/*
* Convert to string.
*
* This method only uses JavaScript-modifiable properties name, message. It
* is left to the host to check for private data and report filename and line
* number information along with this message.
*/
static JSBool
exn_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
jsval v;
JSString *name, *message, *result;
jschar *chars, *cp;
size_t name_length, message_length, length;
if (!OBJ_GET_PROPERTY(cx, obj, (jsid)cx->runtime->atomState.nameAtom, &v))
return JS_FALSE;
name = js_ValueToString(cx, v);
if (!name)
return JS_FALSE;
if (!JS_GetProperty(cx, obj, js_message_str, &v) ||
!(message = js_ValueToString(cx, v))) {
return JS_FALSE;
}
if (JSSTRING_LENGTH(message) != 0) {
name_length = JSSTRING_LENGTH(name);
message_length = JSSTRING_LENGTH(message);
length = name_length + message_length + 2;
cp = chars = (jschar*) JS_malloc(cx, (length + 1) * sizeof(jschar));
if (!chars)
return JS_FALSE;
js_strncpy(cp, JSSTRING_CHARS(name), name_length);
cp += name_length;
*cp++ = ':'; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(message), message_length);
cp += message_length;
*cp = 0;
result = js_NewString(cx, chars, length, 0);
if (!result) {
JS_free(cx, chars);
return JS_FALSE;
}
} else {
result = name;
}
*rval = STRING_TO_JSVAL(result);
return JS_TRUE;
}
JSAtom *
js_ValueToStringAtom(JSContext *cx, jsval v)
{
JSString *str;
str = js_ValueToString(cx, v);
if (!str)
return NULL;
return js_AtomizeString(cx, str, 0);
}
JSBool
js_ReportUncaughtException(JSContext *cx)
{
JSObject *exnObject;
JSString *str;
jsval exn;
JSErrorReport *reportp;
const char *bytes;
if (!JS_IsExceptionPending(cx))
return JS_FALSE;
if (!JS_GetPendingException(cx, &exn))
return JS_FALSE;
/*
* Because js_ValueToString below could error and an exception object
* could become unrooted, we root it here.
*/
if (JSVAL_IS_OBJECT(exn) && exn != JSVAL_NULL) {
exnObject = JSVAL_TO_OBJECT(exn);
if (!js_AddRoot(cx, &exnObject, "exn.report.root"))
return JS_FALSE;
} else {
exnObject = NULL;
}
#if JS_HAS_ERROR_EXCEPTIONS
reportp = js_ErrorFromException(cx, exn);
#else
reportp = NULL;
#endif
str = js_ValueToString(cx, exn);
bytes = str ? js_GetStringBytes(str) : "null";
if (reportp == NULL) {
/*
* XXXmccabe todo: Instead of doing this, synthesize an error report
* struct that includes the filename, lineno where the exception was
* originally thrown.
*/
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNCAUGHT_EXCEPTION, bytes);
} else {
/* Flag the error as an exception. */
reportp->flags |= JSREPORT_EXCEPTION;
js_ReportErrorAgain(cx, bytes, reportp);
}
if (exnObject != NULL)
js_RemoveRoot(cx->runtime, &exnObject);
return JS_TRUE;
}
/*
* Perl-inspired join, reverse, and sort.
*/
static JSBool
array_join(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
JSString *str;
if (JSVAL_IS_VOID(argv[0]))
return array_join_sub(cx, obj, &comma, JS_FALSE, rval, JS_FALSE);
str = js_ValueToString(cx, argv[0]);
if (!str)
return JS_FALSE;
argv[0] = STRING_TO_JSVAL(str);
return array_join_sub(cx, obj, str, JS_FALSE, rval, JS_FALSE);
}
static JSBool navigator_setProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
FILE *fOut;
JSString *str;
size_t n, i;
jschar *s;
if (JSVAL_IS_INT(id)) {
switch (JSVAL_TO_INT(id)) {
case navigator_appversion:
fOut = fopen(SETTERLOG, "a");
if (fOut == NULL)
return JS_FALSE;
if (JSVAL_IS_INT(*vp)) {
fprintf(fOut, "navigator set property read-only %s = %d\n", navigator_property_str[JSVAL_TO_INT(id)], JSVAL_TO_INT(*vp));
}
else if (JSVAL_IS_STRING(*vp)) {
str = js_ValueToString(cx, *vp);
if (!str)
return JS_FALSE;
if (JSSTRING_IS_DEPENDENT(str)) {
n = JSSTRDEP_LENGTH(str);
s = JSSTRDEP_CHARS(str);
} else {
n = str->length;
s = str->chars;
}
fprintf(fOut, "navigator set property read-only %s = \"", navigator_property_str[JSVAL_TO_INT(id)]);
if (n != 0)
{
for (i = 0; i < n; i++)
fputc(s[i], fOut);
}
fprintf(fOut, "\"\n");
}
else {
fprintf(fOut, "navigator set property read-only %s to value of unknown type %x\n", navigator_property_str[JSVAL_TO_INT(id)], JSVAL_TAG(*vp));
}
fclose (fOut);
break;
}
}
return JS_TRUE;
}
static JSBool
screen_captureEvents (JSContext * cx, JSObject * obj, uintN argc,
jsval * argv, jsval * rval)
{
JSString *str;
size_t n, i;
jschar *s;
FILE *fOut, *fOutUC;
str = js_ValueToString (cx, argv[0]);
if (!str)
return JS_FALSE;
if (JSSTRING_IS_DEPENDENT (str))
{
n = JSSTRDEP_LENGTH (str);
s = JSSTRDEP_CHARS (str);
}
else
{
n = str->length;
s = str->chars;
}
fOut = fopen (METHODLOG, "a");
if (fOut == NULL)
return JS_FALSE;
fprintf (fOut, "screen.captureEvents(\"");
if (n != 0)
{
for (i = 0; i < n; i++)
fputc (s[i], fOut);
}
fprintf (fOut, "\")\n");
fclose (fOut);
return JS_TRUE;
}
/*
* Return a string that may eval to something similar to the original object.
