neovim/runtime/lua/vim/keymap.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

127 lines
3.8 KiB
Lua

local keymap = {}
--- Adds a new |mapping|.
--- Examples:
---
--- ```lua
--- -- Map to a Lua function:
--- vim.keymap.set('n', 'lhs', function() print("real lua function") end)
--- -- Map to multiple modes:
--- vim.keymap.set({'n', 'v'}, '<leader>lr', vim.lsp.buf.references, { buffer = true })
--- -- Buffer-local mapping:
--- vim.keymap.set('n', '<leader>w', "<cmd>w<cr>", { silent = true, buffer = 5 })
--- -- Expr mapping:
--- vim.keymap.set('i', '<Tab>', function()
--- return vim.fn.pumvisible() == 1 and "<C-n>" or "<Tab>"
--- end, { expr = true })
--- -- <Plug> mapping:
--- vim.keymap.set('n', '[%%', '<Plug>(MatchitNormalMultiBackward)')
--- ```
---
---@param mode string|table Mode short-name, see |nvim_set_keymap()|.
--- Can also be list of modes to create mapping on multiple modes.
---@param lhs string Left-hand side |{lhs}| of the mapping.
---@param rhs string|function Right-hand side |{rhs}| of the mapping, can be a Lua function.
---
---@param opts table|nil Table of |:map-arguments|.
--- - Same as |nvim_set_keymap()| {opts}, except:
--- - "replace_keycodes" defaults to `true` if "expr" is `true`.
--- - "noremap": inverse of "remap" (see below).
--- - Also accepts:
--- - "buffer": (integer|boolean) Creates buffer-local mapping, `0` or `true`
--- for current buffer.
--- - "remap": (boolean) Make the mapping recursive. Inverse of "noremap".
--- Defaults to `false`.
---@see |nvim_set_keymap()|
---@see |maparg()|
---@see |mapcheck()|
---@see |mapset()|
function keymap.set(mode, lhs, rhs, opts)
vim.validate({
mode = { mode, { 's', 't' } },
lhs = { lhs, 's' },
rhs = { rhs, { 's', 'f' } },
opts = { opts, 't', true },
})
opts = vim.deepcopy(opts or {}, true)
---@cast mode string[]
mode = type(mode) == 'string' and { mode } or mode
if opts.expr and opts.replace_keycodes ~= false then
opts.replace_keycodes = true
end
if opts.remap == nil then
-- default remap value is false
opts.noremap = true
else
-- remaps behavior is opposite of noremap option.
opts.noremap = not opts.remap
opts.remap = nil ---@type boolean?
end
if type(rhs) == 'function' then
opts.callback = rhs
rhs = ''
end
if opts.buffer then
local bufnr = opts.buffer == true and 0 or opts.buffer --[[@as integer]]
opts.buffer = nil ---@type integer?
for _, m in ipairs(mode) do
vim.api.nvim_buf_set_keymap(bufnr, m, lhs, rhs, opts)
end
else
opts.buffer = nil
for _, m in ipairs(mode) do
vim.api.nvim_set_keymap(m, lhs, rhs, opts)
end
end
end
--- Remove an existing mapping.
--- Examples:
---
--- ```lua
--- vim.keymap.del('n', 'lhs')
---
--- vim.keymap.del({'n', 'i', 'v'}, '<leader>w', { buffer = 5 })
--- ```
---
---@param modes string|string[]
---@param lhs string
---@param opts table|nil A table of optional arguments:
--- - "buffer": (integer|boolean) Remove a mapping from the given buffer.
--- When `0` or `true`, use the current buffer.
---@see |vim.keymap.set()|
---
function keymap.del(modes, lhs, opts)
vim.validate({
mode = { modes, { 's', 't' } },
lhs = { lhs, 's' },
opts = { opts, 't', true },
})
opts = opts or {}
modes = type(modes) == 'string' and { modes } or modes
local buffer = false ---@type false|integer
if opts.buffer ~= nil then
buffer = opts.buffer == true and 0 or opts.buffer --[[@as integer]]
end
if buffer == false then
for _, mode in ipairs(modes) do
vim.api.nvim_del_keymap(mode, lhs)
end
else
for _, mode in ipairs(modes) do
vim.api.nvim_buf_del_keymap(buffer, mode, lhs)
end
end
end
return keymap