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944 lines (824 loc) · 35 KB
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-- MIT License Copyright (c) 2022 Evgeni Chasnovski
-- Documentation ==============================================================
--- Jump within visible lines via iterative label filtering.
---
--- Features:
--- - Make jump by iterative filtering of possible, equally considered jump
--- spots until there is only one. Filtering is done by typing a label
--- character that is visualized at jump spot.
--- - Customizable:
--- - Way of computing possible jump spots with opinionated default.
--- - Characters used to label jump spots during iterative filtering.
--- - Action hooks to be executed at certain events during jump.
--- - Allowed windows: current and/or not current.
--- - Allowed lines: whether to process blank or folded lines, lines
--- before/at/after cursor line, etc. Example: user can configure to look
--- for spots only inside current window at or after cursor line.
--- Example: user can configure to look for word starts only inside current
--- window at or after cursor line with 'j' and 'k' labels performing some
--- action after jump.
--- - Works in Visual and Operator-pending (with dot-repeat) modes.
--- - Preconfigured ways of computing jump spots (see |MiniJump2d.builtin_opts|).
--- - Works with multibyte characters.
---
--- General overview of how jump is intended to be performed:
--- - Lock eyes on desired location ("spot") recognizable by future jump.
--- Should be within visible lines at place where cursor can be placed.
--- - Initiate jump. Either by custom keybinding or with a call to
--- |MiniJump2d.start()| (allows customization options). This will highlight
--- all possible jump spots with their labels (letters from "a" to "z" by
--- default). For more details, read |MiniJump2d.start()| and |MiniJump2d.config|.
--- - Type character that appeared over desired location. If its label was
--- unique, jump is performed. If it wasn't unique, possible jump spots are
--- filtered to those having the same label character.
--- - Repeat previous step until there is only one possible jump spot or type `<CR>`
--- to jump to first available jump spot. Typing anything else stops jumping
--- without moving cursor.
---
--- # Setup~
---
--- This module needs a setup with `require('mini.jump2d').setup({})` (replace
--- `{}` with your `config` table). It will create global Lua table
--- `MiniJump2d` which you can use for scripting or manually (with
--- `:lua MiniJump2d.*`).
---
--- See |MiniJump2d.config| for available config settings.
---
--- You can override runtime config settings locally to buffer inside
--- `vim.b.minijump2d_config` which should have same structure as
--- `MiniJump2d.config`. See |mini.nvim-buffer-local-config| for more details.
---
--- # Example usage~
---
--- - Modify default jumping to use only current window at or after cursor line: >
--- require('mini.jump2d').setup({
--- allowed_lines = { cursor_before = false },
--- allowed_windows = { not_current = false },
--- })
--- - `lua MiniJump2d.start(MiniJump2d.builtin_opts.line_start)` - jump to word
--- start using combination of options supplied in |MiniJump2d.config| and
--- |MiniJump2d.builtin_opts.line_start|.
--- - `lua MiniJump2d.start(MiniJump2d.builtin_opts.single_character)` - jump
--- to single character typed after executing this command.
--- - See more examples in |MiniJump2d.start| and |MiniJump2d.builtin_opts|.
---
--- # Comparisons~
---
--- - 'phaazon/hop.nvim':
--- - Both are fast, customizable, and extensible (user can write their own
--- ways to define jump spots).
--- - Both have several builtin ways to specify type of jump (word start,
--- line start, one character or query based on user input). 'hop.nvim'
--- does that by exporting many targeted Neovim commands, while this
--- module has preconfigured basic options leaving others to
--- customization with Lua code (see |MiniJump2d.builtin_opts|).
--- - 'hop.nvim' computes labels (called "hints") differently. Contrary to
--- this module deliberately not having preference of one jump spot over
--- another, 'hop.nvim' uses specialized algorithm that produces sequence
--- of keys in a slightly biased manner: some sequences are intentionally
--- shorter than the others (leading to fewer average keystrokes). They
--- are put near cursor (by default) and highlighted differently. Final
--- order of sequences is based on distance to the cursor.
--- - 'hop.nvim' visualizes labels differently. It is designed to show
--- whole sequences at once, while this module intentionally shows only
--- current one at a time.
--- - 'mini.jump2d' has opinionated default algorithm of computing jump
--- spots. See |MiniJump2d.default_spotter|.
