/**
* Constructor for function definition in natural math language,
* for instance providing on string "f(x,y) = sin(x) + cos(x)"
* is enough to define function "f" with parameters "x and y"
* and function body "sin(x) + cos(x)".
*
* @param functionDefinitionString Function definition in the form
* of one String, ie "f(x,y) = sin(x) + cos(x)"
* @param elements Optional elements list (variadic - comma separated)
* of types: Argument, Constant, Function
*
* @see PrimitiveElement
*
*/
public Function(String functionDefinitionString, params PrimitiveElement[] elements) : base(Function.TYPE_ID)
{
parametersNumber = 0;
if (mXparser.regexMatch(functionDefinitionString, ParserSymbol.functionDefStrRegExp))
{
HeadEqBody headEqBody = new HeadEqBody(functionDefinitionString);
this.functionName = headEqBody.headTokens[0].tokenStr;
functionExpression = new Expression(headEqBody.bodyStr, elements);
functionExpression.setDescription(headEqBody.headStr);
if (headEqBody.headTokens.Count > 1)
{
Token t;
for (int i = 1; i < headEqBody.headTokens.Count; i++)
{
t = headEqBody.headTokens[i];
if (t.tokenTypeId != ParserSymbol.TYPE_ID)
{
functionExpression.addArguments(new Argument(t.tokenStr));
}
}
}
parametersNumber = functionExpression.getArgumentsNumber() - countRecursiveArguments();
description = "";
addFunctions(this);
}
else
{
functionExpression = new Expression();
functionExpression.setDescription(functionDefinitionString);
String errorMessage = ""; errorMessage = errorMessage + "\n [" + functionDefinitionString + "] " + "--> pattern not mathes: f(x1,...,xn) = ... reg exp: " + ParserSymbol.functionDefStrRegExp;
functionExpression.setSyntaxStatus(Expression.SYNTAX_ERROR_OR_STATUS_UNKNOWN, errorMessage);
}
}
/**
* Default constructor - creates argument based on the argument definition string.
*
* @param argumentDefinitionString Argument definition string, i.e.:
* <ul>
* <li>'x' - only argument name
* <li>'x=5' - argument name and argument value
* <li>'x=2*5' - argument name and argument value given as simple expression
* <li>'x=2*y' - argument name and argument expression (dependent argument 'x' on argument 'y')
* </ul>
*
* @param forceDependent If true parser will try to create dependent argument
* @param elements Optional parameters (comma separated) such as Arguments, Constants, Functions
*/
public Argument(String argumentDefinitionString, bool forceDependent, params PrimitiveElement[] elements) : base(Argument.TYPE_ID)
{
if (mXparser.regexMatch(argumentDefinitionString, ParserSymbol.nameOnlyTokenRegExp))
{
argumentName = argumentDefinitionString;
argumentValue = ARGUMENT_INITIAL_VALUE;
argumentType = FREE_ARGUMENT;
argumentExpression = new Expression(elements);
}
else if (mXparser.regexMatch(argumentDefinitionString, ParserSymbol.constArgDefStrRegExp))
{
HeadEqBody headEqBody = new HeadEqBody(argumentDefinitionString);
argumentName = headEqBody.headTokens[0].tokenStr;
Expression bodyExpr = new Expression(headEqBody.bodyStr);
if (forceDependent == true)
{
argumentExpression = bodyExpr;
addDefinitions(elements);
argumentType = DEPENDENT_ARGUMENT;
}
else
{
double bodyValue = bodyExpr.calculate();
if ((bodyExpr.getSyntaxStatus() == Expression.NO_SYNTAX_ERRORS) && (bodyValue != Double.NaN))
{
argumentExpression = new Expression();
argumentValue = bodyValue;
argumentType = FREE_ARGUMENT;
}
else
{
argumentExpression = bodyExpr;
addDefinitions(elements);
argumentType = DEPENDENT_ARGUMENT;
}
}
}
else if (mXparser.regexMatch(argumentDefinitionString, ParserSymbol.functionDefStrRegExp))
{
HeadEqBody headEqBody = new HeadEqBody(argumentDefinitionString);
argumentName = headEqBody.headTokens[0].tokenStr;
argumentExpression = new Expression(headEqBody.bodyStr, elements);
argumentExpression.setDescription(headEqBody.headStr);
argumentValue = ARGUMENT_INITIAL_VALUE;
argumentType = DEPENDENT_ARGUMENT;
n = new Argument(headEqBody.headTokens[2].tokenStr);
}
else
{
argumentValue = ARGUMENT_INITIAL_VALUE;
argumentType = FREE_ARGUMENT;
argumentExpression = new Expression();
argumentExpression.setSyntaxStatus(SYNTAX_ERROR_OR_STATUS_UNKNOWN, "[" + argumentDefinitionString + "] " + "Invalid argument definition (patterns: 'x', 'x=5', 'x=5+3/2', 'x=2*y').");
}
argumentBodyType = BODY_RUNTIME;
setSilentMode();
description = "";
}
/**
* Constructor for function definition in natural math language,
* for instance providing on string "f(x,y) = sin(x) + cos(x)"
* is enough to define function "f" with parameters "x and y"
* and function body "sin(x) + cos(x)".
*
* @param constantDefinitionString Constant definition in the form
* of one String, ie "c = 2" or "c = 2*sin(pi/3)"
* @param elements Optional parameters (comma separated) such as Arguments, Constants, Functions
*/
public Constant(CancellationToken token, String constantDefinitionString, params PrimitiveElement[] elements) : base(Constant.TYPE_ID)
{
description = "";
syntaxStatus = SYNTAX_ERROR_OR_STATUS_UNKNOWN;
relatedExpressionsList = new List <Expression>();
if (mXparser.regexMatch(constantDefinitionString, ParserSymbol.constUnitgDefStrRegExp))
{
HeadEqBody headEqBody = new HeadEqBody(token, constantDefinitionString);
constantName = headEqBody.headTokens[0].tokenStr;
Expression bodyExpression = new Expression(headEqBody.bodyStr, elements);
constantValue = bodyExpression.calculate(token);
syntaxStatus = bodyExpression.getSyntaxStatus();
errorMessage = bodyExpression.getErrorMessage();
}
else
{
errorMessage = "[" + constantDefinitionString + "] " + "--> pattern not mathes: " + ParserSymbol.constArgDefStrRegExp;
}
}