/**
* 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: 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.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.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.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);
}
