func()

in resolve/resolve.go [396:438]

• 36 lines of code
• 11 McCabe index (conditional complexity)

func (r *resolver) useToplevel(use use) (bind *Binding) {
	id := use.id

	if prev, ok := r.file.bindings[id.Name]; ok {
		// use of load-defined name in file block
		bind = prev
	} else if prev, ok := r.globals[id.Name]; ok {
		// use of global declared by module
		bind = prev
	} else if r.isGlobal != nil && r.isGlobal(id.Name) {
		// use of global defined in a previous REPL chunk
		bind = &Binding{
			First: id, // wrong: this is not even a binding use
			Scope: Global,
			Index: len(r.moduleGlobals),
		}
		r.globals[id.Name] = bind
		r.moduleGlobals = append(r.moduleGlobals, bind)
	} else if prev, ok := r.predeclared[id.Name]; ok {
		// repeated use of predeclared or universal
		bind = prev
	} else if r.isPredeclared(id.Name) {
		// use of pre-declared name
		bind = &Binding{Scope: Predeclared}
		r.predeclared[id.Name] = bind // save it
	} else if r.isUniversal(id.Name) {
		// use of universal name
		if !AllowSet && id.Name == "set" {
			r.errorf(id.NamePos, doesnt+"support sets")
		}
		bind = &Binding{Scope: Universal}
		r.predeclared[id.Name] = bind // save it
	} else {
		bind = &Binding{Scope: Undefined}
		var hint string
		if n := r.spellcheck(use); n != "" {
			hint = fmt.Sprintf(" (did you mean %s?)", n)
		}
		r.errorf(id.NamePos, "undefined: %s%s", id.Name, hint)
	}
	id.Binding = bind
	return bind
}