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//===-- OptionGroupFormat.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/Interpreter/OptionGroupFormat.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/ArchSpec.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/Utils.h"
using namespace lldb;
using namespace lldb_private;
OptionGroupFormat::OptionGroupFormat (lldb::Format default_format,
uint64_t default_byte_size,
uint64_t default_count) :
m_format (default_format, default_format),
m_byte_size (default_byte_size, default_byte_size),
m_count (default_count, default_count),
m_prev_gdb_format('x'),
m_prev_gdb_size('w')
{
}
OptionGroupFormat::~OptionGroupFormat ()
{
}
static OptionDefinition
g_option_table[] =
{
{ LLDB_OPT_SET_1, false, "format" ,'f', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeFormat , "Specify a format to be used for display."},
{ LLDB_OPT_SET_2, false, "gdb-format",'G', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeGDBFormat, "Specify a format using a GDB format specifier string."},
{ LLDB_OPT_SET_3, false, "size" ,'s', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeByteSize , "The size in bytes to use when displaying with the selected format."},
{ LLDB_OPT_SET_4, false, "count" ,'c', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCount , "The number of total items to display."},
};
uint32_t
OptionGroupFormat::GetNumDefinitions ()
{
if (m_byte_size.GetDefaultValue() < UINT64_MAX)
{
if (m_count.GetDefaultValue() < UINT64_MAX)
return 4;
else
return 3;
}
return 2;
}
const OptionDefinition *
OptionGroupFormat::GetDefinitions ()
{
return g_option_table;
}
Error
OptionGroupFormat::SetOptionValue (CommandInterpreter &interpreter,
uint32_t option_idx,
const char *option_arg)
{
Error error;
const int short_option = g_option_table[option_idx].short_option;
switch (short_option)
{
case 'f':
error = m_format.SetValueFromString (option_arg);
break;
case 'c':
if (m_count.GetDefaultValue() == 0)
{
error.SetErrorString ("--count option is disabled");
}
else
{
error = m_count.SetValueFromString (option_arg);
if (m_count.GetCurrentValue() == 0)
error.SetErrorStringWithFormat("invalid --count option value '%s'", option_arg);
}
break;
case 's':
if (m_byte_size.GetDefaultValue() == 0)
{
error.SetErrorString ("--size option is disabled");
}
else
{
error = m_byte_size.SetValueFromString (option_arg);
if (m_byte_size.GetCurrentValue() == 0)
error.SetErrorStringWithFormat("invalid --size option value '%s'", option_arg);
}
break;
case 'G':
{
char *end = nullptr;
const char *gdb_format_cstr = option_arg;
uint64_t count = 0;
if (::isdigit (gdb_format_cstr[0]))
{
count = strtoull (gdb_format_cstr, &end, 0);
if (option_arg != end)
gdb_format_cstr = end; // We have a valid count, advance the string position
else
count = 0;
}
Format format = eFormatDefault;
uint32_t byte_size = 0;
while (ParserGDBFormatLetter (interpreter, gdb_format_cstr[0], format, byte_size))
{
++gdb_format_cstr;
}
// We the first character of the "gdb_format_cstr" is not the
// NULL terminator, we didn't consume the entire string and
// something is wrong. Also, if none of the format, size or count
// was specified correctly, then abort.
if (gdb_format_cstr[0] || (format == eFormatInvalid && byte_size == 0 && count == 0))
{
// Nothing got set correctly
error.SetErrorStringWithFormat ("invalid gdb format string '%s'", option_arg);
return error;
}
// At least one of the format, size or count was set correctly.
// Anything that wasn't set correctly should be set to the
// previous default
if (format == eFormatInvalid)
ParserGDBFormatLetter (interpreter, m_prev_gdb_format, format, byte_size);
const bool byte_size_enabled = m_byte_size.GetDefaultValue() < UINT64_MAX;
const bool count_enabled = m_count.GetDefaultValue() < UINT64_MAX;
if (byte_size_enabled)
{
// Byte size is enabled
if (byte_size == 0)
ParserGDBFormatLetter (interpreter, m_prev_gdb_size, format, byte_size);
}
else
{
// Byte size is disabled, make sure it wasn't specified
// but if this is an address, it's actually necessary to
// specify one so don't error out
if (byte_size > 0 && format != lldb::eFormatAddressInfo)
{
error.SetErrorString ("this command doesn't support specifying a byte size");
return error;
}
}
if (count_enabled)
{
// Count is enabled and was not set, set it to the default for gdb format statements (which is 1).
if (count == 0)
count = 1;
}
else
{
// Count is disabled, make sure it wasn't specified
if (count > 0)
{
error.SetErrorString ("this command doesn't support specifying a count");
return error;
}
}
m_format.SetCurrentValue (format);
m_format.SetOptionWasSet ();
if (byte_size_enabled)
{
m_byte_size.SetCurrentValue (byte_size);
m_byte_size.SetOptionWasSet ();
}
if (count_enabled)
{
m_count.SetCurrentValue(count);
m_count.SetOptionWasSet ();
}
}
break;
default:
error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option);
break;
}
return error;
}
bool
OptionGroupFormat::ParserGDBFormatLetter (CommandInterpreter &interpreter, char format_letter, Format &format, uint32_t &byte_size)
{
m_has_gdb_format = true;
switch (format_letter)
{
case 'o': format = eFormatOctal; m_prev_gdb_format = format_letter; return true;
case 'x': format = eFormatHex; m_prev_gdb_format = format_letter; return true;
case 'd': format = eFormatDecimal; m_prev_gdb_format = format_letter; return true;
case 'u': format = eFormatUnsigned; m_prev_gdb_format = format_letter; return true;
case 't': format = eFormatBinary; m_prev_gdb_format = format_letter; return true;
case 'f': format = eFormatFloat; m_prev_gdb_format = format_letter; return true;
case 'a': format = eFormatAddressInfo;
{
ExecutionContext exe_ctx(interpreter.GetExecutionContext());
Target *target = exe_ctx.GetTargetPtr();
if (target)
byte_size = target->GetArchitecture().GetAddressByteSize();
m_prev_gdb_format = format_letter;
return true;
}
case 'i': format = eFormatInstruction; m_prev_gdb_format = format_letter; return true;
case 'c': format = eFormatChar; m_prev_gdb_format = format_letter; return true;
case 's': format = eFormatCString; m_prev_gdb_format = format_letter; return true;
case 'T': format = eFormatOSType; m_prev_gdb_format = format_letter; return true;
case 'A': format = eFormatHexFloat; m_prev_gdb_format = format_letter; return true;
case 'b': byte_size = 1; m_prev_gdb_size = format_letter; return true;
case 'h': byte_size = 2; m_prev_gdb_size = format_letter; return true;
case 'w': byte_size = 4; m_prev_gdb_size = format_letter; return true;
case 'g': byte_size = 8; m_prev_gdb_size = format_letter; return true;
default: break;
}
return false;
}
void
OptionGroupFormat::OptionParsingStarting (CommandInterpreter &interpreter)
{
m_format.Clear();
m_byte_size.Clear();
m_count.Clear();
m_has_gdb_format = false;
}
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