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 ***** */
39 
40 #ifndef jsprvtd_h___
41 #define jsprvtd_h___
42 /*
43  * JS private typename definitions.
44  *
45  * This header is included only in other .h files, for convenience and for
46  * simplicity of type naming.  The alternative for structures is to use tags,
47  * which are named the same as their typedef names (legal in C/C++, and less
48  * noisy than suffixing the typedef name with "Struct" or "Str").  Instead,
49  * all .h files that include this file may use the same typedef name, whether
50  * declaring a pointer to struct type, or defining a member of struct type.
51  *
52  * A few fundamental scalar types are defined here too.  Neither the scalar
53  * nor the struct typedefs should change much, therefore the nearly-global
54  * make dependency induced by this file should not prove painful.
55  */
56 
57 #include "jspubtd.h"
58 
59 /* Internal identifier (jsid) macros. */
60 #define JSID_ATOM                   0x0
61 #define JSID_INT                    0x1
62 #define JSID_OBJECT                 0x2
63 #define JSID_TAGMASK                0x3
64 #define JSID_TAG(id)                ((id) & JSID_TAGMASK)
65 #define JSID_SETTAG(id,t)           ((id) | (t))
66 #define JSID_CLRTAG(id)             ((id) & ~(jsid)JSID_TAGMASK)
67 
68 #define JSID_IS_ATOM(id)            (JSID_TAG(id) == JSID_ATOM)
69 #define JSID_TO_ATOM(id)            ((JSAtom *)(id))
70 #define ATOM_TO_JSID(atom)          ((jsid)(atom))
71 #define ATOM_JSID_TO_JSVAL(id)      ATOM_KEY(JSID_TO_ATOM(id))
72 
73 #define JSID_IS_INT(id)             ((id) & JSID_INT)
74 #define JSID_TO_INT(id)             ((jsint)(id) >> 1)
75 #define INT_TO_JSID(i)              (((jsint)(i) << 1) | JSID_INT)
76 #define INT_JSID_TO_JSVAL(id)       (id)
77 #define INT_JSVAL_TO_JSID(v)        (v)
78 
79 #define JSID_IS_OBJECT(id)          (JSID_TAG(id) == JSID_OBJECT)
80 #define JSID_TO_OBJECT(id)          ((JSObject *) JSID_CLRTAG(id))
81 #define OBJECT_TO_JSID(obj)         ((jsid)(obj) | JSID_OBJECT)
82 #define OBJECT_JSID_TO_JSVAL(id)    OBJECT_TO_JSVAL(JSID_CLRTAG(id))
83 #define OBJECT_JSVAL_TO_JSID(v)     OBJECT_TO_JSID(JSVAL_TO_OBJECT(v))
84 
85 /* Scalar typedefs. */
86 typedef uint8  jsbytecode;
87 typedef uint8  jssrcnote;
88 typedef uint32 jsatomid;
89 
90 /* Struct typedefs. */
91 typedef struct JSArgumentFormatMap  JSArgumentFormatMap;
92 typedef struct JSCodeGenerator      JSCodeGenerator;
93 typedef struct JSDependentString    JSDependentString;
94 typedef struct JSGCThing            JSGCThing;
95 typedef struct JSGenerator          JSGenerator;
96 typedef struct JSParseNode          JSParseNode;
97 typedef struct JSSharpObjectMap     JSSharpObjectMap;
98 typedef struct JSThread             JSThread;
99 typedef struct JSToken              JSToken;
100 typedef struct JSTokenPos           JSTokenPos;
101 typedef struct JSTokenPtr           JSTokenPtr;
102 typedef struct JSTokenStream        JSTokenStream;
103 typedef struct JSTreeContext        JSTreeContext;
104 typedef struct JSTryNote            JSTryNote;
105 
106 /* Friend "Advanced API" typedefs. */
107 typedef struct JSAtom               JSAtom;
108 typedef struct JSAtomList           JSAtomList;
109 typedef struct JSAtomListElement    JSAtomListElement;
110 typedef struct JSAtomMap            JSAtomMap;
111 typedef struct JSAtomState          JSAtomState;
112 typedef struct JSCodeSpec           JSCodeSpec;
113 typedef struct JSPrinter            JSPrinter;
114 typedef struct JSRegExp             JSRegExp;
115 typedef struct JSRegExpStatics      JSRegExpStatics;
116 typedef struct JSScope              JSScope;
117 typedef struct JSScopeOps           JSScopeOps;
118 typedef struct JSScopeProperty      JSScopeProperty;
119 typedef struct JSStackHeader        JSStackHeader;
120 typedef struct JSStringBuffer       JSStringBuffer;
