source: src/CodeGen/CodeGenerator.cc@ b787cad

ADT ast-experimental enum pthread-emulation qualifiedEnum
Last change on this file since b787cad was d8e2a09, checked in by JiadaL <j82liang@…>, 3 years ago

Merge with master
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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
[de8d7fb1]11// Last Modified By : Peter A. Buhr
[6180274]12// Last Modified On : Wed Feb 2 20:30:30 2022
13// Update Count : 541
[51587aa]14//
[3268a58]15#include "CodeGenerator.h"
[51587aa]16
[bf2438c]17#include <cassert> // for assert, assertf
18#include <list> // for _List_iterator, list, list<>::it...
[51b73452]19
[bf2438c]20#include "Common/UniqueName.h" // for UniqueName
21#include "Common/utility.h" // for CodeLocation, toString
22#include "GenType.h" // for genType
23#include "InitTweak/InitTweak.h" // for getPointerBase
24#include "OperatorTable.h" // for OperatorInfo, operatorLookup
[07de76b]25#include "SynTree/LinkageSpec.h" // for Spec, Intrinsic
[bf2438c]26#include "SynTree/Attribute.h" // for Attribute
27#include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode
28#include "SynTree/Constant.h" // for Constant
29#include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl
30#include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica...
31#include "SynTree/Initializer.h" // for Initializer, ListInit, Designation
32#include "SynTree/Label.h" // for Label, operator<<
33#include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt
34#include "SynTree/Type.h" // for Type, Type::StorageClasses, Func...
[10a7775]35
[51b73452]36using namespace std;
37
38namespace CodeGen {
[6c4ff37]39 int CodeGenerator::tabsize = 4;
[51587aa]40
[60a8062]41 // The kinds of statements that would ideally be followed by whitespace.
[2b6c1e0]42 bool wantSpacing( Statement * stmt) {
43 return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) ||
[3b0bc16]44 dynamic_cast< WhileDoStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt );
[2b6c1e0]45 }
46
[8688ce1]47 void CodeGenerator::extension( Expression * expr ) {
[8e9cbb2]48 if ( expr->get_extension() ) {
49 output << "__extension__ ";
50 } // if
51 } // extension
52
[8688ce1]53 void CodeGenerator::extension( Declaration * decl ) {
[8e9cbb2]54 if ( decl->get_extension() ) {
55 output << "__extension__ ";
56 } // if
57 } // extension
58
[58dd019]59 void CodeGenerator::asmName( DeclarationWithType * decl ) {
[e612146c]60 if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) {
[58dd019]61 output << " asm ( " << asmName->get_constant()->get_value() << " )";
62 } // if
63 } // extension
64
[888cbe4]65 CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) {
66 labels = &l;
67 return *this;
68 }
69
[8688ce1]70 ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) {
[888cbe4]71 std::list< Label > & labs = *printLabels.labels;
72 // l.unique(); // assumes a sorted list. Why not use set? Does order matter?
73 for ( Label & l : labs ) {
74 output << l.get_name() + ": ";
75 printLabels.cg.genAttributes( l.get_attributes() );
[8688ce1]76 } // for
[888cbe4]77 return output;
78 }
79
[60a8062]80 // Using updateLocation at the beginning of a node and endl within a node should become the method of formating.
[8bafacc]81 void CodeGenerator::updateLocation( CodeLocation const & to ) {
[d22e90f]82 // skip if linemarks shouldn't appear or if codelocation is unset
[42a36d9]83 if ( !options.lineMarks || to.isUnset() ) return;
[d22e90f]84
85 if ( currentLocation.followedBy( to, 0 ) ) {
[8bafacc]86 return;
87 } else if ( currentLocation.followedBy( to, 1 ) ) {
88 output << "\n" << indent;
[d48e529]89 currentLocation.first_line += 1;
[8bafacc]90 } else if ( currentLocation.followedBy( to, 2 ) ) {
91 output << "\n\n" << indent;
[d48e529]92 currentLocation.first_line += 2;
[8bafacc]93 } else {
[d48e529]94 output << "\n# " << to.first_line << " \"" << to.filename
[60a8062]95 << "\"\n" << indent;
[8bafacc]96 currentLocation = to;
97 }
98 output << std::flush;
99 }
[c850687]100
[8bafacc]101 void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) {
102 updateLocation( to->location );
[c850687]103 }
104
[d22e90f]105 // replace endl
106 ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const {
107 // if ( !cg.lineMarks ) {
108 // os << "\n" << cg.indent << std::flush;
109 // }
110 os << "\n" << std::flush;
111 cg.currentLocation.first_line++;
112 // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/";
113 return os;
[c850687]114 }
115
[4e5e6cc]116 CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks, bool printExprTypes ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options( pretty, genC, lineMarks, printExprTypes ), endl( *this ) {}
117 CodeGenerator::CodeGenerator( std::ostream & os, const Options &options ) : indent( 0, CodeGenerator::tabsize ), output( os ), printLabels( *this ), options(options), endl( *this ) {}
[cda48b6]118
[486341f]119 string CodeGenerator::mangleName( DeclarationWithType * decl ) {
[13073be]120 // GCC builtins should always be printed unmangled
[42a36d9]121 if ( options.pretty || decl->linkage.is_gcc_builtin ) return decl->name;
[16ba4a6f]122 if ( LinkageSpec::isMangled(decl->linkage) && decl->mangleName != "" ) {
[f326f99]123 // need to incorporate scope level in order to differentiate names for destructors
124 return decl->get_scopedMangleName();
[51587aa]125 } else {
[13073be]126 return decl->name;
[51587aa]127 } // if
128 }
[94b4364]129
[44a81853]130 void CodeGenerator::genAttributes( list< Attribute * > & attributes ) {
[60a8062]131 if ( attributes.empty() ) return;
[44a81853]132 output << "__attribute__ ((";
133 for ( list< Attribute * >::iterator attr( attributes.begin() );; ) {
[85b2300]134 output << (*attr)->name;
135 if ( ! (*attr)->parameters.empty() ) {
[44a81853]136 output << "(";
[85b2300]137 genCommaList( (*attr)->parameters.begin(), (*attr)->parameters.end() );
[44a81853]138 output << ")";
139 } // if
[60a8062]140 if ( ++attr == attributes.end() ) break;
[44a81853]141 output << ","; // separator
142 } // for
143 output << ")) ";
144 } // CodeGenerator::genAttributes
[7baed7d]145
[9857e8d]146 // *** BaseSyntaxNode
[d22e90f]147 void CodeGenerator::previsit( BaseSyntaxNode * node ) {
[9857e8d]148 // turn off automatic recursion for all nodes, to allow each visitor to
149 // precisely control the order in which its children are visited.
