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authorBob Jamison <ishmalius@gmail.com>2006-01-16 09:50:17 +0000
committerishmal <ishmal@users.sourceforge.net>2006-01-16 09:50:17 +0000
commit2d00762bebfb3257161115add4805a57aef25bde (patch)
tree2e5dfe871d77655fd43912917160602c9ec83e3c /src/extension/script/js/jsarray.c
parent* src/svg/Makefile_insert: Updated to reflect a previous header (diff)
downloadinkscape-2d00762bebfb3257161115add4805a57aef25bde.tar.gz
inkscape-2d00762bebfb3257161115add4805a57aef25bde.zip
Remove duplicate Javascript tree. This dupe was probably an artifact of the migration.
(bzr r3)
Diffstat (limited to 'src/extension/script/js/jsarray.c')
-rw-r--r--src/extension/script/js/jsarray.c1429
1 files changed, 0 insertions, 1429 deletions
diff --git a/src/extension/script/js/jsarray.c b/src/extension/script/js/jsarray.c
deleted file mode 100644
index 250c67557..000000000
--- a/src/extension/script/js/jsarray.c
+++ /dev/null
@@ -1,1429 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-/*
- * JS array class.
- */
-#include "jsstddef.h"
-#include <stdlib.h>
-#include <string.h>
-#include "jstypes.h"
-#include "jsutil.h" /* Added by JSIFY */
-#include "jsapi.h"
-#include "jsarray.h"
-#include "jsatom.h"
-#include "jscntxt.h"
-#include "jsconfig.h"
-#include "jsfun.h"
-#include "jsgc.h"
-#include "jsinterp.h"
-#include "jslock.h"
-#include "jsnum.h"
-#include "jsobj.h"
-#include "jsstr.h"
-
-/* 2^32 - 1 as a number and a string */
-#define MAXINDEX 4294967295u
-#define MAXSTR "4294967295"
-
-/*
- * 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;
-}
-
-static JSBool
-ValueIsLength(JSContext *cx, jsval v, jsuint *lengthp)
-{
- jsint i;
- jsdouble d;
-
- if (JSVAL_IS_INT(v)) {
- i = JSVAL_TO_INT(v);
- if (i < 0) {
- JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
- JSMSG_BAD_ARRAY_LENGTH);
- return JS_FALSE;
- }
- *lengthp = (jsuint) i;
- return JS_TRUE;
- }
-
- if (!js_ValueToNumber(cx, v, &d)) {
- JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
- JSMSG_BAD_ARRAY_LENGTH);
- return JS_FALSE;
- }
- if (!js_DoubleToECMAUint32(cx, d, (uint32 *)lengthp)) {
- JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
- JSMSG_BAD_ARRAY_LENGTH);
- return JS_FALSE;
- }
- if (JSDOUBLE_IS_NaN(d) || d != *lengthp) {
- JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
- JSMSG_BAD_ARRAY_LENGTH);
- return JS_FALSE;
- }
- return JS_TRUE;
-}
-
-JSBool
-js_GetLengthProperty(JSContext *cx, JSObject *obj, jsuint *lengthp)
-{
- jsid id;
- jsint i;
- jsval v;
-
- id = (jsid) cx->runtime->atomState.lengthAtom;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
-
- /* Short-circuit, because js_ValueToECMAUint32 fails when
- * called during init time.
