cetus.hir

Class NullStatement

java.lang.Object

cetus.hir.Statement

cetus.hir.NullStatement

All Implemented Interfaces:

Annotatable, Printable, Traversable, java.lang.Cloneable

public class NullStatement
extends Statement

Represents an empty statement. Empty statements need to be preserved by the IR because there are some coding "tricks" that rely on them. For example, because a label must appear before a statement, there is no way of putting a label at the end of a block, so it's common to find a labeled null statement there.

Constructor Summary

Constructors

Constructor and Description
NullStatement() Creates a new null statement.

Method Summary

Methods

Modifier and Type	Method and Description
NullStatement	clone() Returns a clone of the null statement.
static void	defaultPrint(NullStatement s, java.io.PrintWriter o) Prints a null statement to a stream.
static void	setClassPrintMethod(java.lang.reflect.Method m) Overrides the class print method, so that all subsequently created objects will use the supplied method.

Methods inherited from class cetus.hir.Statement

annotate, annotateAfter, annotateBefore, containsAnnotation, detach, equals, getAnnotation, getAnnotations, getAnnotations, getAnnotations, getChildren, getParent, getProcedure, hashCode, print, removeAnnotations, removeAnnotations, removeChild, setChild, setLineNumber, setParent, setPrintMethod, swapWith, toString, verify, where

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

NullStatement

public NullStatement()

Creates a new null statement.

Method Detail

defaultPrint

public static void defaultPrint(NullStatement s,
                java.io.PrintWriter o)

Prints a null statement to a stream.

Parameters:

s - The statement to print.

o - The writer on which to print the statement.

setClassPrintMethod

public static void setClassPrintMethod(java.lang.reflect.Method m)

Overrides the class print method, so that all subsequently created objects will use the supplied method.

Parameters:

m - The new print method.

clone

public NullStatement clone()

Returns a clone of the null statement.

Overrides:

clone in class Statement