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// Copyright 2016 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.analysis;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.events.Location;
import com.google.devtools.build.lib.packages.NativeInfo;
import com.google.devtools.build.lib.packages.NativeProvider;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.skylarkbuildapi.TemplateVariableInfoApi;
import com.google.devtools.build.lib.syntax.Environment;
import com.google.devtools.build.lib.syntax.EvalException;
import com.google.devtools.build.lib.syntax.FunctionSignature;
import com.google.devtools.build.lib.syntax.SkylarkDict;
import com.google.devtools.build.lib.syntax.SkylarkType;
import java.util.Map;
/** Provides access to make variables from the current fragments. */
@Immutable
@AutoCodec
public final class TemplateVariableInfo extends NativeInfo implements TemplateVariableInfoApi {
public static final String SKYLARK_NAME = "TemplateVariableInfo";
private static final FunctionSignature.WithValues<Object, SkylarkType> SIGNATURE =
FunctionSignature.WithValues.create(
FunctionSignature.of(/*numMandatory=*/ 1, "vars"),
/*defaultValues=*/ null,
/*types=*/ ImmutableList.<SkylarkType>of(SkylarkType.DICT));
public static final NativeProvider<TemplateVariableInfo> PROVIDER =
new NativeProvider<TemplateVariableInfo>(
TemplateVariableInfo.class, SKYLARK_NAME, SIGNATURE) {
@Override
protected TemplateVariableInfo createInstanceFromSkylark(
Object[] args, Environment env, Location loc) throws EvalException {
Map<String, String> vars =
SkylarkDict.castSkylarkDictOrNoneToDict(args[0], String.class, String.class, "vars");
return new TemplateVariableInfo(ImmutableMap.copyOf(vars), location);
}
};
private final ImmutableMap<String, String> variables;
@AutoCodec.Instantiator
public TemplateVariableInfo(ImmutableMap<String, String> variables, Location location) {
super(PROVIDER, ImmutableMap.of(), location);
this.variables = variables;
}
@Override
public ImmutableMap<String, String> getVariables() {
return variables;
}
@Override
public boolean equals(Object other) {
return other == this;
}
@Override
public int hashCode() {
return System.identityHashCode(this);
}
}
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