mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-13 18:27:35 +00:00
129 lines
5.0 KiB
C
129 lines
5.0 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape 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/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
|
|
* 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 Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the
|
|
* terms of the GNU Public License (the "GPL"), in which case the
|
|
* provisions of the GPL are applicable instead of those above.
|
|
* If you wish to allow use of your version of this file only
|
|
* under the terms of the GPL and not to allow others to use your
|
|
* version of this file under the NPL, indicate your decision by
|
|
* deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this
|
|
* file under either the NPL or the GPL.
|
|
*/
|
|
|
|
#ifndef jsscript_h___
|
|
#define jsscript_h___
|
|
/*
|
|
* JS script descriptor.
|
|
*/
|
|
#include "jsatom.h"
|
|
#include "jsprvtd.h"
|
|
|
|
JS_BEGIN_EXTERN_C
|
|
|
|
/*
|
|
* Exception handling runtime information.
|
|
*
|
|
* All fields except length are code offsets, relative to the beginning of
|
|
* the script. If script->trynotes is not null, it points to a vector of
|
|
* these structs terminated by one with catchStart == 0.
|
|
*/
|
|
struct JSTryNote {
|
|
ptrdiff_t start; /* start of try statement */
|
|
ptrdiff_t length; /* count of try statement bytecodes */
|
|
ptrdiff_t catchStart; /* start of catch block (0 if end) */
|
|
};
|
|
|
|
struct JSScript {
|
|
jsbytecode *code; /* bytecodes and their immediate operands */
|
|
uint32 length; /* length of code vector */
|
|
jsbytecode *main; /* main entry point, after predef'ing prolog */
|
|
JSVersion version; /* JS version under which script was compiled */
|
|
JSAtomMap atomMap; /* maps immediate index to literal struct */
|
|
const char *filename; /* source filename or null */
|
|
uintN lineno; /* base line number of script */
|
|
uintN depth; /* maximum stack depth in slots */
|
|
jssrcnote *notes; /* line number and other decompiling data */
|
|
JSTryNote *trynotes; /* exception table for this script */
|
|
JSPrincipals *principals; /* principals for this script */
|
|
JSObject *object; /* optional Script-class object wrapper */
|
|
};
|
|
|
|
#define JSSCRIPT_FIND_CATCH_START(script, pc, catchpc) \
|
|
JS_BEGIN_MACRO \
|
|
JSTryNote *_tn = (script)->trynotes; \
|
|
jsbytecode *_catchpc = NULL; \
|
|
if (_tn) { \
|
|
ptrdiff_t _offset = PTRDIFF(pc, (script)->main, jsbytecode); \
|
|
while (JS_UPTRDIFF(_offset, _tn->start) >= (jsuword)_tn->length) \
|
|
_tn++; \
|
|
if (_tn->catchStart) \
|
|
_catchpc = (script)->main + _tn->catchStart; \
|
|
} \
|
|
catchpc = _catchpc; \
|
|
JS_END_MACRO
|
|
|
|
extern JS_FRIEND_DATA(JSClass) js_ScriptClass;
|
|
|
|
extern JSObject *
|
|
js_InitScriptClass(JSContext *cx, JSObject *obj);
|
|
|
|
extern JSScript *
|
|
js_NewScript(JSContext *cx, uint32 length);
|
|
|
|
extern JSScript *
|
|
js_NewScriptFromParams(JSContext *cx, jsbytecode *code, uint32 length,
|
|
jsbytecode *prolog, uint32 prologLength,
|
|
const char *filename, uintN lineno, uintN depth,
|
|
jssrcnote *notes, JSTryNote *trynotes,
|
|
JSPrincipals *principals);
|
|
|
|
extern JS_FRIEND_API(JSScript *)
|
|
js_NewScriptFromCG(JSContext *cx, JSCodeGenerator *cg, JSFunction *fun);
|
|
|
|
extern void
|
|
js_DestroyScript(JSContext *cx, JSScript *script);
|
|
|
|
extern void
|
|
js_MarkScript(JSContext *cx, JSScript *script, void *arg);
|
|
|
|
extern jssrcnote *
|
|
js_GetSrcNote(JSScript *script, jsbytecode *pc);
|
|
|
|
extern uintN
|
|
js_PCToLineNumber(JSScript *script, jsbytecode *pc);
|
|
|
|
extern jsbytecode *
|
|
js_LineNumberToPC(JSScript *script, uintN lineno);
|
|
|
|
extern uintN
|
|
js_GetScriptLineExtent(JSScript *script);
|
|
|
|
extern JSBool
|
|
js_XDRScript(JSXDRState *xdr, JSScript **scriptp, JSBool *magic);
|
|
|
|
JS_END_EXTERN_C
|
|
|
|
#endif /* jsscript_h___ */
|