neovim/runtime/lua/vim/_meta/regex.lua
Lewis Russell 9beb40a4db feat(docs): replace lua2dox.lua
Problem:

The documentation flow (`gen_vimdoc.py`) has several issues:
- it's not very versatile
- depends on doxygen
- doesn't work well with Lua code as it requires an awkward filter script to convert it into pseudo-C.
- The intermediate XML files and filters makes it too much like a rube goldberg machine.

Solution:

Re-implement the flow using Lua, LPEG and treesitter.

- `gen_vimdoc.py` is now replaced with `gen_vimdoc.lua` and replicates a portion of the logic.
- `lua2dox.lua` is gone!
- No more XML files.
- Doxygen is now longer used and instead we now use:
  - LPEG for comment parsing (see `scripts/luacats_grammar.lua` and `scripts/cdoc_grammar.lua`).
  - LPEG for C parsing (see `scripts/cdoc_parser.lua`)
  - Lua patterns for Lua parsing (see `scripts/luacats_parser.lua`).
  - Treesitter for Markdown parsing (see `scripts/text_utils.lua`).
- The generated `runtime/doc/*.mpack` files have been removed.
   - `scripts/gen_eval_files.lua` now instead uses `scripts/cdoc_parser.lua` directly.
- Text wrapping is implemented in `scripts/text_utils.lua` and appears to produce more consistent results (the main contributer to the diff of this change).
2024-02-27 14:41:17 +00:00

35 lines
1.3 KiB
Lua

--- @meta
-- luacheck: no unused args
--- @brief Vim regexes can be used directly from Lua. Currently they only allow
--- matching within a single line.
--- Parse the Vim regex {re} and return a regex object. Regexes are "magic"
--- and case-sensitive by default, regardless of 'magic' and 'ignorecase'.
--- They can be controlled with flags, see |/magic| and |/ignorecase|.
--- @param re string
--- @return vim.regex
function vim.regex(re) end
--- @class vim.regex
local regex = {} -- luacheck: no unused
--- Match the string against the regex. If the string should match the regex
--- precisely, surround the regex with `^` and `$`. If there was a match, the
--- byte indices for the beginning and end of the match are returned. When
--- there is no match, `nil` is returned. Because any integer is "truthy",
--- `regex:match_str()` can be directly used as a condition in an if-statement.
--- @param str string
function regex:match_str(str) end
--- Match line {line_idx} (zero-based) in buffer {bufnr}. If {start} and {end}
--- are supplied, match only this byte index range. Otherwise see
--- |regex:match_str()|. If {start} is used, then the returned byte indices
--- will be relative {start}.
--- @param bufnr integer
--- @param line_idx integer
--- @param start? integer
--- @param end_? integer
function regex:match_line(bufnr, line_idx, start, end_) end