| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128 | # Copyright 2015, Google Inc.# All rights reserved.## Redistribution and use in source and binary forms, with or without# modification, are permitted provided that the following conditions are# met:##     * Redistributions of source code must retain the above copyright# notice, this list of conditions and the following disclaimer.#     * Redistributions in binary form must reproduce the above# copyright notice, this list of conditions and the following disclaimer# in the documentation and/or other materials provided with the# distribution.#     * Neither the name of Google Inc. nor the names of its# contributors may be used to endorse or promote products derived from# this software without specific prior written permission.## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."""Bazel macros to declare gRPC libraries automatically generated from proto files.This file declares two macros:- objc_proto_library- objc_grpc_library"""def _lower_underscore_to_upper_camel(str):  humps = []  for hump in str.split('_'):    humps += [hump[0].upper() + hump[1:]]  return "".join(humps)def _file_to_upper_camel(src):  elements = src.rpartition('/')  upper_camel = _lower_underscore_to_upper_camel(elements[-1])  return "".join(elements[:-1] + [upper_camel])def _file_with_extension(src, ext):  elements = src.rpartition('/')  basename = elements[-1].partition('.')[0]  return "".join(elements[:-1] + [basename, ext])def _protoc_invocation(srcs, flags):  """Returns a command line to invoke protoc from a genrule, on the given  sources, using the given flags.  """  protoc_command = "$(location //external:protoc) -I . "  srcs_params = ""  for src in srcs:    srcs_params += " $(location %s)" % (src)  return protoc_command + flags + srcs_paramsdef objc_proto_library(name, srcs, visibility=None):  """Declares an objc_library for the code generated by protoc from the given  proto sources. This generated code doesn't include proto services.  """  h_files = []  m_files = []  for src in srcs:    src = _file_to_upper_camel(src)    h_files += [_file_with_extension(src, ".pbobjc.h")]    m_files += [_file_with_extension(src, ".pbobjc.m")]  protoc_flags = "--objc_out=$(GENDIR)"  native.genrule(    name = name + "_codegen",    srcs = srcs + ["//external:protoc"],    outs = h_files + m_files,    cmd = _protoc_invocation(srcs, protoc_flags),  )  native.objc_library(    name = name,    hdrs = h_files,    includes = ["."],    non_arc_srcs = m_files,    deps = ["//external:protobuf_objc"],    visibility = visibility,  )def objc_grpc_library(name, services, other_messages, visibility=None):  """Declares an objc_library for the code generated by gRPC and protoc from the  given proto sources (services and other_messages). The generated code doesn't  include proto services of the files passed as other_messages.  """  objc_proto_library(name + "_messages", services + other_messages)  h_files = []  m_files = []  for src in services:    src = _file_to_upper_camel(src)    h_files += [_file_with_extension(src, ".pbrpc.h")]    m_files += [_file_with_extension(src, ".pbrpc.m")]  protoc_flags = ("--grpc_out=$(GENDIR) --plugin=" +      "protoc-gen-grpc=$(location //external:grpc_protoc_plugin_objc)")  native.genrule(    name = name + "_codegen",    srcs = services + [      "//external:grpc_protoc_plugin_objc",      "//external:protoc",    ],    outs = h_files + m_files,    cmd = _protoc_invocation(services, protoc_flags),  )  native.objc_library(    name = name,    hdrs = h_files,    includes = ["."],    srcs = m_files,    deps = [      ":" + name + "_messages",      "//external:proto_objc_rpc",    ],    visibility = visibility,  )
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