ClangPersistentVariables.cpp revision 341825 
1//===-- ClangPersistentVariables.cpp ----------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "ClangPersistentVariables.h"
11
12#include "lldb/Core/Value.h"
13#include "lldb/Target/Target.h"
14#include "lldb/Utility/DataExtractor.h"
15#include "lldb/Utility/Log.h"
16#include "lldb/Utility/StreamString.h"
17
18#include "clang/AST/Decl.h"
19
20#include "llvm/ADT/StringMap.h"
21
22using namespace lldb;
23using namespace lldb_private;
24
25ClangPersistentVariables::ClangPersistentVariables()
26    : lldb_private::PersistentExpressionState(LLVMCastKind::eKindClang),
27      m_next_persistent_variable_id(0) {}
28
29ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
30    const lldb::ValueObjectSP &valobj_sp) {
31  return AddNewlyConstructedVariable(new ClangExpressionVariable(valobj_sp));
32}
33
34ExpressionVariableSP ClangPersistentVariables::CreatePersistentVariable(
35    ExecutionContextScope *exe_scope, const ConstString &name,
36    const CompilerType &compiler_type, lldb::ByteOrder byte_order,
37    uint32_t addr_byte_size) {
38  return AddNewlyConstructedVariable(new ClangExpressionVariable(
39      exe_scope, name, compiler_type, byte_order, addr_byte_size));
40}
41
42void ClangPersistentVariables::RemovePersistentVariable(
43    lldb::ExpressionVariableSP variable) {
44  RemoveVariable(variable);
45
46  const char *name = variable->GetName().AsCString();
47
48  if (*name != '$')
49    return;
50  name++;
51
52  if (strtoul(name, NULL, 0) == m_next_persistent_variable_id - 1)
53    m_next_persistent_variable_id--;
54}
55
56void ClangPersistentVariables::RegisterPersistentDecl(const ConstString &name,
57                                                      clang::NamedDecl *decl) {
58  m_persistent_decls.insert(
59      std::pair<const char *, clang::NamedDecl *>(name.GetCString(), decl));
60
61  if (clang::EnumDecl *enum_decl = llvm::dyn_cast<clang::EnumDecl>(decl)) {
62    for (clang::EnumConstantDecl *enumerator_decl : enum_decl->enumerators()) {
63      m_persistent_decls.insert(std::pair<const char *, clang::NamedDecl *>(
64          ConstString(enumerator_decl->getNameAsString()).GetCString(),
65          enumerator_decl));
66    }
67  }
68}
69
70clang::NamedDecl *
71ClangPersistentVariables::GetPersistentDecl(const ConstString &name) {
72  PersistentDeclMap::const_iterator i =
73      m_persistent_decls.find(name.GetCString());
74
75  if (i == m_persistent_decls.end())
76    return NULL;
77  else
78    return i->second;
79}
80