mirror of
https://github.com/neovim/neovim.git
synced 2024-12-20 19:25:11 -07:00
131 lines
3.7 KiB
Lua
131 lines
3.7 KiB
Lua
local api = vim.api
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local M = {}
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M.priorities = {
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syntax = 50,
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treesitter = 100,
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semantic_tokens = 125,
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diagnostics = 150,
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user = 200,
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}
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--- Highlight range between two positions
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---
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---@param bufnr integer Buffer number to apply highlighting to
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---@param ns integer Namespace to add highlight to
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---@param higroup string Highlight group to use for highlighting
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---@param start { [1]: integer, [2]: integer } Start position {line, col}
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---@param finish { [1]: integer, [2]: integer } Finish position {line, col}
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---@param opts table|nil Optional parameters
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-- - regtype type of range (see |setreg()|, default charwise)
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-- - inclusive boolean indicating whether the range is end-inclusive (default false)
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-- - priority number indicating priority of highlight (default priorities.user)
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function M.range(bufnr, ns, higroup, start, finish, opts)
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opts = opts or {}
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local regtype = opts.regtype or 'v'
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local inclusive = opts.inclusive or false
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local priority = opts.priority or M.priorities.user
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-- sanity check
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if start[2] < 0 or finish[1] < start[1] then
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return
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end
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local region = vim.region(bufnr, start, finish, regtype, inclusive)
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for linenr, cols in pairs(region) do
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local end_row
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if cols[2] == -1 then
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end_row = linenr + 1
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cols[2] = 0
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end
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api.nvim_buf_set_extmark(bufnr, ns, linenr, cols[1], {
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hl_group = higroup,
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end_row = end_row,
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end_col = cols[2],
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priority = priority,
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strict = false,
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})
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end
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end
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local yank_ns = api.nvim_create_namespace('hlyank')
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local yank_timer
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--- Highlight the yanked region
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---
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--- use from init.vim via
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--- au TextYankPost * lua vim.highlight.on_yank()
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--- customize highlight group and timeout via
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--- au TextYankPost * lua vim.highlight.on_yank {higroup="IncSearch", timeout=150}
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--- customize conditions (here: do not highlight a visual selection) via
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--- au TextYankPost * lua vim.highlight.on_yank {on_visual=false}
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---
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-- @param opts table|nil Optional parameters
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-- - higroup highlight group for yanked region (default "IncSearch")
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-- - timeout time in ms before highlight is cleared (default 150)
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-- - on_macro highlight when executing macro (default false)
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-- - on_visual highlight when yanking visual selection (default true)
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-- - event event structure (default vim.v.event)
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function M.on_yank(opts)
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vim.validate({
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opts = {
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opts,
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function(t)
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if t == nil then
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return true
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else
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return type(t) == 'table'
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end
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end,
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'a table or nil to configure options (see `:h highlight.on_yank`)',
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},
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})
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opts = opts or {}
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local event = opts.event or vim.v.event
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local on_macro = opts.on_macro or false
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local on_visual = (opts.on_visual ~= false)
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if not on_macro and vim.fn.reg_executing() ~= '' then
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return
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end
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if event.operator ~= 'y' or event.regtype == '' then
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return
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end
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if not on_visual and event.visual then
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return
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end
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local higroup = opts.higroup or 'IncSearch'
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local timeout = opts.timeout or 150
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local bufnr = api.nvim_get_current_buf()
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api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1)
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if yank_timer then
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yank_timer:close()
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end
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local pos1 = vim.fn.getpos("'[")
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local pos2 = vim.fn.getpos("']")
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pos1 = { pos1[2] - 1, pos1[3] - 1 + pos1[4] }
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pos2 = { pos2[2] - 1, pos2[3] - 1 + pos2[4] }
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M.range(
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bufnr,
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yank_ns,
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higroup,
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pos1,
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pos2,
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{ regtype = event.regtype, inclusive = event.inclusive, priority = M.priorities.user }
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)
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yank_timer = vim.defer_fn(function()
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yank_timer = nil
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if api.nvim_buf_is_valid(bufnr) then
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api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1)
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end
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end, timeout)
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end
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return M
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