/
Routine.go
67 lines (54 loc) · 1.18 KB
/
Routine.go
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package netroutine
import (
"encoding/json"
"errors"
"reflect"
)
type Routine struct {
blocks []Runnable
}
func RoutineFromBytes(raw []byte) (*Routine, error) {
var toBuild []struct {
Kind string
Data []byte
}
var builtBlocks []Runnable
if err := json.Unmarshal(raw, &toBuild); err != nil {
return nil, err
}
for _, b := range toBuild {
foundType, ok := blocks[b.Kind]
if !ok {
return nil, errors.New("unknown block type:" + b.Kind)
}
block, ok := reflect.New(reflect.TypeOf(foundType)).Interface().(Runnable)
if !ok {
return nil, errors.New("block does not conform to the Runnable interface")
}
if err := block.fromBytes(b.Data); err != nil {
return nil, err
}
builtBlocks = append(builtBlocks, block)
}
return &Routine{blocks: builtBlocks}, nil
}
func (r *Routine) ToBytes() ([]byte, error) {
var blocks []struct {
Kind string
Data []byte
}
for _, b := range r.blocks {
data, err := b.toBytes()
if err != nil {
return nil, err
}
blocks = append(blocks, struct {
Kind string
Data []byte
}{Kind: b.kind(), Data: data})
}
return json.Marshal(blocks)
}
func NewRoutine(b ...Runnable) *Routine {
return &Routine{blocks: b}
}