// 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.rules.objc;

import com.google.common.collect.Sets;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
import com.google.devtools.build.lib.rules.cpp.CcLibraryHelper;
import com.google.devtools.build.lib.rules.cpp.CcToolchainFeatures.FeatureConfiguration;
import com.google.devtools.build.lib.rules.cpp.CcToolchainProvider;
import com.google.devtools.build.lib.rules.objc.ObjcCommon.CompilationAttributes;

import java.util.Collection;

/**
 * Implementation for experimental_objc_library.
 */
public class ExperimentalObjcLibrary implements RuleConfiguredTargetFactory {

  @Override
  public ConfiguredTarget create(RuleContext ruleContext) throws InterruptedException {

    CompilationArtifacts compilationArtifacts =
        CompilationSupport.compilationArtifacts(ruleContext);
    CompilationAttributes compilationAttributes = new CompilationAttributes(ruleContext);

    ObjcCommon common = common(ruleContext, compilationAttributes, compilationArtifacts);

    CcToolchainProvider toolchain =
        ruleContext
            .getPrerequisite(":cc_toolchain", Mode.TARGET)
            .getProvider(CcToolchainProvider.class);
    FeatureConfiguration featureConfiguration = toolchain.getFeatures().getFeatureConfiguration();

    Collection<Artifact> sources = Sets.newHashSet(compilationArtifacts.getSrcs());
    Collection<Artifact> privateHdrs = Sets.newHashSet(compilationArtifacts.getPrivateHdrs());
    Collection<Artifact> publicHdrs = Sets.newHashSet(compilationAttributes.hdrs());

    CcLibraryHelper helper =
        new CcLibraryHelper(
                ruleContext,
                ObjcCppSemantics.INSTANCE,
                featureConfiguration,
                CcLibraryHelper.SourceCategory.CC_AND_OBJC)
            .addSources(sources)
            .addSources(privateHdrs)
            .enableCompileProviders()
            .addPublicHeaders(publicHdrs)
            .addDeps(ruleContext.getPrerequisites("deps", Mode.TARGET));

    CcLibraryHelper.Info info = helper.build();

    NestedSetBuilder<Artifact> filesToBuild =
        NestedSetBuilder.<Artifact>stableOrder().addAll(common.getCompiledArchive().asSet());

    return ObjcRuleClasses.ruleConfiguredTarget(ruleContext, filesToBuild.build())
        .addProviders(info.getProviders())
        .build();
  }

  private ObjcCommon common(
      RuleContext ruleContext,
      CompilationAttributes compilationAttributes,
      CompilationArtifacts compilationArtifacts) {
    return new ObjcCommon.Builder(ruleContext)
        .setCompilationAttributes(compilationAttributes)
        .setCompilationArtifacts(compilationArtifacts)
        .addDepObjcProviders(ruleContext.getPrerequisites("deps", Mode.TARGET, ObjcProvider.class))
        .build();
  }
}

@@ -1312,24 +1312,89 @@
 inProvider;%0A
+import com.google.devtools.build.lib.rules.cpp.PrecompiledFiles;%0A
 import com.g
@@ -1930,16 +1930,91 @@
 ontext);
+%0A    PrecompiledFiles precompiledFiles = new PrecompiledFiles(ruleContext);
 %0A%0A    Ob
@@ -3005,24 +3005,75 @@
 publicHdrs)%0A
+            .addPrecompiledFiles(precompiledFiles)%0A
             

Add cpp-style source processing to experimental_objc_library.