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Removed the implicit lfs_t parameter to lfs_traverse

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This is a very minor thing but it has been bugging me. On one hand, all
a callback ever needs is a single pointer for context. On the other
hand, you could make the argument that in the context of littlefs, the
lfs_t struct represents global state and should always be available to
callbacks passed to littlefs.

In the end I'm sticking with only a single context pointer, since this
is satisfies the minimum requirements and has the highest chance of
function reuse. If a user needs access to the lfs_t struct, it can be
passed by reference in the context provided to the callback.

This also matches callbacks used in other languages with more emphasis
on objects and classes. Usually the callback doesn't get a reference to
the caller.
This commit is contained in:
Christopher Haster
2018-07-30 14:40:27 -05:00
parent 225706044e
commit df1b607351
2 changed files with 11 additions and 12 deletions
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3
lfs.h
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@@ -625,8 +625,7 @@ lfs_ssize_t lfs_fs_size(lfs_t *lfs);
// blocks are in use or how much of the storage is available.
//
// Returns a negative error code on failure.
// TODO don't pass lfs_t?
int lfs_fs_traverse(lfs_t *lfs, int (*cb)(lfs_t*, void*, lfs_block_t), void *data);
int lfs_fs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
#endif