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// Copyright 2015 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.cpp;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.skylark.SkylarkApiProvider;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.skylarkbuildapi.cpp.CcSkylarkApiProviderApi;
import com.google.devtools.build.lib.vfs.PathFragment;
/**
* A class that exposes the C++ providers to Skylark. It is intended to provide a simple and stable
* interface for Skylark users.
*/
@AutoCodec
public final class CcSkylarkApiProvider extends SkylarkApiProvider
implements CcSkylarkApiProviderApi<Artifact> {
/** The name of the field in Skylark used to access this class. */
public static final String NAME = "cc";
@Override
public NestedSet<Artifact> getTransitiveHeaders() {
CcCompilationContext ccCompilationContext =
getInfo().get(CcCompilationInfo.PROVIDER).getCcCompilationContext();
return ccCompilationContext.getDeclaredIncludeSrcs();
}
@Override
public NestedSet<Artifact> getLibraries() {
NestedSetBuilder<Artifact> libs = NestedSetBuilder.linkOrder();
CcLinkingInfo ccLinkingInfo = getInfo().get(CcLinkingInfo.PROVIDER);
CcLinkParamsStore ccLinkParams =
ccLinkingInfo == null ? null : ccLinkingInfo.getCcLinkParamsStore();
if (ccLinkParams == null) {
return libs.build();
}
for (LinkerInput lib : ccLinkParams.getCcLinkParams(true, false).getLibraries()) {
libs.add(lib.getArtifact());
}
return libs.build();
}
@Override
public ImmutableList<String> getLinkopts() {
CcLinkingInfo ccLinkingInfo = getInfo().get(CcLinkingInfo.PROVIDER);
CcLinkParamsStore ccLinkParams =
ccLinkingInfo == null ? null : ccLinkingInfo.getCcLinkParamsStore();
if (ccLinkParams == null) {
return ImmutableList.of();
}
return ccLinkParams.getCcLinkParams(true, false).flattenedLinkopts();
}
@Override
public ImmutableList<String> getDefines() {
CcCompilationContext ccCompilationContext =
getInfo().get(CcCompilationInfo.PROVIDER).getCcCompilationContext();
return ccCompilationContext == null
? ImmutableList.<String>of()
: ccCompilationContext.getDefines();
}
@Override
public ImmutableList<String> getSystemIncludeDirs() {
CcCompilationContext ccCompilationContext =
getInfo().get(CcCompilationInfo.PROVIDER).getCcCompilationContext();
if (ccCompilationContext == null) {
return ImmutableList.of();
}
ImmutableList.Builder<String> builder = ImmutableList.builder();
for (PathFragment path : ccCompilationContext.getSystemIncludeDirs()) {
builder.add(path.getSafePathString());
}
return builder.build();
}
@Override
public ImmutableList<String> getIncludeDirs() {
CcCompilationContext ccCompilationContext =
getInfo().get(CcCompilationInfo.PROVIDER).getCcCompilationContext();
if (ccCompilationContext == null) {
return ImmutableList.of();
}
ImmutableList.Builder<String> builder = ImmutableList.builder();
for (PathFragment path : ccCompilationContext.getIncludeDirs()) {
builder.add(path.getSafePathString());
}
return builder.build();
}
@Override
public ImmutableList<String> getQuoteIncludeDirs() {
CcCompilationContext ccCompilationContext =
getInfo().get(CcCompilationInfo.PROVIDER).getCcCompilationContext();
if (ccCompilationContext == null) {
return ImmutableList.of();
}
ImmutableList.Builder<String> builder = ImmutableList.builder();
for (PathFragment path : ccCompilationContext.getQuoteIncludeDirs()) {
builder.add(path.getSafePathString());
}
return builder.build();
}
@Override
public ImmutableList<String> getCcFlags() {
CcCompilationContext ccCompilationContext =
getInfo().get(CcCompilationInfo.PROVIDER).getCcCompilationContext();
ImmutableList.Builder<String> options = ImmutableList.builder();
for (String define : ccCompilationContext.getDefines()) {
options.add("-D" + define);
}
for (PathFragment path : ccCompilationContext.getSystemIncludeDirs()) {
options.add("-isystem " + path.getSafePathString());
}
for (PathFragment path : ccCompilationContext.getIncludeDirs()) {
options.add("-I " + path.getSafePathString());
}
for (PathFragment path : ccCompilationContext.getQuoteIncludeDirs()) {
options.add("-iquote " + path.getSafePathString());
}
return options.build();
}
}
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