/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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 com.asakusafw.dmdl.model;
import java.util.Objects;
import com.asakusafw.dmdl.Region;
/**
* Represents a collection type of property.
* @since 0.9.2
*/
public class AstCollectionType extends AbstractAstNode implements AstType {
private final Region region;
/**
* The kind of collection.
*/
public final CollectionKind kind;
/**
* The element type.
*/
public final AstType elementType;
/**
* Creates a new instance.
* @param region the region of this node on the enclosing script, or {@code null} if unknown
* @param kind the collection kind
* @param elementType the element type
*/
public AstCollectionType(Region region, CollectionKind kind, AstType elementType) {
this.region = region;
this.kind = kind;
this.elementType = elementType;
}
@Override
public Region getRegion() {
return region;
}
@Override
public <C, R> R accept(C context, Visitor<C, R> visitor) {
Objects.requireNonNull(visitor);
R result = visitor.visitCollectionType(context, this);
return result;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + Objects.hashCode(kind);
result = prime * result + Objects.hashCode(elementType);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
AstCollectionType other = (AstCollectionType) obj;
return Objects.equals(kind, other.kind)
&& Objects.equals(elementType, other.elementType);
}
@Override
public String toString() {
switch (kind) {
case LIST:
return String.format("{%s}", elementType); //$NON-NLS-1$
case MAP:
return String.format("{:%s}", elementType); //$NON-NLS-1$
default:
return String.format("UnknwonCollection(kind=%s, element=%s)", kind, elementType); //$NON-NLS-1$
}
}
/**
* Represents a kind of collection.
* @since 0.9.2
*/
public enum CollectionKind {
/**
* List type.
*/
LIST,
/**
* Map type.
*/
MAP,
}
}