mirror of https://github.com/axmolengine/axmol.git
1499 lines
48 KiB
C++
1499 lines
48 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef jsfriendapi_h___
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#define jsfriendapi_h___
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#include "mozilla/GuardObjects.h"
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#include "jsclass.h"
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#include "jscpucfg.h"
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#include "jspubtd.h"
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#include "jsprvtd.h"
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/*
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* This macro checks if the stack pointer has exceeded a given limit. If
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* |tolerance| is non-zero, it returns true only if the stack pointer has
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* exceeded the limit by more than |tolerance| bytes.
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*/
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#if JS_STACK_GROWTH_DIRECTION > 0
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# define JS_CHECK_STACK_SIZE_WITH_TOLERANCE(limit, sp, tolerance) \
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((uintptr_t)(sp) < (limit)+(tolerance))
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#else
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# define JS_CHECK_STACK_SIZE_WITH_TOLERANCE(limit, sp, tolerance) \
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((uintptr_t)(sp) > (limit)-(tolerance))
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#endif
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#define JS_CHECK_STACK_SIZE(limit, lval) JS_CHECK_STACK_SIZE_WITH_TOLERANCE(limit, lval, 0)
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extern JS_FRIEND_API(void)
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JS_SetGrayGCRootsTracer(JSRuntime *rt, JSTraceDataOp traceOp, void *data);
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extern JS_FRIEND_API(JSString *)
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JS_GetAnonymousString(JSRuntime *rt);
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extern JS_FRIEND_API(JSObject *)
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JS_FindCompilationScope(JSContext *cx, JSObject *obj);
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extern JS_FRIEND_API(JSFunction *)
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JS_GetObjectFunction(JSObject *obj);
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extern JS_FRIEND_API(JSBool)
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JS_SplicePrototype(JSContext *cx, JSObject *obj, JSObject *proto);
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extern JS_FRIEND_API(JSObject *)
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JS_NewObjectWithUniqueType(JSContext *cx, JSClass *clasp, JSObject *proto, JSObject *parent);
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extern JS_FRIEND_API(uint32_t)
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JS_ObjectCountDynamicSlots(JSHandleObject obj);
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extern JS_FRIEND_API(size_t)
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JS_SetProtoCalled(JSContext *cx);
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extern JS_FRIEND_API(size_t)
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JS_GetCustomIteratorCount(JSContext *cx);
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extern JS_FRIEND_API(JSBool)
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JS_NondeterministicGetWeakMapKeys(JSContext *cx, JSObject *obj, JSObject **ret);
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/*
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* Determine whether the given object is backed by a DeadObjectProxy.
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*
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* Such objects hold no other objects (they have no outgoing reference edges)
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* and will throw if you touch them (e.g. by reading/writing a property).
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*/
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extern JS_FRIEND_API(JSBool)
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JS_IsDeadWrapper(JSObject *obj);
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/*
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* Used by the cycle collector to trace through the shape and all
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* shapes it reaches, marking all non-shape children found in the
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* process. Uses bounded stack space.
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*/
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extern JS_FRIEND_API(void)
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JS_TraceShapeCycleCollectorChildren(JSTracer *trc, void *shape);
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enum {
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JS_TELEMETRY_GC_REASON,
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JS_TELEMETRY_GC_IS_COMPARTMENTAL,
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JS_TELEMETRY_GC_MS,
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JS_TELEMETRY_GC_MAX_PAUSE_MS,
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JS_TELEMETRY_GC_MARK_MS,
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JS_TELEMETRY_GC_SWEEP_MS,
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JS_TELEMETRY_GC_MARK_ROOTS_MS,
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JS_TELEMETRY_GC_MARK_GRAY_MS,
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JS_TELEMETRY_GC_SLICE_MS,
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JS_TELEMETRY_GC_MMU_50,
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JS_TELEMETRY_GC_RESET,
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JS_TELEMETRY_GC_INCREMENTAL_DISABLED,
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JS_TELEMETRY_GC_NON_INCREMENTAL,
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JS_TELEMETRY_GC_SCC_SWEEP_TOTAL_MS,
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JS_TELEMETRY_GC_SCC_SWEEP_MAX_PAUSE_MS
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};
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typedef void
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(* JSAccumulateTelemetryDataCallback)(int id, uint32_t sample);
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extern JS_FRIEND_API(void)
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JS_SetAccumulateTelemetryCallback(JSRuntime *rt, JSAccumulateTelemetryDataCallback callback);
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extern JS_FRIEND_API(JSPrincipals *)
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JS_GetCompartmentPrincipals(JSCompartment *compartment);
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extern JS_FRIEND_API(void)
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JS_SetCompartmentPrincipals(JSCompartment *compartment, JSPrincipals *principals);
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/* Safe to call with input obj == NULL. Returns non-NULL iff obj != NULL. */
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extern JS_FRIEND_API(JSObject *)
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JS_ObjectToInnerObject(JSContext *cx, JSObject *obj);
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/* Requires obj != NULL. */
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extern JS_FRIEND_API(JSObject *)
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JS_ObjectToOuterObject(JSContext *cx, JSObject *obj);
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extern JS_FRIEND_API(JSObject *)
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JS_CloneObject(JSContext *cx, JSObject *obj, JSObject *proto, JSObject *parent);
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extern JS_FRIEND_API(JSString *)
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JS_BasicObjectToString(JSContext *cx, JSHandleObject obj);
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extern JS_FRIEND_API(JSBool)
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js_GetterOnlyPropertyStub(JSContext *cx, JSHandleObject obj, JSHandleId id, JSBool strict, JSMutableHandleValue vp);
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JS_FRIEND_API(void)
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js_ReportOverRecursed(JSContext *maybecx);
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#ifdef DEBUG
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/*
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* Routines to print out values during debugging. These are FRIEND_API to help
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* the debugger find them and to support temporarily hacking js_Dump* calls
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* into other code.
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*/
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extern JS_FRIEND_API(void)
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js_DumpString(JSString *str);
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extern JS_FRIEND_API(void)
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js_DumpAtom(JSAtom *atom);
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extern JS_FRIEND_API(void)
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js_DumpObject(JSObject *obj);
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extern JS_FRIEND_API(void)
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js_DumpChars(const jschar *s, size_t n);
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#endif
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extern JS_FRIEND_API(bool)
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JS_CopyPropertiesFrom(JSContext *cx, JSObject *target, JSObject *obj);
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extern JS_FRIEND_API(JSBool)
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JS_WrapPropertyDescriptor(JSContext *cx, js::PropertyDescriptor *desc);
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extern JS_FRIEND_API(JSBool)
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JS_WrapAutoIdVector(JSContext *cx, JS::AutoIdVector &props);
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extern JS_FRIEND_API(JSBool)
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JS_EnumerateState(JSContext *cx, JSHandleObject obj, JSIterateOp enum_op,
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js::MutableHandleValue statep, js::MutableHandleId idp);
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struct JSFunctionSpecWithHelp {
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const char *name;
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JSNative call;
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uint16_t nargs;
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uint16_t flags;
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const char *usage;
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const char *help;
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};
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#define JS_FN_HELP(name,call,nargs,flags,usage,help) \
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{name, call, nargs, (flags) | JSPROP_ENUMERATE | JSFUN_STUB_GSOPS, usage, help}
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#define JS_FS_HELP_END \
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{NULL, NULL, 0, 0, NULL, NULL}
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extern JS_FRIEND_API(bool)
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JS_DefineFunctionsWithHelp(JSContext *cx, JSObject *obj, const JSFunctionSpecWithHelp *fs);
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typedef bool (* JS_SourceHook)(JSContext *cx, JSScript *script, jschar **src, uint32_t *length);
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extern JS_FRIEND_API(void)
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JS_SetSourceHook(JSRuntime *rt, JS_SourceHook hook);
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namespace js {
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extern mozilla::ThreadLocal<PerThreadData *> TlsPerThreadData;
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inline JSRuntime *
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GetRuntime(const JSContext *cx)
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{
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return ContextFriendFields::get(cx)->runtime;
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}
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inline JSCompartment *
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GetContextCompartment(const JSContext *cx)
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{
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return ContextFriendFields::get(cx)->compartment;
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}
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inline JS::Zone *
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GetContextZone(const JSContext *cx)
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{
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return ContextFriendFields::get(cx)->zone_;
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}
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extern JS_FRIEND_API(JS::Zone *)
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GetCompartmentZone(JSCompartment *comp);
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typedef bool
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(* PreserveWrapperCallback)(JSContext *cx, JSObject *obj);
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/*
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* Dump the complete object graph of heap-allocated things.
