Package gnu.jel

Class OPcondtnl

java.lang.Object
gnu.jel.OP
gnu.jel.OPcondtnl

public class OPcondtnl extends OP
A tree node, representing conditional.
  • Constructor Details

    • OPcondtnl

      public OPcondtnl(Stack<OP> paramOPs) throws CompilationException
      Creates conditional operator.

      On entry the paramOPs should contain <boolean> <result of the 1st branch> <result of the 2nn branch>.

      Parameters:
      paramOPs - stack holding the operands
      Throws:
      CompilationException
  • Method Details

    • compile

      public void compile(ClassFile cf)
      Description copied from class: OP
      Called to generate the code implementing this OP.
      Specified by:
      compile in class OP
      Parameters:
      cf - class file with a new open method to write the code into.
    • eval

      public Object eval() throws Exception
      Description copied from class: OP
      Called to evaluate this node and all its sub-nodes.

      Upon success this node is to be replaced by the constant node holding the returned object.

      Specified by:
      eval in class OP
      Returns:
      an object to which this node evaluates
      Throws:
      Exception