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netsurf/javascript/jsapi.h

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/*
* Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file
* spidermonkey jsapi compatability glue.
*/
#ifndef _NETSURF_JAVASCRIPT_JSAPI_H_
#define _NETSURF_JAVASCRIPT_JSAPI_H_
/* include the correct header */
#ifdef WITH_MOZJS
#include "js/jsapi.h"
#else
#include "mozjs/jsapi.h"
#endif
/* logging macros */
#define JSLOG(args...) LOG(args)
#ifdef ENABLE_VERBOSE_JS_DEBUG
#define JSDBG(args...) LOG(args)
#else
#define JSDBG(args...)
#endif
#if JS_VERSION < 180
/************************** Spidermonkey 1.7.0 **************************/
#include <string.h>
#ifndef JSVERSION_LATEST
#define JSVERSION_LATEST JS_VERSION
#endif
#ifndef JSOPTION_JIT
#define JSOPTION_JIT 0
#endif
/* *CAUTION* these native function macros introduce and use jsapi_this
* and jsapi_rval variables, native function code should not conflict
* with these
*/
/* native function definition with five parameters */
#define JSAPI_FUNC(name, cx, argc, vp) \
jsapi_func_##name(cx, JSObject *jsapi_this, argc, vp, jsval *jsapi_rval)
/* native function return value - No macro available */
#define JSAPI_FUNC_RVAL(cx, vp) (jsapi_rval)
/* native function return value setter - No macro available */
#define JSAPI_FUNC_SET_RVAL(cx, vp, v) (*jsapi_rval = (v))
/* arguments */
#define JSAPI_FUNC_ARGV(cx, vp) (vp)
/* check if a jsval is an object */
#define JSAPI_JSVAL_IS_OBJECT(v) JSVAL_IS_OBJECT(v)
/* native function specifier with five parameters and no JS_FS macro */
#define JSAPI_FS(name, nargs, flags) \
{ #name, jsapi_func_##name, nargs, flags, 0 }
/* native function specifier list end */
#define JSAPI_FS_END { NULL, NULL, 0, 0, 0 }
/* native proprty definition */
#define JSAPI_PROP(name, cx, obj, vp) \
jsapi_property_##name(cx, obj, jsval jsapi_id, vp)
#define JSAPI_STRICTPROP JSAPI_PROP
/* native property return value */
#define JSAPI_PROP_RVAL(cx, vp) (*(vp))
/* native property getter return value */
#define JSAPI_PROP_SET_RVAL(cx, vp, v) (*(vp) = (v))
/* native property ID value as a jsval */
#define JSAPI_PROP_IDVAL(cx, vp) (*(vp) = jsapi_id)
/* native property specifier */
#define JSAPI_PS(name, fnname, tinyid, flags) \
{ name , tinyid , flags , jsapi_property_##fnname##_get , jsapi_property_##fnname##_set }
/* native property specifier with no setter */
#define JSAPI_PS_RO(name, fnname, tinyid, flags) \
{ name , tinyid , flags | JSPROP_READONLY, jsapi_property_##fnname##_get , NULL }
/* native property specifier list end */
#define JSAPI_PS_END { NULL, 0, 0, NULL, NULL }
#define JS_StrictPropertyStub JS_PropertyStub
/* The object instance in a native call */
/* "this" JSObject getter */
JSObject * js_ComputeThis(JSContext *cx, JSObject *thisp, void *argv);
#define JSAPI_THIS_OBJECT(cx, vp) \
js_ComputeThis(cx, JSVAL_TO_OBJECT(vp[-1]), vp)
static inline JSObject *
JS_NewCompartmentAndGlobalObject(JSContext *cx,
JSClass *jsclass,
JSPrincipals *principals)
{
JSObject *global;
global = JS_NewObject(cx, jsclass, NULL, NULL);
if (global == NULL) {
return NULL;
}
return global;
}
#define JSString_to_char(injsstring, outchar, outlen) \
outchar = JS_GetStringBytes(injsstring); \
outlen = strlen(outchar)
/* string type cast */
#define JSAPI_STRING_TO_JSVAL(str) ((str == NULL)?JSVAL_NULL:STRING_TO_JSVAL(str))
#define JSAPI_CLASS_NO_INTERNAL_MEMBERS NULL
/* Garbage Collector */
