[9857e8d]764 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]765 // use GCC builtin
766 output << "__builtin_offsetof(";
[42a36d9]767 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]768 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]769 output << ")";
770 }
[d63eeb0]771
[9857e8d]772 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]773 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
774 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]775 }
[70a06f6]776
[9857e8d]777 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]778 extension( logicalExpr );
[6c4ff37]779 output << "(";
[9857e8d]780 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]781 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]782 output << " && ";
[51587aa]783 } else {
[6c4ff37]784 output << " || ";
[51587aa]785 } // if
[9857e8d]786 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]787 output << ")";
[51587aa]788 }
[71f4e4f]789
[9857e8d]790 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]791 extension( conditionalExpr );
[6c4ff37]792 output << "(";
[9857e8d]793 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]794 output << " ? ";
[9857e8d]795 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]796 output << " : ";
[9857e8d]797 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]798 output << ")";
[51587aa]799 }
[71f4e4f]800
[9857e8d]801 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]802 extension( commaExpr );
[6c4ff37]803 output << "(";
[42a36d9]804 if ( options.genC ) {
[8a6cf7e]805 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
806 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
807 }
[9857e8d]808 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]809 output << " , ";
[9857e8d]810 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]811 output << ")";
[51587aa]812 }
[71f4e4f]813
[9857e8d]814 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]815 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]816 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]817 }
818
[9857e8d]819 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]820 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]821 extension( tupleExpr );
[e39241b]822 output << "[";
823 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
824 output << "]";
825 }
[907eccb]826
[9857e8d]827 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]828 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]829 extension( tupleExpr );
[e39241b]830 output << "[";
831 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
832 output << "]";
833 }
[71f4e4f]834
[9857e8d]835 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]836 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]837 extension( tupleExpr );
[9857e8d]838 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]839 output << "." << tupleExpr->get_index();
840 }
841
[9857e8d]842 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]843 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
844 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
845 if ( ! options.genC ) {
846 output << genType( typeExpr->get_type(), "", options );
[e4d829b]847 }
[e39241b]848 }
[2b6c1e0]849
[9857e8d]850 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]851 if ( !asmExpr->inout.empty() ) {
[7f5566b]852 output << "[ ";
[665f432]853 output << asmExpr->inout;
[7f5566b]854 output << " ] ";
855 } // if
[665f432]856 asmExpr->constraint->accept( *visitor );
[7f5566b]857 output << " ( ";
[665f432]858 asmExpr->operand->accept( *visitor );
[7f5566b]859 output << " )";
860 }
861
[9857e8d]862 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]863 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]864 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]865 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]866 }
867
[9857e8d]868 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]869 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]870 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]871 unqExpr->get_expr()->accept( *visitor );
[d104b02]872 output << " }";
873 }
874
[9857e8d]875 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]876 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]877 output << "({" << endl;
[f7cb0bc]878 ++indent;
[3c13c03]879 unsigned int numStmts = stmts.size();
880 unsigned int i = 0;
881 for ( Statement * stmt : stmts ) {
[058f549]882 output << indent << printLabels( stmt->get_labels() );
[3c13c03]883 if ( i+1 == numStmts ) {
884 // last statement in a statement expression needs to be handled specially -
885 // cannot cast to void, otherwise the expression statement has no value
886 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]887 exprStmt->expr->accept( *visitor );
[3c13c03]888 output << ";" << endl;
889 ++i;
890 break;
891 }
892 }
[9857e8d]893 stmt->accept( *visitor );
[3c13c03]894 output << endl;
895 if ( wantSpacing( stmt ) ) {
896 output << endl;
897 } // if
898 ++i;
899 }
[f7cb0bc]900 --indent;
[3c13c03]901 output << indent << "})";
[6eb8948]902 }
903
[4e8949f]904 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]905 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]906 expr->callExpr->accept( *visitor );
907 }
908
[44b4114]909 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]910 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]911 expr->expr->accept( *visitor );
912 }
913
[0f79853]914 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]915 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]916 arg->expr->accept( *visitor );
917 }
918
[d807ca28]919 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]920 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]921 output << "_Generic(";
922 expr->control->accept( *visitor );
923 output << ", ";
924 unsigned int numAssocs = expr->associations.size();