---
--- # Highlight groups~
---
--- * `MiniJump2dSpot` - highlighting of jump spots. By default it uses label
--- with highest contrast while not being too visually demanding: white on
--- black for dark 'background', black on white for light. If it doesn't
--- suit your liking, try couple of these alternatives (or choose your own,
--- of course):
--- - `hi MiniJump2dSpot gui=reverse` - reverse underlying highlighting (more
--- colorful while being visible in any colorscheme).
--- - `hi MiniJump2dSpot gui=bold,italic` - bold italic.
--- - `hi MiniJump2dSpot gui=undercurl guisp=red` - red undercurl.
---
--- To change any highlight group, modify it directly with |:highlight|.
---
--- # Disabling~
---
--- To disable, set `g:minijump2d_disable` (globally) or `b:minijump2d_disable`
--- (for a buffer) to `v:true`. Considering high number of different scenarios
--- and customization intentions, writing exact rules for disabling module's
--- functionality is left to user. See |mini.nvim-disabling-recipes| for common
--- recipes.
---@tag mini.jump2d
---@tag MiniJump2d
-- Module definition ==========================================================
local MiniJump2d = {}
local H = {}
--- Module setup
---
---@param config table Module config table. See |MiniJump2d.config|.
---
---@usage `require('mini.jump2d').setup({})` (replace `{}` with your `config` table)
MiniJump2d.setup = function(config)
-- Export module
_G.MiniJump2d = MiniJump2d
-- Setup config
config = H.setup_config(config)
-- Apply config
H.apply_config(config)
-- Corrections for default `<CR>` mapping to not interfer with popular usages
if config.mappings.start_jumping == '<CR>' then
vim.api.nvim_exec(
[[augroup MiniJump2d
au!
autocmd FileType qf nnoremap <buffer> <CR> <CR>
autocmd CmdwinEnter * nnoremap <buffer> <CR> <CR>
augroup END]],
false
)
end
-- Create highlighting
local hl_cmd = 'hi default MiniJump2dSpot guifg=white guibg=black gui=bold,nocombine'
if vim.o.background == 'light' then
hl_cmd = 'hi default MiniJump2dSpot guifg=black guibg=white gui=bold,nocombine'
end
vim.cmd(hl_cmd)
end
--- Module config
---
--- Default values:
---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)
---@text # Options~
---
--- ## Spotter function~
---
--- Actual computation of possible jump spots is done through spotter function.
--- It should have the following arguments:
--- - `line_num` is a line number inside buffer.
--- - `args` - table with additional arguments:
--- - {win_id} - identifier of a window where input line number is from.
--- - {win_id_init} - identifier of a window which was current when
--- `MiniJump2d.start()` was called.
---
--- Its output is a list of byte-indexed positions that should be considered as
--- possible jump spots for this particular line in this particular window.
--- Note: for a more aligned visualization this list should be (but not
--- strictly necessary) sorted increasingly.
---
--- Note: spotter function is always called with `win_id` window being
--- "temporary current" (see |nvim_win_call|). This allows using builtin
--- Vimscript functions that operate only inside current window.
---
--- ## Allowed lines~
---
--- Option `allowed_lines` controls which lines will be used for computing
--- possible jump spots:
--- - If `blank` or `fold` is `true`, it is possible to jump to first column of blank
--- line (determined by |prevnonblank|) or first folded one (determined by
--- |foldclosed|) respectively. Otherwise they are skipped. These lines are
--- not processed by spotter function even if the option is `true`.
--- - If `cursor_before`, (`cursor_at`, `cursor_after`) is `true`, lines before
--- (at, after) cursor line of all processed windows are forwarded to spotter
--- function. Otherwise, they don't. This allows control of jump "direction".
---
--- ## Hooks~
---
--- Following hook functions can be used to further tweak jumping experience:
--- - `before_start` - called without arguments first thing when jump starts.
--- One of the possible use cases is to ask for user input and update spotter
--- function with it.
--- - `after_jump` - called after jump was actually done. Useful to make
--- post-adjustments (like move cursor to first non-whitespace character).
MiniJump2d.config = {
-- Function producing jump spots (byte indexed) for a particular line.
-- For more information see |MiniJump2d.start|.