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* fp is the file for the dump output.
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*/
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extern JS_FRIEND_API(void)
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DumpHeapComplete(JSRuntime *rt, FILE *fp);
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class JS_FRIEND_API(AutoSwitchCompartment) {
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private:
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JSContext *cx;
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JSCompartment *oldCompartment;
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public:
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AutoSwitchCompartment(JSContext *cx, JSCompartment *newCompartment
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
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AutoSwitchCompartment(JSContext *cx, JSHandleObject target
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
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~AutoSwitchCompartment();
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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#ifdef OLD_GETTER_SETTER_METHODS
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JS_FRIEND_API(JSBool) obj_defineGetter(JSContext *cx, unsigned argc, js::Value *vp);
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JS_FRIEND_API(JSBool) obj_defineSetter(JSContext *cx, unsigned argc, js::Value *vp);
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#endif
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extern JS_FRIEND_API(bool)
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IsSystemCompartment(JSCompartment *comp);
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extern JS_FRIEND_API(bool)
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IsSystemZone(JS::Zone *zone);
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extern JS_FRIEND_API(bool)
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IsAtomsCompartment(JSCompartment *comp);
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/*
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* Check whether it is OK to assign an undeclared variable with the name
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* |propname| at the current location in script. It is not an error if there is
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* no current script location, or if that location is not an assignment to an
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* undeclared variable. Reports an error if one needs to be reported (and,
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* particularly, always reports when it returns false).
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*/
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extern JS_FRIEND_API(bool)
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ReportIfUndeclaredVarAssignment(JSContext *cx, HandleString propname);
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struct WeakMapTracer;
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/*
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* Weak map tracer callback, called once for every binding of every
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* weak map that was live at the time of the last garbage collection.
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*
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* m will be NULL if the weak map is not contained in a JS Object.
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*/
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typedef void
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(* WeakMapTraceCallback)(WeakMapTracer *trc, JSObject *m,
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void *k, JSGCTraceKind kkind,
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void *v, JSGCTraceKind vkind);
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struct WeakMapTracer {
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JSRuntime *runtime;
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WeakMapTraceCallback callback;
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WeakMapTracer(JSRuntime *rt, WeakMapTraceCallback cb)
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: runtime(rt), callback(cb) {}
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};
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extern JS_FRIEND_API(void)
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TraceWeakMaps(WeakMapTracer *trc);
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extern JS_FRIEND_API(bool)
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AreGCGrayBitsValid(JSRuntime *rt);
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typedef void
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(*GCThingCallback)(void *closure, void *gcthing);
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extern JS_FRIEND_API(void)
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VisitGrayWrapperTargets(JS::Zone *zone, GCThingCallback callback, void *closure);
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extern JS_FRIEND_API(JSObject *)
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GetWeakmapKeyDelegate(JSObject *key);
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JS_FRIEND_API(JSGCTraceKind)
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GCThingTraceKind(void *thing);
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/*
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* Invoke cellCallback on every gray JS_OBJECT in the given zone.
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*/
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extern JS_FRIEND_API(void)
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IterateGrayObjects(JS::Zone *zone, GCThingCallback cellCallback, void *data);
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#ifdef JS_HAS_CTYPES
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extern JS_FRIEND_API(size_t)
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SizeOfDataIfCDataObject(JSMallocSizeOfFun mallocSizeOf, JSObject *obj);
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#endif
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extern JS_FRIEND_API(JSCompartment *)
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GetAnyCompartmentInZone(JS::Zone *zone);
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/*
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* Shadow declarations of JS internal structures, for access by inline access
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* functions below. Do not use these structures in any other way. When adding
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* new fields for access by inline methods, make sure to add static asserts to
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* the original header file to ensure that offsets are consistent.
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*/
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namespace shadow {
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struct TypeObject {
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Class *clasp;
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JSObject *proto;
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};
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struct BaseShape {
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js::Class *clasp;
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JSObject *parent;
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JSCompartment *compartment;
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};
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class Shape {
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public:
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shadow::BaseShape *base;
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jsid _1;
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uint32_t slotInfo;
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static const uint32_t FIXED_SLOTS_SHIFT = 27;
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};
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struct Object {
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shadow::Shape *shape;
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shadow::TypeObject *type;
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js::Value *slots;
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js::Value *_1;
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size_t numFixedSlots() const { return shape->slotInfo >> Shape::FIXED_SLOTS_SHIFT; }
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Value *fixedSlots() const {
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return (Value *)(uintptr_t(this) + sizeof(shadow::Object));
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}
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js::Value &slotRef(size_t slot) const {
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size_t nfixed = numFixedSlots();
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if (slot < nfixed)
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return fixedSlots()[slot];
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return slots[slot - nfixed];
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}
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};
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struct Function {
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Object base;
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uint16_t nargs;
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uint16_t flags;
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/* Used only for natives */
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Native native;
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const JSJitInfo *jitinfo;
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void *_1;
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};
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struct Atom {
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size_t _;
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const jschar *chars;
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};
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} /* namespace shadow */
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extern JS_FRIEND_DATA(js::Class) CallClass;
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extern JS_FRIEND_DATA(js::Class) DeclEnvClass;
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extern JS_FRIEND_DATA(js::Class) FunctionClass;
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extern JS_FRIEND_DATA(js::Class) FunctionProxyClass;
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extern JS_FRIEND_DATA(js::Class) OuterWindowProxyClass;
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extern JS_FRIEND_DATA(js::Class) ObjectProxyClass;
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extern JS_FRIEND_DATA(js::Class) ObjectClass;
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inline js::Class *
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GetObjectClass(JSObject *obj)
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{
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return reinterpret_cast<const shadow::Object*>(obj)->type->clasp;
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}
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inline JSClass *
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GetObjectJSClass(JSObject *obj)
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{
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return js::Jsvalify(GetObjectClass(obj));
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}
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inline bool
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IsInnerObject(JSObject *obj) {
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return !!GetObjectClass(obj)->ext.outerObject;
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}
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inline bool
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IsOuterObject(JSObject *obj) {
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return !!GetObjectClass(obj)->ext.innerObject;
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}
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JS_FRIEND_API(bool)
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IsScopeObject(JSObject *obj);
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inline JSObject *
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GetObjectParent(JSObject *obj)
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{
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JS_ASSERT(!IsScopeObject(obj));
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return reinterpret_cast<shadow::Object*>(obj)->shape->base->parent;
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}
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static JS_ALWAYS_INLINE JSCompartment *
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GetObjectCompartment(JSObject *obj)
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{
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return reinterpret_cast<shadow::Object*>(obj)->shape->base->compartment;
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}
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JS_FRIEND_API(JSObject *)
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GetObjectParentMaybeScope(JSObject *obj);
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JS_FRIEND_API(JSObject *)
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GetGlobalForObjectCrossCompartment(JSObject *obj);
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JS_FRIEND_API(void)
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NotifyAnimationActivity(JSObject *obj);
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JS_FRIEND_API(bool)
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IsOriginalScriptFunction(JSFunction *fun);
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/*
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* Return the outermost enclosing function (script) of the scripted caller.
