Package com.singularsys.jepexamples.consoles

Class PrefixDumperConsole

java.lang.Object
com.singularsys.jepexamples.consoles.Console
com.singularsys.jepexamples.consoles.PrefixDumperConsole
public class PrefixDumperConsole extends Console
A console application which dumps the tree representing an equation and statistics about the tree.
See Also:

  • Constructor Details

    • PrefixDumperConsole

      public PrefixDumperConsole()

  • Method Details

    • main

      public static void main(String[] args)

    • initialise

      public void initialise()
      Description copied from class: Console
      sets up all the needed objects.
      Overrides:
      initialise in class Console

    • processEquation

      public Object processEquation(Node node) throws JepException
      Description copied from class: Console
      Performs the required operation on a node. Typically, evaluates the node and prints the value.
      Overrides:
      processEquation in class Console
      Parameters:
      node - Node representing expression
      Returns:
      The result of the calculation
      Throws:
      JepException - if a Parse or evaluation error

    • printHelp

      public void printHelp()
      Description copied from class: Console
      Print help message.
      Overrides:
      printHelp in class Console

    • testSpecialCommands

      public Console.SPEC_ACTION testSpecialCommands(String command)
      Description copied from class: Console
      Checks for special commands. For example a subclass may have a verbose mode switched on of off using the command 
       verbose on

      This method can be used detected this input, perform required actions and skip normal processing by returning true.

      In general subclasses should call the superclass methods to test for special commands that class implements

      Overrides:
      testSpecialCommands in class Console
      Returns:
      SPEC_ACTION.CONTINUE - continue processing this equation, SPEC_ACTION.BREAK - stop processing this equation and get the next line of input, SPEC_ACTION.ALTERED - the input text has been altered, SPEC_ACTION.EXIT stop the program
      See Also: