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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.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.actions.Artifact;
/**
* Artifacts related to compilation. Any rule containing compilable sources will create an instance
* of this class.
*/
final class CompilationArtifacts {
static class Builder {
// TODO(bazel-team): Should these be sets instead of just iterables?
private Iterable<Artifact> srcs = ImmutableList.of();
private Iterable<Artifact> nonArcSrcs = ImmutableList.of();
private Iterable<Artifact> additionalHdrs = ImmutableList.of();
private Iterable<Artifact> privateHdrs = ImmutableList.of();
private Iterable<Artifact> precompiledSrcs = ImmutableList.of();
private IntermediateArtifacts intermediateArtifacts;
Builder addSrcs(Iterable<Artifact> srcs) {
this.srcs = Iterables.concat(this.srcs, srcs);
return this;
}
Builder addNonArcSrcs(Iterable<Artifact> nonArcSrcs) {
this.nonArcSrcs = Iterables.concat(this.nonArcSrcs, nonArcSrcs);
return this;
}
/**
* Adds header artifacts that should be directly accessible to dependers, but aren't specified
* in the hdrs attribute. {@code additionalHdrs} should not be a {@link NestedSet}, as it will
* be flattened when added.
*/
Builder addAdditionalHdrs(Iterable<Artifact> additionalHdrs) {
this.additionalHdrs = Iterables.concat(this.additionalHdrs, additionalHdrs);
return this;
}
/**
* Adds header artifacts that should not be directly accessible to dependers.
* {@code privateHdrs} should not be a {@link NestedSet}, as it will be flattened when added.
*/
Builder addPrivateHdrs(Iterable<Artifact> privateHdrs) {
this.privateHdrs = Iterables.concat(this.privateHdrs, privateHdrs);
return this;
}
/**
* Adds precompiled sources (.o files).
*/
Builder addPrecompiledSrcs(Iterable<Artifact> precompiledSrcs) {
this.precompiledSrcs = Iterables.concat(this.precompiledSrcs, precompiledSrcs);
return this;
}
Builder setIntermediateArtifacts(IntermediateArtifacts intermediateArtifacts) {
Preconditions.checkState(this.intermediateArtifacts == null,
"intermediateArtifacts is already set to: %s", this.intermediateArtifacts);
this.intermediateArtifacts = intermediateArtifacts;
return this;
}
Builder addAllSources(CompilationArtifacts otherArtifacts) {
return this.addNonArcSrcs(otherArtifacts.getNonArcSrcs())
.addSrcs(otherArtifacts.getSrcs())
.addPrecompiledSrcs(otherArtifacts.getPrecompiledSrcs())
.addPrivateHdrs(otherArtifacts.getPrivateHdrs())
.addAdditionalHdrs(otherArtifacts.getAdditionalHdrs());
}
CompilationArtifacts build() {
Optional<Artifact> archive = Optional.absent();
if (!Iterables.isEmpty(srcs)
|| !Iterables.isEmpty(nonArcSrcs)
|| !Iterables.isEmpty(precompiledSrcs)) {
archive = Optional.of(intermediateArtifacts.archive());
}
return new CompilationArtifacts(
srcs, nonArcSrcs, additionalHdrs, privateHdrs, precompiledSrcs, archive);
}
}
private final Iterable<Artifact> srcs;
private final Iterable<Artifact> nonArcSrcs;
private final Optional<Artifact> archive;
private final Iterable<Artifact> additionalHdrs;
private final Iterable<Artifact> privateHdrs;
private final Iterable<Artifact> precompiledSrcs;
private CompilationArtifacts(
Iterable<Artifact> srcs,
Iterable<Artifact> nonArcSrcs,
Iterable<Artifact> additionalHdrs,
Iterable<Artifact> privateHdrs,
Iterable<Artifact> precompiledSrcs,
Optional<Artifact> archive) {
this.srcs = Preconditions.checkNotNull(srcs);
this.nonArcSrcs = Preconditions.checkNotNull(nonArcSrcs);
this.additionalHdrs = Preconditions.checkNotNull(additionalHdrs);
this.privateHdrs = Preconditions.checkNotNull(privateHdrs);
this.precompiledSrcs = Preconditions.checkNotNull(precompiledSrcs);
this.archive = Preconditions.checkNotNull(archive);
}
public Iterable<Artifact> getSrcs() {
return srcs;
}
public Iterable<Artifact> getNonArcSrcs() {
return nonArcSrcs;
}
/**
* Returns the public headers that aren't included in the hdrs attribute.
*/
public Iterable<Artifact> getAdditionalHdrs() {
return additionalHdrs;
}
/**
* Returns the private headers from the srcs attribute, which may by imported by any source or
* header in this target, but not by sources or headers of dependers.
*/
public Iterable<Artifact> getPrivateHdrs() {
return privateHdrs;
}
/**
* Returns .o files provided to the build directly as srcs.
*/
public Iterable<Artifact> getPrecompiledSrcs() {
return precompiledSrcs;
}
/**
* Returns the output archive library (.a) file created by combining object files of the srcs,
* non arc srcs, and precompiled srcs of this artifact collection. Returns absent if there
* are no such source files for which to create an archive library.
*/
public Optional<Artifact> getArchive() {
return archive;
}
}
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