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gecko-dev/js/src/jsapi.c

2865 строки
64 KiB
C
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
* JavaScript API.
*/
#include "jsstddef.h"
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "jstypes.h"
#include "jsarena.h" /* Added by JSIFY */
#include "jsutil.h" /* Added by JSIFY */
#include "jsclist.h"
#include "jsprf.h"
#include "jsapi.h"
#include "jsarray.h"
#include "jsatom.h"
#include "jsbool.h"
#include "jscntxt.h"
#include "jsconfig.h"
#include "jsdate.h"
#include "jsemit.h"
#include "jsexn.h"
#include "jsfun.h"
#include "jsgc.h"
#include "jsinterp.h"
#include "jslock.h"
#include "jsmath.h"
#include "jsnum.h"
#include "jsobj.h"
#include "jsopcode.h"
#include "jsparse.h"
#include "jsregexp.h"
#include "jsscan.h"
#include "jsscope.h"
#include "jsscript.h"
#include "jsstr.h"
#if JS_HAS_FILE_OBJECT
#include "jsfile.h"
#endif
#if defined(JS_PARANOID_REQUEST) && defined(JS_THREADSAFE)
#define CHECK_REQUEST(cx) JS_ASSERT(cx->requestDepth)
#else
#define CHECK_REQUEST(cx) ((void)0)
#endif
JS_PUBLIC_API(jsval)
JS_GetNaNValue(JSContext *cx)
{
CHECK_REQUEST(cx);
return DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
}
JS_PUBLIC_API(jsval)
JS_GetNegativeInfinityValue(JSContext *cx)
{
CHECK_REQUEST(cx);
return DOUBLE_TO_JSVAL(cx->runtime->jsNegativeInfinity);
}
JS_PUBLIC_API(jsval)
JS_GetPositiveInfinityValue(JSContext *cx)
{
CHECK_REQUEST(cx);
return DOUBLE_TO_JSVAL(cx->runtime->jsPositiveInfinity);
}
JS_PUBLIC_API(jsval)
JS_GetEmptyStringValue(JSContext *cx)
{
CHECK_REQUEST(cx);
return STRING_TO_JSVAL(cx->runtime->emptyString);
}
JS_PUBLIC_API(JSBool)
JS_ConvertArguments(JSContext *cx, uintN argc, jsval *argv, const char *format,
...)
{
va_list ap;
uintN i;
JSBool required;
const char *cp;
JSFunction *fun;
jsdouble d;
JSString *str;
JSObject *obj;
CHECK_REQUEST(cx);
va_start(ap, format);
i = 0;
required = JS_TRUE;
for (cp = format; *cp != '\0'; cp++) {
if (isspace(*cp))
continue;
if (*cp == '/') {
required = JS_FALSE;
continue;
}
if (i == argc) {
if (required) {
fun = js_ValueToFunction(cx, &argv[-2], JS_FALSE);
if (fun) {
char numBuf[12];
JS_snprintf(numBuf, sizeof numBuf, "%u", argc);
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_MORE_ARGS_NEEDED,
JS_GetFunctionName(fun), numBuf,
(argc == 1) ? "" : "s");
}
return JS_FALSE;
}
break;
}
switch (*cp) {
case 'b':
if (!js_ValueToBoolean(cx, argv[i], va_arg(ap, JSBool *)))
return JS_FALSE;
break;
case 'c':
if (!js_ValueToUint16(cx, argv[i], va_arg(ap, uint16 *)))
return JS_FALSE;
break;
case 'i':
if (!js_ValueToECMAInt32(cx, argv[i], va_arg(ap, int32 *)))
return JS_FALSE;
break;
case 'u':
if (!js_ValueToECMAUint32(cx, argv[i], va_arg(ap, uint32 *)))
return JS_FALSE;
break;
case 'j':
if (!js_ValueToInt32(cx, argv[i], va_arg(ap, int32 *)))
return JS_FALSE;
break;
case 'd':
if (!js_ValueToNumber(cx, argv[i], va_arg(ap, jsdouble *)))
return JS_FALSE;
break;
case 'I':
if (!js_ValueToNumber(cx, argv[i], &d))
return JS_FALSE;
*va_arg(ap, jsdouble *) = js_DoubleToInteger(d);
break;
case 's':
str = js_ValueToString(cx, argv[i]);
if (!str)
return JS_FALSE;
argv[i] = STRING_TO_JSVAL(str);
*va_arg(ap, char **) = JS_GetStringBytes(str);
break;
case 'S':
str = js_ValueToString(cx, argv[i]);
if (!str)
return JS_FALSE;
argv[i] = STRING_TO_JSVAL(str);
*va_arg(ap, JSString **) = str;
break;
case 'o':
if (!js_ValueToObject(cx, argv[i], &obj))
return JS_FALSE;
argv[i] = OBJECT_TO_JSVAL(obj);
*va_arg(ap, JSObject **) = obj;
break;
case 'f':
fun = js_ValueToFunction(cx, &argv[i], JS_FALSE);
if (!fun)
return JS_FALSE;
argv[i] = OBJECT_TO_JSVAL(fun->object);
*va_arg(ap, JSFunction **) = fun;
break;
case 'v':
*va_arg(ap, jsval *) = argv[i];
break;
case '*':
break;
default: {
char charBuf[2] = " ";
charBuf[0] = *cp;
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_BAD_CHAR,
charBuf);
return JS_FALSE;
}
}
i++;
}
va_end(ap);
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_ConvertValue(JSContext *cx, jsval v, JSType type, jsval *vp)
{
JSBool ok = JS_FALSE, b;
JSObject *obj;
JSFunction *fun;
JSString *str;
jsdouble d, *dp;
CHECK_REQUEST(cx);
switch (type) {
case JSTYPE_VOID:
*vp = JSVAL_VOID;
break;
case JSTYPE_OBJECT:
ok = js_ValueToObject(cx, v, &obj);
if (ok)
*vp = OBJECT_TO_JSVAL(obj);
break;
case JSTYPE_FUNCTION:
fun = js_ValueToFunction(cx, &v, JS_FALSE);
ok = (fun != NULL);
if (ok)
*vp = OBJECT_TO_JSVAL(fun->object);
break;
case JSTYPE_STRING:
str = js_ValueToString(cx, v);
ok = (str != NULL);
if (ok)
*vp = STRING_TO_JSVAL(str);
break;
case JSTYPE_NUMBER:
ok = js_ValueToNumber(cx, v, &d);
if (ok) {
dp = js_NewDouble(cx, d);
ok = (dp != NULL);
if (ok)
*vp = DOUBLE_TO_JSVAL(dp);
}
break;
case JSTYPE_BOOLEAN:
ok = js_ValueToBoolean(cx, v, &b);
if (ok)
*vp = BOOLEAN_TO_JSVAL(b);
break;
default: {
char numBuf[12];
JS_snprintf(numBuf, sizeof numBuf, "%d", (int)type);
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_BAD_TYPE,
numBuf);
ok = JS_FALSE;
break;
}
}
return ok;
}
JS_PUBLIC_API(JSBool)
JS_ValueToObject(JSContext *cx, jsval v, JSObject **objp)
{
CHECK_REQUEST(cx);
return js_ValueToObject(cx, v, objp);
}
JS_PUBLIC_API(JSFunction *)
JS_ValueToFunction(JSContext *cx, jsval v)
{
CHECK_REQUEST(cx);
return js_ValueToFunction(cx, &v, JS_FALSE);
}
JS_PUBLIC_API(JSFunction *)
JS_ValueToConstructor(JSContext *cx, jsval v)
{
CHECK_REQUEST(cx);
return js_ValueToFunction(cx, &v, JS_TRUE);
}
JS_PUBLIC_API(JSString *)
JS_ValueToString(JSContext *cx, jsval v)
{
CHECK_REQUEST(cx);
return js_ValueToString(cx, v);
}
JS_PUBLIC_API(JSBool)
JS_ValueToNumber(JSContext *cx, jsval v, jsdouble *dp)
{
CHECK_REQUEST(cx);
return js_ValueToNumber(cx, v, dp);
}
JS_PUBLIC_API(JSBool)
JS_ValueToECMAInt32(JSContext *cx, jsval v, int32 *ip)
{
CHECK_REQUEST(cx);
return js_ValueToECMAInt32(cx, v, ip);
}
JS_PUBLIC_API(JSBool)
JS_ValueToECMAUint32(JSContext *cx, jsval v, uint32 *ip)
{
CHECK_REQUEST(cx);
return js_ValueToECMAUint32(cx, v, ip);
}
JS_PUBLIC_API(JSBool)
JS_ValueToInt32(JSContext *cx, jsval v, int32 *ip)
{
CHECK_REQUEST(cx);
return js_ValueToInt32(cx, v, ip);
}
JS_PUBLIC_API(JSBool)
JS_ValueToUint16(JSContext *cx, jsval v, uint16 *ip)
{
CHECK_REQUEST(cx);
return js_ValueToUint16(cx, v, ip);
}
JS_PUBLIC_API(JSBool)
JS_ValueToBoolean(JSContext *cx, jsval v, JSBool *bp)
{
CHECK_REQUEST(cx);
return js_ValueToBoolean(cx, v, bp);
}
JS_PUBLIC_API(JSType)
JS_TypeOfValue(JSContext *cx, jsval v)
{
JSType type = JSTYPE_VOID;
JSObject *obj;
JSObjectOps *ops;
JSClass *clasp;
CHECK_REQUEST(cx);
if (JSVAL_IS_VOID(v)) {
type = JSTYPE_VOID;
} else if (JSVAL_IS_OBJECT(v)) {
obj = JSVAL_TO_OBJECT(v);
if (obj &&
(ops = obj->map->ops,
ops == &js_ObjectOps
? (clasp = OBJ_GET_CLASS(cx, obj),
clasp->call || clasp == &js_FunctionClass)
: ops->call != 0)) {
type = JSTYPE_FUNCTION;
} else {
type = JSTYPE_OBJECT;
}
} else if (JSVAL_IS_NUMBER(v)) {
type = JSTYPE_NUMBER;
} else if (JSVAL_IS_STRING(v)) {
type = JSTYPE_STRING;
} else if (JSVAL_IS_BOOLEAN(v)) {
type = JSTYPE_BOOLEAN;
}
return type;
}
JS_PUBLIC_API(const char *)
JS_GetTypeName(JSContext *cx, JSType type)
{
CHECK_REQUEST(cx);
if ((uintN)type >= (uintN)JSTYPE_LIMIT)
return NULL;
return js_type_str[type];
}
/************************************************************************/
JS_PUBLIC_API(JSRuntime *)
JS_NewRuntime(uint32 maxbytes)
{
JSRuntime *rt;
#ifdef DEBUG
JS_BEGIN_MACRO
/*
* This code asserts that the numbers associated with the error names in
* jsmsg.def are monotonically increasing. It uses values for the error
* names enumerated in jscntxt.c. It's not a compiletime check, but it's
* better than nothing.
