Package com.tonic.analysis.source.ast.expr

Class LambdaExpr

java.lang.Object

com.tonic.analysis.source.ast.expr.LambdaExpr

All Implemented Interfaces:

ASTNode, Expression

public final class LambdaExpr
extends Object
implements Expression

A lambda expression: (params) -> body, whose body is either an Expression or a Statement block.

Constructor Summary

Constructors

Constructor	Description
LambdaExpr(List<LambdaParameter> parameters, ASTNode body, SourceType type)	Creates a lambda with an unknown source location.
LambdaExpr(List<LambdaParameter> parameters, ASTNode body, SourceType type, SourceLocation location)	Creates a lambda over a defensive copy of the parameters and reparents the body.

Method Summary

Modifier and Type	Method	Description
<T> T	accept(SourceVisitor<T> visitor)	Accepts a visitor for this node.
Statement	getBlockBody()	Returns the body as a statement block.
ASTNode	getBody()
List<ASTNode>	getChildren()	Lists the direct children a node holds, in source order.
Expression	getExpressionBody()	Returns the body as an expression.
String	getImplMethodKey()
SourceLocation	getLocation()	Gets the source location of this node.
int	getParameterCount()
List<LambdaParameter>	getParameters()
ASTNode	getParent()	Gets the parent node in the AST tree.
SourceType	getType()	Gets the inferred type of this expression.
boolean	hasImplicitParameterTypes()
boolean	isBlockBody()
boolean	isExpressionBody()
void	setBody(ASTNode body)	Replaces the body, reparenting the new child.
void	setParent(ASTNode parent)	Sets the parent node in the AST tree.
String	toString()
LambdaExpr	withBody(ASTNode body)	Replaces the body, reparenting the new child and releasing the former one.
LambdaExpr	withImplMethodKey(String implMethodKey)	Records the synthetic implementation method key this lambda was built from.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.tonic.analysis.source.ast.ASTNode

deepClone, findAll, findAll, findAncestor, findFirst, findFirst, getRoot, isDescendantOf, remove, replaceWith, stream, stream, walk

Constructor Detail

LambdaExpr

public LambdaExpr(List<LambdaParameter> parameters,
                  ASTNode body,
                  SourceType type,
                  SourceLocation location)

Creates a lambda over a defensive copy of the parameters and reparents the body.

Parameters:

parameters - the lambda parameters, or null for none

body - the body, an Expression or a Statement block

type - the functional interface type of the lambda

location - the source location, or null for unknown

Throws:

NullPointerException - if body or type is null

LambdaExpr

public LambdaExpr(List<LambdaParameter> parameters,
                  ASTNode body,
                  SourceType type)

Creates a lambda with an unknown source location.

Parameters:

parameters - the lambda parameters, or null for none

body - the body, an Expression or a Statement block

type - the functional interface type of the lambda

Throws:

NullPointerException - if body or type is null

Method Detail

getParameters

public List<LambdaParameter> getParameters()

Returns:

the parameters

getBody

public ASTNode getBody()

Returns:

the body

setBody

public void setBody(ASTNode body)

Replaces the body, reparenting the new child.

Parameters:

body - the new body, an Expression or a Statement block

getType

public SourceType getType()

Description copied from interface: Expression

Gets the inferred type of this expression.

Specified by:

getType in interface Expression

Returns:

the type

getLocation

public SourceLocation getLocation()

Description copied from interface: ASTNode

Gets the source location of this node.

Specified by:

getLocation in interface ASTNode

Returns:

the location

getParent

public ASTNode getParent()

Description copied from interface: ASTNode

Gets the parent node in the AST tree.

Specified by:

getParent in interface ASTNode

Returns:

the parent

setParent

public void setParent(ASTNode parent)

Description copied from interface: ASTNode

Sets the parent node in the AST tree.

Specified by:

setParent in interface ASTNode

Parameters:

parent - the enclosing AST node

getImplMethodKey

public String getImplMethodKey()

Returns:

the impl method key

withBody

public LambdaExpr withBody(ASTNode body)

Replaces the body, reparenting the new child and releasing the former one.

Parameters:

body - the new body, an Expression or a Statement block

Returns:

this expression

withImplMethodKey

public LambdaExpr withImplMethodKey(String implMethodKey)

Records the synthetic implementation method key this lambda was built from.

Parameters:

implMethodKey - name plus descriptor, e.g. lambda$foo$0()V; null leaves the key unset

Returns:

this expression

isExpressionBody

public boolean isExpressionBody()

Returns:

true if the body is a single expression

isBlockBody

public boolean isBlockBody()

Returns:

true if the body is a statement block

getExpressionBody

public Expression getExpressionBody()

Returns the body as an expression.

Returns:

the expression body

Throws:

IllegalStateException - if the body is a statement block

getBlockBody

public Statement getBlockBody()

Returns the body as a statement block.

Returns:

the block body

Throws:

IllegalStateException - if the body is a single expression

hasImplicitParameterTypes

public boolean hasImplicitParameterTypes()

Returns:

true if every parameter has an implicit type

getParameterCount

public int getParameterCount()

Returns:

the number of parameters

getChildren

public List<ASTNode> getChildren()

Description copied from interface: ASTNode

Lists the direct children a node holds, in source order.

Specified by:

getChildren in interface ASTNode

Returns:

the direct children, empty for a leaf

accept

public <T> T accept(SourceVisitor<T> visitor)

Description copied from interface: ASTNode

Accepts a visitor for this node.

Specified by:

accept in interface ASTNode

Type Parameters:

T - the return type of the visitor

Parameters:

visitor - the visitor to accept

Returns:

the result from the visitor

toString

public String toString()

Overrides:

toString in class Object