mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
3.5 KiB
113 lines
3.5 KiB
# Copyright 2015 gRPC authors. |
|
# |
|
# 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. |
|
|
|
""" |
|
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 += " $(location %s)" % (src) |
|
return protoc_command + flags + srcs_params |
|
|
|
def objc_proto_library(name, srcs, visibility=None): |
|
"""Declares an objc_library for the code generated by protoc from the given |
|
proto sources. This generated code doesn't include proto services. |
|
""" |
|
h_files = [] |
|
m_files = [] |
|
for src in srcs: |
|
src = _file_to_upper_camel(src) |
|
h_files += [_file_with_extension(src, ".pbobjc.h")] |
|
m_files += [_file_with_extension(src, ".pbobjc.m")] |
|
|
|
protoc_flags = "--objc_out=$(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, |
|
)
|
|
|