llvm-project/lldb/source/Commands/CommandObjectFrame.cpp

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//===-- CommandObjectFrame.cpp ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CommandObjectFrame.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Core/Timer.h"
#include "lldb/Core/Value.h"
#include "lldb/Core/ValueObject.h"
#include "lldb/Core/ValueObjectVariable.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Symbol/ClangASTType.h"
#include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/Type.h"
#include "lldb/Symbol/Variable.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/Target.h"
#include "CommandObjectThread.h"
using namespace lldb;
using namespace lldb_private;
#pragma mark CommandObjectFrameInfo
//-------------------------------------------------------------------------
// CommandObjectFrameInfo
//-------------------------------------------------------------------------
class CommandObjectFrameInfo : public CommandObject
{
public:
CommandObjectFrameInfo (CommandInterpreter &interpreter) :
CommandObject (interpreter,
"frame info",
"List information about the currently selected frame in the current thread.",
"frame info",
eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
{
}
~CommandObjectFrameInfo ()
{
}
bool
Execute (Args& command,
CommandReturnObject &result)
{
ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext());
if (exe_ctx.frame)
{
There are now to new "settings set" variables that live in each debugger instance: settings set frame-format <string> settings set thread-format <string> This allows users to control the information that is seen when dumping threads and frames. The default values are set such that they do what they used to do prior to changing over the the user defined formats. This allows users with terminals that can display color to make different items different colors using the escape control codes. A few alias examples that will colorize your thread and frame prompts are: settings set frame-format 'frame #${frame.index}: \033[0;33m${frame.pc}\033[0m{ \033[1;4;36m${module.file.basename}\033[0;36m ${function.name}{${function.pc-offset}}\033[0m}{ \033[0;35mat \033[1;35m${line.file.basename}:${line.number}}\033[0m\n' settings set thread-format 'thread #${thread.index}: \033[1;33mtid\033[0;33m = ${thread.id}\033[0m{, \033[0;33m${frame.pc}\033[0m}{ \033[1;4;36m${module.file.basename}\033[0;36m ${function.name}{${function.pc-offset}}\033[0m}{, \033[1;35mstop reason\033[0;35m = ${thread.stop-reason}\033[0m}{, \033[1;36mname = \033[0;36m${thread.name}\033[0m}{, \033[1;32mqueue = \033[0;32m${thread.queue}}\033[0m\n' A quick web search for "colorize terminal output" should allow you to see what you can do to make your output look like you want it. The "settings set" commands above can of course be added to your ~/.lldbinit file for permanent use. Changed the pure virtual void ExecutionContextScope::Calculate (ExecutionContext&); To: void ExecutionContextScope::CalculateExecutionContext (ExecutionContext&); I did this because this is a class that anything in the execution context heirarchy inherits from and "target->Calculate (exe_ctx)" didn't always tell you what it was really trying to do unless you look at the parameter. llvm-svn: 115485
2010-10-04 09:05:56 +08:00
exe_ctx.frame->DumpUsingSettingsFormat (&result.GetOutputStream());
result.GetOutputStream().EOL();
result.SetStatus (eReturnStatusSuccessFinishResult);
}
else
{
result.AppendError ("no current frame");
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
#pragma mark CommandObjectFrameSelect
//-------------------------------------------------------------------------
// CommandObjectFrameSelect
//-------------------------------------------------------------------------
class CommandObjectFrameSelect : public CommandObject
{
public:
class CommandOptions : public Options
{
public:
CommandOptions () :
Options()
{
ResetOptionValues ();
}
virtual
~CommandOptions ()
{
}
virtual Error
SetOptionValue (int option_idx, const char *option_arg)
{
Error error;
bool success = false;
char short_option = (char) m_getopt_table[option_idx].val;
switch (short_option)
{
case 'r':
relative_frame_offset = Args::StringToSInt32 (option_arg, INT32_MIN, 0, &success);
if (!success)
error.SetErrorStringWithFormat ("invalid frame offset argument '%s'.\n", option_arg);
break;
default:
("Invalid short option character '%c'.\n", short_option);
break;
}
return error;
}
void
ResetOptionValues ()
{
Options::ResetOptionValues();
relative_frame_offset = INT32_MIN;
}
const lldb::OptionDefinition*
GetDefinitions ()
{
return g_option_table;
}
// Options table: Required for subclasses of Options.
