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https://github.com/mozilla/gecko-dev.git
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7596bde975
development branch: - Preliminary exception handling per ECMA proposal; try, multiple catchblocks, and finally. Catchblocks are of the form catch (v) or catch(v:<guard>), where guard is an optional boolean expression that is evaluated to determine whether the exception is to be caught by that block. - ECMA-proposed 'in' operator; "'foo' in o" or "4 in o" asks if o has property foo or element 4. - Added a new set of defines in jsconfig.h for js 1.4 features-in-progress. (in, instanceof, exception handling.) Default build version is now 1.4. Fixed a few conditional features that had become broken. - Progress towards porting to FreeBSD and Alpha; casts of NaN and friends to int are a little more localized. Not there yet... - New config files to compile on more OSes; various fixes to improve portability.
95 lines
3.1 KiB
C
95 lines
3.1 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef jsscript_h___
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#define jsscript_h___
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/*
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* JS script descriptor.
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*/
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#include "jsatom.h"
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#include "jsprvtd.h"
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PR_BEGIN_EXTERN_C
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/*
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* Exception handling runtime information.
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*
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* All fields except length are code offsets, relative to the beginning of
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* the script. If script->trynotes is not null, it points to a vector of
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* these structs terminated by one with start, catchStart, and finallyStart
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* all equal to 0, and length == script->length.
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*/
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struct JSTryNote {
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ptrdiff_t start; /* start of try statement */
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ptrdiff_t length; /* count of try statement bytecodes */
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ptrdiff_t catchStart; /* start of catch block (0 if none) */
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};
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struct JSScript {
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jsbytecode *code; /* bytecodes and their immediate operands */
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uint32 length; /* length of code vector */
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JSAtomMap atomMap; /* maps immediate index to literal struct */
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const char *filename; /* source filename or null */
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uintN lineno; /* base line number of script */
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uintN depth; /* maximum stack depth in slots */
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jssrcnote *notes; /* line number and other decompiling data */
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JSTryNote *trynotes; /* exception table for this script */
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JSPrincipals *principals; /* principals for this script */
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void *javaData; /* XXX extra data used by jsjava.c */
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JSObject *object; /* optional Script-class object wrapper */
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};
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extern JSClass js_ScriptClass;
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extern JSObject *
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js_InitScriptClass(JSContext *cx, JSObject *obj);
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extern JSScript *
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js_NewScript(JSContext *cx, uint32 length);
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extern JSScript *
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js_NewScriptFromParams(JSContext *cx, jsbytecode *code, uint32 length,
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const char *filename, uintN lineno, uintN depth,
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jssrcnote *notes, JSTryNote *trynotes,
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JSPrincipals *principals);
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extern JS_FRIEND_API(JSScript *)
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js_NewScriptFromCG(JSContext *cx, JSCodeGenerator *cg, JSFunction *fun);
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extern void
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js_DestroyScript(JSContext *cx, JSScript *script);
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extern jssrcnote *
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js_GetSrcNote(JSScript *script, jsbytecode *pc);
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extern uintN
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js_PCToLineNumber(JSScript *script, jsbytecode *pc);
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extern jsbytecode *
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js_LineNumberToPC(JSScript *script, uintN lineno);
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extern uintN
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js_GetScriptLineExtent(JSScript *script);
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extern JSBool
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js_XDRScript(JSXDRState *xdr, JSScript **scriptp, JSBool *magic);
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PR_END_EXTERN_C
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#endif /* jsscript_h___ */
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