150 visit_children = false;
[d22e90f]151 updateLocation( node );
[9857e8d]152 }
153
154 // *** BaseSyntaxNode
155 void CodeGenerator::postvisit( BaseSyntaxNode * node ) {
156 std::stringstream ss;
157 node->print( ss );
158 assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() );
159 }
[7baed7d]160
[5f08961d]161 // *** Expression
162 void CodeGenerator::previsit( Expression * node ) {
163 previsit( (BaseSyntaxNode *)node );
164 GuardAction( [this, node](){
[60a8062]165 if ( options.printExprTypes && node->result ) {
166 output << " /* " << genType( node->result, "", options ) << " */ ";
167 }
168 } );
[5f08961d]169 }
170
[4810867]171 // *** Declarations
[9857e8d]172 void CodeGenerator::postvisit( FunctionDecl * functionDecl ) {
[3ed994e]173 // deleted decls should never be used, so don't print them
[42a36d9]174 if ( functionDecl->isDeleted && options.genC ) return;
[8e9cbb2]175 extension( functionDecl );
[7baed7d]176 genAttributes( functionDecl->get_attributes() );
177
[51587aa]178 handleStorageClass( functionDecl );
[6e8bd43]179 functionDecl->get_funcSpec().print( output );
[dd020c0]180
[da09ba1]181 Options subOptions = options;
[76f7fc7]182 subOptions.anonymousUnused = functionDecl->has_body();
[da09ba1]183 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), subOptions );
[51587aa]184
[58dd019]185 asmName( functionDecl );
186
[51587aa]187 if ( functionDecl->get_statements() ) {
[9857e8d]188 functionDecl->get_statements()->accept( *visitor );
[51587aa]189 } // if
[3ed994e]190 if ( functionDecl->isDeleted ) {
191 output << " = void";
192 }
[51587aa]193 }
194
[9857e8d]195 void CodeGenerator::postvisit( ObjectDecl * objectDecl ) {
[3ed994e]196 // deleted decls should never be used, so don't print them
[42a36d9]197 if ( objectDecl->isDeleted && options.genC ) return;
[de8d7fb1]198
199 // gcc allows an empty declarator (no name) for bit-fields and C states: 6.7.2.1 Structure and union specifiers,
200 // point 4, page 113: If the (bit field) value is zero, the declaration shall have no declarator. For anything
201 // else, the anonymous name refers to the anonymous object for plan9 inheritance.
202 if ( objectDecl->get_name().empty() && options.genC && ! objectDecl->get_bitfieldWidth() ) {
[e39241b]203 // only generate an anonymous name when generating C code, otherwise it clutters the output too much
[d9c8a59]204 static UniqueName name = { "__anonymous_object" };
205 objectDecl->set_name( name.newName() );
[de8d7fb1]206 // Stops unused parameter warnings.
207 if ( options.anonymousUnused ) {
208 objectDecl->attributes.push_back( new Attribute( "unused" ) );
209 }
[d9c8a59]210 }
211
[8e9cbb2]212 extension( objectDecl );
[f9cebb5]213 genAttributes( objectDecl->get_attributes() );
214
[51587aa]215 handleStorageClass( objectDecl );
[42a36d9]216 output << genType( objectDecl->get_type(), mangleName( objectDecl ), options.pretty, options.genC );
[71f4e4f]217
[58dd019]218 asmName( objectDecl );
219
[51587aa]220 if ( objectDecl->get_init() ) {
[6c4ff37]221 output << " = ";
[9857e8d]222 objectDecl->get_init()->accept( *visitor );
[51587aa]223 } // if
[3ed994e]224 if ( objectDecl->isDeleted ) {
225 output << " = void";
226 }
[3778cb2]227
[51587aa]228 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]229 output << ":";
[9857e8d]230 objectDecl->get_bitfieldWidth()->accept( *visitor );
[51587aa]231 } // if
232 }
233
[5f642e38]234 void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) {
[42a36d9]235 if( ! aggDecl->parameters.empty() && ! options.genC ) {
[e39241b]236 // assertf( ! genC, "Aggregate type parameters should not reach code generation." );
237 output << "forall(";
[0b3b2ae]238 genCommaList( aggDecl->parameters.begin(), aggDecl->parameters.end() );
[e39241b]239 output << ")" << endl;
[e6cee92]240 output << indent;
[e39241b]241 }
242
[593370c]243 output << kind;
[0b3b2ae]244 genAttributes( aggDecl->attributes );
245 output << aggDecl->name;
[71f4e4f]246
[2c57025]247 if ( aggDecl->has_body() ) {
[0b3b2ae]248 std::list< Declaration * > & memb = aggDecl->members;
[94b4364]249 output << " {" << endl;
[51587aa]250
[f7cb0bc]251 ++indent;
[3778cb2]252 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) {
[87e08e24]253 output << indent;
[9857e8d]254 (*i)->accept( *visitor );
[6c4ff37]255 output << ";" << endl;
[3778cb2]256 } // for
[51587aa]257
[f7cb0bc]258 --indent;
[51587aa]259
[cda48b6]260 output << indent << "}";
[17cd4eb]261 } // if
[51587aa]262 }
[17cd4eb]263
[9857e8d]264 void CodeGenerator::postvisit( StructDecl * structDecl ) {
[8e9cbb2]265 extension( structDecl );
[5f642e38]266 handleAggregate( structDecl, "struct " );
[51587aa]267 }
[17cd4eb]268
[9857e8d]269 void CodeGenerator::postvisit( UnionDecl * unionDecl ) {
[8e9cbb2]270 extension( unionDecl );
[5f642e38]271 handleAggregate( unionDecl, "union " );
[51587aa]272 }
[71f4e4f]273
[9857e8d]274 void CodeGenerator::postvisit( EnumDecl * enumDecl ) {
[8e9cbb2]275 extension( enumDecl );
276 std::list< Declaration* > &memb = enumDecl->get_members();
[d8e2a09]277 if (enumDecl->base && ! memb.empty()) {
[4390fb6]278 ObjectDecl * last = nullptr;
[51587aa]279 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[8688ce1]280 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
[51587aa]281 assert( obj );
[4390fb6]282 output << "static const ";
283 output << genType(enumDecl->base, "", options) << " ";
284 output << mangleName( obj ) << " ";
285 output << " = ";
286 output << "(" << genType(enumDecl->base, "", options) << ")";;
[51587aa]287 if ( obj->get_init() ) {
[9857e8d]288 obj->get_init()->accept( *visitor );
[4390fb6]289 } else {
290 if (last == nullptr) {
291 output << 0;
292 } else {
293 output << mangleName(last) << " + 1";
294 }
295 } // if—
296 output << ";" << endl;
297 last = obj;
[51587aa]298 } // for
[4390fb6]299 } else {
300 output << "enum ";
301 genAttributes( enumDecl->get_attributes() );
302
303 output << enumDecl->get_name();
304
305 if ( ! memb.empty() ) {
306 output << " {" << endl;
307
308 ++indent;
309 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
310 ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i );
311 assert( obj );
