toolbus.process
Class Alternative

java.lang.Object
  toolbus.process.ProcessExpression
      toolbus.process.Alternative

public class Alternative
extends ProcessExpression

Alternative is the abstract syntax operator for the choice operator (+) in Tscripts. It is compiled away and does not exist during execution.

Field Summary

private ProcessExpression	left
private ProcessExpression	right

Fields inherited from class toolbus.process.ProcessExpression

posInfo, tbfactory

Constructor Summary

Alternative(ProcessExpression left, ProcessExpression right, TBTermFactory tbfactory, PositionInformation posInfo)

Method Summary

protected void	compile(ProcessInstance P, java.util.Stack<java.lang.String> calls, State follow)
protected void	computeFirst()
protected ProcessExpression	copy()
AtomList	getAtoms()
protected void	replaceFormals(Environment env)
java.lang.String	toString()

Methods inherited from class toolbus.process.ProcessExpression

addToFirst, addToFollow, getFirst, getFollow, getPosInfo, setFirst, setFollow

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

left

private final ProcessExpression left

right

private final ProcessExpression right

Constructor Detail

Alternative

public Alternative(ProcessExpression left,
                   ProcessExpression right,
                   TBTermFactory tbfactory,
                   PositionInformation posInfo)

Method Detail

copy

protected ProcessExpression copy()

Specified by:

copy in class ProcessExpression

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

computeFirst

protected void computeFirst()

Specified by:

computeFirst in class ProcessExpression

compile

protected void compile(ProcessInstance P,
                       java.util.Stack<java.lang.String> calls,
                       State follow)
                throws ToolBusException

Specified by:

compile in class ProcessExpression

Throws:

ToolBusException

replaceFormals

protected void replaceFormals(Environment env)
                       throws ToolBusException

Specified by:

replaceFormals in class ProcessExpression

Throws:

ToolBusException

getAtoms

public AtomList getAtoms()

Specified by:

getAtoms in class ProcessExpression