/js/lib/Socket.IO-node/support/expresso/deps/jscoverage/js/jsinterp.h
C++ Header | 591 lines | 315 code | 78 blank | 198 comment | 21 complexity | e5dda830be4969e2c8188a1ecd3d31e5 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, MPL-2.0-no-copyleft-exception, BSD-3-Clause
- /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- * vim: set ts=8 sw=4 et tw=78:
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef jsinterp_h___
- #define jsinterp_h___
- /*
- * JS interpreter interface.
- */
- #include "jsprvtd.h"
- #include "jspubtd.h"
- #include "jsfun.h"
- #include "jsopcode.h"
- #include "jsscript.h"
- JS_BEGIN_EXTERN_C
- typedef struct JSFrameRegs {
- jsbytecode *pc; /* program counter */
- jsval *sp; /* stack pointer */
- } JSFrameRegs;
- /*
- * JS stack frame, may be allocated on the C stack by native callers. Always
- * allocated on cx->stackPool for calls from the interpreter to an interpreted
- * function.
- *
- * NB: This struct is manually initialized in jsinterp.c and jsiter.c. If you
- * add new members, update both files. But first, try to remove members. The
- * sharp* and xml* members should be moved onto the stack as local variables
- * with well-known slots, if possible.
- */
- struct JSStackFrame {
- JSFrameRegs *regs;
- jsbytecode *imacpc; /* null or interpreter macro call pc */
- jsval *slots; /* variables, locals and operand stack */
- JSObject *callobj; /* lazily created Call object */
- JSObject *argsobj; /* lazily created arguments object */
- JSObject *varobj; /* variables object, where vars go */
- JSObject *callee; /* function or script object */
- JSScript *script; /* script being interpreted */
- JSFunction *fun; /* function being called or null */
- JSObject *thisp; /* "this" pointer if in method */
- uintN argc; /* actual argument count */
- jsval *argv; /* base of argument stack slots */
- jsval rval; /* function return value */
- JSStackFrame *down; /* previous frame */
- void *annotation; /* used by Java security */
- JSObject *scopeChain; /* scope chain */
- uintN sharpDepth; /* array/object initializer depth */
- JSObject *sharpArray; /* scope for #n= initializer vars */
- uint32 flags; /* frame flags -- see below */
- JSStackFrame *dormantNext; /* next dormant frame chain */
- JSObject *xmlNamespace; /* null or default xml namespace in E4X */
- JSObject *blockChain; /* active compile-time block scopes */
- JSStackFrame *displaySave; /* previous value of display entry for
- script->staticDepth */
- #ifdef DEBUG
- jsrefcount pcDisabledSave; /* for balanced property cache control */
- #endif
- };
- #ifdef DEBUG
- #ifdef __cplusplus
- static JS_INLINE uintN
- FramePCOffset(JSStackFrame* fp)
- {
- return uintN((fp->imacpc ? fp->imacpc : fp->regs->pc) - fp->script->code);
- }
- #endif
- #endif
- static JS_INLINE jsval *
- StackBase(JSStackFrame *fp)
- {
- return fp->slots + fp->script->nfixed;
- }
- static JS_INLINE uintN
- GlobalVarCount(JSStackFrame *fp)
- {
- uintN n;
-
- JS_ASSERT(!fp->fun);
- n = fp->script->nfixed;
- if (fp->script->regexpsOffset != 0)
- n -= JS_SCRIPT_REGEXPS(fp->script)->length;
- return n;
- }
- typedef struct JSInlineFrame {
- JSStackFrame frame; /* base struct */
- JSFrameRegs callerRegs; /* parent's frame registers */
- void *mark; /* mark before inline frame */
- void *hookData; /* debugger call hook data */
- JSVersion callerVersion; /* dynamic version of calling script */
- } JSInlineFrame;
- /* JS stack frame flags. */
- #define JSFRAME_CONSTRUCTING 0x01 /* frame is for a constructor invocation */
- #define JSFRAME_COMPUTED_THIS 0x02 /* frame.thisp was computed already */
- #define JSFRAME_ASSIGNING 0x04 /* a complex (not simplex JOF_ASSIGNING) op
- is currently assigning to a property */
- #define JSFRAME_DEBUGGER 0x08 /* frame for JS_EvaluateInStackFrame */
- #define JSFRAME_EVAL 0x10 /* frame for obj_eval */
- #define JSFRAME_ROOTED_ARGV 0x20 /* frame.argv is rooted by the caller */
- #define JSFRAME_YIELDING 0x40 /* js_Interpret dispatched JSOP_YIELD */
- #define JSFRAME_ITERATOR 0x80 /* trying to get an iterator for for-in */
- #define JSFRAME_POP_BLOCKS 0x100 /* scope chain contains blocks to pop */
- #define JSFRAME_GENERATOR 0x200 /* frame belongs to generator-iterator */
- #define JSFRAME_IMACRO_START 0x400 /* imacro starting -- see jstracer.h */
- #define JSFRAME_OVERRIDE_SHIFT 24 /* override bit-set params; see jsfun.c */
- #define JSFRAME_OVERRIDE_BITS 8
- #define JSFRAME_SPECIAL (JSFRAME_DEBUGGER | JSFRAME_EVAL)
- /*
- * Property cache with structurally typed capabilities for invalidation, for
- * polymorphic callsite method/get/set speedups.