312 output << indent << mangleName( obj );
313 if ( obj->get_init() ) {
314 output << " = ";
315 obj->get_init()->accept( *visitor );
316 } // if
317 output << "," << endl;
318 } // for
[f7cb0bc]319 --indent;
[cda48b6]320 output << indent << "}";
[4390fb6]321 } // if
[51587aa]322 } // if
323 }
[71f4e4f]324
[9857e8d]325 void CodeGenerator::postvisit( TraitDecl * traitDecl ) {
[42a36d9]326 assertf( ! options.genC, "TraitDecls should not reach code generation." );
[a984e65]327 extension( traitDecl );
328 handleAggregate( traitDecl, "trait " );
329 }
[71f4e4f]330
[9857e8d]331 void CodeGenerator::postvisit( TypedefDecl * typeDecl ) {
[42a36d9]332 assertf( ! options.genC, "Typedefs are removed and substituted in earlier passes." );
[e39241b]333 output << "typedef ";
[42a36d9]334 output << genType( typeDecl->get_base(), typeDecl->get_name(), options ) << endl;
[51587aa]335 }
[71f4e4f]336
[9857e8d]337 void CodeGenerator::postvisit( TypeDecl * typeDecl ) {
[42a36d9]338 assertf( ! options.genC, "TypeDecls should not reach code generation." );
[ab4bff5]339 output << typeDecl->genTypeString() << " " << typeDecl->name;
[f0ecf9b]340 if ( typeDecl->sized ) {
[ab4bff5]341 output << " | sized(" << typeDecl->name << ")";
[a0c7dc36]342 }
[ab4bff5]343 if ( ! typeDecl->assertions.empty() ) {
[a0c7dc36]344 output << " | { ";
[ab4bff5]345 for ( DeclarationWithType * assert : typeDecl->assertions ) {
346 assert->accept( *visitor );
347 output << "; ";
348 }
[a0c7dc36]349 output << " }";
[e39241b]350 }
[51587aa]351 }
352
[92fea32]353 void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) {
354 output << "_Static_assert(";
355 assertDecl->condition->accept( *visitor );
356 output << ", ";
357 assertDecl->message->accept( *visitor );
358 output << ")";
359 }
360
[9857e8d]361 void CodeGenerator::postvisit( Designation * designation ) {
[e4d829b]362 std::list< Expression * > designators = designation->get_designators();
[e45215c]363 if ( designators.size() == 0 ) return;
[e4d829b]364 for ( Expression * des : designators ) {
[62423350]365 if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) {
366 // if expression is a NameExpr or VariableExpr, then initializing aggregate member
367 output << ".";
[9857e8d]368 des->accept( *visitor );
[e4d829b]369 } else {
[3e54399]370 // otherwise, it has to be a ConstantExpr or CastExpr, initializing array element
[62423350]371 output << "[";
[9857e8d]372 des->accept( *visitor );
[62423350]373 output << "]";
[3778cb2]374 } // if
375 } // for
[3eb1653]376 output << " = ";
[e45215c]377 }
378
[9857e8d]379 void CodeGenerator::postvisit( SingleInit * init ) {
380 init->get_value()->accept( *visitor );
[51587aa]381 }
382
[9857e8d]383 void CodeGenerator::postvisit( ListInit * init ) {
[e4d829b]384 auto initBegin = init->begin();
385 auto initEnd = init->end();
386 auto desigBegin = init->get_designations().begin();
387 auto desigEnd = init->get_designations().end();
388
[6c4ff37]389 output << "{ ";
[e4d829b]390 for ( ; initBegin != initEnd && desigBegin != desigEnd; ) {
[9857e8d]391 (*desigBegin)->accept( *visitor );
392 (*initBegin)->accept( *visitor );
[e4d829b]393 ++initBegin, ++desigBegin;
394 if ( initBegin != initEnd ) {
395 output << ", ";
396 }
397 }
[6c4ff37]398 output << " }";
[e4d829b]399 assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() );
[51587aa]400 }
401
[d22e90f]402 void CodeGenerator::postvisit( ConstructorInit * init ){
[42a36d9]403 assertf( ! options.genC, "ConstructorInit nodes should not reach code generation." );
[e6cee92]404 // pseudo-output for constructor/destructor pairs
[d22e90f]405 output << "<ctorinit>{" << endl << ++indent << "ctor: ";
[9857e8d]406 maybeAccept( init->get_ctor(), *visitor );
[d22e90f]407 output << ", " << endl << indent << "dtor: ";
[9857e8d]408 maybeAccept( init->get_dtor(), *visitor );
[d22e90f]409 output << endl << --indent << "}";
[fc638d2]410 }
411
[9857e8d]412 void CodeGenerator::postvisit( Constant * constant ) {
[d7312ac]413 output << constant->get_value();
[51587aa]414 }
415
[4810867]416 // *** Expressions
[9857e8d]417 void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) {
[e04ef3a]418 extension( applicationExpr );
[8688ce1]419 if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
[60a8062]420 const OperatorInfo * opInfo;
421 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && ( opInfo = operatorLookup( varExpr->get_var()->get_name() ) ) ) {
[51587aa]422 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
[60a8062]423 switch ( opInfo->type ) {
[51587aa]424 case OT_INDEX:
425 assert( applicationExpr->get_args().size() == 2 );
[9857e8d]426 (*arg++)->accept( *visitor );
[6c4ff37]427 output << "[";
[9857e8d]428 (*arg)->accept( *visitor );
[6c4ff37]429 output << "]";
[51587aa]430 break;
[71f4e4f]431
[51587aa]432 case OT_CALL:
[356189a]433 // there are no intrinsic definitions of the function call operator
[51587aa]434 assert( false );
435 break;
[71f4e4f]436
[f1e012b]437 case OT_CTOR:
[c2ce2350]438 case OT_DTOR:
[356189a]439 if ( applicationExpr->get_args().size() == 1 ) {
[8e9cbb2]440 // the expression fed into a single parameter constructor or destructor may contain side
441 // effects, so must still output this expression
[64071c2]442 output << "(";
[9857e8d]443 (*arg++)->accept( *visitor );
[60a8062]444 output << ") /* " << opInfo->inputName << " */";
[356189a]445 } else if ( applicationExpr->get_args().size() == 2 ) {
[c2ce2350]446 // intrinsic two parameter constructors are essentially bitwise assignment
[356189a]447 output << "(";
[9857e8d]448 (*arg++)->accept( *visitor );
[60a8062]449 output << opInfo->symbol;
[9857e8d]450 (*arg)->accept( *visitor );
[60a8062]451 output << ") /* " << opInfo->inputName << " */";
[356189a]452 } else {
[c2ce2350]453 // no constructors with 0 or more than 2 parameters
[356189a]454 assert( false );
[8688ce1]455 } // if
[356189a]456 break;
[f1e012b]457
[51587aa]458 case OT_PREFIX:
459 case OT_PREFIXASSIGN:
460 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]461 output << "(";
[60a8062]462 output << opInfo->symbol;
[9857e8d]463 (*arg)->accept( *visitor );
[6c4ff37]464 output << ")";
