mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
438 lines
13 KiB
C++
438 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; -*-
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* vim: set ts=4 sw=4 et tw=99:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* May 28, 2008.
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*
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* The Initial Developer of the Original Code is
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* Andreas Gal <gal@mozilla.com>
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*
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* Contributor(s):
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* Brendan Eich <brendan@mozilla.org>
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* Mike Shaver <shaver@mozilla.org>
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* David Anderson <danderson@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <math.h>
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#include "jsapi.h"
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#include "jsstdint.h"
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#include "jsarray.h"
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#include "jsbool.h"
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#include "jscntxt.h"
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#include "jsgc.h"
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#include "jsiter.h"
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#include "jsnum.h"
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#include "jslibmath.h"
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#include "jsmath.h"
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#include "jsnum.h"
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#include "prmjtime.h"
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#include "jsdate.h"
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#include "jsscope.h"
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#include "jsstr.h"
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#include "jsbuiltins.h"
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#include "jstracer.h"
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#include "jsvector.h"
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#include "jsatominlines.h"
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#include "jsobjinlines.h"
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#include "jsscopeinlines.h"
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using namespace avmplus;
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using namespace nanojit;
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using namespace js;
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JS_FRIEND_API(void)
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js_SetTraceableNativeFailed(JSContext *cx)
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{
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SetBuiltinError(cx);
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}
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/*
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* NB: bool FASTCALL is not compatible with Nanojit's calling convention usage.
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* Do not use bool FASTCALL, use JSBool only!
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*/
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jsdouble FASTCALL
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js_dmod(jsdouble a, jsdouble b)
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{
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if (b == 0.0) {
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jsdpun u;
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u.s.hi = JSDOUBLE_HI32_EXPMASK | JSDOUBLE_HI32_MANTMASK;
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u.s.lo = 0xffffffff;
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return u.d;
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}
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return js_fmod(a, b);
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}
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JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_dmod, DOUBLE, DOUBLE, 1, ACC_NONE)
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int32 FASTCALL
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js_imod(int32 a, int32 b)
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{
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if (a < 0 || b <= 0)
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return -1;
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int r = a % b;
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return r;
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}
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JS_DEFINE_CALLINFO_2(extern, INT32, js_imod, INT32, INT32, 1, ACC_NONE)
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/* The following boxing/unboxing primitives we can't emit inline because
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they either interact with the GC and depend on Spidermonkey's 32-bit
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integer representation. */
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jsval FASTCALL
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js_BoxDouble(JSContext* cx, jsdouble d)
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{
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int32 i;
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if (JSDOUBLE_IS_INT(d, i) && INT_FITS_IN_JSVAL(i))
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return INT_TO_JSVAL(i);
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JS_ASSERT(JS_ON_TRACE(cx));
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jsval v; /* not rooted but ok here because we know GC won't run */
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if (!js_NewDoubleInRootedValue(cx, d, &v))
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return JSVAL_ERROR_COOKIE;
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return v;
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}
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JS_DEFINE_CALLINFO_2(extern, JSVAL, js_BoxDouble, CONTEXT, DOUBLE, 1, ACC_NONE)
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jsval FASTCALL
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js_BoxInt32(JSContext* cx, int32 i)
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{
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if (JS_LIKELY(INT_FITS_IN_JSVAL(i)))
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return INT_TO_JSVAL(i);
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JS_ASSERT(JS_ON_TRACE(cx));
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jsval v; /* not rooted but ok here because we know GC won't run */
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jsdouble d = (jsdouble)i;
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if (!js_NewDoubleInRootedValue(cx, d, &v))
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return JSVAL_ERROR_COOKIE;
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return v;
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}
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JS_DEFINE_CALLINFO_2(extern, JSVAL, js_BoxInt32, CONTEXT, INT32, 1, ACC_NONE)
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jsdouble FASTCALL
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js_UnboxDouble(jsval v)
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{
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if (JS_LIKELY(JSVAL_IS_INT(v)))
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return (jsdouble)JSVAL_TO_INT(v);
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return *JSVAL_TO_DOUBLE(v);
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}
