Package software.amazon.smithy.rulesengine.language.syntax.expressions.functions

Class IsSet

java.lang.Object

software.amazon.smithy.rulesengine.language.syntax.SyntaxElement

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

software.amazon.smithy.rulesengine.language.syntax.expressions.functions.LibraryFunction

software.amazon.smithy.rulesengine.language.syntax.expressions.functions.IsSet

All Implemented Interfaces:

FromSourceLocation, ToNode, TypeCheck, ToCondition, ToExpression

public final class IsSet
extends LibraryFunction

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

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	IsSet.Definition	A FunctionDefinition for the IsSet function.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ID

Fields inherited from class software.amazon.smithy.rulesengine.language.syntax.expressions.functions.LibraryFunction

definition, functionNode

Method Summary

Modifier and Type	Method	Description
<R> R	accept(ExpressionVisitor<R> visitor)	Invoke the ExpressionVisitor functions for this expression.
static IsSet.Definition	getDefinition()	Gets the FunctionDefinition implementation.
static IsSet	ofExpressions(ToExpression arg1)	Creates a IsSet function from the given expressions.
protected Type	typeCheckLocal(Scope<Type> scope)

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.expressions.functions.LibraryFunction

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

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

fromNode, getLiteral, getReference, of, of, of, parseShortform, toConditionBuilder, toExpression, type, typeCheck

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.SyntaxElement

booleanEqual, getAttr, getAttr, isSet, isValidHostLabel, not, parseUrl, stringEqual, substring, template

Methods inherited from class java.lang.Object

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

Methods inherited from interface software.amazon.smithy.rulesengine.language.syntax.ToCondition

toCondition, toCondition

Field Details

ID

public static final String ID

See Also:

• Constant Field Values

Method Details

getDefinition

public static IsSet.Definition getDefinition()

Gets the FunctionDefinition implementation.

Returns:

the function definition.

ofExpressions

public static IsSet ofExpressions(ToExpression arg1)

Creates a IsSet function from the given expressions.

Parameters:

arg1 - the expression to negate.

Returns:

The resulting IsSet function.

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.

typeCheckLocal

protected Type typeCheckLocal(Scope<Type> scope)

Overrides:

typeCheckLocal in class LibraryFunction