*/
int errorNumber = 0;
#define MSG_DEF(name, number, count, exception, format) \
JS_ASSERT(name == errorNumber++);
#include "js.msg"
#undef MSG_DEF
JS_END_MACRO;
#endif /* DEBUG */
if (!js_InitStringGlobals())
return NULL;
rt = malloc(sizeof(JSRuntime));
if (!rt)
return NULL;
memset(rt, 0, sizeof(JSRuntime));
if (!js_InitGC(rt, maxbytes))
goto bad;
#ifdef JS_THREADSAFE
rt->gcLock = JS_NEW_LOCK();
if (!rt->gcLock)
goto bad;
rt->gcDone = JS_NEW_CONDVAR(rt->gcLock);
if (!rt->gcDone)
goto bad;
rt->requestDone = JS_NEW_CONDVAR(rt->gcLock);
if (!rt->requestDone)
goto bad;
js_SetupLocks(10); /* this is asymmetric with JS_ShutDown. */
js_NewLock(&rt->rtLock);
#endif
rt->propertyCache.empty = JS_TRUE;
JS_INIT_CLIST(&rt->contextList);
JS_INIT_CLIST(&rt->trapList);
JS_INIT_CLIST(&rt->watchPointList);
return rt;
bad:
JS_DestroyRuntime(rt);
return NULL;
}
JS_PUBLIC_API(void)
JS_DestroyRuntime(JSRuntime *rt)
{
js_FinishGC(rt);
#ifdef JS_THREADSAFE
if (rt->gcLock)
JS_DESTROY_LOCK(rt->gcLock);
if (rt->gcDone)
JS_DESTROY_CONDVAR(rt->gcDone);
if (rt->requestDone)
JS_DESTROY_CONDVAR(rt->requestDone);
js_DestroyLock(&rt->rtLock);
#endif
free(rt);
}
JS_PUBLIC_API(void)
JS_ShutDown(void)
{
js_FreeStringGlobals();
#ifdef JS_THREADSAFE
js_CleanupLocks();
#endif
}
#ifdef JS_THREADSAFE
JS_PUBLIC_API(void)
JS_BeginRequest(JSContext *cx)
{
JSRuntime *rt;
if (!cx->requestDepth) {
/* Wait until the GC is finished. */
rt = cx->runtime;
JS_LOCK_GC(rt);
while (rt->gcLevel > 0)
JS_AWAIT_GC_DONE(rt);
/* Indicate that a request is running. */
rt->requestCount++;
JS_UNLOCK_GC(rt);
}
cx->requestDepth++;
}
JS_PUBLIC_API(void)
JS_EndRequest(JSContext *cx)
{
JSRuntime *rt;
CHECK_REQUEST(cx);
cx->requestDepth--;
if (!cx->requestDepth) {
rt = cx->runtime;
JS_LOCK_GC(rt);
JS_ASSERT(rt->requestCount > 0);
rt->requestCount--;
JS_NOTIFY_REQUEST_DONE(rt);
JS_UNLOCK_GC(rt);
}
}
/* Yield to pending GC operations, regardless of request depth */
JS_PUBLIC_API(void)
JS_YieldRequest(JSContext *cx)
{
JSRuntime *rt;
CHECK_REQUEST(cx);
rt = cx->runtime;
JS_ASSERT(rt->requestCount > 0);
rt->requestCount--;
JS_NOTIFY_REQUEST_DONE(rt);
JS_UNLOCK_GC(rt);
JS_LOCK_GC(rt);
rt->requestCount++;
JS_UNLOCK_GC(rt);
}
/* Like JS_EndRequest, but don't notify any GC waiting in the wings. */
JS_PUBLIC_API(void)
JS_SuspendRequest(JSContext *cx)
{
JSRuntime *rt;
CHECK_REQUEST(cx);
cx->requestDepth--;
if (!cx->requestDepth) {
rt = cx->runtime;
JS_LOCK_GC(rt);
JS_ASSERT(rt->requestCount > 0);
rt->requestCount--;
JS_UNLOCK_GC(rt);
}
}
JS_PUBLIC_API(void)
JS_ResumeRequest(JSContext *cx)
{
JSRuntime *rt;
if (!cx->requestDepth) {
/* Wait until the GC is finished. */
rt = cx->runtime;
JS_LOCK_GC(rt);
while (rt->gcLevel > 0)
JS_AWAIT_GC_DONE(rt);
/* Indicate that a request is running. */
rt->requestCount++;
JS_UNLOCK_GC(rt);
}
cx->requestDepth++;
}
#endif /* JS_THREADSAFE */
JS_PUBLIC_API(void)
JS_Lock(JSRuntime *rt)
{
JS_LOCK_RUNTIME(rt);
}
JS_PUBLIC_API(void)
JS_Unlock(JSRuntime *rt)
{
JS_UNLOCK_RUNTIME(rt);
}
JS_PUBLIC_API(JSContext *)
JS_NewContext(JSRuntime *rt, size_t stacksize)
{
return js_NewContext(rt, stacksize);
}
JS_PUBLIC_API(void)
JS_DestroyContext(JSContext *cx)
{
js_DestroyContext(cx);
}
JS_PUBLIC_API(void*)
JS_GetContextPrivate(JSContext *cx)
{
return cx->data;
}
JS_PUBLIC_API(void)
JS_SetContextPrivate(JSContext *cx, void *data)
{
cx->data = data;
}
JS_PUBLIC_API(JSRuntime *)
JS_GetRuntime(JSContext *cx)
{
return cx->runtime;
}
JS_PUBLIC_API(JSContext *)
JS_ContextIterator(JSRuntime *rt, JSContext **iterp)
{
return js_ContextIterator(rt, iterp);
}
JS_PUBLIC_API(JSVersion)
JS_GetVersion(JSContext *cx)
{
return cx->version;
}
JS_PUBLIC_API(JSVersion)
JS_SetVersion(JSContext *cx, JSVersion version)
{
JSVersion oldVersion;
CHECK_REQUEST(cx);
oldVersion = cx->version;
if (version == oldVersion)
return oldVersion;
cx->version = version;
#if !JS_BUG_FALLIBLE_EQOPS
if (cx->version == JSVERSION_1_2) {
cx->jsop_eq = JSOP_NEW_EQ;
cx->jsop_ne = JSOP_NEW_NE;
} else {
cx->jsop_eq = JSOP_EQ;
cx->jsop_ne = JSOP_NE;
}
#endif /* !JS_BUG_FALLIBLE_EQOPS */
#if JS_HAS_EXPORT_IMPORT
/* XXX this might fail due to low memory */
js_InitScanner(cx);
#endif /* JS_HAS_EXPORT_IMPORT */
return oldVersion;
}
JS_PUBLIC_API(const char *)
JS_GetImplementationVersion(void)
{
return "JavaScript-C 1.4 release 1 1998 10 31";
}
JS_PUBLIC_API(JSObject *)
JS_GetGlobalObject(JSContext *cx)
{
return cx->globalObject;
}
JS_PUBLIC_API(void)
JS_SetGlobalObject(JSContext *cx, JSObject *obj)
{
cx->globalObject = obj;
}
JS_PUBLIC_API(JSBool)
JS_InitStandardClasses(JSContext *cx, JSObject *obj)
{
JSObject *fun_proto, *obj_proto, *array_proto;
CHECK_REQUEST(cx);
/* If cx has no global object, use obj so prototypes can be found. */
if (!cx->globalObject)
cx->globalObject = obj;
#if JS_HAS_UNDEFINED
/* Define a top-level property 'undefined' with the undefined value.
* (proposed ECMA v2.)
