# Utility class that provides utility to quickly create regex objects and

# replace text with multiple regular expressions.

class_name RegExpGroup

extends Reference

static func compile(pattern: String) -> RegEx:

var regex := RegEx.new()

regex.compile(pattern)

return regex

static func collection(patterns: Dictionary) -> RegExCollection:

return RegExCollection.new(patterns)

class RegExCollection:

var _regexes := {}

var _current_index := 0

var _current_array := []

func _init(regexes: Dictionary) -> void:

for pattern in regexes:

var replacement: String = regexes[pattern]

var regex := RegEx.new()

regex.compile(pattern)

_regexes[regex] = replacement

_current_array = _regexes.keys()

func replace(text: String) -> String:

for regex in _regexes:

var replacement: String = _regexes[regex]

text = regex.sub(text, replacement, true)

return text

func _iterator_is_valid() -> bool:

return _current_index < _current_array.size()

func _iter_init(_arg) -> bool:

_current_index = 0

_current_array = _regexes.keys()

return _iterator_is_valid()

func _iter_next(_arg) -> bool:

_current_index += 1

return _iterator_is_valid()

func _iter_get(_arg):

return current()

func size() -> int:

return _regexes.size()

func keys() -> Array:

return _regexes.keys()

func values() -> Array:

return _regexes.values()

func current() -> RegEx:

return _current_array[_current_index]

func currentReplacement() -> String:

return _regexes[current()]