Signed-off-by: Jean Privat <jean@pryen.org>
#
# assert "randomMethodId".to_snake_case == "random_method_id"
#
#
# assert "randomMethodId".to_snake_case == "random_method_id"
#
- # If `self` is upper, it is returned unchanged
+ # The rules are the following:
- # assert "RANDOM_METHOD_ID".to_snake_case == "RANDOM_METHOD_ID"
+ # An uppercase is always converted to a lowercase
- # If the identifier is prefixed by an underscore, the underscore is ignored
+ # assert "HELLO_WORLD".to_snake_case == "hello_world"
+ #
+ # An uppercase that follows a lowercase is prefixed with an underscore
+ #
+ # assert "HelloTheWORLD".to_snake_case == "hello_the_world"
+ #
+ # An uppercase that follows an uppercase and is followed by a lowercase, is prefixed with an underscore
+ #
+ # assert "HelloTHEWorld".to_snake_case == "hello_the_world"
+ #
+ # All other characters are kept as is; `self` does not need to be a proper CamelCased string.
- # assert "_privateField".to_snake_case == "_private_field"
+ # assert "=-_H3ll0Th3W0rld_-=".to_snake_case == "=-_h3ll0th3w0rld_-="
fun to_snake_case: SELFTYPE
do
fun to_snake_case: SELFTYPE
do
- if self.is_upper then return self
+ if self.is_lower then return self
var new_str = new FlatBuffer.with_capacity(self.length)
var new_str = new FlatBuffer.with_capacity(self.length)
- var is_first_char = true
+ var prev_is_lower = false
+ var prev_is_upper = false
for i in [0..length[ do
var char = chars[i]
for i in [0..length[ do
var char = chars[i]
- if is_first_char then
- new_str.add(char.to_lower)
- is_first_char = false
+ if char.is_lower then
+ new_str.add(char)
+ prev_is_lower = true
+ prev_is_upper = false
else if char.is_upper then
else if char.is_upper then
+ if prev_is_lower then
+ new_str.add('_')
+ else if prev_is_upper and i+1 < length and chars[i+1].is_lower then
+ new_str.add('_')
+ end
new_str.add(char.to_lower)
new_str.add(char.to_lower)
+ prev_is_lower = false
+ prev_is_upper = true
+ prev_is_lower = false
+ prev_is_upper = false