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JS_DEFINE_CALLINFO_1(extern, DOUBLE, js_UnboxDouble, JSVAL, 1, ACC_NONE)
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int32 FASTCALL
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js_UnboxInt32(jsval v)
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{
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if (JS_LIKELY(JSVAL_IS_INT(v)))
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return JSVAL_TO_INT(v);
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return js_DoubleToECMAInt32(*JSVAL_TO_DOUBLE(v));
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}
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JS_DEFINE_CALLINFO_1(extern, INT32, js_UnboxInt32, JSVAL, 1, ACC_NONE)
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JSBool FASTCALL
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js_TryUnboxInt32(jsval v, int32* i32p)
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{
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if (JS_LIKELY(JSVAL_IS_INT(v))) {
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*i32p = JSVAL_TO_INT(v);
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return JS_TRUE;
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}
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if (!JSVAL_IS_DOUBLE(v))
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return JS_FALSE;
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int32 i;
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jsdouble d = *JSVAL_TO_DOUBLE(v);
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if (!JSDOUBLE_IS_INT(d, i))
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return JS_FALSE;
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*i32p = i;
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return JS_TRUE;
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}
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JS_DEFINE_CALLINFO_2(extern, BOOL, js_TryUnboxInt32, JSVAL, INT32PTR, 1, ACC_NONE)
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int32 FASTCALL
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js_DoubleToInt32(jsdouble d)
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{
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return js_DoubleToECMAInt32(d);
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}
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JS_DEFINE_CALLINFO_1(extern, INT32, js_DoubleToInt32, DOUBLE, 1, ACC_NONE)
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uint32 FASTCALL
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js_DoubleToUint32(jsdouble d)
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{
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return js_DoubleToECMAUint32(d);
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}
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JS_DEFINE_CALLINFO_1(extern, UINT32, js_DoubleToUint32, DOUBLE, 1, ACC_NONE)
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jsdouble FASTCALL
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js_StringToNumber(JSContext* cx, JSString* str)
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{
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return StringToNumberType<jsdouble>(cx, str);
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}
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JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_StringToNumber, CONTEXT, STRING, 1, ACC_NONE)
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int32 FASTCALL
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js_StringToInt32(JSContext* cx, JSString* str)
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{
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return StringToNumberType<int32>(cx, str);
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}
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JS_DEFINE_CALLINFO_2(extern, INT32, js_StringToInt32, CONTEXT, STRING, 1, ACC_NONE)
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JSBool FASTCALL
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js_AddProperty(JSContext* cx, JSObject* obj, JSScopeProperty* sprop)
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{
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JS_LOCK_OBJ(cx, obj);
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uint32 slot = sprop->slot;
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JSScope* scope = OBJ_SCOPE(obj);
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if (slot != scope->freeslot)
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goto exit_trace;
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JS_ASSERT(sprop->parent == scope->lastProperty());
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if (scope->isSharedEmpty()) {
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scope = js_GetMutableScope(cx, obj);
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if (!scope)
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goto exit_trace;
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} else {
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JS_ASSERT(!scope->hasProperty(sprop));
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}
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if (!scope->table) {
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if (slot < STOBJ_NSLOTS(obj) && !OBJ_GET_CLASS(cx, obj)->reserveSlots) {
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JS_ASSERT(JSVAL_IS_VOID(STOBJ_GET_SLOT(obj, scope->freeslot)));
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++scope->freeslot;
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} else {
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if (!js_AllocSlot(cx, obj, &slot))
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goto exit_trace;
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if (slot != sprop->slot) {
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js_FreeSlot(cx, obj, slot);
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goto exit_trace;
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}
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}
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scope->extend(cx, sprop);
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} else {
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JSScopeProperty *sprop2 =
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scope->addProperty(cx, sprop->id, sprop->getter(), sprop->setter(),
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SPROP_INVALID_SLOT, sprop->attrs, sprop->getFlags(),
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sprop->shortid);
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if (sprop2 != sprop)
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goto exit_trace;
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}
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if (js_IsPropertyCacheDisabled(cx))
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goto exit_trace;
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JS_UNLOCK_SCOPE(cx, scope);
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return JS_TRUE;
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exit_trace:
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JS_UNLOCK_SCOPE(cx, scope);
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return JS_FALSE;
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}
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JS_DEFINE_CALLINFO_3(extern, BOOL, js_AddProperty, CONTEXT, OBJECT, SCOPEPROP, 0, ACC_STORE_ANY)
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static JSBool
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HasProperty(JSContext* cx, JSObject* obj, jsid id)
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{
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// Check that we know how the lookup op will behave.
