com.oracle.js.parser.ir

Class ReturnNode

java.lang.Object

com.oracle.js.parser.ir.Node

com.oracle.js.parser.ir.Statement

com.oracle.js.parser.ir.ReturnNode

All Implemented Interfaces:

Terminal, Cloneable

public class ReturnNode
extends Statement

IR representation for return statements.

Field Summary

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

finish, start

Constructor Summary

Constructors

Constructor and Description
ReturnNode(int lineNumber, long token, int finish, Expression expression) Constructor

Method Summary

Modifier and Type	Method and Description
Node	accept(NodeVisitor<? extends LexicalContext> visitor) Provides a means to navigate the IR.
<R> R	accept(TranslatorNodeVisitor<? extends LexicalContext,R> visitor) Provides a means to navigate the IR.
Expression	getExpression() Get the expression this node returns
boolean	isCompletionValueNeverEmpty()
boolean	isInTerminalPosition()
boolean	isTerminal() Is this a terminal statement, i.e.
ReturnNode	setExpression(Expression expression) Reset the expression this node returns
void	setInTerminalPosition(boolean inTerminalPosition)
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

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

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ReturnNode

public ReturnNode(int lineNumber,
                  long token,
                  int finish,
                  Expression expression)

Constructor

Parameters:

lineNumber - line number

token - token

finish - finish

expression - expression to return

Method Detail

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(NodeVisitor<? extends LexicalContext> visitor)

Description copied from class: Node

Provides a means to navigate the IR.

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

Description copied from class: Node

Provides a means to navigate the IR.

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

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?

getExpression

public Expression getExpression()

Get the expression this node returns

Returns:

return expression, or null if void return

setExpression

public ReturnNode setExpression(Expression expression)

Reset the expression this node returns

Parameters:

expression - new expression, or null if void return

Returns:

new or same return node

isInTerminalPosition

public boolean isInTerminalPosition()

setInTerminalPosition

public void setInTerminalPosition(boolean inTerminalPosition)

isCompletionValueNeverEmpty

public boolean isCompletionValueNeverEmpty()

Overrides:

isCompletionValueNeverEmpty in class Statement

Returns:

true if the completion value of this statement is never the value empty