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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.
159 lines
4.5 KiB
C
159 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 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 jsxdrapi_h___
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#define jsxdrapi_h___
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/*
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* JS external data representation interface API.
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*
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* The XDR system is comprised of three major parts:
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*
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* - the state serialization/deserialization APIs, which allow consumers
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* of the API to serialize JS runtime state (script bytecodes, atom maps,
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* object graphs, etc.) for later restoration. These portions
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* are implemented in various appropriate files, such as jsscript.c
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* for the script portions and jsobj.c for object state.
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* - the callback APIs through which the runtime requests an opaque
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* representation of a native object, and through which the runtime
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* constructs a live native object from an opaque representation. These
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* portions are the responsibility of the native object implementor.
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* - utility functions for en/decoding of primitive types, such as
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* JSStrings. This portion is implemented in jsxdrapi.c.
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*
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* Spiritually guided by Sun's XDR, where appropriate.
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*/
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#include "jspubtd.h"
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#include "jsprvtd.h"
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PR_BEGIN_EXTERN_C
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/* We use little-endian byteorder for all encoded data */
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#if defined IS_LITTLE_ENDIAN
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#define JSXDR_SWAB32(x) x
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#define JSXDR_SWAB16(x) x
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#elif defined IS_BIG_ENDIAN
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#define JSXDR_SWAB32(x) (((x) >> 24) | \
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(((x) >> 8) & 0xff00) | \
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(((x) << 8) & 0xff0000) | \
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((x) << 24))
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#define JSXDR_SWAB16(x) (((x) >> 8) | ((x) << 8))
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#else
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#error "unknown byte order"
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#endif
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#define JSXDR_ALIGN 4
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typedef enum JSXDRMode {
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JSXDR_ENCODE,
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JSXDR_DECODE,
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JSXDR_FREE
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} JSXDRMode;
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typedef enum JSXDRWhence {
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JSXDR_SEEK_SET,
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JSXDR_SEEK_CUR,
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JSXDR_SEEK_END
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} JSXDRWhence;
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typedef struct JSXDROps {
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JSBool (*get32)(JSXDRState *, uint32 *);
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JSBool (*set32)(JSXDRState *, uint32 *);
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JSBool (*getbytes)(JSXDRState *, char **, uint32);
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JSBool (*setbytes)(JSXDRState *, char **, uint32);
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void * (*raw)(JSXDRState *, uint32);
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JSBool (*seek)(JSXDRState *, int32, JSXDRWhence);
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uint32 (*tell)(JSXDRState *);
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void (*finalize)(JSXDRState *);
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} JSXDROps;
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struct JSXDRState {
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JSXDRMode mode;
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JSXDROps *ops;
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JSContext *cx;
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JSClass **registry;
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uintN nclasses;
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void *data;
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};
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JS_PUBLIC_API(void)
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JS_XDRNewBase(JSContext *cx, JSXDRState *xdr, JSXDRMode mode);
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JS_PUBLIC_API(JSXDRState *)
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JS_XDRNewMem(JSContext *cx, JSXDRMode mode);
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JS_PUBLIC_API(void *)
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JS_XDRMemGetData(JSXDRState *xdr, uint32 *lp);
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JS_PUBLIC_API(void)
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JS_XDRMemSetData(JSXDRState *xdr, void *data, uint32 len);
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JS_PUBLIC_API(void)
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JS_XDRDestroy(JSXDRState *xdr);
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JS_PUBLIC_API(JSBool)
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JS_XDRUint8(JSXDRState *xdr, uint8 *b);
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JS_PUBLIC_API(JSBool)
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JS_XDRUint16(JSXDRState *xdr, uint16 *s);
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JS_PUBLIC_API(JSBool)
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JS_XDRUint32(JSXDRState *xdr, uint32 *lp);
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JS_PUBLIC_API(JSBool)
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JS_XDRBytes(JSXDRState *xdr, char **bytes, uint32 len);
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JS_PUBLIC_API(JSBool)
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JS_XDRCString(JSXDRState *xdr, char **sp);
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JS_PUBLIC_API(JSBool)
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JS_XDRCStringOrNull(JSXDRState *xdr, char **sp);
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JS_PUBLIC_API(JSBool)
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JS_XDRString(JSXDRState *xdr, JSString **strp);
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JS_PUBLIC_API(JSBool)
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JS_XDRStringOrNull(JSXDRState *xdr, JSString **strp);
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JS_PUBLIC_API(JSBool)
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JS_XDRDouble(JSXDRState *xdr, jsdouble **dp);
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JS_PUBLIC_API(JSBool)
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JS_XDRValue(JSXDRState *xdr, jsval *vp);
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JS_PUBLIC_API(JSBool)
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JS_RegisterClass(JSXDRState *xdr, JSClass *clasp, uint32 *lp);
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JS_PUBLIC_API(uint32)
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JS_FindClassIdByName(JSXDRState *xdr, const char *name);
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JS_PUBLIC_API(JSClass *)
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JS_FindClassById(JSXDRState *xdr, uint32 id);
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/* Magic values */
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#define OBJ_XDRMAGIC 0xdead1000
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#define OBJ_XDRTYPE_OBJ 0xdead1001
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#define OBJ_XDRTYPE_FUN 0xdead1002
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#define OBJ_XDRTYPE_REGEXP 0xdead1003
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#define SCRIPT_XDRMAGIC 0xdead0001
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#endif /* ! jsxdrapi_h___ */
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