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* This function returns NULL in several cases:
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* - no script is running on the context
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* - the caller is in global or eval code
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* In particular, this function will "stop" its outermost search at eval() and
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* thus it will really return the outermost enclosing function *since the
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* innermost eval*.
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*/
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JS_FRIEND_API(JSScript *)
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GetOutermostEnclosingFunctionOfScriptedCaller(JSContext *cx);
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JS_FRIEND_API(JSFunction *)
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DefineFunctionWithReserved(JSContext *cx, JSObject *obj, const char *name, JSNative call,
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unsigned nargs, unsigned attrs);
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JS_FRIEND_API(JSFunction *)
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NewFunctionWithReserved(JSContext *cx, JSNative call, unsigned nargs, unsigned flags,
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JSObject *parent, const char *name);
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JS_FRIEND_API(JSFunction *)
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NewFunctionByIdWithReserved(JSContext *cx, JSNative native, unsigned nargs, unsigned flags,
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JSObject *parent, jsid id);
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JS_FRIEND_API(JSObject *)
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InitClassWithReserved(JSContext *cx, JSObject *obj, JSObject *parent_proto,
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JSClass *clasp, JSNative constructor, unsigned nargs,
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const JSPropertySpec *ps, const JSFunctionSpec *fs,
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const JSPropertySpec *static_ps, const JSFunctionSpec *static_fs);
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JS_FRIEND_API(const Value &)
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GetFunctionNativeReserved(JSObject *fun, size_t which);
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JS_FRIEND_API(void)
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SetFunctionNativeReserved(JSObject *fun, size_t which, const Value &val);
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inline bool
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GetObjectProto(JSContext *cx, JS::Handle<JSObject*> obj, JS::MutableHandle<JSObject*> proto)
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{
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js::Class *clasp = GetObjectClass(obj);
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if (clasp == &js::ObjectProxyClass ||
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clasp == &js::OuterWindowProxyClass ||
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clasp == &js::FunctionProxyClass)
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{
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return JS_GetPrototype(cx, obj, proto.address());
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}
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proto.set(reinterpret_cast<const shadow::Object*>(obj.get())->type->proto);
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return true;
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}
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inline void *
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GetObjectPrivate(JSObject *obj)
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{
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const shadow::Object *nobj = reinterpret_cast<const shadow::Object*>(obj);
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void **addr = reinterpret_cast<void**>(&nobj->fixedSlots()[nobj->numFixedSlots()]);
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return *addr;
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}
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/*
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* Get a slot that is both reserved for object's clasp *and* is fixed (fits
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* within the maximum capacity for the object's fixed slots).
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*/
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inline const Value &
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GetReservedSlot(JSObject *obj, size_t slot)
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{
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JS_ASSERT(slot < JSCLASS_RESERVED_SLOTS(GetObjectClass(obj)));
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|
return reinterpret_cast<const shadow::Object *>(obj)->slotRef(slot);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
SetReservedSlotWithBarrier(JSObject *obj, size_t slot, const Value &value);
|
|
|
|
inline void
|
|
SetReservedSlot(JSObject *obj, size_t slot, const Value &value)
|
|
{
|
|
JS_ASSERT(slot < JSCLASS_RESERVED_SLOTS(GetObjectClass(obj)));
|
|
shadow::Object *sobj = reinterpret_cast<shadow::Object *>(obj);
|
|
if (sobj->slotRef(slot).isMarkable()
|
|
#ifdef JSGC_GENERATIONAL
|
|
|| value.isMarkable()
|
|
#endif
|
|
)
|
|
{
|
|
SetReservedSlotWithBarrier(obj, slot, value);
|
|
} else {
|
|
sobj->slotRef(slot) = value;
|
|
}
|
|
}
|
|
|
|
JS_FRIEND_API(uint32_t)
|
|
GetObjectSlotSpan(JSObject *obj);
|
|
|
|
inline const Value &
|
|
GetObjectSlot(JSObject *obj, size_t slot)
|
|
{
|
|
JS_ASSERT(slot < GetObjectSlotSpan(obj));
|
|
return reinterpret_cast<const shadow::Object *>(obj)->slotRef(slot);
|
|
}
|
|
|
|
inline const jschar *
|
|
GetAtomChars(JSAtom *atom)
|
|
{
|
|
return reinterpret_cast<shadow::Atom *>(atom)->chars;
|
|
}
|
|
|
|
inline JSLinearString *
|
|
AtomToLinearString(JSAtom *atom)
|
|
{
|
|
return reinterpret_cast<JSLinearString *>(atom);
|
|
}
|
|
|
|
static inline js::PropertyOp
|
|
CastAsJSPropertyOp(JSObject *object)
|
|
{
|
|
return JS_DATA_TO_FUNC_PTR(js::PropertyOp, object);
|
|
}
|
|
|
|
static inline js::StrictPropertyOp
|
|
CastAsJSStrictPropertyOp(JSObject *object)
|
|
{
|
|
return JS_DATA_TO_FUNC_PTR(js::StrictPropertyOp, object);
|
|
}
|
|
|
|
JS_FRIEND_API(bool)
|
|
GetPropertyNames(JSContext *cx, JSObject *obj, unsigned flags, js::AutoIdVector *props);
|
|
|
|
JS_FRIEND_API(bool)
|
|
AppendUnique(JSContext *cx, AutoIdVector &base, AutoIdVector &others);
|
|
|
|
JS_FRIEND_API(bool)
|
|
GetGeneric(JSContext *cx, JSObject *obj, JSObject *receiver, jsid id, Value *vp);
|
|
|
|
JS_FRIEND_API(bool)
|
|
StringIsArrayIndex(JSLinearString *str, uint32_t *indexp);
|
|
|
|
JS_FRIEND_API(void)
|
|
SetPreserveWrapperCallback(JSRuntime *rt, PreserveWrapperCallback callback);
|
|
|
|
JS_FRIEND_API(bool)
|
|
IsObjectInContextCompartment(JSObject *obj, const JSContext *cx);
|
|
|
|
/*
|
|
* NB: these flag bits are encoded into the bytecode stream in the immediate
|
|
* operand of JSOP_ITER, so don't change them without advancing vm/Xdr.h's
|
|
* XDR_BYTECODE_VERSION.
