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.

Field Summary

Fields inherited from class cetus.hir.Statement

annotations, children, line_number, object_print_method, parent

Constructor Summary

NullStatement()
Create a new break statement.

Method Summary

static void	defaultPrint(NullStatement stmt, java.io.OutputStream stream) 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.
java.lang.String	toString() Returns a string representation of this statement; every child class should implement this method.

Methods inherited from class cetus.hir.Statement

annotate, annotateAfter, annotateBefore, annotationToString, clone, containsAnnotation, detach, getAnnotation, getAnnotations, getAnnotations, getAnnotations, getChildren, getParent, getProcedure, print, removeAnnotations, removeAnnotations, removeChild, setChild, setLineNumber, setParent, setPrintMethod, swapWith, toAnnotatedString, verify, where

Methods inherited from class java.lang.Object

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

Constructor Detail

NullStatement

public NullStatement()

Create a new break statement.

Method Detail

defaultPrint

public static void defaultPrint(NullStatement stmt,
                                java.io.OutputStream stream)

Prints a null statement to a stream.

Parameters:

stmt - The statement to print.

stream - The stream on which to print the statement.

toString

public java.lang.String toString()

Description copied from class: Statement

Returns a string representation of this statement; every child class should implement this method.

Specified by:

toString in class 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.