package LBJ2.IR;
import LBJ2.Pass;
/**
* No statement here.
*
* @author Nick Rizzolo
**/
public class EmptyStatement extends Statement
{
/**
* Full constructor.
*
* @param line The line on which the source code represented by this
* node is found.
* @param byteOffset The byte offset from the beginning of the source file
* at which the source code represented by this node is
* found.
**/
public EmptyStatement(int line, int byteOffset) {
super(line, byteOffset);
}
/**
* Returns an iterator used to successively access the children of this
* node.
*
* @return An iterator used to successively access the children of this
* node.
**/
public ASTNodeIterator iterator() { return new ASTNodeIterator(0); }
/**
* Creates a new object with the same primitive data, and recursively
* creates new member data objects as well.
*
* @return The clone node.
**/
public Object clone() { return new EmptyStatement(-1, -1); }
/** Returns a hash code for this {@link ASTNode}. */
public int hashCode() {
return 31;
}
/**
* Distinguishes this {@link ASTNode} from other objects according to its
* contents recursively.
*
* @param o Another object.
* @return <code>true</code> iff this node is equal to <code>o</code>.
**/
public boolean equals(Object o) {
return o instanceof EmptyStatement;
}
/**
* Ensures that the correct <code>run()</code> method is called for this
* type of node.
*
* @param pass The pass whose <code>run()</code> method should be called.
**/
public void runPass(Pass pass) { pass.run(this); }
/**
* Writes a string representation of this <code>ASTNode</code> to the
* specified buffer. The representation written is parsable by the LBJ2
* compiler, but not very readable.
*
* @param buffer The buffer to write to.
**/
public void write(StringBuffer buffer) { buffer.append(";"); }
}