|
|
*/
|
|
#define JSITER_ENUMERATE 0x1 /* for-in compatible hidden default iterator */
|
|
#define JSITER_FOREACH 0x2 /* return [key, value] pair rather than key */
|
|
#define JSITER_KEYVALUE 0x4 /* destructuring for-in wants [key, value] */
|
|
#define JSITER_OWNONLY 0x8 /* iterate over obj's own properties only */
|
|
#define JSITER_HIDDEN 0x10 /* also enumerate non-enumerable properties */
|
|
#define JSITER_FOR_OF 0x20 /* harmony for-of loop */
|
|
|
|
inline uintptr_t
|
|
GetNativeStackLimit(const JSRuntime *rt)
|
|
{
|
|
return PerThreadDataFriendFields::getMainThread(rt)->nativeStackLimit;
|
|
}
|
|
|
|
/*
|
|
* These macros report a stack overflow and run |onerror| if we are close to
|
|
* using up the C stack. The JS_CHECK_CHROME_RECURSION variant gives us a little
|
|
* extra space so that we can ensure that crucial code is able to run.
|
|
*/
|
|
|
|
#define JS_CHECK_RECURSION(cx, onerror) \
|
|
JS_BEGIN_MACRO \
|
|
int stackDummy_; \
|
|
if (!JS_CHECK_STACK_SIZE(js::GetNativeStackLimit(js::GetRuntime(cx)), &stackDummy_)) { \
|
|
js_ReportOverRecursed(cx); \
|
|
onerror; \
|
|
} \
|
|
JS_END_MACRO
|
|
|
|
#define JS_CHECK_RECURSION_WITH_EXTRA_DONT_REPORT(cx, extra, onerror) \
|
|
JS_BEGIN_MACRO \
|
|
uint8_t stackDummy_; \
|
|
if (!JS_CHECK_STACK_SIZE(js::GetNativeStackLimit(js::GetRuntime(cx)), \
|
|
&stackDummy_ - (extra))) \
|
|
{ \
|
|
onerror; \
|
|
} \
|
|
JS_END_MACRO
|
|
|
|
#define JS_CHECK_CHROME_RECURSION(cx, onerror) \
|
|
JS_BEGIN_MACRO \
|
|
int stackDummy_; \
|
|
if (!JS_CHECK_STACK_SIZE_WITH_TOLERANCE(js::GetNativeStackLimit(js::GetRuntime(cx)), \
|
|
&stackDummy_, \
|
|
1024 * sizeof(size_t))) \
|
|
{ \
|
|
js_ReportOverRecursed(cx); \
|
|
onerror; \
|
|
} \
|
|
JS_END_MACRO
|
|
|
|
JS_FRIEND_API(void)
|
|
StartPCCountProfiling(JSContext *cx);
|
|
|
|
JS_FRIEND_API(void)
|
|
StopPCCountProfiling(JSContext *cx);
|
|
|
|
JS_FRIEND_API(void)
|
|
PurgePCCounts(JSContext *cx);
|
|
|
|
JS_FRIEND_API(size_t)
|
|
GetPCCountScriptCount(JSContext *cx);
|
|
|
|
JS_FRIEND_API(JSString *)
|
|
GetPCCountScriptSummary(JSContext *cx, size_t script);
|
|
|
|
JS_FRIEND_API(JSString *)
|
|
GetPCCountScriptContents(JSContext *cx, size_t script);
|
|
|
|
/*
|
|
* A call stack can be specified to the JS engine such that all JS entry/exits
|
|
* to functions push/pop an entry to/from the specified stack.
|
|
*
|
|
* For more detailed information, see vm/SPSProfiler.h
|
|
*/
|
|
class ProfileEntry
|
|
{
|
|
/*
|
|
* All fields are marked volatile to prevent the compiler from re-ordering
|
|
* instructions. Namely this sequence:
|
|
*
|
|
* entry[size] = ...;
|
|
* size++;
|
|
*
|
|
* If the size modification were somehow reordered before the stores, then
|
|
* if a sample were taken it would be examining bogus information.
|
|
*
|
|
* A ProfileEntry represents both a C++ profile entry and a JS one. Both use
|
|
* the string as a description, but JS uses the sp as NULL to indicate that
|
|
* it is a JS entry. The script_ is then only ever examined for a JS entry,
|
|
* and the idx is used by both, but with different meanings.
|
|
*/
|
|
const char * volatile string; // Descriptive string of this entry
|
|
void * volatile sp; // Relevant stack pointer for the entry
|
|
JSScript * volatile script_; // if js(), non-null script which is running
|
|
int32_t volatile idx; // if js(), idx of pc, otherwise line number
|
|
|
|
public:
|
|
/*
|
|
* All of these methods are marked with the 'volatile' keyword because SPS's
|
|
* representation of the stack is stored such that all ProfileEntry
|
|
* instances are volatile. These methods would not be available unless they
|
|
* were marked as volatile as well
|
|
*/
|
|
|
|
bool js() volatile {
|
|
JS_ASSERT_IF(sp == NULL, script_ != NULL);
|
|
return sp == NULL;
|
|
}
|
|
|
|
uint32_t line() volatile { JS_ASSERT(!js()); return idx; }
|
|
JSScript *script() volatile { JS_ASSERT(js()); return script_; }
|
|
void *stackAddress() volatile { return sp; }
|
|
const char *label() volatile { return string; }
|
|
|
|
void setLine(uint32_t aLine) volatile { JS_ASSERT(!js()); idx = aLine; }
|
|
void setLabel(const char *aString) volatile { string = aString; }
|
|
void setStackAddress(void *aSp) volatile { sp = aSp; }
|
|
void setScript(JSScript *aScript) volatile { script_ = aScript; }
|
|
|
|
/* we can't know the layout of JSScript, so look in vm/SPSProfiler.cpp */
|
|
JS_FRIEND_API(jsbytecode *) pc() volatile;
|
|
JS_FRIEND_API(void) setPC(jsbytecode *pc) volatile;
|
|
|
|
static size_t offsetOfString() { return offsetof(ProfileEntry, string); }
|
|
static size_t offsetOfStackAddress() { return offsetof(ProfileEntry, sp); }
|
|
static size_t offsetOfPCIdx() { return offsetof(ProfileEntry, idx); }
|
|
static size_t offsetOfScript() { return offsetof(ProfileEntry, script_); }
|
|
|
|
/*
|
|
* The index used in the entry can either be a line number or the offset of
|
|
* a pc into a script's code. To signify a NULL pc, use a -1 index. This is
|
|
* checked against in pc() and setPC() to set/get the right pc.
|
|
*/
|
|
static const int32_t NullPCIndex = -1;
|
|
};
|
|
|
|
JS_FRIEND_API(void)
|
|
SetRuntimeProfilingStack(JSRuntime *rt, ProfileEntry *stack, uint32_t *size,
|
|
uint32_t max);
|
|
|
|
JS_FRIEND_API(void)
|
|
EnableRuntimeProfilingStack(JSRuntime *rt, bool enabled);
|
|
|
|
JS_FRIEND_API(jsbytecode*)
|
|
ProfilingGetPC(JSRuntime *rt, JSScript *script, void *ip);
|
|
|
|
#ifdef JS_THREADSAFE
|
|
JS_FRIEND_API(bool)
|
|
ContextHasOutstandingRequests(const JSContext *cx);
|
|
#endif
|
|
|
|
JS_FRIEND_API(bool)
|
|
HasUnrootedGlobal(const JSContext *cx);
|
|
|
|
typedef void
|
|
(* ActivityCallback)(void *arg, JSBool active);
|
|
|
|
/*
|
|
* Sets a callback that is run whenever the runtime goes idle - the
|
|
* last active request ceases - and begins activity - when it was
|
|
* idle and a request begins.
