105 lines
2.4 KiB
Lua
105 lines
2.4 KiB
Lua
local M = {}
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---@param msg string
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---@param ... any
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local function dbg(msg, ...)
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local formatted = string.format(msg, ...)
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vim.notify('[fugitive-ts] ' .. formatted, vim.log.levels.DEBUG)
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end
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---@param bufnr integer
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---@param ns integer
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---@param hunk fugitive-ts.Hunk
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---@param max_lines integer
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---@param debug? boolean
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function M.highlight_hunk(bufnr, ns, hunk, max_lines, debug)
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local lang = hunk.lang
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if not lang then
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return
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end
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if #hunk.lines > max_lines then
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if debug then
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dbg(
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'skipping hunk %s:%d (%d lines > %d max)',
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hunk.filename,
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hunk.start_line,
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#hunk.lines,
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max_lines
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)
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end
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return
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end
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---@type string[]
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local code_lines = {}
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for _, line in ipairs(hunk.lines) do
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table.insert(code_lines, line:sub(2))
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end
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local code = table.concat(code_lines, '\n')
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if code == '' then
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return
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end
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local ok, parser_obj = pcall(vim.treesitter.get_string_parser, code, lang)
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if not ok or not parser_obj then
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if debug then
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dbg('failed to create parser for lang: %s', lang)
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end
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return
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end
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local trees = parser_obj:parse()
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if not trees or #trees == 0 then
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if debug then
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dbg('parse returned no trees for lang: %s', lang)
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end
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return
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end
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local query = vim.treesitter.query.get(lang, 'highlights')
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if not query then
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if debug then
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dbg('no highlights query for lang: %s', lang)
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end
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return
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end
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for i, line in ipairs(hunk.lines) do
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local buf_line = hunk.start_line + i - 1
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local line_len = #line
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if line_len > 1 then
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pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, buf_line, 1, {
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end_col = line_len,
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hl_group = 'Normal',
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priority = 199,
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})
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end
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end
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local extmark_count = 0
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for id, node, _ in query:iter_captures(trees[1]:root(), code) do
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local capture_name = '@' .. query.captures[id]
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local sr, sc, er, ec = node:range()
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local buf_sr = hunk.start_line + sr
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local buf_er = hunk.start_line + er
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local buf_sc = sc + 1
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local buf_ec = ec + 1
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pcall(vim.api.nvim_buf_set_extmark, bufnr, ns, buf_sr, buf_sc, {
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end_row = buf_er,
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end_col = buf_ec,
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hl_group = capture_name,
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priority = 200,
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})
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extmark_count = extmark_count + 1
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end
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if debug then
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dbg('hunk %s:%d applied %d extmarks', hunk.filename, hunk.start_line, extmark_count)
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end
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end
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return M
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