static lldb::OptionDefinition g_option_table[];
int32_t relative_frame_offset;
};
CommandObjectFrameSelect (CommandInterpreter &interpreter) :
CommandObject (interpreter,
"frame select",
"Select a frame by index from within the current thread and make it the current frame.",
NULL,
eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
{
CommandArgumentEntry arg;
CommandArgumentData index_arg;
// Define the first (and only) variant of this arg.
index_arg.arg_type = eArgTypeFrameIndex;
index_arg.arg_repetition = eArgRepeatOptional;
// There is only one variant this argument could be; put it into the argument entry.
arg.push_back (index_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back (arg);
}
~CommandObjectFrameSelect ()
{
}
virtual
Options *
GetOptions ()
{
return &m_options;
}
bool
Execute (Args& command,
CommandReturnObject &result)
{
ExecutionContext exe_ctx (m_interpreter.GetDebugger().GetExecutionContext());
if (exe_ctx.thread)
{
const uint32_t num_frames = exe_ctx.thread->GetStackFrameCount();
uint32_t frame_idx = UINT32_MAX;
if (m_options.relative_frame_offset != INT32_MIN)
{
// The one and only argument is a signed relative frame index
frame_idx = exe_ctx.thread->GetSelectedFrameIndex ();
if (frame_idx == UINT32_MAX)
frame_idx = 0;
if (m_options.relative_frame_offset < 0)
{
if (frame_idx >= -m_options.relative_frame_offset)
frame_idx += m_options.relative_frame_offset;
else
frame_idx = 0;
}
else if (m_options.relative_frame_offset > 0)
{
if (num_frames - frame_idx > m_options.relative_frame_offset)
frame_idx += m_options.relative_frame_offset;
else
frame_idx = num_frames - 1;
}
}
else
{
if (command.GetArgumentCount() == 1)
{
const char *frame_idx_cstr = command.GetArgumentAtIndex(0);
frame_idx = Args::StringToUInt32 (frame_idx_cstr, UINT32_MAX, 0);
}
else
{
result.AppendError ("invalid arguments.\n");
m_options.GenerateOptionUsage (m_interpreter, result.GetErrorStream(), this);
}
}
if (frame_idx < num_frames)
{
exe_ctx.thread->SetSelectedFrameByIndex (frame_idx);
exe_ctx.frame = exe_ctx.thread->GetSelectedFrame ().get();
if (exe_ctx.frame)
{
bool already_shown = false;
SymbolContext frame_sc(exe_ctx.frame->GetSymbolContext(eSymbolContextLineEntry));
if (m_interpreter.GetDebugger().GetUseExternalEditor() && frame_sc.line_entry.file && frame_sc.line_entry.line != 0)
{
already_shown = Host::OpenFileInExternalEditor (frame_sc.line_entry.file, frame_sc.line_entry.line);
}
if (DisplayFrameForExecutionContext (exe_ctx.thread,
exe_ctx.frame,
m_interpreter,
result.GetOutputStream(),
true,
!already_shown,
3,
3))
{
result.SetStatus (eReturnStatusSuccessFinishResult);
return result.Succeeded();
}
}
}
result.AppendErrorWithFormat ("Frame index (%u) out of range.\n", frame_idx);
}
else
{
result.AppendError ("no current thread");
}
result.SetStatus (eReturnStatusFailed);
return false;
}
protected:
CommandOptions m_options;
};
lldb::OptionDefinition
CommandObjectFrameSelect::CommandOptions::g_option_table[] =
{
{ LLDB_OPT_SET_1, false, "relative", 'r', required_argument, NULL, 0, eArgTypeOffset, "A relative frame index offset from the current frame index."},
{ 0, false, NULL, 0, 0, NULL, NULL, eArgTypeNone, NULL }
};
#pragma mark CommandObjectFrameVariable
//----------------------------------------------------------------------
// List images with associated information
//----------------------------------------------------------------------
class CommandObjectFrameVariable : public CommandObject
{
public:
class CommandOptions : public Options
{
public:
CommandOptions () :
Options()
{
ResetOptionValues ();
}
virtual
~CommandOptions ()
{
}
virtual Error
SetOptionValue (int option_idx, const char *option_arg)
{
Error error;
bool success;
char short_option = (char) m_getopt_table[option_idx].val;
switch (short_option)
{
case 'o': use_objc = true; break;
case 'r': use_regex = true; break;
case 'a': show_args = false; break;
case 'l': show_locals = false; break;
case 'g': show_globals = true; break;
case 't': show_types = true; break;
case 'y': show_summary = false; break;
case 'L': show_location= true; break;
case 'c': show_decl = true; break;
case 'D': debug = true; break;
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
case 'f': flat_output = true; break;
case 'd':
max_depth = Args::StringToUInt32 (option_arg, UINT32_MAX, 0, &success);
if (!success)
error.SetErrorStringWithFormat("Invalid max depth '%s'.\n", option_arg);
break;
case 'p':