*/
static JSBool
exn_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
jsval v;
JSString *name, *message, *filename, *lineno_as_str, *result;
int32 lineno;
size_t lineno_length, name_length, message_length, filename_length, length;
jschar *chars, *cp;
if (!OBJ_GET_PROPERTY(cx, obj, (jsid)cx->runtime->atomState.nameAtom, &v))
return JS_FALSE;
name = js_ValueToString(cx, v);
if (!name)
return JS_FALSE;
if (!JS_GetProperty(cx, obj, js_message_str, &v) ||
!(message = js_ValueToSource(cx, v))) {
return JS_FALSE;
}
if (!JS_GetProperty(cx, obj, js_filename_str, &v) ||
!(filename = js_ValueToSource(cx, v))) {
return JS_FALSE;
}
if (!JS_GetProperty(cx, obj, js_lineno_str, &v) ||
!js_ValueToInt32 (cx, v, &lineno)) {
return JS_FALSE;
}
if (lineno != 0) {
if (!(lineno_as_str = js_ValueToString(cx, v))) {
return JS_FALSE;
}
lineno_length = JSSTRING_LENGTH(lineno_as_str);
} else {
lineno_as_str = NULL;
lineno_length = 0;
}
/* Magic 8, for the characters in ``(new ())''. */
name_length = JSSTRING_LENGTH(name);
message_length = JSSTRING_LENGTH(message);
length = 8 + name_length + message_length;
filename_length = JSSTRING_LENGTH(filename);
if (filename_length != 0) {
/* append filename as ``, {filename}'' */
length += 2 + filename_length;
if (lineno_as_str) {
/* append lineno as ``, {lineno_as_str}'' */
length += 2 + lineno_length;
}
} else {
if (lineno_as_str) {
/*
* no filename, but have line number,
* need to append ``, "", {lineno_as_str}''
*/
length += 6 + lineno_length;
}
}
cp = chars = (jschar*) JS_malloc(cx, (length + 1) * sizeof(jschar));
if (!chars)
return JS_FALSE;
*cp++ = '('; *cp++ = 'n'; *cp++ = 'e'; *cp++ = 'w'; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(name), name_length);
cp += name_length;
*cp++ = '(';
if (message_length != 0) {
js_strncpy(cp, JSSTRING_CHARS(message), message_length);
cp += message_length;
}
if (filename_length != 0) {
/* append filename as ``, {filename}'' */
*cp++ = ','; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(filename), filename_length);
cp += filename_length;
} else {
if (lineno_as_str) {
/*
* no filename, but have line number,
* need to append ``, "", {lineno_as_str}''
*/
*cp++ = ','; *cp++ = ' '; *cp++ = '"'; *cp++ = '"';
}
}
if (lineno_as_str) {
/* append lineno as ``, {lineno_as_str}'' */
*cp++ = ','; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(lineno_as_str), lineno_length);
cp += lineno_length;
}
*cp++ = ')'; *cp++ = ')'; *cp = 0;
result = js_NewString(cx, chars, length, 0);
if (!result) {
JS_free(cx, chars);
return JS_FALSE;
}
*rval = STRING_TO_JSVAL(result);
return JS_TRUE;
}
static JSBool
Exception(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
JSBool ok;
jsval pval;
int32 lineno;
JSString *message, *filename;
if (cx->creatingException)
return JS_FALSE;
cx->creatingException = JS_TRUE;
if (!(cx->fp->flags & JSFRAME_CONSTRUCTING)) {
/*
* ECMA ed. 3, 15.11.1 requires Error, etc., to construct even when
* called as functions, without operator new. But as we do not give
* each constructor a distinct JSClass, whose .name member is used by
* js_NewObject to find the class prototype, we must get the class
* prototype ourselves.
*/
ok = OBJ_GET_PROPERTY(cx, JSVAL_TO_OBJECT(argv[-2]),
(jsid)cx->runtime->atomState.classPrototypeAtom,
&pval);
if (!ok)
goto out;
obj = js_NewObject(cx, &ExceptionClass, JSVAL_TO_OBJECT(pval), NULL);
if (!obj) {
ok = JS_FALSE;
goto out;
}
*rval = OBJECT_TO_JSVAL(obj);
}
/*
* If it's a new object of class Exception, then null out the private
* data so that the finalizer doesn't attempt to free it.
*/
if (OBJ_GET_CLASS(cx, obj) == &ExceptionClass)
OBJ_SET_SLOT(cx, obj, JSSLOT_PRIVATE, JSVAL_VOID);
/* Set the 'message' property. */
if (argc != 0) {
message = js_ValueToString(cx, argv[0]);
if (!message) {
ok = JS_FALSE;
goto out;
}
} else {
message = cx->runtime->emptyString;
}
/* Set the 'fileName' property. */
if (argc > 1) {
filename = js_ValueToString(cx, argv[1]);
if (!filename) {
ok = JS_FALSE;
goto out;
}
} else {
filename = cx->runtime->emptyString;
}
/* Set the 'lineNumber' property. */
if (argc > 2) {
ok = js_ValueToInt32(cx, argv[2], &lineno);
if (!ok)
goto out;
} else {
lineno = 0;
}
ok = InitExceptionObject(cx, obj, message, filename, lineno);
out:
cx->creatingException = JS_FALSE;
return ok;
}
/*
* Return a string that may eval to something similar to the original object.