-- If `nil` (default) - use |MiniJump2d.default_spotter|
spotter = nil,
-- Characters used for labels of jump spots (in supplied order)
labels = 'abcdefghijklmnopqrstuvwxyz',
-- Which lines are used for computing spots
allowed_lines = {
blank = true, -- Blank line (not sent to spotter even if `true`)
cursor_before = true, -- Lines before cursor line
cursor_at = true, -- Cursor line
cursor_after = true, -- Lines after cursor line
fold = true, -- Start of fold (not sent to spotter even if `true`)
},
-- Which windows from current tabpage are used for visible lines
allowed_windows = {
current = true,
not_current = true,
},
-- Functions to be executed at certain events
hooks = {
before_start = nil, -- Before jump start
after_jump = nil, -- After jump was actually done
},
-- Module mappings. Use `''` (empty string) to disable one.
mappings = {
start_jumping = '<CR>',
},
}
--minidoc_afterlines_end
-- Module functionality =======================================================
--- Start jumping
---
--- Compute possible jump spots, visualize them and wait for iterative filtering.
---
--- First computation of possible jump spots~
---
--- - Process allowed windows (current and/or not current; controlled by
--- `allowed_windows` option) by visible lines from top to bottom. For each
--- one see if it is allowed (controlled by `allowed_lines` option). If not
--- allowed, then do nothing. If allowed and should be processed by
--- `spotter`, process it.
--- - Apply spotter function from `spotter` option for each appropriate line
--- and concatenate outputs. This means that eventual order of jump spots
--- aligns with lexicographical order within "window id" - "line number" -
--- "position in `spotter` output" tuples.
--- - For each possible jump compute its label: a single character from
--- `labels` option used to filter jump spots. Each possible label character
--- might be used more than once to label several "consecutive" jump spots.
--- It is done in an optimal way under assumption of no preference of one
--- spot over another. Basically, it means "use all labels at each step of
--- iterative filtering as equally as possible".
---
--- Visualization~
---
--- Current label for each possible jump spot is shown at that position
--- overriding everything underneath it.
---
--- Iterative filtering~
---
--- Labels of possible jump spots are computed in order to use them as equally
--- as possible.
---
--- Example:
--- - With `abc` as `labels` option, initial labels for 10 possible jumps
--- are "aaaabbbccc". As there are 10 spots which should be "coded" with 3
--- symbols, at least 2 symbols need 3 steps to filter them out. With current
--- implementation those are always the "first ones".
--- - After typing `a`, it filters first four jump spots and recomputes its
--- labels to be "aabc".
--- - After typing `a` again, it filters first two spots and recomputes its
--- labels to be "ab".
--- - After typing either `a` or `b` it filters single spot and makes jump.
---
--- With default 26 labels for most real-world cases 2 steps is enough for
--- default spotter function. Rarely 3 steps are needed with several windows.
---
---@param opts table Configuration of jumping, overriding global and buffer
--- local values.config|. Has the same structure as |MiniJump2d.config|
--- without <mappings> field. Extra allowed fields:
--- - <hl_group> - which highlight group to use (default: "MiniJump2dSpot").
---
---@usage - Start default jumping:
--- `MiniJump2d.start()`
--- - Jump to word start:
--- `MiniJump2d.start(MiniJump2d.builtin_opts.word_start)`
--- - Jump to single character from user input (follow by typing one character):
--- `MiniJump2d.start(MiniJump2d.builtin_opts.single_character)`
--- - Jump to first character of punctuation group only inside current window
--- which is placed at cursor line; visualize with 'hl-Search': >
--- MiniJump2d.start({
--- spotter = MiniJump2d.gen_pattern_spotter('%p+'),
--- allowed_lines = { cursor_before = false, cursor_after = false },
--- allowed_windows = { not_current = false },
--- hl_group = 'Search'
--- })
---<
---@seealso |MiniJump2d.config|
MiniJump2d.start = function(opts)
if H.is_disabled() then return end
opts = opts or {}
-- Apply `before_start` before `tbl_deep_extend` to allow it modify options
-- inside it (notably `spotter`). Example: `builtins.single_character`.
local before_start = (opts.hooks or {}).before_start
or ((vim.b.minijump2d_config or {}).hooks or {}).before_start
or MiniJump2d.config.hooks.before_start
if before_start ~= nil then before_start() end
opts = H.get_config(opts)
opts.spotter = opts.spotter or MiniJump2d.default_spotter
opts.hl_group = opts.hl_group or 'MiniJump2dSpot'
local spots = H.spots_compute(opts)
spots = H.spots_add_label(spots, opts)
H.spots_show(spots, opts)
H.cache.spots = spots
-- Defer advancing jump to allow drawing before invoking `getcharstr()`.
-- This is much faster than having to call `vim.cmd('redraw')`.
