Kconfiglib.git/kconfiglib.py, branch v1.0.0

Explain why _make_and() can return None

2017-09-22T05:58:06Z

Makes ANDs between nonexistent expressions yield a nonexistent expression.

Explain the expression structure clearer

2017-09-22T05:11:56Z

Simplify _expr_to_str()

2017-09-22T05:02:05Z

- Get rid of _sym_str_string(), which was only used here. - Remove 'if expr is None' case that could never trigger - Add a test for printing string symbols, as they are a bit tricky: Default values should not be evaluated to tristate values.

Simplify expression representation

2017-09-21T18:21:00Z

Store simple (, , ) tuples instead of (, [list of operands]) tuples. The thought process behind the original representation was to avoid creating lots of nodes for long X && Y && Z && ... chains that sometimes appear, and possibly speed up evaluation. In retrospect, it's pretty bad, for the following reasons: 1) _make_and() and _make_or() created lots of new merged lists instead of simply reusing the tuples already allocated for the subexpressions. This is slow and memory hungry. 2) Any gain in evaluating long expressions would barely offset slower evaluation of short expressions. 3) The code became more complex. Most importantly, this change makes expressions more straightforward to work with for people peeking into internals.

Use non-numbered {} with format()

2017-09-21T03:58:53Z

Supported since Python 2.7, which is seven years old, plus it was already used in a few spots. Do some minor cleanup in the printing routines at the same time. Also remove dubious string append performance note, where it's more about wanting to pass something mutable anyway.

_parse_properties() nit

2017-09-20T21:55:27Z

Simplify 'end_line' handling

2017-09-20T11:54:52Z

No need to set 'end_line_tokens' to None if we use 'end_line' as a flag. Also clarify the comments to make it clear that end_line* is only used for the first line after a block of properties. Also fix comment typo: s/nested functions/nested menus/

Merge T_DEF_BOOL and T_DEF_TRISTATE cases

2017-09-20T08:51:14Z

Extend TOKEN_TO_TYPE to map T_DEF_BOOL and T_DEF_TRISTATE to BOOL and TRISTATE as a convenience.

Use tri_greater() where applicable

2017-09-20T06:10:16Z

Add support for less/greater than comparisons

2017-09-20T03:38:19Z

Was added upstream in 31847b67 (kconfig: allow use of relations other than (in)equality). Completely unused (and undocumented) in the kernel except for in DEBUG_UART_8250_WORD in arch/arm/Kconfig.debug: depends on DEBUG_UART_8250_SHIFT >= 2 (That line was added before lt/gt support by the way, and assumed a feature that wasn't there.) This change (and the upstream one) also slightly changes how (in)equality comparisons work, making e.g. MY_HEX = 0x00037 evaluate to 'y' if MY_HEX is 0x37. Prior to this change, the strings needed to match exactly.