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local api = vim.api
local state = require'nvim-treesitter.state'
local configs = require'nvim-treesitter.configs'
local ts_utils = require'nvim-treesitter.ts_utils'
local M = {}
local function update_selection(buf, node)
local start_row, start_col, end_row, end_col = node:range()
if end_row == vim.fn.line('$') then
end_col = #vim.fn.getline('$')
end
vim.fn.setpos(".", { buf, start_row+1, start_col+1, 0 })
vim.fn.nvim_exec("normal v", false)
vim.fn.setpos(".", { buf, end_row+1, end_col+1, 0 })
end
local function select_incremental(get_parent)
return function()
local buf = api.nvim_get_current_buf()
local buf_state = state.get_buf_state(buf)
local node
-- initialize incremental selection with current range
if #buf_state.selection.nodes == 0 then
local cur_range = buf_state.selection.range
if not cur_range then
local _, cursor_row, cursor_col, _ = unpack(vim.fn.getpos("."))
cur_range = { cursor_row, cursor_col, cursor_row, cursor_col + 1 }
end
local root = buf_state.parser.tree:root()
if not root then return end
node = root:named_descendant_for_range(cur_range[1]-1, cur_range[2]-1, cur_range[3]-1, cur_range[4]-1)
else
node = get_parent(buf_state.selection.nodes[#buf_state.selection.nodes])
end
if not node then return end
if node ~= buf_state.selection.nodes[#buf_state.selection.nodes] then
state.insert_selection_node(buf, node)
end
update_selection(buf, node)
end
end
M.node_incremental = select_incremental(function(node)
return node:parent() or node
end)
M.scope_incremental = select_incremental(function(node)
return ts_utils.containing_scope(node:parent() or node)
end)
function M.node_decremental()
local buf = api.nvim_get_current_buf()
local buf_state = state.get_buf_state(buf)
local nodes = buf_state.selection.nodes
if #nodes < 2 then return end
state.pop_selection_node(buf)
local node = nodes[#nodes]
update_selection(buf, node)
end
function M.attach(bufnr)
local buf = bufnr or api.nvim_get_current_buf()
local config = configs.get_module('incremental_selection')
for funcname, mapping in pairs(config.keymaps) do
if funcname == "init_selection" then
local cmd = ":lua require'nvim-treesitter.incremental_selection'.node_incremental()<CR>"
api.nvim_buf_set_keymap(buf, 'n', mapping, cmd, { silent = true })
else
local cmd = string.format(":lua require'nvim-treesitter.incremental_selection'.%s()<CR>", funcname)
api.nvim_buf_set_keymap(buf, 'v', mapping, cmd, { silent = true })
end
end
end
function M.detach(bufnr)
local buf = bufnr or api.nvim_get_current_buf()
local config = configs.get_module('incremental_selection')
for f, mapping in pairs(config.keymaps) do
if f == "init_selection" then
api.nvim_buf_del_keymap(buf, 'n', mapping)
else
api.nvim_buf_del_keymap(buf, 'v', mapping)
end
end
end
return M
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