/*
 * Copyright 2011 Jacek Caban for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <assert.h>

#include "vbscript.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(vbscript);


typedef struct {
    vbscode_t *code;
    instr_t *instr;
} exec_ctx_t;


typedef HRESULT (*instr_func_t)(exec_ctx_t*);

static HRESULT interp_icallv(exec_ctx_t *ctx)
{
    FIXME("\n");
    return E_NOTIMPL;
}

static HRESULT interp_ret(exec_ctx_t *ctx)
{
    TRACE("\n");

    ctx->instr = NULL;
    return S_OK;
}

static const instr_func_t op_funcs[] = {
#define X(x,n,a,b) interp_ ## x,
OP_LIST
#undef X
};

static const unsigned op_move[] = {
#define X(x,n,a,b) n,
OP_LIST
#undef X
};

HRESULT exec_script(script_ctx_t *ctx, function_t *func)
{
    exec_ctx_t exec;
    vbsop_t op;
    HRESULT hres = S_OK;

    exec.code = func->code_ctx;
    exec.instr = exec.code->instrs + func->code_off;

    while(exec.instr) {
        op = exec.instr->op;
        hres = op_funcs[op](&exec);
        if(FAILED(hres)) {
            FIXME("Failed %08x\n", hres);
            break;
        }

        exec.instr += op_move[op];
    }

    return hres;
}