mirror of
https://github.com/go-sylixos/elvish.git
synced 2024-12-13 18:07:51 +08:00
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package edit
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import (
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"src.elv.sh/pkg/cli"
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"src.elv.sh/pkg/cli/mode"
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"src.elv.sh/pkg/cli/tk"
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"src.elv.sh/pkg/eval"
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"src.elv.sh/pkg/parse"
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)
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//elvdoc:var -instant:binding
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//
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// Binding for the instant mode.
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//elvdoc:fn -instant:start
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//
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// Starts the instant mode. In instant mode, any text entered at the command
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// line is evaluated immediately, with the output displayed.
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//
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// **WARNING**: Beware of unintended consequences when using destructive
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// commands. For example, if you type `sudo rm -rf /tmp/*` in the instant mode,
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// Elvish will attempt to evaluate `sudo rm -rf /` when you typed that far.
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func initInstant(ed *Editor, ev *eval.Evaler, nb eval.NsBuilder) {
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bindingVar := newBindingVar(emptyBindingsMap)
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bindings := newMapBindings(ed, ev, bindingVar)
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nb.AddNs("-instant",
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eval.NsBuilder{
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"binding": bindingVar,
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}.AddGoFns("<edit:-instant>:", map[string]interface{}{
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"start": func() { instantStart(ed.app, ev, bindings) },
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}).Ns())
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}
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func instantStart(app cli.App, ev *eval.Evaler, bindings tk.Bindings) {
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execute := func(code string) ([]string, error) {
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outPort, collect, err := eval.StringCapturePort()
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if err != nil {
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return nil, err
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}
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err = ev.Eval(
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parse.Source{Name: "[instant]", Code: code},
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eval.EvalCfg{
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Ports: []*eval.Port{nil, outPort},
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Interrupt: eval.ListenInterrupts})
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return collect(), err
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}
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w, err := mode.NewInstant(app,
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mode.InstantSpec{Bindings: bindings, Execute: execute})
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if w != nil {
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app.SetAddon(w, false)
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app.Redraw()
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}
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if err != nil {
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app.Notify(err.Error())
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}
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}
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