[51587aa]465 break;
[71f4e4f]466
[51587aa]467 case OT_POSTFIX:
468 case OT_POSTFIXASSIGN:
469 assert( applicationExpr->get_args().size() == 1 );
[9857e8d]470 (*arg)->accept( *visitor );
[60a8062]471 output << opInfo->symbol;
[51587aa]472 break;
473
[f1e012b]474
[51587aa]475 case OT_INFIX:
476 case OT_INFIXASSIGN:
477 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]478 output << "(";
[9857e8d]479 (*arg++)->accept( *visitor );
[60a8062]480 output << opInfo->symbol;
[9857e8d]481 (*arg)->accept( *visitor );
[6c4ff37]482 output << ")";
[51587aa]483 break;
[71f4e4f]484
[51587aa]485 case OT_CONSTANT:
[721f17a]486 case OT_LABELADDRESS:
487 // there are no intrinsic definitions of 0/1 or label addresses as functions
[51587aa]488 assert( false );
[3778cb2]489 } // switch
[17cd4eb]490 } else {
[9857e8d]491 varExpr->accept( *visitor );
[6c4ff37]492 output << "(";
[51587aa]493 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]494 output << ")";
[17cd4eb]495 } // if
[51587aa]496 } else {
[9857e8d]497 applicationExpr->get_function()->accept( *visitor );
[6c4ff37]498 output << "(";
[51587aa]499 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]500 output << ")";
[51587aa]501 } // if
502 }
[71f4e4f]503
[9857e8d]504 void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) {
[e04ef3a]505 extension( untypedExpr );
[22bc276]506 if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) {
[60a8062]507 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
508 if ( opInfo ) {
[22bc276]509 std::list< Expression* >::iterator arg = untypedExpr->args.begin();
[60a8062]510 switch ( opInfo->type ) {
[51587aa]511 case OT_INDEX:
[22bc276]512 assert( untypedExpr->args.size() == 2 );
[9857e8d]513 (*arg++)->accept( *visitor );
[6c4ff37]514 output << "[";
[9857e8d]515 (*arg)->accept( *visitor );
[6c4ff37]516 output << "]";
[51587aa]517 break;
[71f4e4f]518
[51587aa]519 case OT_CALL:
[f1e012b]520 assert( false );
521
[c2ce2350]522 case OT_CTOR:
523 case OT_DTOR:
[22bc276]524 if ( untypedExpr->args.size() == 1 ) {
[8e9cbb2]525 // the expression fed into a single parameter constructor or destructor may contain side
526 // effects, so must still output this expression
[64071c2]527 output << "(";
[9857e8d]528 (*arg++)->accept( *visitor );
[60a8062]529 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]530 } else if ( untypedExpr->get_args().size() == 2 ) {
531 // intrinsic two parameter constructors are essentially bitwise assignment
532 output << "(";
[9857e8d]533 (*arg++)->accept( *visitor );
[60a8062]534 output << opInfo->symbol;
[9857e8d]535 (*arg)->accept( *visitor );
[60a8062]536 output << ") /* " << opInfo->inputName << " */";
[c2ce2350]537 } else {
538 // no constructors with 0 or more than 2 parameters
[42a36d9]539 assertf( ! options.genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." );
[4e8949f]540 output << "(";
541 (*arg++)->accept( *visitor );
[60a8062]542 output << opInfo->symbol << "{ ";
[22bc276]543 genCommaList( arg, untypedExpr->args.end() );
[60a8062]544 output << "}) /* " << opInfo->inputName << " */";
[3778cb2]545 } // if
[51587aa]546 break;
[71f4e4f]547
[51587aa]548 case OT_PREFIX:
549 case OT_PREFIXASSIGN:
[de62360d]550 case OT_LABELADDRESS:
[22bc276]551 assert( untypedExpr->args.size() == 1 );
[6c4ff37]552 output << "(";
[60a8062]553 output << opInfo->symbol;
[9857e8d]554 (*arg)->accept( *visitor );
[6c4ff37]555 output << ")";
[51587aa]556 break;
[71f4e4f]557
[51587aa]558 case OT_POSTFIX:
559 case OT_POSTFIXASSIGN:
[22bc276]560 assert( untypedExpr->args.size() == 1 );
[9857e8d]561 (*arg)->accept( *visitor );
[60a8062]562 output << opInfo->symbol;
[51587aa]563 break;
[71f4e4f]564
[51587aa]565 case OT_INFIX:
566 case OT_INFIXASSIGN:
[22bc276]567 assert( untypedExpr->args.size() == 2 );
[6c4ff37]568 output << "(";
[9857e8d]569 (*arg++)->accept( *visitor );
[60a8062]570 output << opInfo->symbol;
[9857e8d]571 (*arg)->accept( *visitor );
[6c4ff37]572 output << ")";
[51587aa]573 break;
[71f4e4f]574
[51587aa]575 case OT_CONSTANT:
576 // there are no intrinsic definitions of 0 or 1 as functions
577 assert( false );
[3778cb2]578 } // switch
[51587aa]579 } else {
[22bc276]580 // builtin routines
581 nameExpr->accept( *visitor );
582 output << "(";
583 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
584 output << ")";
[51587aa]585 } // if
586 } else {
[22bc276]587 untypedExpr->function->accept( *visitor );
[6c4ff37]588 output << "(";
[22bc276]589 genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() );
[6c4ff37]590 output << ")";
[51587aa]591 } // if
592 }
[71f4e4f]593
[9857e8d]594 void CodeGenerator::postvisit( RangeExpr * rangeExpr ) {
[22bc276]595 rangeExpr->low->accept( *visitor );
[064e3ff]596 output << " ... ";
[22bc276]597 rangeExpr->high->accept( *visitor );
[064e3ff]598 }
599
[9857e8d]600 void CodeGenerator::postvisit( NameExpr * nameExpr ) {
[e04ef3a]601 extension( nameExpr );
[60a8062]602 const OperatorInfo * opInfo = operatorLookup( nameExpr->name );
603 if ( opInfo ) {
604 if ( opInfo->type == OT_CONSTANT ) {
605 output << opInfo->symbol;
[5ea7a22]606 } else {
[60a8062]607 output << opInfo->outputName;
[5ea7a22]608 }
[51587aa]609 } else {
[6c4ff37]610 output << nameExpr->get_name();
[51587aa]611 } // if
612 }
[71f4e4f]613
[6e50a6b]614 void CodeGenerator::postvisit( DimensionExpr * dimensionExpr ) {
615 extension( dimensionExpr );
616 output << "/*non-type*/" << dimensionExpr->get_name();
617 }
618
[9857e8d]619 void CodeGenerator::postvisit( AddressExpr * addressExpr ) {
[e04ef3a]620 extension( addressExpr );
[6c4ff37]621 output << "(&";
[9857e8d]622 addressExpr->arg->accept( *visitor );
[6c4ff37]623 output << ")";
[51587aa]624 }
625
[9857e8d]626 void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) {
[5809461]627 extension( addressExpr );
628 output << "(&&" << addressExpr->arg << ")";
629 }
630
[9857e8d]631 void CodeGenerator::postvisit( CastExpr * castExpr ) {
[e04ef3a]632 extension( castExpr );
[803deb1]633 output << "(";
[906e24d]634 if ( castExpr->get_result()->isVoid() ) {
[d7312ac]635 output << "(void)";
[d104b02]636 } else {
637 // at least one result type of cast.