/* macros for GC marking */
#define JSAPI_JSCLASS_MARK_IS_TRACE 0
#define JSAPI_JSCLASS_MARKOP(x) (x)
#define JSAPI_MARKOP(name) uint32_t name(JSContext *cx, JSObject *obj, void *arg)
#define JSAPI_MARKCX cx
#define JSAPI_GCMARK(thing) JS_MarkGCThing(cx, thing, "object", arg)
#define JSAPI_MARKOP_RETURN(value) return value
/* Macros for manipulating GC root */
#define JSAPI_ADD_OBJECT_ROOT(cx, obj) JS_AddRoot(cx, obj)
#define JSAPI_REMOVE_OBJECT_ROOT(cx, obj) JS_RemoveRoot(cx, obj)
#define JSAPI_ADD_VALUE_ROOT(cx, obj) JS_AddRoot(cx, obj)
#define JSAPI_REMOVE_VALUE_ROOT(cx, obj) JS_RemoveRoot(cx, obj)
#elif JS_VERSION == 180
/************************** Spidermonkey 1.8.0 **************************/
#include <string.h>
/* *CAUTION* these macros introduce and use jsapi_this and jsapi_rval
* parameters, native function code should not conflict with these
*/
/* five parameter jsapi native call */
#define JSAPI_FUNC(name, cx, argc, vp) \
jsapi_func_##name(cx, JSObject *jsapi_this, argc, vp, jsval *jsapi_rval)
/* five parameter function descriptor */
#define JSAPI_FS(name, nargs, flags) \
JS_FS(#name, jsapi_func_##name, nargs, flags, 0)
/* function descriptor end */
#define JSAPI_FS_END JS_FS_END
/* return value */
#define JSAPI_RVAL(cx, vp) JS_RVAL(cx, jsapi_rval)
/* return value setter */
#define JSAPI_FUNC_SET_RVAL(cx, vp, v) JS_SET_RVAL(cx, jsapi_rval, v)
/* arguments */
#define JSAPI_FUNC_ARGV(cx, vp) (vp)
/* check if a jsval is an object */
#define JSAPI_JSVAL_IS_OBJECT(v) JSVAL_IS_OBJECT(v)
/* The object instance in a native call */
#define JSAPI_THIS_OBJECT(cx,vp) jsapi_this
/* proprty native calls */
#define JSAPI_PROP(name, cx, obj, vp) \
jsapi_property_##name(cx, obj, jsval jsapi_id, vp)
#define JSAPI_STRICTPROP JSAPI_PROP
/* native property return value */
#define JSAPI_PROP_RVAL JS_RVAL
/* native property return value setter */
#define JSAPI_PROP_SET_RVAL JS_SET_RVAL
/* native property ID value as a jsval */
#define JSAPI_PROP_IDVAL(cx, vp) (*(vp) = jsapi_id)
/* property specifier */
#define JSAPI_PS(name, fnname, tinyid, flags) \
{ name , tinyid , flags , jsapi_property_##fnname##_get , jsapi_property_##fnname##_set }
#define JSAPI_PS_RO(name, fnname, tinyid, flags) \
{ name , tinyid , flags | JSPROP_READONLY, jsapi_property_##fnname##_get , NULL }
#define JSAPI_PS_END { NULL, 0, 0, NULL, NULL }
static inline JSObject *
JS_NewCompartmentAndGlobalObject(JSContext *cx,
JSClass *jsclass,
JSPrincipals *principals)
{
JSObject *global;
global = JS_NewObject(cx, jsclass, NULL, NULL);
if (global == NULL) {
return NULL;
}
return global;
}
#define JS_StrictPropertyStub JS_PropertyStub
#define JSString_to_char(injsstring, outchar, outlen) \
outchar = JS_GetStringBytes(injsstring); \
outlen = strlen(outchar)
/* string type cast */
#define JSAPI_STRING_TO_JSVAL(str) ((str == NULL)?JSVAL_NULL:STRING_TO_JSVAL(str))
#define JSAPI_CLASS_NO_INTERNAL_MEMBERS NULL
/* Garbage Collector */
/* GC marking */
#ifdef JSCLASS_MARK_IS_TRACE
/* mark function pointer requires casting */
#define JSAPI_JSCLASS_MARK_IS_TRACE JSCLASS_MARK_IS_TRACE
#define JSAPI_JSCLASS_MARKOP(x) ((JSMarkOp)x)
#else
/* mark function pointer does not require casting */
#define JSAPI_JSCLASS_MARK_IS_TRACE 0
#define JSAPI_JSCLASS_MARKOP(x) (x)
#endif
#define JSAPI_MARKOP(name) JSBool name(JSTracer *trc, JSObject *obj)
#define JSAPI_MARKCX trc->context
#define JSAPI_GCMARK(thing) JS_CallTracer(trc, thing, JSTRACE_OBJECT);
