Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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69 lines
2.0 KiB
69 lines
2.0 KiB
/* |
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* upb - a minimalist implementation of protocol buffers. |
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* |
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* Copyright (c) 2011 Google Inc. See LICENSE for details. |
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* Author: Josh Haberman <jhaberman@gmail.com> |
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* |
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* Routines for building defs by parsing descriptors in descriptor.proto format. |
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* This only needs to use the public API of upb_symtab. Later we may also |
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* add routines for dumping a symtab to a descriptor. |
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*/ |
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#ifndef UPB_DESCRIPTOR_H |
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#define UPB_DESCRIPTOR_H |
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#include "upb/handlers.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* upb_descreader ************************************************************/ |
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// We keep a stack of all the messages scopes we are currently in, as well as |
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// the top-level file scope. This is necessary to correctly qualify the |
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// definitions that are contained inside. "name" tracks the name of the |
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// message or package (a bare name -- not qualified by any enclosing scopes). |
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typedef struct { |
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char *name; |
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// Index of the first def that is under this scope. For msgdefs, the |
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// msgdef itself is at start-1. |
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int start; |
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} upb_descreader_frame; |
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typedef struct { |
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upb_deflist defs; |
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upb_descreader_frame stack[UPB_MAX_TYPE_DEPTH]; |
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int stack_len; |
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upb_status status; |
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uint32_t number; |
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char *name; |
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bool saw_number; |
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bool saw_name; |
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char *default_string; |
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upb_fielddef *f; |
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} upb_descreader; |
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void upb_descreader_init(upb_descreader *r); |
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void upb_descreader_uninit(upb_descreader *r); |
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// Registers handlers that will build the defs. Pass the descreader as the |
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// closure. |
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upb_mhandlers *upb_descreader_reghandlers(upb_handlers *h); |
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// Gets the array of defs that have been parsed and removes them from the |
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// descreader. Ownership of the defs is passed to the caller, but the |
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// ownership of the returned array is retained and is invalidated by any other |
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// call into the descreader. The defs will not have been resolved, and are |
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// ready to be added to a symtab. |
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upb_def **upb_descreader_getdefs(upb_descreader *r, int *n); |
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#ifdef __cplusplus |
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} /* extern "C" */ |
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#endif |
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#endif
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