Use backed by go-jsonnet for python extension

This commit is contained in:
Alexander Petrov 2019-11-08 16:55:12 +00:00 committed by Stanisław Barzowski
parent 0959f85501
commit 441e4cc581
6 changed files with 168 additions and 0 deletions

5
.gitignore vendored
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@ -1,8 +1,13 @@
*~
*.prof
*.so
*.a
.*.swp
*.pyc
coverage.out
build/
dist/
jsonnet.egg-info/
/bazel-bin
/bazel-genfiles
/bazel-go-jsonnet

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@ -12,6 +12,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
go_library(
name = "go_default_library",
srcs = [
"handles.go",
"c-bindings.go",
"internal.h",
"json.cpp",

0
python/__init__.py Normal file
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97
python/_jsonnet_test.py Normal file
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@ -0,0 +1,97 @@
# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import unittest
import _jsonnet
# Returns content if worked, None if file not found, or throws an exception
def try_path(dir, rel):
if not rel:
raise RuntimeError('Got invalid filename (empty string).')
if rel[0] == '/':
full_path = rel
else:
full_path = dir + rel
if full_path[-1] == '/':
raise RuntimeError('Attempted to import a directory')
if not os.path.isfile(full_path):
return full_path, None
with open(full_path) as f:
return full_path, f.read()
def import_callback(dir, rel):
full_path, content = try_path(dir, rel)
if content:
return full_path, content
raise RuntimeError('File not found')
# Test native extensions
def concat(a, b):
return a + b
def return_types():
return {
'a': [1, 2, 3, None, []],
'b': 1.0,
'c': True,
'd': None,
'e': {
'x': 1,
'y': 2,
'z': ['foo']
},
}
native_callbacks = {
'concat': (('a', 'b'), concat),
'return_types': ((), return_types),
}
class JsonnetTests(unittest.TestCase):
def setUp(self):
self.input_filename = os.path.join(
os.path.dirname(__file__),
"test.jsonnet",
)
self.expected_str = "true\n"
with open(self.input_filename, "r") as infile:
self.input_snippet = infile.read()
def test_evaluate_file(self):
json_str = _jsonnet.evaluate_file(
self.input_filename,
import_callback=import_callback,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, self.expected_str)
def test_evaluate_snippet(self):
json_str = _jsonnet.evaluate_snippet(
"snippet",
self.input_snippet,
import_callback=import_callback,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, self.expected_str)
if __name__ == '__main__':
unittest.main()

5
python/test.jsonnet Normal file
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@ -0,0 +1,5 @@
std.assertEqual(({ x: 1, y: self.x } { x: 2 }).y, 2) &&
std.assertEqual(std.native("concat")("foo", "bar"), "foobar") &&
std.assertEqual(std.native("return_types")(), {a: [1, 2, 3, null, []], b: 1, c: true, d: null, e: {x: 1, y: 2, z: ["foo"]}}) &&
true

60
setup.py Normal file
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# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from setuptools import setup
from setuptools import Extension
from setuptools.command.build_ext import build_ext as BuildExt
from subprocess import Popen, PIPE
DIR = os.path.abspath(os.path.dirname(__file__))
LIB_DIR = DIR + '/c-bindings'
MODULE_SOURCES = ['cpp-jsonnet/python/_jsonnet.c']
def get_version():
# TODO think about it (how to get the version)
return '0.14.0'
class BuildJsonnetExt(BuildExt):
def run(self):
p = Popen(['go', 'build', '-o', 'libgojsonnet.a', '-buildmode=c-archive'], cwd=LIB_DIR, stdout=PIPE)
p.wait()
if p.returncode != 0:
raise Exception('Could not build libgojsonnet.so')
BuildExt.run(self)
jsonnet_ext = Extension(
'_jsonnet',
sources=MODULE_SOURCES,
extra_objects=[
LIB_DIR + '/libgojsonnet.a',
],
include_dirs = ['cpp-jsonnet/include'],
language='c++',
)
setup(name='jsonnet',
url='https://jsonnet.org',
description='Python bindings for Jsonnet - The data templating language ',
author='David Cunningham',
author_email='dcunnin@google.com',
version=get_version(),
cmdclass={
'build_ext': BuildJsonnetExt,
},
ext_modules=[jsonnet_ext],
test_suite="python._jsonnet_test",
)