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# Itanium Demangler
The *Python Itanium Demangler* is a pure Python parser for the [Itanium C++ ABI symbol mangling language][manglang]. Note that MSVC mangling language is not supported.
This demangler generates an abstract syntax tree from mangled symbols, which can be used for directly extracting type information, as opposed to having to interpret the C++ source code corresponding to the demangled symbol
There is also a built-in AST stringifier, so the demangler can be used as a replacement for `c++filt` or for formatting backtraces.
[manglang]: https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
## Requirements
The demangler runs on Python 2.7 and 3.3+ and has no dependencies.
## Installation
Installing via PyPI:
pip install itanium_demangler
Using a local repository for development:
git clone https://github.com/whitequark/python-itanium_demangler
cd python-itanium_demangler
python setup.py develop --user
## Usage
```python
from itanium_demangler import parse as demangle
ast = demangle("_ZN5boost6chrono24process_system_cpu_clock3nowEv")
print(repr(ast))
# <FuncNode func <Node qual_name (<Node name 'boost'>, <Node name 'chrono'>, <Node name 'process_system_cpu_clock'>, <Node name 'now'>)> (<Node builtin 'void'>,) None>
print(ast)
# boost::chrono::process_system_cpu_clock::now()
```
## Future considerations
A similar (i.e. also parsing to an AST) implementation of a demangler for the MSVC mangling language would be useful to have.
## License
[0-clause BSD](LICENSE-0BSD.txt)
SPDX canonical text (0BSD)
Copyright (C) YEAR by AUTHOR EMAIL
Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.