-- Don't do that in Operator-pending mode because it doesn't work otherwise.
if H.is_operator_pending() then
H.advance_jump(opts)
else
vim.defer_fn(function() H.advance_jump(opts) end, 0)
end
end
--- Stop jumping
MiniJump2d.stop = function()
H.spots_unshow()
H.cache.spots = nil
H.cache.msg_shown = false
vim.cmd('redraw')
if H.cache.is_in_getcharstr then vim.api.nvim_input('<C-c>') end
end
--- Generate spotter for Lua pattern
---
---@param pattern string|nil Lua pattern. Default: `'[^%s%p]+'` which matches group
--- of "non-whitespace non-punctuation characters" (basically a way of saying
--- "group of alphanumeric characters" that works with multibyte characters).
---@param side string|nil Which side of pattern match should be considered as
--- jumping spot. Should be one of 'start' (start of match, default), 'end'
--- (inclusive end of match), or 'none' (match for spot is done manually
--- inside pattern with plain `()` matching group).
---
---@usage - Match any punctuation:
--- `MiniJump2d.gen_pattern_spotter('%p')`
--- - Match first from line start non-whitespace character:
--- `MiniJump2d.gen_pattern_spotter('^%s*%S', 'end')`
--- - Match start of last word:
--- `MiniJump2d.gen_pattern_spotter('[^%s%p]+
8BD0
[%s%p]-$', 'start')`
--- - Match letter followed by another letter (example of manual matching
--- inside pattern):
--- `MiniJump2d.gen_pattern_spotter('%a()%a', 'none')`
MiniJump2d.gen_pattern_spotter = function(pattern, side)
-- Don't use `%w` to account for multibyte characters
pattern = pattern or '[^%s%p]+'
side = side or 'start'
-- Process anchored patterns separately because:
-- - `gmatch()` doesn't work if pattern start with `^`.
-- - Manual adding of `()` will conflict with anchors.
local is_anchored = pattern:sub(1, 1) == '^' or pattern:sub(-1, -1) == '$'
if is_anchored then
return function(line_num, args)
local line = vim.fn.getline(line_num)
local s, e, m = line:find(pattern)
return { ({ ['start'] = s, ['end'] = e, ['none'] = m })[side] }
end
end
-- Handle `side = 'end'` later by appending length of match to match start.
-- This, unlike appending `()` to end of pattern, makes output spot to be
-- inside matched pattern and on its exact right.
-- Having `(%s)` for `side = 'none'` is for compatibility with later `gmatch`
local pattern_template = side == 'none' and '(%s)' or '(()%s)'
pattern = pattern_template:format(pattern)
return function(line_num, args)
local line = vim.fn.getline(line_num)
local res = {}
-- NOTE: maybe a more straightforward approach would be a series of
-- `line:find(original_pattern, init)` with moving `init`, but it has some
-- weird behavior with quantifiers.
-- For example: `string.find(' --', '%s*', 4)` returns `4 3`.
for whole, spot in string.gmatch(line, pattern) do
-- Possibly correct spot to be index of last matched position
if side == 'end' then spot = spot + math.max(whole:len() - 1, 0) end
-- Ensure that index is strictly within line length (which can be not
-- true in case of weird pattern, like when using frontier `%f[%W]`)
spot = math.min(math.max(spot, 0), line:len())
-- Unify how spot is chosen in case of multibyte characters
local utf_index = vim.str_utfindex(line, spot)
spot = vim.str_byteindex(line, utf_index)
-- Add spot only if it referces new actually visible column
if spot ~= res[#res] then table.insert(res, spot) end
end
return res
end
end
--- Default spotter function
---
--- Spot is possible for jump if it is one of the following:
--- - Start or end of non-whitespace character group.
--- - Alphanumeric character followed or preceeded by punctuation (useful for
--- snake case names).
--- - Start of uppercase character group (useful for camel case names). Usually
--- only Lating alphabet is recognized due to Lua patterns shortcomings.
---
--- These rules are derived in an attempt to balance between two intentions:
--- - Allow as much useful jumping spots as possible.
--- - Make labeled jump spots easily distinguishable.
---
--- Usually takes from 2 to 3 keystrokes to get to destination.
