com.oracle.js.parser.ir

Class Node

java.lang.Object

com.oracle.js.parser.ir.Node

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

Block, CaseNode, ExportNode, ExportSpecifierNode, Expression, FromNode, ImportClauseNode, ImportNode, ImportSpecifierNode, NamedExportsNode, NamedImportsNode, NameSpaceImportNode, PropertyNode, Statement

public abstract class Node
extends Object
implements Cloneable

Nodes are used to compose Abstract Syntax Trees.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	finish End of source range.
protected int	start Start of source range.

Constructor Summary

Constructors

Modifier	Constructor and Description
	Node(long token, int finish) Constructor
protected	Node(long token, int start, int finish) Constructor
protected	Node(Node node) Copy constructor
protected	Node(Node node, int finish) Copy constructor that overrides finish

Method Summary

Modifier and Type	Method and Description
abstract Node	accept(NodeVisitor<? extends LexicalContext> visitor) Provides a means to navigate the IR.
abstract <R> R	accept(TranslatorNodeVisitor<? extends LexicalContext,R> visitor) Provides a means to navigate the IR.
protected Object	clone()
boolean	equals(Object other)
int	getFinish() Get the finish position for this node in the source string
int	getSourceOrder() Integer to sort nodes in source order.
int	getStart() Get start position for node
long	getToken() Get the token for this node.
int	hashCode()
boolean	isAssignment() Is this an assignment node - for example a var node with an init or a binary node that writes to a destination
boolean	isLoop() Is this a loop node?
boolean	isTokenType(TokenType type) Tests if this node has the specific token type.
TokenType	tokenType() Returns this node's token's type.
String	toString()
String	toString(boolean includeTypeInfo) Return String representation of this Node.
abstract 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 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

start

protected final int start

Start of source range.

finish

protected final int finish

End of source range.

Constructor Detail

Node

public Node(long token,
            int finish)

Constructor

Parameters:

token - token

finish - finish

Node

protected Node(long token,
               int start,
               int finish)

Constructor

Parameters:

token - token

start - start

finish - finish

Node

protected Node(Node node)

Copy constructor

Parameters:

node - source node

Node

protected Node(Node node,
               int finish)

Copy constructor that overrides finish

Parameters:

node - source node

finish - Last character

Method Detail

isLoop

public boolean isLoop()

Is this a loop node?

Returns:

true if atom

isAssignment

public boolean isAssignment()

Is this an assignment node - for example a var node with an init or a binary node that writes to a destination

Returns:

true if assignment

accept

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

Provides a means to navigate the IR.

Parameters:

visitor - Node visitor.

Returns:

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

accept

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

Provides a means to navigate the IR.

Parameters:

visitor - Node visitor.

Returns:

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

toString

public final String toString()

Overrides:

toString in class Object

toString

public final String toString(boolean includeTypeInfo)

Return String representation of this Node.

Parameters:

includeTypeInfo - include type information or not

toString

public abstract 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

Parameters:

sb - string builder

printType - print type?

getFinish

public int getFinish()

Get the finish position for this node in the source string

Returns:

finish

getStart

public int getStart()

Get start position for node

Returns:

start position

getSourceOrder

public int getSourceOrder()

Integer to sort nodes in source order. This order is used by parser API to sort statements in correct order. By default, this is the start position of this node.

Returns:

int code to sort this node.

clone

protected Object clone()

Overrides:

clone in class Object

equals

public final boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

tokenType

public TokenType tokenType()

Returns this node's token's type. If you want to check for the node having a specific token type, consider using Node.isTokenType(TokenType) instead.

Returns:

type of token.

isTokenType

public boolean isTokenType(TokenType type)

Tests if this node has the specific token type.

Parameters:

type - a token type to check this node's token type against

Returns:

true if token types match.

getToken

public long getToken()

Get the token for this node. If you want to retrieve the token's type, consider using Node.tokenType() or Node.isTokenType(TokenType) instead.

Returns:

the token