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Extend the encoding parser to support the @typeName syntax for Objective-C object types 

llvm-svn: 216305
This commit is contained in:
Enrico Granata 2014-08-23 00:20:33 +00:00
parent 3ee335a762
commit e3eface17a
2 changed files with 24 additions and 7 deletions
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23
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTypeEncodingParser.cpp
View File

@ -37,7 +37,7 @@ AppleObjCTypeEncodingParser::ReadStructName(lldb_utility::StringLexer& type)
}
std::string
AppleObjCTypeEncodingParser::ReadStructElementName(lldb_utility::StringLexer& type)
AppleObjCTypeEncodingParser::ReadQuotedString(lldb_utility::StringLexer& type)
{
StreamString buffer;
while (type.HasAtLeast(1) && type.Peek() != '"')
@ -68,7 +68,7 @@ AppleObjCTypeEncodingParser::ReadStructElement (clang::ASTContext &ast_ctx, lldb
{
StructElement retval;
if (type.NextIf('"'))
retval.name = ReadStructElementName(type);
retval.name = ReadQuotedString(type);
if (!type.NextIf('"'))
return retval;
uint32_t bitfield_size = 0;
@ -159,6 +159,20 @@ AppleObjCTypeEncodingParser::BuildArray (clang::ASTContext &ast_ctx, lldb_utilit
return array_type.GetQualType();
}
// the runtime can emit these in the form of @"SomeType", giving more specifics
// this would be interesting for expression parser interop, but since we actually try
// to avoid exposing the ivar info to the expression evaluator, consume but ignore the type info
// and always return an 'id'; if anything, dynamic typing will resolve things for us anyway
clang::QualType
AppleObjCTypeEncodingParser::BuildObjCObjectType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype)
{
if (!type.NextIf('@'))
return clang::QualType();
if (type.NextIf('"'))
ReadQuotedString(type);
return ast_ctx.getObjCIdType();;
}
clang::QualType
AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer& type, bool allow_unknownanytype, uint32_t *bitfield_bit_size)
{
@ -205,8 +219,6 @@ AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer&
return ast_ctx.VoidTy;
if (type.NextIf('*'))
return ast_ctx.getPointerType(ast_ctx.CharTy);
if (type.NextIf('@'))
return ast_ctx.getObjCIdType();
if (type.NextIf('#'))
return ast_ctx.getObjCClassType();
if (type.NextIf(':'))
@ -258,6 +270,9 @@ AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer&
if (type.Peek() == '(')
return BuildUnion(ast_ctx, type, allow_unknownanytype);
if (type.Peek() == '@')
return BuildObjCObjectType(ast_ctx, type, allow_unknownanytype);
return clang::QualType();
}

6
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTypeEncodingParser.h
View File

@ -65,12 +65,14 @@ namespace lldb_private {
StructElement
ReadStructElement (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
std::string
ReadStructElementName(lldb_utility::StringLexer& type);
clang::QualType
BuildObjCObjectType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
uint32_t
ReadNumber (lldb_utility::StringLexer& type);
std::string
ReadQuotedString(lldb_utility::StringLexer& type);
};
} // namespace lldb_private