Inheritance: BinaryExpression
Esempio n. 1
0
        public void RaiseIfRemainderRealByInteger()
        {
            RemExpression expr = new RemExpression(new ConstantExpression(6.5), new ConstantExpression(2));

            try
            {
                expr.Evaluate(null);
                Assert.Fail();
            }
            catch (Exception ex)
            {
                Assert.IsInstanceOfType(ex, typeof(InvalidCastException));
            }
        }
Esempio n. 2
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        public void RemainderOfTwoIntegers()
        {
            RemExpression expr = new RemExpression(new ConstantExpression(6), new ConstantExpression(2));

            Assert.AreEqual(0, expr.Evaluate(null));
        }
Esempio n. 3
0
        private IExpression ParseBinaryExpression(int level)
        {
            if (level >= binaryoperators.Length)
                return this.ParseTerm();

            IExpression expr = this.ParseBinaryExpression(level + 1);

            if (expr == null)
                return null;

            Token token;

            for (token = this.lexer.NextToken(); token != null && this.IsBinaryOperator(level, token); token = this.lexer.NextToken())
            {
                if (token.Value == "=:=")
                    expr = new StrictEqualExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "==")
                    expr = new EqualExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "+")
                    expr = new AddExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "-")
                    expr = new SubtractExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "*")
                    expr = new MultiplyExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "/")
                    expr = new DivideExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "div")
                    expr = new DivExpression(expr, this.ParseBinaryExpression(level + 1));
                else if (token.Value == "rem")
                    expr = new RemExpression(expr, this.ParseBinaryExpression(level + 1));
            }

            if (token != null)
                this.lexer.PushToken(token);

            return expr;
        }