Hilbish/rl_notmidnight.go

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//go:build !midnight
package main
import (
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"hilbish/util"
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rt "github.com/arnodel/golua/runtime"
"github.com/maxlandon/readline"
)
func setupTabCompleter(rl *readline.Instance) {
rl.TabCompleter = func(line []rune, pos int, _ readline.DelayedTabContext) (string, []*readline.CompletionGroup) {
term := rt.NewTerminationWith(l.UnderlyingRuntime().MainThread().CurrentCont(), 2, false)
compHandle := hshMod.Get(rt.StringValue("completion")).AsTable().Get(rt.StringValue("handler"))
err := rt.Call(l.UnderlyingRuntime().MainThread(), compHandle, []rt.Value{rt.StringValue(string(line)),
rt.IntValue(int64(pos))}, term)
var compGroups []*readline.CompletionGroup
if err != nil {
return "", compGroups
}
luaCompGroups := term.Get(0)
luaPrefix := term.Get(1)
if luaCompGroups.Type() != rt.TableType {
return "", compGroups
}
groups := luaCompGroups.AsTable()
// prefix is optional
pfx, _ := luaPrefix.TryString()
util.ForEach(groups, func(key rt.Value, val rt.Value) {
if key.Type() != rt.IntType || val.Type() != rt.TableType {
return
}
valTbl := val.AsTable()
luaCompType := valTbl.Get(rt.StringValue("type"))
luaCompItems := valTbl.Get(rt.StringValue("items"))
if luaCompType.Type() != rt.StringType || luaCompItems.Type() != rt.TableType {
return
}
items := []string{}
itemDescriptions := make(map[string]string)
util.ForEach(luaCompItems.AsTable(), func(lkey rt.Value, lval rt.Value) {
if keytyp := lkey.Type(); keytyp == rt.StringType {
// ['--flag'] = {'description', '--flag-alias'}
itemName, ok := lkey.TryString()
vlTbl, okk := lval.TryTable()
if !ok && !okk {
// TODO: error
return
}
items = append(items, itemName)
itemDescription, ok := vlTbl.Get(rt.IntValue(1)).TryString()
if !ok {
// TODO: error
return
}
itemDescriptions[itemName] = itemDescription
} else if keytyp == rt.IntType {
vlStr, ok := lval.TryString()
if !ok {
// TODO: error
return
}
items = append(items, vlStr)
} else {
// TODO: error
return
}
})
var dispType readline.TabDisplayType
switch luaCompType.AsString() {
case "grid": dispType = readline.TabDisplayGrid
case "list": dispType = readline.TabDisplayList
// need special cases, will implement later
//case "map": dispType = readline.TabDisplayMap
}
compGroups = append(compGroups, &readline.CompletionGroup{
DisplayType: dispType,
Descriptions: itemDescriptions,
Suggestions: items,
TrimSlash: false,
NoSpace: true,
})
})
return pfx, compGroups
}
}