/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.bnf;
import java.util.HashMap;
/**
* Represents a non-standard syntax.
*/
public class RuleExtension implements Rule {
private final Rule rule;
private final boolean compatibility;
private boolean mapSet;
public RuleExtension(Rule rule, boolean compatibility) {
this.rule = rule;
this.compatibility = compatibility;
}
@Override
public void accept(BnfVisitor visitor) {
visitor.visitRuleExtension(rule, compatibility);
}
@Override
public void setLinks(HashMap<String, RuleHead> ruleMap) {
if (!mapSet) {
rule.setLinks(ruleMap);
mapSet = true;
}
}
@Override
public boolean autoComplete(Sentence sentence) {
sentence.stopIfRequired();
rule.autoComplete(sentence);
return true;
}
@Override
public String toString() {
return (compatibility ? "@c@ " : "@h2@ ") + rule.toString();
}
}