33 lines
754 B
Go
33 lines
754 B
Go
package binary
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import (
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"bytes"
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"fmt"
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"github.com/tetratelabs/wazero/internal/leb128"
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"github.com/tetratelabs/wazero/internal/wasm"
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)
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func decodeExport(r *bytes.Reader, ret *wasm.Export) (err error) {
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if ret.Name, _, err = decodeUTF8(r, "export name"); err != nil {
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return
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}
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b, err := r.ReadByte()
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if err != nil {
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err = fmt.Errorf("error decoding export kind: %w", err)
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return
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}
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ret.Type = b
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switch ret.Type {
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case wasm.ExternTypeFunc, wasm.ExternTypeTable, wasm.ExternTypeMemory, wasm.ExternTypeGlobal:
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if ret.Index, _, err = leb128.DecodeUint32(r); err != nil {
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err = fmt.Errorf("error decoding export index: %w", err)
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}
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default:
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err = fmt.Errorf("%w: invalid byte for exportdesc: %#x", ErrInvalidByte, b)
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}
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return
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}
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