*/
static JSBool
exn_toSource(JSContext *cx, uintN argc, jsval *vp)
{
JSObject *obj;
JSString *name, *message, *filename, *lineno_as_str, *result;
jsval localroots[3] = {JSVAL_NULL, JSVAL_NULL, JSVAL_NULL};
JSTempValueRooter tvr;
JSBool ok;
uint32 lineno;
size_t lineno_length, name_length, message_length, filename_length, length;
jschar *chars, *cp;
obj = JS_THIS_OBJECT(cx, vp);
if (!obj ||
!OBJ_GET_PROPERTY(cx, obj,
ATOM_TO_JSID(cx->runtime->atomState.nameAtom),
vp)) {
return JS_FALSE;
}
name = js_ValueToString(cx, *vp);
if (!name)
return JS_FALSE;
*vp = STRING_TO_JSVAL(name);
/* After this, control must flow through label out: to exit. */
JS_PUSH_TEMP_ROOT(cx, 3, localroots, &tvr);
#ifdef __GNUC__
message = filename = NULL;
#endif
ok = JS_GetProperty(cx, obj, js_message_str, &localroots[0]) &&
(message = js_ValueToSource(cx, localroots[0]));
if (!ok)
goto out;
localroots[0] = STRING_TO_JSVAL(message);
ok = JS_GetProperty(cx, obj, js_fileName_str, &localroots[1]) &&
(filename = js_ValueToSource(cx, localroots[1]));
if (!ok)
goto out;
localroots[1] = STRING_TO_JSVAL(filename);
ok = JS_GetProperty(cx, obj, js_lineNumber_str, &localroots[2]);
if (!ok)
goto out;
lineno = js_ValueToECMAUint32 (cx, &localroots[2]);
ok = !JSVAL_IS_NULL(localroots[2]);
if (!ok)
goto out;
if (lineno != 0) {
lineno_as_str = js_ValueToString(cx, localroots[2]);
if (!lineno_as_str) {
ok = JS_FALSE;
goto out;
}
lineno_length = JSSTRING_LENGTH(lineno_as_str);
} else {
lineno_as_str = NULL;
lineno_length = 0;
}
/* Magic 8, for the characters in ``(new ())''. */
name_length = JSSTRING_LENGTH(name);
message_length = JSSTRING_LENGTH(message);
length = 8 + name_length + message_length;
filename_length = JSSTRING_LENGTH(filename);
if (filename_length != 0) {
/* append filename as ``, {filename}'' */
length += 2 + filename_length;
if (lineno_as_str) {
/* append lineno as ``, {lineno_as_str}'' */
length += 2 + lineno_length;
}
} else {
if (lineno_as_str) {
/*
* no filename, but have line number,
* need to append ``, "", {lineno_as_str}''
*/
length += 6 + lineno_length;
}
}
cp = chars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar));
if (!chars) {
ok = JS_FALSE;
goto out;
}
*cp++ = '('; *cp++ = 'n'; *cp++ = 'e'; *cp++ = 'w'; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(name), name_length);
cp += name_length;
*cp++ = '(';
if (message_length != 0) {
js_strncpy(cp, JSSTRING_CHARS(message), message_length);
cp += message_length;
}
if (filename_length != 0) {
/* append filename as ``, {filename}'' */
*cp++ = ','; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(filename), filename_length);
cp += filename_length;
} else {
if (lineno_as_str) {
/*
* no filename, but have line number,
* need to append ``, "", {lineno_as_str}''
*/
*cp++ = ','; *cp++ = ' '; *cp++ = '"'; *cp++ = '"';
}
}
if (lineno_as_str) {
/* append lineno as ``, {lineno_as_str}'' */
*cp++ = ','; *cp++ = ' ';
js_strncpy(cp, JSSTRING_CHARS(lineno_as_str), lineno_length);
cp += lineno_length;
}
*cp++ = ')'; *cp++ = ')'; *cp = 0;
result = js_NewString(cx, chars, length);
if (!result) {
JS_free(cx, chars);
ok = JS_FALSE;
goto out;
}
*vp = STRING_TO_JSVAL(result);
ok = JS_TRUE;
out:
JS_POP_TEMP_ROOT(cx, &tvr);
return ok;
}
static JSBool
Exception(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
uint32 lineno;
JSString *message, *filename;
JSStackFrame *fp;
if (!(cx->fp->flags & JSFRAME_CONSTRUCTING)) {
/*
* ECMA ed. 3, 15.11.1 requires Error, etc., to construct even when
* called as functions, without operator new. But as we do not give
* each constructor a distinct JSClass, whose .name member is used by
* js_NewObject to find the class prototype, we must get the class
* prototype ourselves.
*/
if (!OBJ_GET_PROPERTY(cx, JSVAL_TO_OBJECT(argv[-2]),
ATOM_TO_JSID(cx->runtime->atomState
.classPrototypeAtom),
rval))
return JS_FALSE;
obj = js_NewObject(cx, &js_ErrorClass, JSVAL_TO_OBJECT(*rval), NULL, 0);
if (!obj)
return JS_FALSE;
*rval = OBJECT_TO_JSVAL(obj);
}
/*
* If it's a new object of class Exception, then null out the private
* data so that the finalizer doesn't attempt to free it.