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for (JSObject* pobj = obj; pobj; pobj = pobj->getProto()) {
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if (pobj->map->ops->lookupProperty != js_LookupProperty)
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return JSVAL_TO_SPECIAL(JSVAL_VOID);
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JSClass* clasp = OBJ_GET_CLASS(cx, pobj);
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if (clasp->resolve != JS_ResolveStub && clasp != &js_StringClass)
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return JSVAL_TO_SPECIAL(JSVAL_VOID);
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}
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JSObject* obj2;
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JSProperty* prop;
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if (js_LookupPropertyWithFlags(cx, obj, id, JSRESOLVE_QUALIFIED, &obj2, &prop) < 0)
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return JSVAL_TO_SPECIAL(JSVAL_VOID);
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if (prop)
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obj2->dropProperty(cx, prop);
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return prop != NULL;
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}
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JSBool FASTCALL
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js_HasNamedProperty(JSContext* cx, JSObject* obj, JSString* idstr)
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{
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jsid id;
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if (!js_ValueToStringId(cx, STRING_TO_JSVAL(idstr), &id))
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return JSVAL_TO_BOOLEAN(JSVAL_VOID);
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return HasProperty(cx, obj, id);
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}
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JS_DEFINE_CALLINFO_3(extern, BOOL, js_HasNamedProperty, CONTEXT, OBJECT, STRING, 0, ACC_STORE_ANY)
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JSBool FASTCALL
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js_HasNamedPropertyInt32(JSContext* cx, JSObject* obj, int32 index)
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{
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jsid id;
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if (!js_Int32ToId(cx, index, &id))
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return JSVAL_TO_BOOLEAN(JSVAL_VOID);
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return HasProperty(cx, obj, id);
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}
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JS_DEFINE_CALLINFO_3(extern, BOOL, js_HasNamedPropertyInt32, CONTEXT, OBJECT, INT32, 0,
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ACC_STORE_ANY)
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JSString* FASTCALL
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js_TypeOfObject(JSContext* cx, JSObject* obj)
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{
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if (!obj)
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return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[JSTYPE_OBJECT]);
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return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[obj->typeOf(cx)]);
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}
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JS_DEFINE_CALLINFO_2(extern, STRING, js_TypeOfObject, CONTEXT, OBJECT, 1, ACC_NONE)
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JSString* FASTCALL
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js_TypeOfBoolean(JSContext* cx, int32 unboxed)
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{
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/* Watch out for pseudo-booleans. */
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jsval boxed = SPECIAL_TO_JSVAL(unboxed);
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JS_ASSERT(JSVAL_IS_VOID(boxed) || JSVAL_IS_BOOLEAN(boxed));
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JSType type = JS_TypeOfValue(cx, boxed);
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return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]);
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}
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JS_DEFINE_CALLINFO_2(extern, STRING, js_TypeOfBoolean, CONTEXT, INT32, 1, ACC_NONE)
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jsdouble FASTCALL
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js_BooleanOrUndefinedToNumber(JSContext* cx, int32 unboxed)
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{
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if (unboxed == JSVAL_TO_SPECIAL(JSVAL_VOID))
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return js_NaN;
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JS_ASSERT(unboxed == JS_TRUE || unboxed == JS_FALSE);
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return unboxed;
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}
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JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_BooleanOrUndefinedToNumber, CONTEXT, INT32, 1, ACC_NONE)
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JSString* FASTCALL
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js_BooleanOrUndefinedToString(JSContext *cx, int32 unboxed)
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{
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JS_ASSERT(uint32(unboxed) <= 2);
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return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[unboxed]);
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}
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JS_DEFINE_CALLINFO_2(extern, STRING, js_BooleanOrUndefinedToString, CONTEXT, INT32, 1, ACC_NONE)
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JSObject* FASTCALL
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js_NewNullClosure(JSContext* cx, JSObject* funobj, JSObject* proto, JSObject* parent)
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{
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JS_ASSERT(HAS_FUNCTION_CLASS(funobj));
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JS_ASSERT(HAS_FUNCTION_CLASS(proto));
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JS_ASSERT(JS_ON_TRACE(cx));
