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|
%global _empty_manifest_terminate_build 0
Name: python-pybison
Version: 0.6.3
Release: 1
Summary: Python bindings for bison/flex parser engine
License: GPLv2
URL: https://github.com/lukeparser/pybison
Source0: https://mirrors.nju.edu.cn/pypi/web/packages/72/40/1f908ae261b650b45192d92c738d412ca86ebbabc46fa555b1380b0e67ae/pybison-0.6.3.tar.gz
%description
# PyBison
[](https://pypi.org/project/pybison)
[](https://pypi.org/project/pybison/#files)
[](https://github.com/lukeparser/pybison/actions)
Welcome to PyBison!
Bringing **GNU Bison/Flex**'s raw speed and power to Python
## What is PyBison?
PyBison is a framework which effectively 'wraps' **Bison** and **Flex into** a Python class structure.
You define a parser class, define tokens and precedences as attributes, and parse targets as methods with rules in the docstrings, then instantiate and run.
Black Magick happens in the background, whereupon you get callbacks each time `yyparse()` resolves a parse target.
## Install
Now, **install pybison** with:
```bash
pip install pybison
```
The following command will verify if the installation succeeded:
```bash
python -c "import bison"
```
## There are already parsers for Python. Why re-invent the wheel?
I looked at all the Python-based parsing frameworks.
IMO, the best one was **PLY** - a pure-python *lexx/yacc* implementation (which I have borrowed from heavily in designing PyBison's OO model).
But PLY suffers some major limitations:
- usage of 'named groups' regular expressions in the lexer creates a hard limit of 100 tokens - not enough to comfortably handle major languages
- pure-python implementation is a convenience, but incurs a cruel performance penalty
- the parser engine is SLR, not full LALR(1)
The other frameworks utilise a fiddly script syntax -
## How do I use this?
Refer to the [examples](https://github.com/lukeparser/pybison/tree/master/examples) and the [docs](https://github.com/lukeparser/pybison/tree/master/doc) for usage.
## Development
You will need:
- [Python](https://www.python.org/), with development headers and libraries
- [pip](https://pypi.org/project/pip/)
- [GNU bison](https://www.gnu.org/software/bison/)
- [flex](https://github.com/westes/flex)
- A standard C compiler and linker
We assume that Python, pip and a C compiler is already installed.
### Dependencies
First, install the dependencies `bison` and `flex`.
**Arch Linux**
```bash
sudo pacman -S bison flex
```
**Ubuntu**
```bash
sudo apt-get install bison flex
```
**Windows**
With [Chocolatey](https://community.chocolatey.org/), you can install the packages as follows:
```bash
choco install winflexbison3
```
Additionally, if a C compiler is needed, [mingw](https://osdn.net/projects/mingw/) can be installed with Chocolatey as well.
```bash
choco install mingw
```
### Debugging
See the short introduction into [debugging](debugging/README.md).
## Collaborators
- PyBison was designed and written by [David McNab <david@freenet.org.nz>](http://freenet.mcnabhosting.com/python/pybison/)
- [smvv](https://github.com/smvv)
- [habibutsu](https://github.com/habibutsu)
- [thisiscam](https://github.com/thisiscam)
- [eugeneai](https://github.com/eugenai)
- [csarn](https://github.com/csarn)
- [sbrodehl](https://github.com/sbrodehl)
- [da-h](https://github.com/da-h)
%package -n python3-pybison
Summary: Python bindings for bison/flex parser engine
Provides: python-pybison
BuildRequires: python3-devel
BuildRequires: python3-setuptools
BuildRequires: python3-pip
BuildRequires: python3-cffi
BuildRequires: gcc
BuildRequires: gdb
%description -n python3-pybison
# PyBison
[](https://pypi.org/project/pybison)
[](https://pypi.org/project/pybison/#files)
[](https://github.com/lukeparser/pybison/actions)
Welcome to PyBison!
Bringing **GNU Bison/Flex**'s raw speed and power to Python
## What is PyBison?
PyBison is a framework which effectively 'wraps' **Bison** and **Flex into** a Python class structure.
You define a parser class, define tokens and precedences as attributes, and parse targets as methods with rules in the docstrings, then instantiate and run.
Black Magick happens in the background, whereupon you get callbacks each time `yyparse()` resolves a parse target.
## Install
Now, **install pybison** with:
```bash
pip install pybison
```
The following command will verify if the installation succeeded:
```bash
python -c "import bison"
```
## There are already parsers for Python. Why re-invent the wheel?
I looked at all the Python-based parsing frameworks.
IMO, the best one was **PLY** - a pure-python *lexx/yacc* implementation (which I have borrowed from heavily in designing PyBison's OO model).
But PLY suffers some major limitations:
- usage of 'named groups' regular expressions in the lexer creates a hard limit of 100 tokens - not enough to comfortably handle major languages
- pure-python implementation is a convenience, but incurs a cruel performance penalty
- the parser engine is SLR, not full LALR(1)
The other frameworks utilise a fiddly script syntax -
## How do I use this?
Refer to the [examples](https://github.com/lukeparser/pybison/tree/master/examples) and the [docs](https://github.com/lukeparser/pybison/tree/master/doc) for usage.