*/
if (OBJ_GET_CLASS(cx, obj) == &js_ErrorClass)
STOBJ_SET_SLOT(obj, JSSLOT_PRIVATE, JSVAL_VOID);
/* Set the 'message' property. */
if (argc != 0) {
message = js_ValueToString(cx, argv[0]);
if (!message)
return JS_FALSE;
argv[0] = STRING_TO_JSVAL(message);
} else {
message = cx->runtime->emptyString;
}
/* Set the 'fileName' property. */
if (argc > 1) {
filename = js_ValueToString(cx, argv[1]);
if (!filename)
return JS_FALSE;
argv[1] = STRING_TO_JSVAL(filename);
fp = NULL;
} else {
fp = JS_GetScriptedCaller(cx, NULL);
if (fp) {
filename = FilenameToString(cx, fp->script->filename);
if (!filename)
return JS_FALSE;
} else {
filename = cx->runtime->emptyString;
}
}
/* Set the 'lineNumber' property. */
if (argc > 2) {
lineno = js_ValueToECMAUint32(cx, &argv[2]);
if (JSVAL_IS_NULL(argv[2]))
return JS_FALSE;
} else {
if (!fp)
fp = JS_GetScriptedCaller(cx, NULL);
lineno = (fp && fp->regs)
? js_PCToLineNumber(cx, fp->script, fp->regs->pc)
: 0;
}
return (OBJ_GET_CLASS(cx, obj) != &js_ErrorClass) ||
InitExnPrivate(cx, obj, message, filename, lineno, NULL);
}
static JSBool
CallEnumeratorNext(JSContext *cx, JSObject *iterobj, uintN flags, jsval *rval)
{
JSObject *obj, *origobj;
jsval state;
JSBool foreach;
jsid id;
JSObject *obj2;
JSBool cond;
JSClass *clasp;
JSExtendedClass *xclasp;
JSProperty *prop;
JSString *str;
JS_ASSERT(flags & JSITER_ENUMERATE);
JS_ASSERT(STOBJ_GET_CLASS(iterobj) == &js_IteratorClass);
obj = STOBJ_GET_PARENT(iterobj);
origobj = STOBJ_GET_PROTO(iterobj);
state = STOBJ_GET_SLOT(iterobj, JSSLOT_ITER_STATE);
if (JSVAL_IS_NULL(state))
goto stop;
foreach = (flags & JSITER_FOREACH) != 0;
#if JS_HAS_XML_SUPPORT
/*
* Treat an XML object specially only when it starts the prototype chain.
* Otherwise we need to do the usual deleted and shadowed property checks.
*/
if (obj == origobj && OBJECT_IS_XML(cx, obj)) {
if (foreach) {
JSXMLObjectOps *xmlops = (JSXMLObjectOps *) obj->map->ops;
if (!xmlops->enumerateValues(cx, obj, JSENUMERATE_NEXT, &state,
&id, rval)) {
return JS_FALSE;
}
} else {
if (!OBJ_ENUMERATE(cx, obj, JSENUMERATE_NEXT, &state, &id))
return JS_FALSE;
}
STOBJ_SET_SLOT(iterobj, JSSLOT_ITER_STATE, state);
if (JSVAL_IS_NULL(state))
goto stop;
} else
#endif
{
restart:
if (!OBJ_ENUMERATE(cx, obj, JSENUMERATE_NEXT, &state, &id))
return JS_FALSE;
STOBJ_SET_SLOT(iterobj, JSSLOT_ITER_STATE, state);
if (JSVAL_IS_NULL(state)) {
#if JS_HAS_XML_SUPPORT
if (OBJECT_IS_XML(cx, obj)) {
/*
* We just finished enumerating an XML obj that is present on
* the prototype chain of a non-XML origobj. Stop further
* prototype chain searches because XML objects don't
* enumerate prototypes.
*/
JS_ASSERT(origobj != obj);
JS_ASSERT(!OBJECT_IS_XML(cx, origobj));
} else
#endif
{
obj = OBJ_GET_PROTO(cx, obj);
if (obj) {
STOBJ_SET_PARENT(iterobj, obj);
if (!OBJ_ENUMERATE(cx, obj, JSENUMERATE_INIT, &state, NULL))
return JS_FALSE;
STOBJ_SET_SLOT(iterobj, JSSLOT_ITER_STATE, state);
if (!JSVAL_IS_NULL(state))
goto restart;
}
}
goto stop;
}
/* Skip properties not in obj when looking from origobj. */
if (!OBJ_LOOKUP_PROPERTY(cx, origobj, id, &obj2, &prop))
return JS_FALSE;
if (!prop)
goto restart;
OBJ_DROP_PROPERTY(cx, obj2, prop);
/*
* If the id was found in a prototype object or an unrelated object
* (specifically, not in an inner object for obj), skip it. This step
* means that all OBJ_LOOKUP_PROPERTY implementations must return an
* object further along on the prototype chain, or else possibly an
* object returned by the JSExtendedClass.outerObject optional hook.
*/
if (obj != obj2) {
cond = JS_FALSE;
clasp = OBJ_GET_CLASS(cx, obj2);
if (clasp->flags & JSCLASS_IS_EXTENDED) {
xclasp = (JSExtendedClass *) clasp;
cond = xclasp->outerObject &&
xclasp->outerObject(cx, obj2) == obj;
}
if (!cond)
goto restart;
}
if (foreach) {
/* Get property querying the original object. */
if (!OBJ_GET_PROPERTY(cx, origobj, id, rval))
return JS_FALSE;
}
}
if (foreach) {
if (flags & JSITER_KEYVALUE) {
if (!NewKeyValuePair(cx, id, *rval, rval))
return JS_FALSE;
}
} else {
/* Make rval a string for uniformity and compatibility. */
str = js_ValueToString(cx, ID_TO_VALUE(id));
if (!str)
return JS_FALSE;
*rval = STRING_TO_JSVAL(str);
}
return JS_TRUE;
stop:
JS_ASSERT(STOBJ_GET_SLOT(iterobj, JSSLOT_ITER_STATE) == JSVAL_NULL);
*rval = JSVAL_HOLE;
return JS_TRUE;
}
static JSBool
array_join_sub(JSContext *cx, JSObject *obj, JSString *sep, JSBool literalize,
jsval *rval, JSBool localeString)
{
JSBool ok;
jsval v;
jsuint length, index;
jschar *chars, *ochars;
size_t nchars, growth, seplen, tmplen;
const jschar *sepstr;
JSString *str;
JSHashEntry *he;
JSObject *obj2;
ok = js_GetLengthProperty(cx, obj, &length);
if (!ok)
return JS_FALSE;
he = js_EnterSharpObject(cx, obj, NULL, &chars);
if (!he)
return JS_FALSE;
if (literalize) {
if (IS_SHARP(he)) {
#if JS_HAS_SHARP_VARS
nchars = js_strlen(chars);
#else
chars[0] = '[';
chars[1] = ']';
chars[2] = 0;
nchars = 2;
#endif
goto make_string;
}
/*
* Allocate 1 + 3 + 1 for "[", the worst-case closing ", ]", and the
* terminating 0.
