/*
* 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, uintN argc, jsval *vp)
{
JSObject *obj;
jsval v;
JSString *name, *message, *result;
jschar *chars, *cp;
size_t name_length, message_length, length;
obj = JS_THIS_OBJECT(cx, vp);
if (!obj ||
!OBJ_GET_PROPERTY(cx, obj,
ATOM_TO_JSID(cx->runtime->atomState.nameAtom),
&v)) {
return JS_FALSE;
}
name = JSVAL_IS_STRING(v) ? JSVAL_TO_STRING(v) : cx->runtime->emptyString;
*vp = STRING_TO_JSVAL(name);
if (!JS_GetProperty(cx, obj, js_message_str, &v))
return JS_FALSE;
message = JSVAL_IS_STRING(v) ? JSVAL_TO_STRING(v)
: cx->runtime->emptyString;
if (JSSTRING_LENGTH(message) != 0) {
name_length = JSSTRING_LENGTH(name);
message_length = JSSTRING_LENGTH(message);
length = (name_length ? name_length + 2 : 0) + message_length;
cp = chars = (jschar *) JS_malloc(cx, (length + 1) * sizeof(jschar));
if (!chars)
return JS_FALSE;
if (name_length) {
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);
if (!result) {
JS_free(cx, chars);
return JS_FALSE;
}
} else {
result = name;
}
*vp = STRING_TO_JSVAL(result);
return JS_TRUE;
}
JS_XDRString(JSXDRState *xdr, JSString **strp)
{
uint32 nchars;
jschar *chars;
if (xdr->mode == JSXDR_ENCODE)
nchars = JSSTRING_LENGTH(*strp);
if (!JS_XDRUint32(xdr, &nchars))
return JS_FALSE;
if (xdr->mode == JSXDR_DECODE) {
chars = (jschar *) JS_malloc(xdr->cx, (nchars + 1) * sizeof(jschar));
if (!chars)
return JS_FALSE;
} else {
chars = JSSTRING_CHARS(*strp);
}
if (!XDRChars(xdr, chars, nchars))
goto bad;
if (xdr->mode == JSXDR_DECODE) {
chars[nchars] = 0;
*strp = JS_NewUCString(xdr->cx, chars, nchars);
if (!*strp)
goto bad;
}
return JS_TRUE;
bad:
if (xdr->mode == JSXDR_DECODE)
JS_free(xdr->cx, chars);
return JS_FALSE;
}
/*
* 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;
}
JS_XDRString(JSXDRState *xdr, JSString **strp)
{
uint32 i, len, padlen, nbytes;
jschar *chars = NULL, *raw;
if (xdr->mode == JSXDR_ENCODE)
len = JSSTRING_LENGTH(*strp);
if (!JS_XDRUint32(xdr, &len))
return JS_FALSE;
nbytes = len * sizeof(jschar);
if (xdr->mode == JSXDR_DECODE) {
if (!(chars = (jschar *) JS_malloc(xdr->cx, nbytes + sizeof(jschar))))
return JS_FALSE;
} else {
chars = JSSTRING_CHARS(*strp);
}
padlen = nbytes % JSXDR_ALIGN;
if (padlen) {
padlen = JSXDR_ALIGN - padlen;
nbytes += padlen;
}
if (!(raw = (jschar *) xdr->ops->raw(xdr, nbytes)))
goto bad;
if (xdr->mode == JSXDR_ENCODE) {
for (i = 0; i < len; i++)
raw[i] = JSXDR_SWAB16(chars[i]);
if (padlen)
memset((char *)raw + nbytes - padlen, 0, padlen);
} else if (xdr->mode == JSXDR_DECODE) {
for (i = 0; i < len; i++)
chars[i] = JSXDR_SWAB16(raw[i]);
chars[len] = 0;
if (!(*strp = JS_NewUCString(xdr->cx, chars, len)))
goto bad;
}
return JS_TRUE;
bad:
if (xdr->mode == JSXDR_DECODE)
JS_free(xdr->cx, chars);
return JS_FALSE;
}
/*
* Determine if the id represents an array index.
*
* An id is an array index according to ECMA by (15.4):
*
* "Array objects give special treatment to a certain class of property names.
* A property name P (in the form of a string value) is an array index if and
* only if ToString(ToUint32(P)) is equal to P and ToUint32(P) is not equal
* to 2^32-1."
*
* In our implementation, it would be sufficient to check for JSVAL_IS_INT(id)
* except that by using signed 32-bit integers we miss the top half of the
* valid range. This function checks the string representation itself; note
* that calling a standard conversion routine might allow strings such as
* "08" or "4.0" as array indices, which they are not.
*/
static JSBool
IdIsIndex(jsid id, jsuint *indexp)
{
JSString *str;
jschar *cp;
if (JSVAL_IS_INT(id)) {
jsint i;
i = JSVAL_TO_INT(id);
if (i < 0)
return JS_FALSE;
*indexp = (jsuint)i;
return JS_TRUE;
}
/* It must be a string. */
str = JSVAL_TO_STRING(id);
cp = JSSTRING_CHARS(str);
if (JS7_ISDEC(*cp) && JSSTRING_LENGTH(str) < sizeof(MAXSTR)) {
jsuint index = JS7_UNDEC(*cp++);
jsuint oldIndex = 0;
jsuint c = 0;
if (index != 0) {
while (JS7_ISDEC(*cp)) {
oldIndex = index;
c = JS7_UNDEC(*cp);
index = 10*index + c;
cp++;
}
}
/* Make sure all characters were consumed and that it couldn't
* have overflowed.
*/
if (*cp == 0 &&
(oldIndex < (MAXINDEX / 10) ||
(oldIndex == (MAXINDEX / 10) && c < (MAXINDEX % 10))))
{
*indexp = index;
return JS_TRUE;
}
}
return JS_FALSE;
}
/*
* 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;
}
/*
* 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
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;
}
