/*************************************************************************/
/*  regex.h                                                              */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#ifndef REGEX_H
#define REGEX_H

#include "core/array.h"
#include "core/dictionary.h"
#include "core/map.h"
#include "core/reference.h"
#include "core/ustring.h"
#include "core/vector.h"

class RegExMatch : public Reference {

	GDCLASS(RegExMatch, Reference);

	struct Range {
		int start;
		int end;
	};

	String subject;
	Vector<Range> data;
	Map<String, int> names;

	friend class RegEx;

protected:
	static void _bind_methods();

	int _find(const Variant &p_name) const;

public:
	String get_subject() const;
	int get_group_count() const;
	Dictionary get_names() const;

	Array get_strings() const;
	String get_string(const Variant &p_name) const;
	int get_start(const Variant &p_name) const;
	int get_end(const Variant &p_name) const;
};

class RegEx : public Reference {

	GDCLASS(RegEx, Reference);

	void *general_ctx;
	void *code;
	String pattern;

	void _pattern_info(uint32_t what, void *where) const;

protected:
	static void _bind_methods();

public:
	void clear();
	Error compile(const String &p_pattern);
	void _init(const String &p_pattern = "");

	Ref<RegExMatch> search(const String &p_subject, int p_offset = 0, int p_end = -1) const;
	Array search_all(const String &p_subject, int p_offset = 0, int p_end = -1) const;
	String sub(const String &p_subject, const String &p_replacement, bool p_all = false, int p_offset = 0, int p_end = -1) const;

	bool is_valid() const;
	String get_pattern() const;
	int get_group_count() const;
	Array get_names() const;

	RegEx();
	RegEx(const String &p_pattern);
	~RegEx();
};

#endif // REGEX_H