*/
growth = (1 + 3 + 1) * sizeof(jschar);
if (!chars) {
nchars = 0;
chars = (jschar *) malloc(growth);
if (!chars)
goto done;
} else {
MAKE_SHARP(he);
nchars = js_strlen(chars);
chars = (jschar *)
realloc((ochars = chars), nchars * sizeof(jschar) + growth);
if (!chars) {
free(ochars);
goto done;
}
}
chars[nchars++] = '[';
} else {
/*
* Free any sharp variable definition in chars. Normally, we would
* MAKE_SHARP(he) so that only the first sharp variable annotation is
* a definition, and all the rest are references, but in the current
* case of (!literalize), we don't need chars at all.
*/
if (chars)
JS_free(cx, chars);
chars = NULL;
nchars = 0;
/* Return the empty string on a cycle as well as on empty join. */
if (IS_BUSY(he) || length == 0) {
js_LeaveSharpObject(cx, NULL);
*rval = JS_GetEmptyStringValue(cx);
return ok;
}
/* Flag he as BUSY so we can distinguish a cycle from a join-point. */
MAKE_BUSY(he);
}
sepstr = NULL;
seplen = JSSTRING_LENGTH(sep);
v = JSVAL_NULL;
for (index = 0; index < length; index++) {
ok = JS_GetElement(cx, obj, index, &v);
if (!ok)
goto done;
if (!literalize && (JSVAL_IS_VOID(v) || JSVAL_IS_NULL(v))) {
str = cx->runtime->emptyString;
} else {
if (localeString) {
if (!js_ValueToObject(cx, v, &obj2) ||
!js_TryMethod(cx, obj2,
cx->runtime->atomState.toLocaleStringAtom,
0, NULL, &v)) {
str = NULL;
} else {
str = js_ValueToString(cx, v);
}
} else {
str = (literalize ? js_ValueToSource : js_ValueToString)(cx, v);
}
if (!str) {
ok = JS_FALSE;
goto done;
}
}
/* Allocate 3 + 1 at end for ", ", closing bracket, and zero. */
growth = (nchars + (sepstr ? seplen : 0) +
JSSTRING_LENGTH(str) +
3 + 1) * sizeof(jschar);
if (!chars) {
chars = (jschar *) malloc(growth);
if (!chars)
goto done;
} else {
chars = (jschar *) realloc((ochars = chars), growth);
if (!chars) {
free(ochars);
goto done;
}
}
if (sepstr) {
js_strncpy(&chars[nchars], sepstr, seplen);
nchars += seplen;
}
sepstr = JSSTRING_CHARS(sep);
tmplen = JSSTRING_LENGTH(str);
js_strncpy(&chars[nchars], JSSTRING_CHARS(str), tmplen);
nchars += tmplen;
}
done:
if (literalize) {
if (chars) {
if (JSVAL_IS_VOID(v)) {
chars[nchars++] = ',';
chars[nchars++] = ' ';
}
chars[nchars++] = ']';
}
} else {
CLEAR_BUSY(he);
}
js_LeaveSharpObject(cx, NULL);
if (!ok) {
if (chars)
free(chars);
return ok;
}
make_string:
if (!chars) {
JS_ReportOutOfMemory(cx);
return JS_FALSE;
}
chars[nchars] = 0;
str = js_NewString(cx, chars, nchars, 0);
if (!str) {
free(chars);
return JS_FALSE;
}
*rval = STRING_TO_JSVAL(str);
return JS_TRUE;
}
static JSBool
JO(JSContext *cx, jsval *vp, StringifyContext *scx)
{
JSObject *obj = JSVAL_TO_OBJECT(*vp);
if (!scx->cb.append('{'))
return JS_FALSE;
jsval vec[3] = {JSVAL_NULL, JSVAL_NULL, JSVAL_NULL};
JSAutoTempValueRooter tvr(cx, 3, vec);
jsval& key = vec[0];
jsval& outputValue = vec[1];
JSObject *iterObj = NULL;
jsval *keySource = vp;
bool usingWhitelist = false;
// if the replacer is an array, we use the keys from it
if (scx->replacer && JS_IsArrayObject(cx, scx->replacer)) {
usingWhitelist = true;
vec[2] = OBJECT_TO_JSVAL(scx->replacer);
keySource = &vec[2];
}
if (!js_ValueToIterator(cx, JSITER_ENUMERATE, keySource))
return JS_FALSE;
iterObj = JSVAL_TO_OBJECT(*keySource);
JSBool memberWritten = JS_FALSE;
bool ok = false;
while (true) {
outputValue = JSVAL_VOID;
if (!js_CallIteratorNext(cx, iterObj, &key))
goto error_break;
if (key == JSVAL_HOLE)
break;
jsuint index = 0;
if (usingWhitelist) {
// skip non-index properties
if (!js_IdIsIndex(key, &index))
continue;
jsval newKey;
if (!scx->replacer->getProperty(cx, key, &newKey))
goto error_break;
key = newKey;
}
JSString *ks;
if (JSVAL_IS_STRING(key)) {
ks = JSVAL_TO_STRING(key);
} else {
ks = js_ValueToString(cx, key);
if (!ks)
goto error_break;
}
JSAutoTempValueRooter keyStringRoot(cx, ks);
// Don't include prototype properties, since this operation is
// supposed to be implemented as if by ES3.1 Object.keys()
jsid id;
jsval v = JS_FALSE;
if (!js_ValueToStringId(cx, STRING_TO_JSVAL(ks), &id) ||
!js_HasOwnProperty(cx, obj->map->ops->lookupProperty, obj, id, &v)) {
goto error_break;
}
if (v != JSVAL_TRUE)
continue;
if (!JS_GetPropertyById(cx, obj, id, &outputValue))
goto error_break;
if (JSVAL_IS_OBJECT(outputValue) && !js_TryJSON(cx, &outputValue))
goto error_break;
// call this here, so we don't write out keys if the replacer function
// wants to elide the value.