- */
- if (JSVAL_IS_INT(v)) {
- i = JSVAL_TO_INT(v);
- /* jsuint cast does ToUint32. */
- *lengthp = (jsuint)i;
- return JS_TRUE;
- }
- return js_ValueToECMAUint32(cx, v, (uint32 *)lengthp);
-}
-
-static JSBool
-IndexToValue(JSContext *cx, jsuint length, jsval *vp)
-{
- if (length <= JSVAL_INT_MAX) {
- *vp = INT_TO_JSVAL(length);
- return JS_TRUE;
- }
- return js_NewDoubleValue(cx, (jsdouble)length, vp);
-}
-
-static JSBool
-IndexToId(JSContext *cx, jsuint length, jsid *idp)
-{
- JSString *str;
- JSAtom *atom;
-
- if (length <= JSVAL_INT_MAX) {
- *idp = (jsid) INT_TO_JSVAL(length);
- } else {
- str = js_NumberToString(cx, (jsdouble)length);
- if (!str)
- return JS_FALSE;
- atom = js_AtomizeString(cx, str, 0);
- if (!atom)
- return JS_FALSE;
- *idp = (jsid)atom;
-
- }
- return JS_TRUE;
-}
-
-JSBool
-js_SetLengthProperty(JSContext *cx, JSObject *obj, jsuint length)
-{
- jsval v;
- jsid id;
-
- if (!IndexToValue(cx, length, &v))
- return JS_FALSE;
- id = (jsid) cx->runtime->atomState.lengthAtom;
- return OBJ_SET_PROPERTY(cx, obj, id, &v);
-}
-
-JSBool
-js_HasLengthProperty(JSContext *cx, JSObject *obj, jsuint *lengthp)
-{
- JSErrorReporter older;
- jsid id;
- JSBool ok;
- jsval v;
-
- older = JS_SetErrorReporter(cx, NULL);
- id = (jsid) cx->runtime->atomState.lengthAtom;
- ok = OBJ_GET_PROPERTY(cx, obj, id, &v);
- JS_SetErrorReporter(cx, older);
- if (!ok)
- return JS_FALSE;
- return ValueIsLength(cx, v, lengthp);
-}
-
-/*
- * This get function is specific to Array.prototype.length and other array
- * instance length properties. It calls back through the class get function
- * in case some magic happens there (see call_getProperty in jsfun.c).
- */
-static JSBool
-array_length_getter(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
-{
- return OBJ_GET_CLASS(cx, obj)->getProperty(cx, obj, id, vp);
-}
-
-static JSBool
-array_length_setter(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
-{
- jsuint newlen, oldlen, slot;
- jsid id2;
- jsval junk;
-
- if (!ValueIsLength(cx, *vp, &newlen))
- return JS_FALSE;
- if (!js_GetLengthProperty(cx, obj, &oldlen))
- return JS_FALSE;
- slot = oldlen;
- while (slot > newlen) {
- --slot;
- if (!IndexToId(cx, slot, &id2))
- return JS_FALSE;
- if (!OBJ_DELETE_PROPERTY(cx, obj, id2, &junk))
- return JS_FALSE;
- }
- return IndexToValue(cx, newlen, vp);
-}
-
-static JSBool
-array_addProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
-{
- jsuint index, length;
-
- if (!(IdIsIndex(id, &index)))
- return JS_TRUE;
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
- if (index >= length) {
- length = index + 1;
- return js_SetLengthProperty(cx, obj, length);
- }
- return JS_TRUE;
-}
-
-static JSBool
-array_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
-{
- jsuint length;
-
- if (cx->version == JSVERSION_1_2) {
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
- switch (type) {
- case JSTYPE_NUMBER:
- return IndexToValue(cx, length, vp);
- case JSTYPE_BOOLEAN:
- *vp = BOOLEAN_TO_JSVAL(length > 0);
- return JS_TRUE;
- default:
- return JS_TRUE;
- }
- }
- return js_TryValueOf(cx, obj, type, vp);
-}
-
-JSClass js_ArrayClass = {
- "Array",
- 0,
- array_addProperty, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
- JS_EnumerateStub, JS_ResolveStub, array_convert, JS_FinalizeStub,
- JSCLASS_NO_OPTIONAL_MEMBERS
-};
-
-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;
- ok = JS_TRUE;
-
- 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 (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 jschar comma_space_ucstr[] = {',', ' ', 0};
-static jschar comma_ucstr[] = {',', 0};
-static JSString comma_space = {2, comma_space_ucstr};
-static JSString comma = {1, comma_ucstr};
-
-#if JS_HAS_TOSOURCE
-static JSBool
-array_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
- jsval *rval)
-{
- return array_join_sub(cx, obj, &comma_space, JS_TRUE, rval, JS_FALSE);
-}
-#endif
-
-static JSBool
-array_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
- jsval *rval)
-{
- JSBool literalize;
-
- /*
- * JS1.2 arrays convert to array literals, with a comma followed by a space
- * between each element.
- */
- literalize = (cx->version == JSVERSION_1_2);
- return array_join_sub(cx, obj, literalize ? &comma_space : &comma,
- literalize, rval, JS_FALSE);
-}
-
-static JSBool
-array_toLocaleString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
- jsval *rval)
-{
- /*
- * Passing comma here as the separator. Need a way to get a
- * locale-specific version.
