c4f6fbe971
Target is one of the classes responsible for vending ClangASTImporter. Target doesn't need to know anything about ClangASTImporter, so if we instead have ClangPersistentVariables vend it, we can preserve existing behavior while improving layering and removing dependencies from non-plugins to plugins.
110 lines
3.9 KiB
C++
110 lines
3.9 KiB
C++
//===-- ClangPersistentVariables.cpp --------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "ClangPersistentVariables.h"
|
|
|
|
#include "lldb/Core/Value.h"
|
|
#include "lldb/Symbol/ClangASTImporter.h"
|
|
#include "lldb/Symbol/TypeSystemClang.h"
|
|
#include "lldb/Target/Target.h"
|
|
#include "lldb/Utility/DataExtractor.h"
|
|
#include "lldb/Utility/Log.h"
|
|
#include "lldb/Utility/StreamString.h"
|
|
|
|
#include "clang/AST/Decl.h"
|
|
|
|
#include "llvm/ADT/StringMap.h"
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
|
|
ClangPersistentVariables::ClangPersistentVariables()
|
|
: lldb_private::PersistentExpressionState(LLVMCastKind::eKindClang) {}
|
|
|
|
ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
|
|
const lldb::ValueObjectSP &valobj_sp) {
|
|
return AddNewlyConstructedVariable(new ClangExpressionVariable(valobj_sp));
|
|
}
|
|
|
|
ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
|
|
ExecutionContextScope *exe_scope, ConstString name,
|
|
const CompilerType &compiler_type, lldb::ByteOrder byte_order,
|
|
uint32_t addr_byte_size) {
|
|
return AddNewlyConstructedVariable(new ClangExpressionVariable(
|
|
exe_scope, name, compiler_type, byte_order, addr_byte_size));
|
|
}
|
|
|
|
void ClangPersistentVariables::RemovePersistentVariable(
|
|
lldb::ExpressionVariableSP variable) {
|
|
RemoveVariable(variable);
|
|
|
|
// Check if the removed variable was the last one that was created. If yes,
|
|
// reuse the variable id for the next variable.
|
|
|
|
// Nothing to do if we have not assigned a variable id so far.
|
|
if (m_next_persistent_variable_id == 0)
|
|
return;
|
|
|
|
llvm::StringRef name = variable->GetName().GetStringRef();
|
|
// Remove the prefix from the variable that only the indes is left.
|
|
if (!name.consume_front(GetPersistentVariablePrefix(false)))
|
|
return;
|
|
|
|
// Check if the variable contained a variable id.
|
|
uint32_t variable_id;
|
|
if (name.getAsInteger(10, variable_id))
|
|
return;
|
|
// If it's the most recent variable id that was assigned, make sure that this
|
|
// variable id will be used for the next persistent variable.
|
|
if (variable_id == m_next_persistent_variable_id - 1)
|
|
m_next_persistent_variable_id--;
|
|
}
|
|
|
|
llvm::Optional<CompilerType>
|
|
ClangPersistentVariables::GetCompilerTypeFromPersistentDecl(
|
|
ConstString type_name) {
|
|
PersistentDecl p = m_persistent_decls.lookup(type_name.GetCString());
|
|
|
|
if (p.m_decl == nullptr)
|
|
return llvm::None;
|
|
|
|
if (clang::TypeDecl *tdecl = llvm::dyn_cast<clang::TypeDecl>(p.m_decl)) {
|
|
opaque_compiler_type_t t = static_cast<opaque_compiler_type_t>(
|
|
const_cast<clang::Type *>(tdecl->getTypeForDecl()));
|
|
return CompilerType(p.m_context, t);
|
|
}
|
|
return llvm::None;
|
|
}
|
|
|
|
void ClangPersistentVariables::RegisterPersistentDecl(ConstString name,
|
|
clang::NamedDecl *decl,
|
|
TypeSystemClang *ctx) {
|
|
PersistentDecl p = {decl, ctx};
|
|
m_persistent_decls.insert(std::make_pair(name.GetCString(), p));
|
|
|
|
if (clang::EnumDecl *enum_decl = llvm::dyn_cast<clang::EnumDecl>(decl)) {
|
|
for (clang::EnumConstantDecl *enumerator_decl : enum_decl->enumerators()) {
|
|
p = {enumerator_decl, ctx};
|
|
m_persistent_decls.insert(std::make_pair(
|
|
ConstString(enumerator_decl->getNameAsString()).GetCString(), p));
|
|
}
|
|
}
|
|
}
|
|
|
|
clang::NamedDecl *
|
|
ClangPersistentVariables::GetPersistentDecl(ConstString name) {
|
|
return m_persistent_decls.lookup(name.GetCString()).m_decl;
|
|
}
|
|
|
|
lldb::ClangASTImporterSP ClangPersistentVariables::GetClangASTImporter() {
|
|
if (!m_ast_importer_sp) {
|
|
m_ast_importer_sp = std::make_shared<ClangASTImporter>();
|
|
}
|
|
return m_ast_importer_sp;
|
|
}
|