Initial checkin of Python rules into Bazel.

--
MOS_MIGRATED_REVID=89123900

1 files changed, 82 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/python/PyLibrary.java b/src/main/java/com/google/devtools/build/lib/rules/python/PyLibrary.java
new file mode 100644
index 0000000000..89b4fc8c19
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/python/PyLibrary.java
@@ -0,0 +1,82 @@
+// Copyright 2014 Google Inc. 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.python;
+
+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.RuleConfiguredTargetBuilder;
+import com.google.devtools.build.lib.analysis.RuleContext;
+import com.google.devtools.build.lib.analysis.Runfiles;
+import com.google.devtools.build.lib.analysis.RunfilesProvider;
+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;
+import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
+import com.google.devtools.build.lib.rules.cpp.CcLinkParams;
+import com.google.devtools.build.lib.rules.cpp.CcLinkParamsProvider;
+import com.google.devtools.build.lib.rules.cpp.CcLinkParamsStore;
+
+/**
+ * An implementation for the {@code py_library} rule.
+ */
+public abstract class PyLibrary implements RuleConfiguredTargetFactory {
+
+  /**
+   * Create a {@link PythonSemantics} object that governs
+   * the behavior of this rule.
+   */
+  protected abstract PythonSemantics createSemantics();
+
+  @Override
+  public ConfiguredTarget create(final RuleContext ruleContext) {
+    PythonSemantics semantics = createSemantics();
+    PyCommon common = new PyCommon(ruleContext);
+    common.initCommon(common.getDefaultPythonVersion());
+    common.validatePackageName();
+    NestedSet<Artifact> filesToBuild =
+        NestedSetBuilder.wrap(Order.STABLE_ORDER, common.validateSrcs());
+    common.addPyExtraActionPseudoAction();
+
+    CcLinkParamsStore ccLinkParamsStore = new CcLinkParamsStore() {
+      @Override
+      protected void collect(CcLinkParams.Builder builder, boolean linkingStatically,
+                             boolean linkShared) {
+        builder.addTransitiveTargets(ruleContext.getPrerequisites("deps", Mode.TARGET));
+        builder.addTransitiveLangTargets(
+            ruleContext.getPrerequisites("deps", Mode.TARGET),
+            PyCcLinkParamsProvider.TO_LINK_PARAMS);
+      }
+    };
+
+    Runfiles.Builder runfilesBuilder = new Runfiles.Builder();
+    if (common.getConvertedFiles() != null) {
+      runfilesBuilder.addSymlinks(common.getConvertedFiles());
+    } else {
+      runfilesBuilder.addTransitiveArtifacts(filesToBuild);
+    }
+    runfilesBuilder.setManifestExpander(PythonUtils.GET_INIT_PY_FILES);
+    runfilesBuilder.add(ruleContext, PythonRunfilesProvider.TO_RUNFILES);
+    runfilesBuilder.addRunfiles(ruleContext, RunfilesProvider.DEFAULT_RUNFILES);
+
+    RuleConfiguredTargetBuilder builder = new RuleConfiguredTargetBuilder(ruleContext);
+    common.addCommonTransitiveInfoProviders(builder, semantics, filesToBuild);
+    return builder
+        .setFilesToBuild(filesToBuild)
+        .add(RunfilesProvider.class, RunfilesProvider.simple(runfilesBuilder.build()))
+        .add(CcLinkParamsProvider.class, new CcLinkParamsProvider(ccLinkParamsStore))
+        .build();
+  }
+}
+