638 // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write
639 // an lvalue cast, this has been taken out.
[803deb1]640 output << "(";
[42a36d9]641 output << genType( castExpr->get_result(), "", options );
[71f4e4f]642 output << ")";
[3778cb2]643 } // if
[da9d79b]644 castExpr->arg->accept( *visitor );
645 output << ")";
646 }
647
648 void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) {
[42a36d9]649 assertf( ! options.genC, "KeywordCast should not reach code generation." );
[da9d79b]650 extension( castExpr );
651 output << "((" << castExpr->targetString() << " &)";
652 castExpr->arg->accept( *visitor );
[803deb1]653 output << ")";
[51587aa]654 }
[71f4e4f]655
[9857e8d]656 void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) {
[42a36d9]657 assertf( ! options.genC, "VirtualCastExpr should not reach code generation." );
[a5f0529]658 extension( castExpr );
659 output << "(virtual ";
[9857e8d]660 castExpr->get_arg()->accept( *visitor );
[a5f0529]661 output << ")";
662 }
663
[9857e8d]664 void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) {
[42a36d9]665 assertf( ! options.genC, "UntypedMemberExpr should not reach code generation." );
[e39241b]666 extension( memberExpr );
[9857e8d]667 memberExpr->get_aggregate()->accept( *visitor );
[5f642e38]668 output << ".";
[9857e8d]669 memberExpr->get_member()->accept( *visitor );
[51587aa]670 }
[71f4e4f]671
[9857e8d]672 void CodeGenerator::postvisit( MemberExpr * memberExpr ) {
[e04ef3a]673 extension( memberExpr );
[9857e8d]674 memberExpr->get_aggregate()->accept( *visitor );
[6c4ff37]675 output << "." << mangleName( memberExpr->get_member() );
[51587aa]676 }
[71f4e4f]677
[9857e8d]678 void CodeGenerator::postvisit( VariableExpr * variableExpr ) {
[e04ef3a]679 extension( variableExpr );
[60a8062]680 const OperatorInfo * opInfo;
681 if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && (opInfo = operatorLookup( variableExpr->get_var()->get_name() )) && opInfo->type == OT_CONSTANT ) {
682 output << opInfo->symbol;
[51587aa]683 } else {
[4390fb6]684 // if (dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())
685 // && dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base) {
686 // output << '(' <<genType(dynamic_cast<EnumInstType *>(variableExpr->get_var()->get_type())->baseEnum->base, "", options) << ')';
687 // }
[6c4ff37]688 output << mangleName( variableExpr->get_var() );
[51587aa]689 } // if
690 }
[71f4e4f]691
[9857e8d]692 void CodeGenerator::postvisit( ConstantExpr * constantExpr ) {
[51587aa]693 assert( constantExpr->get_constant() );
[e04ef3a]694 extension( constantExpr );
[9857e8d]695 constantExpr->get_constant()->accept( *visitor );
[51587aa]696 }
[71f4e4f]697
[9857e8d]698 void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) {
[e04ef3a]699 extension( sizeofExpr );
[6c4ff37]700 output << "sizeof(";
[51587aa]701 if ( sizeofExpr->get_isType() ) {
[42a36d9]702 output << genType( sizeofExpr->get_type(), "", options );
[51587aa]703 } else {
[9857e8d]704 sizeofExpr->get_expr()->accept( *visitor );
[51587aa]705 } // if
[6c4ff37]706 output << ")";
[51587aa]707 }
[47534159]708
[9857e8d]709 void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) {
[47534159]710 // use GCC extension to avoid bumping std to C11
[8e9cbb2]711 extension( alignofExpr );
[47534159]712 output << "__alignof__(";
[25a054f]713 if ( alignofExpr->get_isType() ) {
[42a36d9]714 output << genType( alignofExpr->get_type(), "", options );
[47534159]715 } else {
[9857e8d]716 alignofExpr->get_expr()->accept( *visitor );
[47534159]717 } // if
718 output << ")";
719 }
[71f4e4f]720
[9857e8d]721 void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) {
[42a36d9]722 assertf( ! options.genC, "UntypedOffsetofExpr should not reach code generation." );
[e39241b]723 output << "offsetof(";
[42a36d9]724 output << genType( offsetofExpr->get_type(), "", options );
[e39241b]725 output << ", " << offsetofExpr->get_member();
726 output << ")";
[2a4b088]727 }
728
[9857e8d]729 void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) {
[25a054f]730 // use GCC builtin
731 output << "__builtin_offsetof(";
[42a36d9]732 output << genType( offsetofExpr->get_type(), "", options );
[e551c69]733 output << ", " << mangleName( offsetofExpr->get_member() );
[25a054f]734 output << ")";
735 }
[d63eeb0]736
[9857e8d]737 void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) {
[42a36d9]738 assertf( ! options.genC, "OffsetPackExpr should not reach code generation." );
739 output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", options ) << ")";
[afc1045]740 }
[70a06f6]741
[9857e8d]742 void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) {
[e04ef3a]743 extension( logicalExpr );
[6c4ff37]744 output << "(";
[9857e8d]745 logicalExpr->get_arg1()->accept( *visitor );
[51587aa]746 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]747 output << " && ";
[51587aa]748 } else {
[6c4ff37]749 output << " || ";
[51587aa]750 } // if
[9857e8d]751 logicalExpr->get_arg2()->accept( *visitor );
[6c4ff37]752 output << ")";
[51587aa]753 }
[71f4e4f]754
[9857e8d]755 void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) {
[e04ef3a]756 extension( conditionalExpr );
[6c4ff37]757 output << "(";
[9857e8d]758 conditionalExpr->get_arg1()->accept( *visitor );
[6c4ff37]759 output << " ? ";
[9857e8d]760 conditionalExpr->get_arg2()->accept( *visitor );
[6c4ff37]761 output << " : ";
[9857e8d]762 conditionalExpr->get_arg3()->accept( *visitor );
[6c4ff37]763 output << ")";
[51587aa]764 }
[71f4e4f]765
[9857e8d]766 void CodeGenerator::postvisit( CommaExpr * commaExpr ) {
[e04ef3a]767 extension( commaExpr );
[6c4ff37]768 output << "(";
[42a36d9]769 if ( options.genC ) {
[8a6cf7e]770 // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings.
