33 lines
539 B
Go
33 lines
539 B
Go
package cmdlang
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import (
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"errors"
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)
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type evalCtx struct {
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parent *evalCtx
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commands map[string]invokable
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}
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func (ec *evalCtx) addCmd(name string, inv invokable) {
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if ec.commands == nil {
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ec.commands = make(map[string]invokable)
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}
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ec.commands[name] = inv
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}
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func (ec *evalCtx) lookupCmd(name string) (invokable, error) {
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for e := ec; e != nil; e = e.parent {
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if ec.commands == nil {
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continue
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}
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if cmd, ok := ec.commands[name]; ok {
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return cmd, nil
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}
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}
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return nil, errors.New("name " + name + " not found")
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}
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