|
|
*/
|
|
JS_FRIEND_API(void)
|
|
SetActivityCallback(JSRuntime *rt, ActivityCallback cb, void *arg);
|
|
|
|
extern JS_FRIEND_API(const JSStructuredCloneCallbacks *)
|
|
GetContextStructuredCloneCallbacks(JSContext *cx);
|
|
|
|
extern JS_FRIEND_API(bool)
|
|
CanCallContextDebugHandler(JSContext *cx);
|
|
|
|
extern JS_FRIEND_API(JSTrapStatus)
|
|
CallContextDebugHandler(JSContext *cx, JSScript *script, jsbytecode *bc, Value *rval);
|
|
|
|
extern JS_FRIEND_API(bool)
|
|
IsContextRunningJS(JSContext *cx);
|
|
|
|
typedef void
|
|
(* AnalysisPurgeCallback)(JSRuntime *rt, JSFlatString *desc);
|
|
|
|
extern JS_FRIEND_API(AnalysisPurgeCallback)
|
|
SetAnalysisPurgeCallback(JSRuntime *rt, AnalysisPurgeCallback callback);
|
|
|
|
typedef JSBool
|
|
(* DOMInstanceClassMatchesProto)(JSHandleObject protoObject, uint32_t protoID,
|
|
uint32_t depth);
|
|
struct JSDOMCallbacks {
|
|
DOMInstanceClassMatchesProto instanceClassMatchesProto;
|
|
};
|
|
typedef struct JSDOMCallbacks DOMCallbacks;
|
|
|
|
extern JS_FRIEND_API(void)
|
|
SetDOMCallbacks(JSRuntime *rt, const DOMCallbacks *callbacks);
|
|
|
|
extern JS_FRIEND_API(const DOMCallbacks *)
|
|
GetDOMCallbacks(JSRuntime *rt);
|
|
|
|
extern JS_FRIEND_API(JSObject *)
|
|
GetTestingFunctions(JSContext *cx);
|
|
|
|
/*
|
|
* Helper to convert FreeOp to JSFreeOp when the definition of FreeOp is not
|
|
* available and the compiler does not know that FreeOp inherits from
|
|
* JSFreeOp.
|
|
*/
|
|
inline JSFreeOp *
|
|
CastToJSFreeOp(FreeOp *fop)
|
|
{
|
|
return reinterpret_cast<JSFreeOp *>(fop);
|
|
}
|
|
|
|
/* Implemented in jsexn.cpp. */
|
|
|
|
/*
|
|
* Get an error type name from a JSExnType constant.
|
|
* Returns NULL for invalid arguments and JSEXN_INTERNALERR
|
|
*/
|
|
extern JS_FRIEND_API(const jschar*)
|
|
GetErrorTypeName(JSContext* cx, int16_t exnType);
|
|
|
|
#ifdef DEBUG
|
|
extern JS_FRIEND_API(unsigned)
|
|
GetEnterCompartmentDepth(JSContext* cx);
|
|
#endif
|
|
|
|
/* Implemented in jswrapper.cpp. */
|
|
typedef enum NukeReferencesToWindow {
|
|
NukeWindowReferences,
|
|
DontNukeWindowReferences
|
|
} NukeReferencesToWindow;
|
|
|
|
/*
|
|
* These filters are designed to be ephemeral stack classes, and thus don't
|
|
* do any rooting or holding of their members.
|
|
*/
|
|
struct CompartmentFilter {
|
|
virtual bool match(JSCompartment *c) const = 0;
|
|
};
|
|
|
|
struct AllCompartments : public CompartmentFilter {
|
|
virtual bool match(JSCompartment *c) const { return true; }
|
|
};
|
|
|
|
struct ContentCompartmentsOnly : public CompartmentFilter {
|
|
virtual bool match(JSCompartment *c) const {
|
|
return !IsSystemCompartment(c);
|
|
}
|
|
};
|
|
|
|
struct ChromeCompartmentsOnly : public CompartmentFilter {
|
|
virtual bool match(JSCompartment *c) const {
|
|
return IsSystemCompartment(c);
|
|
}
|
|
};
|
|
|
|
struct SingleCompartment : public CompartmentFilter {
|
|
JSCompartment *ours;
|
|
SingleCompartment(JSCompartment *c) : ours(c) {}
|
|
virtual bool match(JSCompartment *c) const { return c == ours; }
|
|
};
|
|
|
|
struct CompartmentsWithPrincipals : public CompartmentFilter {
|
|
JSPrincipals *principals;
|
|
CompartmentsWithPrincipals(JSPrincipals *p) : principals(p) {}
|
|
virtual bool match(JSCompartment *c) const {
|
|
return JS_GetCompartmentPrincipals(c) == principals;
|
|
}
|
|
};
|
|
|
|
extern JS_FRIEND_API(JSBool)
|
|
NukeCrossCompartmentWrappers(JSContext* cx,
|
|
const CompartmentFilter& sourceFilter,
|
|
const CompartmentFilter& targetFilter,
|
|
NukeReferencesToWindow nukeReferencesToWindow);
|
|
|
|
/* Specify information about ListBase proxies in the DOM, for use by ICs. */
|
|
|
|
/*
|
|
* The ListBaseShadowsCheck function will be called to check if the property for
|
|
* id should be gotten from the prototype, or if there is an own property that
|
|
* shadows it.
|
|
* If DoesntShadow is returned then the slot at listBaseExpandoSlot should
|
|
* either be undefined or point to an expando object that would contain the own
|
|
* property.
|
|
* If DoesntShadowUnique is returned then the slot at listBaseExpandoSlot should
|
|
* contain a private pointer to a ExpandoAndGeneration, which contains a
|
|
* JS::Value that should either be undefined or point to an expando object, and
|
|
* a uint32 value. If that value changes then the IC for getting a property will
|
|
* be invalidated.
|
|
*/
|
|
|
|
struct ExpandoAndGeneration {
|
|
ExpandoAndGeneration()
|
|
: expando(UndefinedValue()),
|
|
generation(0)
|
|
{}
|
|
|
|
Value expando;
|
|
uint32_t generation;
|
|
};
|
|
|
|
typedef enum ListBaseShadowsResult {
|
|
ShadowCheckFailed,
|
|
Shadows,
|
|
DoesntShadow,
|
|
DoesntShadowUnique
|
|
} ListBaseShadowsResult;
|
|
typedef ListBaseShadowsResult
|
|
(* ListBaseShadowsCheck)(JSContext* cx, JSHandleObject object, JSHandleId id);
|
|
JS_FRIEND_API(void)
|
|
SetListBaseInformation(void *listBaseHandlerFamily, uint32_t listBaseExpandoSlot,
|
|
ListBaseShadowsCheck listBaseShadowsCheck);
|
|
|
|
void *GetListBaseHandlerFamily();
|
|
uint32_t GetListBaseExpandoSlot();
|
|
ListBaseShadowsCheck GetListBaseShadowsCheck();
|
|
|
|
} /* namespace js */
|
|
|
|
/* Implemented in jsdate.cpp. */
|
|
|
|
/*
|
|
* Detect whether the internal date value is NaN. (Because failure is
|
|
* out-of-band for js_DateGet*)
|
|
*/
|
|
extern JS_FRIEND_API(JSBool)
|
|
js_DateIsValid(JSObject* obj);
|
|
|
|
extern JS_FRIEND_API(double)
|
|
js_DateGetMsecSinceEpoch(JSObject *obj);
|
|
|
|
/* Implemented in jscntxt.cpp. */
|
|
|
|
/*
|
|
* Report an exception, which is currently realized as a printf-style format
|
|
* string and its arguments.