- *
- * See bug https://bugzilla.mozilla.org/show_bug.cgi?id=365851.
- */
- #define PROPERTY_CACHE_LOG2 12
- #define PROPERTY_CACHE_SIZE JS_BIT(PROPERTY_CACHE_LOG2)
- #define PROPERTY_CACHE_MASK JS_BITMASK(PROPERTY_CACHE_LOG2)
- /*
- * Add kshape rather than xor it to avoid collisions between nearby bytecode
- * that are evolving an object by setting successive properties, incrementing
- * the object's scope->shape on each set.
- */
- #define PROPERTY_CACHE_HASH(pc,kshape) \
- (((((jsuword)(pc) >> PROPERTY_CACHE_LOG2) ^ (jsuword)(pc)) + (kshape)) & \
- PROPERTY_CACHE_MASK)
- #define PROPERTY_CACHE_HASH_PC(pc,kshape) \
- PROPERTY_CACHE_HASH(pc, kshape)
- #define PROPERTY_CACHE_HASH_ATOM(atom,obj,pobj) \
- PROPERTY_CACHE_HASH((jsuword)(atom) >> 2, OBJ_SHAPE(obj))
- /*
- * Property cache value capability macros.
- */
- #define PCVCAP_PROTOBITS 4
- #define PCVCAP_PROTOSIZE JS_BIT(PCVCAP_PROTOBITS)
- #define PCVCAP_PROTOMASK JS_BITMASK(PCVCAP_PROTOBITS)
- #define PCVCAP_SCOPEBITS 4
- #define PCVCAP_SCOPESIZE JS_BIT(PCVCAP_SCOPEBITS)
- #define PCVCAP_SCOPEMASK JS_BITMASK(PCVCAP_SCOPEBITS)
- #define PCVCAP_TAGBITS (PCVCAP_PROTOBITS + PCVCAP_SCOPEBITS)
- #define PCVCAP_TAGMASK JS_BITMASK(PCVCAP_TAGBITS)
- #define PCVCAP_TAG(t) ((t) & PCVCAP_TAGMASK)
- #define PCVCAP_MAKE(t,s,p) (((t) << PCVCAP_TAGBITS) | \
- ((s) << PCVCAP_PROTOBITS) | \
- (p))
- #define PCVCAP_SHAPE(t) ((t) >> PCVCAP_TAGBITS)
- #define SHAPE_OVERFLOW_BIT JS_BIT(32 - PCVCAP_TAGBITS)
- /*
- * When sprop is not null and the shape generation triggers the GC due to a
- * shape overflow, the functions roots sprop.
