Class Closure

basex-core/src/main/java/org/basex/query/func/Closure.java:34–533

Inline function. @author BaseX Team, BSD License @author Leo Woerteler

 * @author Leo Woerteler
 */
public final class Closure extends Single implements Scope, XQFunctionExpr {
  /** Function name, {@code null} if not specified. */
  private final QNm name;
  /** Parameters. */
  private final Var[] params;
  /** Value type, {@code null} if not specified. */
  private final SeqType declType;
  /** Annotations. */
  private AnnList anns;
  /** Updating flag. */
  private boolean updating;

  /** Map with requested function properties. */
  private final EnumMap<Flag, Boolean> map = new EnumMap<>(Flag.class);
  /** Compilation flag. */
  private boolean compiled;
  /** Indicates if code is currently being compiled or evaluated. */
  private boolean dontEnter;

  /** Local variables in the scope of this function. */
  private final VarScope vs;
  /** Non-local variable bindings. */
  private final Map<Var, Expr> global;

  /**
   * Constructor.
   * @param info input info (can be {@code null})
   * @param expr function body
   * @param params parameters
   * @param anns annotations
   * @param vs scope
   * @param global bindings for non-local variables
   */
  public Closure(final InputInfo info, final Expr expr, final Params params, final AnnList anns,
      final VarScope vs, final Map<Var, Expr> global) {
    this(info, expr, params.vars(), anns, vs, global, params.seqType(), null);
  }

  /**
   * Package-private constructor allowing a name.
   * @param info input info (can be {@code null})
   * @param expr function expression
   * @param params parameters
   * @param anns annotations
   * @param vs variable scope
   * @param global bindings for non-local variables (can be {@code null})
   * @param declType declared type (can be {@code null})
   * @param name function name (can be {@code null})
   */
  Closure(final InputInfo info, final Expr expr, final Var[] params, final AnnList anns,
      final VarScope vs, final Map<Var, Expr> global, final SeqType declType, final QNm name) {
    super(info, expr, Types.FUNCTION_O);
    this.params = params;
    this.anns = anns;
    this.vs = vs;
    this.global = global == null ? new HashMap<>() : new HashMap<>(global);
    this.declType = declType == null || declType.eq(Types.ITEM_ZM) ? null : declType;
    this.name = name;