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

Class IsValidHostLabel

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.IsValidHostLabel

All Implemented Interfaces:

FromSourceLocation, ToNode, TypeCheck, ToCondition, ToExpression

public final class IsValidHostLabel
extends LibraryFunction

A rule-engine function for checking whether a string is a valid DNS host label.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	IsValidHostLabel.Definition	A FunctionDefinition for the IsValidHostLabel 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
<T> T	accept(ExpressionVisitor<T> visitor)	Invoke the ExpressionVisitor functions for this expression.
static IsValidHostLabel.Definition	getDefinition()	Gets the FunctionDefinition implementation.
static boolean	isValidHostLabel(String hostLabel, boolean allowDots)	Check if a hostLabel is valid.
static IsValidHostLabel	ofExpressions(ToExpression arg1, boolean arg2)	Creates a IsValidHostLabel function from the given expressions.
static IsValidHostLabel	ofExpressions(ToExpression arg1, ToExpression arg2)	Creates a IsValidHostLabel function from the given expressions.

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

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

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 IsValidHostLabel.Definition getDefinition()

Gets the FunctionDefinition implementation.

Returns:

the function definition.

ofExpressions

public static IsValidHostLabel ofExpressions(ToExpression arg1,
 ToExpression arg2)

Creates a IsValidHostLabel function from the given expressions.

Parameters:

arg1 - the value to check.

arg2 - whether to allow subdomains.

Returns:

The resulting IsValidHostLabel function.

ofExpressions

public static IsValidHostLabel ofExpressions(ToExpression arg1,
 boolean arg2)

Creates a IsValidHostLabel function from the given expressions.

Parameters:

arg1 - the value to check.

arg2 - whether to allow subdomains.

Returns:

The resulting IsValidHostLabel function.

accept

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

Description copied from class: Expression

Invoke the ExpressionVisitor functions for this expression.

Specified by:

accept in class Expression

Type Parameters:

T - the visitor return type.

Parameters:

visitor - the visitor to be invoked.

Returns:

the return value of the visitor.

isValidHostLabel

public static boolean isValidHostLabel(String hostLabel,
 boolean allowDots)

Check if a hostLabel is valid.

Parameters:

hostLabel - Host label to check.

allowDots - Set to true to allow dots as separators.

Returns:

true if the label is valid.