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|
%global _empty_manifest_terminate_build 0
Name: python-parglare
Version: 0.16.1
Release: 1
Summary: A pure Python Scannerless LR/GLR parser
License: MIT
URL: https://github.com/igordejanovic/parglare
Source0: https://mirrors.nju.edu.cn/pypi/web/packages/d2/5e/5d3f57260093df923f8dfe2ef2dc661404e949203ae2a78cd09bb055ea26/parglare-0.16.1.tar.gz
BuildArch: noarch
Requires: python3-click
Requires: python3-wheel
Requires: python3-mkdocs
Requires: python3-mike
Requires: python3-twine
Requires: python3-flake8
Requires: python3-coverage
Requires: python3-coveralls
Requires: python3-pytest
%description
This is just a small example to get the general idea. This example shows how to
parse and evaluate expressions with 5 operations with different priority and
associativity. Evaluation is done using semantic/reduction actions.
The whole expression evaluator is done in under 30 lines of code!
from parglare import Parser, Grammar
grammar = r"""
E: E '+' E {left, 1}
| E '-' E {left, 1}
| E '*' E {left, 2}
| E '/' E {left, 2}
| E '^' E {right, 3}
| '(' E ')'
| number;
terminals
number: /\d+(\.\d+)?/;
"""
actions = {
"E": [lambda _, n: n[0] + n[2],
lambda _, n: n[0] - n[2],
lambda _, n: n[0] * n[2],
lambda _, n: n[0] / n[2],
lambda _, n: n[0] ** n[2],
lambda _, n: n[1],
lambda _, n: n[0]],
"number": lambda _, value: float(value),
}
g = Grammar.from_string(grammar)
parser = Parser(g, debug=True, actions=actions)
result = parser.parse("34 + 4.6 / 2 * 4^2^2 + 78")
print("Result = ", result)
# Output
# -- Debugging/tracing output with detailed info about grammar, productions,
# -- terminals and nonterminals, DFA states, parsing progress,
# -- and at the end of the output:
# Result = 700.8
%package -n python3-parglare
Summary: A pure Python Scannerless LR/GLR parser
Provides: python-parglare
BuildRequires: python3-devel
BuildRequires: python3-setuptools
BuildRequires: python3-pip
%description -n python3-parglare
This is just a small example to get the general idea. This example shows how to
parse and evaluate expressions with 5 operations with different priority and
associativity. Evaluation is done using semantic/reduction actions.
The whole expression evaluator is done in under 30 lines of code!
from parglare import Parser, Grammar
grammar = r"""
E: E '+' E {left, 1}
| E '-' E {left, 1}
| E '*' E {left, 2}
| E '/' E {left, 2}
| E '^' E {right, 3}
| '(' E ')'
| number;
terminals
number: /\d+(\.\d+)?/;
"""
actions = {
"E": [lambda _, n: n[0] + n[2],
lambda _, n: n[0] - n[2],
lambda _, n: n[0] * n[2],
lambda _, n: n[0] / n[2],
lambda _, n: n[0] ** n[2],
lambda _, n: n[1],
lambda _, n: n[0]],
"number": lambda _, value: float(value),
}
g = Grammar.from_string(grammar)
parser = Parser(g, debug=True, actions=actions)
result = parser.parse("34 + 4.6 / 2 * 4^2^2 + 78")
print("Result = ", result)
# Output
# -- Debugging/tracing output with detailed info about grammar, productions,
# -- terminals and nonterminals, DFA states, parsing progress,
# -- and at the end of the output:
# Result = 700.8
%package help
Summary: Development documents and examples for parglare
Provides: python3-parglare-doc
%description help
This is just a small example to get the general idea. This example shows how to
parse and evaluate expressions with 5 operations with different priority and
associativity. Evaluation is done using semantic/reduction actions.
The whole expression evaluator is done in under 30 lines of code!
from parglare import Parser, Grammar
grammar = r"""
E: E '+' E {left, 1}
| E '-' E {left, 1}
| E '*' E {left, 2}
| E '/' E {left, 2}
| E '^' E {right, 3}
| '(' E ')'
| number;
terminals
number: /\d+(\.\d+)?/;
"""
actions = {
"E": [lambda _, n: n[0] + n[2],
lambda _, n: n[0] - n[2],
lambda _, n: n[0] * n[2],
lambda _, n: n[0] / n[2],
lambda _, n: n[0] ** n[2],
lambda _, n: n[1],
lambda _, n: n[0]],
"number": lambda _, value: float(value),
}
g = Grammar.from_string(grammar)
parser = Parser(g, debug=True, actions=actions)
result = parser.parse("34 + 4.6 / 2 * 4^2^2 + 78")
print("Result = ", result)
# Output
# -- Debugging/tracing output with detailed info about grammar, productions,
# -- terminals and nonterminals, DFA states, parsing progress,
# -- and at the end of the output:
# Result = 700.8
%prep
%autosetup -n parglare-0.16.1
%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-parglare -f filelist.lst
%dir %{python3_sitelib}/*
%files help -f doclist.lst
%{_docdir}/*
%changelog
* Tue May 30 2023 Python_Bot <Python_Bot@openeuler.org> - 0.16.1-1
- Package Spec generated
|
