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BaseConstructor.scala
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BaseConstructor.scala
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/*
* Copyright 2015 Creative Scala
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 doodle.algebra
/** Base module for constructors
*
* The intention is to assist with type inference for constructors by defining
* constructors that are parameterized by the Algebra and Drawing types, and
* instantiating those types within each backend.
*
* Algebras that define constructors should also define a constructor mixin.
* See e.g. Shape for an example.
*/
trait BaseConstructor {
type Algebra <: doodle.algebra.Algebra
type Drawing[A]
type Picture[A] = doodle.algebra.Picture[Algebra, A]
}