121 typedef struct JSSubString          JSSubString;
122 typedef struct JSXML                JSXML;
123 typedef struct JSXMLNamespace       JSXMLNamespace;
124 typedef struct JSXMLQName           JSXMLQName;
125 typedef struct JSXMLArray           JSXMLArray;
126 typedef struct JSXMLArrayCursor     JSXMLArrayCursor;
127 
128 /* "Friend" types used by jscntxt.h and jsdbgapi.h. */
129 typedef enum JSTrapStatus {
130     JSTRAP_ERROR,
131     JSTRAP_CONTINUE,
132     JSTRAP_RETURN,
133     JSTRAP_THROW,
134     JSTRAP_LIMIT
135 } JSTrapStatus;
136 
137 typedef JSTrapStatus
138 (* JS_DLL_CALLBACK JSTrapHandler)(JSContext *cx, JSScript *script,
139                                   jsbytecode *pc, jsval *rval, void *closure);
140 
141 typedef JSBool
142 (* JS_DLL_CALLBACK JSWatchPointHandler)(JSContext *cx, JSObject *obj, jsval id,
143                                         jsval old, jsval *newp, void *closure);
144 
145 /* called just after script creation */
146 typedef void
147 (* JS_DLL_CALLBACK JSNewScriptHook)(JSContext  *cx,
148                                     const char *filename,  /* URL of script */
149                                     uintN      lineno,     /* first line */
150                                     JSScript   *script,
151                                     JSFunction *fun,
152                                     void       *callerdata);
153 
154 /* called just before script destruction */
155 typedef void
156 (* JS_DLL_CALLBACK JSDestroyScriptHook)(JSContext *cx,
157                                         JSScript  *script,
158                                         void      *callerdata);
159 
160 typedef void
161 (* JS_DLL_CALLBACK JSSourceHandler)(const char *filename, uintN lineno,
162                                     jschar *str, size_t length,
163                                     void **listenerTSData, void *closure);
164 
165 /*
166  * This hook captures high level script execution and function calls (JS or
167  * native).  It is used by JS_SetExecuteHook to hook top level scripts and by
168  * JS_SetCallHook to hook function calls.  It will get called twice per script
169  * or function call: just before execution begins and just after it finishes.
170  * In both cases the 'current' frame is that of the executing code.
171  *
172  * The 'before' param is JS_TRUE for the hook invocation before the execution
173  * and JS_FALSE for the invocation after the code has run.
174  *
175  * The 'ok' param is significant only on the post execution invocation to
176  * signify whether or not the code completed 'normally'.
177  *
178  * The 'closure' param is as passed to JS_SetExecuteHook or JS_SetCallHook
179  * for the 'before'invocation, but is whatever value is returned from that
180  * invocation for the 'after' invocation. Thus, the hook implementor *could*
181  * allocate a structure in the 'before' invocation and return a pointer to that
182  * structure. The pointer would then be handed to the hook for the 'after'
183  * invocation. Alternately, the 'before' could just return the same value as
184  * in 'closure' to cause the 'after' invocation to be called with the same
185  * 'closure' value as the 'before'.
186  *
187  * Returning NULL in the 'before' hook will cause the 'after' hook *not* to
188  * be called.
189  */
190 typedef void *
191 (* JS_DLL_CALLBACK JSInterpreterHook)(JSContext *cx, JSStackFrame *fp, JSBool before,
192                                       JSBool *ok, void *closure);
193 
194 typedef void
195 (* JS_DLL_CALLBACK JSObjectHook)(JSContext *cx, JSObject *obj, JSBool isNew,
196                                  void *closure);
197 
198 typedef JSBool
199 (* JS_DLL_CALLBACK JSDebugErrorHook)(JSContext *cx, const char *message,
200                                      JSErrorReport *report, void *closure);
201 
202 #endif /* jsprvtd_h___ */
203