hanchenye-llvm-project/lldb/source/Symbol/ClangASTImporter.cpp

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//===-- ClangASTImporter.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Symbol/ClangASTImporter.h"
#include "lldb/Symbol/ClangNamespaceDecl.h"
using namespace lldb_private;
using namespace clang;
clang::QualType
ClangASTImporter::CopyType (clang::ASTContext *dst_ast,
clang::ASTContext *src_ast,
clang::QualType type)
{
MinionSP minion_sp (GetMinion(dst_ast, src_ast));
if (minion_sp)
return minion_sp->Import(type);
return QualType();
}
lldb::clang_type_t
ClangASTImporter::CopyType (clang::ASTContext *dst_ast,
clang::ASTContext *src_ast,
lldb::clang_type_t type)
{
return CopyType (dst_ast, src_ast, QualType::getFromOpaquePtr(type)).getAsOpaquePtr();
}
clang::Decl *
ClangASTImporter::CopyDecl (clang::ASTContext *dst_ast,
clang::ASTContext *src_ast,
clang::Decl *decl)
{
MinionSP minion_sp;
minion_sp = GetMinion(dst_ast, src_ast);
if (minion_sp)
{
clang::Decl *result = minion_sp->Import(decl);
if (!result)
{
lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
if (log)
{
if (NamedDecl *named_decl = dyn_cast<NamedDecl>(decl))
log->Printf(" [ClangASTImporter] WARNING: Failed to import a %s '%s'", decl->getDeclKindName(), named_decl->getNameAsString().c_str());
else
log->Printf(" [ClangASTImporter] WARNING: Failed to import a %s", decl->getDeclKindName());
}
}
return result;
}
return NULL;
}
clang::Decl *
ClangASTImporter::DeportDecl (clang::ASTContext *dst_ctx,
clang::ASTContext *src_ctx,
clang::Decl *decl)
{
clang::Decl *result = CopyDecl(dst_ctx, src_ctx, decl);
if (!result)
return NULL;
ClangASTContext::GetCompleteDecl (src_ctx, decl);
MinionSP minion_sp (GetMinion (dst_ctx, src_ctx));
if (minion_sp && isa<TagDecl>(decl))
minion_sp->ImportDefinition(decl);
ASTContextMetadataSP to_context_md = GetContextMetadata(dst_ctx);
to_context_md->m_origins.erase(result);
return result;
}
void
ClangASTImporter::CompleteTagDecl (clang::TagDecl *decl)
{
lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
DeclOrigin decl_origin = GetDeclOrigin(decl);
if (!decl_origin.Valid())
return;
if (!ClangASTContext::GetCompleteDecl(decl_origin.ctx, decl_origin.decl))
return;
MinionSP minion_sp (GetMinion(&decl->getASTContext(), decl_origin.ctx));
if (minion_sp)
minion_sp->ImportDefinition(decl_origin.decl);
return;
}
void
ClangASTImporter::CompleteObjCInterfaceDecl (clang::ObjCInterfaceDecl *interface_decl)
{
lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
DeclOrigin decl_origin = GetDeclOrigin(interface_decl);
if (!decl_origin.Valid())
return;
if (!ClangASTContext::GetCompleteDecl(decl_origin.ctx, decl_origin.decl))
return;
MinionSP minion_sp (GetMinion(&interface_decl->getASTContext(), decl_origin.ctx));
if (minion_sp)
minion_sp->ImportDefinition(decl_origin.decl);
return;
}
ClangASTImporter::DeclOrigin
ClangASTImporter::GetDeclOrigin(const clang::Decl *decl)
{
ASTContextMetadataSP context_md = GetContextMetadata(&decl->getASTContext());
OriginMap &origins = context_md->m_origins;
OriginMap::iterator iter = origins.find(decl);
if (iter != origins.end())
return iter->second;
else
return DeclOrigin();
}
void
ClangASTImporter::RegisterNamespaceMap(const clang::NamespaceDecl *decl,
NamespaceMapSP &namespace_map)
{
ASTContextMetadataSP context_md = GetContextMetadata(&decl->getASTContext());
context_md->m_namespace_maps[decl] = namespace_map;
}
ClangASTImporter::NamespaceMapSP
ClangASTImporter::GetNamespaceMap(const clang::NamespaceDecl *decl)
{
ASTContextMetadataSP context_md = GetContextMetadata(&decl->getASTContext());
NamespaceMetaMap &namespace_maps = context_md->m_namespace_maps;
NamespaceMetaMap::iterator iter = namespace_maps.find(decl);