- */
- return array_join_sub(cx, obj, &comma, JS_FALSE, rval, JS_TRUE);
-}
-
-static JSBool
-InitArrayElements(JSContext *cx, JSObject *obj, jsuint length, jsval *vector)
-{
- jsuint index;
- jsid id;
-
- for (index = 0; index < length; index++) {
- if (!IndexToId(cx, index, &id))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id, &vector[index]))
- return JS_FALSE;
- }
- return JS_TRUE;
-}
-
-static JSBool
-InitArrayObject(JSContext *cx, JSObject *obj, jsuint length, jsval *vector)
-{
- jsval v;
- jsid id;
-
- if (!IndexToValue(cx, length, &v))
- return JS_FALSE;
- id = (jsid) cx->runtime->atomState.lengthAtom;
- if (!OBJ_DEFINE_PROPERTY(cx, obj, id, v,
- array_length_getter, array_length_setter,
- JSPROP_PERMANENT,
- NULL)) {
- return JS_FALSE;
- }
- if (!vector)
- return JS_TRUE;
- return InitArrayElements(cx, obj, length, vector);
-}
-
-#if JS_HAS_SOME_PERL_FUN
-/*
- * 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
-array_reverse(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
- jsval *rval)
-{
- jsuint len, half, i;
- jsid id, id2;
- jsval v, v2;
-
- if (!js_GetLengthProperty(cx, obj, &len))
- return JS_FALSE;
-
- half = len / 2;
- for (i = 0; i < half; i++) {
- if (!IndexToId(cx, i, &id))
- return JS_FALSE;
- if (!IndexToId(cx, len - i - 1, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id2, &v2))
- return JS_FALSE;
-
-#if JS_HAS_SPARSE_ARRAYS
- /* This part isn't done yet. */
-
- if (!OBJ_LOOKUP_PROPERTY(cx, obj, id, &obj2, &prop))
- return JS_FALSE;
- if (!prop) {
- OBJ_DELETE_PROPERTY(cx, obj, id2, &v); /* v is junk. */
- continue;
- }
- OBJ_DROP_PROPERTY(cx, obj2, prop);
-#endif
-
- if (!OBJ_SET_PROPERTY(cx, obj, id, &v2))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id2, &v))
- return JS_FALSE;
- }
-
- *rval = OBJECT_TO_JSVAL(obj);
- return JS_TRUE;
-}
-
-typedef struct HSortArgs {
- void *vec;
- size_t elsize;
- void *pivot;
- JSComparator cmp;
- void *arg;
- JSBool fastcopy;
-} HSortArgs;
-
-static int
-sort_compare(const void *a, const void *b, void *arg);
-
-static int
-sort_compare_strings(const void *a, const void *b, void *arg);
-
-static void
-HeapSortHelper(JSBool building, HSortArgs *hsa, size_t lo, size_t hi)
-{
- void *pivot, *vec, *vec2, *arg, *a, *b;
- size_t elsize;
- JSComparator cmp;
- JSBool fastcopy;
- size_t j, hiDiv2;
-
- pivot = hsa->pivot;
- vec = hsa->vec;
- elsize = hsa->elsize;
- vec2 = (char *)vec - 2 * elsize;
- cmp = hsa->cmp;
- arg = hsa->arg;
-
- fastcopy = hsa->fastcopy;
-#define MEMCPY(p,q,n) \
- (fastcopy ? (void)(*(jsval*)(p) = *(jsval*)(q)) : (void)memcpy(p, q, n))
-
- if (lo == 1) {
- j = 2;
- b = (char *)vec + elsize;
- if (j < hi && cmp(vec, b, arg) < 0)
- j++;
- a = (char *)vec + (hi - 1) * elsize;
- b = (char *)vec2 + j * elsize;
-
- /*
- * During sorting phase b points to a member of heap that cannot be
- * bigger then biggest of vec[0] and vec[1], and cmp(a, b, arg) <= 0
- * always holds.
