Copyright (c) 2008, http://www.snakeyaml.org
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.
/**
 * Copyright (c) 2008, http://www.snakeyaml.org
 *
 * 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 org.yaml.snakeyaml;

public class LoaderOptions {

    private boolean allowDuplicateKeys = true;
    private boolean wrappedToRootException = false;
    private int maxAliasesForCollections = 50; //to prevent YAML at https://en.wikipedia.org/wiki/Billion_laughs_attack
    private boolean allowRecursiveKeys = false;

    public boolean isAllowDuplicateKeys() {
        return allowDuplicateKeys;
    }

    
Allow/Reject duplicate map keys in the YAML file.
Default is to allow.
YAML 1.1 is slightly vague around duplicate entries in the YAML file. The
best reference is 
3.2.1.3. Nodes Comparison where it hints that a duplicate map key is
an error.
For future reference, YAML spec 1.2 is clear. The keys MUST be unique.
1.3. Relation
to JSON
Params:
allowDuplicateKeys – false to reject duplicate mapping keys/**
     * Allow/Reject duplicate map keys in the YAML file.
     *
     * Default is to allow.
     *
     * YAML 1.1 is slightly vague around duplicate entries in the YAML file. The
     * best reference is <a href="http://www.yaml.org/spec/1.1/#id862121">
     * 3.2.1.3. Nodes Comparison</a> where it hints that a duplicate map key is
     * an error.
     *
     * For future reference, YAML spec 1.2 is clear. The keys MUST be unique.
     * <a href="http://www.yaml.org/spec/1.2/spec.html#id2759572">1.3. Relation
     * to JSON</a>
     * @param allowDuplicateKeys false to reject duplicate mapping keys
     */
    public void setAllowDuplicateKeys(boolean allowDuplicateKeys) {
        this.allowDuplicateKeys = allowDuplicateKeys;
    }

    public boolean isWrappedToRootException() {
        return wrappedToRootException;
    }

    
Wrap runtime exception to YAMLException during parsing or leave them as they are
Default is to leave original exceptions
Params:
wrappedToRootException – - true to convert runtime exception to YAMLException/**
     * Wrap runtime exception to YAMLException during parsing or leave them as they are
     *
     * Default is to leave original exceptions
     *
     * @param wrappedToRootException - true to convert runtime exception to YAMLException
     */
    public void setWrappedToRootException(boolean wrappedToRootException) {
        this.wrappedToRootException = wrappedToRootException;
    }

    public int getMaxAliasesForCollections() {
        return maxAliasesForCollections;
    }

    
Restrict the amount of aliases for collections (sequences and mappings) to avoid https://en.wikipedia.org/wiki/Billion_laughs_attack
Params:
maxAliasesForCollections – set max allowed value (50 by default)/**
     * Restrict the amount of aliases for collections (sequences and mappings) to avoid https://en.wikipedia.org/wiki/Billion_laughs_attack
     * @param maxAliasesForCollections set max allowed value (50 by default)
     */
    public void setMaxAliasesForCollections(int maxAliasesForCollections) {
    	this.maxAliasesForCollections = maxAliasesForCollections;
    }

    
Allow recursive keys for mappings. By default it is not allowed.
This setting only prevents the case when the key is the value. If the key is only a part of the value
(the value is a sequence or a mapping) then this case is not recognized and always allowed.
Params:
allowRecursiveKeys – - false to disable recursive keys/**
     * Allow recursive keys for mappings. By default it is not allowed.
     * This setting only prevents the case when the key is the value. If the key is only a part of the value
     * (the value is a sequence or a mapping) then this case is not recognized and always allowed.
     * @param allowRecursiveKeys - false to disable recursive keys
     */
    public void setAllowRecursiveKeys(boolean allowRecursiveKeys) {
    	this.allowRecursiveKeys = allowRecursiveKeys;
    }

    public boolean getAllowRecursiveKeys() {
        return allowRecursiveKeys;
    }
}