Class CatchNode

java.lang.Object

com.oracle.js.parser.ir.Node

com.oracle.js.parser.ir.Statement

com.oracle.js.parser.ir.CatchNode

All Implemented Interfaces:

Terminal, Cloneable

public final class CatchNode
extends Statement

IR representation of a catch clause.

Field Summary

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

finish, start

Constructor Summary

Constructors

Constructor	Description
CatchNode(int lineNumber, long token, int finish, IdentNode exception, Expression pattern, Expression exceptionCondition, Block body, boolean isSyntheticRethrow)	Constructors

Method Summary

Modifier and Type	Method	Description
Node	accept(NodeVisitor<? extends LexicalContext> visitor)	Assist in IR navigation.
<R> R	accept(TranslatorNodeVisitor<? extends LexicalContext,R> visitor)	Provides a means to navigate the IR.
Block	getBody()	Get the body for this catch block
Expression	getDestructuringPattern()	Get the exception destructuring pattern for this catch block
Expression	getException()	Get the identifier representing the exception thrown
Expression	getExceptionCondition()	Get the exception condition for this catch block
boolean	isSyntheticRethrow()	Is this catch block a non-JavaScript constructor, for example created as part of the rethrow mechanism of a finally block in Lower? Then we just pass the exception on and need not unwrap whatever is in the ECMAException object catch symbol
boolean	isTerminal()	Is this a terminal statement, i.e.
CatchNode	setDestructuringPattern(Expression pattern)	Resets the exception destructuring pattern of a catch block
CatchNode	setException(IdentNode exception)	Resets the exception of a catch block
CatchNode	setExceptionCondition(Expression exceptionCondition)	Reset the exception condition for this catch block
void	toString(StringBuilder sb, boolean printTypes)	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

CatchNode

public CatchNode(int lineNumber,
 long token,
 int finish,
 IdentNode exception,
 Expression pattern,
 Expression exceptionCondition,
 Block body,
 boolean isSyntheticRethrow)

Constructors

Parameters:

lineNumber - lineNumber

token - token

finish - finish

exception - variable name of exception

pattern - catch parameter destructuring assignment

exceptionCondition - exception condition

body - catch body

isSyntheticRethrow - true if this node is a synthetically generated rethrow node.

Method Details

accept

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

Assist in IR navigation.

Specified by:

accept in class Node

Parameters:

visitor - IR navigating 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

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

toString

public void toString(StringBuilder sb,
 boolean printTypes)

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

printTypes - print type?

getException

public Expression getException()

Get the identifier representing the exception thrown

Returns:

the exception identifier

getExceptionCondition

public Expression getExceptionCondition()

Get the exception condition for this catch block

Returns:

the exception condition

setExceptionCondition

public CatchNode setExceptionCondition(Expression exceptionCondition)

Reset the exception condition for this catch block

Parameters:

exceptionCondition - the new exception condition

Returns:

new or same CatchNode

getBody

public Block getBody()

Get the body for this catch block

Returns:

the catch block body

setException

public CatchNode setException(IdentNode exception)

Resets the exception of a catch block

Parameters:

exception - new exception

Returns:

new catch node if changed, same otherwise

getDestructuringPattern

public Expression getDestructuringPattern()

Get the exception destructuring pattern for this catch block

Returns:

the destructuring pattern

setDestructuringPattern

public CatchNode setDestructuringPattern(Expression pattern)

Resets the exception destructuring pattern of a catch block

Parameters:

pattern - new pattern

Returns:

new catch node if changed, same otherwise

isSyntheticRethrow

public boolean isSyntheticRethrow()

Is this catch block a non-JavaScript constructor, for example created as part of the rethrow mechanism of a finally block in Lower? Then we just pass the exception on and need not unwrap whatever is in the ECMAException object catch symbol

Returns:

true if a finally synthetic rethrow