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- Use "for_expression" rather than "allow_unknownanytype" 

to indicate that we're doing stuff for the expression
  parser.

- When for_expression is true, look through @s and find
  the actual class rather than just returning id. 

- Rename BuildObjCObjectType to BuildObjCObjectPointerType
  since it's actually returning an object *pointer* type.

llvm-svn: 220979
This commit is contained in:
Sean Callanan 2014-10-31 18:02:30 +00:00
parent c32615dfef
commit a330933f15
4 changed files with 71 additions and 40 deletions
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6
lldb/include/lldb/Target/ObjCLanguageRuntime.h
View File

@ -278,10 +278,10 @@ public:
class EncodingToType
{
public:
virtual ClangASTType RealizeType (ClangASTContext& ast_ctx, const char* name, bool allow_unknownanytype);
virtual ClangASTType RealizeType (const char* name, bool allow_unknownanytype);
virtual ClangASTType RealizeType (ClangASTContext& ast_ctx, const char* name, bool for_expression);
virtual ClangASTType RealizeType (const char* name, bool for_expression);
virtual ClangASTType RealizeType (clang::ASTContext& ast_ctx, const char* name, bool allow_unknownanytype) = 0;
virtual ClangASTType RealizeType (clang::ASTContext& ast_ctx, const char* name, bool for_expression) = 0;
virtual ~EncodingToType();

79
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTypeEncodingParser.cpp
View File