ptr_depth = Args::StringToUInt32 (option_arg, 0, 0, &success);
if (!success)
error.SetErrorStringWithFormat("Invalid pointer depth '%s'.\n", option_arg);
break;
case 'G':
globals.push_back(ConstString (option_arg));
break;
case 's':
show_scope = true;
break;
default:
error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
break;
}
return error;
}
void
ResetOptionValues ()
{
Options::ResetOptionValues();
use_objc = false;
use_regex = false;
show_args = true;
show_locals = true;
show_globals = false;
show_types = false;
show_scope = false;
show_summary = true;
show_location = false;
show_decl = false;
debug = false;
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
flat_output = false;
max_depth = UINT32_MAX;
ptr_depth = 0;
globals.clear();
}
const lldb::OptionDefinition*
GetDefinitions ()
{
return g_option_table;
}
// Options table: Required for subclasses of Options.
static lldb::OptionDefinition g_option_table[];
bool use_objc:1,
use_regex:1,
show_args:1,
show_locals:1,
show_globals:1,
show_types:1,
show_scope:1,
show_summary:1,
show_location:1,
show_decl:1,
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
debug:1,
flat_output:1;
uint32_t max_depth; // The depth to print when dumping concrete (not pointers) aggreate values
uint32_t ptr_depth; // The default depth that is dumped when we find pointers
std::vector<ConstString> globals;
// Instance variables to hold the values for command options.
};
CommandObjectFrameVariable (CommandInterpreter &interpreter) :
CommandObject (interpreter,
"frame variable",
"Show frame variables. All argument and local variables "
"that are in scope will be shown when no arguments are given. "
"If any arguments are specified, they can be names of "
"argument, local, file static and file global variables. "
"Children of aggregate variables can be specified such as "
"'var->child.x'.",
NULL)
{
CommandArgumentEntry arg;
CommandArgumentData var_name_arg;
// Define the first (and only) variant of this arg.
var_name_arg.arg_type = eArgTypeVarName;
var_name_arg.arg_repetition = eArgRepeatStar;
// There is only one variant this argument could be; put it into the argument entry.
arg.push_back (var_name_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back (arg);
}
virtual
~CommandObjectFrameVariable ()
{
}
virtual
Options *
GetOptions ()
{
return &m_options;
}
virtual bool
Execute
(
Args& command,
CommandReturnObject &result
)
{
ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext());
if (exe_ctx.frame == NULL)
{
result.AppendError ("you must be stopped in a valid stack frame to view frame variables.");
result.SetStatus (eReturnStatusFailed);
return false;
}
else
{
Stream &s = result.GetOutputStream();
bool get_file_globals = true;
VariableList *variable_list = exe_ctx.frame->GetVariableList (get_file_globals);
VariableSP var_sp;
ValueObjectSP valobj_sp;
//ValueObjectList &valobj_list = exe_ctx.frame->GetValueObjectList();
const char *name_cstr = NULL;
size_t idx;
if (!m_options.globals.empty())
{
uint32_t fail_count = 0;
if (exe_ctx.target)
{
const size_t num_globals = m_options.globals.size();
for (idx = 0; idx < num_globals; ++idx)
{
VariableList global_var_list;
const uint32_t num_matching_globals = exe_ctx.target->GetImages().FindGlobalVariables (m_options.globals[idx], true, UINT32_MAX, global_var_list);
if (num_matching_globals == 0)
{
++fail_count;
result.GetErrorStream().Printf ("error: can't find global variable '%s'\n", m_options.globals[idx].AsCString());
}
else
{
for (uint32_t global_idx=0; global_idx<num_matching_globals; ++global_idx)
{
var_sp = global_var_list.GetVariableAtIndex(global_idx);
if (var_sp)
{
valobj_sp = exe_ctx.frame->GetValueObjectForFrameVariable (var_sp);
if (!valobj_sp)
valobj_sp = exe_ctx.frame->TrackGlobalVariable (var_sp);
if (valobj_sp)
{
if (m_options.show_decl && var_sp->GetDeclaration ().GetFile())
{
var_sp->GetDeclaration ().DumpStopContext (&s, false);
s.PutCString (": ");
}
ValueObject::DumpValueObject (result.GetOutputStream(),
exe_ctx.frame,
valobj_sp.get(),
name_cstr,
m_options.ptr_depth,
0,
m_options.max_depth,
m_options.show_types,
m_options.show_location,
m_options.use_objc,
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
false,
m_options.flat_output);
}
}
}
}
}
}
if (fail_count)
result.SetStatus (eReturnStatusFailed);
}
else if (variable_list)
{
if (command.GetArgumentCount() > 0)
{
VariableList regex_var_list;
// If we have any args to the variable command, we will make
// variable objects from them...