- */
- if ((building || hi == 2) && cmp(a, b, arg) >= 0)
- return;
-
- MEMCPY(pivot, a, elsize);
- MEMCPY(a, b, elsize);
- lo = j;
- } else {
- a = (char *)vec2 + lo * elsize;
- MEMCPY(pivot, a, elsize);
- }
-
- hiDiv2 = hi/2;
- while (lo <= hiDiv2) {
- j = lo + lo;
- a = (char *)vec2 + j * elsize;
- b = (char *)vec + (j - 1) * elsize;
- if (j < hi && cmp(a, b, arg) < 0)
- j++;
- b = (char *)vec2 + j * elsize;
- if (cmp(pivot, b, arg) >= 0)
- break;
-
- a = (char *)vec2 + lo * elsize;
- MEMCPY(a, b, elsize);
- lo = j;
- }
-
- a = (char *)vec2 + lo * elsize;
- MEMCPY(a, pivot, elsize);
-#undef MEMCPY
-}
-
-JSBool
-js_HeapSort(void *vec, size_t nel, size_t elsize, JSComparator cmp, void *arg)
-{
- void *pivot;
- HSortArgs hsa;
- size_t i;
-
- pivot = malloc(elsize);
- if (!pivot)
- return JS_FALSE;
- hsa.vec = vec;
- hsa.elsize = elsize;
- hsa.pivot = pivot;
- hsa.cmp = cmp;
- hsa.arg = arg;
- hsa.fastcopy = (cmp == sort_compare || cmp == sort_compare_strings);
-
- for (i = nel/2; i != 0; i--)
- HeapSortHelper(JS_TRUE, &hsa, i, nel);
- while (nel > 2)
- HeapSortHelper(JS_FALSE, &hsa, 1, --nel);
-
- free(pivot);
- return JS_TRUE;
-}
-
-typedef struct CompareArgs {
- JSContext *context;
- jsval fval;
- JSBool status;
-} CompareArgs;
-
-static int
-sort_compare(const void *a, const void *b, void *arg)
-{
- jsval av = *(const jsval *)a, bv = *(const jsval *)b;
- CompareArgs *ca = (CompareArgs *) arg;
- JSContext *cx = ca->context;
- jsdouble cmp = -1;
- jsval fval, argv[2], rval;
- JSBool ok;
-
- fval = ca->fval;
- if (fval == JSVAL_NULL) {
- JSString *astr, *bstr;
-
- if (av == bv) {
- cmp = 0;
- } else if (av == JSVAL_VOID || bv == JSVAL_VOID) {
- /* Put undefined properties at the end. */
- cmp = (av == JSVAL_VOID) ? 1 : -1;
- } else if ((astr = js_ValueToString(cx, av)) != NULL &&
- (bstr = js_ValueToString(cx, bv)) != NULL) {
- cmp = js_CompareStrings(astr, bstr);
- } else {
- ca->status = JS_FALSE;
- }
- } else {
- argv[0] = av;
- argv[1] = bv;
- ok = js_InternalCall(cx,
- OBJ_GET_PARENT(cx, JSVAL_TO_OBJECT(fval)),
- fval, 2, argv, &rval);
- if (ok) {
- ok = js_ValueToNumber(cx, rval, &cmp);
- /* Clamp cmp to -1, 0, 1. */
- if (JSDOUBLE_IS_NaN(cmp)) {
- /* XXX report some kind of error here? ECMA talks about
- * 'consistent compare functions' that don't return NaN, but is
- * silent about what the result should be. So we currently
- * ignore it.
- */
- cmp = 0;
- } else if (cmp != 0) {
- cmp = cmp > 0 ? 1 : -1;
- }
- } else {
- ca->status = ok;
- }
- }
- return (int)cmp;
-}
-
-static int
-sort_compare_strings(const void *a, const void *b, void *arg)
-{
- jsval av = *(const jsval *)a, bv = *(const jsval *)b;
-
- return (int) js_CompareStrings(JSVAL_TO_STRING(av), JSVAL_TO_STRING(bv));
-}
-
-/* XXXmccabe do the sort helper functions need to take int? (Or can we claim
- * that 2^32 * 32 is too large to worry about?) Something dumps when I change
- * to unsigned int; is qsort using -1 as a fencepost?
- */
-static JSBool
-array_sort(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- jsval fval;
- CompareArgs ca;
- jsuint len, newlen, i;
- jsval *vec;
- jsid id;
- size_t nbytes;
-
- /*
- * Optimize the default compare function case if all of obj's elements
- * have values of type string.
