Package software.amazon.smithy.rulesengine.language.evaluation.type

Class OptionalType

java.lang.Object
software.amazon.smithy.rulesengine.language.evaluation.type.OptionalType
All Implemented Interfaces:
Type
public final class OptionalType extends Object
The "optional" type, a container for a type that may or may not be present.

  • Method Details

    • isA

      public boolean isA(Type type)
      Description copied from interface: Type
      Returns true if this type matches the target type.
      Parameters:
      type - the target type to match.
      Returns:
      true if the types match, false otherwise.

    • provenTruthy

      public Type provenTruthy()
      Description copied from interface: Type
      When used in the context of a condition, the condition can only match if the value was truthful. This means that a certain expression can be a different type, for example, OptionalType<T> will become T.
      Returns:
      The type, given that it has been proven truthy

    • inner

      public Type inner()
      Gets the optional's contained value.
      Returns:
      the optional's value.

    • expectStringType

      public StringType expectStringType() throws InnerParseError
      Throws:
      InnerParseError

    • expectBooleanType

      public BooleanType expectBooleanType() throws InnerParseError
      Throws:
      InnerParseError

    • expectOptionalType

      public OptionalType expectOptionalType()

    • equals

      public boolean equals(Object obj)

    • hashCode

      public int hashCode()

    • toString

      public String toString()