Package org.apache.groovy.ast.tools

Class TypeUseUtils

java.lang.Object
org.apache.groovy.ast.tools.TypeUseUtils
public final class TypeUseUtils extends Object
Classification of a ClassNode as a type use (JLS 4.5, 4.7, 4.8). Distinct from a generic class declaration, whose ClassNode.getGenericsTypes() are the formals.
Since:
6.0.0

  • Method Details

    • isParameterizedTypeUsage

      public static boolean isParameterizedTypeUsage(ClassNode type)
      True when type is a parameterized usage (Cell<String>), as opposed to the generic type name (Cell) or the class declaration node (whose ClassNode.getGenericsTypes() are the formals).

    • isParameterizedTypeUsageIncludingEnclosing

      public static boolean isParameterizedTypeUsageIncludingEnclosing(ClassNode type)
      True when type or any enclosing rare type is a parameterized usage. Used for class literals (JLS 15.8.2): Outer<String>.Inner.class. Declaration formals on Map must not make Map.Entry a class-literal error.

    • isParameterizedEnclosingType

      public static boolean isParameterizedEnclosingType(ClassNode type)
      True when type carries type arguments, including wildcards (Outer<?>). Raw names (Outer) are not parameterized. Unlike isParameterizedTypeUsage(ClassNode), this does not require a redirect node: an enclosing type on a nested use may still be the parser's unresolved node.

    • isRawGenericType

      public static boolean isRawGenericType(ClassNode type)
      True when type is a raw use of a generic declaration (Outer for class Outer<T>).

    • isReifiable

      public static boolean isReifiable(ClassNode type)
      JLS 4.7: types available in full at run time. Used for array creation (JLS 15.10.1) and instanceof (JLS 15.20.2).

    • isStaticMemberType

      public static boolean isStaticMemberType(ClassNode type)
      Nested interfaces and enums are implicitly static; otherwise the ACC_STATIC bit on the declaration is authoritative.

    • hasWildcardTypeArgument

      public static boolean hasWildcardTypeArgument(ClassNode type)
      True when a type argument of type or an enclosing rare type is a wildcard.

    • describeTypeUse

      public static String describeTypeUse(ClassNode type)
      Source-like display of a type use, including rare enclosing arguments (Outer<String>.Inner) and array brackets.