- */
- JSBool all_strings;
-
- if (argc > 0) {
- if (JSVAL_IS_PRIMITIVE(argv[0])) {
- JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
- JSMSG_BAD_SORT_ARG);
- return JS_FALSE;
- }
- fval = argv[0];
- all_strings = JS_FALSE; /* non-default compare function */
- } else {
- fval = JSVAL_NULL;
- all_strings = JS_TRUE; /* check for all string values */
- }
-
- if (!js_GetLengthProperty(cx, obj, &len))
- return JS_FALSE;
- if (len == 0) {
- *rval = OBJECT_TO_JSVAL(obj);
- return JS_TRUE;
- }
-
- /*
- * Test for size_t overflow, which could lead to indexing beyond the end
- * of the malloc'd vector.
- */
- nbytes = len * sizeof(jsval);
- if (nbytes != (double) len * sizeof(jsval)) {
- JS_ReportOutOfMemory(cx);
- return JS_FALSE;
- }
- vec = (jsval *) JS_malloc(cx, nbytes);
- if (!vec)
- return JS_FALSE;
-
-#if JS_HAS_SPARSE_ARRAYS
- newlen = 0;
-#else
- newlen = len;
-#endif
-
- for (i = 0; i < len; i++) {
- ca.status = IndexToId(cx, i, &id);
- if (!ca.status)
- goto out;
-#if JS_HAS_SPARSE_ARRAYS
- {
- JSObject *obj2;
- JSProperty *prop;
- ca.status = OBJ_LOOKUP_PROPERTY(cx, obj, id, &obj2, &prop);
- if (!ca.status)
- goto out;
- if (!prop) {
- vec[i] = JSVAL_VOID;
- continue;
- }
- OBJ_DROP_PROPERTY(cx, obj2, prop);
- newlen++;
- }
-#endif
- ca.status = OBJ_GET_PROPERTY(cx, obj, id, &vec[i]);
- if (!ca.status)
- goto out;
-
- /* We know JSVAL_IS_STRING yields 0 or 1, so avoid a branch via &=. */
- all_strings &= JSVAL_IS_STRING(vec[i]);
- }
-
- ca.context = cx;
- ca.fval = fval;
- ca.status = JS_TRUE;
- if (!js_HeapSort(vec, (size_t) len, sizeof(jsval),
- all_strings ? sort_compare_strings : sort_compare,
- &ca)) {
- JS_ReportOutOfMemory(cx);
- ca.status = JS_FALSE;
- }
-
- if (ca.status) {
- ca.status = InitArrayElements(cx, obj, newlen, vec);
- if (ca.status)
- *rval = OBJECT_TO_JSVAL(obj);
-#if JS_HAS_SPARSE_ARRAYS
- /* set length of newly-created array object to old length. */
- if (ca.status && newlen < len) {
- ca.status = js_SetLengthProperty(cx, obj, len);
-
- /* Delete any leftover properties greater than newlen. */
- while (ca.status && newlen < len) {
- jsval junk;
-
- ca.status = !IndexToId(cx, newlen, &id) ||
- !OBJ_DELETE_PROPERTY(cx, obj, id, &junk);
- newlen++;
- }
- }
-#endif
- }
-
-out:
- if (vec)
- JS_free(cx, vec);
- return ca.status;
-}
-#endif /* JS_HAS_SOME_PERL_FUN */
-
-#if JS_HAS_MORE_PERL_FUN
-/*
- * Perl-inspired push, pop, shift, unshift, and splice methods.
- */
-static JSBool
-array_push(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- jsuint length;
- uintN i;
- jsid id;
-
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
- for (i = 0; i < argc; i++) {
- if (!IndexToId(cx, length + i, &id))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id, &argv[i]))
- return JS_FALSE;
- }
-
- /*
- * If JS1.2, follow Perl4 by returning the last thing pushed. Otherwise,
- * return the new array length.
- */
- length += argc;
- if (cx->version == JSVERSION_1_2) {
- *rval = argc ? argv[argc-1] : JSVAL_VOID;
- } else {
- if (!IndexToValue(cx, length, rval))
- return JS_FALSE;
- }
- return js_SetLengthProperty(cx, obj, length);
-}
-
-static JSBool
-array_pop(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- jsuint index;
- jsid id;
- jsval junk;
-
- if (!js_GetLengthProperty(cx, obj, &index))
- return JS_FALSE;
- if (index > 0) {
- index--;
- if (!IndexToId(cx, index, &id))
- return JS_FALSE;
-
- /* Get the to-be-deleted property's value into rval. */
- if (!OBJ_GET_PROPERTY(cx, obj, id, rval))
- return JS_FALSE;
-
- if (!OBJ_DELETE_PROPERTY(cx, obj, id, &junk))
- return JS_FALSE;
- }
- return js_SetLengthProperty(cx, obj, index);
-}
-
-static JSBool
-array_shift(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- jsuint length, i;
- jsid id, id2;
- jsval v, junk;
-
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
- if (length > 0) {
- length--;
- id = JSVAL_ZERO;
-
- /* Get the to-be-deleted property's value into rval ASAP. */
- if (!OBJ_GET_PROPERTY(cx, obj, id, rval))
- return JS_FALSE;
-
- /*
- * Slide down the array above the first element.