- */
- extern uint32
- js_GenerateShape(JSContext *cx, JSBool gcLocked, JSScopeProperty *sprop);
- struct JSPropCacheEntry {
- jsbytecode *kpc; /* pc if vcap tag is <= 1, else atom */
- jsuword kshape; /* key shape if pc, else obj for atom */
- jsuword vcap; /* value capability, see above */
- jsuword vword; /* value word, see PCVAL_* below */
- };
- #if defined DEBUG_brendan || defined DEBUG_brendaneich
- #define JS_PROPERTY_CACHE_METERING 1
- #endif
- typedef struct JSPropertyCache {
- JSPropCacheEntry table[PROPERTY_CACHE_SIZE];
- JSBool empty;
- jsrefcount disabled; /* signed for anti-underflow asserts */
- #ifdef JS_PROPERTY_CACHE_METERING
- uint32 fills; /* number of cache entry fills */
- uint32 nofills; /* couldn't fill (e.g. default get) */
- uint32 rofills; /* set on read-only prop can't fill */
- uint32 disfills; /* fill attempts on disabled cache */
- uint32 oddfills; /* fill attempt after setter deleted */
- uint32 modfills; /* fill that rehashed to a new entry */
- uint32 brandfills; /* scope brandings to type structural
- method fills */
- uint32 noprotos; /* resolve-returned non-proto pobj */
- uint32 longchains; /* overlong scope and/or proto chain */
- uint32 recycles; /* cache entries recycled by fills */
- uint32 pcrecycles; /* pc-keyed entries recycled by atom-
- keyed fills */
- uint32 tests; /* cache probes */
- uint32 pchits; /* fast-path polymorphic op hits */
- uint32 protopchits; /* pchits hitting immediate prototype */
- uint32 initests; /* cache probes from JSOP_INITPROP */
- uint32 inipchits; /* init'ing next property pchit case */
- uint32 inipcmisses; /* init'ing next property pc misses */
- uint32 settests; /* cache probes from JOF_SET opcodes */
- uint32 addpchits; /* adding next property pchit case */
- uint32 setpchits; /* setting existing property pchit */
- uint32 setpcmisses; /* setting/adding property pc misses */
- uint32 slotchanges; /* clasp->reserveSlots result variance-
- induced slot changes */
- uint32 setmisses; /* JSOP_SET{NAME,PROP} total misses */
- uint32 idmisses; /* slow-path key id == atom misses */
- uint32 komisses; /* slow-path key object misses */
- uint32 vcmisses; /* value capability misses */
- uint32 misses; /* cache misses */
- uint32 flushes; /* cache flushes */
- uint32 pcpurges; /* shadowing purges on proto chain */
- # define PCMETER(x) x
- #else
- # define PCMETER(x) ((void)0)
- #endif
- } JSPropertyCache;
- /*
- * Property cache value tagging/untagging macros.
- */
- #define PCVAL_OBJECT 0
- #define PCVAL_SLOT 1
- #define PCVAL_SPROP 2
- #define PCVAL_TAGBITS 2
- #define PCVAL_TAGMASK JS_BITMASK(PCVAL_TAGBITS)
- #define PCVAL_TAG(v) ((v) & PCVAL_TAGMASK)
- #define PCVAL_CLRTAG(v) ((v) & ~(jsuword)PCVAL_TAGMASK)
- #define PCVAL_SETTAG(v,t) ((jsuword)(v) | (t))
- #define PCVAL_NULL 0
- #define PCVAL_IS_NULL(v) ((v) == PCVAL_NULL)
- #define PCVAL_IS_OBJECT(v) (PCVAL_TAG(v) == PCVAL_OBJECT)
- #define PCVAL_TO_OBJECT(v) ((JSObject *) (v))
- #define OBJECT_TO_PCVAL(obj) ((jsuword) (obj))
- #define PCVAL_OBJECT_TO_JSVAL(v) OBJECT_TO_JSVAL(PCVAL_TO_OBJECT(v))
- #define JSVAL_OBJECT_TO_PCVAL(v) OBJECT_TO_PCVAL(JSVAL_TO_OBJECT(v))
- #define PCVAL_IS_SLOT(v) ((v) & PCVAL_SLOT)
- #define PCVAL_TO_SLOT(v) ((jsuint)(v) >> 1)
- #define SLOT_TO_PCVAL(i) (((jsuword)(i) << 1) | PCVAL_SLOT)
- #define PCVAL_IS_SPROP(v) (PCVAL_TAG(v) == PCVAL_SPROP)
- #define PCVAL_TO_SPROP(v) ((JSScopeProperty *) PCVAL_CLRTAG(v))
- #define SPROP_TO_PCVAL(sprop) PCVAL_SETTAG(sprop, PCVAL_SPROP)
- /*
- * Fill property cache entry for key cx->fp->pc, optimized value word computed
- * from obj and sprop, and entry capability forged from 24-bit OBJ_SHAPE(obj),
- * 4-bit scopeIndex, and 4-bit protoIndex.