MiniJump2d.default_spotter = (function()
local nonblank_start = MiniJump2d.gen_pattern_spotter('%S+', 'start')
local nonblank_end = MiniJump2d.gen_pattern_spotter('%S+', 'end')
-- Use `[^%s%p]` as "alphanumeric" to allow working with multibyte characters
local alphanum_before_punct = MiniJump2d.gen_pattern_spotter('[^%s%p]%p', 'start')
local alphanum_after_punct = MiniJump2d.gen_pattern_spotter('%p[^%s%p]', 'end')
-- NOTE: works only with Latin alphabet
local upper_start = MiniJump2d.gen_pattern_spotter('%u+', 'start')
return function(line_num, args)
local res_1 = H.merge_unique(nonblank_start(line_num, args), nonblank_end(line_num, args))
local res_2 = H.merge_unique(alphanum_before_punct(line_num, args), alphanum_after_punct(line_num, args))
local res = H.merge_unique(res_1, res_2)
return H.merge_unique(res, upper_start(line_num, args))
end
end)()
--- Table with builtin `opts` values for |MiniJump2d.start()|
---
--- Each element of table is itself a table defining one or several options for
--- `MiniJump2d.start()`. Read help description to see which options it defines
--- (like in |MiniJump2d.builtin_opts.line_start|).
---
---@usage Using |MiniJump2d.builtin_opts.line_start| as example:
--- - Command:
--- `:lua MiniJump2d.start(MiniJump2d.builtin_opts.line_start)`
--- - Custom mapping: >
--- vim.api.nvim_set_keymap(
--- 'n', '<CR>',
--- '<Cmd>lua MiniJump2d.start(MiniJump2d.builtin_opts.line_start)<CR>', {}
--- )
--- - Inside |MiniJump2d.setup| (make sure to use all defined options): >
--- local jump2d = require('mini.jump2d')
--- local jump_line_start = jump2d.builtin_opts.line_start
--- jump2d.setup({
--- spotter = jump_line_start.spotter,
--- hooks = { after_jump = jump_line_start.hooks.after_jump }
--- })
--- <
MiniJump2d.builtin_opts = {}
--- Jump with |MiniJump2d.default_spotter()|
---
--- Defines `spotter`.
MiniJump2d.builtin_opts.default = { spotter = MiniJump2d.default_spotter }
--- Jump to line start
---
--- Defines `spotter` and `hooks.after_jump`.
MiniJump2d.builtin_opts.line_start = {
spotter = function(line_num, args) return { 1 } end,
hooks = {
after_jump = function()
-- Move to first non-blank character
vim.cmd('normal! ^')
end,
},
}
--- Jump to word start
---
--- Defines `spotter`.
MiniJump2d.builtin_opts.word_start = { spotter = MiniJump2d.gen_pattern_spotter('[^%s%p]+') }
-- Produce `opts` which modifies spotter based on user input
local function user_input_opts(input_fun)
local res = {
spotter = function() return {} end,
allowed_lines = { blank = false, fold = false },
}
res.hooks = {
before_start = function()
local input = input_fun()
if input == nil then
res.spotter = function() return {} end
else
local pattern = vim.pesc(input)
res.spotter = MiniJump2d.gen_pattern_spotter(pattern)
end
end,
}
return res
end
--- Jump to single character taken from user input
---
--- Defines `spotter`, `allowed_lines.blank`, `allowed_lines.fold`, and
--- `hooks.before_start`.
MiniJump2d.builtin_opts.single_character = user_input_opts(
function() return H.getcharstr('Enter single character to search') end
)
--- Jump to query taken from user input
---
--- Defines `spotter`, `allowed_lines.blank`, `allowed_lines.fold`, and
--- `hooks.before_start`.