925 unsigned int i = 0;
926 for ( GenericExpr::Association & assoc : expr->associations ) {
927 if (assoc.isDefault) {
928 output << "default: ";
929 } else {
[42a36d9]930 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]931 }
932 assoc.expr->accept( *visitor );
933 if ( i+1 != numAssocs ) {
934 output << ", ";
935 }
936 i++;
937 }
938 output << ")";
939 }
940
[4810867]941 // *** Statements
[9857e8d]942 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]943 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]944 output << "{" << endl;
[51587aa]945
[f7cb0bc]946 ++indent;
[51587aa]947
[7f5566b]948 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]949 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]950 (*i)->accept( *visitor );
[2b6c1e0]951
[6c4ff37]952 output << endl;
[2b6c1e0]953 if ( wantSpacing( *i ) ) {
954 output << endl;
[3778cb2]955 } // if
[8688ce1]956 } // for
[f7cb0bc]957 --indent;
[51587aa]958
[cda48b6]959 output << indent << "}";
[51587aa]960 }
961
[9857e8d]962 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]963 assert( exprStmt );
[42a36d9]964 if ( options.genC ) {
[262f085f]965 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]966 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]967 }
[9857e8d]968 exprStmt->get_expr()->accept( *visitor );
[3eb1653]969 output << ";";
[51587aa]970 }
971
[9857e8d]972 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]973 output << "asm ";
974 if ( asmStmt->get_voltile() ) output << "volatile ";
975 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
976 output << "( ";
[9857e8d]977 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]978 output << " : ";
979 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
980 output << " : ";
981 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
982 output << " : ";
983 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
984 if ( ! asmStmt->get_gotolabels().empty() ) {
985 output << " : ";
986 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
987 output << *begin++;
988 if ( begin == asmStmt->get_gotolabels().end() ) break;
989 output << ", ";
990 } // for
991 } // if
[d7312ac]992 output << " );";
[7f5566b]993 }
994
[9857e8d]995 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]996 output << "asm ";
997 AsmStmt * asmStmt = asmDecl->get_stmt();
998 output << "( ";
[9857e8d]999 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]1000 output << " )";
[e994912]1001 }
1002
[2d019af]1003 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
1004 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
1005 }
1006
[cc32d83]1007 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]1008 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]1009 }
1010
[9857e8d]1011 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]1012 output << "if ( ";
[9857e8d]1013 ifStmt->get_condition()->accept( *visitor );
[7f5566b]1014 output << " ) ";
[51587aa]1015
[3b0bc16]1016 ifStmt->get_then()->accept( *visitor );
[51587aa]1017
[3b0bc16]1018 if ( ifStmt->get_else() != 0) {
[2b6c1e0]1019 output << " else ";
[3b0bc16]1020 ifStmt->get_else()->accept( *visitor );
[51587aa]1021 } // if
1022 }
1023
[9857e8d]1024 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]1025 output << "switch ( ";
[9857e8d]1026 switchStmt->get_condition()->accept( *visitor );
[7f5566b]1027 output << " ) ";
[71f4e4f]1028
[d22e90f]1029 output << "{" << endl;
[f7cb0bc]1030 ++indent;
[9857e8d]1031 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]1032 --indent;
[cda48b6]1033 output << indent << "}";
[51587aa]1034 }
1035
[9857e8d]1036 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1037 updateLocation( caseStmt );
[1dcd9554]1038 output << indent;
[eb3261f]1039 if ( caseStmt->isDefault()) {
[2b6c1e0]1040 output << "default";
[eb3261f]1041 } else {
[2b6c1e0]1042 output << "case ";
[9857e8d]1043 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1044 } // if
[d22e90f]1045 output << ":" << endl;
[71f4e4f]1046
[51587aa]1047 std::list<Statement *> sts = caseStmt->get_statements();
1048
[f7cb0bc]1049 ++indent;
[51587aa]1050 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1051 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1052 (*i)->accept( *visitor );
[6c4ff37]1053 output << endl;
[3778cb2]1054 } // for
[f7cb0bc]1055 --indent;
[51587aa]1056 }
1057
[9857e8d]1058 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1059 switch ( branchStmt->get_type()) {
1060 case BranchStmt::Goto:
1061 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1062 output << "goto " << branchStmt->get_target();
[71f4e4f]1063 else {
[51587aa]1064 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1065 output << "goto *";
[9857e8d]1066 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1067 } // if
1068 } // if
1069 break;
1070 case BranchStmt::Break:
[6c4ff37]1071 output << "break";
[51587aa]1072 break;
1073 case BranchStmt::Continue:
[6c4ff37]1074 output << "continue";
[51587aa]1075 break;
[7c2a7b6]1076 case BranchStmt::FallThrough:
1077 case BranchStmt::FallThroughDefault:
[42a36d9]1078 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1079 output << "fallthru";
[7c2a7b6]1080 break;
[6180274]1081 default: ; // prevent warning
[3778cb2]1082 } // switch
[7c2a7b6]1083 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1084 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1085 if ( ! branchStmt->get_target().empty() ) {
1086 output << " " << branchStmt->get_target();
1087 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1088 output << " default";
1089 }
1090 }
[2b6c1e0]1091 output << ";";
[51587aa]1092 }
1093
[9857e8d]1094 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1095 output << "return ";
[9857e8d]1096 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1097 output << ";";
[51587aa]1098 }
1099
