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implement upbdev_ProcessInput() and upbdev_ProcessOutput()
Pull out some of the logic from the upbdev plugin into a standalone C library. PiperOrigin-RevId: 491754614
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| // Copyright (c) 2009-2022, Google LLC | ||
| // 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 LLC 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 Google LLC 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. | ||
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| #include "upbc/upbdev.h" | ||
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| #include <unistd.h> | ||
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| #include "google/protobuf/compiler/plugin.upb.h" | ||
| #include "google/protobuf/compiler/plugin.upbdefs.h" | ||
| #include "upb/base/status.h" | ||
| #include "upb/json/decode.h" | ||
| #include "upb/json/encode.h" | ||
| #include "upb/mem/arena.h" | ||
| #include "upbc/code_generator_request.h" | ||
| #include "upbc/code_generator_request.upb.h" | ||
| #include "upbc/code_generator_request.upbdefs.h" | ||
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| static google_protobuf_compiler_CodeGeneratorResponse* upbc_JsonDecode( | ||
| const char* data, size_t size, upb_Arena* a, upb_Status* status) { | ||
| google_protobuf_compiler_CodeGeneratorResponse* response = | ||
| google_protobuf_compiler_CodeGeneratorResponse_new(a); | ||
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| upb_DefPool* s = upb_DefPool_New(); | ||
| const upb_MessageDef* m = google_protobuf_compiler_CodeGeneratorResponse_getmsgdef(s); | ||
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| (void)upb_JsonDecode(data, size, response, m, s, 0, a, status); | ||
| if (!upb_Status_IsOk(status)) return NULL; | ||
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| upb_DefPool_Free(s); | ||
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| return response; | ||
| } | ||
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| static upb_StringView upbc_JsonEncode(const upbc_CodeGeneratorRequest* request, | ||
| upb_Arena* a, upb_Status* status) { | ||
| upb_StringView out = {.data = NULL, .size = 0}; | ||
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| upb_DefPool* s = upb_DefPool_New(); | ||
| const upb_MessageDef* m = upbc_CodeGeneratorRequest_getmsgdef(s); | ||
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| out.size = upb_JsonEncode(request, m, s, 0, NULL, 0, status); | ||
| if (!upb_Status_IsOk(status)) goto done; | ||
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| char* data = (char*)upb_Arena_Malloc(a, out.size + 1); | ||
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| (void)upb_JsonEncode(request, m, s, 0, data, out.size + 1, status); | ||
| if (!upb_Status_IsOk(status)) goto done; | ||
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| out.data = (const char*)data; | ||
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| done: | ||
| upb_DefPool_Free(s); | ||
| return out; | ||
| } | ||
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| upb_StringView upbdev_ProcessInput(const char* buf, size_t size, upb_Arena* a, | ||
| upb_Status* status) { | ||
| upb_StringView out = {.data = NULL, .size = 0}; | ||
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| google_protobuf_compiler_CodeGeneratorRequest* inner_request = | ||
| google_protobuf_compiler_CodeGeneratorRequest_parse(buf, size, a); | ||
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| const upbc_CodeGeneratorRequest* outer_request = | ||
| upbc_MakeCodeGeneratorRequest(inner_request, a, status); | ||
| if (upb_Status_IsOk(status)) out = upbc_JsonEncode(outer_request, a, status); | ||
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| return out; | ||
| } | ||
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| upb_StringView upbdev_ProcessOutput(const char* buf, size_t size, upb_Arena* a, | ||
| upb_Status* status) { | ||
| upb_StringView out = {.data = NULL, .size = 0}; | ||
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| int response = upbc_JsonDecode(buf, size, a, status); | ||
| if (upb_Status_IsOk(status)) { | ||
| out.data = | ||
| google_protobuf_compiler_CodeGeneratorResponse_serialize(response, a, &out.size); | ||
| } | ||
| return out; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| /* | ||
| * Copyright (c) 2009-2022, Google LLC | ||
| * 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 LLC 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 Google LLC 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. | ||
| */ | ||
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| #ifndef UPBC_UPBDEV_H_ | ||
| #define UPBC_UPBDEV_H_ | ||
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| #include "upb/base/status.h" | ||
| #include "upb/base/string_view.h" | ||
| #include "upb/mem/arena.h" | ||
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| // Must be last. | ||
| #include "upb/port/def.inc" | ||
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
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| // Consume |buf|, deserialize it to a Code_Generator_Request proto, construct a | ||
| // upbc_Code_Generator_Request, and return it as a JSON-encoded string. | ||
| upb_StringView upbdev_ProcessInput(const char* buf, size_t size, upb_Arena* a, | ||
| upb_Status* status); | ||
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| // Deserialize |buf| from JSON then serialize it to wire format and return. | ||
| upb_StringView upbdev_ProcessOutput(const char* buf, size_t size, upb_Arena* a, | ||
| upb_Status* status); | ||
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| #ifdef __cplusplus | ||
| } /* extern "C" */ | ||
| #endif | ||
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| #include "upb/port/undef.inc" | ||
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| #endif // UPBC_UPBDEV_H_ |