Package jmri.jmrit.logixng

Interface Stack

All Known Implementing Classes:
DefaultStack
public interface Stack
A table that is a stack

  • Method Details

    • push

      void push(Stack.ValueAndType value)
      Pushes a value on the top of the stack so the stack grow.
      Parameters:
      value - the value to push to the stack

    • pop

      Object pop()
      Pops the topmost value off the top of the stack so the stack shrinks.
      Returns:
      the value that is on the top of the stack

    • getValueAtIndex

      Object getValueAtIndex(int index)
      Get the value at an index
      Parameters:
      index - the index from bottom of the table
      Returns:
      value the new value

    • setValueAtIndex

      void setValueAtIndex(int index, Object value)
      Set the value at an index
      Parameters:
      index - the index from bottom of the table
      value - the new value

    • getValueAndTypeAtIndex

      Stack.ValueAndType getValueAndTypeAtIndex(int index)
      Get the value and type at an index
      Parameters:
      index - the index from bottom of the table
      Returns:
      value and type the new value

    • setValueAndTypeAtIndex

      void setValueAndTypeAtIndex(int index, Stack.ValueAndType valueAndType)
      Set the value at an index
      Parameters:
      index - the index from bottom of the table
      valueAndType - the new value and type

    • getCount

      int getCount()
      Get the number of items on the stack
      Returns:
      the number of items

    • setCount

      void setCount(int newCount)
      Reset the number of items on the stack. This is used when parameters are put on the stack before a call to a module and those parameters needs to be removed when the module returns. The new count must be less than or equal to the current number of items.
      Parameters:
      newCount - the new number of items