in java/org/apache/jasper/compiler/JDTCompiler.java [69:542]
protected void generateClass(Map<String,SmapStratum> smaps)
throws FileNotFoundException, JasperException, Exception {
long t1 = 0;
if (log.isDebugEnabled()) {
t1 = System.currentTimeMillis();
}
final String sourceFile = ctxt.getServletJavaFileName();
final String outputDir = ctxt.getOptions().getScratchDir().getAbsolutePath();
String packageName = ctxt.getServletPackageName();
final String targetClassName =
((!packageName.isEmpty()) ? (packageName + ".") : "") + ctxt.getServletClassName();
final ClassLoader classLoader = ctxt.getJspLoader();
String[] fileNames = new String[] { sourceFile };
String[] classNames = new String[] { targetClassName };
final List<JavacErrorDetail> problemList = new ArrayList<>();
class CompilationUnit implements ICompilationUnit {
private final String className;
private final String sourceFile;
CompilationUnit(String sourceFile, String className) {
this.className = className;
this.sourceFile = sourceFile;
}
@Override
public char[] getFileName() {
return sourceFile.toCharArray();
}
@Override
public char[] getContents() {
char[] result = null;
try (FileInputStream is = new FileInputStream(sourceFile);
InputStreamReader isr = new InputStreamReader(is, ctxt.getOptions().getJavaEncoding());
Reader reader = new BufferedReader(isr)) {
char[] chars = new char[8192];
StringBuilder buf = new StringBuilder();
int count;
while ((count = reader.read(chars, 0, chars.length)) > 0) {
buf.append(chars, 0, count);
}
result = new char[buf.length()];
buf.getChars(0, result.length, result, 0);
} catch (IOException e) {
log.error(Localizer.getMessage("jsp.error.compilation.source", sourceFile), e);
}
return result;
}
@Override
public char[] getMainTypeName() {
int dot = className.lastIndexOf('.');
if (dot > 0) {
return className.substring(dot + 1).toCharArray();
}
return className.toCharArray();
}
@Override
public char[][] getPackageName() {
StringTokenizer izer = new StringTokenizer(className, ".");
char[][] result = new char[izer.countTokens() - 1][];
for (int i = 0; i < result.length; i++) {
String tok = izer.nextToken();
result[i] = tok.toCharArray();
}
return result;
}
@Override
public boolean ignoreOptionalProblems() {
return false;
}
@Override
public ModuleBinding module(LookupEnvironment environment) {
return environment.getModule(ModuleBinding.UNNAMED);
}
@Override
public char[] getModuleName() {
return ModuleBinding.UNNAMED;
}
}
final INameEnvironment env = new INameEnvironment() {
@Override
public NameEnvironmentAnswer findType(char[][] compoundTypeName) {
StringBuilder result = new StringBuilder();
for (int i = 0; i < compoundTypeName.length; i++) {
if (i > 0) {
result.append('.');
}
result.append(compoundTypeName[i]);
}
return findType(result.toString());
}
@Override
public NameEnvironmentAnswer findType(char[] typeName, char[][] packageName) {
StringBuilder result = new StringBuilder();
int i = 0;
for (; i < packageName.length; i++) {
if (i > 0) {
result.append('.');
}
result.append(packageName[i]);
}
if (i > 0) {
result.append('.');
}
result.append(typeName);
return findType(result.toString());
}
private NameEnvironmentAnswer findType(String className) {
if (className.equals(targetClassName)) {
ICompilationUnit compilationUnit = new CompilationUnit(sourceFile, className);
return new NameEnvironmentAnswer(compilationUnit, null);
}
String resourceName = className.replace('.', '/') + ".class";
try (InputStream is = classLoader.getResourceAsStream(resourceName)) {
if (is != null) {
byte[] classBytes;
byte[] buf = new byte[8192];
ByteArrayOutputStream baos = new ByteArrayOutputStream(buf.length);
int count;
while ((count = is.read(buf, 0, buf.length)) > 0) {
baos.write(buf, 0, count);
}
baos.flush();
classBytes = baos.toByteArray();
char[] fileName = className.toCharArray();
ClassFileReader classFileReader = new ClassFileReader(classBytes, fileName, true);
return new NameEnvironmentAnswer(classFileReader, null);
}
} catch (IOException | ClassFormatException exc) {
log.error(Localizer.getMessage("jsp.error.compilation.dependent", className), exc);
}
return null;
}
private boolean isPackage(String result) {
if (result.equals(targetClassName) || result.startsWith(targetClassName + '$')) {
return false;
}
/*
* This might look heavy-weight but, with only the ClassLoader API available, trying to load the
* resource as a class is the only reliable way found so far to differentiate between a class and a
* package. Other options, such as getResource(), fail for some edge cases on case insensitive file
* systems. As this code is only called at compile time, the performance impact is not a significant
* concern.