- */
- extern void
- js_FillPropertyCache(JSContext *cx, JSObject *obj, jsuword kshape,
- uintN scopeIndex, uintN protoIndex,
- JSObject *pobj, JSScopeProperty *sprop,
- JSPropCacheEntry **entryp);
- /*
- * Property cache lookup macros. PROPERTY_CACHE_TEST is designed to inline the
- * fast path in js_Interpret, so it makes "just-so" restrictions on parameters,
- * e.g. pobj and obj should not be the same variable, since for JOF_PROP-mode
- * opcodes, obj must not be changed because of a cache miss.
- *
- * On return from PROPERTY_CACHE_TEST, if atom is null then obj points to the
- * scope chain element in which the property was found, pobj is locked, and
- * entry is valid. If atom is non-null then no object is locked but entry is
- * still set correctly for use, e.g., by js_FillPropertyCache and atom should
- * be used as the id to find.
- *
- * We must lock pobj on a hit in order to close races with threads that might
- * be deleting a property from its scope, or otherwise invalidating property
- * caches (on all threads) by re-generating scope->shape.
- */
- #define PROPERTY_CACHE_TEST(cx, pc, obj, pobj, entry, atom) \
- do { \
- JSPropertyCache *cache_ = &JS_PROPERTY_CACHE(cx); \
- uint32 kshape_ = (JS_ASSERT(OBJ_IS_NATIVE(obj)), OBJ_SHAPE(obj)); \
- entry = &cache_->table[PROPERTY_CACHE_HASH_PC(pc, kshape_)]; \
- PCMETER(cache_->tests++); \
- JS_ASSERT(&obj != &pobj); \
- if (entry->kpc == pc && entry->kshape == kshape_) { \
- JSObject *tmp_; \
- pobj = obj; \
- JS_LOCK_OBJ(cx, pobj); \
- JS_ASSERT(PCVCAP_TAG(entry->vcap) <= 1); \
- if (PCVCAP_TAG(entry->vcap) == 1 && \
- (tmp_ = LOCKED_OBJ_GET_PROTO(pobj)) != NULL && \
- OBJ_IS_NATIVE(tmp_)) { \
- JS_UNLOCK_OBJ(cx, pobj); \
- pobj = tmp_; \
- JS_LOCK_OBJ(cx, pobj); \
- } \
- if (PCVCAP_SHAPE(entry->vcap) == OBJ_SHAPE(pobj)) { \
- PCMETER(cache_->pchits++); \
- PCMETER(!PCVCAP_TAG(entry->vcap) || cache_->protopchits++); \
- pobj = OBJ_SCOPE(pobj)->object; \
- atom = NULL; \
- break; \
- } \
- JS_UNLOCK_OBJ(cx, pobj); \
- } \
- atom = js_FullTestPropertyCache(cx, pc, &obj, &pobj, &entry); \
- if (atom) \
- PCMETER(cache_->misses++); \
- } while (0)
- extern JSAtom *
- js_FullTestPropertyCache(JSContext *cx, jsbytecode *pc,
- JSObject **objp, JSObject **pobjp,
- JSPropCacheEntry **entryp);
- extern void
- js_FlushPropertyCache(JSContext *cx);
- extern void
- js_FlushPropertyCacheForScript(JSContext *cx, JSScript *script);
- extern void
- js_DisablePropertyCache(JSContext *cx);
- extern void
- js_EnablePropertyCache(JSContext *cx);
- /*
- * Interpreter stack arena-pool alloc and free functions.