771 commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) );
772 }
[9857e8d]773 commaExpr->get_arg1()->accept( *visitor );
[6c4ff37]774 output << " , ";
[9857e8d]775 commaExpr->get_arg2()->accept( *visitor );
[6c4ff37]776 output << ")";
[51587aa]777 }
[71f4e4f]778
[9857e8d]779 void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) {
[42a36d9]780 assertf( ! options.genC, "TupleAssignExpr should not reach code generation." );
[9857e8d]781 tupleExpr->stmtExpr->accept( *visitor );
[d104b02]782 }
783
[9857e8d]784 void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) {
[42a36d9]785 assertf( ! options.genC, "UntypedTupleExpr should not reach code generation." );
[f975c65]786 extension( tupleExpr );
[e39241b]787 output << "[";
788 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
789 output << "]";
790 }
[907eccb]791
[9857e8d]792 void CodeGenerator::postvisit( TupleExpr * tupleExpr ) {
[42a36d9]793 assertf( ! options.genC, "TupleExpr should not reach code generation." );
[f975c65]794 extension( tupleExpr );
[e39241b]795 output << "[";
796 genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() );
797 output << "]";
798 }
[71f4e4f]799
[9857e8d]800 void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) {
[42a36d9]801 assertf( ! options.genC, "TupleIndexExpr should not reach code generation." );
[f975c65]802 extension( tupleExpr );
[9857e8d]803 tupleExpr->get_tuple()->accept( *visitor );
[f975c65]804 output << "." << tupleExpr->get_index();
805 }
806
[9857e8d]807 void CodeGenerator::postvisit( TypeExpr * typeExpr ) {
[42a36d9]808 // if ( options.genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl;
809 // assertf( ! options.genC, "TypeExpr should not reach code generation." );
810 if ( ! options.genC ) {
811 output << genType( typeExpr->get_type(), "", options );
[e4d829b]812 }
[e39241b]813 }
[2b6c1e0]814
[9857e8d]815 void CodeGenerator::postvisit( AsmExpr * asmExpr ) {
[665f432]816 if ( !asmExpr->inout.empty() ) {
[7f5566b]817 output << "[ ";
[665f432]818 output << asmExpr->inout;
[7f5566b]819 output << " ] ";
820 } // if
[665f432]821 asmExpr->constraint->accept( *visitor );
[7f5566b]822 output << " ( ";
[665f432]823 asmExpr->operand->accept( *visitor );
[7f5566b]824 output << " )";
825 }
826
[9857e8d]827 void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) {
[fbcde64]828 assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) );
[42a36d9]829 output << "(" << genType( compLitExpr->get_result(), "", options ) << ")";
[9857e8d]830 compLitExpr->get_initializer()->accept( *visitor );
[3c13c03]831 }
832
[9857e8d]833 void CodeGenerator::postvisit( UniqueExpr * unqExpr ) {
[42a36d9]834 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[d104b02]835 output << "unq<" << unqExpr->get_id() << ">{ ";
[9857e8d]836 unqExpr->get_expr()->accept( *visitor );
[d104b02]837 output << " }";
838 }
839
[9857e8d]840 void CodeGenerator::postvisit( StmtExpr * stmtExpr ) {
[44b4114]841 std::list< Statement * > & stmts = stmtExpr->statements->kids;
[d22e90f]842 output << "({" << endl;
[f7cb0bc]843 ++indent;
[3c13c03]844 unsigned int numStmts = stmts.size();
845 unsigned int i = 0;
846 for ( Statement * stmt : stmts ) {
[058f549]847 output << indent << printLabels( stmt->get_labels() );
[3c13c03]848 if ( i+1 == numStmts ) {
849 // last statement in a statement expression needs to be handled specially -
850 // cannot cast to void, otherwise the expression statement has no value
851 if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) {
[44b4114]852 exprStmt->expr->accept( *visitor );
[3c13c03]853 output << ";" << endl;
854 ++i;
855 break;
856 }
857 }
[9857e8d]858 stmt->accept( *visitor );
[3c13c03]859 output << endl;
860 if ( wantSpacing( stmt ) ) {
861 output << endl;
862 } // if
863 ++i;
864 }
[f7cb0bc]865 --indent;
[3c13c03]866 output << indent << "})";
[6eb8948]867 }
868
[4e8949f]869 void CodeGenerator::postvisit( ConstructorExpr * expr ) {
[42a36d9]870 assertf( ! options.genC, "Unique expressions should not reach code generation." );
[4e8949f]871 expr->callExpr->accept( *visitor );
872 }
873
[44b4114]874 void CodeGenerator::postvisit( DeletedExpr * expr ) {
[42a36d9]875 assertf( ! options.genC, "Deleted expressions should not reach code generation." );
[44b4114]876 expr->expr->accept( *visitor );
877 }
878
[0f79853]879 void CodeGenerator::postvisit( DefaultArgExpr * arg ) {
[42a36d9]880 assertf( ! options.genC, "Default argument expressions should not reach code generation." );
[0f79853]881 arg->expr->accept( *visitor );
882 }
883
[d807ca28]884 void CodeGenerator::postvisit( GenericExpr * expr ) {
[42a36d9]885 assertf( ! options.genC, "C11 _Generic expressions should not reach code generation." );
[d807ca28]886 output << "_Generic(";
887 expr->control->accept( *visitor );
888 output << ", ";
889 unsigned int numAssocs = expr->associations.size();
890 unsigned int i = 0;
891 for ( GenericExpr::Association & assoc : expr->associations ) {
892 if (assoc.isDefault) {
893 output << "default: ";
894 } else {
[42a36d9]895 output << genType( assoc.type, "", options ) << ": ";
[d807ca28]896 }
897 assoc.expr->accept( *visitor );
898 if ( i+1 != numAssocs ) {
899 output << ", ";
900 }
901 i++;
902 }
903 output << ")";
904 }
905
906
[4810867]907 // *** Statements
[9857e8d]908 void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) {
[51587aa]909 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]910 output << "{" << endl;
[51587aa]911
[f7cb0bc]912 ++indent;
[51587aa]913
[7f5566b]914 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) {
[cda48b6]915 output << indent << printLabels( (*i)->get_labels() );
[9857e8d]916 (*i)->accept( *visitor );
[2b6c1e0]917
[6c4ff37]918 output << endl;
[2b6c1e0]919 if ( wantSpacing( *i ) ) {
920 output << endl;
[3778cb2]921 } // if
[8688ce1]922 } // for
[f7cb0bc]923 --indent;
[51587aa]924
[cda48b6]925 output << indent << "}";
[51587aa]926 }
927
[9857e8d]928 void CodeGenerator::postvisit( ExprStmt * exprStmt ) {
[6c4ff37]929 assert( exprStmt );
[42a36d9]930 if ( options.genC ) {
[262f085f]931 // cast the top-level expression to void to reduce gcc warnings.
