3aa97d0f5b
Classes are separated using YAML document separator (3 dashes). Empty documents are skipped. If the class doesn't have Namespace section corresponding section from the previous class in the same file is used. Thus it is possible to declare namespace prefixes once at the file header. Even if there are several classes in one file all of them are still required to be declared in manifest file (except for the DSL unit tests that don't have manifests) Change-Id: Ic8df487d8a7c327f085f9723c251e99fa998c481
81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
# Copyright (c) 2014 Mirantis Inc.
|
|
#
|
|
# 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 yaml
|
|
import yaml.composer
|
|
import yaml.constructor
|
|
|
|
from murano.dsl import dsl_types
|
|
from murano.dsl import helpers
|
|
from murano.dsl import yaql_expression
|
|
|
|
|
|
@helpers.memoize
|
|
def get_loader(version):
|
|
version = helpers.parse_version(version)
|
|
|
|
class MuranoPlDict(dict):
|
|
pass
|
|
|
|
class YaqlExpression(yaql_expression.YaqlExpression):
|
|
@staticmethod
|
|
def match(expr):
|
|
return yaql_expression.YaqlExpression.is_expression(expr, version)
|
|
|
|
def load(contents, file_id):
|
|
def build_position(node):
|
|
return dsl_types.ExpressionFilePosition(
|
|
file_id,
|
|
node.start_mark.line + 1,
|
|
node.start_mark.column + 1,
|
|
node.end_mark.line + 1,
|
|
node.end_mark.column + 1)
|
|
|
|
class MuranoPlYamlConstructor(yaml.constructor.Constructor):
|
|
def construct_yaml_map(self, node):
|
|
data = MuranoPlDict()
|
|
data.source_file_position = build_position(node)
|
|
yield data
|
|
value = self.construct_mapping(node)
|
|
data.update(value)
|
|
|
|
class YaqlYamlLoader(yaml.Loader, MuranoPlYamlConstructor):
|
|
pass
|
|
|
|
YaqlYamlLoader.add_constructor(
|
|
u'tag:yaml.org,2002:map',
|
|
MuranoPlYamlConstructor.construct_yaml_map)
|
|
|
|
# workaround for PyYAML bug: http://pyyaml.org/ticket/221
|
|
resolvers = {}
|
|
for k, v in yaml.Loader.yaml_implicit_resolvers.items():
|
|
resolvers[k] = v[:]
|
|
YaqlYamlLoader.yaml_implicit_resolvers = resolvers
|
|
|
|
def yaql_constructor(loader, node):
|
|
value = loader.construct_scalar(node)
|
|
result = yaql_expression.YaqlExpression(value, version)
|
|
result.source_file_position = build_position(node)
|
|
return result
|
|
|
|
YaqlYamlLoader.add_constructor(u'!yaql', yaql_constructor)
|
|
YaqlYamlLoader.add_implicit_resolver(u'!yaql', YaqlExpression, None)
|
|
return list(filter(
|
|
lambda t: t,
|
|
yaml.load_all(contents, Loader=YaqlYamlLoader))
|
|
)
|
|
|
|
return load
|