/**
 * Dispatch API functions
 *
 * Copyright 2000  Francois Jacques, Macadamian Technologies Inc.
 *
 * ---
 *
 * TODO: Type coercion is implemented in variant.c but not called yet.
 */

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include "winerror.h"
#include "winreg.h"         /* for HKEY_LOCAL_MACHINE */
#include "winnls.h"         /* for PRIMARYLANGID */
#include "ole.h"
#include "heap.h"
#include "wine/obj_oleaut.h"
#include "debugtools.h"

DEFAULT_DEBUG_CHANNEL(ole);
DECLARE_DEBUG_CHANNEL(typelib);


/******************************************************************************
 *		DispInvoke (OLEAUT32.30)
 *
 *
 * Calls method of an object through its IDispatch interface.
 *
 * NOTES
 * 		- Defer	method invocation to ITypeInfo::Invoke()
 *
 * RETURNS
 *
 * 		S_OK on success.
 */
HRESULT WINAPI DispInvoke(
	VOID       *_this,        /* [in] object instance */
	ITypeInfo  *ptinfo,       /* [in] object's type info */
	DISPID      dispidMember, /* [in] member id */
	USHORT      wFlags,       /* [in] kind of method call */
	DISPPARAMS *pparams,      /* [in] array of arguments */
	VARIANT    *pvarResult,   /* [out] result of method call */
	EXCEPINFO  *pexcepinfo,   /* [out] information about exception */
	UINT       *puArgErr)     /* [out] index of bad argument(if any) */
{
    HRESULT hr = E_FAIL;

    /**
     * TODO:
     * For each param, call DispGetParam to perform type coercion
     */
    FIXME("Coercion of arguments not implemented\n");

    hr = ICOM_CALL7(Invoke,
                    ptinfo,
                    _this,
                    dispidMember,
                    wFlags,
                    pparams, pvarResult, pexcepinfo, puArgErr);

    return (hr);
}


/******************************************************************************
 *		DispGetIDsOfNames (OLEAUT32.29)
 *
 * Convert a set of names to dispids, based on information 
 * contained in object's type library.
 * 
 * NOTES
 * 		- Defers to ITypeInfo::GetIDsOfNames()
 *
 * RETURNS
 *
 * 		S_OK on success.
 */
HRESULT WINAPI DispGetIDsOfNames(
	ITypeInfo  *ptinfo,    /* [in] */
	OLECHAR   **rgszNames, /* [in] */
	UINT        cNames,    /* [in] */
	DISPID     *rgdispid)  /* [out] */
{
    HRESULT hr = E_FAIL;

    hr = ICOM_CALL3(GetIDsOfNames,
                    ptinfo,
                    rgszNames,
                    cNames,
                    rgdispid);
    return (hr);
}

/******************************************************************************
 *		DispGetParam (OLEAUT32.28)
 *
 * Retrive a parameter from a DISPPARAMS structures and coerce it to
 * specified variant type
 *
 * NOTES
 * 		Coercion is done using system (0) locale.
 *
 * RETURNS
 *
 * 		S_OK on success.
 */
HRESULT WINAPI DispGetParam(
	DISPPARAMS *pdispparams, /* [in] */
	UINT        position,    /* [in] */
	VARTYPE     vtTarg,      /* [in] */
	VARIANT    *pvarResult,  /* [out] */
	UINT       *puArgErr)    /* [out] */
{
    HRESULT hr = E_FAIL;

    /**
     * TODO : Call VariantChangeTypeEx with LCID 0 (system)
     */

    FIXME("Coercion of arguments not implemented\n");
    return (hr);
}