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e72cb769
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2017-07-14T14:37:07
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parse: implement `git_parse_peek`
Some code parts need to inspect the next few bytes without actually
consuming it yet, for example to examine what content it has to expect
next. Create a new function `git_parse_peek` which returns the next byte
without modifying the parsing context and use it at multiple call sites.
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252f2eee
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2017-07-14T13:45:05
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parse: implement and use `git_parse_advance_digit`
The patch parsing code has multiple recurring patterns where we want to
parse an actual number. Create a new function `git_parse_advance_digit`
and use it to avoid code duplication.
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ef1395f3
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2017-11-11T15:30:43
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parse: extract parse module
The `git_patch_parse_ctx` encapsulates both parser state as well as
options specific to patch parsing. To advance this state and keep it
consistent, we provide a few functions which handle advancing the
current position and accessing bytes of the patch contents. In fact,
these functions are quite generic and not related to patch-parsing by
themselves. Seeing that we have similar logic inside of other modules,
it becomes quite enticing to extract this functionality into its own
parser module.
To do so, we create a new module `parse` with a central struct called
`git_parse_ctx`. It encapsulates both the content that is to be parsed
as well as its lengths and the current position. `git_patch_parse_ctx`
now only contains this `parse_ctx` only, which is then accessed whenever
we need to touch the current parser. This is the first step towards
re-using this functionality across other modules which require parsing
functionality and remove code-duplication.
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