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212 changes: 209 additions & 3 deletions COPYING
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Expand Up @@ -5,18 +5,18 @@ this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
SOFTWARE.

------

Expand Down Expand Up @@ -47,3 +47,209 @@ 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.

------

Code in Cats is derived in part from the Scala standard library. The Scala license follows:

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction,
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To apply the Apache License to your work, attach the following
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Copyright [yyyy] [name of copyright owner]

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

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Unless required by applicable law or agreed to in writing, software
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See the License for the specific language governing permissions and
limitations under the License.
30 changes: 25 additions & 5 deletions core/src/main/scala/cats/data/Chain.scala
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Expand Up @@ -19,6 +19,26 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

/* This file is derived in part from https://github.com/scala/scala/blob/v2.13.8/src/library/scala/collection/Iterable.scala
* Modified by Typelevel for redistribution in Cats.
*
* Copyright EPFL and Lightbend, Inc.
* Scala
* Copyright (c) 2002-2022 EPFL
* Copyright (c) 2011-2022 Lightbend, Inc.
*
* Scala includes software developed at
* LAMP/EPFL (https://lamp.epfl.ch/) and
* Lightbend, Inc. (https://www.lightbend.com/).
*
* Licensed under the Apache License, Version 2.0 (the "License").
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package cats
package data

Expand Down Expand Up @@ -659,18 +679,18 @@ sealed abstract class Chain[+A] extends ChainCompat[A] {

/**
* Compares the length of this chain to a test value.
*
*
* The method does not call `length` directly; its running time
* is `O(length min len)` instead of `O(length)`.
*
*
* @param len the test value that gets compared with the length.
* @return a negative value if `this.length < len`,
* zero if `this.length == len` or
* a positive value if `this.length > len`.
* @note an adapted version of
[[https://github.com/scala/scala/blob/v2.13.8/src/library/scala/collection/Iterable.scala#L272-L288 Iterable#sizeCompare]]
from Scala Library v2.13.8 is used in a part of the implementation.
*
*
* {{{
* scala> import cats.data.Chain
* scala> val chain = Chain(1, 2, 3)
Expand Down Expand Up @@ -764,7 +784,7 @@ sealed abstract class Chain[+A] extends ChainCompat[A] {

/**
* Remove duplicates. Duplicates are checked using `Order[_]` instance.
*
*
* Example:
* {{{
* scala> import cats.data.Chain
Expand Down Expand Up @@ -793,7 +813,7 @@ sealed abstract class Chain[+A] extends ChainCompat[A] {

/**
* Remove duplicates by a predicate. Duplicates are checked using `Order[_]` instance.
*
*
* Example:
* {{{
* scala> import cats.data.Chain
Expand Down
20 changes: 20 additions & 0 deletions kernel/src/main/scala-2.12/cats/kernel/compat/HashCompat.scala
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Expand Up @@ -23,6 +23,26 @@ package cats
package kernel
package compat

/* This file is derived in part from https://github.com/scala/scala/blob/v2.12.2/src/library/scala/util/hashing/MurmurHash3.scala
* Modified by Typelevel for redistribution in Cats.
*
* Copyright EPFL and Lightbend, Inc.
* Scala
* Copyright (c) 2002-2022 EPFL
* Copyright (c) 2011-2022 Lightbend, Inc.
*
* Scala includes software developed at
* LAMP/EPFL (https://lamp.epfl.ch/) and
* Lightbend, Inc. (https://www.lightbend.com/).
*
* Licensed under the Apache License, Version 2.0 (the "License").
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

private[kernel] class HashCompat {
// Adapted from scala.util.hashing.MurmurHash#productHash.
private[kernel] def product1HashWithPrefix(_1Hash: Int, prefix: String): Int = {
Expand Down
20 changes: 20 additions & 0 deletions kernel/src/main/scala-2.13+/cats/kernel/compat/HashCompat.scala
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Expand Up @@ -23,6 +23,26 @@ package cats
package kernel
package compat

/* This file is derived in part from https://github.com/scala/scala/blob/v2.13.0-RC1/src/library/scala/util/hashing/MurmurHash3.scala
* Modified by Typelevel for redistribution in Cats.
*
* Copyright EPFL and Lightbend, Inc.
* Scala
* Copyright (c) 2002-2022 EPFL
* Copyright (c) 2011-2022 Lightbend, Inc.
*
* Scala includes software developed at
* LAMP/EPFL (https://lamp.epfl.ch/) and
* Lightbend, Inc. (https://www.lightbend.com/).
*
* Licensed under the Apache License, Version 2.0 (the "License").
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

private[kernel] class HashCompat {
// Adapted from scala.util.hashing.MurmurHash#productHash.
private[kernel] def product1HashWithPrefix(_1Hash: Int, prefix: String): Int = {
Expand Down
20 changes: 20 additions & 0 deletions kernel/src/main/scala/cats/kernel/instances/MapInstances.scala
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Expand Up @@ -19,6 +19,26 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

/* This file is derived in part from https://github.com/scala/scala/blob/v2.12.2/src/library/scala/util/hashing/MurmurHash3.scala
* Modified by Typelevel for redistribution in Cats.
*
* Copyright EPFL and Lightbend, Inc.
* Scala
* Copyright (c) 2002-2022 EPFL
* Copyright (c) 2011-2022 Lightbend, Inc.
*
* Scala includes software developed at
* LAMP/EPFL (https://lamp.epfl.ch/) and
* Lightbend, Inc. (https://www.lightbend.com/).
*
* Licensed under the Apache License, Version 2.0 (the "License").
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package cats.kernel
package instances

Expand Down
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