C++: Introduce provider that wraps C++ compilation providers.

For now, only CcCompilationContextInfo is wrapped. CcCompilationContextInfo will be renamed CcCompilationContext since the *Info suffix is used for providers. This will be done in a follow-up CL.

RELNOTES:none
PiperOrigin-RevId: 191876504

1 files changed, 97 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCompilationInfo.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCompilationInfo.java
new file mode 100644
index 0000000000..cba5d39184
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCompilationInfo.java
@@ -0,0 +1,97 @@
+// 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.cpp;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.analysis.AnalysisUtils;
+import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
+import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
+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.skyframe.serialization.autocodec.AutoCodec.VisibleForSerialization;
+import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
+import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
+import com.google.devtools.build.lib.skylarkinterface.SkylarkModuleCategory;
+
+/** Wrapper for every C++ compilation provider. */
+@Immutable
+@AutoCodec
+@SkylarkModule(
+  name = "cc_compilation_info",
+  documented = false,
+  category = SkylarkModuleCategory.PROVIDER,
+  doc = "Wrapper for every C++ compilation provider"
+)
+public final class CcCompilationInfo extends NativeInfo {
+  public static final NativeProvider<CcCompilationInfo> PROVIDER =
+      new NativeProvider<CcCompilationInfo>(CcCompilationInfo.class, "CcCompilationInfo") {};
+
+  private final CcCompilationContextInfo ccCompilationContextInfo;
+
+  @AutoCodec.Instantiator
+  @VisibleForSerialization
+  CcCompilationInfo(CcCompilationContextInfo ccCompilationContextInfo) {
+    super(PROVIDER);
+    this.ccCompilationContextInfo = ccCompilationContextInfo;
+  }
+
+  @SkylarkCallable(
+    name = "cc_compilation_context_info",
+    structField = true,
+    allowReturnNones = true,
+    doc = "Returns compilation information for this C++ target."
+  )
+  public CcCompilationContextInfo getCcCompilationContextInfo() {
+    return ccCompilationContextInfo;
+  }
+
+  /** A Builder for {@link CcCompilationInfo}. */
+  public static class Builder {
+    CcCompilationContextInfo ccCompilationContextInfo;
+
+    public static CcCompilationInfo.Builder create() {
+      return new CcCompilationInfo.Builder();
+    }
+
+    public <P extends TransitiveInfoProvider> Builder setCcCompilationContextInfo(
+        CcCompilationContextInfo ccCompilationContextInfo) {
+      Preconditions.checkState(this.ccCompilationContextInfo == null);
+      this.ccCompilationContextInfo = ccCompilationContextInfo;
+      return this;
+    }
+
+    public CcCompilationInfo build() {
+      return new CcCompilationInfo(ccCompilationContextInfo);
+    }
+  }
+
+  public static ImmutableList<CcCompilationContextInfo> getCcCompilationContextInfos(
+      Iterable<? extends TransitiveInfoCollection> deps) {
+    ImmutableList.Builder<CcCompilationContextInfo> ccCompilationContextInfosBuilder =
+        ImmutableList.builder();
+    for (CcCompilationInfo ccCompilationInfo :
+        AnalysisUtils.getProviders(deps, CcCompilationInfo.PROVIDER)) {
+      CcCompilationContextInfo ccCompilationContextInfo =
+          ccCompilationInfo.getCcCompilationContextInfo();
+      if (ccCompilationContextInfo != null) {
+        ccCompilationContextInfosBuilder.add(ccCompilationContextInfo);
+      }
+    }
+    return ccCompilationContextInfosBuilder.build();
+  }
+}