- */
- if (length > 0) {
- for (i = 1; i <= length; i++) {
- if (!IndexToId(cx, i, &id))
- return JS_FALSE;
- if (!IndexToId(cx, i - 1, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id2, &v))
- return JS_FALSE;
- }
- }
-
- /* Delete the only or last element. */
- if (!OBJ_DELETE_PROPERTY(cx, obj, id, &junk))
- return JS_FALSE;
- }
- return js_SetLengthProperty(cx, obj, length);
-}
-
-static JSBool
-array_unshift(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
- jsval *rval)
-{
- jsuint length, last;
- uintN i;
- jsid id, id2;
- jsval v;
-#if JS_HAS_SPARSE_ARRAYS
- JSObject *obj2;
- JSProperty *prop;
-#endif
-
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
- if (argc > 0) {
- /* Slide up the array to make room for argc at the bottom. */
- if (length > 0) {
- last = length;
- while (last--) {
- if (!IndexToId(cx, last, &id))
- return JS_FALSE;
- if (!IndexToId(cx, last + argc, &id2))
- return JS_FALSE;
-#if JS_HAS_SPARSE_ARRAYS
- if (!OBJ_LOOKUP_PROPERTY(cx, obj, id, &obj2, &prop))
- return JS_FALSE;
- if (!prop) {
- OBJ_DELETE_PROPERTY(cx, obj, id2, &v); /* v is junk. */
- continue;
- }
- OBJ_DROP_PROPERTY(cx, obj2, prop);
-#endif
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id2, &v))
- return JS_FALSE;
- }
- }
-
- /* Copy from argv to the bottom of the array. */
- for (i = 0; i < argc; i++) {
- if (!IndexToId(cx, i, &id))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id, &argv[i]))
- return JS_FALSE;
- }
-
- /* Follow Perl by returning the new array length. */
- length += argc;
- if (!js_SetLengthProperty(cx, obj, length))
- return JS_FALSE;
- }
- return IndexToValue(cx, length, rval);
-}
-
-static JSBool
-array_splice(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- jsuint length, begin, end, count, delta, last;
- uintN i;
- jsdouble d;
- jsid id, id2;
- jsval v;
- JSObject *obj2;
-
- /* Nothing to do if no args. Otherwise lock and load length. */
- if (argc == 0)
- return JS_TRUE;
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
-
- /* Convert the first argument into a starting index. */
- if (!js_ValueToNumber(cx, *argv, &d))
- return JS_FALSE;
- d = js_DoubleToInteger(d);
- if (d < 0) {
- d += length;
- if (d < 0)
- d = 0;
- } else if (d > length) {
- d = length;
- }
- begin = (jsuint)d; /* d has been clamped to uint32 */
- argc--;
- argv++;
-
- /* Convert the second argument from a count into a fencepost index. */
- delta = length - begin;
- if (argc == 0) {
- count = delta;
- end = length;
- } else {
- if (!js_ValueToNumber(cx, *argv, &d))
- return JS_FALSE;
- d = js_DoubleToInteger(d);
- if (d < 0)
- d = 0;
- else if (d > delta)
- d = delta;
- count = (jsuint)d;
- end = begin + count;
- argc--;
- argv++;
- }
-
- if (count == 1 && cx->version == JSVERSION_1_2) {
- /*
- * JS lacks "list context", whereby in Perl one turns the single
- * scalar that's spliced out into an array just by assigning it to
- * @single instead of $single, or by using it as Perl push's first
- * argument, for instance.
- *
- * JS1.2 emulated Perl too closely and returned a non-Array for
- * the single-splice-out case, requiring callers to test and wrap
- * in [] if necessary. So JS1.3, default, and other versions all
- * return an array of length 1 for uniformity.