## Development
You will need:
- [Python](https://www.python.org/), with development headers and libraries
- [pip](https://pypi.org/project/pip/)
- [GNU bison](https://www.gnu.org/software/bison/)
- [flex](https://github.com/westes/flex)
- A standard C compiler and linker
We assume that Python, pip and a C compiler is already installed.
### Dependencies
First, install the dependencies `bison` and `flex`.
**Arch Linux**
```bash
sudo pacman -S bison flex
```
**Ubuntu**
```bash
sudo apt-get install bison flex
```
**Windows**
With [Chocolatey](https://community.chocolatey.org/), you can install the packages as follows:
```bash
choco install winflexbison3
```
Additionally, if a C compiler is needed, [mingw](https://osdn.net/projects/mingw/) can be installed with Chocolatey as well.
```bash
choco install mingw
```
### Debugging
See the short introduction into [debugging](debugging/README.md).
## Collaborators
- PyBison was designed and written by [David McNab <david@freenet.org.nz>](http://freenet.mcnabhosting.com/python/pybison/)
- [smvv](https://github.com/smvv)
- [habibutsu](https://github.com/habibutsu)
- [thisiscam](https://github.com/thisiscam)
- [eugeneai](https://github.com/eugenai)
- [csarn](https://github.com/csarn)
- [sbrodehl](https://github.com/sbrodehl)
- [da-h](https://github.com/da-h)
%package help
Summary: Development documents and examples for pybison
Provides: python3-pybison-doc
%description help
# PyBison
[](https://pypi.org/project/pybison)
[](https://pypi.org/project/pybison/#files)
[](https://github.com/lukeparser/pybison/actions)
Welcome to PyBison!
Bringing **GNU Bison/Flex**'s raw speed and power to Python
## What is PyBison?
PyBison is a framework which effectively 'wraps' **Bison** and **Flex into** a Python class structure.
You define a parser class, define tokens and precedences as attributes, and parse targets as methods with rules in the docstrings, then instantiate and run.
Black Magick happens in the background, whereupon you get callbacks each time `yyparse()` resolves a parse target.
## Install
Now, **install pybison** with:
```bash
pip install pybison
```
The following command will verify if the installation succeeded:
```bash
python -c "import bison"
```
## There are already parsers for Python. Why re-invent the wheel?
I looked at all the Python-based parsing frameworks.
IMO, the best one was **PLY** - a pure-python *lexx/yacc* implementation (which I have borrowed from heavily in designing PyBison's OO model).
But PLY suffers some major limitations:
- usage of 'named groups' regular expressions in the lexer creates a hard limit of 100 tokens - not enough to comfortably handle major languages
- pure-python implementation is a convenience, but incurs a cruel performance penalty
- the parser engine is SLR, not full LALR(1)
The other frameworks utilise a fiddly script syntax -
## How do I use this?
Refer to the [examples](https://github.com/lukeparser/pybison/tree/master/examples) and the [docs](https://github.com/lukeparser/pybison/tree/master/doc) for usage.
## Development
You will need:
- [Python](https://www.python.org/), with development headers and libraries
- [pip](https://pypi.org/project/pip/)
- [GNU bison](https://www.gnu.org/software/bison/)
- [flex](https://github.com/westes/flex)
- A standard C compiler and linker
We assume that Python, pip and a C compiler is already installed.
### Dependencies
First, install the dependencies `bison` and `flex`.
**Arch Linux**
```bash
sudo pacman -S bison flex
```
**Ubuntu**
```bash
sudo apt-get install bison flex
```
**Windows**
With [Chocolatey](https://community.chocolatey.org/), you can install the packages as follows:
```bash
choco install winflexbison3
```
Additionally, if a C compiler is needed, [mingw](https://osdn.net/projects/mingw/) can be installed with Chocolatey as well.
```bash
choco install mingw
```
### Debugging
See the short introduction into [debugging](debugging/README.md).
## Collaborators
- PyBison was designed and written by [David McNab <david@freenet.org.nz>](http://freenet.mcnabhosting.com/python/pybison/)
- [smvv](https://github.com/smvv)
- [habibutsu](https://github.com/habibutsu)
- [thisiscam](https://github.com/thisiscam)
- [eugeneai](https://github.com/eugenai)
- [csarn](https://github.com/csarn)
- [sbrodehl](https://github.com/sbrodehl)
- [da-h](https://github.com/da-h)
%prep
%autosetup -n pybison-0.6.3
%build
%py3_build
%install
%py3_install
install -d -m755 %{buildroot}/%{_pkgdocdir}
if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
pushd %{buildroot}
if [ -d usr/lib ]; then
find usr/lib -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/lib64 ]; then
find usr/lib64 -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/bin ]; then
find usr/bin -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/sbin ]; then
find usr/sbin -type f -printf "/%h/%f\n" >> filelist.lst
fi
touch doclist.lst
if [ -d usr/share/man ]; then
find usr/share/man -type f -printf "/%h/%f.gz\n" >> doclist.lst
fi
popd
mv %{buildroot}/filelist.lst .
mv %{buildroot}/doclist.lst .
%files -n python3-pybison -f filelist.lst
%dir %{python3_sitearch}/*
%files help -f doclist.lst
%{_docdir}/*
%changelog
* Tue Apr 25 2023 Python_Bot <Python_Bot@openeuler.org> - 0.6.3-1
- Package Spec generated
|
