private byte[] loadClassData(String className) throws IOException {
Playground.println("Loading class " + className + ".class", warning);
File f = new File(System.getProperty("user.dir") + "/" + className + ".class");
byte[] b = new byte[(int) f.length()];
new FileInputStream(f).read(b);
return b;
}
void test(String[] opts, String className) throws Exception {
count++;
System.err.println("Test " + count + " " + Arrays.asList(opts) + " " + className);
Path testSrcDir = Paths.get(System.getProperty("test.src"));
Path testClassesDir = Paths.get(System.getProperty("test.classes"));
Path classes = Paths.get("classes." + count);
classes.createDirectory();
Context ctx = new Context();
PathFileManager fm = new JavacPathFileManager(ctx, true, null);
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
List<String> options = new ArrayList<String>();
options.addAll(Arrays.asList(opts));
options.addAll(Arrays.asList("-verbose", "-XDverboseCompilePolicy", "-d", classes.toString()));
Iterable<? extends JavaFileObject> compilationUnits =
fm.getJavaFileObjects(testSrcDir.resolve(className + ".java"));
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
JavaCompiler.CompilationTask t =
compiler.getTask(out, fm, null, options, null, compilationUnits);
boolean ok = t.call();
System.err.println(sw.toString());
if (!ok) {
throw new Exception("compilation failed");
}
File expect = new File("classes." + count + "/" + className + ".class");
if (!expect.exists()) throw new Exception("expected file not found: " + expect);
long expectedSize = new File(testClassesDir.toString(), className + ".class").length();
long actualSize = expect.length();
if (expectedSize != actualSize)
throw new Exception("wrong size found: " + actualSize + "; expected: " + expectedSize);
}