// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - private static IExpression ParseMultExpression() { if (Check(FirstExpExp)) { IExpression exp = ParseExpExpression(); while (Check(new TokenSet(TokenType.Multiply | TokenType.Divide))) { TokenType opType = CurrentToken.type; Eat(opType); if (!Check(FirstExpExp)) { throw new InvalidSyntaxException("Expected an expression after * or / operator"); } IExpression right = ParseExpExpression(); switch (opType) { case TokenType.Multiply: exp = new MultExpression(exp, right); break; case TokenType.Divide: exp = new DivExpression(exp, right); break; default: throw new UnexpectedBehaviorException("Expected mult or divide, got: " + opType); } } return(exp); } else { throw new InvalidSyntaxException("Invalid expression"); } }
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - private static IExpression ParseMultExpression() { if ( Check( FirstExpExp ) ) { IExpression exp = ParseExpExpression(); while ( Check( new TokenSet( TokenType.Multiply | TokenType.Divide ) ) ) { TokenType opType = CurrentToken.type; Eat( opType ); if ( !Check( FirstExpExp ) ) { throw new InvalidSyntaxException( "Expected an expression after * or / operator" ); } IExpression right = ParseExpExpression(); switch ( opType ) { case TokenType.Multiply: exp = new MultExpression( exp, right ); break; case TokenType.Divide: exp = new DivExpression( exp, right ); break; default: throw new UnexpectedBehaviorException( "Expected mult or divide, got: " + opType ); } } return exp; } else { throw new InvalidSyntaxException( "Invalid expression" ); } }