if (!CallReplacerFunction(cx, id, obj, scx, &outputValue))
goto error_break;
JSType type = JS_TypeOfValue(cx, outputValue);
// elide undefined values and functions and XML
if (outputValue == JSVAL_VOID || type == JSTYPE_FUNCTION || type == JSTYPE_XML)
continue;
// output a comma unless this is the first member to write
if (memberWritten && !scx->cb.append(','))
goto error_break;
memberWritten = JS_TRUE;
if (!WriteIndent(cx, scx, scx->depth))
goto error_break;
// Be careful below, this string is weakly rooted
JSString *s = js_ValueToString(cx, key);
if (!s)
goto error_break;
const jschar *chars;
size_t length;
s->getCharsAndLength(chars, length);
if (!write_string(cx, scx->cb, chars, length) ||
!scx->cb.append(':') ||
!Str(cx, id, obj, scx, &outputValue, false)) {
goto error_break;
}
}
ok = true;
error_break:
if (iterObj) {
// Always close the iterator, but make sure not to stomp on OK
JS_ASSERT(OBJECT_TO_JSVAL(iterObj) == *keySource);
ok &= js_CloseIterator(cx, *keySource);
}
if (!ok)
return JS_FALSE;
if (memberWritten && !WriteIndent(cx, scx, scx->depth - 1))
return JS_FALSE;
return scx->cb.append('}');
}
JSBool
js_ReportUncaughtException(JSContext *cx)
{
jsval exn, *vp;
JSObject *exnObject;
void *mark;
JSErrorReport *reportp, report;
JSString *str;
const char *bytes;
JSBool ok;
if (!JS_IsExceptionPending(cx))
return JS_TRUE;
if (!JS_GetPendingException(cx, &exn))
return JS_FALSE;
/*
* Because js_ValueToString below could error and an exception object
* could become unrooted, we must root exnObject. Later, if exnObject is
* non-null, we need to root other intermediates, so allocate an operand
* stack segment to protect all of these values.
*/
if (JSVAL_IS_PRIMITIVE(exn)) {
exnObject = NULL;
vp = NULL;
#ifdef __GNUC__ /* suppress bogus gcc warnings */
mark = NULL;
#endif
} else {
exnObject = JSVAL_TO_OBJECT(exn);
vp = js_AllocStack(cx, 5, &mark);
if (!vp) {
ok = JS_FALSE;
goto out;
}
vp[0] = exn;
}
#if JS_HAS_ERROR_EXCEPTIONS
reportp = js_ErrorFromException(cx, exn);
#else
reportp = NULL;
#endif
/* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
str = js_ValueToString(cx, exn);
if (!str) {
bytes = "unknown (can't convert to string)";
} else {
if (vp)
vp[1] = STRING_TO_JSVAL(str);
bytes = js_GetStringBytes(str);
}
ok = JS_TRUE;
if (!reportp &&
exnObject &&
OBJ_GET_CLASS(cx, exnObject) == &ExceptionClass) {
const char *filename;
uint32 lineno;
ok = JS_GetProperty(cx, exnObject, js_message_str, &vp[2]);
if (!ok)
goto out;
if (JSVAL_IS_STRING(vp[2]))
bytes = JS_GetStringBytes(JSVAL_TO_STRING(vp[2]));
ok = JS_GetProperty(cx, exnObject, js_filename_str, &vp[3]);
if (!ok)
goto out;
str = js_ValueToString(cx, vp[3]);
if (!str) {
ok = JS_FALSE;
goto out;
}
filename = StringToFilename(cx, str);
ok = JS_GetProperty(cx, exnObject, js_lineno_str, &vp[4]);
if (!ok)
goto out;
ok = js_ValueToECMAUint32 (cx, vp[4], &lineno);
if (!ok)
goto out;
reportp = &report;
memset(&report, 0, sizeof report);
report.filename = filename;
report.lineno = (uintN) lineno;
}
if (!reportp) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNCAUGHT_EXCEPTION, bytes);
} else {
/* Flag the error as an exception. */
reportp->flags |= JSREPORT_EXCEPTION;
js_ReportErrorAgain(cx, bytes, reportp);
}
JS_ClearPendingException(cx);
out:
if (exnObject)
js_FreeStack(cx, mark);
return ok;
}
JSBool
js_obj_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *rval)
{
jschar *chars;
size_t nchars;
char *clazz, *prefix;
JSString *str;
#if JS_HAS_OBJECT_LITERAL
if (cx->version >= JSVERSION_1_2) {
JSProperty *list, *prop;
JSBool ok;
char *comma, *idquote, *valquote;
jsval id, val;
JSString *idstr, *valstr;
#if JS_HAS_SHARP_VARS
PRHashEntry *he;
#endif
/* Early returns after this must unlock, or goto done with ok set. */
JS_LOCK(cx);
list = obj->map->props;
#if JS_HAS_SHARP_VARS
he = js_EnterSharpObject(cx, obj, &chars);
