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https://github.com/neovim/neovim.git
synced 2025-09-08 04:18:18 +00:00
48 lines
1.6 KiB
Lua
48 lines
1.6 KiB
Lua
local a = vim.api
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function parse_tree(tsstate, force)
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if tsstate.valid and not force then
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return tsstate.tree
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end
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tsstate.tree = tsstate.parser:parse_buf(tsstate.bufnr)
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tsstate.valid = true
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return tsstate.tree
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end
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local function change_cb(tsstate, ev, bufnr, tick, start_row, oldstopline, stop_row)
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local start_byte = a.nvim_buf_get_offset(bufnr,start_row)
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-- a bit messy, should we expose edited but not reparsed tree?
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-- are multiple edits safe in general?
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local root = tsstate.parser:tree():root()
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-- TODO: add proper lookup function!
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local inode = root:descendant_for_point_range(oldstopline+9000,0, oldstopline,0)
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if inode == nil then
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local stop_byte = a.nvim_buf_get_offset(bufnr,stop_row)
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tsstate.parser:edit(start_byte,stop_byte,stop_byte,start_row,0,stop_row,0,stop_row,0)
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else
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local fakeoldstoprow, fakeoldstopcol, fakebyteoldstop = inode:start()
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local fake_rows = fakeoldstoprow-oldstopline
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local fakestop = stop_row+fake_rows
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local fakebytestop = a.nvim_buf_get_offset(bufnr,fakestop)+fakeoldstopcol
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tsstate.parser:edit(start_byte,fakebyteoldstop,fakebytestop,start_row,0,fakeoldstoprow,fakeoldstopcol,fakestop,fakeoldstopcol)
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end
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tsstate.valid = false
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end
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function create_parser(bufnr)
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if bufnr == 0 then
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bufnr = a.nvim_get_current_buf()
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end
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local ft = a.nvim_buf_get_option(bufnr, "filetype")
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local tsstate = {}
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tsstate.bufnr = bufnr
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tsstate.parser = vim.ts_parser(ft.."_parser.so", ft)
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parse_tree(tsstate)
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local function cb(ev, ...)
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return change_cb(tsstate, ev, ...)
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end
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a.nvim_buf_attach(tsstate.bufnr, false, {on_lines=cb})
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return tsstate
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end
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