public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
FunctionInfo functionInfo = FormulaBuilderTools.Instance.GetFunctionElements(pattern);
if (!functionInfo.IsOK)
{
return(false);
}
string functionName = functionInfo.Name;
if (!_functions.Keys.Contains(functionName))
{
return(false);
}
Type functionType = _functions[functionName];
item = (FunctionItem)Activator.CreateInstance(functionType);
item.Pattern = pattern;
string[] args = functionInfo.Arguments.Split(FUNCTION_ARGUMENT_SEPARATOR);
foreach (string arg in args)
{
FormulaItem argItem = builder.Create(arg);
(item as FunctionItem).Arguments.Add(argItem);
}
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
string trimmed = pattern.Trim();
ValueInfo valueInfo = FormulaBuilderTools.Instance.GetValueInfo(trimmed);
if (!valueInfo.IsOk)
{
return(false);
}
item = new ValueItem();
item.Pattern = pattern;
(item as ValueItem).Value = valueInfo.Value;
UnitItem unit = new UnitItem();
unit.Unit = valueInfo.Unit;
unit.Pattern = valueInfo.Unit;
(item as ValueItem).Arguments.Add(unit);
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
string trimmed = pattern.Trim();
bool isMatchRound = Regex.IsMatch(trimmed, REGEX_ROUND);
bool isMatchSquared = Regex.IsMatch(trimmed, REGEX_SQUARED);
bool isAnyMatch = isMatchRound || isMatchSquared;
if (!isAnyMatch)
{
return(false);
}
item = new BracketItem();
item.Pattern = pattern;
string args = null;
if (isMatchRound)
{
args = RegexTools.GetValue(pattern, REGEX_ROUND, "args");
}
if (isMatchSquared)
{
args = RegexTools.GetValue(pattern, REGEX_SQUARED, "args");
}
FormulaItem argsItem = builder.Create(args);
(item as BracketItem).Arguments.Add(argsItem);
if (isMatchRound)
{
(item as BracketItem).TypeOfBracket = BracketShapeType.Round;
}
if (isMatchSquared)
{
(item as BracketItem).TypeOfBracket = BracketShapeType.Squared;
}
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
string trimmed = pattern.Trim();
item = null;
bool isSymbol = Regex.IsMatch(trimmed, REGEX) || Regex.IsMatch(trimmed, REGEX2);
if (!isSymbol)
{
return(false);
}
item = new SymbolItem();
item.Pattern = pattern;
(item as SymbolItem).Symbol = trimmed;
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
pattern = pattern.Trim();
string args = RegexTools.GetValue(pattern, REGEX, "args");
if (string.IsNullOrEmpty(args))
{
return(false);
}
item = new FunctionAbs();
item.Pattern = pattern;
FormulaItem arg = builder.Create(args);
(item as FunctionAbs).Arguments.Add(arg);
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
List <string> elements = FormulaBuilderTools.Instance.GetElements(pattern, OperationType.Power);
if (elements.Count != 3 || elements[1] != "^")
{
return(false);
}
FormulaItem baseItem = builder.Create(elements[0]);
FormulaItem exponentItem = builder.Create(elements[2]);
item = new FunctionPow();
item.Pattern = pattern;
(item as FunctionItem).Arguments.Add(baseItem);
(item as FunctionItem).Arguments.Add(exponentItem);
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
List <string> elements = FormulaBuilderTools.Instance.GetElements(pattern, OperationType.AddSubstr);
if (elements.Count < 3)
{
return(false);
}
item = new FunctionSum();
item.Pattern = pattern;
for (int i = 0; i < elements.Count; ++i)
{
string element = elements[i];
if (element == "+" || element == "-")
{
continue;
}
double coeff = 1.0;
if (i > 0)
{
coeff = (elements[i - 1] == "+") ? 1.0 : -1.0;
}
FormulaItem arg = builder.Create(element);
(item as FunctionSum).Arguments.Add(arg);
(item as FunctionSum).Coeffs.Add(coeff);
}
return(true);
}
public override bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item)
{
item = null;
List <string> elements = FormulaBuilderTools.Instance.GetElements(pattern, OperationType.MultiDivide);
if (elements.Count < 3)
{
return(false);
}
item = new FunctionMultiply();
item.Pattern = pattern;
for (int i = 0; i < elements.Count; ++i)
{
string element = elements[i];
if (element == "*" || element == "/")
{
continue;
}
bool coeff = true;
if (i > 0)
{
coeff = (elements[i - 1] == "*") ? true : false;
}
FormulaItem arg = builder.Create(element);
(item as FunctionMultiply).Arguments.Add(arg);
(item as FunctionMultiply).Flags.Add(coeff);
}
return(true);
}
public abstract bool TryCreate(string pattern, FormulaBuilder builder, out FormulaItem item);