if (!he) {
JS_UNLOCK(cx);
return JS_FALSE;
}
if (IS_SHARP(he)) { /* we didn't enter -- obj is already sharp */
JS_UNLOCK(cx);
nchars = js_strlen(chars);
goto make_string;
}
MAKE_SHARP(he);
#else
/* Shut off recursion by temporarily clearing obj's property list. */
obj->map->props = NULL;
chars = NULL;
#endif
ok = JS_TRUE;
/* Allocate 2 + 1 for "{}" and the terminator. */
if (!chars) {
chars = malloc((2 + 1) * sizeof(jschar));
nchars = 0;
} else {
nchars = js_strlen(chars);
chars = realloc(chars, (nchars + 2 + 1) * sizeof(jschar));
}
if (!chars)
goto done;
chars[nchars++] = '{';
comma = NULL;
for (prop = list; prop; prop = prop->next) {
if (!prop->symbols || !(prop->flags & JSPROP_ENUMERATE))
continue;
/* Get strings for id and val and GC-root them via argv. */
id = js_IdToValue(sym_id(prop->symbols));
idstr = js_ValueToString(cx, id);
if (idstr)
argv[0] = STRING_TO_JSVAL(idstr);
val = prop->object->slots[prop->slot];
valstr = js_ValueToString(cx, val);
if (!idstr || !valstr) {
ok = JS_FALSE;
goto done;
}
argv[1] = STRING_TO_JSVAL(valstr);
/* If id is a non-identifier string, it needs to be quoted. */
if (JSVAL_IS_STRING(id) && !js_IsIdentifier(idstr)) {
idquote = "'";
idstr = js_EscapeString(cx, idstr, *idquote);
if (!idstr) {
ok = JS_FALSE;
goto done;
}
argv[0] = STRING_TO_JSVAL(idstr);
} else {
idquote = NULL;
}
/* Same for val, except it can't be an identifier. */
if (JSVAL_IS_STRING(val)) {
valquote = "\"";
valstr = js_EscapeString(cx, valstr, *valquote);
if (!valstr) {
ok = JS_FALSE;
goto done;
}
argv[1] = STRING_TO_JSVAL(valstr);
} else {
valquote = NULL;
}
/* Allocate 1 + 1 at end for closing brace and terminating 0. */
chars = realloc(chars,
(nchars + (comma ? 2 : 0) +
(idquote ? 2 : 0) + idstr->length + 1 +
(valquote ? 2 : 0) + valstr->length +
1 + 1) * sizeof(jschar));
if (!chars)
goto done;
if (comma) {
chars[nchars++] = comma[0];
chars[nchars++] = comma[1];
}
comma = ", ";
if (idquote)
chars[nchars++] = *idquote;
js_strncpy(&chars[nchars], idstr->chars, idstr->length);
nchars += idstr->length;
if (idquote)
chars[nchars++] = *idquote;
chars[nchars++] = ':';
if (valquote)
chars[nchars++] = *valquote;
js_strncpy(&chars[nchars], valstr->chars, valstr->length);
nchars += valstr->length;
if (valquote)
chars[nchars++] = *valquote;
}
done:
if (chars) {
chars[nchars++] = '}';
chars[nchars] = 0;
}
#if JS_HAS_SHARP_VARS
js_LeaveSharpObject(cx);
#else
/* Restore obj's property list before bailing on error. */
obj->map->props = list;
#endif
JS_UNLOCK(cx);
if (!ok) {
if (chars)
free(chars);
return ok;
}
} else
#endif /* JS_HAS_OBJECT_LITERAL */
{
clazz = obj->map->clasp->name;
nchars = 9 + strlen(clazz); /* 9 for "[object ]" */
chars = malloc((nchars + 1) * sizeof(jschar));
if (chars) {
prefix = "[object ";
nchars = 0;
while ((chars[nchars] = (jschar)*prefix) != 0)
nchars++, prefix++;
while ((chars[nchars] = (jschar)*clazz) != 0)
nchars++, clazz++;
chars[nchars++] = ']';
chars[nchars] = 0;
}
}
#if JS_HAS_SHARP_VARS
make_string:
#endif
if (!chars) {
JS_ReportOutOfMemory(cx);
return JS_FALSE;
}
str = js_NewString(cx, chars, nchars, 0);
if (!str) {
free(chars);
return JS_FALSE;
}
*rval = STRING_TO_JSVAL(str);
return JS_TRUE;
}
JSBool
js_ReportUncaughtException(JSContext *cx)
{
jsval exn;
JSObject *exnObject;
jsval roots[5];
JSTempValueRooter tvr;
JSErrorReport *reportp, report;
JSString *str;
const char *bytes;
JSBool ok;
if (!JS_IsExceptionPending(cx))
return JS_TRUE;
if (!JS_GetPendingException(cx, &exn))
return JS_FALSE;
memset(roots, 0, sizeof roots);
JS_PUSH_TEMP_ROOT(cx, JS_ARRAY_LENGTH(roots), roots, &tvr);
/*
* Because js_ValueToString below could error and an exception object
* could become unrooted, we must root exnObject. Later, if exnObject is
* non-null, we need to root other intermediates, so allocate an operand
* stack segment to protect all of these values.