if (iter != namespace_maps.end())
return iter->second;
else
return NamespaceMapSP();
}
void
ClangASTImporter::BuildNamespaceMap(const clang::NamespaceDecl *decl)
{
ASTContextMetadataSP context_md = GetContextMetadata(&decl->getASTContext());
const DeclContext *parent_context = decl->getDeclContext();
const NamespaceDecl *parent_namespace = dyn_cast<NamespaceDecl>(parent_context);
NamespaceMapSP parent_map;
if (parent_namespace)
parent_map = GetNamespaceMap(parent_namespace);
NamespaceMapSP new_map;
new_map.reset(new NamespaceMap);
if (context_md->m_map_completer)
{
std::string namespace_string = decl->getDeclName().getAsString();
context_md->m_map_completer->CompleteNamespaceMap (new_map, ConstString(namespace_string.c_str()), parent_map);
}
context_md->m_namespace_maps[decl] = new_map;
}
void
ClangASTImporter::ForgetDestination (clang::ASTContext *dst_ast)
{
m_metadata_map.erase(dst_ast);
}
void
ClangASTImporter::ForgetSource (clang::ASTContext *dst_ast, clang::ASTContext *src_ast)
{
ASTContextMetadataSP md = MaybeGetContextMetadata (dst_ast);
if (!md)
return;
md->m_minions.erase(src_ast);
for (OriginMap::iterator iter = md->m_origins.begin();
iter != md->m_origins.end();
)
{
if (iter->second.ctx == src_ast)
md->m_origins.erase(iter++);
else
++iter;
}
}
ClangASTImporter::MapCompleter::~MapCompleter ()
{
return;
}
ClangASTImporter::ObjCInterfaceMapSP
ClangASTImporter::GetObjCInterfaceMap (const clang::ObjCInterfaceDecl *decl)
{
ASTContextMetadataSP context_md = GetContextMetadata(&decl->getASTContext());
ObjCInterfaceMetaMap &objc_interface_maps = context_md->m_objc_interface_maps;
ObjCInterfaceMetaMap::iterator iter = objc_interface_maps.find(decl);
if (iter != objc_interface_maps.end())
return iter->second;
else
return ObjCInterfaceMapSP();
}
void
ClangASTImporter::BuildObjCInterfaceMap (const clang::ObjCInterfaceDecl *decl)
{
ASTContextMetadataSP context_md = GetContextMetadata(&decl->getASTContext());
ObjCInterfaceMapSP new_map(new ObjCInterfaceMap);
if (context_md->m_map_completer)
{
std::string namespace_string = decl->getDeclName().getAsString();
context_md->m_map_completer->CompleteObjCInterfaceMap(new_map, ConstString(namespace_string.c_str()));
}
context_md->m_objc_interface_maps[decl] = new_map;
}
clang::Decl
*ClangASTImporter::Minion::Imported (clang::Decl *from, clang::Decl *to)
{
lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
if (log)
{
if (NamedDecl *from_named_decl = dyn_cast<clang::NamedDecl>(from))
{
log->Printf(" [ClangASTImporter] Imported (%sDecl*)%p, named %s (from (Decl*)%p)",
from->getDeclKindName(),
to,
from_named_decl->getName().str().c_str(),
from);
}
else
{
log->Printf(" [ClangASTImporter] Imported (%sDecl*)%p (from (Decl*)%p)",
from->getDeclKindName(),
to,
from);
}
}
ASTContextMetadataSP to_context_md = m_master.GetContextMetadata(&to->getASTContext());
ASTContextMetadataSP from_context_md = m_master.MaybeGetContextMetadata(m_source_ctx);
if (from_context_md)
{
OriginMap &origins = from_context_md->m_origins;
OriginMap::iterator origin_iter = origins.find(from);
if (origin_iter != origins.end())
{
to_context_md->m_origins[to] = origin_iter->second;
if (log)
log->Printf(" [ClangASTImporter] Propagated origin (Decl*)%p/(ASTContext*)%p from (ASTContext*)%p to (ASTContext*)%p",
origin_iter->second.decl,
origin_iter->second.ctx,
&from->getASTContext(),
&to->getASTContext());
}
else
{
to_context_md->m_origins[to] = DeclOrigin(m_source_ctx, from);
if (log)
log->Printf(" [ClangASTImporter] Decl has no origin information in (ASTContext*)%p",
&from->getASTContext());
}
if (clang::NamespaceDecl *to_namespace = dyn_cast<clang::NamespaceDecl>(to))
{