@ -21,7 +21,8 @@ using namespace lldb_private;
using namespace lldb_utility;
AppleObjCTypeEncodingParser::AppleObjCTypeEncodingParser (ObjCLanguageRuntime& runtime) :
ObjCLanguageRuntime::EncodingToType()
ObjCLanguageRuntime::EncodingToType(),
m_runtime(runtime)
{
if (!m_scratch_ast_ctx_ap)
m_scratch_ast_ctx_ap.reset(new ClangASTContext(runtime.GetProcess()->GetTarget().GetArchitecture().GetTriple().str().c_str()));
@ -64,7 +65,7 @@ bitfield(0)
{}
AppleObjCTypeEncodingParser::StructElement
AppleObjCTypeEncodingParser::ReadStructElement (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype)
AppleObjCTypeEncodingParser::ReadStructElement (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression)
{
StructElement retval;
if (type.NextIf('"'))
@ -72,25 +73,25 @@ AppleObjCTypeEncodingParser::ReadStructElement (clang::ASTContext &ast_ctx, lldb
if (!type.NextIf('"'))
return retval;
uint32_t bitfield_size = 0;
retval.type = BuildType(ast_ctx, type, allow_unknownanytype, &bitfield_size);
retval.type = BuildType(ast_ctx, type, for_expression, &bitfield_size);
retval.bitfield = bitfield_size;
return retval;
}
clang::QualType
AppleObjCTypeEncodingParser::BuildStruct (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype)
AppleObjCTypeEncodingParser::BuildStruct (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression)
{
return BuildAggregate(ast_ctx, type, allow_unknownanytype, '{', '}', clang::TTK_Struct);
return BuildAggregate(ast_ctx, type, for_expression, '{', '}', clang::TTK_Struct);
}
clang::QualType
AppleObjCTypeEncodingParser::BuildUnion (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype)
AppleObjCTypeEncodingParser::BuildUnion (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression)
{
return BuildAggregate(ast_ctx, type, allow_unknownanytype, '(', ')', clang::TTK_Union);
return BuildAggregate(ast_ctx, type, for_expression, '(', ')', clang::TTK_Union);
}
clang::QualType
AppleObjCTypeEncodingParser::BuildAggregate (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype, char opener, char closer, uint32_t kind)
AppleObjCTypeEncodingParser::BuildAggregate (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression, char opener, char closer, uint32_t kind)
{
if (!type.NextIf(opener))
return clang::QualType();
@ -108,7 +109,7 @@ AppleObjCTypeEncodingParser::BuildAggregate (clang::ASTContext &ast_ctx, lldb_ut
}
else
{
auto element = ReadStructElement(ast_ctx, type, allow_unknownanytype);
auto element = ReadStructElement(ast_ctx, type, for_expression);
if (element.type.isNull())
break;
else
@ -144,12 +145,12 @@ AppleObjCTypeEncodingParser::BuildAggregate (clang::ASTContext &ast_ctx, lldb_ut
}
clang::QualType
AppleObjCTypeEncodingParser::BuildArray (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype)
AppleObjCTypeEncodingParser::BuildArray (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression)
{
if (!type.NextIf('['))
return clang::QualType();
uint32_t size = ReadNumber(type);
clang::QualType element_type(BuildType(ast_ctx, type, allow_unknownanytype));
clang::QualType element_type(BuildType(ast_ctx, type, for_expression));
if (!type.NextIf(']'))
return clang::QualType();
ClangASTContext *lldb_ctx = ClangASTContext::GetASTContext(&ast_ctx);
@ -164,17 +165,45 @@ AppleObjCTypeEncodingParser::BuildArray (clang::ASTContext &ast_ctx, lldb_utilit
// 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)
AppleObjCTypeEncodingParser::BuildObjCObjectPointerType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression)
{
if (!type.NextIf('@'))
return clang::QualType();
std::string name;
if (type.NextIf('"'))
ReadQuotedString(type);
return ast_ctx.getObjCIdType();;
name = ReadQuotedString(type);
if (for_expression && !name.empty() && name[0] != '<')
{
TypeVendor *type_vendor = m_runtime.GetTypeVendor();
assert (type_vendor); // how are we parsing type encodings for expressions if a type vendor isn't in play?
assert (type_vendor->GetClangASTContext() == &ast_ctx); // it doesn't make sense for us to be looking in other places
const bool append = false;
const uint32_t max_matches = 1;
std::vector<ClangASTType> types;
uint32_t num_types = type_vendor->FindTypes(ConstString(name),
append,
max_matches,
types);
assert(num_types); // how can a type be mentioned in runtime type signatures and not be in the runtime?
return types[0].GetPointerType().GetQualType();
}
else
{
// We're going to resolve this dynamically anyway, so just smile and wave.
return ast_ctx.getObjCIdType();
}
}
clang::QualType
AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer& type, bool allow_unknownanytype, uint32_t *bitfield_bit_size)
AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer& type, bool for_expression, uint32_t *bitfield_bit_size)
{
if (!type.HasAtLeast(1))
return clang::QualType();
@ -238,7 +267,7 @@ AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer&
if (type.NextIf('r'))
{
clang::QualType target_type = BuildType(ast_ctx, type, allow_unknownanytype);
clang::QualType target_type = BuildType(ast_ctx, type, for_expression);
if (target_type.isNull())
return clang::QualType();
else if (target_type == ast_ctx.UnknownAnyTy)
@ -249,7 +278,7 @@ AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer&
if (type.NextIf('^'))
{
if (!allow_unknownanytype && type.NextIf('?'))
if (!for_expression && type.NextIf('?'))
{
// if we are not supporting the concept of unknownAny, but what is being created here is an unknownAny*, then
// we can just get away with a void*
@ -259,7 +288,7 @@ AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer&
}
else
{
clang::QualType target_type = BuildType(ast_ctx, type, allow_unknownanytype);
clang::QualType target_type = BuildType(ast_ctx, type, for_expression);
if (target_type.isNull())
return clang::QualType();
else if (target_type == ast_ctx.UnknownAnyTy)
@ -270,30 +299,30 @@ AppleObjCTypeEncodingParser::BuildType (clang::ASTContext &ast_ctx, StringLexer&
}
if (type.NextIf('?'))
return allow_unknownanytype ? ast_ctx.UnknownAnyTy : clang::QualType();
return for_expression ? ast_ctx.UnknownAnyTy : clang::QualType();
if (type.Peek() == '{')
return BuildStruct(ast_ctx, type, allow_unknownanytype);
return BuildStruct(ast_ctx, type, for_expression);
if (type.Peek() == '[')
return BuildArray(ast_ctx, type, allow_unknownanytype);
return BuildArray(ast_ctx, type, for_expression);
if (type.Peek() == '(')
return BuildUnion(ast_ctx, type, allow_unknownanytype);
return BuildUnion(ast_ctx, type, for_expression);
if (type.Peek() == '@')
return BuildObjCObjectType(ast_ctx, type, allow_unknownanytype);
return BuildObjCObjectPointerType(ast_ctx, type, for_expression);
return clang::QualType();
}
ClangASTType
AppleObjCTypeEncodingParser::RealizeType (clang::ASTContext &ast_ctx, const char* name, bool allow_unknownanytype)
AppleObjCTypeEncodingParser::RealizeType (clang::ASTContext &ast_ctx, const char* name, bool for_expression)
{
if (name && name[0])
{
StringLexer lexer(name);
clang::QualType qual_type = BuildType(ast_ctx, lexer, allow_unknownanytype);
clang::QualType qual_type = BuildType(ast_ctx, lexer, for_expression);
return ClangASTType(&ast_ctx, qual_type.getAsOpaquePtr());
}
return ClangASTType();

