Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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41 lines
1.4 KiB
41 lines
1.4 KiB
6 years ago
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#include "upb/def.h"
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#include "upb/msg.h"
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#ifndef UPB_MSGFACTORY_H_
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#define UPB_MSGFACTORY_H_
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UPB_DECLARE_TYPE(upb::MessageFactory, upb_msgfactory)
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/** upb_msgfactory ************************************************************/
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/* A upb_msgfactory contains a cache of upb_msglayout, upb_handlers, and
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* upb_visitorplan objects. These are the objects necessary to represent,
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* populate, and and visit upb_msg objects.
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*
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* These caches are all populated by upb_msgdef, and lazily created on demand.
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*/
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/* Creates and destroys a msgfactory, respectively. The messages for this
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* msgfactory must come from |symtab| (which should outlive the msgfactory). */
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upb_msgfactory *upb_msgfactory_new(const upb_symtab *symtab);
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void upb_msgfactory_free(upb_msgfactory *f);
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const upb_symtab *upb_msgfactory_symtab(const upb_msgfactory *f);
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/* The functions to get cached objects, lazily creating them on demand. These
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* all require:
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*
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* - m is in upb_msgfactory_symtab(f)
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* - upb_msgdef_mapentry(m) == false (since map messages can't have layouts).
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*
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* The returned objects will live for as long as the msgfactory does.
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*
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* TODO(haberman): consider making this thread-safe and take a const
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* upb_msgfactory. */
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const upb_msglayout *upb_msgfactory_getlayout(upb_msgfactory *f,
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const upb_msgdef *m);
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#endif /* UPB_MSGFACTORY_H_ */
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