Ejemplo n.º 1
1
        IValue Parse(string aExpression)
        {
            aExpression = aExpression.Trim();
            int index = aExpression.IndexOf('(');
            while (index >= 0)
            {
                SubstitudeBracket(ref aExpression, index);
                index = aExpression.IndexOf('(');
            }
            if (aExpression.Contains(','))
            {
                string[] parts = aExpression.Split(',');
                List<IValue> exp = new List<IValue>(parts.Length);
                for (int i = 0; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                        exp.Add(Parse(s));
                }
                return new MultiParameterList(exp.ToArray());
            }
            else if (aExpression.Contains('+'))
            {
                string[] parts = aExpression.Split('+');
                List<IValue> exp = new List<IValue>(parts.Length);
                for (int i = 0; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                        exp.Add(Parse(s));
                }
                if (exp.Count == 1)
                    return exp[0];
                return new OperationSum(exp.ToArray());
            }
            else if (aExpression.Contains('-'))
            {
                string[] parts = aExpression.Split('-');
                List<IValue> exp = new List<IValue>(parts.Length);
                if (!string.IsNullOrEmpty(parts[0].Trim()))
                    exp.Add(Parse(parts[0]));
                for (int i = 1; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                        exp.Add(new OperationNegate(Parse(s)));
                }
                if (exp.Count == 1)
                    return exp[0];
                return new OperationSum(exp.ToArray());
            }
            else if (aExpression.Contains('*'))
            {
                string[] parts = aExpression.Split('*');
                List<IValue> exp = new List<IValue>(parts.Length);
                for (int i = 0; i < parts.Length; i++)
                {
                    exp.Add(Parse(parts[i]));
                }
                if (exp.Count == 1)
                    return exp[0];
                return new OperationProduct(exp.ToArray());
            }
            else if (aExpression.Contains('/'))
            {
                string[] parts = aExpression.Split('/');
                List<IValue> exp = new List<IValue>(parts.Length);
                if (!string.IsNullOrEmpty(parts[0].Trim()))
                    exp.Add(Parse(parts[0]));
                for (int i = 1; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                        exp.Add(new OperationReciprocal(Parse(s)));
                }
                return new OperationProduct(exp.ToArray());
            }
            else if (aExpression.Contains('^'))
            {
                int pos = aExpression.IndexOf('^');
                var val = Parse(aExpression.Substring(0, pos));
                var pow = Parse(aExpression.Substring(pos + 1));
                return new OperationPower(val, pow);
            }
            foreach (var M in m_Funcs)
            {
                if (aExpression.StartsWith(M.Key))
                {
                    var inner = aExpression.Substring(M.Key.Length);
                    var param = Parse(inner);
                    var multiParams = param as MultiParameterList;
                    IValue[] parameters;
                    if (multiParams != null)
                        parameters = multiParams.Parameters;
                    else
                    parameters = new IValue[] { param };
                    return new CustomFunction(M.Key, M.Value, parameters);
                }
            }
            foreach (var C in m_Consts)
            {
                if (aExpression.StartsWith(C.Key))
                {
                    return new CustomFunction(C.Key,(p)=>C.Value(),null);
                }
            }
            int index2a = aExpression.IndexOf('&');
            int index2b = aExpression.IndexOf(';');
            if (index2a >= 0 && index2b >= 2)
            {
                var inner = aExpression.Substring(index2a + 1, index2b - index2a - 1);
                int bracketIndex;
                if (int.TryParse(inner, out bracketIndex) && bracketIndex >= 0 && bracketIndex < m_BracketHeap.Count)
                {
                    return Parse(m_BracketHeap[bracketIndex]);
                }
                else
                    throw new ParseException("Can't parse substitude token");
            }
            double doubleValue;
            if (double.TryParse(aExpression, out doubleValue))
            {
                return new Number(doubleValue);
            }
            if (ValidIdentifier(aExpression))
            {
                if (m_Context.Parameters.ContainsKey(aExpression))
                    return m_Context.Parameters[aExpression];
                var val = new Parameter(aExpression);
                m_Context.Parameters.Add(aExpression, val);
                return val;
            }

            throw new ParseException("Reached unexpected end within the parsing tree");
        }
Ejemplo n.º 2
0
 double[] InvokeMultiResult(double[] aParams, Parameter[] aParamList)
 {
     int count = System.Math.Min(aParamList.Length, aParams.Length);
     for (int i = 0; i < count; i++)
     {
         if (aParamList[i] != null)
             aParamList[i].Value = aParams[i];
     }
     return MultiValue;
 }
Ejemplo n.º 3
0
        IValue Parse(string aExpression)
        {
            aExpression = aExpression.Trim();
            int index = aExpression.IndexOf('(');

