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local M = {}
local function is_word_char(ch)
if ch == "" then
return false
end
local byte = string.byte(ch)
if not byte then
return false
end
if byte >= string.byte("a") and byte <= string.byte("z") then
return true
end
if byte >= string.byte("A") and byte <= string.byte("Z") then
return true
end
if byte >= string.byte("0") and byte <= string.byte("9") then
return true
end
return ch == "_"
end
function M.forward_word()
local len = editor.buffer_length()
local point = editor.point()
if point >= len then
return
end
local ch = editor.char_at(point)
if is_word_char(ch) then
while point < len and is_word_char(editor.char_at(point)) do
point = point + 1
end
else
while point < len and not is_word_char(editor.char_at(point)) do
point = point + 1
end
while point < len and is_word_char(editor.char_at(point)) do
point = point + 1
end
end
editor.set_point(point)
end
function M.backward_word()
local point = editor.point()
if point <= 0 then
return
end
point = point - 1
while point >= 0 and not is_word_char(editor.char_at(point)) do
point = point - 1
end
while point >= 0 and is_word_char(editor.char_at(point)) do
point = point - 1
end
editor.set_point(point + 1)
end
return M
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