forked from OSchip/llvm-project
634 lines
26 KiB
C++
634 lines
26 KiB
C++
//===-- CommandObjectFrame.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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#include "CommandObjectFrame.h"
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// C Includes
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// C++ Includes
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#include <string>
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/StreamFile.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/Timer.h"
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#include "lldb/Core/Value.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Core/ValueObjectVariable.h"
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#include "lldb/DataFormatters/DataVisualization.h"
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#include "lldb/DataFormatters/ValueObjectPrinter.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Host/StringConvert.h"
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Interpreter/OptionGroupFormat.h"
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#include "lldb/Interpreter/OptionGroupValueObjectDisplay.h"
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#include "lldb/Interpreter/OptionGroupVariable.h"
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#include "lldb/Symbol/CompilerType.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/Type.h"
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#include "lldb/Symbol/Variable.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Target/Target.h"
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using namespace lldb;
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using namespace lldb_private;
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#pragma mark CommandObjectFrameInfo
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//-------------------------------------------------------------------------
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// CommandObjectFrameInfo
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//-------------------------------------------------------------------------
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class CommandObjectFrameInfo : public CommandObjectParsed
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{
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public:
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CommandObjectFrameInfo (CommandInterpreter &interpreter) :
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CommandObjectParsed (interpreter,
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"frame info",
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"List information about the currently selected frame in the current thread.",
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"frame info",
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eCommandRequiresFrame |
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eCommandTryTargetAPILock |
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eCommandProcessMustBeLaunched |
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eCommandProcessMustBePaused )
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{
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}
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~CommandObjectFrameInfo ()
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{
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}
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protected:
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bool
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DoExecute (Args& command, CommandReturnObject &result)
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{
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m_exe_ctx.GetFrameRef().DumpUsingSettingsFormat (&result.GetOutputStream());
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result.SetStatus (eReturnStatusSuccessFinishResult);
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return result.Succeeded();
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}
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};
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#pragma mark CommandObjectFrameSelect
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//-------------------------------------------------------------------------
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// CommandObjectFrameSelect
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//-------------------------------------------------------------------------
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class CommandObjectFrameSelect : public CommandObjectParsed
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{
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public:
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class CommandOptions : public Options
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{
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public:
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CommandOptions (CommandInterpreter &interpreter) :
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Options(interpreter)
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{
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OptionParsingStarting ();
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}
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virtual
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~CommandOptions ()
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{
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}
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virtual Error
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SetOptionValue (uint32_t option_idx, const char *option_arg)
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{
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Error error;
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bool success = false;
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const int short_option = m_getopt_table[option_idx].val;
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switch (short_option)
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{
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case 'r':
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relative_frame_offset = StringConvert::ToSInt32 (option_arg, INT32_MIN, 0, &success);
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if (!success)
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error.SetErrorStringWithFormat ("invalid frame offset argument '%s'", option_arg);
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break;
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default:
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error.SetErrorStringWithFormat ("invalid short option character '%c'", short_option);
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break;
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}
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return error;
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}
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void
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OptionParsingStarting ()
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{
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relative_frame_offset = INT32_MIN;
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}
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const OptionDefinition*
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GetDefinitions ()
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{
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return g_option_table;
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}
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// Options table: Required for subclasses of Options.
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static OptionDefinition g_option_table[];
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int32_t relative_frame_offset;
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};
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CommandObjectFrameSelect (CommandInterpreter &interpreter) :
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CommandObjectParsed (interpreter,
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"frame select",
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"Select a frame by index from within the current thread and make it the current frame.",
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NULL,
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eCommandRequiresThread |
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eCommandTryTargetAPILock |
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eCommandProcessMustBeLaunched |
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eCommandProcessMustBePaused ),
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m_options (interpreter)
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{
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CommandArgumentEntry arg;
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CommandArgumentData index_arg;
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// Define the first (and only) variant of this arg.
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index_arg.arg_type = eArgTypeFrameIndex;
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index_arg.arg_repetition = eArgRepeatOptional;
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// There is only one variant this argument could be; put it into the argument entry.
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arg.push_back (index_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg);
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}
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~CommandObjectFrameSelect ()
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{
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}
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virtual
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Options *
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GetOptions ()
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{
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return &m_options;
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}
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protected:
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bool
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DoExecute (Args& command, CommandReturnObject &result)
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{
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// No need to check "thread" for validity as eCommandRequiresThread ensures it is valid
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Thread *thread = m_exe_ctx.GetThreadPtr();
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uint32_t frame_idx = UINT32_MAX;
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if (m_options.relative_frame_offset != INT32_MIN)
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{
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// The one and only argument is a signed relative frame index
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frame_idx = thread->GetSelectedFrameIndex ();
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if (frame_idx == UINT32_MAX)
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frame_idx = 0;
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if (m_options.relative_frame_offset < 0)
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{
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if (static_cast<int32_t>(frame_idx) >= -m_options.relative_frame_offset)
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frame_idx += m_options.relative_frame_offset;
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else
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{
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if (frame_idx == 0)
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{
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//If you are already at the bottom of the stack, then just warn and don't reset the frame.