for (idx = 0; (name_cstr = command.GetArgumentAtIndex(idx)) != NULL; ++idx)
{
uint32_t ptr_depth = m_options.ptr_depth;
if (m_options.use_regex)
{
const uint32_t regex_start_index = regex_var_list.GetSize();
RegularExpression regex (name_cstr);
if (regex.Compile(name_cstr))
{
size_t num_matches = 0;
const size_t num_new_regex_vars = variable_list->AppendVariablesIfUnique(regex, regex_var_list, num_matches);
if (num_new_regex_vars > 0)
{
for (uint32_t regex_idx = regex_start_index, end_index = regex_var_list.GetSize();
regex_idx < end_index;
++regex_idx)
{
var_sp = regex_var_list.GetVariableAtIndex (regex_idx);
if (var_sp)
{
valobj_sp = exe_ctx.frame->GetValueObjectForFrameVariable (var_sp);
if (valobj_sp)
{
if (m_options.show_decl && var_sp->GetDeclaration ().GetFile())
{
var_sp->GetDeclaration ().DumpStopContext (&s, false);
s.PutCString (": ");
}
ValueObject::DumpValueObject (result.GetOutputStream(),
exe_ctx.frame,
valobj_sp.get(),
var_sp->GetName().AsCString(),
m_options.ptr_depth,
0,
m_options.max_depth,
m_options.show_types,
m_options.show_location,
m_options.use_objc,
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
false,
m_options.flat_output);
}
}
}
}
else if (num_matches == 0)
{
result.GetErrorStream().Printf ("error: no variables matched the regular expression '%s'.\n", name_cstr);
}
}
else
{
char regex_error[1024];
if (regex.GetErrorAsCString(regex_error, sizeof(regex_error)))
result.GetErrorStream().Printf ("error: %s\n", regex_error);
else
result.GetErrorStream().Printf ("error: unkown regex error when compiling '%s'\n", name_cstr);
}
}
else
{
// If first character is a '*', then show pointer contents
if (name_cstr[0] == '*')
{
++ptr_depth;
name_cstr++; // Skip the '*'
}
std::string var_path (name_cstr);
size_t separator_idx = var_path.find_first_of(".-[");
ConstString name_const_string;
if (separator_idx == std::string::npos)
name_const_string.SetCString (var_path.c_str());
else
name_const_string.SetCStringWithLength (var_path.c_str(), separator_idx);
var_sp = variable_list->FindVariable(name_const_string);
if (var_sp)
{
valobj_sp = exe_ctx.frame->GetValueObjectForFrameVariable (var_sp);
var_path.erase (0, name_const_string.GetLength ());
// We are dumping at least one child
while (separator_idx != std::string::npos)
{
// Calculate the next separator index ahead of time
ValueObjectSP child_valobj_sp;
const char separator_type = var_path[0];
switch (separator_type)
{
case '-':
if (var_path.size() >= 2 && var_path[1] != '>')
{
result.GetErrorStream().Printf ("error: invalid character in variable path starting at '%s'\n",
var_path.c_str());
var_path.clear();
valobj_sp.reset();
break;
}
var_path.erase (0, 1); // Remove the '-'
// Fall through
case '.':
{
var_path.erase (0, 1); // Remove the '.' or '>'
separator_idx = var_path.find_first_of(".-[");
ConstString child_name;
if (separator_idx == std::string::npos)
child_name.SetCString (var_path.c_str());
else
child_name.SetCStringWithLength(var_path.c_str(), separator_idx);
child_valobj_sp = valobj_sp->GetChildMemberWithName (child_name, true);
if (!child_valobj_sp)
{
result.GetErrorStream().Printf ("error: can't find child of '%s' named '%s'\n",
