public static void printElement(Site s, int index) {
if (s == null || index >= s.site().length) {
ps.print("(null)");
} else {
StackTraceElement e = s.site()[index];
ps.print(e.getMethodName() + " (" + e.getFileName() + ":" + e.getLineNumber() + ")");
}
}
/**
* Returns the class this method was called 'framesToSkip' frames up the caller hierarchy. JDK
* used to have {@link sun.reflect.Reflection#getCallerClass(int)} until jdk 1.8 build 87. So we
* have to resort to slow stack unwinding.
*
* <p>NOTE: <b>Extremely expensive! Please consider not using it. These aren't the droids you're
* looking for!</b>
*/
@SuppressWarnings("JavadocReference")
@Nullable
public static Class getCallerClass(int framesToSkip) {
int frames = framesToSkip;
StackTraceElement[] stackTrace = new Throwable().getStackTrace();
String className = null;
for (int i = 1; i <= frames; i++) {
if (i >= stackTrace.length) {
break;
}
StackTraceElement element = stackTrace[i];
className = element.getClassName();
if (className.equals("java.lang.reflect.Method")
|| className.equals("sun.reflect.NativeMethodAccessorImpl")
|| className.equals("sun.reflect.DelegatingMethodAccessorImpl")) {
frames++;
continue;
}
if (i == frames) {
break;
}
}
if (className == null) {
// some plugins incorrectly expect not-null class too far up the caller chain,
// so provide some not-null class for them
className = ReflectionUtil.class.getName();
}
try {
return Class.forName(className);
} catch (ClassNotFoundException ignored) {
}
ClassLoader pluginClassLoader = PLUGIN_CLASS_LOADER_DETECTOR.fun(className);
if (pluginClassLoader != null) {
try {
return Class.forName(className, false, pluginClassLoader);
} catch (ClassNotFoundException ignored) {
}
}
LOG.error(
"Could not load class '"
+ className
+ "' using classLoader "
+ ReflectionUtil.class.getClassLoader()
+ "."
+ (stackTrace[1].getClassName().equals("com.intellij.openapi.util.IconLoader")
? " Use getIcon(String, Class) instead."
: ""));
return null;
}
@Override
public int hashCode() {
if (hashCode == 0) {
int res = 1 + site.length * 17;
int max = Math.max(site.length, 10);
for (int i = offset; i < max; i++) {
StackTraceElement e = site[i];
int lineNumber = e.getLineNumber();
res = res * 19 + 31 * lineNumber;
}
hashCode = res;
}
return hashCode;
}
public static void printElements(Site s, int index, int nelems) {
if (s == null || index >= s.site().length) {
ps.print("(null)");
} else {
for (int i = 0; i < nelems; i++) {
int j = index + i;
if (j >= s.site().length) {
break;
}
if (i > 0) {
ps.print(", ");
}
StackTraceElement e = s.site()[j];
ps.print(e.getMethodName() + " (" + e.getFileName() + ":" + e.getLineNumber() + ")");
}
}
}
public static void printSite(Site s, StringBuilder out) {
if (s == null) {
out.append("(null)");
return;
}
StackTraceElement[] st = s.site();
int interestingSitesPrinted = 0;
for (int i = s.offset; i < st.length; i++) {
StackTraceElement e = st[i];
String fileName = e.getFileName();
if (THIS_FILE_NAME.equals(fileName)) {
continue;
}
out.append(" " + e.getMethodName() + "(" + e.getFileName() + ":" + e.getLineNumber() + ")");
interestingSitesPrinted++;
if (interestingSitesPrinted <= SITES_TO_PRINT) {
continue;
}
if (fileName == null || "View.java".equals(fileName)) {
continue;
}
String methodName = e.getMethodName();
if (skipMethods.contains(methodName)) {
continue;
}
break;
}
}
protected static boolean wasCalledDuringClassLoading() {
if (LOCK.isHeldByCurrentThread()) return true;
LOCK.lock();
try {
StackTrace st = new StackTrace(new Throwable());
int n = st.getDepth();
for (int i = 3; i < n; i++) {
StackTraceElement ste = st.getElement(i);
if ("ClassLoader.java".equals(ste.getFileName())
&& "loadClass".equals(ste.getMethodName())) {
return true;
}
}
return false;
} finally {
LOCK.unlock();
}
}