package com.thaiopensource.relaxng.output.xsd.basic;

import com.thaiopensource.xml.util.Name;
import com.thaiopensource.relaxng.edit.SourceLocation;
import com.thaiopensource.util.Equal;

public class Attribute extends SingleAttributeUse implements Structure {
  private final Name name;
  private final SimpleType type;

   /**
   * type may be null, indicating any type
   */

   public Attribute(SourceLocation location, Annotation annotation, Name name, SimpleType type) {
    super(location, annotation);
    this.name = name;
    this.type = type;
  }

  public Name getName() {
    return name;
  }

  public SimpleType getType() {
    return type;
  }

  public <T> T accept(AttributeUseVisitor<T> visitor) {
    return visitor.visitAttribute(this);
  }

  public <T> T accept(StructureVisitor<T> visitor) {
    return visitor.visitAttribute(this);
  }

  public boolean equals(Object obj) {
    if (!super.equals(obj))
      return false;
    Attribute other = (Attribute)obj;
    return Equal.equal(this.type, other.type) && this.name.equals(other.name);
  }

  public int hashCode() {
    int hc = super.hashCode() ^ name.hashCode();
    if (type != null)
      hc ^= type.hashCode();
    return hc;
  }

  public boolean isOptional() {
    return false;
  }
}
