我广泛使用boost::mpl::string<...>
类型......足以让真正帮助调试,以便在gdb
中打印漂亮的类型。
所以...而不是gdb
显示当前的个别(多字符文字)组件......
boost::mpl::string<1668248165, 778856802, 778858343, ..., ..., 0, 0, 0, 0, 0, 0>
它会显示等效的字符串值而不是......
boost::mpl::string<"The way out is through">
我已经看到gdb
宏和python脚本用于在gdb
中打印漂亮的STL容器,但我找不到一个用于打印漂亮的boost::mpl
字符串。任何人都可以帮忙吗?
更新:我添加了 +100 赏金......我正在寻找一种利用最新GDB支持通过python进行漂亮打印的解决方案(如描述here用于STL容器。)
答案 0 :(得分:7)
以下是我使用Boost-Pretty-Printer(https://github.com/ruediger/Boost-Pretty-Printer/wiki)的解决方案:
文件mpl_printers.py:
import printers
import re
import string
import struct
@printers.register_pretty_printer
class BoostMplString:
"Pretty Printer for boost::mpl::string"
regex = re.compile('^boost::mpl::string<(.*)>$')
@printers.static
def supports(typename):
return BoostMplString.regex.search(typename)
def __init__(self, typename, value):
self.typename = typename
self.value = value
def to_string(self):
s = ''
try:
m = BoostMplString.regex.match(self.typename)
args = string.split(m.group(1), ', ')
for packed in args:
i = int(packed)
if i == 0:
break
r = ''
while i != 0:
i, c = divmod(i, 0x100)
r += chr(c)
s += r[::-1]
except RuntimeError:
s = '[Exception]'
return '(boost::mpl::string) %s' % (s)
def register_boost_mpl_printers(obj):
"Register Boost Pretty Printers."
pass
文件register_printers.gdb:
python
# Add the following line in your .gdbinit:
# source /usr/local/share/gdb/register_printers.gdb
import sys
sys.path.insert(0, '/usr/local/share/gdb/python')
# You might have these, too
# from libstdcxx.v6.printers import register_libstdcxx_printers
from boost.printers import register_boost_printers
from boost.mpl_printers import register_boost_mpl_printers
# register_libstdcxx_printers(None)
register_boost_printers(None)
register_boost_mpl_printers(None)
end
(您可以选择不同的目录)
测试:
#include <boost/mpl/string.hpp>
int main() {
boost::mpl::string<'hell','o wo','rld'> s;
return 0;
}
gdb测试-ex'b main'-ex'r'-ex'p s'-ex'c'-ex'q'
$ 1 =(boost :: mpl :: string)hello world