/**
* ECMA 15.11.4.4 Error.prototype.toString ( )
*
* @param self self reference
* @return this NativeError as a string
*/
@Function(attributes = Attribute.NOT_ENUMERABLE)
public static Object toString(final Object self) {
// Step 1 and 2 : check if 'self' is object it not throw TypeError
final ScriptObject sobj = Global.checkObject(self);
// Step 3 & 4 : get "name" and convert to String.
// But if message is undefined make it "Error".
Object name = sobj.get("name");
if (name == UNDEFINED) {
name = "Error";
} else {
name = JSType.toString(name);
}
// Steps 5, 6, & 7 : get "message" and convert to String.
// if 'message' is undefined make it "" (empty String).
Object msg = sobj.get("message");
if (msg == UNDEFINED) {
msg = "";
} else {
msg = JSType.toString(msg);
}
// Step 8 : if name is empty, return msg
if (((String) name).isEmpty()) {
return msg;
}
// Step 9 : if message is empty, return name
if (((String) msg).isEmpty()) {
return name;
}
// Step 10 : return name + ": " + msg
return name + ": " + msg;
}
/**
* Nashorn extension Accessed from {@link Global} while setting up the Error.prototype
*
* @param self self reference
* @param value value to set "stack" property to, must be {@code ScriptObject}
* @return value that was set
*/
public static Object setStack(final Object self, final Object value) {
final ScriptObject sobj = Global.checkObject(self);
if (sobj.hasOwnProperty(STACK)) {
sobj.put(STACK, value, false);
} else {
sobj.addOwnProperty(STACK, Attribute.NOT_ENUMERABLE, value);
}
return value;
}
/**
* Nashorn extension: Error.prototype.fileName
*
* @param self self reference
* @param value value of file name
* @return value that was set
*/
public static Object setFileName(final Object self, final Object value) {
final ScriptObject sobj = Global.checkObject(self);
if (sobj.hasOwnProperty(FILENAME)) {
sobj.put(FILENAME, value, false);
} else {
sobj.addOwnProperty(FILENAME, Attribute.NOT_ENUMERABLE, value);
}
return value;
}
/**
* Nashorn extension: Error.prototype.columnNumber
*
* @param self self reference
* @param value value of column number
* @return value that was set
*/
public static Object setColumnNumber(final Object self, final Object value) {
final ScriptObject sobj = Global.checkObject(self);
if (sobj.hasOwnProperty(COLUMNNUMBER)) {
sobj.put(COLUMNNUMBER, value, false);
} else {
sobj.addOwnProperty(COLUMNNUMBER, Attribute.NOT_ENUMERABLE, value);
}
return value;
}
/**
* Nashorn extension: Error.captureStackTrace. Capture stack trace at the point of call into the
* Error object provided.
*
* @param self self reference
* @param errorObj the error object
* @return undefined
*/
@Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
public static Object captureStackTrace(final Object self, final Object errorObj) {
final ScriptObject sobj = Global.checkObject(errorObj);
initException(sobj);
sobj.delete(STACK, false);
if (!sobj.has("stack")) {
final ScriptFunction getStack = ScriptFunctionImpl.makeFunction("getStack", GET_STACK);
final ScriptFunction setStack = ScriptFunctionImpl.makeFunction("setStack", SET_STACK);
sobj.addOwnProperty("stack", Attribute.NOT_ENUMERABLE, getStack, setStack);
}
return UNDEFINED;
}
/**
* Nashorn extension: Error.prototype.getStackTrace() "stack" property is an array typed value
* containing {@link StackTraceElement} objects of JavaScript stack frames.
*
* @param self self reference
* @return stack trace as a script array.
*/
@Function(attributes = Attribute.NOT_ENUMERABLE)
public static Object getStackTrace(final Object self) {
final ScriptObject sobj = Global.checkObject(self);
final Object exception = ECMAException.getException(sobj);
Object[] res;
if (exception instanceof Throwable) {
res = NashornException.getScriptFrames((Throwable) exception);
} else {
res = ScriptRuntime.EMPTY_ARRAY;
}
return new NativeArray(res);
}
/**
* Nashorn extension: Error.prototype.stack "stack" property is a string typed value containing
* JavaScript stack frames. Each frame information is separated bv "\n" character.
*
* @param self self reference
* @return value of "stack" property
*/
public static Object getStack(final Object self) {
final ScriptObject sobj = Global.checkObject(self);
if (sobj.has(STACK)) {
return sobj.get(STACK);
}
final Object exception = ECMAException.getException(sobj);
if (exception instanceof Throwable) {
final Object value = getScriptStackString(sobj, (Throwable) exception);
if (sobj.hasOwnProperty(STACK)) {
sobj.put(STACK, value, false);
} else {
sobj.addOwnProperty(STACK, Attribute.NOT_ENUMERABLE, value);
}
return value;
}
return UNDEFINED;
}
/**
* Nashorn extension: Error.prototype.fileName
*
* @param self self reference
* @return file name from which error was thrown
*/
public static Object getFileName(final Object self) {
final ScriptObject sobj = Global.checkObject(self);
return sobj.has(FILENAME) ? sobj.get(FILENAME) : ECMAException.getFileName((ScriptObject) self);
}
/**
* Nashorn extension: Error.prototype.columnNumber
*
* @param self self reference
* @return column number from which error was thrown
*/
public static Object getColumnNumber(final Object self) {
final ScriptObject sobj = Global.checkObject(self);
return sobj.has(COLUMNNUMBER)
? sobj.get(COLUMNNUMBER)
: ECMAException.getColumnNumber((ScriptObject) self);
}
/**
* Nashorn extension: Error.prototype.lineNumber
*
* @param self self reference
* @return line number from which error was thrown
*/
public static Object getLineNumber(final Object self) {
final ScriptObject sobj = Global.checkObject(self);
return sobj.has(LINENUMBER) ? sobj.get(LINENUMBER) : ECMAException.getLineNumber(sobj);
}
/**
* Nashorn extension: Error.prototype.printStackTrace prints stack trace associated with the
* exception (if available). to the standard error stream.
*
* @param self self reference
* @return result of {@link ECMAException#printStackTrace(ScriptObject)}, which is typically
* undefined
*/
@Function(attributes = Attribute.NOT_ENUMERABLE)
public static Object printStackTrace(final Object self) {
return ECMAException.printStackTrace(Global.checkObject(self));
}