#define JSAPI_MARKOP_RETURN(value) return value
/* Macros for manipulating GC root */
#define JSAPI_ADD_OBJECT_ROOT(cx, obj) JS_AddRoot(cx, obj)
#define JSAPI_REMOVE_OBJECT_ROOT(cx, obj) JS_RemoveRoot(cx, obj)
#define JSAPI_ADD_VALUE_ROOT(cx, obj) JS_AddRoot(cx, obj)
#define JSAPI_REMOVE_VALUE_ROOT(cx, obj) JS_RemoveRoot(cx, obj)
#else /* #if JS_VERSION == 180 */
/************************** Spidermonkey 1.8.5 **************************/
/* three parameter jsapi native call */
#define JSAPI_FUNC(name, cx, argc, vp) jsapi_func_##name(cx, argc, vp)
/* three parameter function descriptor */
#define JSAPI_FS(name, nargs, flags) \
JS_FS(#name, jsapi_func_##name, nargs, flags)
/* function descriptor end */
#define JSAPI_FS_END JS_FS_END
/* return value */
#define JSAPI_RVAL JS_RVAL
/* return value setter */
#define JSAPI_FUNC_SET_RVAL JS_SET_RVAL
/* arguments */
#define JSAPI_FUNC_ARGV(cx, vp) JS_ARGV(cx,vp)
/* check if a jsval is an object */
#define JSAPI_JSVAL_IS_OBJECT(v) JSVAL_IS_OBJECT(v)
/* The docuemntation says this is obsolete and should be
* ((JSVAL_IS_NULL(v)) || (JSVAL_IS_PRIMITIVE(v)))
* which doesnt work
*/
/* The object instance in a native call */
#define JSAPI_THIS_OBJECT(cx,vp) JS_THIS_OBJECT(cx,vp)
/* proprty native calls */
#define JSAPI_PROP(name, cx, obj, vp) \
jsapi_property_##name(cx, obj, jsid jsapi_id, vp)
#define JSAPI_STRICTPROP(name, cx, obj, vp) \
jsapi_property_##name(cx, obj, jsid jsapi_id, JSBool strict, vp)
/* native property return value */
#define JSAPI_PROP_RVAL JS_RVAL
/* native property getter return value */
#define JSAPI_PROP_SET_RVAL JS_SET_RVAL
/* native property ID value as a jsval */
#define JSAPI_PROP_IDVAL(cx, vp) JS_IdToValue(cx, jsapi_id, vp)
/* property specifier */
#define JSAPI_PS(name, fnname, tinyid, flags) { \
name, \
tinyid, \
flags, \
jsapi_property_##fnname##_get, \
jsapi_property_##fnname##_set \
}
#define JSAPI_PS_RO(name, fnname, tinyid, flags) { \
name, \
tinyid, \
flags | JSPROP_READONLY, \
jsapi_property_##fnname##_get, \
NULL \
}
#define JSAPI_PS_END { NULL, 0, 0, NULL, NULL }
#define JSString_to_char(injsstring, outchar, outlen) \
outlen = JS_GetStringLength(injsstring); \
outchar = alloca(sizeof(char)*(outlen+1)); \
JS_EncodeStringToBuffer(injsstring, outchar, outlen); \
outchar[outlen] = '\0'
/* string type cast */
#define JSAPI_STRING_TO_JSVAL(str) ((str == NULL)?JSVAL_NULL:STRING_TO_JSVAL(str))
#define JSAPI_CLASS_NO_INTERNAL_MEMBERS JSCLASS_NO_INTERNAL_MEMBERS
/* GC marking */
#ifdef JSCLASS_MARK_IS_TRACE
/* mark function pointer requires casting */
#define JSAPI_JSCLASS_MARK_IS_TRACE JSCLASS_MARK_IS_TRACE
#define JSAPI_JSCLASS_MARKOP(x) ((JSMarkOp)x)
#else
/* mark function pointer does not require casting */
#define JSAPI_JSCLASS_MARK_IS_TRACE 0
#define JSAPI_JSCLASS_MARKOP(x) (x)
#endif
#define JSAPI_MARKOP(name) void name(JSTracer *trc, JSObject *obj)
#define JSAPI_MARKCX trc->context
#define JSAPI_GCMARK(thing) JS_CallTracer(trc, thing, JSTRACE_OBJECT);
#define JSAPI_MARKOP_RETURN(value)
/* Macros for manipulating GC root */
#define JSAPI_ADD_OBJECT_ROOT(cx, obj) JS_AddObjectRoot(cx, obj)
#define JSAPI_REMOVE_OBJECT_ROOT(cx, obj) JS_RemoveObjectRoot(cx, obj)
#define JSAPI_ADD_VALUE_ROOT(cx, val) JS_AddValueRoot(cx, val)
#define JSAPI_REMOVE_VALUE_ROOT(cx, val) JS_RemoveValueRoot(cx, val)
#endif
/************************** **************************/
#endif
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