gecko/js/ctypes/Function.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is js-ctypes.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation <http://www.mozilla.org/>.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Mark Finkle <mark.finkle@gmail.com>, <mfinkle@mozilla.com>
* Dan Witte <dwitte@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
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#ifndef FUNCTION_H
#define FUNCTION_H
#include "Module.h"
#include "nsTArray.h"
#include "prlink.h"
#include "ffi.h"
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namespace mozilla {
namespace ctypes {
// for JS error reporting
enum ErrorNum {
#define MSG_DEF(name, number, count, exception, format) \
name = number,
#include "ctypes.msg"
#undef MSG_DEF
CTYPESERR_LIMIT
};
const JSErrorFormatString*
GetErrorMessage(void* userRef, const char* locale, const uintN errorNumber);
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struct Type
{
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ffi_type mFFIType;
TypeCode mType;
};
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struct Value
{
void* mData;
union {
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PRInt8 mInt8;
PRInt16 mInt16;
PRInt32 mInt32;
PRInt64 mInt64;
PRUint8 mUint8;
PRUint16 mUint16;
PRUint32 mUint32;
PRUint64 mUint64;
float mFloat;
double mDouble;
void* mPointer;
} mValue;
};
class Function
{
public:
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Function();
Function*& Next() { return mNext; }
static JSObject* Create(JSContext* aContext, JSObject* aLibrary, PRFuncPtr aFunc, const char* aName, jsval aCallType, jsval aResultType, jsval* aArgTypes, uintN aArgLength);
static JSBool Call(JSContext* cx, uintN argc, jsval* vp);
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~Function();
private:
bool Init(JSContext* aContext, PRFuncPtr aFunc, jsval aCallType, jsval aResultType, jsval* aArgTypes, uintN aArgLength);
bool Execute(JSContext* cx, PRUint32 argc, jsval* vp);
protected:
PRFuncPtr mFunc;
ffi_abi mCallType;
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Type mResultType;
nsAutoTArray<Type, 16> mArgTypes;
nsAutoTArray<ffi_type*, 16> mFFITypes;
ffi_cif mCIF;
Function* mNext;
};
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}
}
#endif