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https://github.com/godotengine/godot
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103 lines
2.5 KiB
C++
103 lines
2.5 KiB
C++
#ifndef VARIANT_PARSER_H
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#define VARIANT_PARSER_H
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#include "variant.h"
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#include "os/file_access.h"
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#include "resource.h"
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class VariantParser {
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public:
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struct Stream {
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virtual CharType get_char()=0;
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virtual bool is_utf8() const=0;
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virtual bool is_eof() const=0;
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CharType saved;
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Stream() { saved=0; }
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virtual ~Stream() {}
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};
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struct StreamFile : public Stream {
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FileAccess *f;
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virtual CharType get_char();
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virtual bool is_utf8() const;
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virtual bool is_eof() const;
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StreamFile() { f=NULL; }
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};
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typedef Error (*ParseResourceFunc)(void* p_self, Stream* p_stream,Ref<Resource>& r_res,int &line,String &r_err_str);
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struct ResourceParser {
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void *userdata;
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ParseResourceFunc func;
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ParseResourceFunc ext_func;
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ParseResourceFunc sub_func;
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};
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enum TokenType {
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TK_CURLY_BRACKET_OPEN,
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TK_CURLY_BRACKET_CLOSE,
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TK_BRACKET_OPEN,
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TK_BRACKET_CLOSE,
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TK_PARENTHESIS_OPEN,
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TK_PARENTHESIS_CLOSE,
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TK_IDENTIFIER,
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TK_STRING,
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TK_NUMBER,
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TK_COLON,
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TK_COMMA,
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TK_EQUAL,
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TK_EOF,
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TK_ERROR,
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TK_MAX
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};
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enum Expecting {
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EXPECT_OBJECT,
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EXPECT_OBJECT_KEY,
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EXPECT_COLON,
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EXPECT_OBJECT_VALUE,
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};
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struct Token {
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TokenType type;
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Variant value;
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};
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struct Tag {
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String name;
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Map<String,Variant> fields;
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};
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private:
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static const char * tk_name[TK_MAX];
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template<class T>
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static Error _parse_construct(Stream *p_stream, Vector<T>& r_construct, int &line, String &r_err_str);
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static Error _parse_dictionary(Dictionary &object, Stream *p_stream, int &line, String &r_err_str,ResourceParser *p_res_parser=NULL);
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static Error _parse_array(Array &array, Stream *p_stream, int &line, String &r_err_str,ResourceParser *p_res_parser=NULL);
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static Error _parse_tag(Token& token,Stream *p_stream, int &line, String &r_err_str,Tag& r_tag,ResourceParser *p_res_parser=NULL);
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public:
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static Error parse_tag(Stream *p_stream, int &line, String &r_err_str,Tag& r_tag,ResourceParser *p_res_parser=NULL);
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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);
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static Error parse_value(Token& token,Variant &value, Stream *p_stream, int &line, String &r_err_str,ResourceParser *p_res_parser=NULL);
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static Error get_token(Stream *p_stream,Token& r_token,int &line,String &r_err_str);
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static Error parse(Stream *p_stream, Variant &r_ret, String &r_err_str, int &r_err_line,ResourceParser *p_res_parser=NULL);
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};
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#endif // VARIANT_PARSER_H
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