- */
- if (!IndexToId(cx, begin, &id))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, rval))
- return JS_FALSE;
- } else {
- if (cx->version != JSVERSION_1_2 || count > 0) {
- /*
- * Create a new array value to return. Our ECMA v2 proposal specs
- * that splice always returns an array value, even when given no
- * arguments. We think this is best because it eliminates the need
- * for callers to do an extra test to handle the empty splice case.
- */
- obj2 = js_NewArrayObject(cx, 0, NULL);
- if (!obj2)
- return JS_FALSE;
- *rval = OBJECT_TO_JSVAL(obj2);
-
- /* If there are elements to remove, put them into the return value. */
- if (count > 0) {
- for (last = begin; last < end; last++) {
- if (!IndexToId(cx, last, &id))
- return JS_FALSE;
- if (!IndexToId(cx, last - begin, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj2, id2, &v))
- return JS_FALSE;
- }
- }
- }
- }
-
- /* Find the direction (up or down) to copy and make way for argv. */
- if (argc > count) {
- delta = (jsuint)argc - count;
- last = length;
- /* (uint) end could be 0, so can't use vanilla >= test */
- while (last-- > end) {
- if (!IndexToId(cx, last, &id))
- return JS_FALSE;
- if (!IndexToId(cx, last + delta, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id2, &v))
- return JS_FALSE;
- }
- length += delta;
- } else if (argc < count) {
- delta = count - (jsuint)argc;
- for (last = end; last < length; last++) {
- if (!IndexToId(cx, last, &id))
- return JS_FALSE;
- if (!IndexToId(cx, last - delta, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id2, &v))
- return JS_FALSE;
- }
- length -= delta;
- }
-
- /* Copy from argv into the hole to complete the splice. */
- for (i = 0; i < argc; i++) {
- if (!IndexToId(cx, begin + i, &id))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, obj, id, &argv[i]))
- return JS_FALSE;
- }
-
- /* Update length in case we deleted elements from the end. */
- return js_SetLengthProperty(cx, obj, length);
-}
-#endif /* JS_HAS_MORE_PERL_FUN */
-
-#if JS_HAS_SEQUENCE_OPS
-/*
- * Python-esque sequence operations.
- */
-static JSBool
-array_concat(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- JSObject *nobj, *aobj;
- jsuint length, alength, slot;
- uintN i;
- jsval v;
- jsid id, id2;
-
- /* Treat obj as the first argument; see ECMA 15.4.4.4. */
- --argv;
- JS_ASSERT(obj == JSVAL_TO_OBJECT(argv[0]));
-
- /* Create a new Array object and store it in the rval local root. */
- nobj = js_NewArrayObject(cx, 0, NULL);
- if (!nobj)
- return JS_FALSE;
- *rval = OBJECT_TO_JSVAL(nobj);
-
- /* Loop over [0, argc] to concat args into nobj, expanding all Arrays. */
- length = 0;
- for (i = 0; i <= argc; i++) {
- v = argv[i];
- if (JSVAL_IS_OBJECT(v)) {
- aobj = JSVAL_TO_OBJECT(v);
- if (aobj && OBJ_GET_CLASS(cx, aobj) == &js_ArrayClass) {
- if (!OBJ_GET_PROPERTY(cx, aobj,
- (jsid)cx->runtime->atomState.lengthAtom,
- &v)) {
- return JS_FALSE;
- }
- if (!ValueIsLength(cx, v, &alength))
- return JS_FALSE;
- for (slot = 0; slot < alength; slot++) {
- if (!IndexToId(cx, slot, &id))
- return JS_FALSE;
- if (!IndexToId(cx, length + slot, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, aobj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, nobj, id2, &v))
- return JS_FALSE;
- }
- length += alength;
- continue;
- }
- }
-
- if (!IndexToId(cx, length, &id))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, nobj, id, &v))
- return JS_FALSE;
