com.networknt.schema.regex.GraalJSRegularExpressionContext Maven / Gradle / Ivy
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/*
* Copyright (c) 2024 the original author or authors.
*
* 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 com.networknt.schema.regex;
import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Value;
/**
* GraalJSRegularExpressionContext.
*/
public class GraalJSRegularExpressionContext {
private static final String SOURCE = "pattern => {\n"
+ " const regex = new RegExp(pattern, 'u');\n"
+ " return text => text.match(regex)\n"
+ "};";
private final Context context;
private final Value regExpBuilder;
/**
* Constructor.
*
* It is the caller's responsibility to release the context when it is no longer
* required.
*
* @param context the context
*/
public GraalJSRegularExpressionContext(Context context) {
this.context = context;
synchronized(this.context) {
this.regExpBuilder = this.context.eval("js", SOURCE);
}
}
/**
* Operations must synchronize on the {@link Context} as only a single thread
* can access the {@link Context} and {@link #getRegExpBuilder()} at one time.
*
* @return the context
*/
public Context getContext() {
return context;
}
/**
* Gets the RegExp builder.
*
* @return the regexp builder
*/
public Value getRegExpBuilder() {
return regExpBuilder;
}
}