MiniJump2d.builtin_opts.query = user_input_opts(function() return H.input('Enter query to search') end)
-- Helper data ================================================================
-- Module default config
H.default_config = MiniJump2d.config
-- Namespaces to be used withing module
H.ns_id = {
spots = vim.api.nvim_create_namespace('MiniJump2dSpots'),
input = vim.api.nvim_create_namespace('MiniJump2dInput'),
}
-- Table with current relevant data:
H.cache = {
-- Array of shown spots
spots = nil,
-- Indicator of whether Neovim is currently in "getcharstr" mode
is_in_getcharstr = false,
-- Whether helper message was shown
msg_shown = false,
}
-- Table with special keys
H.keys = {
esc = vim.api.nvim_replace_termcodes('<Esc>', true, true, true),
cr = vim.api.nvim_replace_termcodes('<CR>', true, true, true),
block_operator_pending = vim.api.nvim_replace_termcodes('no<C-V>', true, true, true),
}
-- Helper functionality =======================================================
-- Settings -------------------------------------------------------------------
H.setup_config = function(config)
-- General idea: if some table elements are not present in user-supplied
-- `config`, take them from default config
vim.validate({ config = { config, 'table', true } })
config = vim.tbl_deep_extend('force', H.default_config, config or {})
vim.validate({
spotter = { config.spotter, 'function', true },
labels = { config.labels, 'string' },
allowed_lines = { config.allowed_lines, 'table' },
allowed_windows = { config.allowed_windows, 'table' },
hooks = { config.hooks, 'table' },
mappings = { config.mappings, 'table' },
})
vim.validate({
['allowed_lines.blank'] = { config.allowed_lines.blank, 'boolean' },
['allowed_lines.cursor_before'] = { config.allowed_lines.cursor_before, 'boolean' },
['allowed_lines.cursor_at'] = { config.allowed_lines.cursor_at, 'boolean' },
['allowed_lines.cursor_after'] = { config.allowed_lines.cursor_after, 'boolean' },
['allowed_lines.fold'] = { config.allowed_lines.fold, 'boolean' },
['allowed_windows.current'] = { config.allowed_windows.current, 'boolean' },
['allowed_windows.not_current'] = { config.allowed_windows.not_current, 'boolean' },
['hooks.before_start'] = { config.hooks.before_start, 'function', true },
['hooks.after_jump'] = { config.hooks.after_jump, 'function', true },
['mappings.start_jumping'] = { config.mappings.start_jumping, 'string' },
})
return config
end
H.apply_config = function(config)
MiniJump2d.config = config
-- Apply mappings
local keymap = config.mappings.start_jumping
H.map('n', keymap, '<Cmd>lua MiniJump2d.start()<CR>', { desc = 'Start 2d jumping' })
H.map('x', keymap, '<Cmd>lua MiniJump2d.start()<CR>', { desc = 'Start 2d jumping' })
H.map('o', keymap, '<Cmd>lua MiniJump2d.start()<CR>', { desc = 'Start 2d jumping' })
end
H.is_disabled = function() return vim.g.minijump2d_disable == true or vim.b.minijump2d_disable == true end
H.get_config = function(config)
return vim.tbl_deep_extend('force', MiniJump2d.config, vim.b.minijump2d_config or {}, config or {})
end
-- Jump spots -----------------------------------------------------------------
H.spots_compute = function(opts)
local win_id_init = vim.api.nvim_get_current_win()
local win_id_arr = vim.tbl_filter(function(win_id)
if win_id == win_id_init then return opts.allowed_windows.current end
return opts.allowed_windows.not_current
end, H.tabpage_list_wins(0))
local res = {}
for _, win_id in ipairs(win_id_arr) do
vim.api.nvim_win_call(win_id, function()
local cursor_pos = vim.api.nvim_win_get_cursor(win_id)
local spotter_args = { win_id = win_id, win_id_init = win_id_init }
local buf_id = vim.api.nvim_win_get_buf(win_id)
-- Use all currently visible lines
for i = vim.fn.line('w0'), vim.fn.line('w$') do
local columns = H.spot_find_in_line(i, spotter_args, opts, cursor_pos)
-- Use all returned columns for particular line
for _, col in ipairs(columns) do
table.insert(res, { line = i, column = col, buf_id = buf_id, win_id = win_id })
end
end
end)
end
return res
end
H.spots_add_label = function(spots, opts)
local label_tbl = vim.split(opts.labels, '')
-- Example: with 3 label characters labels should evolve with progressing
-- number of spots like this: 'a', 'ab', 'abc', 'aabc', 'aabbc', 'aabbcc',
-- 'aaabbcc', 'aaabbbcc', 'aaabbbccc', etc.
local n_spots, n_label_chars = #spots, #label_tbl
local base, extra = math.floor(n_spots / n_label_chars), n_spots % n_label_chars
local label_id, cur_label_count = 1, 0
local label_max_count = base + (label_id <= extra and 1 or 0)
for _, s in ipairs(spots) do
s.label = label_tbl[label_id]
cur_label_count = cur_label_count + 1
if cur_label_count >= label_max_count then
label_id, cur_label_count = label_id + 1, 0
label_max_count = base + (label_id <= extra and 1 or 0)
end
end
return spots
end
H.spots_show = function(spots, opts)
spots = spots or H.cache.spots or {}
if #spots == 0 then
H.message('No spots to show.')