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result.AppendError("Already at the bottom of the stack");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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else
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frame_idx = 0;
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}
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}
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else if (m_options.relative_frame_offset > 0)
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{
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// I don't want "up 20" where "20" takes you past the top of the stack to produce
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// an error, but rather to just go to the top. So I have to count the stack here...
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const uint32_t num_frames = thread->GetStackFrameCount();
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if (static_cast<int32_t>(num_frames - frame_idx) > m_options.relative_frame_offset)
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frame_idx += m_options.relative_frame_offset;
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else
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{
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if (frame_idx == num_frames - 1)
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{
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//If we are already at the top of the stack, just warn and don't reset the frame.
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result.AppendError("Already at the top of the stack");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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else
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frame_idx = num_frames - 1;
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}
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}
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}
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else
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{
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if (command.GetArgumentCount() == 1)
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{
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const char *frame_idx_cstr = command.GetArgumentAtIndex(0);
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bool success = false;
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frame_idx = StringConvert::ToUInt32 (frame_idx_cstr, UINT32_MAX, 0, &success);
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if (!success)
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{
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result.AppendErrorWithFormat ("invalid frame index argument '%s'", frame_idx_cstr);
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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}
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else if (command.GetArgumentCount() == 0)
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{
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frame_idx = thread->GetSelectedFrameIndex ();
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if (frame_idx == UINT32_MAX)
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{
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frame_idx = 0;
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}
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}
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else
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{
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result.AppendError ("invalid arguments.\n");
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m_options.GenerateOptionUsage (result.GetErrorStream(), this);
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}
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}
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bool success = thread->SetSelectedFrameByIndexNoisily (frame_idx, result.GetOutputStream());
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if (success)
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{
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m_exe_ctx.SetFrameSP(thread->GetSelectedFrame ());
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result.SetStatus (eReturnStatusSuccessFinishResult);
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}
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else
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{
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result.AppendErrorWithFormat ("Frame index (%u) out of range.\n", frame_idx);
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result.SetStatus (eReturnStatusFailed);
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}
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return result.Succeeded();
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}
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protected:
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CommandOptions m_options;
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};
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OptionDefinition
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CommandObjectFrameSelect::CommandOptions::g_option_table[] =
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{
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{ LLDB_OPT_SET_1, false, "relative", 'r', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeOffset, "A relative frame index offset from the current frame index."},
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{ 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
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};
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#pragma mark CommandObjectFrameVariable
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//----------------------------------------------------------------------
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// List images with associated information
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//----------------------------------------------------------------------
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class CommandObjectFrameVariable : public CommandObjectParsed
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{
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public:
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CommandObjectFrameVariable (CommandInterpreter &interpreter) :
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CommandObjectParsed (interpreter,
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"frame variable",
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"Show frame variables. All argument and local variables "
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"that are in scope will be shown when no arguments are given. "
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"If any arguments are specified, they can be names of "
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"argument, local, file static and file global variables. "
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"Children of aggregate variables can be specified such as "
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"'var->child.x'.",
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NULL,
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eCommandRequiresFrame |
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eCommandTryTargetAPILock |
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eCommandProcessMustBeLaunched |
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eCommandProcessMustBePaused |
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eCommandRequiresProcess),
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m_option_group (interpreter),
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m_option_variable(true), // Include the frame specific options by passing "true"
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m_option_format (eFormatDefault),
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m_varobj_options()
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{
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CommandArgumentEntry arg;
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CommandArgumentData var_name_arg;
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// Define the first (and only) variant of this arg.
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var_name_arg.arg_type = eArgTypeVarName;
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var_name_arg.arg_repetition = eArgRepeatStar;
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// There is only one variant this argument could be; put it into the argument entry.
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arg.push_back (var_name_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg);
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m_option_group.Append (&m_option_variable, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
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m_option_group.Append (&m_option_format, OptionGroupFormat::OPTION_GROUP_FORMAT | OptionGroupFormat::OPTION_GROUP_GDB_FMT, LLDB_OPT_SET_1);
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m_option_group.Append (&m_varobj_options, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
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m_option_group.Finalize();
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}
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virtual
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~CommandObjectFrameVariable ()
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{
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}
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virtual
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Options *
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GetOptions ()
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{
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return &m_option_group;
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}
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virtual int
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HandleArgumentCompletion (Args &input,
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int &cursor_index,
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int &cursor_char_position,
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OptionElementVector &opt_element_vector,
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int match_start_point,
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int max_return_elements,
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bool &word_complete,
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StringList &matches)
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{
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// Arguments are the standard source file completer.
