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 "lldb/Expression/ClangPersistentVariables.h"
11 #include "lldb/Core/DataExtractor.h"
12 #include "lldb/Core/Log.h"
13 #include "lldb/Core/StreamString.h"
14 #include "lldb/Core/Value.h"
15
16 #include "llvm/ADT/StringMap.h"
17
18 using namespace lldb;
19 using namespace lldb_private;
20
ClangPersistentVariables()21 ClangPersistentVariables::ClangPersistentVariables () :
22 ClangExpressionVariableList(),
23 m_next_persistent_variable_id (0)
24 {
25 }
26
27 ClangExpressionVariableSP
CreatePersistentVariable(const lldb::ValueObjectSP & valobj_sp)28 ClangPersistentVariables::CreatePersistentVariable (const lldb::ValueObjectSP &valobj_sp)
29 {
30 ClangExpressionVariableSP var_sp (CreateVariable(valobj_sp));
31 return var_sp;
32 }
33
34 ClangExpressionVariableSP
CreatePersistentVariable(ExecutionContextScope * exe_scope,const ConstString & name,const TypeFromUser & user_type,lldb::ByteOrder byte_order,uint32_t addr_byte_size)35 ClangPersistentVariables::CreatePersistentVariable (ExecutionContextScope *exe_scope,
36 const ConstString &name,
37 const TypeFromUser& user_type,
38 lldb::ByteOrder byte_order,
39 uint32_t addr_byte_size)
40 {
41 ClangExpressionVariableSP var_sp (GetVariable(name));
42
43 if (!var_sp)
44 var_sp = CreateVariable(exe_scope, name, user_type, byte_order, addr_byte_size);
45
46 return var_sp;
47 }
48
49 void
RemovePersistentVariable(lldb::ClangExpressionVariableSP variable)50 ClangPersistentVariables::RemovePersistentVariable (lldb::ClangExpressionVariableSP variable)
51 {
52 RemoveVariable(variable);
53
54 const char *name = variable->GetName().AsCString();
55
56 if (*name != '$')
57 return;
58 name++;
59
60 if (strtoul(name, NULL, 0) == m_next_persistent_variable_id - 1)
61 m_next_persistent_variable_id--;
62 }
63
64 ConstString
GetNextPersistentVariableName()65 ClangPersistentVariables::GetNextPersistentVariableName ()
66 {
67 char name_cstr[256];
68 ::snprintf (name_cstr, sizeof(name_cstr), "$%u", m_next_persistent_variable_id++);
69 ConstString name(name_cstr);
70 return name;
71 }
72
73 void
RegisterPersistentType(const ConstString & name,clang::TypeDecl * type_decl)74 ClangPersistentVariables::RegisterPersistentType (const ConstString &name,
75 clang::TypeDecl *type_decl)
76 {
77 m_persistent_types.insert(std::pair<const char*, clang::TypeDecl*>(name.GetCString(), type_decl));
78 }
79
80 clang::TypeDecl *
GetPersistentType(const ConstString & name)81 ClangPersistentVariables::GetPersistentType (const ConstString &name)
82 {
83 PersistentTypeMap::const_iterator i = m_persistent_types.find(name.GetCString());
84
85 if (i == m_persistent_types.end())
86 return NULL;
87 else
88 return i->second;
89 }
90