jmathlib.toolbox.io
Class exist

java.lang.Object
  extended by jmathlib.core.interpreter.RootObject
      extended by jmathlib.core.functions.Function
          extended by jmathlib.core.functions.ExternalFunction
              extended by jmathlib.toolbox.io.exist
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, ErrorCodes, TokenConstants

public class exist
extends ExternalFunction

An external function used to check if a file exists

See Also:
Serialized Form

Field Summary
 
Fields inherited from class jmathlib.core.functions.ExternalFunction
IMAG, REAL
 
Fields inherited from class jmathlib.core.functions.Function
lastModified, name, pathAndFileName
 
Fields inherited from interface jmathlib.core.constants.ErrorCodes
ERR_BRACKET_OPEN, ERR_BRACKET_ORDER, ERR_FUNCTION_NOT_FOUND, ERR_FUNCTION_NOT_IMPLEMENTED, ERR_INSUFFICIENT_PARAMETERS, ERR_INVALID_PARAMETER, ERR_LVALUE_REQUIRED, ERR_MATRIX_SINGULAR, ERR_NOT_SQUARE_MATRIX, ERR_OPNOTSUPPORTED, ERR_TOO_MANY_PARAMETERS, ERR_USER_ERROR, ERR_VARIABLE_NOTDEFINED, OK, OK_FUNCTION_PROCESS
 
Fields inherited from interface jmathlib.core.constants.TokenConstants
ADDSUB_PRIORITY, AND_PRIORITY, ANDAND_PRIORITY, ASSIGN_PRIORITY, BRACKET_PRIORITY, COMPARE_PRIORITY, CONCAT, MATRIX, MULDIV_PRIORITY, OR_PRIORITY, OROR_PRIORITY, PARAMETER, POWER_PRIORITY, RELATION_PRIORITY, SINGLE, ttDelimiter, ttNotSet, ttOperand, ttOperator
 
Constructor Summary
exist()
           
 
Method Summary
 OperandToken evaluate(Token[] operands)
          Check if file exists
 
Methods inherited from class jmathlib.core.functions.ExternalFunction
getParamCount
 
Methods inherited from class jmathlib.core.functions.Function
debugLine, equals, getLastModified, getName, getNArgIn, getNArgOut, getNoOfLeftHandArguments, getPathAndFileName, setLastModified, setName, setNoOfLeftHandArguments, setPathAndFileName, throwMathLibException
 
Methods inherited from class jmathlib.core.interpreter.RootObject
clone, getContextList, getDebug, getFunctionManager, getGlobalVariables, getGraphicsManager, getInterpreter, getPluginsManager, getVariable, getVariables, getWorkingDirectory, setConstants, setDebug, setWorkingDirectory, toString, toString
 
Methods inherited from class java.lang.Object
finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

exist

public exist()
Method Detail

evaluate

public OperandToken evaluate(Token[] operands)
Check if file exists

Specified by:
evaluate in class Function
Parameters:
0 - = filename
Returns:
1 if the file exists