*/
if (!OBJ_DEFINE_PROPERTY(cx, obj,
(jsid)cx->runtime->atomState.typeAtoms[JSTYPE_VOID],
JSVAL_VOID, NULL, NULL, 0, NULL))
return JS_FALSE;
#endif
/* Initialize the function class first so constructors can be made. */
fun_proto = js_InitFunctionClass(cx, obj);
if (!fun_proto)
return JS_FALSE;
/* Initialize the object class next so Object.prototype works. */
obj_proto = js_InitObjectClass(cx, obj);
if (!obj_proto)
return JS_FALSE;
/* Function.prototype and the global object delegate to Object.prototype. */
OBJ_SET_PROTO(cx, fun_proto, obj_proto);
if (!OBJ_GET_PROTO(cx, obj))
OBJ_SET_PROTO(cx, obj, obj_proto);
/* Initialize the rest of the standard objects and functions. */
return (array_proto = js_InitArrayClass(cx, obj)) != NULL &&
js_InitArgsCallClosureClasses(cx, obj, obj_proto) &&
js_InitBooleanClass(cx, obj) &&
js_InitMathClass(cx, obj) &&
js_InitNumberClass(cx, obj) &&
js_InitStringClass(cx, obj) &&
#if JS_HAS_REGEXPS
js_InitRegExpClass(cx, obj) &&
#endif
#if JS_HAS_SCRIPT_OBJECT
js_InitScriptClass(cx, obj) &&
#endif
#if JS_HAS_ERROR_EXCEPTIONS
js_InitExceptionClasses(cx, obj) &&
#endif
#if JS_HAS_FILE_OBJECT
js_InitFileClass(cx, obj) &&
#endif
js_InitDateClass(cx, obj);
}
JS_PUBLIC_API(JSObject *)
JS_GetScopeChain(JSContext *cx)
{
CHECK_REQUEST(cx);
return cx->fp ? cx->fp->scopeChain : NULL;
}
JS_PUBLIC_API(void *)
JS_malloc(JSContext *cx, size_t nbytes)
{
void *p;
#if defined(XP_OS2) || defined(XP_MAC) || defined(AIX) || defined(OSF1)
if (nbytes == 0) /*DSR072897 - Windows allows this, OS/2 & Mac don't*/
nbytes = 1;
#endif
p = malloc(nbytes);
if (!p)
JS_ReportOutOfMemory(cx);
return p;
}
JS_PUBLIC_API(void *)
JS_realloc(JSContext *cx, void *p, size_t nbytes)
{
p = realloc(p, nbytes);
if (!p)
JS_ReportOutOfMemory(cx);
return p;
}
JS_PUBLIC_API(void)
JS_free(JSContext *cx, void *p)
{
if (p)
free(p);
}
JS_PUBLIC_API(char *)
JS_strdup(JSContext *cx, const char *s)
{
char *p = JS_malloc(cx, strlen(s) + 1);
if (!p)
return NULL;
return strcpy(p, s);
}
JS_PUBLIC_API(jsdouble *)
JS_NewDouble(JSContext *cx, jsdouble d)
{
CHECK_REQUEST(cx);
return js_NewDouble(cx, d);
}
JS_PUBLIC_API(JSBool)
JS_NewDoubleValue(JSContext *cx, jsdouble d, jsval *rval)
{
CHECK_REQUEST(cx);
return js_NewDoubleValue(cx, d, rval);
}
JS_PUBLIC_API(JSBool)
JS_NewNumberValue(JSContext *cx, jsdouble d, jsval *rval)
{
CHECK_REQUEST(cx);
return js_NewNumberValue(cx, d, rval);
}
JS_PUBLIC_API(JSBool)
JS_AddRoot(JSContext *cx, void *rp)
{
CHECK_REQUEST(cx);
return js_AddRoot(cx, rp, NULL);
}
JS_PUBLIC_API(JSBool)
JS_RemoveRoot(JSContext *cx, void *rp)
{
CHECK_REQUEST(cx);
return js_RemoveRoot(cx, rp);
}
JS_PUBLIC_API(JSBool)
JS_AddNamedRoot(JSContext *cx, void *rp, const char *name)
{
CHECK_REQUEST(cx);
return js_AddRoot(cx, rp, name);
}
#ifdef DEBUG
#include "jshash.h" /* Added by JSIFY */
typedef struct NamedRootDumpArgs {
void (*dump)(const char *name, void *rp, void *data);
void *data;
} NamedRootDumpArgs;
JS_STATIC_DLL_CALLBACK(intN)
js_named_root_dumper(JSHashEntry *he, intN i, void *arg)
{
NamedRootDumpArgs *args = arg;
if (he->value)
args->dump(he->value, (void *)he->key, args->data);
return HT_ENUMERATE_NEXT;
}
JS_PUBLIC_API(void)
JS_DumpNamedRoots(JSRuntime *rt,
void (*dump)(const char *name, void *rp, void *data),
void *data)
{
NamedRootDumpArgs args;
args.dump = dump;
args.data = data;
JS_HashTableEnumerateEntries(rt->gcRootsHash, js_named_root_dumper, &args);
}
#endif /* DEBUG */
JS_PUBLIC_API(JSBool)
JS_LockGCThing(JSContext *cx, void *thing)
{
JSBool ok;
CHECK_REQUEST(cx);
ok = js_LockGCThing(cx, thing);
if (!ok)
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CANT_LOCK);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_UnlockGCThing(JSContext *cx, void *thing)
{
JSBool ok;
CHECK_REQUEST(cx);
ok = js_UnlockGCThing(cx, thing);
if (!ok)
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CANT_UNLOCK);
return ok;
}
JS_PUBLIC_API(void)
JS_GC(JSContext *cx)
{
if (!cx->fp)
JS_FinishArenaPool(&cx->stackPool);
JS_FinishArenaPool(&cx->codePool);
JS_FinishArenaPool(&cx->tempPool);
js_ForceGC(cx);
}
JS_PUBLIC_API(void)
JS_MaybeGC(JSContext *cx)
{
JSRuntime *rt;
uint32 bytes, lastBytes;
rt = cx->runtime;
bytes = rt->gcBytes;
lastBytes = rt->gcLastBytes;
if (bytes > 8192 && bytes > lastBytes + lastBytes / 2)
JS_GC(cx);
}
JS_PUBLIC_API(JSGCCallback)
JS_SetGCCallback(JSContext *cx, JSGCCallback cb)
{
JSRuntime *rt;
JSGCCallback oldcb;
rt = cx->runtime;
oldcb = rt->gcCallback;
rt->gcCallback = cb;
return oldcb;
}
/************************************************************************/
JS_PUBLIC_API(void)
JS_DestroyIdArray(JSContext *cx, JSIdArray *ida)
{
JS_free(cx, ida);
}
JS_PUBLIC_API(JSBool)
JS_ValueToId(JSContext *cx, jsval v, jsid *idp)
{
JSAtom *atom;
CHECK_REQUEST(cx);
if (JSVAL_IS_INT(v)) {
*idp = v;
} else {
atom = js_ValueToStringAtom(cx, v);
if (!atom)
return JS_FALSE;
*idp = (jsid)atom;
}
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_IdToValue(JSContext *cx, jsid id, jsval *vp)
{
CHECK_REQUEST(cx);
*vp = js_IdToValue(id);
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_PropertyStub(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
CHECK_REQUEST(cx);
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_EnumerateStub(JSContext *cx, JSObject *obj)
{
CHECK_REQUEST(cx);
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_ResolveStub(JSContext *cx, JSObject *obj, jsval id)
{
CHECK_REQUEST(cx);
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_ConvertStub(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
{
CHECK_REQUEST(cx);
#if JS_BUG_EAGER_TOSTRING
if (type == JSTYPE_STRING)
return JS_TRUE;
#endif
return js_TryValueOf(cx, obj, type, vp);
}
JS_PUBLIC_API(void)
JS_FinalizeStub(JSContext *cx, JSObject *obj)
{
}
JS_PUBLIC_API(JSObject *)
JS_InitClass(JSContext *cx, JSObject *obj, JSObject *parent_proto,
JSClass *clasp, JSNative constructor, uintN nargs,
JSPropertySpec *ps, JSFunctionSpec *fs,
JSPropertySpec *static_ps, JSFunctionSpec *static_fs)
{
JSAtom *atom;
JSObject *proto, *ctor;
JSBool named;
JSFunction *fun;
jsval junk;
CHECK_REQUEST(cx);
atom = js_Atomize(cx, clasp->name, strlen(clasp->name), 0);
if (!atom)
return NULL;
/* Create a prototype object for this class. */
proto = js_NewObject(cx, clasp, parent_proto, obj);
if (!proto)
return NULL;
if (!constructor) {
/* Lacking a constructor, name the prototype (e.g., Math). */
named = OBJ_DEFINE_PROPERTY(cx, obj, (jsid)atom, OBJECT_TO_JSVAL(proto),
NULL, NULL, 0, NULL);
if (!named)
goto bad;
ctor = proto;
} else {
/* Define the constructor function in obj's scope. */
fun = js_DefineFunction(cx, obj, atom, constructor, nargs, 0);
named = (fun != NULL);
if (!fun)
goto bad;
/*
* Remember the class this function is a constructor for so that
* we know to create an object of this class when we call the
* constructor.
*/
fun->clasp = clasp;
/* Connect constructor and prototype by named properties. */
ctor = fun->object;
if (!js_SetClassPrototype(cx, ctor, proto,
JSPROP_READONLY | JSPROP_PERMANENT)) {
goto bad;
}
/* Bootstrap Function.prototype (see also JS_InitStandardClasses). */
if (OBJ_GET_CLASS(cx, ctor) == clasp) {
/* XXXMLM - this fails in framesets that are writing over
* themselves!
