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/** @file
*
* VBox HDD container test utility - scripting engine, internal script structures.
*/
/*
* Copyright (C) 2013-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef VBOX_INCLUDED_SRC_testcase_VDScriptInternal_h
#define VBOX_INCLUDED_SRC_testcase_VDScriptInternal_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/list.h>
#include <iprt/string.h>
#include "VDScript.h"
/**
* Script function which can be called.
*/
typedef struct VDSCRIPTFN
{
/** String space core. */
RTSTRSPACECORE Core;
/** Flag whether function is defined in the source or was
* registered from the outside. */
bool fExternal;
/** Flag dependent data. */
union
{
/** Data for functions defined in the source. */
struct
{
/** Pointer to the AST defining the function. */
PVDSCRIPTASTFN pAstFn;
} Internal;
/** Data for external defined functions. */
struct
{
/** Callback function. */
PFNVDSCRIPTCALLBACK pfnCallback;
/** Opaque user data. */
void *pvUser;
} External;
} Type;
/** Return type of the function. */
VDSCRIPTTYPE enmTypeRetn;
/** Number of arguments the function takes. */
unsigned cArgs;
/** Variable sized array of argument types. */
VDSCRIPTTYPE aenmArgTypes[1];
} VDSCRIPTFN;
/** Pointer to a script function registration structure. */
typedef VDSCRIPTFN *PVDSCRIPTFN;
/** Pointer to a tokenize state. */
typedef struct VDTOKENIZER *PVDTOKENIZER;
/**
* Script context.
*/
typedef struct VDSCRIPTCTXINT
{
/** String space of external registered and source defined functions. */
RTSTRSPACE hStrSpaceFn;
/** List of ASTs for functions - VDSCRIPTASTFN. */
RTLISTANCHOR ListAst;
/** Pointer to the current tokenizer state. */
PVDTOKENIZER pTokenizer;
} VDSCRIPTCTXINT;
/** Pointer to a script context. */
typedef VDSCRIPTCTXINT *PVDSCRIPTCTXINT;
/**
* Check the context for type correctness.
*
* @returns VBox status code.
* @param pThis The script context.
*/
DECLHIDDEN(int) vdScriptCtxCheck(PVDSCRIPTCTXINT pThis);
/**
* Interprete a given function AST. The executed functions
* must be type correct, otherwise the behavior is undefined
* (Will assert in debug builds).
*
* @returns VBox status code.
* @param pThis The script context.
* @param pszFn The function name to interprete.
* @param paArgs Arguments to pass to the function.
* @param cArgs Number of arguments.
* @param pRet Where to store the return value on success.
*
* @note: The AST is not modified in any way during the interpretation process.
*/
DECLHIDDEN(int) vdScriptCtxInterprete(PVDSCRIPTCTXINT pThis, const char *pszFn,
PVDSCRIPTARG paArgs, unsigned cArgs,
PVDSCRIPTARG pRet);
#endif /* !VBOX_INCLUDED_SRC_testcase_VDScriptInternal_h */
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