Hilbish/util/util.go

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package util
import "github.com/yuin/gopher-lua"
// Document adds a documentation string to a module.
// It is accessible via the __doc metatable.
func Document(L *lua.LState, module lua.LValue, doc string) {
mt := L.GetMetatable(module)
if mt == lua.LNil {
mt = L.NewTable()
L.SetMetatable(module, mt)
}
L.SetField(mt, "__doc", lua.LString(doc))
}
// SetField sets a field in a table, adding docs for it.
// It is accessible via the __docProp metatable. It is a table of the names of the fields.
func SetField(L *lua.LState, module lua.LValue, field string, value lua.LValue, doc string) {
mt := L.GetMetatable(module)
if mt == lua.LNil {
mt = L.NewTable()
docProp := L.NewTable()
L.SetField(mt, "__docProp", docProp)
L.SetMetatable(module, mt)
}
docProp := L.GetTable(mt, lua.LString("__docProp"))
L.SetField(docProp, field, lua.LString(doc))
L.SetField(module, field, value)
}