- */
- extern JS_FRIEND_API(jsval *)
- js_AllocStack(JSContext *cx, uintN nslots, void **markp);
- extern JS_FRIEND_API(void)
- js_FreeStack(JSContext *cx, void *mark);
- /*
- * Refresh and return fp->scopeChain. It may be stale if block scopes are
- * active but not yet reflected by objects in the scope chain. If a block
- * scope contains a with, eval, XML filtering predicate, or similar such
- * dynamically scoped construct, then compile-time block scope at fp->blocks
- * must reflect at runtime.
- */
- extern JSObject *
- js_GetScopeChain(JSContext *cx, JSStackFrame *fp);
- /*
- * Given a context and a vector of [callee, this, args...] for a function that
- * was specified with a JSFUN_THISP_PRIMITIVE flag, get the primitive value of
- * |this| into *thisvp. In doing so, if |this| is an object, insist it is an
- * instance of clasp and extract its private slot value to return via *thisvp.
- *
- * NB: this function loads and uses *vp before storing *thisvp, so the two may
- * alias the same jsval.
- */
- extern JSBool
- js_GetPrimitiveThis(JSContext *cx, jsval *vp, JSClass *clasp, jsval *thisvp);
- /*
- * For a call with arguments argv including argv[-1] (nominal |this|) and
- * argv[-2] (callee) replace null |this| with callee's parent, replace
- * primitive values with the equivalent wrapper objects and censor activation
- * objects as, per ECMA-262, they may not be referred to by |this|. argv[-1]
- * must not be a JSVAL_VOID.
- */
- extern JSObject *
- js_ComputeThis(JSContext *cx, JSBool lazy, jsval *argv);
- extern const uint16 js_PrimitiveTestFlags[];
- #define PRIMITIVE_THIS_TEST(fun,thisv) \
- (JS_ASSERT(!JSVAL_IS_VOID(thisv)), \
- JSFUN_THISP_TEST(JSFUN_THISP_FLAGS((fun)->flags), \
- js_PrimitiveTestFlags[JSVAL_TAG(thisv) - 1]))
- /*
- * NB: js_Invoke requires that cx is currently running JS (i.e., that cx->fp
- * is non-null), and that vp points to the callee, |this| parameter, and
- * actual arguments of the call. [vp .. vp + 2 + argc) must belong to the last
- * JS stack segment that js_AllocStack allocated. The function may use the
- * space available after vp + 2 + argc in the stack segment for temporaries,
- * so the caller should not use that space for values that must be preserved
- * across the call.
- */
- extern JS_FRIEND_API(JSBool)
- js_Invoke(JSContext *cx, uintN argc, jsval *vp, uintN flags);
- /*
- * Consolidated js_Invoke flags simply rename certain JSFRAME_* flags, so that
- * we can share bits stored in JSStackFrame.flags and passed to:
- *
- * js_Invoke
- * js_InternalInvoke
- * js_ValueToFunction
- * js_ValueToFunctionObject
- * js_ValueToCallableObject
- * js_ReportIsNotFunction
- *
- * See jsfun.h for the latter four and flag renaming macros.
- */
- #define JSINVOKE_CONSTRUCT JSFRAME_CONSTRUCTING
- #define JSINVOKE_ITERATOR JSFRAME_ITERATOR
- /*
- * Mask to isolate construct and iterator flags for use with jsfun.h functions.
- */
- #define JSINVOKE_FUNFLAGS (JSINVOKE_CONSTRUCT | JSINVOKE_ITERATOR)
- /*
- * "Internal" calls may come from C or C++ code using a JSContext on which no
- * JS is running (!cx->fp), so they may need to push a dummy JSStackFrame.