* JS_ASSERT(!OBJ_GET_PROTO(cx, ctor));
*/
OBJ_SET_PROTO(cx, ctor, proto);
}
}
/* Add properties and methods to the prototype and the constructor. */
if ((ps && !JS_DefineProperties(cx, proto, ps)) ||
(fs && !JS_DefineFunctions(cx, proto, fs)) ||
(static_ps && !JS_DefineProperties(cx, ctor, static_ps)) ||
(static_fs && !JS_DefineFunctions(cx, ctor, static_fs))) {
goto bad;
}
return proto;
bad:
if (named)
(void) OBJ_DELETE_PROPERTY(cx, obj, (jsid)atom, &junk);
cx->newborn[GCX_OBJECT] = NULL;
return NULL;
}
#ifdef JS_THREADSAFE
JS_PUBLIC_API(JSClass *)
JS_GetClass(JSContext *cx, JSObject *obj)
{
CHECK_REQUEST(cx);
return OBJ_GET_CLASS(cx, obj);
}
#else
JS_PUBLIC_API(JSClass *)
JS_GetClass(JSObject *obj)
{
CHECK_REQUEST(cx);
return LOCKED_OBJ_GET_CLASS(obj);
}
#endif
JS_PUBLIC_API(JSBool)
JS_InstanceOf(JSContext *cx, JSObject *obj, JSClass *clasp, jsval *argv)
{
JSFunction *fun;
CHECK_REQUEST(cx);
if (OBJ_GET_CLASS(cx, obj) == clasp)
return JS_TRUE;
if (argv) {
fun = js_ValueToFunction(cx, &argv[-2], JS_FALSE);
if (fun) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO,
clasp->name, JS_GetFunctionName(fun),
OBJ_GET_CLASS(cx, obj)->name);
}
}
return JS_FALSE;
}
JS_PUBLIC_API(void *)
JS_GetPrivate(JSContext *cx, JSObject *obj)
{
jsval v;
CHECK_REQUEST(cx);
JS_ASSERT(OBJ_GET_CLASS(cx, obj)->flags & JSCLASS_HAS_PRIVATE);
v = OBJ_GET_SLOT(cx, obj, JSSLOT_PRIVATE);
if (!JSVAL_IS_INT(v))
return NULL;
return JSVAL_TO_PRIVATE(v);
}
JS_PUBLIC_API(JSBool)
JS_SetPrivate(JSContext *cx, JSObject *obj, void *data)
{
CHECK_REQUEST(cx);
JS_ASSERT(OBJ_GET_CLASS(cx, obj)->flags & JSCLASS_HAS_PRIVATE);
OBJ_SET_SLOT(cx, obj, JSSLOT_PRIVATE, PRIVATE_TO_JSVAL(data));
return JS_TRUE;
}
JS_PUBLIC_API(void *)
JS_GetInstancePrivate(JSContext *cx, JSObject *obj, JSClass *clasp,
jsval *argv)
{
CHECK_REQUEST(cx);
if (!JS_InstanceOf(cx, obj, clasp, argv))
return NULL;
return JS_GetPrivate(cx, obj);
}
JS_PUBLIC_API(JSObject *)
JS_GetPrototype(JSContext *cx, JSObject *obj)
{
JSObject *proto;
CHECK_REQUEST(cx);
proto = JSVAL_TO_OBJECT(OBJ_GET_SLOT(cx, obj, JSSLOT_PROTO));
/* Beware ref to dead object (we may be called from obj's finalizer). */
return proto && proto->map ? proto : NULL;
}
JS_PUBLIC_API(JSBool)
JS_SetPrototype(JSContext *cx, JSObject *obj, JSObject *proto)
{
CHECK_REQUEST(cx);
OBJ_SET_SLOT(cx, obj, JSSLOT_PROTO, OBJECT_TO_JSVAL(proto));
return JS_TRUE;
}
JS_PUBLIC_API(JSObject *)
JS_GetParent(JSContext *cx, JSObject *obj)
{
JSObject *parent;
CHECK_REQUEST(cx);
parent = JSVAL_TO_OBJECT(OBJ_GET_SLOT(cx, obj, JSSLOT_PARENT));
/* Beware ref to dead object (we may be called from obj's finalizer). */
return parent && parent->map ? parent : NULL;
}
JS_PUBLIC_API(JSBool)
JS_SetParent(JSContext *cx, JSObject *obj, JSObject *parent)
{
CHECK_REQUEST(cx);
OBJ_SET_SLOT(cx, obj, JSSLOT_PARENT, OBJECT_TO_JSVAL(parent));
return JS_TRUE;
}
JS_PUBLIC_API(JSObject *)
JS_GetConstructor(JSContext *cx, JSObject *proto)
{
JSBool ok;
jsval cval;
CHECK_REQUEST(cx);
ok = OBJ_GET_PROPERTY(cx, proto,
(jsid)cx->runtime->atomState.constructorAtom,
&cval);
if (!ok)
return NULL;
if (!JSVAL_IS_FUNCTION(cx, cval)) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_NO_CONSTRUCTOR,
OBJ_GET_CLASS(cx, proto)->name);
return NULL;
}
return JSVAL_TO_OBJECT(cval);
}
JS_PUBLIC_API(JSObject *)
JS_NewObject(JSContext *cx, JSClass *clasp, JSObject *proto, JSObject *parent)
{
CHECK_REQUEST(cx);
return js_NewObject(cx, clasp, proto, parent);
}
JS_PUBLIC_API(JSObject *)
JS_ConstructObject(JSContext *cx, JSClass *clasp, JSObject *proto,
JSObject *parent)
{
CHECK_REQUEST(cx);
return js_ConstructObject(cx, clasp, proto, parent);
}
static JSBool
DefineProperty(JSContext *cx, JSObject *obj, const char *name, jsval value,
JSPropertyOp getter, JSPropertyOp setter, uintN attrs,
JSProperty **propp)
{
jsid id;
JSAtom *atom;
if (attrs & JSPROP_INDEX) {
id = INT_TO_JSVAL((jsint)name);
atom = NULL;
} else {
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return JS_FALSE;
id = (jsid)atom;
}
return OBJ_DEFINE_PROPERTY(cx, obj, id, value, getter, setter, attrs,
propp);
}
#define AUTO_NAMELEN(s,n) (((n) == (size_t)-1) ? js_strlen(s) : (n))
static JSBool
DefineUCProperty(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen, jsval value,
JSPropertyOp getter, JSPropertyOp setter, uintN attrs,
JSProperty **propp)
{
JSAtom *atom;
atom = js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0);
if (!atom)
return JS_FALSE;
return OBJ_DEFINE_PROPERTY(cx, obj, (jsid)atom, value, getter, setter,
attrs, propp);
}
JS_PUBLIC_API(JSObject *)
JS_DefineObject(JSContext *cx, JSObject *obj, const char *name, JSClass *clasp,
JSObject *proto, uintN attrs)
{
JSObject *nobj;
CHECK_REQUEST(cx);
nobj = js_NewObject(cx, clasp, proto, obj);
if (!nobj)
return NULL;
if (!DefineProperty(cx, obj, name, OBJECT_TO_JSVAL(nobj), NULL, NULL, attrs,
NULL)) {
cx->newborn[GCX_OBJECT] = NULL;
return NULL;
}
return nobj;
}
JS_PUBLIC_API(JSBool)
JS_DefineConstDoubles(JSContext *cx, JSObject *obj, JSConstDoubleSpec *cds)
{
JSBool ok;
jsval value;
uintN flags;
CHECK_REQUEST(cx);
for (ok = JS_TRUE; cds->name; cds++) {
#if JS_ALIGN_OF_DOUBLE == 8
/*
* The GC ignores references outside its pool such as &cds->dval,
* so we don't need to GC-alloc constant doubles.
*/
jsdouble d = cds->dval;
jsint i;
value = (JSDOUBLE_IS_INT(d, i) && INT_FITS_IN_JSVAL(i))
? INT_TO_JSVAL(i)
: DOUBLE_TO_JSVAL(&cds->dval);
#else
ok = js_NewNumberValue(cx, cds->dval, &value);
if (!ok)
break;
#endif
flags = cds->flags;
if (!flags)
flags = JSPROP_READONLY | JSPROP_PERMANENT;
ok = DefineProperty(cx, obj, cds->name, value, NULL, NULL, flags, NULL);
if (!ok)
break;
}
return ok;
}
JS_PUBLIC_API(JSBool)
JS_DefineProperties(JSContext *cx, JSObject *obj, JSPropertySpec *ps)
{
JSBool ok;
JSProperty *prop;
JSScopeProperty *sprop;
CHECK_REQUEST(cx);
for (ok = JS_TRUE; ps->name; ps++) {
ok = DefineProperty(cx, obj, ps->name, JSVAL_VOID,
ps->getter, ps->setter, ps->flags,
&prop);
if (!ok)
break;
if (prop) {
if (OBJ_IS_NATIVE(obj)) {
sprop = (JSScopeProperty *)prop;
sprop->id = INT_TO_JSVAL(ps->tinyid);
sprop->attrs |= JSPROP_TINYIDHACK;
}
OBJ_DROP_PROPERTY(cx, obj, prop);
}
}
return ok;
}
JS_PUBLIC_API(JSBool)
JS_DefineProperty(JSContext *cx, JSObject *obj, const char *name, jsval value,
JSPropertyOp getter, JSPropertyOp setter, uintN attrs)
{
CHECK_REQUEST(cx);
return DefineProperty(cx, obj, name, value, getter, setter, attrs, NULL);
}
JS_PUBLIC_API(JSBool)
JS_DefinePropertyWithTinyId(JSContext *cx, JSObject *obj, const char *name,
int8 tinyid, jsval value,
JSPropertyOp getter, JSPropertyOp setter,
uintN attrs)
{
JSBool ok;
JSProperty *prop;
JSScopeProperty *sprop;
CHECK_REQUEST(cx);
ok = DefineProperty(cx, obj, name, value, getter, setter, attrs, &prop);
if (ok && prop) {
if (OBJ_IS_NATIVE(obj)) {
sprop = (JSScopeProperty *)prop;
sprop->id = INT_TO_JSVAL(tinyid);
sprop->attrs |= JSPROP_TINYIDHACK;
}
OBJ_DROP_PROPERTY(cx, obj, prop);
}
return ok;
}
static JSBool
LookupProperty(JSContext *cx, JSObject *obj, const char *name, JSObject **objp,
JSProperty **propp)
{
JSAtom *atom;
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return JS_FALSE;
return OBJ_LOOKUP_PROPERTY(cx, obj, (jsid)atom, objp, propp);
}
static JSBool
LookupUCProperty(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
JSObject **objp, JSProperty **propp)
{
JSAtom *atom;
atom = js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0);
if (!atom)
return JS_FALSE;
return OBJ_LOOKUP_PROPERTY(cx, obj, (jsid)atom, objp, propp);
}
JS_PUBLIC_API(JSBool)
JS_AliasProperty(JSContext *cx, JSObject *obj, const char *name,
const char *alias)
{
JSObject *obj2;
JSProperty *prop;
JSAtom *atom;
JSScope *scope;
JSBool ok;
CHECK_REQUEST(cx);
/* XXXbe push this into jsobj.c or jsscope.c */
if (!LookupProperty(cx, obj, name, &obj2, &prop))
return JS_FALSE;
if (!prop) {
js_ReportIsNotDefined(cx, name);
return JS_FALSE;
}
if (obj2 != obj || !OBJ_IS_NATIVE(obj2)) {
OBJ_DROP_PROPERTY(cx, obj2, prop);
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CANT_ALIAS,
alias, name, OBJ_GET_CLASS(cx, obj2)->name);
return JS_FALSE;
}
atom = js_Atomize(cx, alias, strlen(alias), 0);
if (!atom) {
ok = JS_FALSE;
} else {
scope = (JSScope *) obj->map;