valobj_sp->GetName().AsCString(),
child_name.GetCString());
var_path.clear();
valobj_sp.reset();
break;
}
// Remove the child name from the path
var_path.erase(0, child_name.GetLength());
}
break;
case '[':
// Array member access, or treating pointer as an array
if (var_path.size() > 2) // Need at least two brackets and a number
{
char *end = NULL;
int32_t child_index = ::strtol (&var_path[1], &end, 0);
if (end && *end == ']')
{
if (valobj_sp->IsPointerType ())
{
child_valobj_sp = valobj_sp->GetSyntheticArrayMemberFromPointer (child_index, true);
}
else
{
child_valobj_sp = valobj_sp->GetChildAtIndex (child_index, true);
}
if (!child_valobj_sp)
{
result.GetErrorStream().Printf ("error: invalid array index %u in '%s'\n",
child_index,
valobj_sp->GetName().AsCString());
var_path.clear();
valobj_sp.reset();
break;
}
// Erase the array member specification '[%i]' where %i is the array index
var_path.erase(0, (end - var_path.c_str()) + 1);
separator_idx = var_path.find_first_of(".-[");
// Break out early from the switch since we were able to find the child member
break;
}
}
result.GetErrorStream().Printf ("error: invalid array member specification for '%s' starting at '%s'\n",
valobj_sp->GetName().AsCString(),
var_path.c_str());
var_path.clear();
valobj_sp.reset();
break;
break;
default:
result.GetErrorStream().Printf ("error: invalid character in variable path starting at '%s'\n",
var_path.c_str());
var_path.clear();
valobj_sp.reset();
separator_idx = std::string::npos;
break;
}
if (child_valobj_sp)
valobj_sp = child_valobj_sp;
if (var_path.empty())
break;
}
if (valobj_sp)
{
if (m_options.show_decl && var_sp->GetDeclaration ().GetFile())
{
var_sp->GetDeclaration ().DumpStopContext (&s, false);
s.PutCString (": ");
}
ValueObject::DumpValueObject (result.GetOutputStream(),
exe_ctx.frame,
valobj_sp.get(),
name_cstr,
ptr_depth,
0,
m_options.max_depth,
m_options.show_types,
m_options.show_location,
m_options.use_objc,
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
false,
m_options.flat_output);
}
}
else
{
result.GetErrorStream().Printf ("error: unable to find any variables named '%s'\n", name_cstr);
var_path.clear();
}
}
}
}
else
{
const uint32_t num_variables = variable_list->GetSize();
if (num_variables > 0)
{
for (uint32_t i=0; i<num_variables; i++)
{
VariableSP var_sp (variable_list->GetVariableAtIndex(i));
bool dump_variable = true;
switch (var_sp->GetScope())
{
case eValueTypeVariableGlobal:
dump_variable = m_options.show_globals;
if (dump_variable && m_options.show_scope)
s.PutCString("GLOBAL: ");
break;
case eValueTypeVariableStatic:
dump_variable = m_options.show_globals;
if (dump_variable && m_options.show_scope)
s.PutCString("STATIC: ");
break;
case eValueTypeVariableArgument:
dump_variable = m_options.show_args;
if (dump_variable && m_options.show_scope)
s.PutCString(" ARG: ");
break;
case eValueTypeVariableLocal:
dump_variable = m_options.show_locals;
if (dump_variable && m_options.show_scope)
s.PutCString(" LOCAL: ");
break;
default:
break;
}
if (dump_variable)
{
// Use the variable object code to make sure we are
// using the same APIs as the the public API will be
// using...
