44 lines
739 B
Go
44 lines
739 B
Go
package golang
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import (
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"strings"
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"sync"
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"github.com/traefik/yaegi/interp"
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"github.com/traefik/yaegi/stdlib"
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)
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var (
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mu sync.Mutex
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registry = make(map[string]*interp.Interpreter)
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)
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// RegisteredVM returns a JS VM. If name is not empty, it will return a shared instance.
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func RegisteredVM(name, init string) (*interp.Interpreter, error) {
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mu.Lock()
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defer mu.Unlock()
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name = strings.ToLower(name)
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vm, ok := registry[name]
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// create new VM
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if !ok {
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vm = interp.New(interp.Options{})
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if err := vm.Use(stdlib.Symbols); err != nil {
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return nil, err
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}
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if init != "" {
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if _, err := vm.Eval(init); err != nil {
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return nil, err
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}
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}
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if name != "" {
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registry[name] = vm
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}
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}
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return vm, nil
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}
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