*/
try {
classLoader.loadClass(result);
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
return true;
}
return false;
}
@Override
public boolean isPackage(char[][] parentPackageName, char[] packageName) {
StringBuilder result = new StringBuilder();
int i = 0;
if (parentPackageName != null) {
for (; i < parentPackageName.length; i++) {
if (i > 0) {
result.append('.');
}
result.append(parentPackageName[i]);
}
}
if (Character.isUpperCase(packageName[0])) {
if (!isPackage(result.toString())) {
return false;
}
}
if (i > 0) {
result.append('.');
}
result.append(packageName);
return isPackage(result.toString());
}
@Override
public void cleanup() {
}
};
final IErrorHandlingPolicy policy = DefaultErrorHandlingPolicies.proceedWithAllProblems();
final Map<String,String> settings = new HashMap<>();
settings.put(CompilerOptions.OPTION_LineNumberAttribute, CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_SourceFileAttribute, CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_ReportDeprecation, CompilerOptions.IGNORE);
if (ctxt.getOptions().getJavaEncoding() != null) {
settings.put(CompilerOptions.OPTION_Encoding, ctxt.getOptions().getJavaEncoding());
}
if (ctxt.getOptions().getClassDebugInfo()) {
settings.put(CompilerOptions.OPTION_LocalVariableAttribute, CompilerOptions.GENERATE);
}
// Source JVM
if (ctxt.getOptions().getCompilerSourceVM() != null) {
String opt = ctxt.getOptions().getCompilerSourceVM();
switch (opt) {
case "1.1" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_1);
case "1.2" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_2);
case "1.3" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_3);
case "1.4" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_4);
case "1.5" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
case "1.6" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_6);
case "1.7" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_7);
case "1.8" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_8);
// Version format changed from Java 9 onwards.
// Support old format that was used in EA implementation as well
case "9", "1.9" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_9);
case "10" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_10);
case "11" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_11);
case "12" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_12);
case "13" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_13);
case "14" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_14);
case "15" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_15);
case "16" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_16);
case "17" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_17);
case "18" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_18);
case "19" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_19);
case "20" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_20);
case "21" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_21);
case "22" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_22);
case "23" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_23);
case "24" ->
// Constant not available in latest ECJ version shipped with
// Tomcat. May be supported in a snapshot build.
// This is checked against the actual version below.
settings.put(CompilerOptions.OPTION_Source, "24");
case "25" ->
// Constant not available in latest ECJ version shipped with
// Tomcat. May be supported in a snapshot build.
// This is checked against the actual version below.
settings.put(CompilerOptions.OPTION_Source, "25");
default -> {
log.warn(Localizer.getMessage("jsp.warning.unknown.sourceVM", opt));
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_21);
}
}
} else {
// Default to 21
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_21);
}
// Target JVM
if (ctxt.getOptions().getCompilerTargetVM() != null) {
String opt = ctxt.getOptions().getCompilerTargetVM();
switch (opt) {
case "1.1" -> settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_1);
case "1.2" -> settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_2);
case "1.3" -> settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_3);
case "1.4" -> settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_4);
case "1.5" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_5);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_5);
}
case "1.6" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_6);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_6);
}
case "1.7" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_7);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_7);
}
case "1.8" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_8);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_8);
// Version format changed from Java 9 onwards.
