/*************************************************************************/ /* variant_parser.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2019 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 VARIANT_PARSER_H #define VARIANT_PARSER_H #include "core/os/file_access.h" #include "core/resource.h" #include "core/variant.h" class VariantParser { public: struct Stream { virtual CharType get_char() = 0; virtual bool is_utf8() const = 0; virtual bool is_eof() const = 0; CharType saved; Stream() : saved(0) {} virtual ~Stream() {} }; struct StreamFile : public Stream { FileAccess *f; virtual CharType get_char(); virtual bool is_utf8() const; virtual bool is_eof() const; StreamFile() { f = NULL; } }; struct StreamString : public Stream { String s; int pos; virtual CharType get_char(); virtual bool is_utf8() const; virtual bool is_eof() const; StreamString() { pos = 0; } }; typedef Error (*ParseResourceFunc)(void *p_self, Stream *p_stream, Ref<Resource> &r_res, int &line, String &r_err_str); struct ResourceParser { void *userdata; ParseResourceFunc func; ParseResourceFunc ext_func; ParseResourceFunc sub_func; }; enum TokenType { TK_CURLY_BRACKET_OPEN, TK_CURLY_BRACKET_CLOSE, TK_BRACKET_OPEN, TK_BRACKET_CLOSE, TK_PARENTHESIS_OPEN, TK_PARENTHESIS_CLOSE, TK_IDENTIFIER, TK_STRING, TK_NUMBER, TK_COLOR, TK_COLON, TK_COMMA, TK_PERIOD, TK_EQUAL, TK_EOF, TK_ERROR, TK_MAX }; enum Expecting { EXPECT_OBJECT, EXPECT_OBJECT_KEY, EXPECT_COLON, EXPECT_OBJECT_VALUE, }; struct Token { TokenType type; Variant value; }; struct Tag { String name; Map<String, Variant> fields; }; private: static const char *tk_name[TK_MAX]; template <class T> static Error _parse_construct(Stream *p_stream, Vector<T> &r_construct, int &line, String &r_err_str); static Error _parse_enginecfg(Stream *p_stream, Vector<String> &strings, int &line, String &r_err_str); static Error _parse_dictionary(Dictionary &object, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser = NULL); static Error _parse_array(Array &array, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser = NULL); static Error _parse_tag(Token &token, Stream *p_stream, int &line, String &r_err_str, Tag &r_tag, ResourceParser *p_res_parser = NULL, bool p_simple_tag = false); public: static Error parse_tag(Stream *p_stream, int &line, String &r_err_str, Tag &r_tag, ResourceParser *p_res_parser = NULL, bool p_simple_tag = false); static Error parse_tag_assign_eof(Stream *p_stream, int &line, String &r_err_str, Tag &r_tag, String &r_assign, Variant &r_value, ResourceParser *p_res_parser = NULL, bool p_simple_tag = false); static Error parse_value(Token &token, Variant &value, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser = NULL); static Error get_token(Stream *p_stream, Token &r_token, int &line, String &r_err_str); static Error parse(Stream *p_stream, Variant &r_ret, String &r_err_str, int &r_err_line, ResourceParser *p_res_parser = NULL); }; class VariantWriter { public: typedef Error (*StoreStringFunc)(void *ud, const String &p_string); typedef String (*EncodeResourceFunc)(void *ud, const RES &p_resource); static Error write(const Variant &p_variant, StoreStringFunc p_store_string_func, void *p_store_string_ud, EncodeResourceFunc p_encode_res_func, void *p_encode_res_ud); static Error write_to_string(const Variant &p_variant, String &r_string, EncodeResourceFunc p_encode_res_func = NULL, void *p_encode_res_ud = NULL); }; #endif // VARIANT_PARSER_H