|
|
*/
|
|
typedef enum JSErrNum {
|
|
#define MSG_DEF(name, number, count, exception, format) \
|
|
name = number,
|
|
#include "js.msg"
|
|
#undef MSG_DEF
|
|
JSErr_Limit
|
|
} JSErrNum;
|
|
|
|
extern JS_FRIEND_API(const JSErrorFormatString *)
|
|
js_GetErrorMessage(void *userRef, const char *locale, const unsigned errorNumber);
|
|
|
|
/* Implemented in jsclone.cpp. */
|
|
|
|
extern JS_FRIEND_API(uint64_t)
|
|
js_GetSCOffset(JSStructuredCloneWriter* writer);
|
|
|
|
/* Typed Array functions, implemented in jstypedarray.cpp */
|
|
|
|
namespace js {
|
|
namespace ArrayBufferView {
|
|
|
|
enum ViewType {
|
|
TYPE_INT8 = 0,
|
|
TYPE_UINT8,
|
|
TYPE_INT16,
|
|
TYPE_UINT16,
|
|
TYPE_INT32,
|
|
TYPE_UINT32,
|
|
TYPE_FLOAT32,
|
|
TYPE_FLOAT64,
|
|
|
|
/*
|
|
* Special type that is a uint8_t, but assignments are clamped to [0, 256).
|
|
* Treat the raw data type as a uint8_t.
|
|
*/
|
|
TYPE_UINT8_CLAMPED,
|
|
|
|
/*
|
|
* Type returned for a DataView. Note that there is no single element type
|
|
* in this case.
|
|
*/
|
|
TYPE_DATAVIEW,
|
|
|
|
TYPE_MAX
|
|
};
|
|
|
|
} /* namespace ArrayBufferView */
|
|
} /* namespace js */
|
|
|
|
typedef js::ArrayBufferView::ViewType JSArrayBufferViewType;
|
|
|
|
/*
|
|
* Create a new typed array with nelements elements.
|
|
*
|
|
* These functions (except the WithBuffer variants) fill in the array with zeros.
|
|
*/
|
|
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt8Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint8Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint8ClampedArray(JSContext *cx, uint32_t nelements);
|
|
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt16Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint16Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt32Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint32Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewFloat32Array(JSContext *cx, uint32_t nelements);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewFloat64Array(JSContext *cx, uint32_t nelements);
|
|
|
|
/*
|
|
* Create a new typed array and copy in values from the given object. The
|
|
* object is used as if it were an array; that is, the new array (if
|
|
* successfully created) will have length given by array.length, and its
|
|
* elements will be those specified by array[0], array[1], and so on, after
|
|
* conversion to the typed array element type.
|
|
*/
|
|
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt8ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint8ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint8ClampedArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt16ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint16ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt32ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint32ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewFloat32ArrayFromArray(JSContext *cx, JSObject *array);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewFloat64ArrayFromArray(JSContext *cx, JSObject *array);
|
|
|
|
/*
|
|
* Create a new typed array using the given ArrayBuffer for storage. The
|
|
* length value is optional; if -1 is passed, enough elements to use up the
|
|
* remainder of the byte array is used as the default value.
|
|
*/
|
|
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt8ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint8ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint8ClampedArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt16ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint16ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewInt32ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewUint32ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewFloat32ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewFloat64ArrayWithBuffer(JSContext *cx, JSObject *arrayBuffer,
|
|
uint32_t byteOffset, int32_t length);
|
|
|
|
/*
|
|
* Create a new ArrayBuffer with the given byte length.
|
|
*/
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_NewArrayBuffer(JSContext *cx, uint32_t nbytes);
|
|
|
|
/*
|
|
* Check whether obj supports JS_GetTypedArray* APIs. Note that this may return
|
|
* false if a security wrapper is encountered that denies the unwrapping. If
|
|
* this test or one of the JS_Is*Array tests succeeds, then it is safe to call
|
|
* the various accessor JSAPI calls defined below.
|
|
*/
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsTypedArrayObject(JSObject *obj);
|
|
|
|
/*
|
|
* Check whether obj supports JS_GetArrayBufferView* APIs. Note that this may
|
|
* return false if a security wrapper is encountered that denies the
|
|
* unwrapping. If this test or one of the more specific tests succeeds, then it
|
|
* is safe to call the various ArrayBufferView accessor JSAPI calls defined
|
|
* below.
|
|
*/
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsArrayBufferViewObject(JSObject *obj);
|
|
|
|
/*
|
|
* Test for specific typed array types (ArrayBufferView subtypes)
|
|
*/
|
|
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsInt8Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsUint8Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsUint8ClampedArray(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsInt16Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsUint16Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsInt32Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsUint32Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsFloat32Array(JSObject *obj);
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsFloat64Array(JSObject *obj);
|
|
|
|
/*
|
|
* Unwrap Typed arrays all at once. Return NULL without throwing if the object
|
|
* cannot be viewed as the correct typed array, or the typed array object on
|
|
* success, filling both outparameters.
|
|
*/
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsInt8Array(JSObject *obj, uint32_t *length, int8_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsUint8Array(JSObject *obj, uint32_t *length, uint8_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsUint8ClampedArray(JSObject *obj, uint32_t *length, uint8_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsInt16Array(JSObject *obj, uint32_t *length, int16_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsUint16Array(JSObject *obj, uint32_t *length, uint16_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsInt32Array(JSObject *obj, uint32_t *length, int32_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsUint32Array(JSObject *obj, uint32_t *length, uint32_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsFloat32Array(JSObject *obj, uint32_t *length, float **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsFloat64Array(JSObject *obj, uint32_t *length, double **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsArrayBufferView(JSObject *obj, uint32_t *length, uint8_t **data);
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetObjectAsArrayBuffer(JSObject *obj, uint32_t *length, uint8_t **data);
|
|
|
|
/*
|
|
* Get the type of elements in a typed array, or TYPE_DATAVIEW if a DataView.
|
|
*
|
|
* |obj| must have passed a JS_IsArrayBufferView/JS_Is*Array test, or somehow
|
|
* be known that it would pass such a test: it is an ArrayBufferView or a
|
|
* wrapper of an ArrayBufferView, and the unwrapping will succeed.
|
|
*/
|
|
extern JS_FRIEND_API(JSArrayBufferViewType)
|
|
JS_GetArrayBufferViewType(JSObject *obj);
|
|
|
|
/*
|
|
* Check whether obj supports the JS_GetArrayBuffer* APIs. Note that this may
|
|
* return false if a security wrapper is encountered that denies the
|
|
* unwrapping. If this test succeeds, then it is safe to call the various
|
|
* accessor JSAPI calls defined below.
|
|
*/
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsArrayBufferObject(JSObject *obj);
|
|
|
|
/*
|
|
* Return the available byte length of an array buffer.
|
|
*
|
|
* |obj| must have passed a JS_IsArrayBufferObject test, or somehow be known
|
|
* that it would pass such a test: it is an ArrayBuffer or a wrapper of an
|
|
* ArrayBuffer, and the unwrapping will succeed.
|
|
*/
|
|
extern JS_FRIEND_API(uint32_t)
|
|
JS_GetArrayBufferByteLength(JSObject *obj);
|
|
|
|
/*
|
|
* Return a pointer to an array buffer's data. The buffer is still owned by the
|
|
* array buffer object, and should not be modified on another thread. The
|
|
* returned pointer is stable across GCs.