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std::string completion_str (input.GetArgumentAtIndex(cursor_index));
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completion_str.erase (cursor_char_position);
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CommandCompletions::InvokeCommonCompletionCallbacks (m_interpreter,
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CommandCompletions::eVariablePathCompletion,
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completion_str.c_str(),
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match_start_point,
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max_return_elements,
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NULL,
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word_complete,
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matches);
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return matches.GetSize();
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}
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protected:
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virtual bool
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DoExecute (Args& command, CommandReturnObject &result)
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{
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// No need to check "frame" for validity as eCommandRequiresFrame ensures it is valid
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StackFrame *frame = m_exe_ctx.GetFramePtr();
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Stream &s = result.GetOutputStream();
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bool get_file_globals = true;
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// Be careful about the stack frame, if any summary formatter runs code, it might clear the StackFrameList
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// for the thread. So hold onto a shared pointer to the frame so it stays alive.
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VariableList *variable_list = frame->GetVariableList (get_file_globals);
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VariableSP var_sp;
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ValueObjectSP valobj_sp;
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const char *name_cstr = NULL;
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size_t idx;
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TypeSummaryImplSP summary_format_sp;
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if (!m_option_variable.summary.IsCurrentValueEmpty())
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DataVisualization::NamedSummaryFormats::GetSummaryFormat(ConstString(m_option_variable.summary.GetCurrentValue()), summary_format_sp);
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else if (!m_option_variable.summary_string.IsCurrentValueEmpty())
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summary_format_sp.reset(new StringSummaryFormat(TypeSummaryImpl::Flags(),m_option_variable.summary_string.GetCurrentValue()));
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DumpValueObjectOptions options(m_varobj_options.GetAsDumpOptions(eLanguageRuntimeDescriptionDisplayVerbosityFull,eFormatDefault,summary_format_sp));
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if (variable_list)
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{
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const Format format = m_option_format.GetFormat();
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options.SetFormat(format);
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if (command.GetArgumentCount() > 0)
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{
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VariableList regex_var_list;
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// If we have any args to the variable command, we will make
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// variable objects from them...
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for (idx = 0; (name_cstr = command.GetArgumentAtIndex(idx)) != NULL; ++idx)
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{
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if (m_option_variable.use_regex)
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{
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const size_t regex_start_index = regex_var_list.GetSize();
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RegularExpression regex (name_cstr);
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if (regex.Compile(name_cstr))
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{
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size_t num_matches = 0;
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const size_t num_new_regex_vars = variable_list->AppendVariablesIfUnique(regex,
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regex_var_list,
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num_matches);
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if (num_new_regex_vars > 0)
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{
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for (size_t regex_idx = regex_start_index, end_index = regex_var_list.GetSize();
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regex_idx < end_index;
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++regex_idx)
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{
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var_sp = regex_var_list.GetVariableAtIndex (regex_idx);
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if (var_sp)
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{
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valobj_sp = frame->GetValueObjectForFrameVariable (var_sp, m_varobj_options.use_dynamic);
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if (valobj_sp)
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{
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// if (format != eFormatDefault)
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// valobj_sp->SetFormat (format);
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if (m_option_variable.show_decl && var_sp->GetDeclaration ().GetFile())
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{
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bool show_fullpaths = false;
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bool show_module = true;
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if (var_sp->DumpDeclaration(&s, show_fullpaths, show_module))
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s.PutCString (": ");
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}
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valobj_sp->Dump(result.GetOutputStream(),options);
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}
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}
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}
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}
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else if (num_matches == 0)
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{
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result.GetErrorStream().Printf ("error: no variables matched the regular expression '%s'.\n", name_cstr);
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}
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}
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else
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{
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char regex_error[1024];
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if (regex.GetErrorAsCString(regex_error, sizeof(regex_error)))
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result.GetErrorStream().Printf ("error: %s\n", regex_error);
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else
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result.GetErrorStream().Printf ("error: unknown regex error when compiling '%s'\n", name_cstr);
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}
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}
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else // No regex, either exact variable names or variable expressions.
