neovim/runtime/lua/tree_sitter_demo.lua
2019-09-28 14:55:43 +02:00

58 lines
1.3 KiB
Lua

local a = vim.api
_G.a = vim.api
if __treesitter_rt_ns == nil then
__treesitter_rt_ns = a.nvim_create_namespace("treesitter_demp")
end
local my_ns = __treesitter_rt_ns
function ts_inspect_pos(row,col)
local tree = theparser:parse_tree()
local root = tree:root()
local node = root:descendant_for_point_range(row,col,row,col)
show_node(node)
end
function show_node(node)
if node == nil then
return
end
a.nvim_buf_clear_highlight(0, my_ns, 0, -1)
shown_node = node
print(node:type())
local start_row, start_col, end_row, end_col = node:range()
a.nvim_buf_add_highlight(0, my_ns, "ErrorMsg", start_row, start_col, start_col+1)
if end_col >= 1 then
end_col = end_col - 1
end
a.nvim_buf_add_highlight(0, my_ns, "ErrorMsg", end_row, end_col, end_col+1)
end
function ts_expand_node()
if shown_node == nil then
return
end
parent = shown_node:parent()
show_node(parent)
end
function ts_cursor()
local row, col = unpack(a.nvim_win_get_cursor(0))
ts_inspect_pos(row-1, col)
end
if false then
ctree = theparser.tree
root = ctree:root()
cursor = root:to_cursor()
node = cursor:forward(5000) if true then return node end
print(#root)
c = root:child(50)
print(require'inspect'{c:extent()})
type(ctree.__tostring)
root:__tostring()
print(_tslua_debug())
end