55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
package main
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import (
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"context"
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"fmt"
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"github.com/chzyer/readline"
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"log"
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"ucl.lmika.dev/repl"
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"ucl.lmika.dev/ucl"
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"ucl.lmika.dev/ucl/builtins"
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)
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func main() {
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rl, err := readline.New("> ")
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if err != nil {
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panic(err)
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}
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defer rl.Close()
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instRepl := repl.New(
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ucl.WithModule(builtins.OS()),
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ucl.WithModule(builtins.FS(nil)),
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ucl.WithModule(builtins.Log(nil)),
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ucl.WithModule(builtins.Strs()),
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)
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ctx := context.Background()
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instRepl.SetCommand("hello", func(ctx context.Context, args ucl.CallArgs) (any, error) {
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fmt.Println("hello")
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return nil, nil
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}, repl.Doc{
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Brief: "displays hello",
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Detailed: `
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This displays the message 'hello' to the terminal.
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It then terminates.
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`,
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})
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instRepl.SetCommand("new-fancy", newFancy, newFancyDoc)
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instRepl.SetCommand("many-fancies", manyFancies)
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repl.AddTypePrinter(instRepl, displayFancy)
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repl.AddTypePrinter(instRepl, displayFancies)
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for {
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line, err := rl.Readline()
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if err != nil { // io.EOF
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break
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}
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if err := instRepl.EvalAndDisplay(ctx, line); err != nil {
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log.Printf("%T: %v", err, err)
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}
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}
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}
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