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d3c870640c
- Optimize integer ++ and -- to avoid double-to-int, which is quite costly for
some compilers (ftol on Windows with MSVC).
- Optimized arguments[i] and arguments.length references to use bytecodes that
avoid creating an arguments object for the current frame. This entailed
simplifying the compiler to avoid flagging functions and scripts that set
arguments, since we have code in jsfun.c to catch such sets at runtime.
- The code generator now eliminates useless expression statements, giving a
strict warning about them.
- Rationalized jsemit.c's LookupArgOrVar to have well-defined results in *pn.
Eliminate bytecode specializations for argument and local variable gets and
sets from jsparse.c -- these precede jsemit.c's LookupArgOrVar and frustrate
it, by setting pn_slot non-negative too early.
- Code generation errors set report->filename and report->lineno, rather than
hacking "{0}, line {1}: " into the localized message.
- Bogus JSFRAME_VAROBJBUG removed, JSOPTION_VAROBJFIX is sufficient.
- Spruce up jsinterp.c macros to use JS_BEGIN/END_MACRO brackets if possible.
- Avoid calling JS_PropertyStub. The call is too costly compared to a branch
in the caller.
135 lines
4.5 KiB
C
135 lines
4.5 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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#ifndef jsfun_h___
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#define jsfun_h___
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/*
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* JS function definitions.
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*/
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#include "jsprvtd.h"
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#include "jspubtd.h"
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JS_BEGIN_EXTERN_C
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struct JSFunction {
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jsrefcount nrefs; /* number of referencing objects */
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JSObject *object; /* back-pointer to GC'ed object header */
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JSNative native; /* native method pointer or null */
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JSScript *script; /* interpreted bytecode descriptor or null */
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uint16 nargs; /* minimum number of actual arguments */
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uint16 extra; /* number of arg slots for local GC roots */
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uint16 nvars; /* number of local variables */
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uint8 flags; /* bound method and other flags, see jsapi.h */
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uint8 spare; /* reserved for future use */
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JSAtom *atom; /* name for diagnostics and decompiling */
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JSClass *clasp; /* if non-null, constructor for this class */
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};
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extern JSClass js_ArgumentsClass;
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extern JSClass js_CallClass;
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/* JS_FRIEND_DATA so that JSVAL_IS_FUNCTION is callable from outside */
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extern JS_FRIEND_DATA(JSClass) js_FunctionClass;
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/*
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* NB: jsapi.h and jsobj.h must be included before any call to this macro.
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*/
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#define JSVAL_IS_FUNCTION(cx, v) \
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(JSVAL_IS_OBJECT(v) && JSVAL_TO_OBJECT(v) && \
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OBJ_GET_CLASS(cx, JSVAL_TO_OBJECT(v)) == &js_FunctionClass)
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extern JSBool
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js_IsIdentifier(JSString *str);
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extern JSObject *
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js_InitFunctionClass(JSContext *cx, JSObject *obj);
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extern JSObject *
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js_InitArgumentsClass(JSContext *cx, JSObject *obj);
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extern JSObject *
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js_InitCallClass(JSContext *cx, JSObject *obj);
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extern JSFunction *
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js_NewFunction(JSContext *cx, JSObject *funobj, JSNative native, uintN nargs,
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uintN flags, JSObject *parent, JSAtom *atom);
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extern JSObject *
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js_CloneFunctionObject(JSContext *cx, JSObject *funobj, JSObject *parent);
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extern JSBool
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js_LinkFunctionObject(JSContext *cx, JSFunction *fun, JSObject *object);
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extern JSFunction *
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js_DefineFunction(JSContext *cx, JSObject *obj, JSAtom *atom, JSNative native,
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uintN nargs, uintN flags);
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extern JSFunction *
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js_ValueToFunction(JSContext *cx, jsval *vp, JSBool constructing);
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extern void
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js_ReportIsNotFunction(JSContext *cx, jsval *vp, JSBool constructing);
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extern JSObject *
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js_GetCallObject(JSContext *cx, JSStackFrame *fp, JSObject *parent);
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extern JSBool
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js_PutCallObject(JSContext *cx, JSStackFrame *fp);
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extern JSBool
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js_GetCallVariable(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
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extern JSBool
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js_SetCallVariable(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
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extern JSBool
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js_GetArgsValue(JSContext *cx, JSStackFrame *fp, jsval *vp);
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extern JSBool
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js_GetArgsProperty(JSContext *cx, JSStackFrame *fp, jsid id,
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JSObject **objp, jsval *vp);
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extern JSObject *
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js_GetArgsObject(JSContext *cx, JSStackFrame *fp);
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extern JSBool
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js_PutArgsObject(JSContext *cx, JSStackFrame *fp);
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extern JSBool
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js_XDRFunction(JSXDRState *xdr, JSObject **objp);
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JS_END_EXTERN_C
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#endif /* jsfun_h___ */
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