return
end
for _, extmark in ipairs(H.spots_to_extmarks(spots)) do
local extmark_opts = {
hl_mode = 'combine',
-- Use very high priority
priority = 1000,
virt_text = { { extmark.text, opts.hl_group } },
virt_text_pos = 'overlay',
}
pcall(vim.api.nvim_buf_set_extmark, extmark.buf_id, H.ns_id.spots, extmark.line, extmark.col, extmark_opts)
end
-- Need to redraw in Operator-pending mode, because otherwise extmarks won't
-- be shown and deferring disables this mode.
if H.is_operator_pending() then vim.cmd('redraw') end
end
H.spots_unshow = function(spots)
spots = spots or H.cache.spots or {}
-- Remove spot extmarks from all buffers they are present
local buf_ids = {}
for _, s in ipairs(spots) do
buf_ids[s.buf_id] = true
end
for _, buf_id in ipairs(vim.tbl_keys(buf_ids)) do
pcall(vim.api.nvim_buf_clear_namespace, buf_id, H.ns_id.spots, 0, -1)
end
end
--- Convert consecutive spots into single extmark
---
--- This considerably increases performance in case of many spots.
---@private
H.spots_to_extmarks = function(spots)
if #spots == 0 then return {} end
local res = {}
local buf_id, line, col = spots[1].buf_id, spots[1].line - 1, spots[1].column - 1
local extmark_chars = {}
local cur_col = col
for _, s in ipairs(spots) do
local is_within_same_extmark = s.buf_id == buf_id and s.line == (line + 1) and s.column == (cur_col + 1)
if not is_within_same_extmark then
table.insert(res, { buf_id = buf_id, col = col, line = line, text = table.concat(extmark_chars) })
buf_id, line, col = s.buf_id, s.line - 1, s.column - 1
extmark_chars = {}
end
table.insert(extmark_chars, s.label)
cur_col = s.column
end
table.insert(res, { buf_id = buf_id, col = col, line = line, text = table.concat(extmark_chars) })
return res
end
H.spot_find_in_line = function(line_num, spotter_args, opts, cursor_pos)
local allowed = opts.allowed_lines
-- Adjust for cursor line
local cur_line = cursor_pos[1]
if
(not allowed.cursor_before and line_num < cur_line)
or (not allowed.cursor_at and line_num == cur_line)
or (not allowed.cursor_after and line_num > cur_line)
then
return {}
end
-- Process folds
local fold_indicator = vim.fn.foldclosed(line_num)
if fold_indicator ~= -1 then return (allowed.fold and fold_indicator == line_num) and { 1 } or {} end
-- Process blank lines
if vim.fn.prevnonblank(line_num) ~= line_num then return allowed.blank and { 1 } or {} end
-- Finally apply spotter
return opts.spotter(line_num, spotter_args)
end
-- Jump state -----------------------------------------------------------------
H.advance_jump = function(opts)
local label_tbl = vim.split(opts.labels, '')
local spots = H.cache.spots
if type(spots) ~= 'table' or #spots < 1 then
H.spots_unshow(spots)
H.cache.spots = nil
return
end
local key = H.getcharstr('Enter encoding symbol to advance jump')
if vim.tbl_contains(label_tbl, key) then
H.spots_unshow(spots)
spots = vim.tbl_filter(function(x) return x.label == key end, spots)
if #spots > 1 then
spots = H.spots_add_label(spots, opts)
H.spots_show(spots, opts)
H.cache.spots = spots
-- Defer advancing jump to allow drawing before invoking `getcharstr()`.
-- This is much faster than having to call `vim.cmd('redraw')`. Don't do that
-- in Operator-pending mode because it doesn't work otherwise.
