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Added the ability for clients to grab a set of symbol table indexes and then

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add them to a fast lookup map. lldb_private::Symtab now export the following
public typedefs:

namespace lldb_private {

	class Symtab {
		typedef std::vector<uint32_t> IndexCollection;
		typedef UniqueCStringMap<uint32_t> NameToIndexMap;
	};
}

Clients can then find symbols by name and or type and end up with a 
Symtab::IndexCollection that is filled with indexes. These indexes can then
be put into a name to index lookup map and control if the mangled and 
demangled names get added to the map:

bool add_demangled = true;
bool add_mangled = true;
Symtab::NameToIndexMap name_to_index;
symtab->AppendSymbolNamesToMap (indexes, add_demangled, add_mangled, name_to_index).

This can be repeated as many times as needed to get a lookup table that
you are happy with, and then this can be sorted:

name_to_index.Sort();

Now name lookups can be done using a subset of the symbols you extracted from
the symbol table. This is currently being used to extract objective C types
from object files when there is no debug info in SymbolFileSymtab.

Cleaned up how the objective C types were being vended to be more efficient
and fixed some errors in the regular expression that was being used.

llvm-svn: 145777
This commit is contained in:
Greg Clayton
2011-12-03 20:02:42 +00:00
parent fb9968d6f1
commit 1075acafeb
6 changed files with 127 additions and 119 deletions
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2
lldb/source/Expression/IRForTarget.cpp
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@@ -1748,7 +1748,7 @@ IRForTarget::HandleObjCClass(Value *classlist_reference)
StringRef name(initializer->getName());
lldb_private::ConstString name_cstr(name.str().c_str());
lldb::addr_t class_ptr = m_decl_map->GetSymbolAddress(name_cstr, lldb::eSymbolTypeRuntime);
lldb::addr_t class_ptr = m_decl_map->GetSymbolAddress(name_cstr, lldb::eSymbolTypeObjCClass);
if (log)
log->Printf("Found reference to Objective-C class %s (0x%llx)", name_cstr.AsCString(), (unsigned long long)class_ptr);