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// Copyright 2014 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.objc;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.collect.nestedset.Order;
/**
* Contains information about storyboards for a single target. This does not include information
* about the transitive closure. A storyboard:
* <ul>
* <li>Is a single file with an extension of {@code .storyboard} in its uncompiled, checked-in
* form.
* <li>Can be in a localized {@code .lproj} directory, including {@code Base.lproj}.
* <li>Compiles with {@code ibtool} to a directory with extension {@code .storyboardc} (note the
* added "c")
* </ul>
*
* <p>The {@link NestedSet}s stored in this class are only one level deep, and do not include the
* storyboards in the transitive closure. This is to facilitate structural sharing between copies
* of the sequences - the output zips can be added transitively to the inputs of the merge bundle
* action, as well as to the files to build set, and only one instance of the sequence exists for
* each set.
*/
final class Storyboards {
private final NestedSet<Artifact> outputZips;
private final NestedSet<Artifact> inputs;
private Storyboards(NestedSet<Artifact> outputZips, NestedSet<Artifact> inputs) {
this.outputZips = outputZips;
this.inputs = inputs;
}
public NestedSet<Artifact> getOutputZips() {
return outputZips;
}
public NestedSet<Artifact> getInputs() {
return inputs;
}
static Storyboards empty() {
return new Storyboards(
NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER),
NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER));
}
/**
* Generates a set of new instances given the raw storyboard inputs.
* @param inputs the {@code .storyboard} files.
* @param intermediateArtifacts the object used to determine the output zip {@link Artifact}s.
*/
static Storyboards fromInputs(
Iterable<Artifact> inputs, IntermediateArtifacts intermediateArtifacts) {
NestedSetBuilder<Artifact> outputZips = NestedSetBuilder.stableOrder();
for (Artifact input : inputs) {
outputZips.add(intermediateArtifacts.compiledStoryboardZip(input));
}
return new Storyboards(outputZips.build(), NestedSetBuilder.wrap(Order.STABLE_ORDER, inputs));
}
}
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