Jsr199JavaCompilerpublic class Jsr199JavaCompiler extends Object implements JavaCompiler| Invoke Java Compiler per JSR 199, using in-memory storage for both the
input Java source and the generated bytecodes. |
| Fields Summary |
|---|
| private List | cpath | | private JspRuntimeContext | rtctxt | | private ArrayList | classFiles | | private ArrayList | options | | private CharArrayWriter | charArrayWriter | | private org.apache.jasper.JspCompilationContext | ctxt | | private String | javaFileName | | private String | javaEncoding | | private ErrorDispatcher | errDispatcher |
| Methods Summary |
|---|
| public JavacErrorDetail[] | compile(java.lang.String className, Node.Nodes pageNodes)
final String source = charArrayWriter.toString();
javax.tools.JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector<JavaFileObject> diagnostics =
new DiagnosticCollector<JavaFileObject>();
StandardJavaFileManager stdFileManager =
javac.getStandardFileManager(diagnostics, null, null);
String name = className.substring(className.lastIndexOf('.")+1);
JavaFileObject[] sourceFiles = {
new SimpleJavaFileObject(
URI.create("string:///" + name.replace('.",'/") +
Kind.SOURCE.extension),
Kind.SOURCE) {
public CharSequence getCharContent(boolean ignore) {
return source;
}
}
};
try {
stdFileManager.setLocation(StandardLocation.CLASS_PATH, this.cpath);
} catch (IOException e) {
}
JavaFileManager javaFileManager = getJavaFileManager(stdFileManager);
javax.tools.JavaCompiler.CompilationTask ct =
javac.getTask(null,
javaFileManager,
diagnostics,
options,
null,
Arrays.asList(sourceFiles));
try {
javaFileManager.close();
} catch (IOException ex) {
}
if (ct.call()) {
for (BytecodeFile bytecodeFile: classFiles) {
rtctxt.setBytecode(bytecodeFile.getClassName(),
bytecodeFile.getBytecode());
}
return null;
}
// There are compilation errors!
ArrayList<JavacErrorDetail> problems =
new ArrayList<JavacErrorDetail>();
for (Diagnostic dm: diagnostics.getDiagnostics()) {
problems.add(ErrorDispatcher.createJavacError(
source,
pageNodes,
new StringBuffer(dm.getMessage(null)),
(int) dm.getLineNumber()));
}
return problems.toArray(new JavacErrorDetail[0]);
| | public void | doJavaFile(boolean keep)
if (! keep)
return;
try {
Writer writer = new OutputStreamWriter(
new FileOutputStream(javaFileName),
javaEncoding);
writer.write(charArrayWriter.toString());
writer.close();
} catch (UnsupportedEncodingException ex) {
errDispatcher.jspError("jsp.error.needAlternateJavaEncoding",
javaEncoding);
} catch (IOException ex) {
throw new JasperException(ex);
}
| | public long | getClassLastModified()
String className = ctxt.getFullClassName();
return rtctxt.getBytecodeBirthTime(className);
| | private javax.tools.JavaFileManager | getJavaFileManager(javax.tools.JavaFileManager fm)
return new ForwardingJavaFileManager<JavaFileManager>(fm) {
/*
@Override
public FileObject getFileForOutput(Location location,
String packageName,
String relativeName,
FileObject sibling){
System.out.println(" At getFileForOutput: location = " +
location + " pachageName = " + packageName +
" relativeName = " + relativeName +
" sibling = " + sibling);
return getOutputFile(relativeName, null);
}
*/
@Override
public JavaFileObject getJavaFileForOutput(Location location,
String className,
Kind kind,
FileObject sibling){
return getOutputFile(className,
URI.create("file:///" + className.replace('.",'/") + kind));
}
@Override
public String inferBinaryName(Location location,
JavaFileObject file) {
if (file instanceof BytecodeFile) {
return ((BytecodeFile)file).getClassName();
}
return super.inferBinaryName(location, file);
}
@Override
public Iterable<JavaFileObject> list(Location location,
String packageName,
Set<Kind> kinds,
boolean recurse)
throws IOException {
if (location == StandardLocation.CLASS_PATH &&
packageName.startsWith(Constants.JSP_PACKAGE_NAME)) {
// TODO: Need to handle the case where some of the classes
// are on disk
Map<String,ArrayList<Object/*JavaFileObject*/>> packageMap =
rtctxt.getPackageMap();
ArrayList/*<JavaFileObject>*/ packageFiles
= packageMap.get(packageName);
if (packageFiles != null) {
return packageFiles;
}
}
Iterable<JavaFileObject> lst =
super.list(location, packageName, kinds, recurse);
return lst;
}
};
| | public java.io.Writer | getJavaWriter(java.lang.String javaFileName, java.lang.String javaEncoding)
this.javaFileName = javaFileName;
this.javaEncoding = javaEncoding;
this.charArrayWriter = new CharArrayWriter();
return this.charArrayWriter;
| | private javax.tools.JavaFileObject | getOutputFile(java.lang.String className, java.net.URI uri)
BytecodeFile classFile = new BytecodeFile(uri, className);
// File the class file away, by its package name
String packageName = className.substring(0, className.lastIndexOf("."));
Map<String, ArrayList<Object /*JavaFileObject*/>> packageMap =
rtctxt.getPackageMap();
ArrayList<Object/*JavaFileObject*/> packageFiles = packageMap.get(packageName);
if (packageFiles == null) {
packageFiles = new ArrayList<Object/*JavaFileObject*/>();
packageMap.put(packageName, packageFiles);
}
packageFiles.add(classFile);
classFiles.add(classFile);
return classFile;
| | public void | init(org.apache.jasper.JspCompilationContext ctxt, ErrorDispatcher errDispatcher, boolean suppressLogging)
this.ctxt = ctxt;
this.errDispatcher = errDispatcher;
rtctxt = ctxt.getRuntimeContext();
options.add("-proc:none"); // Disable annotation processing
| | public void | saveClassFile(java.lang.String className, java.lang.String classFileName)
for (BytecodeFile bytecodeFile: classFiles) {
String c = bytecodeFile.getClassName();
String f = classFileName;
if (!className.equals(c)) {
// Compute inner class file name
f = f.substring(0, f.lastIndexOf(File.separator)+1) +
c.substring(c.lastIndexOf('.")+1) + ".class";
}
rtctxt.saveBytecode(c, f);
}
| | public void | setClassPath(java.util.List path)
this.cpath = path;
| | public void | setDebug(boolean debug)
if (debug) {
options.add("-g");
}
| | public void | setExtdirs(java.lang.String exts)
options.add("-extdirs");
options.add(exts);
| | public void | setSourceVM(java.lang.String sourceVM)
options.add("-source");
options.add(sourceVM);
| | public void | setTargetVM(java.lang.String targetVM)
options.add("-target");
options.add(targetVM);
|
|