*/
if (JSVAL_IS_PRIMITIVE(exn)) {
exnObject = NULL;
} else {
exnObject = JSVAL_TO_OBJECT(exn);
roots[0] = exn;
}
JS_ClearPendingException(cx);
reportp = js_ErrorFromException(cx, exn);
/* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
str = js_ValueToString(cx, exn);
if (!str) {
bytes = "unknown (can't convert to string)";
} else {
roots[1] = STRING_TO_JSVAL(str);
bytes = js_GetStringBytes(cx, str);
if (!bytes) {
ok = JS_FALSE;
goto out;
}
}
ok = JS_TRUE;
if (!reportp &&
exnObject &&
OBJ_GET_CLASS(cx, exnObject) == &js_ErrorClass) {
const char *filename;
uint32 lineno;
ok = JS_GetProperty(cx, exnObject, js_message_str, &roots[2]);
if (!ok)
goto out;
if (JSVAL_IS_STRING(roots[2])) {
bytes = js_GetStringBytes(cx, JSVAL_TO_STRING(roots[2]));
if (!bytes) {
ok = JS_FALSE;
goto out;
}
}
ok = JS_GetProperty(cx, exnObject, js_fileName_str, &roots[3]);
if (!ok)
goto out;
str = js_ValueToString(cx, roots[3]);
if (!str) {
ok = JS_FALSE;
goto out;
}
filename = StringToFilename(cx, str);
if (!filename) {
ok = JS_FALSE;
goto out;
}
ok = JS_GetProperty(cx, exnObject, js_lineNumber_str, &roots[4]);
if (!ok)
goto out;
lineno = js_ValueToECMAUint32 (cx, &roots[4]);
ok = !JSVAL_IS_NULL(roots[4]);
if (!ok)
goto out;
reportp = &report;
memset(&report, 0, sizeof report);
report.filename = filename;
report.lineno = (uintN) lineno;
}
if (!reportp) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNCAUGHT_EXCEPTION, bytes);
} else {
/* Flag the error as an exception. */
reportp->flags |= JSREPORT_EXCEPTION;
/* Pass the exception object. */
JS_SetPendingException(cx, exn);
js_ReportErrorAgain(cx, bytes, reportp);
JS_ClearPendingException(cx);
}
out:
JS_POP_TEMP_ROOT(cx, &tvr);
return ok;
}
JSBool
js_Stringify(JSContext *cx, jsval *vp, JSObject *replacer,
JSONWriteCallback callback, void *data, uint32 depth)
{
if (depth > JSON_MAX_DEPTH)
return JS_FALSE; /* encoding error */
JSBool ok = JS_TRUE;
JSObject *obj = JSVAL_TO_OBJECT(*vp);
JSBool isArray = JS_IsArrayObject(cx, obj);
jschar output = jschar(isArray ? '[' : '{');
if (!callback(&output, 1, data))
return JS_FALSE;
JSObject *iterObj = NULL;
jsint i = 0;
jsuint length = 0;
if (isArray) {
if (!js_GetLengthProperty(cx, obj, &length))
return JS_FALSE;
} else {
if (!js_ValueToIterator(cx, JSITER_ENUMERATE, vp))
return JS_FALSE;
iterObj = JSVAL_TO_OBJECT(*vp);
}
jsval outputValue = JSVAL_VOID;
JSAutoTempValueRooter tvr(cx, 1, &outputValue);
jsval key;
JSBool memberWritten = JS_FALSE;
do {
outputValue = JSVAL_VOID;
if (isArray) {
if ((jsuint)i >= length)
break;
ok = OBJ_GET_PROPERTY(cx, obj, INT_TO_JSID(i), &outputValue);
i++;
} else {
ok = js_CallIteratorNext(cx, iterObj, &key);
if (!ok)
break;
if (key == JSVAL_HOLE)
break;
JSString *ks;
if (JSVAL_IS_STRING(key)) {
ks = JSVAL_TO_STRING(key);
} else {
ks = js_ValueToString(cx, key);
if (!ks) {
ok = JS_FALSE;
break;
}
}
ok = JS_GetUCProperty(cx, obj, JS_GetStringChars(ks),
JS_GetStringLength(ks), &outputValue);
}
if (!ok)
break;
// if this is an array, holes are transmitted as null
if (isArray && outputValue == JSVAL_VOID) {
outputValue = JSVAL_NULL;
} else if (JSVAL_IS_OBJECT(outputValue)) {
ok = js_TryJSON(cx, &outputValue);
if (!ok)
break;
}
// elide undefined values
if (outputValue == JSVAL_VOID)
continue;
// output a comma unless this is the first member to write
if (memberWritten) {
output = jschar(',');
ok = callback(&output, 1, data);
if (!ok)
break;
}
memberWritten = JS_TRUE;
JSType type = JS_TypeOfValue(cx, outputValue);
// Can't encode these types, so drop them
if (type == JSTYPE_FUNCTION || type == JSTYPE_XML)
break;
// Be careful below, this string is weakly rooted.
JSString *s;
// If this isn't an array, we need to output a key
if (!isArray) {
s = js_ValueToString(cx, key);
if (!s) {
ok = JS_FALSE;
break;
}
ok = write_string(cx, callback, data, JS_GetStringChars(s), JS_GetStringLength(s));
if (!ok)
break;
output = jschar(':');
ok = callback(&output, 1, data);
if (!ok)
break;
}
if (!JSVAL_IS_PRIMITIVE(outputValue)) {
// recurse
ok = js_Stringify(cx, &outputValue, replacer, callback, data, depth + 1);
} else {
JSString *outputString;
s = js_ValueToString(cx, outputValue);
if (!s) {
ok = JS_FALSE;
break;
}
if (type == JSTYPE_STRING) {
ok = write_string(cx, callback, data, JS_GetStringChars(s), JS_GetStringLength(s));
if (!ok)
break;
continue;
}
if (type == JSTYPE_NUMBER) {
if (JSVAL_IS_DOUBLE(outputValue)) {
jsdouble d = *JSVAL_TO_DOUBLE(outputValue);
if (!JSDOUBLE_IS_FINITE(d))
outputString = JS_NewStringCopyN(cx, "null", 4);
else
outputString = s;
} else {
outputString = s;
}
} else if (type == JSTYPE_BOOLEAN) {
outputString = s;
} else if (JSVAL_IS_NULL(outputValue)) {
outputString = JS_NewStringCopyN(cx, "null", 4);
} else {
ok = JS_FALSE; // encoding error
break;
}
if (!outputString) {
ok = JS_FALSE;
break;
}
ok = callback(JS_GetStringChars(outputString), JS_GetStringLength(outputString), data);
}
} while (ok);
if (iterObj) {
// Always close the iterator, but make sure not to stomp on OK
ok &= js_CloseIterator(cx, *vp);
// encoding error or propagate? FIXME: Bug 408838.
}
if (!ok) {
JS_ReportError(cx, "Error during JSON encoding");
return JS_FALSE;
}
output = jschar(isArray ? ']' : '}');
ok = callback(&output, 1, data);
return ok;
}
