1 files changed, 402 insertions, 0 deletions
diff --git a/third_party/protobuf/3.4.0/protobuf.bzl b/third_party/protobuf/3.4.0/protobuf.bzl
new file mode 100644
index 0000000000..23380babc3
--- /dev/null
+++ b/third_party/protobuf/3.4.0/protobuf.bzl
@@ -0,0 +1,402 @@
+def _GetPath(ctx, path):
+  if ctx.label.workspace_root:
+    return ctx.label.workspace_root + '/' + path
+  else:
+    return path
+
+def _IsNewExternal(ctx):
+  # Bazel 0.4.4 and older have genfiles paths that look like:
+  #   bazel-out/local-fastbuild/genfiles/external/repo/foo
+  # After the exec root rearrangement, they look like:
+  #   ../repo/bazel-out/local-fastbuild/genfiles/foo
+  return ctx.label.workspace_root.startswith("../")
+
+def _GenDir(ctx):
+  if _IsNewExternal(ctx):
+    # We are using the fact that Bazel 0.4.4+ provides repository-relative paths
+    # for ctx.genfiles_dir.
+    return ctx.genfiles_dir.path + (
+        "/" + ctx.attr.includes[0] if ctx.attr.includes and ctx.attr.includes[0] else "")
+  # This means that we're either in the old version OR the new version in the local repo.
+  # Either way, appending the source path to the genfiles dir works.
+  return ctx.var["GENDIR"] + "/" + _SourceDir(ctx)
+
+def _SourceDir(ctx):
+  if not ctx.attr.includes:
+    return ctx.label.workspace_root
+  if not ctx.attr.includes[0]:
+    return _GetPath(ctx, ctx.label.package)
+  if not ctx.label.package:
+    return _GetPath(ctx, ctx.attr.includes[0])
+  return _GetPath(ctx, ctx.label.package + '/' + ctx.attr.includes[0])
+
+def _CcHdrs(srcs, use_grpc_plugin=False):
+  ret = [s[:-len(".proto")] + ".pb.h" for s in srcs]
+  if use_grpc_plugin:
+    ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs]
+  return ret
+
+def _CcSrcs(srcs, use_grpc_plugin=False):
+  ret = [s[:-len(".proto")] + ".pb.cc" for s in srcs]
+  if use_grpc_plugin:
+    ret += [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
+  return ret
+
+def _CcOuts(srcs, use_grpc_plugin=False):
+  return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
+
+def _PyOuts(srcs):
+  return [s[:-len(".proto")] + "_pb2.py" for s in srcs]
+
+def _RelativeOutputPath(path, include, dest=""):
+  if include == None:
+    return path
+
+  if not path.startswith(include):
+    fail("Include path %s isn't part of the path %s." % (include, path))
+
+  if include and include[-1] != '/':
+    include = include + '/'
+  if dest and dest[-1] != '/':
+    dest = dest + '/'
+
+  path = path[len(include):]
+  return dest + path
+
+def _proto_gen_impl(ctx):
+  """General implementation for generating protos"""
+  srcs = ctx.files.srcs
+  deps = []
+  deps += ctx.files.srcs
+  source_dir = _SourceDir(ctx)
+  gen_dir = _GenDir(ctx)
+  if source_dir:
+    import_flags = ["-I" + source_dir, "-I" + gen_dir]
+  else:
+    import_flags = ["-I."]
+
+  for dep in ctx.attr.deps:
+    import_flags += dep.proto.import_flags
+    deps += dep.proto.deps
+
+  args = []
+  if ctx.attr.gen_cc:
+    args += ["--cpp_out=" + gen_dir]
+  if ctx.attr.gen_py:
+    args += ["--python_out=" + gen_dir]
+
+  inputs = srcs + deps
+  if ctx.executable.plugin:
+    plugin = ctx.executable.plugin
+    lang = ctx.attr.plugin_language
+    if not lang and plugin.basename.startswith('protoc-gen-'):
+      lang = plugin.basename[len('protoc-gen-'):]
+    if not lang:
+      fail("cannot infer the target language of plugin", "plugin_language")
+
+    outdir = gen_dir
+    if ctx.attr.plugin_options:
+      outdir = ",".join(ctx.attr.plugin_options) + ":" + outdir
+    args += ["--plugin=protoc-gen-%s=%s" % (lang, plugin.path)]
+    args += ["--%s_out=%s" % (lang, outdir)]
+    inputs += [plugin]
+
+  if args:
+    ctx.action(
+        inputs=inputs,
+        outputs=ctx.outputs.outs,
+        arguments=args + import_flags + [s.path for s in srcs],
+        executable=ctx.executable.protoc,
+        mnemonic="ProtoCompile",
+        use_default_shell_env=True,
+    )
+
+  return struct(
+      proto=struct(
+          srcs=srcs,
+          import_flags=import_flags,
+          deps=deps,
+      ),
+  )
+
+proto_gen = rule(
+    attrs = {
+        "srcs": attr.label_list(allow_files = True),
+        "deps": attr.label_list(providers = ["proto"]),
+        "includes": attr.string_list(),
+        "protoc": attr.label(
+            cfg = "host",
+            executable = True,
+            single_file = True,
+            mandatory = True,
+        ),
+        "plugin": attr.label(
+            cfg = "host",
+            allow_files = True,
+            executable = True,
+        ),
+        "plugin_language": attr.string(),
+        "plugin_options": attr.string_list(),
+        "gen_cc": attr.bool(),
+        "gen_py": attr.bool(),
+        "outs": attr.output_list(),
+    },
+    output_to_genfiles = True,
+    implementation = _proto_gen_impl,
+)
+"""Generates codes from Protocol Buffers definitions.