18
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTypeEncodingParser.h
View File

@ -31,7 +31,7 @@ namespace lldb_private {
{
public:
AppleObjCTypeEncodingParser (ObjCLanguageRuntime& runtime);
virtual ClangASTType RealizeType (clang::ASTContext &ast_ctx, const char* name, bool allow_unknownanytype);
virtual ClangASTType RealizeType (clang::ASTContext &ast_ctx, const char* name, bool for_expression);
virtual ~AppleObjCTypeEncodingParser() {}
private:
@ -45,34 +45,36 @@ namespace lldb_private {
};
clang::QualType
BuildType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype, uint32_t *bitfield_bit_size = nullptr);
BuildType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression, uint32_t *bitfield_bit_size = nullptr);
clang::QualType
BuildStruct (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
BuildStruct (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression);
clang::QualType
BuildAggregate (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype, char opener, char closer, uint32_t kind);
BuildAggregate (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression, char opener, char closer, uint32_t kind);
clang::QualType
BuildUnion (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
BuildUnion (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression);
clang::QualType
BuildArray (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
BuildArray (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression);
std::string
ReadStructName(lldb_utility::StringLexer& type);
StructElement
ReadStructElement (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
ReadStructElement (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression);
clang::QualType
BuildObjCObjectType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool allow_unknownanytype);
BuildObjCObjectPointerType (clang::ASTContext &ast_ctx, lldb_utility::StringLexer& type, bool for_expression);
uint32_t
ReadNumber (lldb_utility::StringLexer& type);
std::string
ReadQuotedString(lldb_utility::StringLexer& type);
ObjCLanguageRuntime& m_runtime;
};
} // namespace lldb_private

8
lldb/source/Target/ObjCLanguageRuntime.cpp
View File

@ -603,20 +603,20 @@ ObjCLanguageRuntime::GetNonKVOClassDescriptor (ObjCISA isa)
ClangASTType
ObjCLanguageRuntime::EncodingToType::RealizeType (const char* name, bool allow_unknownanytype)
ObjCLanguageRuntime::EncodingToType::RealizeType (const char* name, bool for_expression)
{
if (m_scratch_ast_ctx_ap)
return RealizeType(*m_scratch_ast_ctx_ap, name, allow_unknownanytype);
return RealizeType(*m_scratch_ast_ctx_ap, name, for_expression);
return ClangASTType();
}
ClangASTType
ObjCLanguageRuntime::EncodingToType::RealizeType (ClangASTContext& ast_ctx, const char* name, bool allow_unknownanytype)
ObjCLanguageRuntime::EncodingToType::RealizeType (ClangASTContext& ast_ctx, const char* name, bool for_expression)
{
clang::ASTContext *clang_ast = ast_ctx.getASTContext();
if (!clang_ast)
return ClangASTType();
return RealizeType(*clang_ast, name, allow_unknownanytype);
return RealizeType(*clang_ast, name, for_expression);
}
ObjCLanguageRuntime::EncodingToType::~EncodingToType() {}