ok = (scope->ops->add(cx, scope, (jsid)atom, (JSScopeProperty *)prop)
!= NULL);
}
OBJ_DROP_PROPERTY(cx, obj, prop);
return ok;
}
static jsval
LookupResult(JSContext *cx, JSObject *obj, JSObject *obj2, JSProperty *prop)
{
JSScopeProperty *sprop;
jsval rval;
if (!prop) {
/* XXX bad API: no way to tell "not defined" from "void value" */
return JSVAL_VOID;
}
if (OBJ_IS_NATIVE(obj2)) {
/* Peek at the native property's slot value, without doing a Get. */
sprop = (JSScopeProperty *)prop;
rval = LOCKED_OBJ_GET_SLOT(obj2, sprop->slot);
} else {
/* XXX bad API: no way to return "defined but value unknown" */
rval = JSVAL_TRUE;
}
OBJ_DROP_PROPERTY(cx, obj2, prop);
return rval;
}
static JSBool
GetPropertyAttributes(JSContext *cx, JSObject *obj, JSAtom *atom,
uintN *attrsp, JSBool *foundp)
{
JSObject *obj2;
JSProperty *prop;
JSBool ok;
if (!atom)
return JS_FALSE;
if (!OBJ_LOOKUP_PROPERTY(cx, obj, (jsid)atom, &obj2, &prop))
return JS_FALSE;
if (!prop || obj != obj2) {
*foundp = JS_FALSE;
if (prop)
OBJ_DROP_PROPERTY(cx, obj2, prop);
return JS_TRUE;
}
*foundp = JS_TRUE;
ok = OBJ_GET_ATTRIBUTES(cx, obj, (jsid)atom, prop, attrsp);
OBJ_DROP_PROPERTY(cx, obj, prop);
return ok;
}
static JSBool
SetPropertyAttributes(JSContext *cx, JSObject *obj, JSAtom *atom,
uintN attrs, JSBool *foundp)
{
JSObject *obj2;
JSProperty *prop;
JSBool ok;
if (!atom)
return JS_FALSE;
if (!OBJ_LOOKUP_PROPERTY(cx, obj, (jsid)atom, &obj2, &prop))
return JS_FALSE;
if (!prop || obj != obj2) {
*foundp = JS_FALSE;
if (prop)
OBJ_DROP_PROPERTY(cx, obj2, prop);
return JS_TRUE;
}
*foundp = JS_TRUE;
ok = OBJ_SET_ATTRIBUTES(cx, obj, (jsid)atom, prop, &attrs);
OBJ_DROP_PROPERTY(cx, obj, prop);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_GetPropertyAttributes(JSContext *cx, JSObject *obj, const char *name,
uintN *attrsp, JSBool *foundp)
{
CHECK_REQUEST(cx);
return GetPropertyAttributes(cx, obj,
js_Atomize(cx, name, strlen(name), 0),
attrsp, foundp);
}
JS_PUBLIC_API(JSBool)
JS_SetPropertyAttributes(JSContext *cx, JSObject *obj, const char *name,
uintN attrs, JSBool *foundp)
{
CHECK_REQUEST(cx);
return SetPropertyAttributes(cx, obj,
js_Atomize(cx, name, strlen(name), 0),
attrs, foundp);
}
JS_PUBLIC_API(JSBool)
JS_LookupProperty(JSContext *cx, JSObject *obj, const char *name, jsval *vp)
{
JSBool ok;
JSObject *obj2;
JSProperty *prop;
CHECK_REQUEST(cx);
ok = LookupProperty(cx, obj, name, &obj2, &prop);
if (ok)
*vp = LookupResult(cx, obj, obj2, prop);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_GetProperty(JSContext *cx, JSObject *obj, const char *name, jsval *vp)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return JS_FALSE;
return OBJ_GET_PROPERTY(cx, obj, (jsid)atom, vp);
}
JS_PUBLIC_API(JSBool)
JS_SetProperty(JSContext *cx, JSObject *obj, const char *name, jsval *vp)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return JS_FALSE;
return OBJ_SET_PROPERTY(cx, obj, (jsid)atom, vp);
}
JS_PUBLIC_API(JSBool)
JS_DeleteProperty(JSContext *cx, JSObject *obj, const char *name)
{
jsval junk;
CHECK_REQUEST(cx);
return JS_DeleteProperty2(cx, obj, name, &junk);
}
JS_PUBLIC_API(JSBool)
JS_DeleteProperty2(JSContext *cx, JSObject *obj, const char *name,
jsval *rval)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return JS_FALSE;
return OBJ_DELETE_PROPERTY(cx, obj, (jsid)atom, rval);
}
JS_PUBLIC_API(JSBool)
JS_DefineUCProperty(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen, jsval value,
JSPropertyOp getter, JSPropertyOp setter,
uintN attrs)
{
CHECK_REQUEST(cx);
return DefineUCProperty(cx, obj, name, namelen, value, getter, setter,
attrs, NULL);
}
JS_PUBLIC_API(JSBool)
JS_GetUCPropertyAttributes(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
uintN *attrsp, JSBool *foundp)
{
CHECK_REQUEST(cx);
return GetPropertyAttributes(cx, obj,
js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0),
attrsp, foundp);
}
JS_PUBLIC_API(JSBool)
JS_SetUCPropertyAttributes(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
uintN attrs, JSBool *foundp)
{
CHECK_REQUEST(cx);
return SetPropertyAttributes(cx, obj,
js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0),
attrs, foundp);
}
JS_PUBLIC_API(JSBool)
JS_DefineUCPropertyWithTinyId(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
int8 tinyid, jsval value,
JSPropertyOp getter, JSPropertyOp setter,
uintN attrs)
{
JSBool ok;
JSProperty *prop;
JSScopeProperty *sprop;
CHECK_REQUEST(cx);
ok = DefineUCProperty(cx, obj, name, namelen, value, getter, setter, attrs,
&prop);
if (ok && prop) {
if (OBJ_IS_NATIVE(obj)) {
sprop = (JSScopeProperty *)prop;
sprop->id = INT_TO_JSVAL(tinyid);
sprop->attrs |= JSPROP_TINYIDHACK;
}
OBJ_DROP_PROPERTY(cx, obj, prop);
}
return ok;
}
JS_PUBLIC_API(JSBool)
JS_LookupUCProperty(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
jsval *vp)
{
JSBool ok;
JSObject *obj2;
JSProperty *prop;
CHECK_REQUEST(cx);
ok = LookupUCProperty(cx, obj, name, namelen, &obj2, &prop);
if (ok)
*vp = LookupResult(cx, obj, obj2, prop);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_GetUCProperty(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
jsval *vp)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0);
if (!atom)
return JS_FALSE;
return OBJ_GET_PROPERTY(cx, obj, (jsid)atom, vp);
}
JS_PUBLIC_API(JSBool)
JS_SetUCProperty(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
jsval *vp)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0);
if (!atom)
return JS_FALSE;
return OBJ_SET_PROPERTY(cx, obj, (jsid)atom, vp);
}
JS_PUBLIC_API(JSBool)
JS_DeleteUCProperty2(JSContext *cx, JSObject *obj,
const jschar *name, size_t namelen,
jsval *rval)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_AtomizeChars(cx, name, AUTO_NAMELEN(name,namelen), 0);
if (!atom)
return JS_FALSE;
return OBJ_DELETE_PROPERTY(cx, obj, (jsid)atom, rval);
}
JS_PUBLIC_API(JSObject *)
JS_NewArrayObject(JSContext *cx, jsint length, jsval *vector)
{
CHECK_REQUEST(cx);
/* jsuint cast does ToUint32 */
return js_NewArrayObject(cx, (jsuint)length, vector);
}
JS_PUBLIC_API(JSBool)
JS_IsArrayObject(JSContext *cx, JSObject *obj)
{
CHECK_REQUEST(cx);
return OBJ_GET_CLASS(cx, obj) == &js_ArrayClass;
}
JS_PUBLIC_API(JSBool)
JS_GetArrayLength(JSContext *cx, JSObject *obj, jsuint *lengthp)
{
CHECK_REQUEST(cx);
return js_GetLengthProperty(cx, obj, lengthp);
}
JS_PUBLIC_API(JSBool)
JS_SetArrayLength(JSContext *cx, JSObject *obj, jsuint length)
{
CHECK_REQUEST(cx);
return js_SetLengthProperty(cx, obj, length);
}
JS_PUBLIC_API(JSBool)
JS_HasArrayLength(JSContext *cx, JSObject *obj, jsuint *lengthp)
{
CHECK_REQUEST(cx);
return js_HasLengthProperty(cx, obj, lengthp);
}
JS_PUBLIC_API(JSBool)
JS_DefineElement(JSContext *cx, JSObject *obj, jsint index, jsval value,
JSPropertyOp getter, JSPropertyOp setter, uintN attrs)
{
CHECK_REQUEST(cx);
return OBJ_DEFINE_PROPERTY(cx, obj, INT_TO_JSVAL(index), value,
getter, setter, attrs, NULL);
}
JS_PUBLIC_API(JSBool)
JS_AliasElement(JSContext *cx, JSObject *obj, const char *name, jsint alias)
{
JSObject *obj2;
JSProperty *prop;
JSScope *scope;
JSBool ok;
CHECK_REQUEST(cx);
/* XXXbe push this into jsobj.c or jsscope.c */
if (!LookupProperty(cx, obj, name, &obj2, &prop))
return JS_FALSE;
if (!prop) {
js_ReportIsNotDefined(cx, name);
return JS_FALSE;
}
if (obj2 != obj || !OBJ_IS_NATIVE(obj2)) {
char numBuf[12];
OBJ_DROP_PROPERTY(cx, obj2, prop);
JS_snprintf(numBuf, sizeof numBuf, "%ld", (long)alias);
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CANT_ALIAS,
numBuf, name, OBJ_GET_CLASS(cx, obj2)->name);
return JS_FALSE;
}
scope = (JSScope *) obj->map;
ok = (scope->ops->add(cx, scope, INT_TO_JSVAL(alias),
(JSScopeProperty *)prop)
!= NULL);
OBJ_DROP_PROPERTY(cx, obj, prop);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_LookupElement(JSContext *cx, JSObject *obj, jsint index, jsval *vp)
{
JSBool ok;
JSObject *obj2;
JSProperty *prop;
CHECK_REQUEST(cx);
ok = OBJ_LOOKUP_PROPERTY(cx, obj, INT_TO_JSVAL(index), &obj2, &prop);
if (ok)
*vp = LookupResult(cx, obj, obj2, prop);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_GetElement(JSContext *cx, JSObject *obj, jsint index, jsval *vp)
{
CHECK_REQUEST(cx);
return OBJ_GET_PROPERTY(cx, obj, INT_TO_JSVAL(index), vp);
}
JS_PUBLIC_API(JSBool)
JS_SetElement(JSContext *cx, JSObject *obj, jsint index, jsval *vp)
