53c47f1e2f
SBValue to access it. For now this is just the result of ObjC NSPrintForDebugger, but could be extended. Also store the results of the ObjC Object Printer in a Stream, not a ConstString. llvm-svn: 113660
123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
//===-- ObjCObjectPrinter.cpp -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/StreamString.h"
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#include "lldb/Expression/ClangFunction.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/ObjCObjectPrinter.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// ObjCObjectPrinter constructor
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//----------------------------------------------------------------------
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ObjCObjectPrinter::ObjCObjectPrinter (Process &process) :
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m_process(process)
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{
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}
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//----------------------------------------------------------------------
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// Destructor
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//----------------------------------------------------------------------
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ObjCObjectPrinter::~ObjCObjectPrinter ()
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{
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}
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bool
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ObjCObjectPrinter::PrintObject (Stream &str, Value &object_ptr, ExecutionContext &exe_ctx)
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{
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if (!exe_ctx.process)
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return false;
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const Address *function_address = GetPrintForDebuggerAddr();
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if (!function_address)
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return false;
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const char *target_triple = exe_ctx.process->GetTargetTriple().GetCString();
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ClangASTContext *ast_context = exe_ctx.target->GetScratchClangASTContext();
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void *return_qualtype = ast_context->GetCStringType(true);
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Value ret;
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ret.SetContext(Value::eContextTypeOpaqueClangQualType, return_qualtype);
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ValueList arg_value_list;
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arg_value_list.PushValue(object_ptr);
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ClangFunction func(target_triple, ast_context, return_qualtype, *function_address, arg_value_list);
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StreamString error_stream;
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lldb::addr_t wrapper_struct_addr = LLDB_INVALID_ADDRESS;
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func.InsertFunction(exe_ctx, wrapper_struct_addr, error_stream);
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// FIXME: Check result of ExecuteFunction.
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ClangFunction::ExecutionResults results
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= func.ExecuteFunction(exe_ctx, &wrapper_struct_addr, error_stream, true, 1000, true, ret);
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if (results != ClangFunction::eExecutionCompleted)
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{
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str.Printf("Error evaluating Print Object function: %d.\n", results);
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return false;
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}
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addr_t result_ptr = ret.GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
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// poor man's strcpy
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Error error;
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std::vector<char> desc;
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while (1)
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{
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char byte = '\0';
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if (exe_ctx.process->ReadMemory(result_ptr + desc.size(), &byte, 1, error) != 1)
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break;
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desc.push_back(byte);
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if (byte == '\0')
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break;
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}
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if (!desc.empty())
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{
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str.PutCString(&desc.front());
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return true;
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}
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return false;
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}
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Address *
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ObjCObjectPrinter::GetPrintForDebuggerAddr()
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{
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if (!m_PrintForDebugger_addr.get())
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{
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ModuleList &modules = m_process.GetTarget().GetImages();
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SymbolContextList contexts;
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SymbolContext context;
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if((!modules.FindSymbolsWithNameAndType(ConstString ("_NSPrintForDebugger"), eSymbolTypeCode, contexts)) &&
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(!modules.FindSymbolsWithNameAndType(ConstString ("_CFPrintForDebugger"), eSymbolTypeCode, contexts)))
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return NULL;
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contexts.GetContextAtIndex(0, context);
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m_PrintForDebugger_addr.reset(new Address(context.symbol->GetValue()));
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}
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return m_PrintForDebugger_addr.get();
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}
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