File: script_class_parser.h

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/**************************************************************************/
/*  script_class_parser.h                                                 */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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 SCRIPT_CLASS_PARSER_H
#define SCRIPT_CLASS_PARSER_H

#include "core/ustring.h"
#include "core/variant.h"
#include "core/vector.h"

class ScriptClassParser {
public:
	struct NameDecl {
		enum Type {
			NAMESPACE_DECL,
			CLASS_DECL,
			STRUCT_DECL
		};

		String name;
		Type type;
	};

	struct ClassDecl {
		String name;
		String namespace_;
		Vector<String> base;
		bool nested;
		bool has_script_attr;
	};

private:
	String code;
	int idx;
	int line;
	String error_str;
	bool error;
	Variant value;

	Vector<ClassDecl> classes;

	enum Token {
		TK_BRACKET_OPEN,
		TK_BRACKET_CLOSE,
		TK_CURLY_BRACKET_OPEN,
		TK_CURLY_BRACKET_CLOSE,
		TK_PERIOD,
		TK_COLON,
		TK_COMMA,
		TK_SYMBOL,
		TK_IDENTIFIER,
		TK_STRING,
		TK_NUMBER,
		TK_OP_LESS,
		TK_OP_GREATER,
		TK_EOF,
		TK_ERROR,
		TK_MAX
	};

	static const char *token_names[TK_MAX];
	static String get_token_name(Token p_token);

	Token get_token();

	Error _skip_generic_type_params();

	Error _parse_type_full_name(String &r_full_name);
	Error _parse_class_base(Vector<String> &r_base);
	Error _parse_type_constraints();
	Error _parse_namespace_name(String &r_name, int &r_curly_stack);

public:
	Error parse(const String &p_code);
	Error parse_file(const String &p_filepath);

	String get_error();

	Vector<ClassDecl> get_classes();
};

#endif // SCRIPT_CLASS_PARSER_H