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-- 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)

-- TODO: Remove after support for Neovim<0.6 is dropped

if vim.fn.has('nvim-0.6') == 0 then

vim.notify(

'(mini.jump2d) Official support for Neovim<0.6 will soon be dropped. Update to a newer version of Neovim.'

)

end

-- 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 BufWinEnter quickfix 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

--- Stop jumping

MiniJump2d.stop = function()

H.spots_unshow()

H.cache.spots = nil

vim.cmd('redraw')

if H.cache.is_in_getchar 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]+[%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 8BD0 = 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

-- 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

spot = vim.str_byteindex(line, vim.str_utfindex(line, spot))

-- Add spot only if it referces new actually visible column

if spot ~= res[#res] then table.insert(res, spot) end

end

return res

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 "getchar" mode

is_in_getchar = 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

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

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

--- 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]

(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

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.message = function(msg) vim.cmd('echomsg ' .. vim.inspect('(mini.jump2d) ' .. msg)) 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 needs_help_msg then H.message(msg) end

end, 1000) end

-- Use `getchar()` because `getcharstr()` is present only in Neovim>=0.6

-- Might want to remove if support for Neovim<0.6 is dropped

H.cache.is_in_getchar = true

local ok, char = pcall(vim.fn.getchar)

H.cache.is_in_getchar = false

needs_help_msg = false

if not ok then return end

if type(char) == 'number' then char = vim.fn.nr2char(char) end

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

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