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/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#import "NSEnumerator+GRXUtil.h"

#import "private/GRXNSBlockEnumerator.h"
#import "private/GRXNSFastEnumerator.h"
#import "private/GRXNSScalarEnumerator.h"

@implementation NSEnumerator (GRXUtil)

+ (NSEnumerator *)grx_enumeratorWithContainer:(id<NSFastEnumeration>)container {
  // TODO(jcanizales): Consider checking if container responds to objectEnumerator and return that?
  return [[GRXNSFastEnumerator alloc] initWithContainer:container];
}

+ (NSEnumerator *)grx_enumeratorWithSingleValue:(id)value {
  return [[GRXNSScalarEnumerator alloc] initWithValue:value];
}

+ (NSEnumerator *)grx_enumeratorWithValueSupplier:(id (^)())block {
  return [[GRXNSBlockEnumerator alloc] initWithValueSupplier:block];
}
@end