{
CHECK_REQUEST(cx);
return OBJ_SET_PROPERTY(cx, obj, INT_TO_JSVAL(index), vp);
}
JS_PUBLIC_API(JSBool)
JS_DeleteElement(JSContext *cx, JSObject *obj, jsint index)
{
jsval junk;
CHECK_REQUEST(cx);
return JS_DeleteElement2(cx, obj, index, &junk);
}
JS_PUBLIC_API(JSBool)
JS_DeleteElement2(JSContext *cx, JSObject *obj, jsint index, jsval *rval)
{
CHECK_REQUEST(cx);
return OBJ_DELETE_PROPERTY(cx, obj, INT_TO_JSVAL(index), rval);
}
JS_PUBLIC_API(void)
JS_ClearScope(JSContext *cx, JSObject *obj)
{
JSObjectMap *map;
JSScope *scope;
CHECK_REQUEST(cx);
/* XXXbe push this into jsobj.c or jsscope.c */
JS_LOCK_OBJ(cx, obj);
map = obj->map;
if (MAP_IS_NATIVE(map)) {
scope = (JSScope *)map;
scope->ops->clear(cx, scope);
}
/* Reset freeslot so we're consistent. */
map->freeslot = JSSLOT_FREE(OBJ_GET_CLASS(cx, obj));
JS_UNLOCK_OBJ(cx, obj);
}
JS_PUBLIC_API(JSIdArray *)
JS_Enumerate(JSContext *cx, JSObject *obj)
{
jsint i, n;
jsval iter_state, num_properties;
jsid id;
JSIdArray *ida;
jsval *vector;
CHECK_REQUEST(cx);
ida = NULL;
iter_state = JSVAL_NULL;
/* Get the number of properties to enumerate. */
if (!OBJ_ENUMERATE(cx, obj, JSENUMERATE_INIT, &iter_state, &num_properties))
goto error;
if (!JSVAL_IS_INT(num_properties)) {
JS_ASSERT(0);
goto error;
}
n = JSVAL_TO_INT(num_properties);
/* Create an array of jsids large enough to hold all the properties */
ida = js_NewIdArray(cx, n);
if (n) {
i = 0;
vector = &ida->vector[0];
while (1) {
if (!OBJ_ENUMERATE(cx, obj, JSENUMERATE_NEXT, &iter_state, &id))
goto error;
/* No more jsid's to enumerate ? */
if (iter_state == JSVAL_NULL)
break;
vector[i++] = id;
}
}
return ida;
error:
if (iter_state != JSVAL_NULL)
OBJ_ENUMERATE(cx, obj, JSENUMERATE_DESTROY, &iter_state, 0);
if (ida)
JS_DestroyIdArray(cx, ida);
return NULL;
}
JS_PUBLIC_API(JSBool)
JS_CheckAccess(JSContext *cx, JSObject *obj, jsid id, JSAccessMode mode,
jsval *vp, uintN *attrsp)
{
CHECK_REQUEST(cx);
return OBJ_CHECK_ACCESS(cx, obj, id, mode, vp, attrsp);
}
JS_PUBLIC_API(JSFunction *)
JS_NewFunction(JSContext *cx, JSNative call, uintN nargs, uintN flags,
JSObject *parent, const char *name)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = NULL;
if (name) {
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return NULL;
}
return js_NewFunction(cx, NULL, call, nargs, flags, parent, atom);
}
JS_PUBLIC_API(JSObject *)
JS_CloneFunctionObject(JSContext *cx, JSObject *funobj, JSObject *parent)
{
JSFunction *fun;
JSObject *newfunobj;
CHECK_REQUEST(cx);
if (OBJ_GET_CLASS(cx, funobj) != &js_FunctionClass) {
/* Indicate we cannot clone this object */
return funobj;
}
fun = JS_GetPrivate(cx, funobj);
newfunobj = js_NewObject(cx, &js_FunctionClass, funobj, parent);
if (!newfunobj)
return NULL;
if (!js_LinkFunctionObject(cx, fun, newfunobj)) {
cx->newborn[GCX_OBJECT] = NULL;
return NULL;
}
return newfunobj;
}
JS_PUBLIC_API(JSObject *)
JS_GetFunctionObject(JSFunction *fun)
{
return fun->object;
}
JS_PUBLIC_API(const char *)
JS_GetFunctionName(JSFunction *fun)
{
return fun->atom
? JS_GetStringBytes(ATOM_TO_STRING(fun->atom))
: js_anonymous_str;
}
JS_PUBLIC_API(JSBool)
JS_DefineFunctions(JSContext *cx, JSObject *obj, JSFunctionSpec *fs)
{
JSFunction *fun;
CHECK_REQUEST(cx);
for (; fs->name; fs++) {
fun = JS_DefineFunction(cx, obj, fs->name, fs->call, fs->nargs,
fs->flags);
if (!fun)
return JS_FALSE;
fun->extra = fs->extra;
}
return JS_TRUE;
}
JS_PUBLIC_API(JSFunction *)
JS_DefineFunction(JSContext *cx, JSObject *obj, const char *name, JSNative call,
uintN nargs, uintN attrs)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_Atomize(cx, name, strlen(name), 0);
if (!atom)
return NULL;
return js_DefineFunction(cx, obj, atom, call, nargs, attrs);
}
static JSScript *
CompileTokenStream(JSContext *cx, JSObject *obj, JSTokenStream *ts,
void *tempMark)
{
JSCodeGenerator cg;
JSScript *script;
uintN lineno;
CHECK_REQUEST(cx);
if (!js_InitCodeGenerator(cx, &cg, ts->filename, ts->lineno,
ts->principals)) {
script = NULL;
goto out;
}
lineno = ts->lineno;
if (!js_CompileTokenStream(cx, obj, ts, &cg)) {
script = NULL;
goto out;
}
script = js_NewScriptFromCG(cx, &cg, NULL);
out:
if (!js_CloseTokenStream(cx, ts)) {
if (script)
js_DestroyScript(cx, script);
script = NULL;
}
cg.tempMark = tempMark;
js_FinishCodeGenerator(cx, &cg);
return script;
}
JS_PUBLIC_API(JSScript *)
JS_CompileScript(JSContext *cx, JSObject *obj,
const char *bytes, size_t length,
const char *filename, uintN lineno)
{
jschar *chars;
JSScript *script;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return NULL;
script = JS_CompileUCScript(cx, obj, chars, length, filename, lineno);
JS_free(cx, chars);
return script;
}
JS_PUBLIC_API(JSScript *)
JS_CompileScriptForPrincipals(JSContext *cx, JSObject *obj,
JSPrincipals *principals,
const char *bytes, size_t length,
const char *filename, uintN lineno)
{
jschar *chars;
JSScript *script;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return NULL;
script = JS_CompileUCScriptForPrincipals(cx, obj, principals,
chars, length, filename, lineno);
JS_free(cx, chars);
return script;
}
JS_PUBLIC_API(JSScript *)
JS_CompileUCScript(JSContext *cx, JSObject *obj,
const jschar *chars, size_t length,
const char *filename, uintN lineno)
{
CHECK_REQUEST(cx);
return JS_CompileUCScriptForPrincipals(cx, obj, NULL, chars, length,
filename, lineno);
}
JS_PUBLIC_API(JSScript *)
JS_CompileUCScriptForPrincipals(JSContext *cx, JSObject *obj,
JSPrincipals *principals,
const jschar *chars, size_t length,
const char *filename, uintN lineno)
{
void *mark;
JSTokenStream *ts;
CHECK_REQUEST(cx);
mark = JS_ARENA_MARK(&cx->tempPool);
ts = js_NewTokenStream(cx, chars, length, filename, lineno, principals);
if (!ts)
return NULL;
return CompileTokenStream(cx, obj, ts, mark);
}
#ifdef JSFILE
JS_PUBLIC_API(JSScript *)
JS_CompileFile(JSContext *cx, JSObject *obj, const char *filename)
{
void *mark;
JSTokenStream *ts;
CHECK_REQUEST(cx);
mark = JS_ARENA_MARK(&cx->tempPool);
ts = js_NewFileTokenStream(cx, filename, stdin);
if (!ts)
return NULL;
return CompileTokenStream(cx, obj, ts, mark);
}
#endif
JS_PUBLIC_API(JSObject *)
JS_NewScriptObject(JSContext *cx, JSScript *script)
{
JSObject *obj;
CHECK_REQUEST(cx);
obj = js_NewObject(cx, &js_ScriptClass, NULL, NULL);
if (!obj)
return NULL;
if (script) {
JS_SetPrivate(cx, obj, script);
script->object = obj;
}
return obj;
}
JS_PUBLIC_API(void)
JS_DestroyScript(JSContext *cx, JSScript *script)
{
CHECK_REQUEST(cx);
js_DestroyScript(cx, script);
}
JS_PUBLIC_API(JSFunction *)
JS_CompileFunction(JSContext *cx, JSObject *obj, const char *name,
uintN nargs, const char **argnames,
const char *bytes, size_t length,
const char *filename, uintN lineno)
{
jschar *chars;
JSFunction *fun;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return NULL;
fun = JS_CompileUCFunction(cx, obj, name, nargs, argnames, chars, length,
filename, lineno);
JS_free(cx, chars);
return fun;
}
JS_PUBLIC_API(JSFunction *)
JS_CompileFunctionForPrincipals(JSContext *cx, JSObject *obj,
JSPrincipals *principals, const char *name,
uintN nargs, const char **argnames,
const char *bytes, size_t length,
const char *filename, uintN lineno)
{
jschar *chars;
JSFunction *fun;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return NULL;
fun = JS_CompileUCFunctionForPrincipals(cx, obj, principals, name,
nargs, argnames, chars, length,
filename, lineno);
JS_free(cx, chars);
return fun;
}
JS_PUBLIC_API(JSFunction *)
JS_CompileUCFunction(JSContext *cx, JSObject *obj, const char *name,
uintN nargs, const char **argnames,
const jschar *chars, size_t length,
const char *filename, uintN lineno)
{
CHECK_REQUEST(cx);
return JS_CompileUCFunctionForPrincipals(cx, obj, NULL, name,
nargs, argnames,
chars, length,
filename, lineno);
}
JS_PUBLIC_API(JSFunction *)
JS_CompileUCFunctionForPrincipals(JSContext *cx, JSObject *obj,
JSPrincipals *principals, const char *name,
uintN nargs, const char **argnames,
const jschar *chars, size_t length,
const char *filename, uintN lineno)
{
void *mark;
JSTokenStream *ts;
JSFunction *fun;
JSAtom *funAtom, *argAtom;
uintN i;
JSScopeProperty *sprop;
jsval junk;
CHECK_REQUEST(cx);
mark = JS_ARENA_MARK(&cx->tempPool);
ts = js_NewTokenStream(cx, chars, length, filename, lineno, principals);
