com.oracle.js.parser.ir

Class BinaryNode

java.lang.Object

com.oracle.js.parser.ir.Node

com.oracle.js.parser.ir.Expression

com.oracle.js.parser.ir.BinaryNode

All Implemented Interfaces:

Assignment<Expression>, Cloneable

public final class BinaryNode
extends Expression
implements Assignment<Expression>

BinaryNode nodes represent two operand operations.

Field Summary

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

finish, start

Constructor Summary

Constructors

Constructor and Description
BinaryNode(long token, Expression lhs, Expression rhs) Constructor

Method Summary

Modifier and Type	Method and 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.
Expression	getAssignmentDest() Get assignment destination.
Expression	getAssignmentSource() Get the assignment source.
Expression	getLhs() Get the left hand side expression for this node
Expression	getRhs() Get the right hand side expression for this node
boolean	isAlwaysFalse() Returns true if the runtime value of this expression is always false when converted to boolean as per ECMAScript ToBoolean conversion.
boolean	isAlwaysTrue() Returns true if the runtime value of this expression is always true when converted to boolean as per ECMAScript ToBoolean conversion.
boolean	isAssignment() Check if this node is an assignment
boolean	isComparison() Returns true if the node is a comparison operation (either equality, inequality, or relational).
boolean	isLogical() Returns true if the node is a logical operation.
static boolean	isLogical(TokenType tokenType) Returns true if the token type represents a logical operation.
boolean	isRelational() Returns true if the node is a relational operation (less than (or equals), greater than (or equals)).
boolean	isSelfModifying() Is this a self modifying assignment?
BinaryNode	setLHS(Expression lhs) Set the left hand side expression for this node
BinaryNode	setRHS(Expression rhs) Set the right hand side expression for this node
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, isParenthesized, makeParenthesized

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryNode

public BinaryNode(long token,
                  Expression lhs,
                  Expression rhs)

Constructor

Parameters:

token - token

lhs - left hand side

rhs - right hand side

Method Detail

isComparison

public boolean isComparison()

Returns true if the node is a comparison operation (either equality, inequality, or relational).

Returns:

true if the node is a comparison operation.

isRelational

public boolean isRelational()

Returns true if the node is a relational operation (less than (or equals), greater than (or equals)).

Returns:

true if the node is a relational operation.

isLogical

public boolean isLogical()

Returns true if the node is a logical operation.

Returns:

true if the node is a logical operation.

isLogical

public static boolean isLogical(TokenType tokenType)

Returns true if the token type represents a logical operation.

Parameters:

tokenType - the token type

Returns:

true if the token type represents a logical operation.

isAssignment

public boolean isAssignment()

Check if this node is an assignment

Overrides:

isAssignment in class Node

Returns:

true if this node assigns a value

isSelfModifying

public boolean isSelfModifying()

Description copied from class: Expression

Is this a self modifying assignment?

Overrides:

isSelfModifying in class Expression

Returns:

true if self modifying, e.g. a++, or a*= 17

getAssignmentDest

public Expression getAssignmentDest()

Description copied from interface: Assignment

Get assignment destination.

Specified by:

getAssignmentDest in interface Assignment<Expression>

Returns:

the assignment destination node

getAssignmentSource

public Expression getAssignmentSource()

Description copied from interface: Assignment

Get the assignment source.

Specified by:

getAssignmentSource in interface Assignment<Expression>

Returns:

the assignment source node

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

isAlwaysFalse

public boolean isAlwaysFalse()

Description copied from class: Expression

Returns true if the runtime value of this expression is always false when converted to boolean as per ECMAScript ToBoolean conversion. Used in control flow calculations.

Overrides:

isAlwaysFalse in class Expression

Returns:

true if this expression's runtime value converted to boolean is always false.

isAlwaysTrue

public boolean isAlwaysTrue()

Description copied from class: Expression

Returns true if the runtime value of this expression is always true when converted to boolean as per ECMAScript ToBoolean conversion. Used in control flow calculations.

Overrides:

isAlwaysTrue in class Expression

Returns:

true if this expression's runtime value converted to boolean is always true.

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?

getLhs

public Expression getLhs()

Get the left hand side expression for this node

Returns:

the left hand side expression

getRhs

public Expression getRhs()

Get the right hand side expression for this node

Returns:

the left hand side expression

setLHS

public BinaryNode setLHS(Expression lhs)

Set the left hand side expression for this node

Parameters:

lhs - new left hand side expression

Returns:

a node equivalent to this one except for the requested change.

setRHS

public BinaryNode setRHS(Expression rhs)

Set the right hand side expression for this node

Parameters:

rhs - new left hand side expression

Returns:

a node equivalent to this one except for the requested change.