- */
- #define js_InternalCall(cx,obj,fval,argc,argv,rval) \
- js_InternalInvoke(cx, obj, fval, 0, argc, argv, rval)
- #define js_InternalConstruct(cx,obj,fval,argc,argv,rval) \
- js_InternalInvoke(cx, obj, fval, JSINVOKE_CONSTRUCT, argc, argv, rval)
- extern JSBool
- js_InternalInvoke(JSContext *cx, JSObject *obj, jsval fval, uintN flags,
- uintN argc, jsval *argv, jsval *rval);
- extern JSBool
- js_InternalGetOrSet(JSContext *cx, JSObject *obj, jsid id, jsval fval,
- JSAccessMode mode, uintN argc, jsval *argv, jsval *rval);
- extern JSBool
- js_Execute(JSContext *cx, JSObject *chain, JSScript *script,
- JSStackFrame *down, uintN flags, jsval *result);
- extern JSBool
- js_InvokeConstructor(JSContext *cx, uintN argc, JSBool clampReturn, jsval *vp);
- extern JSBool
- js_Interpret(JSContext *cx);
- #define JSPROP_INITIALIZER 0x100 /* NB: Not a valid property attribute. */
- extern JSBool
- js_CheckRedeclaration(JSContext *cx, JSObject *obj, jsid id, uintN attrs,
- JSObject **objp, JSProperty **propp);
- extern JSBool
- js_StrictlyEqual(JSContext *cx, jsval lval, jsval rval);
- /*
- * JS_LONE_INTERPRET indicates that the compiler should see just the code for
- * the js_Interpret function when compiling jsinterp.cpp. The rest of the code
- * from the file should be visible only when compiling jsinvoke.cpp. It allows
- * platform builds to optimize selectively js_Interpret when the granularity
- * of the optimizations with the given compiler is a compilation unit.
- *
- * JS_STATIC_INTERPRET is the modifier for functions defined in jsinterp.cpp
- * that only js_Interpret calls. When JS_LONE_INTERPRET is true all such
- * functions are declared below.
- */
- #ifndef JS_LONE_INTERPRET
- # ifdef _MSC_VER
- # define JS_LONE_INTERPRET 0
- # else
- # define JS_LONE_INTERPRET 1
- # endif
- #endif
- #if !JS_LONE_INTERPRET
- # define JS_STATIC_INTERPRET static
- #else
- # define JS_STATIC_INTERPRET
- extern jsval *
- js_AllocRawStack(JSContext *cx, uintN nslots, void **markp);
- extern void
- js_FreeRawStack(JSContext *cx, void *mark);
- /*
- * ECMA requires "the global object", but in embeddings such as the browser,
- * which have multiple top-level objects (windows, frames, etc. in the DOM),
- * we prefer fun's parent. An example that causes this code to run:
- *
- * // in window w1
- * function f() { return this }
- * function g() { return f }
- *
- * // in window w2
- * var h = w1.g()
- * alert(h() == w1)
- *
- * The alert should display "true".
- */
- extern JSObject *
- js_ComputeGlobalThis(JSContext *cx, JSBool lazy, jsval *argv);
- extern JSBool
- js_EnterWith(JSContext *cx, jsint stackIndex);
- extern void
- js_LeaveWith(JSContext *cx);
- extern JSClass *
- js_IsActiveWithOrBlock(JSContext *cx, JSObject *obj, int stackDepth);
- extern jsint
- js_CountWithBlocks(JSContext *cx, JSStackFrame *fp);
- /*
- * Unwind block and scope chains to match the given depth. The function sets
- * fp->sp on return to stackDepth.
- */
- extern JSBool
- js_UnwindScope(JSContext *cx, JSStackFrame *fp, jsint stackDepth,
- JSBool normalUnwind);
- extern JSBool
- js_InternNonIntElementId(JSContext *cx, JSObject *obj, jsval idval, jsid *idp);
- extern JSBool
- js_OnUnknownMethod(JSContext *cx, jsval *vp);
- /*
- * Find the results of incrementing or decrementing *vp. For pre-increments,
- * both *vp and *vp2 will contain the result on return. For post-increments,
- * vp will contain the original value converted to a number and vp2 will get
- * the result. Both vp and vp2 must be roots.
- */
- extern JSBool
- js_DoIncDec(JSContext *cx, const JSCodeSpec *cs, jsval *vp, jsval *vp2);
- /*
- * Opcode tracing helper. When len is not 0, cx->fp->regs->pc[-len] gives the
- * previous opcode.
- */
- extern void
- js_TraceOpcode(JSContext *cx, jsint len);
- /*
- * JS_OPMETER helper functions.
- */
- extern void
- js_MeterOpcodePair(JSOp op1, JSOp op2);
- extern void
- js_MeterSlotOpcode(JSOp op, uint32 slot);
- #endif /* JS_LONE_INTERPRET */
- JS_END_EXTERN_C
- #endif /* jsinterp_h___ */