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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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76 lines
2.5 KiB
76 lines
2.5 KiB
3 years ago
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#!/usr/bin/env python3
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# Copyright 2021 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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# utility: print a big comment block into a set of files
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def put_banner(files, banner):
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for f in files:
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print('/*', file=f)
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for line in banner:
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print(' * %s' % line, file=f)
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print(' */', file=f)
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print('', file=f)
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with open('src/core/lib/promise/detail/switch.h', 'w') as H:
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# copy-paste copyright notice from this file
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with open(sys.argv[0]) as my_source:
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copyright = []
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for line in my_source:
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if line[0] != '#':
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break
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for line in my_source:
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if line[0] == '#':
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copyright.append(line)
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break
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for line in my_source:
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if line[0] != '#':
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break
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copyright.append(line)
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put_banner([H], [line[2:].rstrip() for line in copyright])
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put_banner([H], ["Automatically generated by %s" % sys.argv[0]])
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print("#ifndef GRPC_CORE_LIB_PROMISE_DETAIL_SWITCH_H", file=H)
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print("#define GRPC_CORE_LIB_PROMISE_DETAIL_SWITCH_H", file=H)
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print('', file=H)
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print('#include <grpc/impl/codegen/port_platform.h>', file=H)
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print('', file=H)
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print("#include <stdlib.h>", file=H)
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print('', file=H)
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print("namespace grpc_core {", file=H)
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for n in range(1, 33):
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print('', file=H)
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print("template <typename R, %s> R Switch(char idx, %s) {" % (
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", ".join("typename F%d" % i for i in range(0, n)),
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", ".join("F%d f%d" % (i, i) for i in range(0, n)),
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),
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file=H)
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print(" switch (idx) {", file=H)
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for i in range(0, n):
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print(" case %d: return f%d();" % (i, i), file=H)
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print(" }", file=H)
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print(" abort();", file=H)
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print("}", file=H)
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print('', file=H)
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print("}", file=H)
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print('', file=H)
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print("#endif // GRPC_CORE_LIB_PROMISE_DETAIL_SWITCH_H", file=H)
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