1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 *
3 * ***** BEGIN LICENSE BLOCK *****
4 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 *
6 * The contents of this file are subject to the Mozilla Public License Version
7 * 1.1 (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 * http://www.mozilla.org/MPL/
10 *
11 * Software distributed under the License is distributed on an "AS IS" basis,
12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 * for the specific language governing rights and limitations under the
14 * License.
15 *
16 * The Original Code is Mozilla Communicator client code, released
17 * March 31, 1998.
18 *
19 * The Initial Developer of the Original Code is
20 * Netscape Communications Corporation.
21 * Portions created by the Initial Developer are Copyright (C) 1998
22 * the Initial Developer. All Rights Reserved.
23 *
24 * Contributor(s):
25 *
26 * Alternatively, the contents of this file may be used under the terms of
27 * either of the GNU General Public License Version 2 or later (the "GPL"),
28 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 * in which case the provisions of the GPL or the LGPL are applicable instead
30 * of those above. If you wish to allow use of your version of this file only
31 * under the terms of either the GPL or the LGPL, and not to allow others to
32 * use your version of this file under the terms of the MPL, indicate your
33 * decision by deleting the provisions above and replace them with the notice
34 * and other provisions required by the GPL or the LGPL. If you do not delete
35 * the provisions above, a recipient may use your version of this file under
36 * the terms of any one of the MPL, the GPL or the LGPL.
37 *
38 * ***** END LICENSE BLOCK ***** */
40 #ifndef jsfun_h___
41 #define jsfun_h___
42 /*
43 * JS function definitions.
44 */
45 #include "jsprvtd.h"
46 #include "jspubtd.h"
48 JS_BEGIN_EXTERN_C
50 struct JSFunction {
51 jsrefcount nrefs; /* number of referencing objects */
52 JSObject *object; /* back-pointer to GC'ed object header */
53 JSNative native; /* native method pointer or null */
54 JSScript *script; /* interpreted bytecode descriptor or null */
55 uint16 nargs; /* minimum number of actual arguments */
56 uint16 extra; /* number of arg slots for local GC roots */
57 uint16 nvars; /* number of local variables */
58 uint8 flags; /* bound method and other flags, see jsapi.h */
59 uint8 spare; /* reserved for future use */
60 JSAtom *atom; /* name for diagnostics and decompiling */
61 JSClass *clasp; /* if non-null, constructor for this class */
62 };
64 extern JSClass js_ArgumentsClass;
65 extern JSClass js_CallClass;
67 /* JS_FRIEND_DATA so that JSVAL_IS_FUNCTION is callable from outside */
68 extern JS_FRIEND_DATA(JSClass) js_FunctionClass;
70 /*
71 * NB: jsapi.h and jsobj.h must be included before any call to this macro.
72 */
73 #define JSVAL_IS_FUNCTION(cx, v) \
74 (JSVAL_IS_OBJECT(v) && JSVAL_TO_OBJECT(v) && \
75 OBJ_GET_CLASS(cx, JSVAL_TO_OBJECT(v)) == &js_FunctionClass)
77 extern JSBool
78 js_fun_toString(JSContext *cx, JSObject *obj, uint32 indent,
79 uintN argc, jsval *argv, jsval *rval);
81 extern JSBool
82 js_IsIdentifier(JSString *str);
84 extern JSObject *
85 js_InitFunctionClass(JSContext *cx, JSObject *obj);
87 extern JSObject *
88 js_InitArgumentsClass(JSContext *cx, JSObject *obj);
90 extern JSObject *
91 js_InitCallClass(JSContext *cx, JSObject *obj);
93 extern JSFunction *
94 js_NewFunction(JSContext *cx, JSObject *funobj, JSNative native, uintN nargs,
95 uintN flags, JSObject *parent, JSAtom *atom);
97 extern JSObject *
98 js_CloneFunctionObject(JSContext *cx, JSObject *funobj, JSObject *parent);
100 extern JSBool
101 js_LinkFunctionObject(JSContext *cx, JSFunction *fun, JSObject *object);
103 extern JSFunction *
104 js_DefineFunction(JSContext *cx, JSObject *obj, JSAtom *atom, JSNative native,
105 uintN nargs, uintN flags);
107 /*
108 * Flags for js_ValueToFunction and js_ReportIsNotFunction. We depend on the
109 * fact that JSINVOKE_CONSTRUCT (aka JSFRAME_CONSTRUCTING) is 1, and test that
110 * with #if/#error in jsfun.c.
111 */
112 #define JSV2F_CONSTRUCT JSINVOKE_CONSTRUCT
113 #define JSV2F_SEARCH_STACK 2
115 extern JSFunction *
116 js_ValueToFunction(JSContext *cx, jsval *vp, uintN flags);
118 extern void
119 js_ReportIsNotFunction(JSContext *cx, jsval *vp, uintN flags);
121 extern JSObject *
122 js_GetCallObject(JSContext *cx, JSStackFrame *fp, JSObject *parent);
124 extern JSBool
125 js_PutCallObject(JSContext *cx, JSStackFrame *fp);
127 extern JSBool
128 js_GetCallVariable(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
130 extern JSBool
131 js_SetCallVariable(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
133 extern JSBool
134 js_GetArgsValue(JSContext *cx, JSStackFrame *fp, jsval *vp);
136 extern JSBool
137 js_GetArgsProperty(JSContext *cx, JSStackFrame *fp, jsid id,
138 JSObject **objp, jsval *vp);
140 extern JSObject *
141 js_GetArgsObject(JSContext *cx, JSStackFrame *fp);
143 extern JSBool
144 js_PutArgsObject(JSContext *cx, JSStackFrame *fp);
146 extern JSBool
147 js_XDRFunction(JSXDRState *xdr, JSObject **objp);
149 JS_END_EXTERN_C
151 #endif /* jsfun_h___ */