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Correct forward-declaration-detection logic in ICG

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Fixes #724
This commit is contained in:
Derek Bankieris 2019-02-14 10:55:55 -06:00
parent a2cee328d2
commit 294e8c9e40
1 changed files with 38 additions and 28 deletions
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66
trick_source/codegen/Interface_Code_Gen/TranslationUnitVisitor.cpp
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@ -40,48 +40,58 @@ bool TranslationUnitVisitor::TraverseDecl(clang::Decl *d) {
break ;
case clang::Decl::CXXRecord : {
clang::CXXRecordDecl * crd = static_cast<clang::CXXRecordDecl *>(d) ;
clang::RecordDecl * rd = crd->getDefinition() ;
bool is_forward_declaration = false;
/* The definition of the record must exist before we can process it. The definition is
NULL when this is only a forward declaration of a class */
if ( rd == NULL ) {
is_forward_declaration = true;
}
/* Sometimes rd is not NULL when we still only have a forward declaration because
the file that defines the class is included before processing this fwd declare.
In this case the CXXRecordDecl file name will not match the current file name, and is
in fact empty */
clang::RecordDecl * rd = crd->getDefinition() ;
if ( rd != NULL ) {
else {
std::string rd_file = getFileName(ci , rd->RBRACELOC(), hsd) ;
std::string crd_file = getFileName(ci , crd->RBRACELOC(), hsd) ;
if (!crd_file.empty() and !crd_file.compare(rd_file)) {
//crd->dump() ; std::cout << std::endl ;
if ( isInUserCode(ci , crd->RBRACELOC(), hsd) ) {
CXXRecordVisitor cvis(ci , cs, hsd , pa, true) ;
cvis.TraverseCXXRecordDecl(static_cast<clang::CXXRecordDecl *>(d)) ;
pa.printClass(cvis.get_class_data()) ;
/* Check to see if the struct/class is forward declared in the same file.
If it is, then remove the notation that it is forward declared. This
is to allow C structs to be forward declared and typedeffed and io_src
code will be generated for both the original structure name and typedeffed
name.
struct Astruct ;
typedef struct Astruct {} Bstruct ;
*/
std::set< std::string >::iterator it ;
std::string file_name = getFileName(ci , d->getLocEnd(), hsd) ;
std::string source_type = cvis.get_class_data()->getName() ;
it = fwd_declared_classes[file_name].find(source_type) ;
if ( it != fwd_declared_classes[file_name].end() ) {
fwd_declared_classes[file_name].erase(it) ;
}
}
if (crd_file.empty() || crd_file.compare(rd_file)) {
is_forward_declaration = true;
}
} else {
}
if (is_forward_declaration) {
// These are forward declarations. Insert this into the set of fwd declares keyed by the current file.
if ( ! crd->getNameAsString().empty() ) {
fwd_declared_classes[getFileName(ci , d->getLocEnd(), hsd)].insert(crd->getNameAsString()) ;
}
}
else {
//crd->dump() ; std::cout << std::endl ;
if ( isInUserCode(ci , crd->RBRACELOC(), hsd) ) {
CXXRecordVisitor cvis(ci , cs, hsd , pa, true) ;
cvis.TraverseCXXRecordDecl(static_cast<clang::CXXRecordDecl *>(d)) ;
pa.printClass(cvis.get_class_data()) ;
/* Check to see if the struct/class is forward declared in the same file.
If it is, then remove the notation that it is forward declared. This
is to allow C structs to be forward declared and typedeffed and io_src
code will be generated for both the original structure name and typedeffed
name.
struct Astruct ;
typedef struct Astruct {} Bstruct ;
*/
std::set< std::string >::iterator it ;
std::string file_name = getFileName(ci , d->getLocEnd(), hsd) ;
std::string source_type = cvis.get_class_data()->getName() ;
it = fwd_declared_classes[file_name].find(source_type) ;
if ( it != fwd_declared_classes[file_name].end() ) {
fwd_declared_classes[file_name].erase(it) ;
}
}
}
}
break ;
case clang::Decl::Enum : {