|
|
*
|
|
* |obj| must have passed a JS_IsArrayBufferObject test, or somehow be known
|
|
* that it would pass such a test: it is an ArrayBuffer or a wrapper of an
|
|
* ArrayBuffer, and the unwrapping will succeed.
|
|
*/
|
|
extern JS_FRIEND_API(uint8_t *)
|
|
JS_GetArrayBufferData(JSObject *obj);
|
|
|
|
/*
|
|
* Return the number of elements in a typed array.
|
|
*
|
|
* |obj| must have passed a JS_IsTypedArrayObject/JS_Is*Array test, or somehow
|
|
* be known that it would pass such a test: it is a typed array or a wrapper of
|
|
* a typed array, and the unwrapping will succeed.
|
|
*/
|
|
extern JS_FRIEND_API(uint32_t)
|
|
JS_GetTypedArrayLength(JSObject *obj);
|
|
|
|
/*
|
|
* Return the byte offset from the start of an array buffer to the start of a
|
|
* typed array view.
|
|
*
|
|
* |obj| must have passed a JS_IsTypedArrayObject/JS_Is*Array test, or somehow
|
|
* be known that it would pass such a test: it is a typed array or a wrapper of
|
|
* a typed array, and the unwrapping will succeed.
|
|
*/
|
|
extern JS_FRIEND_API(uint32_t)
|
|
JS_GetTypedArrayByteOffset(JSObject *obj);
|
|
|
|
/*
|
|
* Return the byte length of a typed array.
|
|
*
|
|
* |obj| must have passed a JS_IsTypedArrayObject/JS_Is*Array test, or somehow
|
|
* be known that it would pass such a test: it is a typed array or a wrapper of
|
|
* a typed array, and the unwrapping will succeed.
|
|
*/
|
|
extern JS_FRIEND_API(uint32_t)
|
|
JS_GetTypedArrayByteLength(JSObject *obj);
|
|
|
|
/*
|
|
* Check whether obj supports JS_ArrayBufferView* APIs. Note that this may
|
|
* return false if a security wrapper is encountered that denies the
|
|
* unwrapping.
|
|
*/
|
|
extern JS_FRIEND_API(JSBool)
|
|
JS_IsArrayBufferViewObject(JSObject *obj);
|
|
|
|
/*
|
|
* More generic name for JS_GetTypedArrayByteLength to cover DataViews as well
|
|
*/
|
|
extern JS_FRIEND_API(uint32_t)
|
|
JS_GetArrayBufferViewByteLength(JSObject *obj);
|
|
|
|
/*
|
|
* Return a pointer to the start of the data referenced by a typed array. The
|
|
* data is still owned by the typed array, and should not be modified on
|
|
* another thread.
|
|
*
|
|
* |obj| must have passed a JS_Is*Array test, or somehow be known that it would
|
|
* pass such a test: it is a typed array or a wrapper of a typed array, and the
|
|
* unwrapping will succeed.
|
|
*/
|
|
|
|
extern JS_FRIEND_API(int8_t *)
|
|
JS_GetInt8ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(uint8_t *)
|
|
JS_GetUint8ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(uint8_t *)
|
|
JS_GetUint8ClampedArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(int16_t *)
|
|
JS_GetInt16ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(uint16_t *)
|
|
JS_GetUint16ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(int32_t *)
|
|
JS_GetInt32ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(uint32_t *)
|
|
JS_GetUint32ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(float *)
|
|
JS_GetFloat32ArrayData(JSObject *obj);
|
|
extern JS_FRIEND_API(double *)
|
|
JS_GetFloat64ArrayData(JSObject *obj);
|
|
|
|
/*
|
|
* Same as above, but for any kind of ArrayBufferView. Prefer the type-specific
|
|
* versions when possible.
|
|
*/
|
|
extern JS_FRIEND_API(void *)
|
|
JS_GetArrayBufferViewData(JSObject *obj);
|
|
|
|
/*
|
|
* Return the ArrayBuffer underlying an ArrayBufferView. If the buffer has been
|
|
* neutered, this will still return the neutered buffer. |obj| must be an
|
|
* object that would return true for JS_IsArrayBufferViewObject().
|
|
*/
|
|
extern JS_FRIEND_API(JSObject *)
|
|
JS_GetArrayBufferViewBuffer(JSObject *obj);
|
|
|
|
/*
|
|
* Check whether obj supports JS_GetDataView* APIs.
|
|
*/
|
|
JS_FRIEND_API(JSBool)
|
|
JS_IsDataViewObject(JSObject *obj);
|
|
|
|
/*
|
|
* Return the byte offset of a data view into its array buffer. |obj| must be a
|
|
* DataView.
|
|
*
|
|
* |obj| must have passed a JS_IsDataViewObject test, or somehow be known that
|
|
* it would pass such a test: it is a data view or a wrapper of a data view,
|
|
* and the unwrapping will succeed.
|
|
*/
|
|
JS_FRIEND_API(uint32_t)
|
|
JS_GetDataViewByteOffset(JSObject *obj);
|
|
|
|
/*
|
|
* Return the byte length of a data view.
|
|
*
|
|
* |obj| must have passed a JS_IsDataViewObject test, or somehow be known that
|
|
* it would pass such a test: it is a data view or a wrapper of a data view,
|
|
* and the unwrapping will succeed. If cx is NULL, then DEBUG builds may be
|
|
* unable to assert when unwrapping should be disallowed.
|
|
*/
|
|
JS_FRIEND_API(uint32_t)
|
|
JS_GetDataViewByteLength(JSObject *obj);
|
|
|
|
/*
|
|
* Return a pointer to the beginning of the data referenced by a DataView.
|
|
*
|
|
* |obj| must have passed a JS_IsDataViewObject test, or somehow be known that
|
|
* it would pass such a test: it is a data view or a wrapper of a data view,
|
|
* and the unwrapping will succeed. If cx is NULL, then DEBUG builds may be
|
|
* unable to assert when unwrapping should be disallowed.
|
|
*/
|
|
JS_FRIEND_API(void *)
|
|
JS_GetDataViewData(JSObject *obj);
|
|
|
|
/*
|
|
* This struct contains metadata passed from the DOM to the JS Engine for JIT
|
|
* optimizations on DOM property accessors. Eventually, this should be made
|
|
* available to general JSAPI users, but we are not currently ready to do so.
|
|
*/
|
|
typedef bool
|
|
(* JSJitPropertyOp)(JSContext *cx, JSHandleObject thisObj,
|
|
void *specializedThis, JS::Value *vp);
|
|
typedef bool
|
|
(* JSJitMethodOp)(JSContext *cx, JSHandleObject thisObj,
|
|
void *specializedThis, unsigned argc, JS::Value *vp);
|
|
|
|
struct JSJitInfo {
|
|
enum OpType {
|
|
Getter,
|
|
Setter,
|
|
Method
|
|
};
|
|
|
|
JSJitPropertyOp op;
|
|
uint32_t protoID;
|
|
uint32_t depth;
|
|
OpType type;
|
|
bool isInfallible; /* Is op fallible? False in setters. */
|
|
bool isConstant; /* Getting a construction-time constant? */
|
|
bool isPure; /* As long as no non-pure DOM things happen, will
|
|
keep returning the same value for the given
|
|
"this" object" */
|
|
JSValueType returnType; /* The return type tag. Might be JSVAL_TYPE_UNKNOWN */
|
|
};
|
|
|
|
static JS_ALWAYS_INLINE const JSJitInfo *
|
|
FUNCTION_VALUE_TO_JITINFO(const JS::Value& v)
|
|
{
|
|
JS_ASSERT(js::GetObjectClass(&v.toObject()) == &js::FunctionClass);
|
|
return reinterpret_cast<js::shadow::Function *>(&v.toObject())->jitinfo;
|
|
}
|
|
|
|
/* Statically asserted in jsfun.h. */
|
|
static const unsigned JS_FUNCTION_INTERPRETED_BIT = 0x1;
|
|
|
|
static JS_ALWAYS_INLINE void
|
|
SET_JITINFO(JSFunction * func, const JSJitInfo *info)
|
|
{
|
|
js::shadow::Function *fun = reinterpret_cast<js::shadow::Function *>(func);
|
|
JS_ASSERT(!(fun->flags & JS_FUNCTION_INTERPRETED_BIT));
|
|
fun->jitinfo = info;
|
|
}
|
|
|
|
/*
|
|
* Engine-internal extensions of jsid. This code is here only until we
|
|
* eliminate Gecko's dependencies on it!
