Initial checkin of lldb code from internal Apple repo.

llvm-svn: 105619

1 files changed, 100 insertions, 0 deletions

diff --git a/lldb/source/Expression/ClangExpressionVariable.cpp b/lldb/source/Expression/ClangExpressionVariable.cpp
new file mode 100644
index 000000000000..40fee4b47f56
--- /dev/null
+++ b/lldb/source/Expression/ClangExpressionVariable.cpp
@@ -0,0 +1,100 @@
+//===-- ClangExpressionVariable.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/ClangExpressionVariable.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "clang/AST/ASTContext.h"
+
+using namespace lldb_private;
+using namespace clang;
+
+ClangExpressionVariableList::ClangExpressionVariableList() :
+    m_variables()
+{
+}
+
+ClangExpressionVariableList::~ClangExpressionVariableList()
+{
+    uint32_t num_variables = m_variables.size();
+    uint32_t var_index;
+        
+    for (var_index = 0; var_index < num_variables; ++var_index)
+        delete m_variables[var_index].m_value;
+}
+
+Value *
+ValueForDecl(ASTContext &ast_context, const VarDecl *var_decl)
+{
+    Value *ret = new Value;
+        
+    ret->SetContext(Value::eContextTypeOpaqueClangQualType, 
+                    var_decl->getType().getAsOpaquePtr());
+    
+    uint64_t bit_width = ast_context.getTypeSize(var_decl->getType());
+    
+    uint32_t byte_size = (bit_width + 7 ) / 8;
+    
+    ret->ResizeData(byte_size);
+    
+    return ret;
+}
+
+Value *
+ClangExpressionVariableList::GetVariableForVarDecl (ASTContext &ast_context, const VarDecl *var_decl, uint32_t& idx, bool can_create)
+{
+    uint32_t num_variables = m_variables.size();
+    uint32_t var_index;
+    
+    for (var_index = 0; var_index < num_variables; ++var_index)
+    {
+        if (m_variables[var_index].m_var_decl == var_decl)
+        {
+            idx = var_index;
+            return m_variables[var_index].m_value;
+        }
+    }
+
+    if (!can_create)
+        return NULL;
+    
+    idx = m_variables.size();
+    
+    ClangExpressionVariable val;
+    val.m_var_decl = var_decl;
+    val.m_value = ValueForDecl(ast_context, var_decl);
+    m_variables.push_back(val);
+    
+    return m_variables.back().m_value;
+}
+
+Value *
+ClangExpressionVariableList::GetVariableAtIndex (uint32_t idx)
+{
+    if (idx < m_variables.size())
+        return m_variables[idx].m_value;
+    
+    return NULL;
+}
+
+uint32_t
+ClangExpressionVariableList::AppendValue (Value *value)
+{
+    uint32_t idx = m_variables.size();
+    
+    ClangExpressionVariable val;
+    val.m_var_decl = NULL;
+    val.m_value = value;
+    
+    m_variables.push_back(val);
+    return idx;
+}