Package software.amazon.smithy.rulesengine.language.syntax.fn

Class IsSet

java.lang.Object

software.amazon.smithy.rulesengine.language.util.MandatorySourceLocation

software.amazon.smithy.rulesengine.language.syntax.expr.Expression

software.amazon.smithy.rulesengine.language.syntax.fn.Function

software.amazon.smithy.rulesengine.language.syntax.fn.IsSet

All Implemented Interfaces:

FromSourceLocation, ToNode, Into<Condition>, TypeCheck

public final class IsSet
extends Function

A rule-set function for determining whether a reference parameter is set.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ID

Fields inherited from class software.amazon.smithy.rulesengine.language.syntax.fn.Function

functionNode

Constructor Summary

Constructors

Constructor	Description
IsSet(FunctionNode functionNode)

Method Summary

Modifier and Type	Method	Description
<R> R	accept(ExpressionVisitor<R> visitor)	Invoke the ExpressionVisitor functions for this expression.
Expression	getTarget()
static IsSet	ofExpression(Expression expression)	Returns a new IsSet function taking the given expression as an argument.
protected Type	typeCheckArgument(Scope<Type> scope, Type.Option arg)
protected Type	typeCheckLocal(Scope<Type> scope)

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.fn.Function

condition, condition, equals, expectOneArgument, getArguments, getName, getSourceLocation, hashCode, into, toNode, toString

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.expr.Expression

equal, equal, fromNode, getAttr, getAttr, isSet, isValidHostLabel, isVirtualHostableS3Bucket, literal, not, of, of, of, parseArn, parseShortform, parseUrl, reference, substring, template, type, typeCheck

Methods inherited from class java.lang.Object

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

Field Details

ID

public static final String ID

See Also:

• Constant Field Values

Constructor Details

IsSet

public IsSet(FunctionNode functionNode)

Method Details

ofExpression

public static IsSet ofExpression(Expression expression)

Returns a new IsSet function taking the given expression as an argument.

Parameters:

expression - the argument to IsSet.

Returns:

new IsSet instance.

typeCheckArgument

protected Type typeCheckArgument(Scope<Type> scope,
 Type.Option arg)

accept

public <R> R accept(ExpressionVisitor<R> visitor)

Description copied from class: Expression

Invoke the ExpressionVisitor functions for this expression.

Specified by:

accept in class Expression

Type Parameters:

R - the visitor return type.

Parameters:

visitor - the visitor to be invoked.

Returns:

the return value of the visitor.

getTarget

public Expression getTarget()

typeCheckLocal

protected Type typeCheckLocal(Scope<Type> scope)

Specified by:

typeCheckLocal in class Expression