示例#1
0
文件: Parser.cs 项目: VerZsuT/VerteX
        /// <summary>
        /// Парсит конструкцию SWITCH.
        /// </summary>
        private static void ParseSwitch(TokenList body)
        {
            BaseGenerator generator = CodeManager.GetGenerator(parseMode);

            for (int index = 0; index < body.Count; index++)
            {
                TokenList nextTokens   = body.GetRange(index);
                Token     currentToken = body[index];
                Token     nextToken    = body.Get(index + 1);

                if (currentToken.TypeIs(TokenType.NextLine))
                {
                    lineIndex++;
                    continue;
                }

                // случай <expression>:
                if (currentToken.TypeIs(KeywordType.Case) && body[index + 2].TypeIs(TokenType.Colon))
                {
                    TokenList caseBody = GetCaseBody(nextTokens, out index, index);
                    generator.AddCaseConstruction(nextToken);
                    Parse(caseBody, out _);
                }
                // по_умолчанию:
                else if (currentToken.TypeIs(KeywordType.Default) && body[index + 1].TypeIs(TokenType.Colon))
                {
                    TokenList defaultBody = GetCaseBody(nextTokens, out index, index);
                    generator.AddDefaultCaseConstruction();
                    Parse(defaultBody, out _);
                }
                // завершить;
                else if (currentToken.TypeIs(KeywordType.Break))
                {
                    generator.AddBreak();
                }
            }
        }