コード例 #1
0
ファイル: arg_completer.go プロジェクト: yonglehou/elvish
func (fac FnAsArgCompleter) Complete(words []string, ed *Editor) ([]*candidate, error) {
	in, err := makeClosedStdin()
	if err != nil {
		return nil, err
	}
	ports := []*eval.Port{in, &eval.Port{File: os.Stdout}, &eval.Port{File: os.Stderr}}

	wordValues := make([]eval.Value, len(words))
	for i, word := range words {
		wordValues[i] = eval.String(word)
	}

	// XXX There is no source to pass to NewTopEvalCtx.
	ec := eval.NewTopEvalCtx(ed.evaler, "[editor completer]", "", ports)
	values, err := ec.PCaptureOutput(fac.Fn, wordValues)
	if err != nil {
		ed.notify("completer error: %v", err)
		return nil, err
	}

	cands := make([]*candidate, len(values))
	for i, v := range values {
		s := eval.ToString(v)
		cands[i] = &candidate{text: s}
	}
	return cands, nil
}
コード例 #2
0
ファイル: history-value.go プロジェクト: zhsj/elvish
func (hv History) IndexOne(idx eval.Value) eval.Value {
	hv.mutex.RLock()
	defer hv.mutex.RUnlock()

	slice, i, j := eval.ParseAndFixListIndex(eval.ToString(idx), hv.Len())
	if slice {
		cmds, err := hv.st.Cmds(i+1, j+1)
		maybeThrow(err)
		vs := make([]eval.Value, len(cmds))
		for i := range cmds {
			vs[i] = eval.String(cmds[i])
		}
		return eval.NewList(vs...)
	}
	s, err := hv.st.Cmd(i + 1)
	maybeThrow(err)
	return eval.String(s)
}
コード例 #3
0
ファイル: call.go プロジェクト: zhsj/elvish
// callFnAsPrompt calls a Fn with closed input, captures its output and convert
// the output to a slice of *styled's.
func callFnForPrompt(ed *Editor, fn eval.Fn) []*styled {
	ports := []*eval.Port{eval.DevNullClosedChan, &eval.Port{File: os.Stdout}, &eval.Port{File: os.Stderr}}

	// XXX There is no source to pass to NewTopEvalCtx.
	ec := eval.NewTopEvalCtx(ed.evaler, "[editor prompt]", "", ports)
	values, err := ec.PCaptureOutput(fn, nil, eval.NoOpts)
	if err != nil {
		ed.Notify("prompt function error: %v", err)
		return nil
	}

	var ss []*styled
	for _, v := range values {
		if s, ok := v.(*styled); ok {
			ss = append(ss, s)
		} else {
			ss = append(ss, &styled{eval.ToString(v), ""})
		}
	}
	return ss
}