[8a6cf7e]932 exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) );
[262f085f]933 }
[9857e8d]934 exprStmt->get_expr()->accept( *visitor );
[3eb1653]935 output << ";";
[51587aa]936 }
937
[9857e8d]938 void CodeGenerator::postvisit( AsmStmt * asmStmt ) {
[7f5566b]939 output << "asm ";
940 if ( asmStmt->get_voltile() ) output << "volatile ";
941 if ( ! asmStmt->get_gotolabels().empty() ) output << "goto ";
942 output << "( ";
[9857e8d]943 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[7f5566b]944 output << " : ";
945 genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() );
946 output << " : ";
947 genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() );
948 output << " : ";
949 genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() );
950 if ( ! asmStmt->get_gotolabels().empty() ) {
951 output << " : ";
952 for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) {
953 output << *begin++;
954 if ( begin == asmStmt->get_gotolabels().end() ) break;
955 output << ", ";
956 } // for
957 } // if
[d7312ac]958 output << " );";
[7f5566b]959 }
960
[9857e8d]961 void CodeGenerator::postvisit( AsmDecl * asmDecl ) {
[e994912]962 output << "asm ";
963 AsmStmt * asmStmt = asmDecl->get_stmt();
964 output << "( ";
[9857e8d]965 if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor );
[d7312ac]966 output << " )";
[e994912]967 }
968
[2d019af]969 void CodeGenerator::postvisit( DirectiveDecl * directiveDecl ) {
970 output << endl << directiveDecl->get_stmt()->directive; // endl prevents spaces before directive
971 }
972
[cc32d83]973 void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) {
[d7312ac]974 output << endl << dirStmt->directive; // endl prevents spaces before directive
[cc32d83]975 }
976
[9857e8d]977 void CodeGenerator::postvisit( IfStmt * ifStmt ) {
[7f5566b]978 output << "if ( ";
[9857e8d]979 ifStmt->get_condition()->accept( *visitor );
[7f5566b]980 output << " ) ";
[51587aa]981
[3b0bc16]982 ifStmt->get_then()->accept( *visitor );
[51587aa]983
[3b0bc16]984 if ( ifStmt->get_else() != 0) {
[2b6c1e0]985 output << " else ";
[3b0bc16]986 ifStmt->get_else()->accept( *visitor );
[51587aa]987 } // if
988 }
989
[9857e8d]990 void CodeGenerator::postvisit( SwitchStmt * switchStmt ) {
[d7312ac]991 output << "switch ( ";
[9857e8d]992 switchStmt->get_condition()->accept( *visitor );
[7f5566b]993 output << " ) ";
[71f4e4f]994
[d22e90f]995 output << "{" << endl;
[f7cb0bc]996 ++indent;
[9857e8d]997 acceptAll( switchStmt->get_statements(), *visitor );
[f7cb0bc]998 --indent;
[cda48b6]999 output << indent << "}";
[51587aa]1000 }
1001
[9857e8d]1002 void CodeGenerator::postvisit( CaseStmt * caseStmt ) {
[8bafacc]1003 updateLocation( caseStmt );
[1dcd9554]1004 output << indent;
[eb3261f]1005 if ( caseStmt->isDefault()) {
[2b6c1e0]1006 output << "default";
[eb3261f]1007 } else {
[2b6c1e0]1008 output << "case ";
[9857e8d]1009 caseStmt->get_condition()->accept( *visitor );
[17cd4eb]1010 } // if
[d22e90f]1011 output << ":" << endl;
[71f4e4f]1012
[51587aa]1013 std::list<Statement *> sts = caseStmt->get_statements();
1014
[f7cb0bc]1015 ++indent;
[51587aa]1016 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[d7312ac]1017 output << indent << printLabels( (*i)->get_labels() ) ;
[9857e8d]1018 (*i)->accept( *visitor );
[6c4ff37]1019 output << endl;
[3778cb2]1020 } // for
[f7cb0bc]1021 --indent;
[51587aa]1022 }
1023
[9857e8d]1024 void CodeGenerator::postvisit( BranchStmt * branchStmt ) {
[51587aa]1025 switch ( branchStmt->get_type()) {
1026 case BranchStmt::Goto:
1027 if ( ! branchStmt->get_target().empty() )
[6c4ff37]1028 output << "goto " << branchStmt->get_target();
[71f4e4f]1029 else {
[51587aa]1030 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]1031 output << "goto *";
[9857e8d]1032 branchStmt->get_computedTarget()->accept( *visitor );
[51587aa]1033 } // if
1034 } // if
1035 break;
1036 case BranchStmt::Break:
[6c4ff37]1037 output << "break";
[51587aa]1038 break;
1039 case BranchStmt::Continue:
[6c4ff37]1040 output << "continue";
[51587aa]1041 break;
[7c2a7b6]1042 case BranchStmt::FallThrough:
1043 case BranchStmt::FallThroughDefault:
[42a36d9]1044 assertf( ! options.genC, "fallthru should not reach code generation." );
[60a8062]1045 output << "fallthru";
[7c2a7b6]1046 break;
[6180274]1047 default: ; // prevent warning
[3778cb2]1048 } // switch
[7c2a7b6]1049 // print branch target for labelled break/continue/fallthru in debug mode
[42a36d9]1050 if ( ! options.genC && branchStmt->get_type() != BranchStmt::Goto ) {
[7c2a7b6]1051 if ( ! branchStmt->get_target().empty() ) {
1052 output << " " << branchStmt->get_target();
1053 } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) {
1054 output << " default";
1055 }
1056 }
[2b6c1e0]1057 output << ";";
[51587aa]1058 }
1059
[9857e8d]1060 void CodeGenerator::postvisit( ReturnStmt * returnStmt ) {
[6c4ff37]1061 output << "return ";
[9857e8d]1062 maybeAccept( returnStmt->get_expr(), *visitor );
[6c4ff37]1063 output << ";";
[51587aa]1064 }
1065
[9857e8d]1066 void CodeGenerator::postvisit( ThrowStmt * throwStmt ) {
[42a36d9]1067 assertf( ! options.genC, "Throw statements should not reach code generation." );
[daf1af8]1068
1069 output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ?