if (!ts) {
fun = NULL;
funAtom = NULL;
goto out;
}
funAtom = js_Atomize(cx, name, strlen(name), 0);
if (!funAtom) {
fun = NULL;
goto out;
}
fun = js_DefineFunction(cx, obj, funAtom, NULL, nargs, 0);
if (!fun)
goto out;
if (nargs) {
for (i = 0; i < nargs; i++) {
argAtom = js_Atomize(cx, argnames[i], strlen(argnames[i]), 0);
if (!argAtom)
break;
if (!js_DefineProperty(cx, fun->object, (jsid)argAtom,
JSVAL_VOID, js_GetArgument, js_SetArgument,
JSPROP_ENUMERATE|JSPROP_PERMANENT,
(JSProperty **)&sprop)) {
break;
}
JS_ASSERT(sprop);
sprop->id = INT_TO_JSVAL(i);
OBJ_DROP_PROPERTY(cx, fun->object, (JSProperty *)sprop);
}
if (i < nargs) {
(void) OBJ_DELETE_PROPERTY(cx, obj, (jsid)funAtom, &junk);
fun = NULL;
goto out;
}
}
if (!js_CompileFunctionBody(cx, ts, fun)) {
(void) OBJ_DELETE_PROPERTY(cx, obj, (jsid)funAtom, &junk);
fun = NULL;
}
out:
if (ts)
js_CloseTokenStream(cx, ts);
JS_ARENA_RELEASE(&cx->tempPool, mark);
return fun;
}
JS_PUBLIC_API(JSString *)
JS_DecompileScript(JSContext *cx, JSScript *script, const char *name,
uintN indent)
{
JSPrinter *jp;
JSString *str;
CHECK_REQUEST(cx);
jp = js_NewPrinter(cx, name, indent);
if (!jp)
return NULL;
if (js_DecompileScript(jp, script))
str = js_GetPrinterOutput(jp);
else
str = NULL;
js_DestroyPrinter(jp);
return str;
}
JS_PUBLIC_API(JSString *)
JS_DecompileFunction(JSContext *cx, JSFunction *fun, uintN indent)
{
JSPrinter *jp;
JSString *str;
CHECK_REQUEST(cx);
jp = js_NewPrinter(cx, JS_GetFunctionName(fun), indent);
if (!jp)
return NULL;
if (js_DecompileFunction(jp, fun, JS_TRUE))
str = js_GetPrinterOutput(jp);
else
str = NULL;
js_DestroyPrinter(jp);
return str;
}
JS_PUBLIC_API(JSString *)
JS_DecompileFunctionBody(JSContext *cx, JSFunction *fun, uintN indent)
{
JSPrinter *jp;
JSString *str;
CHECK_REQUEST(cx);
jp = js_NewPrinter(cx, JS_GetFunctionName(fun), indent);
if (!jp)
return NULL;
if (js_DecompileFunctionBody(jp, fun, JS_TRUE))
str = js_GetPrinterOutput(jp);
else
str = NULL;
js_DestroyPrinter(jp);
return str;
}
JS_PUBLIC_API(JSBool)
JS_ExecuteScript(JSContext *cx, JSObject *obj, JSScript *script, jsval *rval)
{
CHECK_REQUEST(cx);
if (!js_Execute(cx, obj, script, NULL, NULL, JS_FALSE, rval)) {
#if JS_HAS_EXCEPTIONS
js_ReportUncaughtException(cx);
#endif
return JS_FALSE;
}
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_EvaluateScript(JSContext *cx, JSObject *obj,
const char *bytes, uintN length,
const char *filename, uintN lineno,
jsval *rval)
{
jschar *chars;
JSBool ok;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return JS_FALSE;
ok = JS_EvaluateUCScript(cx, obj, chars, length, filename, lineno, rval);
JS_free(cx, chars);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_EvaluateScriptForPrincipals(JSContext *cx, JSObject *obj,
JSPrincipals *principals,
const char *bytes, uintN length,
const char *filename, uintN lineno,
jsval *rval)
{
jschar *chars;
JSBool ok;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return JS_FALSE;
ok = JS_EvaluateUCScriptForPrincipals(cx, obj, principals, chars, length,
filename, lineno, rval);
JS_free(cx, chars);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_EvaluateUCScript(JSContext *cx, JSObject *obj,
const jschar *chars, uintN length,
const char *filename, uintN lineno,
jsval *rval)
{
CHECK_REQUEST(cx);
return JS_EvaluateUCScriptForPrincipals(cx, obj, NULL, chars, length,
filename, lineno, rval);
}
JS_PUBLIC_API(JSBool)
JS_EvaluateUCScriptForPrincipals(JSContext *cx, JSObject *obj,
JSPrincipals *principals,
const jschar *chars, uintN length,
const char *filename, uintN lineno,
jsval *rval)
{
JSScript *script;
JSBool ok;
CHECK_REQUEST(cx);
script = JS_CompileUCScriptForPrincipals(cx, obj, principals, chars, length,
filename, lineno);
if (!script)
return JS_FALSE;
ok = js_Execute(cx, obj, script, NULL, NULL, JS_FALSE, rval);
#if JS_HAS_EXCEPTIONS
if (!ok)
js_ReportUncaughtException(cx);
#endif
JS_DestroyScript(cx, script);
return ok;
}
JS_PUBLIC_API(JSBool)
JS_CallFunction(JSContext *cx, JSObject *obj, JSFunction *fun, uintN argc,
jsval *argv, jsval *rval)
{
CHECK_REQUEST(cx);
if (!js_CallFunctionValue(cx, obj, OBJECT_TO_JSVAL(fun->object),
argc, argv, rval)) {
#if JS_HAS_EXCEPTIONS
js_ReportUncaughtException(cx);
#endif
return JS_FALSE;
}
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_CallFunctionName(JSContext *cx, JSObject *obj, const char *name, uintN argc,
jsval *argv, jsval *rval)
{
jsval fval;
CHECK_REQUEST(cx);
if (!JS_GetProperty(cx, obj, name, &fval))
return JS_FALSE;
if (!js_CallFunctionValue(cx, obj, fval, argc, argv, rval)) {
#if JS_HAS_EXCEPTIONS
js_ReportUncaughtException(cx);
#endif
return JS_FALSE;
}
return JS_TRUE;
}
JS_PUBLIC_API(JSBool)
JS_CallFunctionValue(JSContext *cx, JSObject *obj, jsval fval, uintN argc,
jsval *argv, jsval *rval)
{
CHECK_REQUEST(cx);
if (!js_CallFunctionValue(cx, obj, fval, argc, argv, rval)) {
#if JS_HAS_EXCEPTIONS
js_ReportUncaughtException(cx);
#endif
return JS_FALSE;
}
return JS_TRUE;
}
JS_PUBLIC_API(JSBranchCallback)
JS_SetBranchCallback(JSContext *cx, JSBranchCallback cb)
{
JSBranchCallback oldcb;
CHECK_REQUEST(cx);
oldcb = cx->branchCallback;
cx->branchCallback = cb;
return oldcb;
}
JS_PUBLIC_API(JSBool)
JS_IsRunning(JSContext *cx)
{
return cx->fp != NULL;
}
JS_PUBLIC_API(JSBool)
JS_IsConstructing(JSContext *cx)
{
CHECK_REQUEST(cx);
return cx->fp && cx->fp->constructing;
}
/************************************************************************/
JS_PUBLIC_API(JSString *)
JS_NewString(JSContext *cx, char *bytes, size_t length)
{
jschar *chars;
JSString *str;
CHECK_REQUEST(cx);
/* Make a Unicode vector from the 8-bit char codes in bytes. */
chars = js_InflateString(cx, bytes, length);
if (!chars)
return NULL;
/* Free chars (but not bytes, which caller frees on error) if we fail. */
str = js_NewString(cx, chars, length, 0);
if (!str) {
JS_free(cx, chars);
return NULL;
}
/* Hand off bytes to the deflated string cache, if possible. */
if (!js_SetStringBytes(str, bytes, length))
JS_free(cx, bytes);
return str;
}
JS_PUBLIC_API(JSString *)
JS_NewStringCopyN(JSContext *cx, const char *s, size_t n)
{
jschar *js;
JSString *str;
CHECK_REQUEST(cx);
js = js_InflateString(cx, s, n);
if (!js)
return NULL;
str = js_NewString(cx, js, n, 0);
if (!str)
JS_free(cx, js);
return str;
}
JS_PUBLIC_API(JSString *)
JS_NewStringCopyZ(JSContext *cx, const char *s)
{
size_t n;
jschar *js;
JSString *str;
CHECK_REQUEST(cx);
if (!s)
return cx->runtime->emptyString;
n = strlen(s);
js = js_InflateString(cx, s, n);
if (!js)
return NULL;
str = js_NewString(cx, js, n, 0);
if (!str)
JS_free(cx, js);
return str;
}
JS_PUBLIC_API(JSString *)
JS_InternString(JSContext *cx, const char *s)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_Atomize(cx, s, strlen(s), ATOM_PINNED);
if (!atom)
return NULL;
return ATOM_TO_STRING(atom);
}
JS_PUBLIC_API(JSString *)
JS_NewUCString(JSContext *cx, jschar *chars, size_t length)
{
CHECK_REQUEST(cx);
return js_NewString(cx, chars, length, 0);
}
JS_PUBLIC_API(JSString *)
JS_NewUCStringCopyN(JSContext *cx, const jschar *s, size_t n)
{
CHECK_REQUEST(cx);
return js_NewStringCopyN(cx, s, n, 0);
}
JS_PUBLIC_API(JSString *)
JS_NewUCStringCopyZ(JSContext *cx, const jschar *s)
{
CHECK_REQUEST(cx);
if (!s)
return cx->runtime->emptyString;
return js_NewStringCopyZ(cx, s, 0);
}
JS_PUBLIC_API(JSString *)
JS_InternUCStringN(JSContext *cx, const jschar *s, size_t length)
{
JSAtom *atom;
CHECK_REQUEST(cx);
atom = js_AtomizeChars(cx, s, length, ATOM_PINNED);
if (!atom)
return NULL;
return ATOM_TO_STRING(atom);
}
JS_PUBLIC_API(JSString *)
JS_InternUCString(JSContext *cx, const jschar *s)
{
return JS_InternUCStringN(cx, s, js_strlen(s));
}
JS_PUBLIC_API(char *)
JS_GetStringBytes(JSString *str)
{
char *bytes = js_GetStringBytes(str);
return bytes ? bytes : "";
}
JS_PUBLIC_API(jschar *)
JS_GetStringChars(JSString *str)
{
return str->chars;
}
JS_PUBLIC_API(size_t)
JS_GetStringLength(JSString *str)
{
return str->length;
}
JS_PUBLIC_API(intN)
JS_CompareStrings(JSString *str1, JSString *str2)
{
return js_CompareStrings(str1, str2);
}
/************************************************************************/
JS_PUBLIC_API(void)
JS_ReportError(JSContext *cx, const char *format, ...)
