| // Copyright 2019 The Bazel Authors. 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. |
| |
| package com.google.devtools.build.lib.rules.python; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.collect.nestedset.Depset; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.packages.Info; |
| import com.google.devtools.build.lib.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException; |
| import com.google.devtools.build.lib.packages.StarlarkInfo; |
| import com.google.devtools.build.lib.packages.StarlarkProviderWrapper; |
| import net.starlark.java.eval.EvalException; |
| |
| /** Instance of the provider type for the Python rules. */ |
| @VisibleForTesting |
| public final class PyInfo { |
| private static final BuiltinPyInfoProvider BUILTIN_PROVIDER = new BuiltinPyInfoProvider(); |
| private static final RulesPythonPyInfoProvider RULES_PYTHON_PROVIDER = |
| new RulesPythonPyInfoProvider(); |
| |
| private final StarlarkInfo info; |
| |
| private PyInfo(StarlarkInfo info) { |
| this.info = info; |
| } |
| |
| public static PyInfo fromTarget(ConfiguredTarget target) throws RuleErrorException { |
| PyInfo provider = target.get(RULES_PYTHON_PROVIDER); |
| if (provider != null) { |
| return provider; |
| } |
| provider = target.get(BUILTIN_PROVIDER); |
| if (provider != null) { |
| return provider; |
| } |
| throw new IllegalStateException(String.format("Unable to find PyInfo provider in %s", target)); |
| } |
| |
| public NestedSet<Artifact> getTransitiveSourcesSet() throws EvalException { |
| Object value = info.getValue("transitive_sources"); |
| return Depset.cast(value, Artifact.class, "transitive_sources"); |
| } |
| |
| public boolean getUsesSharedLibraries() throws EvalException { |
| return info.getValue("uses_shared_libraries", Boolean.class); |
| } |
| |
| public NestedSet<String> getImportsSet() throws EvalException { |
| Object value = info.getValue("imports"); |
| return Depset.cast(value, String.class, "imports"); |
| } |
| |
| public boolean getHasPy2OnlySources() throws EvalException { |
| return info.getValue("has_py2_only_sources", Boolean.class); |
| } |
| |
| public boolean getHasPy3OnlySources() throws EvalException { |
| return info.getValue("has_py3_only_sources", Boolean.class); |
| } |
| |
| private static class BaseProvider extends StarlarkProviderWrapper<PyInfo> { |
| private BaseProvider(String bzlLabel) { |
| super(Label.parseCanonicalUnchecked(bzlLabel), "PyInfo"); |
| } |
| |
| @Override |
| public PyInfo wrap(Info value) { |
| return new PyInfo((StarlarkInfo) value); |
| } |
| } |
| |
| /** The PyInfo provider type object for the builtin provider. */ |
| public static class BuiltinPyInfoProvider extends BaseProvider { |
| private BuiltinPyInfoProvider() { |
| super("@_builtins//:common/python/providers.bzl"); |
| } |
| } |
| |
| /** The PyInfo provider type object for the rules_python provider. */ |
| public static class RulesPythonPyInfoProvider extends BaseProvider { |
| private RulesPythonPyInfoProvider() { |
| super("//third_party/bazel_rules/rules_python/python/private/common:providers.bzl"); |
| } |
| } |
| } |