1/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements.  See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership.  The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License.  You may obtain a copy of the License at
9 *
10 *   http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied.  See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20/*!
21 * \brief Sample golang application to demonstrate function conversion to packed function.
22 * \file pack_func_convert.go
23 */
24
25package main
26
27import (
28    "fmt"
29    "./gotvm"
30)
31
32// sampleCb is a simple golang callback function like C = A + B.
33func sampleCb(args ...*gotvm.Value) (retVal interface{}, err error) {
34    for _, v := range args {
35        fmt.Printf("ARGS:%T : %v\n", v.AsInt64(), v.AsInt64())
36    }
37    val1 := args[0].AsInt64()
38    val2 := args[1].AsInt64()
39    retVal = int64(val1+val2)
40    return
41}
42
43// main
44func main() {
45    // Welcome
46
47    // Simple convert to a packed function
48    fhandle, err := gotvm.ConvertFunction(sampleCb)
49    if err != nil {
50        fmt.Print(err)
51        return
52    }
53    fmt.Printf("Converted function\n")
54
55    retVal, err := fhandle.Invoke(10, 20)
56    fmt.Printf("Invoke Completed\n")
57    if err != nil {
58        fmt.Print(err)
59        return
60    }
61    fmt.Printf("Result:%v\n", retVal.AsInt64())
62}
63