content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *     https://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 org.apache.avro.compiler.idl;
  
  import org.apache.avro.Schema;
  import org.apache.avro.compiler.schema.SchemaVisitor;
  import org.apache.avro.compiler.schema.SchemaVisitorAction;
  
  /**
   * This visitor checks if the current schema is fully resolved.
   */
  public final class IsResolvedSchemaVisitor implements SchemaVisitor<Boolean> {
    boolean hasUnresolvedParts;
  
    IsResolvedSchemaVisitor() {
      hasUnresolvedParts = false;
    }
  
    @Override
    public SchemaVisitorAction visitTerminal(Schema terminal) {
      hasUnresolvedParts = SchemaResolver.isUnresolvedSchema(terminal);
      return hasUnresolvedParts ? SchemaVisitorAction.TERMINATE : SchemaVisitorAction.CONTINUE;
    }
  
    @Override
    public SchemaVisitorAction visitNonTerminal(Schema nonTerminal) {
      hasUnresolvedParts = SchemaResolver.isUnresolvedSchema(nonTerminal);
      if (hasUnresolvedParts) {
        return SchemaVisitorAction.TERMINATE;
      }
      if (nonTerminal.getType() == Schema.Type.RECORD && !nonTerminal.hasFields()) {
        // We're still initializing the type...
        return SchemaVisitorAction.SKIP_SUBTREE;
      }
      return SchemaVisitorAction.CONTINUE;
    }
  
    @Override
    public SchemaVisitorAction afterVisitNonTerminal(Schema nonTerminal) {
      return SchemaVisitorAction.CONTINUE;
    }
  
    @Override
    public Boolean get() {
      return !hasUnresolvedParts;
    }
  }
  