net.sandius.rembulan.parser.analysis.VarMapping Maven / Gradle / Ivy
The newest version!
/*
* 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.analysis;
import net.sandius.rembulan.util.Check;
import java.util.Collections;
import java.util.List;
public class VarMapping {
private final List vars;
public VarMapping(List vars) {
Check.notNull(vars);
if (vars.isEmpty()) {
throw new IllegalArgumentException("variable list is empty");
}
this.vars = vars;
}
public VarMapping(Variable v) {
this(Collections.singletonList(Check.notNull(v)));
}
public List vars() {
return vars;
}
public Variable get(int idx) {
return vars.get(idx);
}
public Variable get() {
return get(0);
}
}