Class LiteralNode<T>

java.lang.Object

com.oracle.js.parser.ir.Node

com.oracle.js.parser.ir.Expression

com.oracle.js.parser.ir.LiteralNode<T>

Type Parameters:

T - the literal type

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

LiteralNode.ArrayLiteralNode, LiteralNode.PrimitiveLiteralNode

public abstract class LiteralNode<T>
extends Expression

Literal nodes represent JavaScript values.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	LiteralNode.ArrayLiteralNode	Array literal node class.
static class	LiteralNode.PrimitiveLiteralNode<T>	Super class for primitive (side-effect free) literals.

Field Summary

Fields

Modifier and Type	Field	Description
protected final T	value	Literal value

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

finish, start

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LiteralNode(long token, int finish, T value)	Constructor
protected	LiteralNode(LiteralNode<T> literalNode)	Copy constructor
protected	LiteralNode(LiteralNode<T> literalNode, T newValue)	A copy constructor with value change.

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.
List<Expression>	getElementExpressions()
Object	getObject()	Fetch Object value of node.
String	getString()	Fetch String value of node.
final T	getValue()	Get the literal node value
boolean	isArray()	Test if the value is an array
boolean	isString()	Test if the value is a string.
static LiteralNode<Object>	newInstance(long token, int finish)	Create a new null literal
static LiteralNode<Boolean>	newInstance(long token, int finish, boolean value)	Create a new boolean literal
static LiteralNode<Expression[]>	newInstance(long token, int finish, Expression[] value)	Create a new array literal of Nodes
static LiteralNode<Lexer.LexerToken>	newInstance(long token, int finish, Lexer.LexerToken value)	Create a new literal node for a lexer token
static LiteralNode<Number>	newInstance(long token, int finish, Number value)	Create a new number literal
static LiteralNode<Number>	newInstance(long token, int finish, Number value, Function<Number,com.oracle.truffle.api.strings.TruffleString> toStringConverter)	Create a new number literal
static LiteralNode<Expression[]>	newInstance(long token, int finish, List<Expression> value)	Create a new array literal of Nodes from a list of Node values
static LiteralNode<Expression[]>	newInstance(long token, int finish, List<Expression> value, boolean hasSpread, boolean hasTrailingComma)	Create a new array literal of Nodes from a list of Node values
static LiteralNode.PrimitiveLiteralNode<com.oracle.truffle.api.strings.TruffleString>	newInstance(long token, com.oracle.truffle.api.strings.TruffleString value)	Create a new string literal
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.Expression

getFinish, getFinishWithoutParens, getStart, getStartWithoutParens, isAlwaysFalse, isAlwaysTrue, isParenthesized, isSelfModifying, makeParenthesized

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

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

Methods inherited from class java.lang.Object

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

Field Details

value

protected final T value

Literal value

Constructor Details

LiteralNode

protected LiteralNode(long token,
 int finish,
 T value)

Constructor

Parameters:

token - token

finish - finish

value - the value of the literal

LiteralNode

protected LiteralNode(LiteralNode<T> literalNode)

Copy constructor

Parameters:

literalNode - source node

LiteralNode

protected LiteralNode(LiteralNode<T> literalNode,
 T newValue)

A copy constructor with value change.

Parameters:

literalNode - the original literal node

newValue - new value for this node

Method Details

getString

public String getString()

Fetch String value of node.

Returns:

String value of node.

getObject

public Object getObject()

Fetch Object value of node.

Returns:

Object value of node.

isArray

public boolean isArray()

Test if the value is an array

Returns:

True if value is an array

getElementExpressions

public List<Expression> getElementExpressions()

isString

public boolean isString()

Test if the value is a string.

Returns:

True if value is a string.

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

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?

getValue

public final T getValue()

Get the literal node value

Returns:

the value

newInstance

public static LiteralNode<Object> newInstance(long token,
 int finish)

Create a new null literal

Parameters:

token - token

finish - finish

Returns:

the new literal node

newInstance

public static LiteralNode<Boolean> newInstance(long token,
 int finish,
 boolean value)

Create a new boolean literal

Parameters:

token - token

finish - finish

value - true or false

Returns:

the new literal node

newInstance

public static LiteralNode<Number> newInstance(long token,
 int finish,
 Number value)

Create a new number literal

Parameters:

token - token

finish - finish

value - literal value

Returns:

the new literal node

newInstance

public static LiteralNode<Number> newInstance(long token,
 int finish,
 Number value,
 Function<Number,com.oracle.truffle.api.strings.TruffleString> toStringConverter)

Create a new number literal

Parameters:

token - token

finish - finish

value - literal value

Returns:

the new literal node

newInstance

public static LiteralNode.PrimitiveLiteralNode<com.oracle.truffle.api.strings.TruffleString> newInstance(long token,
 com.oracle.truffle.api.strings.TruffleString value)

Create a new string literal

Parameters:

token - token

value - string value

Returns:

the new literal node

newInstance

public static LiteralNode<Lexer.LexerToken> newInstance(long token,
 int finish,
 Lexer.LexerToken value)

Create a new literal node for a lexer token

Parameters:

token - token

finish - finish

value - lexer token value

Returns:

the new literal node

newInstance

public static LiteralNode<Expression[]> newInstance(long token,
 int finish,
 List<Expression> value)

Create a new array literal of Nodes from a list of Node values

Parameters:

token - token

finish - finish

value - literal value list

Returns:

the new literal node

newInstance

public static LiteralNode<Expression[]> newInstance(long token,
 int finish,
 List<Expression> value,
 boolean hasSpread,
 boolean hasTrailingComma)

Create a new array literal of Nodes from a list of Node values

Parameters:

token - token

finish - finish

value - literal value list

hasSpread - true if the array has a spread element

hasTrailingComma - true if the array literal has a comma after the last element

Returns:

the new literal node

newInstance

public static LiteralNode<Expression[]> newInstance(long token,
 int finish,
 Expression[] value)

Create a new array literal of Nodes

Parameters:

token - token

finish - finish

value - literal value array

Returns:

the new literal node