diff options
Diffstat (limited to 'src/library/scala/collection/immutable/Map.scala')
| -rw-r--r-- | src/library/scala/collection/immutable/Map.scala | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/library/scala/collection/immutable/Map.scala b/src/library/scala/collection/immutable/Map.scala index 2c5b444c70..6f135cd35f 100644 --- a/src/library/scala/collection/immutable/Map.scala +++ b/src/library/scala/collection/immutable/Map.scala @@ -94,6 +94,8 @@ object Map extends ImmutableMapFactory[Map] { private object EmptyMap extends AbstractMap[Any, Nothing] with Map[Any, Nothing] with Serializable { override def size: Int = 0 + override def apply(key: Any) = throw new NoSuchElementException("key not found: " + key) + override def contains(key: Any) = false def get(key: Any): Option[Nothing] = None def iterator: Iterator[(Any, Nothing)] = Iterator.empty override def updated [B1] (key: Any, value: B1): Map[Any, B1] = new Map1(key, value) @@ -103,6 +105,8 @@ object Map extends ImmutableMapFactory[Map] { class Map1[A, +B](key1: A, value1: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 1 + override def apply(key: A) = if (key == key1) value1 else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = key == key1 def get(key: A): Option[B] = if (key == key1) Some(value1) else None def iterator = Iterator((key1, value1)) @@ -119,6 +123,11 @@ object Map extends ImmutableMapFactory[Map] { class Map2[A, +B](key1: A, value1: B, key2: A, value2: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 2 + override def apply(key: A) = + if (key == key1) value1 + else if (key == key2) value2 + else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = (key == key1) || (key == key2) def get(key: A): Option[B] = if (key == key1) Some(value1) else if (key == key2) Some(value2) @@ -140,6 +149,12 @@ object Map extends ImmutableMapFactory[Map] { class Map3[A, +B](key1: A, value1: B, key2: A, value2: B, key3: A, value3: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 3 + override def apply(key: A) = + if (key == key1) value1 + else if (key == key2) value2 + else if (key == key3) value3 + else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = (key == key1) || (key == key2) || (key == key3) def get(key: A): Option[B] = if (key == key1) Some(value1) else if (key == key2) Some(value2) @@ -164,6 +179,13 @@ object Map extends ImmutableMapFactory[Map] { class Map4[A, +B](key1: A, value1: B, key2: A, value2: B, key3: A, value3: B, key4: A, value4: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 4 + override def apply(key: A) = + if (key == key1) value1 + else if (key == key2) value2 + else if (key == key3) value3 + else if (key == key4) value4 + else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = (key == key1) || (key == key2) || (key == key3) || (key == key4) def get(key: A): Option[B] = if (key == key1) Some(value1) else if (key == key2) Some(value2) |