clang::NamespaceDecl *from_namespace = dyn_cast<clang::NamespaceDecl>(from);
NamespaceMetaMap &namespace_maps = from_context_md->m_namespace_maps;
NamespaceMetaMap::iterator namespace_map_iter = namespace_maps.find(from_namespace);
if (namespace_map_iter != namespace_maps.end())
to_context_md->m_namespace_maps[to_namespace] = namespace_map_iter->second;
}
}
else
{
to_context_md->m_origins[to] = DeclOrigin (m_source_ctx, from);
if (log)
log->Printf(" [ClangASTImporter] Sourced origin (Decl*)%p/(ASTContext*)%p into (ASTContext*)%p",
from,
m_source_ctx,
&to->getASTContext());
}
if (TagDecl *from_tag_decl = dyn_cast<TagDecl>(from))
{
TagDecl *to_tag_decl = dyn_cast<TagDecl>(to);
to_tag_decl->setHasExternalLexicalStorage();
if (log)
log->Printf(" [ClangASTImporter] To is a TagDecl - attributes %s%s [%s->%s]",
(to_tag_decl->hasExternalLexicalStorage() ? " Lexical" : ""),
(to_tag_decl->hasExternalVisibleStorage() ? " Visible" : ""),
(from_tag_decl->isCompleteDefinition() ? "complete" : "incomplete"),
(to_tag_decl->isCompleteDefinition() ? "complete" : "incomplete"));
to_tag_decl = NULL;
}
if (isa<NamespaceDecl>(from))
{
NamespaceDecl *to_namespace_decl = dyn_cast<NamespaceDecl>(to);
m_master.BuildNamespaceMap(to_namespace_decl);
to_namespace_decl->setHasExternalVisibleStorage();
}
if (isa<ObjCInterfaceDecl>(from))
{
ObjCInterfaceDecl *to_interface_decl = dyn_cast<ObjCInterfaceDecl>(to);
m_master.BuildObjCInterfaceMap(to_interface_decl);
to_interface_decl->setHasExternalLexicalStorage();
to_interface_decl->setHasExternalVisibleStorage();
if (to_interface_decl->isForwardDecl())
to_interface_decl->completedForwardDecl();
to_interface_decl->setExternallyCompleted();
if (log)
log->Printf(" [ClangASTImporter] To is an ObjCInterfaceDecl - attributes %s%s%s",
(to_interface_decl->hasExternalLexicalStorage() ? " Lexical" : ""),
(to_interface_decl->hasExternalVisibleStorage() ? " Visible" : ""),
(to_interface_decl->isForwardDecl() ? " Forward" : ""));
}
return clang::ASTImporter::Imported(from, to);
While tracking down memory consumption issue a few things were needed: the ability to dump more information about modules in "target modules list". We can now dump the shared pointer reference count for modules, the pointer to the module itself (in case performance tools can help track down who has references to said pointer), and the modification time. Added "target delete [target-idx ...]" to be able to delete targets when they are no longer needed. This will help track down memory usage issues and help to resolve when module ref counts keep getting incremented. If the command gets no arguments, the currently selected target will be deleted. If any arguments are given, they must all be valid target indexes (use the "target list" command to get the current target indexes). Took care of a bunch of "no newline at end of file" warnings. TimeValue objects can now dump their time to a lldb_private::Stream object. Modified the "target modules list --global" command to not error out if there are no targets since it doesn't require a target. Fixed an issue in the MacOSX DYLD dynamic loader plug-in where if a shared library was updated on disk, we would keep using the older one, even if it was updated. Don't allow the ModuleList::GetSharedModule(...) to return an empty module. Previously we could specify a valid path on disc to a module, and specify an architecture that wasn't contained in that module and get a shared pointer to a module that wouldn't be able to return an object file or a symbol file. We now make sure an object file can be extracted prior to adding the shared pointer to the module to get added to the shared list. llvm-svn: 137196
2011-08-10 10:10:13 +08:00
}