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{
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Error error;
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uint32_t expr_path_options = StackFrame::eExpressionPathOptionCheckPtrVsMember |
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StackFrame::eExpressionPathOptionsAllowDirectIVarAccess;
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lldb::VariableSP var_sp;
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valobj_sp = frame->GetValueForVariableExpressionPath (name_cstr,
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m_varobj_options.use_dynamic,
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expr_path_options,
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var_sp,
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error);
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if (valobj_sp)
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{
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// if (format != eFormatDefault)
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// valobj_sp->SetFormat (format);
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if (m_option_variable.show_decl && var_sp && var_sp->GetDeclaration ().GetFile())
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{
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var_sp->GetDeclaration ().DumpStopContext (&s, false);
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s.PutCString (": ");
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}
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options.SetFormat(format);
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Stream &output_stream = result.GetOutputStream();
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options.SetRootValueObjectName(valobj_sp->GetParent() ? name_cstr : NULL);
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valobj_sp->Dump(output_stream,options);
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}
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else
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{
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const char *error_cstr = error.AsCString(NULL);
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if (error_cstr)
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result.GetErrorStream().Printf("error: %s\n", error_cstr);
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else
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result.GetErrorStream().Printf ("error: unable to find any variable expression path that matches '%s'\n", name_cstr);
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}
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}
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}
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}
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else // No command arg specified. Use variable_list, instead.
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{
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const size_t num_variables = variable_list->GetSize();
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if (num_variables > 0)
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{
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for (size_t i=0; i<num_variables; i++)
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{
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var_sp = variable_list->GetVariableAtIndex(i);
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bool dump_variable = true;
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std::string scope_string;
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switch (var_sp->GetScope())
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{
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case eValueTypeVariableGlobal:
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dump_variable = m_option_variable.show_globals;
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if (dump_variable && m_option_variable.show_scope)
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scope_string = "GLOBAL: ";
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break;
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case eValueTypeVariableStatic:
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dump_variable = m_option_variable.show_globals;
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|
if (dump_variable && m_option_variable.show_scope)
|
|
scope_string = "STATIC: ";
|
|
break;
|
|
|
|
case eValueTypeVariableArgument:
|
|
dump_variable = m_option_variable.show_args;
|
|
if (dump_variable && m_option_variable.show_scope)
|
|
scope_string = " ARG: ";
|
|
break;
|
|
|
|
case eValueTypeVariableLocal:
|
|
dump_variable = m_option_variable.show_locals;
|
|
if (dump_variable && m_option_variable.show_scope)
|
|
scope_string = " LOCAL: ";
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (dump_variable)
|
|
{
|
|
// Use the variable object code to make sure we are
|
|
// using the same APIs as the public API will be
|
|
// using...
|
|
valobj_sp = frame->GetValueObjectForFrameVariable (var_sp,
|
|
m_varobj_options.use_dynamic);
|
|
if (valobj_sp)
|
|
{
|
|
// if (format != eFormatDefault)
|
|
// valobj_sp->SetFormat (format);
|
|
|
|
// When dumping all variables, don't print any variables
|
|
// that are not in scope to avoid extra unneeded output
|
|
if (valobj_sp->IsInScope ())
|
|
{
|
|
if (false == valobj_sp->GetTargetSP()->GetDisplayRuntimeSupportValues() &&
|
|
true == valobj_sp->IsRuntimeSupportValue())
|
|
continue;
|
|
|
|
if (!scope_string.empty())
|
|
s.PutCString(scope_string.c_str());
|
|
|
|
if (m_option_variable.show_decl && var_sp->GetDeclaration ().GetFile())
|
|
{
|
|
var_sp->GetDeclaration ().DumpStopContext (&s, false);
|
|
s.PutCString (": ");
|
|
}
|
|
|
|
options.SetFormat(format);
|
|
options.SetRootValueObjectName(name_cstr);
|
|
valobj_sp->Dump(result.GetOutputStream(),options);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
}
|
|
|
|
if (m_interpreter.TruncationWarningNecessary())
|
|
{
|
|
result.GetOutputStream().Printf(m_interpreter.TruncationWarningText(),
|
|
m_cmd_name.c_str());
|
|
m_interpreter.TruncationWarningGiven();
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
protected:
|
|
|
|
OptionGroupOptions m_option_group;
|
|
OptionGroupVariable m_option_variable;
|
|
OptionGroupFormat m_option_format;
|
|
OptionGroupValueObjectDisplay m_varobj_options;
|
|
};
|
|
|
|
|
|
#pragma mark CommandObjectMultiwordFrame
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectMultiwordFrame
|
|
//-------------------------------------------------------------------------
|
|
|
|
CommandObjectMultiwordFrame::CommandObjectMultiwordFrame (CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"frame",
|
|
"A set of commands for operating on the current thread's frames.",
|
|
"frame <subcommand> [<subcommand-options>]")
|
|
{
|
|
LoadSubCommand ("info", CommandObjectSP (new CommandObjectFrameInfo (interpreter)));
|
|
LoadSubCommand ("select", CommandObjectSP (new CommandObjectFrameSelect (interpreter)));
|
|
LoadSubCommand ("variable", CommandObjectSP (new CommandObjectFrameVariable (interpreter)));
|
|
}
|
|
|
|
CommandObjectMultiwordFrame::~CommandObjectMultiwordFrame ()
|
|
{
|
|
}
|
|
|