{
va_list ap;
CHECK_REQUEST(cx);
va_start(ap, format);
js_ReportErrorVA(cx, JSREPORT_ERROR, format, ap);
va_end(ap);
}
JS_PUBLIC_API(void)
JS_ReportErrorNumber(JSContext *cx, JSErrorCallback errorCallback,
void *userRef, const uintN errorNumber, ...)
{
va_list ap;
CHECK_REQUEST(cx);
va_start(ap, errorNumber);
js_ReportErrorNumberVA(cx, JSREPORT_ERROR, errorCallback, userRef,
errorNumber, JS_TRUE, ap);
va_end(ap);
}
JS_PUBLIC_API(void)
JS_ReportErrorNumberUC(JSContext *cx, JSErrorCallback errorCallback,
void *userRef, const uintN errorNumber, ...)
{
va_list ap;
CHECK_REQUEST(cx);
va_start(ap, errorNumber);
js_ReportErrorNumberVA(cx, JSREPORT_ERROR, errorCallback, userRef,
errorNumber, JS_FALSE, ap);
va_end(ap);
}
JS_PUBLIC_API(void)
JS_ReportWarning(JSContext *cx, const char *format, ...)
{
va_list ap;
va_start(ap, format);
js_ReportErrorVA(cx, JSREPORT_WARNING, format, ap);
va_end(ap);
}
JS_PUBLIC_API(void)
JS_ReportOutOfMemory(JSContext *cx)
{
JS_ReportError(cx, "out of memory");
}
JS_PUBLIC_API(JSErrorReporter)
JS_SetErrorReporter(JSContext *cx, JSErrorReporter er)
{
JSErrorReporter older;
CHECK_REQUEST(cx);
older = cx->errorReporter;
cx->errorReporter = er;
return older;
}
/************************************************************************/
/*
* Regular Expressions.
*/
JS_PUBLIC_API(JSObject *)
JS_NewRegExpObject(JSContext *cx, char *bytes, size_t length, uintN flags)
{
#if JS_HAS_REGEXPS
jschar *chars;
JSObject *obj;
CHECK_REQUEST(cx);
chars = js_InflateString(cx, bytes, length);
if (!chars)
return NULL;
obj = js_NewRegExpObject(cx, chars, length, flags);
JS_free(cx, chars);
return obj;
#else
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_NO_REG_EXPS);
return NULL;
#endif
}
JS_PUBLIC_API(JSObject *)
JS_NewUCRegExpObject(JSContext *cx, jschar *chars, size_t length, uintN flags)
{
CHECK_REQUEST(cx);
#if JS_HAS_REGEXPS
return js_NewRegExpObject(cx, chars, length, flags);
#else
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_NO_REG_EXPS);
return NULL;
#endif
}
JS_PUBLIC_API(void)
JS_SetRegExpInput(JSContext *cx, JSString *input, JSBool multiline)
{
JSRegExpStatics *res;
CHECK_REQUEST(cx);
/* No locking required, cx is thread-private and input must be live. */
res = &cx->regExpStatics;
res->input = input;
res->multiline = multiline;
}
JS_PUBLIC_API(void)
JS_ClearRegExpStatics(JSContext *cx)
{
JSRegExpStatics *res;
CHECK_REQUEST(cx);
/* No locking required, cx is thread-private and input must be live. */
res = &cx->regExpStatics;
res->input = NULL;
res->multiline = JS_FALSE;
res->parenCount = 0;
res->lastMatch = res->lastParen = js_EmptySubString;
res->leftContext = res->rightContext = js_EmptySubString;
}
JS_PUBLIC_API(void)
JS_ClearRegExpRoots(JSContext *cx)
{
JSRegExpStatics *res;
CHECK_REQUEST(cx);
/* No locking required, cx is thread-private and input must be live. */
res = &cx->regExpStatics;
res->input = NULL;
}
/* TODO: compile, execute, get/set other statics... */
/************************************************************************/
JS_PUBLIC_API(JSBool)
JS_IsExceptionPending(JSContext *cx)
{
CHECK_REQUEST(cx);
#if JS_HAS_EXCEPTIONS
return (JSBool) cx->throwing;
#else
return JS_FALSE;
#endif
}
JS_PUBLIC_API(JSBool)
JS_GetPendingException(JSContext *cx, jsval *vp)
{
CHECK_REQUEST(cx);
#if JS_HAS_EXCEPTIONS
if (!cx->throwing)
return JS_FALSE;
*vp = cx->exception;
return JS_TRUE;
#else
return JS_FALSE;
#endif
}
JS_PUBLIC_API(void)
JS_SetPendingException(JSContext *cx, jsval v)
{
CHECK_REQUEST(cx);
#if JS_HAS_EXCEPTIONS
cx->throwing = JS_TRUE;
cx->exception = v;
#endif
}
JS_PUBLIC_API(void)
JS_ClearPendingException(JSContext *cx)
{
CHECK_REQUEST(cx);
#if JS_HAS_EXCEPTIONS
cx->throwing = JS_FALSE;
#endif
}
#if JS_HAS_EXCEPTIONS
struct JSExceptionState
{
JSBool throwing;
jsval exception;
};
#endif
JS_PUBLIC_API(JSExceptionState *)
JS_SaveExceptionState(JSContext *cx)
{
#if JS_HAS_EXCEPTIONS
JSExceptionState *state;
CHECK_REQUEST(cx);
state = (JSExceptionState*) JS_malloc(cx, sizeof(JSExceptionState));
if (state) {
state->throwing = JS_GetPendingException(cx, &state->exception);
if (state->throwing && JSVAL_IS_GCTHING(state->exception))
JS_AddRoot(cx, &state->exception);
}
return state;
#else
return NULL;
#endif
}
JS_PUBLIC_API(void)
JS_RestoreExceptionState(JSContext *cx, JSExceptionState *state)
{
#if JS_HAS_EXCEPTIONS
CHECK_REQUEST(cx);
if (state) {
if (state->throwing)
JS_SetPendingException(cx, state->exception);
else
JS_ClearPendingException(cx);
JS_DropExceptionState(cx, state);
}
#endif
}
JS_PUBLIC_API(void)
JS_DropExceptionState(JSContext *cx, JSExceptionState *state)
{
#if JS_HAS_EXCEPTIONS
CHECK_REQUEST(cx);
if (state) {
if (state->throwing && JSVAL_IS_GCTHING(state->exception))
JS_RemoveRoot(cx, &state->exception);
JS_free(cx, state);
}
#endif
}
#ifdef JS_THREADSAFE
JS_PUBLIC_API(intN)
JS_GetContextThread(JSContext *cx)
{
return cx->thread;
}
JS_PUBLIC_API(intN)
JS_SetContextThread(JSContext *cx)
{
intN old = cx->thread;
cx->thread = js_CurrentThreadId();
return old;
}
JS_PUBLIC_API(intN)
JS_ClearContextThread(JSContext *cx)
{
intN old = cx->thread;
cx->thread = 0;
return old;
}
#endif
/************************************************************************/
JS_FRIEND_API(JSBool)
JS_IsAssigning(JSContext *cx)
{
JSStackFrame *fp;
jsbytecode *pc;
if (!(fp = cx->fp) || !(pc = fp->pc))
return JS_FALSE;
return (js_CodeSpec[*pc].format & JOF_SET) != 0;
}
/************************************************************************/
#ifdef XP_PC
#include <windows.h>
#if defined(XP_OS2_HACK)
/*DSR031297 - the OS/2 equiv is dll_InitTerm, but I don't see the need for it*/
#else
/*
* Initialization routine for the JS DLL...
*/
/*
* Global Instance handle...
* In Win32 this is the module handle of the DLL.
*
* In Win16 this is the instance handle of the application
* which loaded the DLL.
*/
#ifdef _WIN32
BOOL WINAPI DllMain (HINSTANCE hDLL, DWORD dwReason, LPVOID lpReserved)
{
return TRUE;
}
#else /* !_WIN32 */
int CALLBACK LibMain( HINSTANCE hInst, WORD wDataSeg,
WORD cbHeapSize, LPSTR lpszCmdLine )
{
return TRUE;
}
BOOL CALLBACK __loadds WEP(BOOL fSystemExit)
{
return TRUE;
}
#endif /* !_WIN32 */
#endif /* XP_OS2 */
#endif /* XP_PC */
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