Class Statement

java.lang.Object

com.oracle.js.parser.ir.Node

com.oracle.js.parser.ir.Statement

All Implemented Interfaces:

Terminal, Cloneable

Direct Known Subclasses:

BlockStatement, CatchNode, DebuggerNode, EmptyNode, ExpressionStatement, IfNode, JumpStatement, LabelNode, LoopNode, ReturnNode, SwitchNode, ThrowNode, TryNode, VarNode, WithNode

public abstract class Statement
extends Node
implements Terminal

Statement is something that becomes code and can be stepped past. A block is made up of statements. The only node subclass that needs to keep token and location information is the Statement

Field Summary

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

finish, start

Constructor Summary

Constructors

Modifier	Constructor	Description
	Statement(int lineNumber, long token, int finish)	Constructor
	Statement(int lineNumber, long token, int start, int finish)	Constructor
protected	Statement(Statement node)	Copy constructor

Method Summary

Modifier and Type	Method	Description
int	getLineNumber()	Return the line number
boolean	hasGoto()	Check if this statement repositions control flow with goto like semantics, for example BreakNode or a ForNode with no test
final boolean	hasTerminalFlags()	Check if this statement has terminal flags, i.e.
boolean	isCompletionValueNeverEmpty()
boolean	isTerminal()	Is this a terminal statement, i.e.

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

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

Methods inherited from class java.lang.Object

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

Constructor Details

Statement

public Statement(int lineNumber,
 long token,
 int finish)

Constructor

Parameters:

lineNumber - line number

token - token

finish - finish

Statement

public Statement(int lineNumber,
 long token,
 int start,
 int finish)

Constructor

Parameters:

lineNumber - line number

token - token

start - start

finish - finish

Statement

protected Statement(Statement node)

Copy constructor

Parameters:

node - source node

Method Details

getLineNumber

public int getLineNumber()

Return the line number

Returns:

line number

isTerminal

public boolean isTerminal()

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

Specified by:

isTerminal in interface Terminal

Returns:

true if this node statement is terminal

hasGoto

public boolean hasGoto()

Check if this statement repositions control flow with goto like semantics, for example BreakNode or a ForNode with no test

Returns:

true if statement has goto semantics

hasTerminalFlags

public final boolean hasTerminalFlags()

Check if this statement has terminal flags, i.e. ends or breaks control flow

Returns:

true if has terminal flags

isCompletionValueNeverEmpty

public boolean isCompletionValueNeverEmpty()

Returns:

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