valobj_sp = exe_ctx.frame->GetValueObjectForFrameVariable (var_sp);
if (valobj_sp)
{
// When dumping all variables, don't print any variables
// that are not in scope to avoid extra unneeded output
if (valobj_sp->IsInScope (exe_ctx.frame))
{
if (m_options.show_decl && var_sp->GetDeclaration ().GetFile())
{
var_sp->GetDeclaration ().DumpStopContext (&s, false);
s.PutCString (": ");
}
ValueObject::DumpValueObject (result.GetOutputStream(),
exe_ctx.frame,
valobj_sp.get(),
name_cstr,
m_options.ptr_depth,
0,
m_options.max_depth,
m_options.show_types,
m_options.show_location,
m_options.use_objc,
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
false,
m_options.flat_output);
}
}
}
}
}
}
result.SetStatus (eReturnStatusSuccessFinishResult);
}
}
return result.Succeeded();
}
protected:
CommandOptions m_options;
};
lldb::OptionDefinition
CommandObjectFrameVariable::CommandOptions::g_option_table[] =
{
{ LLDB_OPT_SET_1, false, "debug", 'D', no_argument, NULL, 0, eArgTypeNone, "Enable verbose debug information."},
{ LLDB_OPT_SET_1, false, "depth", 'd', required_argument, NULL, 0, eArgTypeCount, "Set the max recurse depth when dumping aggregate types (default is infinity)."},
{ LLDB_OPT_SET_1, false, "show-globals",'g', no_argument, NULL, 0, eArgTypeNone, "Show the current frame source file global and static variables."},
{ LLDB_OPT_SET_1, false, "find-global",'G', required_argument, NULL, 0, eArgTypeVarName, "Find a global variable by name (which might not be in the current stack frame source file)."},
{ LLDB_OPT_SET_1, false, "location", 'L', no_argument, NULL, 0, eArgTypeNone, "Show variable location information."},
{ LLDB_OPT_SET_1, false, "show-declaration", 'c', no_argument, NULL, 0, eArgTypeNone, "Show variable declaration information (source file and line where the variable was declared)."},
{ LLDB_OPT_SET_1, false, "no-args", 'a', no_argument, NULL, 0, eArgTypeNone, "Omit function arguments."},
{ LLDB_OPT_SET_1, false, "no-locals", 'l', no_argument, NULL, 0, eArgTypeNone, "Omit local variables."},
{ LLDB_OPT_SET_1, false, "show-types", 't', no_argument, NULL, 0, eArgTypeNone, "Show variable types when dumping values."},
{ LLDB_OPT_SET_1, false, "no-summary", 'y', no_argument, NULL, 0, eArgTypeNone, "Omit summary information."},
{ LLDB_OPT_SET_1, false, "scope", 's', no_argument, NULL, 0, eArgTypeNone, "Show variable scope (argument, local, global, static)."},
{ LLDB_OPT_SET_1, false, "objc", 'o', no_argument, NULL, 0, eArgTypeNone, "When looking up a variable by name, print as an Objective-C object."},
{ LLDB_OPT_SET_1, false, "ptr-depth", 'p', required_argument, NULL, 0, eArgTypeCount, "The number of pointers to be traversed when dumping values (default is zero)."},
{ LLDB_OPT_SET_1, false, "regex", 'r', no_argument, NULL, 0, eArgTypeRegularExpression, "The <variable-name> argument for name lookups are regular expressions."},
Fixed an expression parsing issue where if you were stopped somewhere without debug information and you evaluated an expression, a crash would occur as a result of an unchecked pointer. Added the ability to get the expression path for a ValueObject. For a rectangle point child "x" the expression path would be something like: "rect.top_left.x". This will allow GUI and command lines to get ahold of the expression path for a value object without having to explicitly know about the hierarchy. This means the ValueObject base class now has a "ValueObject *m_parent;" member. All ValueObject subclasses now correctly track their lineage and are able to provide value expression paths as well. Added a new "--flat" option to the "frame variable" to allow for flat variable output. An example of the current and new outputs: (lldb) frame variable argc = 1 argv = 0x00007fff5fbffe80 pt = { x = 2 y = 3 } rect = { bottom_left = { x = 1 y = 2 } top_right = { x = 3 y = 4 } } (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffe80 pt.x = 2 pt.y = 3 rect.bottom_left.x = 1 rect.bottom_left.y = 2 rect.top_right.x = 3 rect.top_right.y = 4 As you can see when there is a lot of hierarchy it can help flatten things out. Also if you want to use a member in an expression, you can copy the text from the "--flat" output and not have to piece it together manually. This can help when you want to use parts of the STL in expressions: (lldb) frame variable --flat argc = 1 argv = 0x00007fff5fbffea8 hello_world._M_dataplus._M_p = 0x0000000000000000 (lldb) expr hello_world._M_dataplus._M_p[0] == '\0' llvm-svn: 116532
2010-10-15 06:52:14 +08:00
{ LLDB_OPT_SET_1, false, "flat", 'f', no_argument, NULL, 0, eArgTypeNone, "Display results in a flat format that uses expression paths for each variable or member."},
{ 0, false, NULL, 0, 0, NULL, NULL, eArgTypeNone, NULL }
};
#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 ()
{
}