[9857e8d]1100 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1101 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1102
1103 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1104 "throw" : "throwResume");
[daf1af8]1105 if (throwStmt->get_expr()) {
1106 output << " ";
[9857e8d]1107 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1108 }
1109 if (throwStmt->get_target()) {
1110 output << " _At ";
[9857e8d]1111 throwStmt->get_target()->accept( *visitor );
[daf1af8]1112 }
1113 output << ";";
1114 }
[e4ea10b7]1115 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1116 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1117
1118 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1119 "catch" : "catchResume");
[e4ea10b7]1120 output << "( ";
1121 stmt->decl->accept( *visitor );
1122 output << " ) ";
1123
1124 if( stmt->cond ) {
1125 output << "if/when(?) (";
1126 stmt->cond->accept( *visitor );
1127 output << ") ";
1128 }
1129 stmt->body->accept( *visitor );
1130 }
1131
1132 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1133 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1134
1135 bool first = true;
1136 for( auto & clause : stmt->clauses ) {
1137 if(first) { output << "or "; first = false; }
1138 if( clause.condition ) {
1139 output << "when(";
1140 stmt->timeout.condition->accept( *visitor );
1141 output << ") ";
1142 }
1143 output << "waitfor(";
1144 clause.target.function->accept( *visitor );
1145 for( Expression * expr : clause.target.arguments ) {
1146 output << ",";
1147 expr->accept( *visitor );
1148 }
1149 output << ") ";
1150 clause.statement->accept( *visitor );
1151 }
1152
1153 if( stmt->timeout.statement ) {
1154 output << "or ";
1155 if( stmt->timeout.condition ) {
1156 output << "when(";
1157 stmt->timeout.condition->accept( *visitor );
1158 output << ") ";
1159 }
1160 output << "timeout(";
1161 stmt->timeout.time->accept( *visitor );
1162 output << ") ";
1163 stmt->timeout.statement->accept( *visitor );
1164 }
1165
1166 if( stmt->orelse.statement ) {
1167 output << "or ";
1168 if( stmt->orelse.condition ) {
1169 output << "when(";
1170 stmt->orelse.condition->accept( *visitor );
1171 output << ")";
1172 }
1173 output << "else ";
1174 stmt->orelse.statement->accept( *visitor );
1175 }
1176 }
1177
[55d6e8de]1178 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1179 if ( ! options.genC ) {
[55d6e8de]1180 output << "with ( ";
1181 genCommaList( with->exprs.begin(), with->exprs.end() );
1182 output << " ) ";
1183 }
1184 with->stmt->accept( *visitor );
1185 }
[daf1af8]1186
[3b0bc16]1187 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1188 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1189 output << "do";
[321a2481]1190 } else {
[d7312ac]1191 output << "while (";
[3b0bc16]1192 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1193 output << ")";
[51587aa]1194 } // if
[2b6c1e0]1195 output << " ";
[51587aa]1196
[3b0bc16]1197 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1198 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1199
[cda48b6]1200 output << indent;
[51587aa]1201
[3b0bc16]1202 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1203 output << " while (";
[3b0bc16]1204 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1205 output << ");";
[51587aa]1206 } // if
1207 }
1208
[9857e8d]1209 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1210 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1211 output << "for (;";
[51587aa]1212
[321a2481]1213 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1214 forStmt->get_condition()->accept( *visitor );
[3778cb2]1215 } // if
[6c4ff37]1216 output << ";";
[51587aa]1217
[321a2481]1218 if ( forStmt->get_increment() != 0 ) {
1219 // cast the top-level expression to void to reduce gcc warnings.
1220 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1221 expr->accept( *visitor );
[3778cb2]1222 } // if
[2b6c1e0]1223 output << ") ";
[51587aa]1224
1225 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1226 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1227 forStmt->get_body()->accept( *visitor );
[51587aa]1228 } // if
1229 }
1230
[9857e8d]1231 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1232 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1233 output << "/* null statement */ ;";
[51587aa]1234 }
1235
[9857e8d]1236 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1237 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1238
[51587aa]1239 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1240 output << ";";
[51587aa]1241 } // if
1242 }
1243
[9857e8d]1244 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1245 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1246 stmt->callStmt->accept( *visitor );
1247 }
1248
[6cebfef]1249 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1250 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1251 stmt->stmt->accept( *visitor );
1252 }
1253
[dd020c0]1254 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1255 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1256 decl->get_storageClasses().print( output );
[a7c90d4]1257 } // if
[dd020c0]1258 } // CodeGenerator::handleStorageClass
[9facf3b]1259
1260 std::string genName( DeclarationWithType * decl ) {
[60a8062]1261 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1262 if ( opInfo ) {
1263 return opInfo->outputName;
[9facf3b]1264 } else {
1265 return decl->get_name();
1266 } // if
1267 }
[1931bb01]1268
1269std::string genName( ast::DeclWithType const * decl ) {
1270 if ( const OperatorInfo * opInfo = operatorLookup( decl->name ) ) {
1271 return opInfo->outputName;
1272 } else {
1273 return decl->name;
1274 }
1275}
1276
[51b73452]1277} // namespace CodeGen
[51587aa]1278
1279// Local Variables: //
1280// tab-width: 4 //
1281// mode: c++ //
1282// compile-command: "make install" //
1283// End: //
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