+
+This rule helps you to implement Skylark macros specific to the target
+language. You should prefer more specific `cc_proto_library `,
+`py_proto_library` and others unless you are adding such wrapper macros.
+
+Args:
+  srcs: Protocol Buffers definition files (.proto) to run the protocol compiler
+    against.
+  deps: a list of dependency labels; must be other proto libraries.
+  includes: a list of include paths to .proto files.
+  protoc: the label of the protocol compiler to generate the sources.
+  plugin: the label of the protocol compiler plugin to be passed to the protocol
+    compiler.
+  plugin_language: the language of the generated sources
+  plugin_options: a list of options to be passed to the plugin
+  gen_cc: generates C++ sources in addition to the ones from the plugin.
+  gen_py: generates Python sources in addition to the ones from the plugin.
+  outs: a list of labels of the expected outputs from the protocol compiler.
+"""
+
+def cc_proto_library(
+        name,
+        srcs=[],
+        deps=[],
+        cc_libs=[],
+        include=None,
+        protoc="//:protoc",
+        internal_bootstrap_hack=False,
+        use_grpc_plugin=False,
+        default_runtime="//:protobuf",
+        **kargs):
+  """Bazel rule to create a C++ protobuf library from proto source files
+
+  NOTE: the rule is only an internal workaround to generate protos. The
+  interface may change and the rule may be removed when bazel has introduced
+  the native rule.
+
+  Args:
+    name: the name of the cc_proto_library.
+    srcs: the .proto files of the cc_proto_library.
+    deps: a list of dependency labels; must be cc_proto_library.
+    cc_libs: a list of other cc_library targets depended by the generated
+        cc_library.
+    include: a string indicating the include path of the .proto files.
+    protoc: the label of the protocol compiler to generate the sources.
+    internal_bootstrap_hack: a flag indicate the cc_proto_library is used only
+        for bootstraping. When it is set to True, no files will be generated.
+        The rule will simply be a provider for .proto files, so that other
+        cc_proto_library can depend on it.
+    use_grpc_plugin: a flag to indicate whether to call the grpc C++ plugin
+        when processing the proto files.
+    default_runtime: the implicitly default runtime which will be depended on by
+        the generated cc_library target.
+    **kargs: other keyword arguments that are passed to cc_library.
+
+  """
+
+  includes = []
+  if include != None:
+    includes = [include]
+
+  if internal_bootstrap_hack:
+    # For pre-checked-in generated files, we add the internal_bootstrap_hack
+    # which will skip the codegen action.
+    proto_gen(
+        name=name + "_genproto",
+        srcs=srcs,
+        deps=[s + "_genproto" for s in deps],
+        includes=includes,
+        protoc=protoc,
+        visibility=["//visibility:public"],
+    )
+    # An empty cc_library to make rule dependency consistent.
+    native.cc_library(
+        name=name,
+        **kargs)
+    return
+
+  grpc_cpp_plugin = None
+  if use_grpc_plugin:
+    grpc_cpp_plugin = "//external:grpc_cpp_plugin"
+
+  gen_srcs = _CcSrcs(srcs, use_grpc_plugin)
+  gen_hdrs = _CcHdrs(srcs, use_grpc_plugin)
+  outs = gen_srcs + gen_hdrs
+
+  proto_gen(
+      name=name + "_genproto",
+      srcs=srcs,
+      deps=[s + "_genproto" for s in deps],
+      includes=includes,
+      protoc=protoc,
+      plugin=grpc_cpp_plugin,
+      plugin_language="grpc",
+      gen_cc=1,
+      outs=outs,
+      visibility=["//visibility:public"],
+  )
+
+  if default_runtime and not default_runtime in cc_libs:
+    cc_libs = cc_libs + [default_runtime]
+  if use_grpc_plugin:
+    cc_libs = cc_libs + ["//external:grpc_lib"]
+
+  native.cc_library(
+      name=name,
+      srcs=gen_srcs,
+      hdrs=gen_hdrs,
+      deps=cc_libs + deps,
+      includes=includes,
+      **kargs)
+
+def internal_gen_well_known_protos_java(srcs):
+  """Bazel rule to generate the gen_well_known_protos_java genrule
+
+  Args:
+    srcs: the well known protos
+  """
+  root = Label("%s//protobuf_java" % (REPOSITORY_NAME)).workspace_root
+  pkg = PACKAGE_NAME + "/" if PACKAGE_NAME else ""
+  if root == "":
+    include = " -I%ssrc " % pkg
+  else:
+    include = " -I%s/%ssrc " % (root, pkg)
+  native.genrule(
+    name = "gen_well_known_protos_java",
+    srcs = srcs,
+    outs = [
+        "wellknown.srcjar",
+    ],
+    cmd = "$(location :protoc) --java_out=$(@D)/wellknown.jar" +
+          " %s $(SRCS) " % include +
+          " && mv $(@D)/wellknown.jar $(@D)/wellknown.srcjar",
+    tools = [":protoc"],
+  )
+
+def internal_copied_filegroup(name, srcs, strip_prefix, dest, **kwargs):
+  """Macro to copy files to a different directory and then create a filegroup.