            while (index >= 0)
            {
                SubstitudeBracket(ref aExpression, index);
                index = aExpression.IndexOf('(');
            }
            if (aExpression.Contains(','))
            {
                string[]      parts = aExpression.Split(',');
                List <IValue> exp   = new List <IValue>(parts.Length);
                for (int i = 0; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                    {
                        exp.Add(Parse(s));
                    }
                }
                return(new MultiParameterList(exp.ToArray()));
            }
            else if (aExpression.Contains('+'))
            {
                string[]      parts = aExpression.Split('+');
                List <IValue> exp   = new List <IValue>(parts.Length);
                for (int i = 0; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                    {
                        exp.Add(Parse(s));
                    }
                }
                if (exp.Count == 1)
                {
                    return(exp[0]);
                }
                return(new OperationSum(exp.ToArray()));
            }
            else if (aExpression.Contains('-'))
            {
                string[]      parts = aExpression.Split('-');
                List <IValue> exp   = new List <IValue>(parts.Length);
                if (!string.IsNullOrEmpty(parts[0].Trim()))
                {
                    exp.Add(Parse(parts[0]));
                }
                for (int i = 1; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                    {
                        exp.Add(new OperationNegate(Parse(s)));
                    }
                }
                if (exp.Count == 1)
                {
                    return(exp[0]);
                }
                return(new OperationSum(exp.ToArray()));
            }
            else if (aExpression.Contains('*'))
            {
                string[]      parts = aExpression.Split('*');
                List <IValue> exp   = new List <IValue>(parts.Length);
                for (int i = 0; i < parts.Length; i++)
                {
                    exp.Add(Parse(parts[i]));
                }
                if (exp.Count == 1)
                {
                    return(exp[0]);
                }
                return(new OperationProduct(exp.ToArray()));
            }
            else if (aExpression.Contains('/'))
            {
                string[]      parts = aExpression.Split('/');
                List <IValue> exp   = new List <IValue>(parts.Length);
                if (!string.IsNullOrEmpty(parts[0].Trim()))
                {
                    exp.Add(Parse(parts[0]));
                }
                for (int i = 1; i < parts.Length; i++)
                {
                    string s = parts[i].Trim();
                    if (!string.IsNullOrEmpty(s))
                    {
                        exp.Add(new OperationReciprocal(Parse(s)));
                    }
                }
                return(new OperationProduct(exp.ToArray()));
            }
            else if (aExpression.Contains('^'))
            {
                int pos = aExpression.IndexOf('^');
                var val = Parse(aExpression.Substring(0, pos));
                var pow = Parse(aExpression.Substring(pos + 1));
                return(new OperationPower(val, pow));
            }
            int pPos = aExpression.IndexOf("&");

            if (pPos > 0)
            {
                string fName = aExpression.Substring(0, pPos);
                foreach (var M in m_Funcs)
                {
                    if (fName == M.Key)
                    {
                        var      inner       = aExpression.Substring(M.Key.Length);
                        var      param       = Parse(inner);
                        var      multiParams = param as MultiParameterList;
                        IValue[] parameters;
                        if (multiParams != null)
                        {
                            parameters = multiParams.Parameters;
                        }
                        else
                        {
                            parameters = new IValue[] { param }
                        };
                        return(new CustomFunction(M.Key, M.Value, parameters));
                    }
                }
            }
            foreach (var C in m_Consts)
            {
                if (aExpression == C.Key)
                {
                    return(new CustomFunction(C.Key, (p) => C.Value(), null));
                }
            }
            int index2a = aExpression.IndexOf('&');
            int index2b = aExpression.IndexOf(';');

            if (index2a >= 0 && index2b >= 2)
            {
                var inner = aExpression.Substring(index2a + 1, index2b - index2a - 1);
                int bracketIndex;
                if (int.TryParse(inner, out bracketIndex) && bracketIndex >= 0 && bracketIndex < m_BracketHeap.Count)
                {
                    return(Parse(m_BracketHeap[bracketIndex]));
                }
                else
                {
                    throw new ParseException("Can't parse substitude token");
                }
            }
            double doubleValue;

            if (double.TryParse(aExpression, out doubleValue))
            {
                return(new Number(doubleValue));
            }
            if (ValidIdentifier(aExpression))
            {
                if (m_Context.Parameters.ContainsKey(aExpression))
                {
                    return(m_Context.Parameters[aExpression]);
                }
                var val = new Parameter(aExpression);
                m_Context.Parameters.Add(aExpression, val);
                return(val);
            }

            throw new ParseException("Reached unexpected end within the parsing tree");
        }