- length++;
- }
-
- return JS_TRUE;
-}
-
-static JSBool
-array_slice(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- JSObject *nobj;
- jsuint length, begin, end, slot;
- jsdouble d;
- jsid id, id2;
- jsval v;
-
- nobj = js_NewArrayObject(cx, 0, NULL);
- if (!nobj)
- return JS_FALSE;
-
- if (!js_GetLengthProperty(cx, obj, &length))
- return JS_FALSE;
- begin = 0;
- end = length;
-
- if (argc > 0) {
- if (!js_ValueToNumber(cx, argv[0], &d))
- return JS_FALSE;
- d = js_DoubleToInteger(d);
- if (d < 0) {
- d += length;
- if (d < 0)
- d = 0;
- } else if (d > length) {
- d = length;
- }
- begin = (jsuint)d;
-
- if (argc > 1) {
- if (!js_ValueToNumber(cx, argv[1], &d))
- return JS_FALSE;
- d = js_DoubleToInteger(d);
- if (d < 0) {
- d += length;
- if (d < 0)
- d = 0;
- } else if (d > length) {
- d = length;
- }
- end = (jsuint)d;
- }
- }
-
- for (slot = begin; slot < end; slot++) {
- if (!IndexToId(cx, slot, &id))
- return JS_FALSE;
- if (!IndexToId(cx, slot - begin, &id2))
- return JS_FALSE;
- if (!OBJ_GET_PROPERTY(cx, obj, id, &v))
- return JS_FALSE;
- if (!OBJ_SET_PROPERTY(cx, nobj, id2, &v))
- return JS_FALSE;
- }
- *rval = OBJECT_TO_JSVAL(nobj);
- return JS_TRUE;
-}
-#endif /* JS_HAS_SEQUENCE_OPS */
-
-static JSFunctionSpec array_methods[] = {
-#if JS_HAS_TOSOURCE
- {js_toSource_str, array_toSource, 0,0,0},
-#endif
- {js_toString_str, array_toString, 0,0,0},
- {js_toLocaleString_str, array_toLocaleString, 0,0,0},
-
- /* Perl-ish methods. */
-#if JS_HAS_SOME_PERL_FUN
- {"join", array_join, 1,0,0},
- {"reverse", array_reverse, 0,0,0},
- {"sort", array_sort, 1,0,0},
-#endif
-#if JS_HAS_MORE_PERL_FUN
- {"push", array_push, 1,0,0},
- {"pop", array_pop, 0,0,0},
- {"shift", array_shift, 0,0,0},
- {"unshift", array_unshift, 1,0,0},
- {"splice", array_splice, 1,0,0},
-#endif
-
- /* Python-esque sequence methods. */
-#if JS_HAS_SEQUENCE_OPS
- {"concat", array_concat, 0,0,0},
- {"slice", array_slice, 0,0,0},
-#endif
-
- {0,0,0,0,0}
-};
-
-static JSBool
-Array(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
- jsuint length;
- jsval *vector;
-
- /* If called without new, replace obj with a new Array object. */
- if (!(cx->fp->flags & JSFRAME_CONSTRUCTING)) {
- obj = js_NewObject(cx, &js_ArrayClass, NULL, NULL);
- if (!obj)
- return JS_FALSE;
- *rval = OBJECT_TO_JSVAL(obj);
- }
-
- if (argc == 0) {
- length = 0;
- vector = NULL;
- } else if (cx->version == JSVERSION_1_2) {
- length = (jsuint) argc;
- vector = argv;
- } else if (argc > 1) {
- length = (jsuint) argc;
- vector = argv;
- } else if (!JSVAL_IS_NUMBER(argv[0])) {
- length = 1;
- vector = argv;
- } else {
- if (!ValueIsLength(cx, argv[0], &length))
- return JS_FALSE;
- vector = NULL;
- }
- return InitArrayObject(cx, obj, length, vector);
-}
-
-JSObject *
-js_InitArrayClass(JSContext *cx, JSObject *obj)
-{
- JSObject *proto;
-
- proto = JS_InitClass(cx, obj, NULL, &js_ArrayClass, Array, 1,
- NULL, array_methods, NULL, NULL);
-
- /* Initialize the Array prototype object so it gets a length property. */
- if (!proto || !InitArrayObject(cx, proto, 0, NULL))
- return NULL;
- return proto;
-}
-
-JSObject *
-js_NewArrayObject(JSContext *cx, jsuint length, jsval *vector)
-{
- JSObject *obj;
-
- obj = js_NewObject(cx, &js_ArrayClass, NULL, NULL);
- if (!obj)
- return NULL;
- if (!InitArrayObject(cx, obj, length, vector)) {
- cx->newborn[GCX_OBJECT] = NULL;
- return NULL;
- }
- return obj;
-}