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9b81d4d3ab
Preparation to make decoder use less memory and API more type safe. Now each scalar type has it's own struct type so it can store different things and enables to have a scalar interface. Also own types will enable experimenting with decode DLS designs like using chained methods that are type aware.
27 lines
719 B
Go
27 lines
719 B
Go
package decoders
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import (
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"errors"
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"github.com/wader/fq/pkg/scalar"
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"github.com/wader/fq/format/avro/schema"
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"github.com/wader/fq/pkg/decode"
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)
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func decodeFixedFn(schema schema.SimplifiedSchema, sms ...scalar.BitBufMapper) (DecodeFn, error) {
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if schema.Size < 0 {
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return nil, errors.New("fixed size must be greater than or equal to zero")
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}
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size := int64(schema.Size)
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// Fixed instances are encoded using the number of bytes declared in the schema.
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return func(name string, d *decode.D) any {
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r := d.FieldRawLen(name, size*8, sms...)
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val := make([]byte, size)
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if _, err := r.ReadBits(val, size*8); err != nil {
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d.Fatalf("failed to read fixed %s value: %v", name, err)
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}
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return val
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}, nil
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}
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