1package binary
 2
 3import (
 4	"bytes"
 5	"fmt"
 6
 7	"github.com/tetratelabs/wazero/internal/leb128"
 8	"github.com/tetratelabs/wazero/internal/wasm"
 9)
10
11func decodeExport(r *bytes.Reader, ret *wasm.Export) (err error) {
12	if ret.Name, _, err = decodeUTF8(r, "export name"); err != nil {
13		return
14	}
15
16	b, err := r.ReadByte()
17	if err != nil {
18		err = fmt.Errorf("error decoding export kind: %w", err)
19		return
20	}
21
22	ret.Type = b
23	switch ret.Type {
24	case wasm.ExternTypeFunc, wasm.ExternTypeTable, wasm.ExternTypeMemory, wasm.ExternTypeGlobal:
25		if ret.Index, _, err = leb128.DecodeUint32(r); err != nil {
26			err = fmt.Errorf("error decoding export index: %w", err)
27		}
28	default:
29		err = fmt.Errorf("%w: invalid byte for exportdesc: %#x", ErrInvalidByte, b)
30	}
31	return
32}