Class LabelNode

java.lang.Object

com.oracle.js.parser.ir.Node

com.oracle.js.parser.ir.Statement

com.oracle.js.parser.ir.LabelNode

All Implemented Interfaces:

LexicalContextNode, Terminal, Cloneable

public final class LabelNode
extends Statement

IR representation for a labeled statement. It implements JoinPredecessor to hold conversions that need to be effected when the block exits normally, but is also targeted by a break statement that might bring different local variable types to the join at the break point.

Field Summary

Fields inherited from class com.oracle.js.parser.ir.Node

finish, start

Constructor Summary

Constructors

Constructor	Description
LabelNode(int lineNumber, long token, int finish, String labelName, Block body)	Constructor

Method Summary

Modifier and Type	Method	Description
Node	accept(LexicalContext lc, NodeVisitor<? extends LexicalContext> visitor)	Accept function for the node given a lexical context.
<R> R	accept(LexicalContext lc, TranslatorNodeVisitor<? extends LexicalContext,R> visitor)
final Node	accept(NodeVisitor<? extends LexicalContext> visitor)	Provides a means to navigate the IR.
final <R> R	accept(TranslatorNodeVisitor<? extends LexicalContext,R> visitor)	Provides a means to navigate the IR.
Block	getBody()	Get the body of the node
String	getLabelName()	Get the label name
boolean	isTerminal()	Is this a terminal statement, i.e.
LabelNode	setBody(LexicalContext lc, Block body)	Reset the body of the node
void	toString(StringBuilder sb, boolean printType)	Print logic that decides whether to show the optimistic type or not - for example it should not be printed after just parse, when it hasn't been computed, or has been set to a trivially provable value

Methods inherited from class com.oracle.js.parser.ir.Statement

getLineNumber, hasGoto, hasTerminalFlags, isCompletionValueNeverEmpty

Methods inherited from class com.oracle.js.parser.ir.Node

clone, equals, getFinish, getSourceOrder, getStart, getToken, hashCode, isAssignment, isLoop, isTokenType, tokenType, toString, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

LabelNode

public LabelNode(int lineNumber,
 long token,
 int finish,
 String labelName,
 Block body)

Constructor

Parameters:

lineNumber - line number

token - token

finish - finish

labelName - label name

body - body of label node

Method Details

isTerminal

public boolean isTerminal()

Description copied from class: Statement

Is this a terminal statement, i.e. does it end control flow like a throw or return?

Specified by:

isTerminal in interface Terminal

Overrides:

isTerminal in class Statement

Returns:

true if this node statement is terminal

accept

public Node accept(LexicalContext lc,
 NodeVisitor<? extends LexicalContext> visitor)

Description copied from interface: LexicalContextNode

Accept function for the node given a lexical context. It must be prepared to replace itself if present in the lexical context

Parameters:

lc - lexical context

visitor - node visitor

Returns:

new node or same node depending on state change

accept

public <R> R accept(LexicalContext lc,
 TranslatorNodeVisitor<? extends LexicalContext,R> visitor)

toString

public void toString(StringBuilder sb,
 boolean printType)

Description copied from class: Node

Print logic that decides whether to show the optimistic type or not - for example it should not be printed after just parse, when it hasn't been computed, or has been set to a trivially provable value

Specified by:

toString in class Node

Parameters:

sb - string builder

printType - print type?

getBody

public Block getBody()

Get the body of the node

Returns:

the body

setBody

public LabelNode setBody(LexicalContext lc,
 Block body)

Reset the body of the node

Parameters:

lc - lexical context

body - new body

Returns:

new for node if changed or existing if not

getLabelName

public String getLabelName()

Get the label name

Returns:

the label

accept

public final Node accept(NodeVisitor<? extends LexicalContext> visitor)

Description copied from class: Node

Provides a means to navigate the IR.

Specified by:

accept in interface LexicalContextNode

Specified by:

accept in class Node

Parameters:

visitor - Node visitor.

Returns:

node the node or its replacement after visitation, null if no further visitations are required

accept

public final <R> R accept(TranslatorNodeVisitor<? extends LexicalContext,R> visitor)

Description copied from class: Node

Provides a means to navigate the IR.

Specified by:

accept in interface LexicalContextNode

Specified by:

accept in class Node

Parameters:

visitor - Node visitor.

Returns:

node the node or its replacement after visitation, null if no further visitations are required