// Support old format that was used in EA implementation as well
}
case "9", "1.9" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_9);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_9);
}
case "10" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_10);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_10);
}
case "11" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_11);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_11);
}
case "12" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_12);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_12);
}
case "13" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_13);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_13);
}
case "14" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_14);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_14);
}
case "15" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_15);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_15);
}
case "16" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_16);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_16);
}
case "17" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_17);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_17);
}
case "18" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_18);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_18);
}
case "19" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_19);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_19);
}
case "20" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_20);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_20);
}
case "21" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_21);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_21);
}
case "22" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_22);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_22);
}
case "23" -> {
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_23);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_23);
}
case "24" -> {
// Constant not available in latest ECJ version shipped with
// Tomcat. May be supported in a snapshot build.
// This is checked against the actual version below.
settings.put(CompilerOptions.OPTION_TargetPlatform, "24");
settings.put(CompilerOptions.OPTION_Compliance, "24");
}
case "25" -> {
// Constant not available in latest ECJ version shipped with
// Tomcat. May be supported in a snapshot build.
// This is checked against the actual version below.
settings.put(CompilerOptions.OPTION_TargetPlatform, "25");
settings.put(CompilerOptions.OPTION_Compliance, "25");
}
default -> {
log.warn(Localizer.getMessage("jsp.warning.unknown.targetVM", opt));
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_21);
}
}
} else {
// Default to 21
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_21);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_21);
}
final IProblemFactory problemFactory = new DefaultProblemFactory(Locale.getDefault());
final ICompilerRequestor requestor = result -> {
try {
if (result.hasProblems()) {
IProblem[] problems = result.getProblems();
for (IProblem problem : problems) {
if (problem.isError()) {
String name = new String(problem.getOriginatingFileName());
try {
problemList.add(ErrorDispatcher.createJavacError(name, pageNodes,
new StringBuilder(problem.getMessage()), problem.getSourceLineNumber(),
ctxt));
} catch (JasperException e) {
log.error(Localizer.getMessage("jsp.error.compilation.jdtProblemError"), e);
}
}
}
}
if (problemList.isEmpty()) {
ClassFile[] classFiles = result.getClassFiles();
for (ClassFile classFile : classFiles) {
char[][] compoundName = classFile.getCompoundName();
StringBuilder classFileName = new StringBuilder(outputDir).append('/');
for (int j = 0; j < compoundName.length; j++) {
if (j > 0) {
classFileName.append('/');
}
classFileName.append(compoundName[j]);
}
byte[] bytes = classFile.getBytes();
classFileName.append(".class");
try (FileOutputStream fout = new FileOutputStream(classFileName.toString());
BufferedOutputStream bos = new BufferedOutputStream(fout)) {
bos.write(bytes);
}
}
}
} catch (IOException exc) {
log.error(Localizer.getMessage("jsp.error.compilation.jdt"), exc);
}
};
ICompilationUnit[] compilationUnits = new ICompilationUnit[classNames.length];
for (int i = 0; i < compilationUnits.length; i++) {
String className = classNames[i];
compilationUnits[i] = new CompilationUnit(fileNames[i], className);
}
CompilerOptions cOptions = new CompilerOptions(settings);
// Check source/target JDK versions as the newest versions are allowed
// in Tomcat configuration but may not be supported by the ECJ version
// being used.
String requestedSource = ctxt.getOptions().getCompilerSourceVM();
if (requestedSource != null) {
String actualSource = CompilerOptions.versionFromJdkLevel(cOptions.sourceLevel);
if (!requestedSource.equals(actualSource)) {
log.warn(Localizer.getMessage("jsp.warning.unsupported.sourceVM", requestedSource, actualSource));
}
}
String requestedTarget = ctxt.getOptions().getCompilerTargetVM();
if (requestedTarget != null) {
String actualTarget = CompilerOptions.versionFromJdkLevel(cOptions.targetJDK);
if (!requestedTarget.equals(actualTarget)) {
log.warn(Localizer.getMessage("jsp.warning.unsupported.targetVM", requestedTarget, actualTarget));
}
}
cOptions.parseLiteralExpressionsAsConstants = true;
Compiler compiler = new Compiler(env, policy, cOptions, requestor, problemFactory);
compiler.compile(compilationUnits);
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);
}
}