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/*
* Copyright 2016 Miroslav Janíček
*
* 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 net.sandius.rembulan.parser.ast;
import net.sandius.rembulan.util.Check;
import java.util.List;
import java.util.Objects;
public class TableConstructorExpr extends Expr {
private final List fields;
public TableConstructorExpr(Attributes attr, List fields) {
super(attr);
this.fields = Check.notNull(fields);
}
public static class FieldInitialiser {
private final Expr keyExpr; // may be null
private final Expr valueExpr;
public FieldInitialiser(Expr keyExpr, Expr valueExpr) {
this.keyExpr = keyExpr;
this.valueExpr = Check.notNull(valueExpr);
}
public Expr key() {
return keyExpr;
}
public Expr value() {
return valueExpr;
}
public FieldInitialiser update(Expr keyExpr, Expr valueExpr) {
if (Objects.equals(this.keyExpr, keyExpr) && this.valueExpr.equals(valueExpr)) {
return this;
}
else {
return new FieldInitialiser(keyExpr, valueExpr);
}
}
}
public List fields() {
return fields;
}
public TableConstructorExpr update(List fields) {
if (this.fields.equals(fields)) {
return this;
}
else {
return new TableConstructorExpr(attributes(), fields);
}
}
@Override
public Expr accept(Transformer tf) {
return tf.transform(this);
}
}