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This is run with uncrustify 0.70.1, and black 19.10b0.
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This helps to prevent mistakes, and allows easily changing the ROM value of
None if needed.
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Fixes issue #5018.
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So they don't clash with other VFS implementations.
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This patch moves the implementation of stream closure from a dedicated
method to the ioctl of the stream protocol, for each type that implements
closing. The benefits of this are:
1. Rounds out the stream ioctl function, which already includes flush,
seek and poll (among other things).
2. Makes calling mp_stream_close() on an object slightly more efficient
because it now no longer needs to lookup the close method and call it,
rather it just delegates straight to the ioctl function (if it exists).
3. Reduces code size and allows future types that implement the stream
protocol to be smaller because they don't need a dedicated close method.
Code size reduction is around 200 bytes smaller for x86 archs and around
30 bytes smaller for the bare-metal archs.
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This patch just moves the definition of the wrapper object fat_vfs_open_obj
to the location of the definition of its function, which matches how it's
done in most other places in the code base.
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CPython doesn't allow SEEK_CUR with non-zero offset for files in text mode,
and uPy inherited this behaviour for both text and binary files. It makes
sense to provide full support for SEEK_CUR of binary-mode files in uPy, and
to do this in a minimal way means also allowing to use SEEK_CUR with
non-zero offsets on text-mode files. That seems to be a fair compromise.
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Header files that are considered internal to the py core and should not
normally be included directly are:
py/nlr.h - internal nlr configuration and declarations
py/bc0.h - contains bytecode macro definitions
py/runtime0.h - contains basic runtime enums
Instead, the top-level header files to include are one of:
py/obj.h - includes runtime0.h and defines everything to use the
mp_obj_t type
py/runtime.h - includes mpstate.h and hence nlr.h, obj.h, runtime0.h,
and defines everything to use the general runtime support functions
Additional, specific headers (eg py/objlist.h) can be included if needed.
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There were several different spellings of MicroPython present in comments,
when there should be only one.
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Some ports may want to compile with generic MICROPY_VFS support but without
the VfsFat class. This patch allows such a thing.
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Allows to iterate over the following without allocating on the heap:
- tuple
- list
- string, bytes
- bytearray, array
- dict (not dict.keys, dict.values, dict.items)
- set, frozenset
Allows to call the following without heap memory:
- all, any, min, max, sum
TODO: still need to allocate stack memory in bytecode for iter_buf.
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vfs.h is for generic VFS declarations, and vfs_fat.h is for VfsFat
specific things.
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Everyone should now be using the new ooFatFs library. The old one is no
longer supported and will be removed.
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Replaced by MICROPY_VFS and the VFS sub-system.
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The VfsFat object can now be mounted by the generic VFS sub-system.
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And move declaration of mp_fat_vfs_type to this file.
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If MICROPY_VFS_FAT is enabled by a port then the port must switch to using
MICROPY_FATFS_OO. Otherwise a port can continue to use the FatFs code
without any changes.
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Its addition was due to an early exploration on how to add CPython-like
stream interface. It's clear that it's not needed and just takes up
bytes in all ports.
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As per CPython semantics. In particular, file.__del__() should not raise
an exception if the file is already closed.
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It's now used for more than just stream protocol (e.g. pin protocol), so
don't use false names.
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