/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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
*
* 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.elasticsearch.painless;
import org.apache.lucene.util.IOUtils;
import org.objectweb.asm.util.Textifier;
import java.io.PrintWriter;
import java.io.StringWriter;
/** quick and dirty tools for debugging */
final class Debugger {
/** compiles source to bytecode, and returns debugging output */
static String toString(final String source) {
return toString(GenericElasticsearchScript.class, source, new CompilerSettings());
}
/** compiles to bytecode, and returns debugging output */
static String toString(Class<?> iface, String source, CompilerSettings settings) {
StringWriter output = new StringWriter();
PrintWriter outputWriter = new PrintWriter(output);
Textifier textifier = new Textifier();
try {
Compiler.compile(iface, "<debugging>", source, settings, textifier);
} catch (Exception e) {
textifier.print(outputWriter);
e.addSuppressed(new Exception("current bytecode: \n" + output));
IOUtils.reThrowUnchecked(e);
throw new AssertionError();
}
textifier.print(outputWriter);
return output.toString();
}
}