if H.is_operator_pending() then
H.advance_jump(opts)
else
vim.defer_fn(function() H.advance_jump(opts) end, 0)
return
end
end
end
if #spots == 1 or key == H.keys.cr then
-- Add to jumplist
vim.cmd('normal! m`')
local first_spot = spots[1]
vim.api.nvim_set_current_win(first_spot.win_id)
vim.api.nvim_win_set_cursor(first_spot.win_id, { first_spot.line, first_spot.column - 1 })
-- Possibly unfold to see cursor
vim.cmd('normal! zv')
if opts.hooks.after_jump ~= nil then opts.hooks.after_jump() end
end
MiniJump2d.stop()
end
-- Utilities ------------------------------------------------------------------
H.echo = function(msg, is_important)
-- Construct message chunks
msg = type(msg) == 'string' and { { msg } } or msg
table.insert(msg, 1, { '(mini.jump2d) ', 'WarningMsg' })
-- Avoid hit-enter-prompt
local max_width = vim.o.columns * math.max(vim.o.cmdheight - 1, 0) + vim.v.echospace
local chunks, tot_width = {}, 0
for _, ch in ipairs(msg) do
local new_ch = { vim.fn.strcharpart(ch[1], 0, max_width - tot_width), ch[2] }
table.insert(chunks, new_ch)
tot_width = tot_width + vim.fn.strdisplaywidth(new_ch[1])
if tot_width >= max_width then break end
end
-- Echo. Force redraw to ensure that it is effective (`:h echo-redraw`)
vim.cmd([[echo '' | redraw]])
vim.api.nvim_echo(chunks, is_important, {})
end
H.unecho = function()
if H.cache.msg_shown then vim.cmd([[echo '' | redraw]]) end
end
H.message = function(msg) H.echo(msg, true) end
H.is_operator_pending =
function() return vim.tbl_contains({ 'no', 'noV', H.keys.block_operator_pending }, vim.fn.mode(1)) end
H.getcharstr = function(msg)
local needs_help_msg = true
if msg ~= nil then
vim.defer_fn(function()
if not needs_help_msg then return end
H.echo(msg)
H.cache.msg_shown = true
end, 1000)
end
H.cache.is_in_getcharstr = true
local _, char = pcall(vim.fn.getcharstr)
H.cache.is_in_getcharstr = false
needs_help_msg = false
H.unecho()
return char
end
H.input = function(prompt, text)
-- Distinguish between `<C-c>`, `<Esc>`, and first `<CR>`
local on_key = vim.on_key or vim.register_keystroke_callback
local was_cancelled = false
on_key(function(key)
if key == H.keys.esc then was_cancelled = true end
end, H.ns_id.input)
-- Ask for input
local opts = { prompt = '(mini.jump2d) ' .. prompt .. ': ', default = text or '' }
-- Use `pcall` to allow `<C-c>` to cancel user input
local ok, res = pcall(vim.fn.input, opts)
-- Stop key listening
on_key(nil, H.ns_id.input)
if not ok or was_cancelled then return end
return res
end
--- This ensures order of windows based on their layout
---
--- This is already done by default in `nvim_tabpage_list_wins()`, but is not
--- documented, so can break any time.
---
---@private
H.tabpage_list_wins = function(tabpage_id)
local wins = vim.api.nvim_tabpage_list_wins(tabpage_id)
local wins_pos = {}
for _, win_id in ipairs(wins) do
local pos = vim.api.nvim_win_get_position(win_id)
local config = vim.api.nvim_win_get_config(win_id)
wins_pos[win_id] = { row = pos[1], col = pos[2], zindex = config.zindex or 0 }
end
-- Sort windows by their position: top to bottom, left to right, low to high
table.sort(wins, function(a, b)
-- Put higher window further to have them processed later. This means that
-- in case of same buffer in floating and underlying regular windows,
-- floating will have "the latest" extmarks (think like `MiniMisc.zoom()`).
if wins_pos[a].zindex < wins_pos[b].zindex then return true end
if wins_pos[a].zindex > wins_pos[b].zindex then return false end
if wins_pos[a].col < wins_pos[b].col then return true end
if wins_pos[a].col > wins_pos[b].col then return false end
return wins_pos[a].row < wins_pos[b].row
end)
return wins
end
H.map = function(mode, key, rhs, opts)
if key == '' then return end
opts = vim.tbl_deep_extend('force', { noremap = true, silent = true }, opts or {})
-- Use mapping description only in Neovim>=0.7
if vim.fn.has('nvim-0.7') == 0 then opts.desc = nil end
vim.api.nvim_set_keymap(mode, key, rhs, opts)
end
H.merge_unique = function(tbl_1, tbl_2)
if not (type(tbl_1) == 'table' and type(tbl_2) == 'table') then return end
local n_1, n_2 = #tbl_1, #tbl_2
local res, i, j = {}, 1, 1
local to_add
while i <= n_1 and j <= n_2 do
if tbl_1[i] < tbl_2[j] then
to_add = tbl_1[i]
i = i + 1
else
to_add = tbl_2[j]
j = j + 1
end
if res[#res] ~= to_add then table.insert(res, to_add) end
end
while i <= n_1 do
to_add = tbl_1[i]
if res[#res] ~= to_add then table.insert(res, to_add) end
i = i + 1
end
while j <= n_2 do
to_add = tbl_2[j]
if res[#res] ~= to_add then table.insert(res, to_add) end
j = j + 1
end
return res
end
return MiniJump2d