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335fe2545e
Introduce a new function that maps an object source's type to a human-readable name. Use the function to provide better human-readable error messages for the downcasting functions. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
#ifndef ODB_SOURCE_FILES_H
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#define ODB_SOURCE_FILES_H
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#include "odb/source.h"
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struct odb_source_loose;
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struct odb_source_packed;
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/*
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* The files object database source uses a combination of loose objects and
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* packfiles. It is the default backend used by Git to store objects.
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*/
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struct odb_source_files {
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struct odb_source base;
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struct odb_source_loose *loose;
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struct odb_source_packed *packed;
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};
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/* Allocate and initialize a new object source. */
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struct odb_source_files *odb_source_files_new(struct object_database *odb,
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const char *path,
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bool local);
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/*
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* Cast the given object database source to the files backend. This will cause
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* a BUG in case the source doesn't use this backend.
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*/
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static inline struct odb_source_files *odb_source_files_downcast(struct odb_source *source)
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{
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if (source->type != ODB_SOURCE_FILES)
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BUG("trying to downcast source of type '%s' to '%s'",
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odb_source_type_to_name(source->type),
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odb_source_type_to_name(ODB_SOURCE_FILES));
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return container_of(source, struct odb_source_files, base);
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}
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#endif
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