comp
Class WhileNode

java.lang.Object
  |
  +--comp.Node
        |
        +--comp.WhileNode

class WhileNode

extends Node

A while loop. Contains a test expression and a body.

Field Summary

(package private) BlockNode	body
(package private) ExprNode	test

Fields inherited from class comp.Node

asm, globalScope, labelCount, strings

Constructor Summary

WhileNode(ExprNode test, BlockNode body)

Method Summary

void	addDefs(Scope s) Add any variable definitions made by this node to the given scope.
void	asHTML(java.io.PrintStream out) Process the body.
java.lang.String	codeGen(Scope scope, RegBank bank) Generate code for the test.
java.lang.String	toString()

Methods inherited from class comp.Node

addString, getLabel, lvalue, reset, rvalue

Methods inherited from class java.lang.Object

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

Field Detail

test

ExprNode test

body

BlockNode body

Constructor Detail

WhileNode

public WhileNode(ExprNode test,
                 BlockNode body)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

codeGen

public java.lang.String codeGen(Scope scope,
                                RegBank bank)

Generate code for the test. If it is false, jump to the bottom, otherwise fall through into the body. The body is rooted with a jump back up to the top.

Specified by:

codeGen in class Node

addDefs

public void addDefs(Scope s)

Description copied from class: Node

Add any variable definitions made by this node to the given scope.

Overrides:

addDefs in class Node

asHTML

public void asHTML(java.io.PrintStream out)

Process the body.

Specified by:

asHTML in class Node