|
|
*/
|
|
|
|
static JS_ALWAYS_INLINE jsid
|
|
JSID_FROM_BITS(size_t bits)
|
|
{
|
|
jsid id;
|
|
JSID_BITS(id) = bits;
|
|
return id;
|
|
}
|
|
|
|
/*
|
|
* Must not be used on atoms that are representable as integer jsids.
|
|
* Prefer NameToId or AtomToId over this function:
|
|
*
|
|
* A PropertyName is an atom that does not contain an integer in the range
|
|
* [0, UINT32_MAX]. However, jsid can only hold an integer in the range
|
|
* [0, JSID_INT_MAX] (where JSID_INT_MAX == 2^31-1). Thus, for the range of
|
|
* integers (JSID_INT_MAX, UINT32_MAX], to represent as a jsid 'id', it must be
|
|
* the case JSID_IS_ATOM(id) and !JSID_TO_ATOM(id)->isPropertyName(). In most
|
|
* cases when creating a jsid, code does not have to care about this corner
|
|
* case because:
|
|
*
|
|
* - When given an arbitrary JSAtom*, AtomToId must be used, which checks for
|
|
* integer atoms representable as integer jsids, and does this conversion.
|
|
*
|
|
* - When given a PropertyName*, NameToId can be used which which does not need
|
|
* to do any dynamic checks.
|
|
*
|
|
* Thus, it is only the rare third case which needs this function, which
|
|
* handles any JSAtom* that is known not to be representable with an int jsid.
|
|
*/
|
|
static JS_ALWAYS_INLINE jsid
|
|
NON_INTEGER_ATOM_TO_JSID(JSAtom *atom)
|
|
{
|
|
JS_ASSERT(((size_t)atom & 0x7) == 0);
|
|
jsid id = JSID_FROM_BITS((size_t)atom);
|
|
JS_ASSERT(id == INTERNED_STRING_TO_JSID(NULL, (JSString*)atom));
|
|
return id;
|
|
}
|
|
|
|
/* All strings stored in jsids are atomized, but are not necessarily property names. */
|
|
static JS_ALWAYS_INLINE JSBool
|
|
JSID_IS_ATOM(jsid id)
|
|
{
|
|
return JSID_IS_STRING(id);
|
|
}
|
|
|
|
static JS_ALWAYS_INLINE JSBool
|
|
JSID_IS_ATOM(jsid id, JSAtom *atom)
|
|
{
|
|
return id == JSID_FROM_BITS((size_t)atom);
|
|
}
|
|
|
|
static JS_ALWAYS_INLINE JSAtom *
|
|
JSID_TO_ATOM(jsid id)
|
|
{
|
|
return (JSAtom *)JSID_TO_STRING(id);
|
|
}
|
|
|
|
JS_STATIC_ASSERT(sizeof(jsid) == JS_BYTES_PER_WORD);
|
|
|
|
namespace js {
|
|
|
|
static JS_ALWAYS_INLINE Value
|
|
IdToValue(jsid id)
|
|
{
|
|
if (JSID_IS_STRING(id))
|
|
return StringValue(JSID_TO_STRING(id));
|
|
if (JS_LIKELY(JSID_IS_INT(id)))
|
|
return Int32Value(JSID_TO_INT(id));
|
|
if (JS_LIKELY(JSID_IS_OBJECT(id)))
|
|
return ObjectValue(*JSID_TO_OBJECT(id));
|
|
JS_ASSERT(JSID_IS_VOID(id));
|
|
return UndefinedValue();
|
|
}
|
|
|
|
static JS_ALWAYS_INLINE jsval
|
|
IdToJsval(jsid id)
|
|
{
|
|
return IdToValue(id);
|
|
}
|
|
|
|
extern JS_FRIEND_API(bool)
|
|
IsReadOnlyDateMethod(JS::IsAcceptableThis test, JS::NativeImpl method);
|
|
|
|
extern JS_FRIEND_API(bool)
|
|
IsTypedArrayThisCheck(JS::IsAcceptableThis test);
|
|
|
|
enum CTypesActivityType {
|
|
CTYPES_CALL_BEGIN,
|
|
CTYPES_CALL_END,
|
|
CTYPES_CALLBACK_BEGIN,
|
|
CTYPES_CALLBACK_END
|
|
};
|
|
|
|
typedef void
|
|
(* CTypesActivityCallback)(JSContext *cx, CTypesActivityType type);
|
|
|
|
/*
|
|
* Sets a callback that is run whenever js-ctypes is about to be used when
|
|
* calling into C.
|
|
*/
|
|
JS_FRIEND_API(void)
|
|
SetCTypesActivityCallback(JSRuntime *rt, CTypesActivityCallback cb);
|
|
|
|
class JS_FRIEND_API(AutoCTypesActivityCallback) {
|
|
private:
|
|
JSContext *cx;
|
|
CTypesActivityCallback callback;
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|
CTypesActivityType endType;
|
|
MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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|
|
|
public:
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|
AutoCTypesActivityCallback(JSContext *cx, CTypesActivityType beginType,
|
|
CTypesActivityType endType
|
|
MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
|
|
~AutoCTypesActivityCallback() {
|
|
DoEndCallback();
|
|
}
|
|
void DoEndCallback() {
|
|
if (callback) {
|
|
callback(cx, endType);
|
|
callback = NULL;
|
|
}
|
|
}
|
|
};
|
|
|
|
#ifdef DEBUG
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|
extern JS_FRIEND_API(void)
|
|
assertEnteredPolicy(JSContext *cx, JSObject *obj, jsid id);
|
|
#else
|
|
inline void assertEnteredPolicy(JSContext *cx, JSObject *obj, jsid id) {};
|
|
#endif
|
|
|
|
/* ES5 8.12.8. */
|
|
extern JS_FRIEND_API(JSBool)
|
|
DefaultValue(JSContext *cx, HandleObject obj, JSType hint, MutableHandleValue vp);
|
|
|
|
} /* namespace js */
|
|
|
|
extern JS_FRIEND_API(JSBool)
|
|
js_DefineOwnProperty(JSContext *cx, JSObject *objArg, jsid idArg,
|
|
const js::PropertyDescriptor& descriptor, JSBool *bp);
|
|
|
|
extern JS_FRIEND_API(JSBool)
|
|
js_ReportIsNotFunction(JSContext *cx, const JS::Value& v);
|
|
|
|
#endif /* jsfriendapi_h___ */
|