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tree-sitter: split tree-sitter lua interface from demo code
This commit is contained in:
Björn Linse
57
runtime/lua/tree_sitter_demo.lua
Normal file
57
runtime/lua/tree_sitter_demo.lua
Normal file
@@ -0,0 +1,57 @@
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local a = vim.api
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_G.a = vim.api
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if __treesitter_rt_ns == nil then
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__treesitter_rt_ns = a.nvim_create_namespace("treesitter_demp")
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end
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local my_ns = __treesitter_rt_ns
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function ts_inspect_pos(row,col)
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local tree = parse_tree(theparser)
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local root = tree:root()
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local node = root:descendant_for_point_range(row,col,row,col)
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show_node(node)
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end
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function show_node(node)
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if node == nil then
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return
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end
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a.nvim_buf_clear_highlight(0, my_ns, 0, -1)
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shown_node = node
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print(node:type())
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local start_row, start_col, end_row, end_col = node:range()
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a.nvim_buf_add_highlight(0, my_ns, "ErrorMsg", start_row, start_col, start_col+1)
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if end_col >= 1 then
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end_col = end_col - 1
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end
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a.nvim_buf_add_highlight(0, my_ns, "ErrorMsg", end_row, end_col, end_col+1)
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end
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function ts_expand_node()
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if shown_node == nil then
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return
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end
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parent = shown_node:parent()
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show_node(parent)
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end
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function ts_cursor()
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local row, col = unpack(a.nvim_win_get_cursor(0))
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ts_inspect_pos(row-1, col)
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end
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if false then
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ctree = theparser.tree
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root = ctree:root()
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cursor = root:to_cursor()
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node = cursor:forward(5000) if true then return node end
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print(#root)
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c = root:child(50)
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print(require'inspect'{c:extent()})
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type(ctree.__tostring)
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root:__tostring()
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print(_tslua_debug())
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end
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@@ -1,115 +0,0 @@
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local a = vim.api
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if __treesitter_rt_ns == nil then
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__treesitter_rt_ns = a.nvim_buf_add_highlight(0, 0, "", 0, 0, 0)
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__treesitter_rt_syn_ns = a.nvim_buf_add_highlight(0, 0, "", 0, 0, 0)
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end
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local my_ns = __treesitter_rt_ns
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local my_syn_ns = __treesitter_rt_syn_ns
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--luadev = require'luadev'
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--i = require'inspect'
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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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function the_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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local edit
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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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--luadev.append_buf({i{edit.start_byte,edit.old_end_byte,edit.new_end_byte},
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-- i{edit.start_point, edit.old_end_point, edit.new_end_point}})
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end
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function attach_buf(tsstate)
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local function cb(ev, ...)
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return the_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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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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attach_buf(tsstate)
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return tsstate
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end
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function ts_inspect_pos(row,col)
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local tree = parse_tree(theparser)
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local root = tree:root()
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local node = root:descendant_for_point_range(row,col,row,col)
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show_node(node)
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end
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function show_node(node)
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if node == nil then
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return
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end
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a.nvim_buf_clear_highlight(0, my_ns, 0, -1)
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shown_node = node
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print(node:type())
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local start_row, start_col, end_row, end_col = node:range()
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a.nvim_buf_add_highlight(0, my_ns, "ErrorMsg", start_row, start_col, start_col+1)
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if end_col >= 1 then
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end_col = end_col - 1
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end
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a.nvim_buf_add_highlight(0, my_ns, "ErrorMsg", end_row, end_col, end_col+1)
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end
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function ts_expand_node()
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if shown_node == nil then
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return
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end
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parent = shown_node:parent()
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show_node(parent)
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end
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function ts_cursor()
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local row, col = unpack(a.nvim_win_get_cursor(0))
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ts_inspect_pos(row-1, col)
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end
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if false then
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ctree = theparser.tree
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root = ctree:root()
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cursor = root:to_cursor()
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node = cursor:forward(5000) if true then return node end
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print(#root)
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c = root:child(50)
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print(require'inspect'{c:extent()})
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type(ctree.__tostring)
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root:__tostring()
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print(_tslua_debug())
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end
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47
runtime/lua/vim/tree_sitter.lua
Normal file
47
runtime/lua/vim/tree_sitter.lua
Normal file
@@ -0,0 +1,47 @@
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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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@@ -6,7 +6,8 @@ func! TSTest()
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return
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end
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" TODO: module!
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lua require'treesitter_rt'
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lua require'vim.tree_sitter'
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lua require'tree_sitter_demo'
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lua theparser = create_parser(vim.api.nvim_get_current_buf())
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let g:has_ts = v:true
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endfunc
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