[60a8062]1070 "throw" : "throwResume");
[daf1af8]1071 if (throwStmt->get_expr()) {
1072 output << " ";
[9857e8d]1073 throwStmt->get_expr()->accept( *visitor );
[daf1af8]1074 }
1075 if (throwStmt->get_target()) {
1076 output << " _At ";
[9857e8d]1077 throwStmt->get_target()->accept( *visitor );
[daf1af8]1078 }
1079 output << ";";
1080 }
[e4ea10b7]1081 void CodeGenerator::postvisit( CatchStmt * stmt ) {
[42a36d9]1082 assertf( ! options.genC, "Catch statements should not reach code generation." );
[e4ea10b7]1083
1084 output << ((stmt->get_kind() == CatchStmt::Terminate) ?
[60a8062]1085 "catch" : "catchResume");
[e4ea10b7]1086 output << "( ";
1087 stmt->decl->accept( *visitor );
1088 output << " ) ";
1089
1090 if( stmt->cond ) {
1091 output << "if/when(?) (";
1092 stmt->cond->accept( *visitor );
1093 output << ") ";
1094 }
1095 stmt->body->accept( *visitor );
1096 }
1097
1098 void CodeGenerator::postvisit( WaitForStmt * stmt ) {
[42a36d9]1099 assertf( ! options.genC, "Waitfor statements should not reach code generation." );
[e4ea10b7]1100
1101 bool first = true;
1102 for( auto & clause : stmt->clauses ) {
1103 if(first) { output << "or "; first = false; }
1104 if( clause.condition ) {
1105 output << "when(";
1106 stmt->timeout.condition->accept( *visitor );
1107 output << ") ";
1108 }
1109 output << "waitfor(";
1110 clause.target.function->accept( *visitor );
1111 for( Expression * expr : clause.target.arguments ) {
1112 output << ",";
1113 expr->accept( *visitor );
1114 }
1115 output << ") ";
1116 clause.statement->accept( *visitor );
1117 }
1118
1119 if( stmt->timeout.statement ) {
1120 output << "or ";
1121 if( stmt->timeout.condition ) {
1122 output << "when(";
1123 stmt->timeout.condition->accept( *visitor );
1124 output << ") ";
1125 }
1126 output << "timeout(";
1127 stmt->timeout.time->accept( *visitor );
1128 output << ") ";
1129 stmt->timeout.statement->accept( *visitor );
1130 }
1131
1132 if( stmt->orelse.statement ) {
1133 output << "or ";
1134 if( stmt->orelse.condition ) {
1135 output << "when(";
1136 stmt->orelse.condition->accept( *visitor );
1137 output << ")";
1138 }
1139 output << "else ";
1140 stmt->orelse.statement->accept( *visitor );
1141 }
1142 }
1143
[55d6e8de]1144 void CodeGenerator::postvisit( WithStmt * with ) {
[42a36d9]1145 if ( ! options.genC ) {
[55d6e8de]1146 output << "with ( ";
1147 genCommaList( with->exprs.begin(), with->exprs.end() );
1148 output << " ) ";
1149 }
1150 with->stmt->accept( *visitor );
1151 }
[daf1af8]1152
[3b0bc16]1153 void CodeGenerator::postvisit( WhileDoStmt * whileDoStmt ) {
1154 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1155 output << "do";
[321a2481]1156 } else {
[d7312ac]1157 output << "while (";
[3b0bc16]1158 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1159 output << ")";
[51587aa]1160 } // if
[2b6c1e0]1161 output << " ";
[51587aa]1162
[3b0bc16]1163 output << CodeGenerator::printLabels( whileDoStmt->get_body()->get_labels() );
1164 whileDoStmt->get_body()->accept( *visitor );
[51587aa]1165
[cda48b6]1166 output << indent;
[51587aa]1167
[3b0bc16]1168 if ( whileDoStmt->get_isDoWhile() ) {
[d7312ac]1169 output << " while (";
[3b0bc16]1170 whileDoStmt->get_condition()->accept( *visitor );
[6c4ff37]1171 output << ");";
[51587aa]1172 } // if
1173 }
1174
[9857e8d]1175 void CodeGenerator::postvisit( ForStmt * forStmt ) {
[8e9cbb2]1176 // initialization is always hoisted, so don't bother doing anything with that
[145f1fc]1177 output << "for (;";
[51587aa]1178
[321a2481]1179 if ( forStmt->get_condition() != 0 ) {
[9857e8d]1180 forStmt->get_condition()->accept( *visitor );
[3778cb2]1181 } // if
[6c4ff37]1182 output << ";";
[51587aa]1183
[321a2481]1184 if ( forStmt->get_increment() != 0 ) {
1185 // cast the top-level expression to void to reduce gcc warnings.
1186 Expression * expr = new CastExpr( forStmt->get_increment() );
[9857e8d]1187 expr->accept( *visitor );
[3778cb2]1188 } // if
[2b6c1e0]1189 output << ") ";
[51587aa]1190
1191 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]1192 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[9857e8d]1193 forStmt->get_body()->accept( *visitor );
[51587aa]1194 } // if
1195 }
1196
[9857e8d]1197 void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) {
[cda48b6]1198 //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() );
[6c4ff37]1199 output << "/* null statement */ ;";
[51587aa]1200 }
1201
[9857e8d]1202 void CodeGenerator::postvisit( DeclStmt * declStmt ) {
1203 declStmt->get_decl()->accept( *visitor );
[71f4e4f]1204
[51587aa]1205 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]1206 output << ";";
[51587aa]1207 } // if
1208 }
1209
[9857e8d]1210 void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) {
[42a36d9]1211 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
[9857e8d]1212 stmt->callStmt->accept( *visitor );
1213 }
1214
[6cebfef]1215 void CodeGenerator::postvisit( MutexStmt * stmt ) {
1216 assertf( ! options.genC, "ImplicitCtorDtorStmts should not reach code generation." );
1217 stmt->stmt->accept( *visitor );
1218 }
1219
[dd020c0]1220 void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) {
[fb04321]1221 if ( decl->get_storageClasses().any() ) {
[6e8bd43]1222 decl->get_storageClasses().print( output );
[a7c90d4]1223 } // if
[dd020c0]1224 } // CodeGenerator::handleStorageClass
[9facf3b]1225
1226 std::string genName( DeclarationWithType * decl ) {
[60a8062]1227 const OperatorInfo * opInfo = operatorLookup( decl->get_name() );
1228 if ( opInfo ) {
1229 return opInfo->outputName;
[9facf3b]1230 } else {
1231 return decl->get_name();
1232 } // if
1233 }
[51b73452]1234} // namespace CodeGen
[51587aa]1235
[50377a4]1236
1237unsigned Indenter::tabsize = 2;
1238
[e149f77]1239std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) {
1240 if ( node ) {
1241 node->print( out );
1242 } else {
1243 out << "nullptr";
1244 }
1245 return out;
1246}
1247
[51587aa]1248// Local Variables: //
1249// tab-width: 4 //
1250// mode: c++ //
1251// compile-command: "make install" //
1252// End: //
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