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JSFunction *fun = (JSFunction*) funobj;
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JS_ASSERT(GET_FUNCTION_PRIVATE(cx, funobj) == fun);
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JSObject* closure = js_NewGCObject(cx);
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if (!closure)
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return NULL;
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closure->initSharingEmptyScope(&js_FunctionClass, proto, parent,
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reinterpret_cast<jsval>(fun));
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return closure;
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}
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JS_DEFINE_CALLINFO_4(extern, OBJECT, js_NewNullClosure, CONTEXT, OBJECT, OBJECT, OBJECT, 0,
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ACC_STORE_ANY)
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JS_REQUIRES_STACK JSBool FASTCALL
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js_PopInterpFrame(JSContext* cx, InterpState* state)
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{
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JS_ASSERT(cx->fp && cx->fp->down);
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JSInlineFrame* ifp = (JSInlineFrame*)cx->fp;
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/*
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* Mirror frame popping code from inline_return in js_Interpret. There are
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* some things we just don't want to handle. In those cases, the trace will
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* MISMATCH_EXIT.
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*/
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if (ifp->hookData)
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return JS_FALSE;
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if (cx->version != ifp->callerVersion)
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return JS_FALSE;
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if (cx->fp->flags & JSFRAME_CONSTRUCTING)
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return JS_FALSE;
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if (cx->fp->imacpc)
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return JS_FALSE;
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if (cx->fp->blockChain)
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return JS_FALSE;
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cx->fp->putActivationObjects(cx);
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/* Update display table. */
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if (cx->fp->script->staticLevel < JS_DISPLAY_SIZE)
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cx->display[cx->fp->script->staticLevel] = cx->fp->displaySave;
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/* Pop the frame and its memory. */
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cx->fp = cx->fp->down;
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JS_ASSERT(cx->fp->regs == &ifp->callerRegs);
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cx->fp->regs = ifp->frame.regs;
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JS_ARENA_RELEASE(&cx->stackPool, ifp->mark);
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/* Update the inline call count. */
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*state->inlineCallCountp = *state->inlineCallCountp - 1;
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return JS_TRUE;
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}
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JS_DEFINE_CALLINFO_2(extern, BOOL, js_PopInterpFrame, CONTEXT, INTERPSTATE, 0, ACC_STORE_ANY)
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JSString* FASTCALL
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js_ConcatN(JSContext *cx, JSString **strArray, uint32 size)
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{
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/* Calculate total size. */
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size_t numChar = 1;
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for (uint32 i = 0; i < size; ++i) {
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size_t before = numChar;
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numChar += strArray[i]->length();
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if (numChar < before)
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return NULL;
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}
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/* Allocate buffer. */
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if (numChar & js::tl::MulOverflowMask<sizeof(jschar)>::result)
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return NULL;
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jschar *buf = (jschar *)cx->malloc(numChar * sizeof(jschar));
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if (!buf)
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return NULL;
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/* Fill buffer. */
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jschar *ptr = buf;
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for (uint32 i = 0; i < size; ++i) {
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const jschar *chars;
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size_t length;
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strArray[i]->getCharsAndLength(chars, length);
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js_strncpy(ptr, chars, length);
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ptr += length;
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}
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*ptr = '\0';
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/* Create string. */
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JSString *str = js_NewString(cx, buf, numChar - 1);
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if (!str)
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cx->free(buf);
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return str;
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}
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JS_DEFINE_CALLINFO_3(extern, STRING, js_ConcatN, CONTEXT, STRINGPTR, UINT32, 0, ACC_STORE_ANY)
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