/*
* 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
*
* 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.apache.jasper.compiler;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import javax.tools.Diagnostic;
import javax.tools.DiagnosticCollector;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;
import org.apache.jasper.JasperException;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
/**
* Main JSP compiler class. This class uses the Java Compiler API for compiling.
*/
public class JavaCompiler extends Compiler {
private final Log log = LogFactory.getLog(JavaCompiler.class); // must not be static
@Override
protected void generateClass(Map<String,SmapStratum> smaps) throws JasperException, IOException {
long t1 = 0;
if (log.isDebugEnabled()) {
t1 = System.currentTimeMillis();
}
javax.tools.JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null,
Charset.forName(ctxt.getOptions().getJavaEncoding()));
Iterable<? extends JavaFileObject> compilationUnits =
fileManager.getJavaFileObjectsFromFiles(List.of(new File(ctxt.getServletJavaFileName())));
// Perform Java compilation using the appropriate options
List<String> compilerOptions = List.of("-classpath", ctxt.getClassPath(), "-source",
ctxt.getOptions().getCompilerSourceVM(), "-target", ctxt.getOptions().getCompilerTargetVM());
Boolean result =
compiler.getTask(null, fileManager, diagnostics, compilerOptions, null, compilationUnits).call();
List<JavacErrorDetail> problemList = new ArrayList<>();
if (!result.booleanValue()) {
for (Diagnostic<? extends JavaFileObject> diagnostic : diagnostics.getDiagnostics()) {
if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
try {
problemList.add(ErrorDispatcher.createJavacError(diagnostic.getSource().getName(), pageNodes,
new StringBuilder(diagnostic.getMessage(Locale.getDefault())),
(int) diagnostic.getLineNumber(), ctxt));
} catch (JasperException e) {
log.error(Localizer.getMessage("jsp.error.compilation.jdtProblemError"), e);
}
}
}
}
if (!ctxt.keepGenerated()) {
File javaFile = new File(ctxt.getServletJavaFileName());
if (!javaFile.delete()) {
throw new JasperException(Localizer.getMessage("jsp.warning.compiler.javafile.delete.fail", javaFile));
}
}
if (!problemList.isEmpty()) {
JavacErrorDetail[] jeds = problemList.toArray(new JavacErrorDetail[0]);
errDispatcher.javacError(jeds);
}
if (log.isDebugEnabled()) {
long t2 = System.currentTimeMillis();
log.debug(Localizer.getMessage("jsp.compiled", ctxt.getServletJavaFileName(), Long.valueOf(t2 - t1)));
}
if (ctxt.isPrototypeMode()) {
return;
}
// JSR45 Support
if (!options.isSmapSuppressed()) {
SmapUtil.installSmap(smaps);
}
}
}