+
+  This is used by the //:protobuf_python py_proto_library target to work around
+  an issue caused by Python source files that are part of the same Python
+  package being in separate directories.
+
+  Args:
+    srcs: The source files to copy and add to the filegroup.
+    strip_prefix: Path to the root of the files to copy.
+    dest: The directory to copy the source files into.
+    **kwargs: extra arguments that will be passesd to the filegroup.
+  """
+  outs = [_RelativeOutputPath(s, strip_prefix, dest) for s in srcs]
+
+  native.genrule(
+      name = name + "_genrule",
+      srcs = srcs,
+      outs = outs,
+      cmd = " && ".join(
+          ["cp $(location %s) $(location %s)" %
+           (s, _RelativeOutputPath(s, strip_prefix, dest)) for s in srcs]),
+  )
+
+  native.filegroup(
+      name = name,
+      srcs = outs,
+      **kwargs)
+
+def py_proto_library(
+        name,
+        srcs=[],
+        deps=[],
+        py_libs=[],
+        py_extra_srcs=[],
+        include=None,
+        default_runtime="//:protobuf_python",
+        protoc="//:protoc",
+        use_grpc_plugin=False,
+        **kargs):
+  """Bazel rule to create a Python protobuf library from proto source files
+
+  NOTE: the rule is only an internal workaround to generate protos. The
+  interface may change and the rule may be removed when bazel has introduced
+  the native rule.
+
+  Args:
+    name: the name of the py_proto_library.
+    srcs: the .proto files of the py_proto_library.
+    deps: a list of dependency labels; must be py_proto_library.
+    py_libs: a list of other py_library targets depended by the generated
+        py_library.
+    py_extra_srcs: extra source files that will be added to the output
+        py_library. This attribute is used for internal bootstrapping.
+    include: a string indicating the include path of the .proto files.
+    default_runtime: the implicitly default runtime which will be depended on by
+        the generated py_library target.
+    protoc: the label of the protocol compiler to generate the sources.
+    use_grpc_plugin: a flag to indicate whether to call the Python C++ plugin
+        when processing the proto files.
+    **kargs: other keyword arguments that are passed to cc_library.
+
+  """
+  outs = _PyOuts(srcs)
+
+  includes = []
+  if include != None:
+    includes = [include]
+
+  grpc_python_plugin = None
+  if use_grpc_plugin:
+    grpc_python_plugin = "//external:grpc_python_plugin"
+    # Note: Generated grpc code depends on Python grpc module. This dependency
+    # is not explicitly listed in py_libs. Instead, host system is assumed to
+    # have grpc installed.
+
+  proto_gen(
+      name=name + "_genproto",
+      srcs=srcs,
+      deps=[s + "_genproto" for s in deps],
+      includes=includes,
+      protoc=protoc,
+      gen_py=1,
+      outs=outs,
+      visibility=["//visibility:public"],
+      plugin=grpc_python_plugin,
+      plugin_language="grpc"
+  )
+
+  if default_runtime and not default_runtime in py_libs + deps:
+    py_libs = py_libs + [default_runtime]
+
+  native.py_library(
+      name=name,
+      srcs=outs+py_extra_srcs,
+      deps=py_libs+deps,
+      imports=includes,
+      **kargs)
+
+def internal_protobuf_py_tests(
+    name,
+    modules=[],
+    **kargs):
+  """Bazel rules to create batch tests for protobuf internal.
+
+  Args:
+    name: the name of the rule.
+    modules: a list of modules for tests. The macro will create a py_test for
+        each of the parameter with the source "google/protobuf/%s.py"
+    kargs: extra parameters that will be passed into the py_test.
+
+  """
+  for m in modules:
+    s = "python/google/protobuf/internal/%s.py" % m
+    native.py_test(
+        name="py_%s" % m,
+        srcs=[s],
+        main=s,
+        **kargs)