Initial import of lldb

Change-Id: Ib244e837bee349effa12b2ff6ffffbe3d730e929

external/bsd/llvm/dist/lldb/source/Expression/ClangPersistentVariables.cpp

@@ -0,0 +1,89 @@
+//===-- ClangPersistentVariables.cpp ----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/ClangPersistentVariables.h"
+#include "lldb/Core/DataExtractor.h"
+#include "lldb/Core/Log.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Core/Value.h"
+
+#include "llvm/ADT/StringMap.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+ClangPersistentVariables::ClangPersistentVariables () :
+    ClangExpressionVariableList(),
+    m_next_persistent_variable_id (0)
+{
+}
+
+ClangExpressionVariableSP
+ClangPersistentVariables::CreatePersistentVariable (const lldb::ValueObjectSP &valobj_sp)
+{
+    ClangExpressionVariableSP var_sp (CreateVariable(valobj_sp));
+    return var_sp;
+}
+
+ClangExpressionVariableSP
+ClangPersistentVariables::CreatePersistentVariable (ExecutionContextScope *exe_scope, 
+                                                    const ConstString &name, 
+                                                    const TypeFromUser& user_type, 
+                                                    lldb::ByteOrder byte_order, 
+                                                    uint32_t addr_byte_size)
+{
+    ClangExpressionVariableSP var_sp (GetVariable(name));
+    
+    if (!var_sp)
+        var_sp = CreateVariable(exe_scope, name, user_type, byte_order, addr_byte_size);
+
+    return var_sp;
+}
+
+void
+ClangPersistentVariables::RemovePersistentVariable (lldb::ClangExpressionVariableSP variable)
+{
+    RemoveVariable(variable);
+    
+    const char *name = variable->GetName().AsCString();
+    
+    if (*name != '$')
+        return;
+    name++;
+    
+    if (strtoul(name, NULL, 0) == m_next_persistent_variable_id - 1)
+        m_next_persistent_variable_id--;
+}
+
+ConstString
+ClangPersistentVariables::GetNextPersistentVariableName ()
+{
+    char name_cstr[256];
+    ::snprintf (name_cstr, sizeof(name_cstr), "$%u", m_next_persistent_variable_id++);
+    ConstString name(name_cstr);
+    return name;
+}
+
+void
+ClangPersistentVariables::RegisterPersistentType (const ConstString &name,
+                                                  clang::TypeDecl *type_decl)
+{
+    m_persistent_types.insert(std::pair<const char*, clang::TypeDecl*>(name.GetCString(), type_decl));
+}
+
+clang::TypeDecl *
+ClangPersistentVariables::GetPersistentType (const ConstString &name)
+{
+    PersistentTypeMap::const_iterator i = m_persistent_types.find(name.GetCString());
+    
+    if (i == m_persistent_types.end())
+        return NULL;
+    else
+        return i->second;
+}