Import code from internal repository to git

third_party/closure/compiler/closure_js_binary.bzl

@@ -0,0 +1,96 @@
+# -*- mode: python; -*-
+#
+# Copyright 2016 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.
+
+"""Rule for building JavaScript binaries with Closure Compiler.
+"""
+
+load("//third_party/closure/compiler/private:defs.bzl",
+     "JS_LANGUAGE_DEFAULT",
+     "JS_LIBRARY_ATTRS",
+     "JS_PEDANTIC_ARGS",
+     "JS_HIDE_WARNING_ARGS",
+     "check_js_language",
+     "collect_js_srcs",
+     "determine_js_language",
+     "is_using_closure_library")
+
+def _impl(ctx):
+  srcs, externs = collect_js_srcs(ctx)
+  check_js_language(ctx.attr.language_in)
+  check_js_language(ctx.attr.language_out)
+  dependent_language = determine_js_language(ctx)
+  if ctx.attr.language_in != dependent_language:
+    fail("language_in was %s but dependencies use %s" % (
+        ctx.attr.language_in, dependent_language))
+  args = [
+      "--js_output_file=%s" % ctx.outputs.out.path,
+      "--create_source_map=%s" % ctx.outputs.srcmap.path,
+      "--language_in=%s" % ctx.attr.language_in,
+      "--language_out=%s" % ctx.attr.language_out,
+      "--compilation_level=" + ctx.attr.compilation_level,
+      "--warning_level=VERBOSE",
+      "--new_type_inf",
+      "--generate_exports",
+  ]
+  args += JS_HIDE_WARNING_ARGS
+  if ctx.attr.formatting:
+    args += ["--formatting=" + ctx.attr.formatting]
+  if ctx.attr.debug:
+    args += ["--debug"]
+  else:
+    if is_using_closure_library(srcs):
+      args += ["--define=goog.DEBUG=false"]
+  if ctx.attr.main:
+    args += [
+        "--dependency_mode=STRICT",
+        "--entry_point=goog:%s" % ctx.attr.main,
+    ]
+  else:
+    args += ["--dependency_mode=LOOSE"]
+  if ctx.attr.pedantic:
+    args += JS_PEDANTIC_ARGS
+    args += ["--use_types_for_optimization"]
+  args += ctx.attr.defs
+  args += ["--externs=%s" % extern.path for extern in externs]
+  args += ["--js=%s" % src.path for src in srcs]
+  ctx.action(
+      inputs=list(srcs) + list(externs),
+      outputs=[ctx.outputs.out, ctx.outputs.srcmap],
+      executable=ctx.executable._compiler,
+      arguments=args,
+      mnemonic="JSCompile",
+      progress_message="Compiling %d JavaScript files to %s" % (
+          len(srcs) + len(externs),
+          ctx.outputs.out.short_path))
+  return struct(files=set([ctx.outputs.out]))
+
+closure_js_binary = rule(
+    implementation=_impl,
+    attrs=JS_LIBRARY_ATTRS + {
+        "main": attr.string(),
+        "compilation_level": attr.string(default="ADVANCED"),
+        "defs": attr.string_list(),
+        "pedantic": attr.bool(default=False),
+        "debug": attr.bool(default=False),
+        "formatting": attr.string(),
+        "language_in": attr.string(default=JS_LANGUAGE_DEFAULT),
+        "language_out": attr.string(default="ECMASCRIPT3"),
+        "_compiler": attr.label(
+            default=Label("//third_party/closure/compiler"),
+            executable=True),
+    },
+    outputs={"out": "%{name}.js",
+             "srcmap": "%{name}.sourcemap"})