reovim_kernel/core/option/
scope.rs

1//! Option scope types.
2//!
3//! Defines where an option applies (global, buffer, window).
4
5use std::fmt;
6
7use crate::mm::{BufferId, WindowId};
8
9/// Scope where an option applies.
10///
11/// Determines the granularity of option storage:
12/// - `Global`: Single value for the entire editor
13/// - `Buffer`: Per-buffer values (e.g., `tabwidth`)
14/// - `Window`: Per-window values (e.g., `number`)
15///
16/// Window-scoped options can also have buffer-local defaults.
17#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
18pub enum OptionScope {
19    /// Applies globally to the entire editor.
20    #[default]
21    Global,
22
23    /// Per-buffer setting (e.g., `filetype`, `tabwidth`, `expandtab`).
24    Buffer,
25
26    /// Per-window setting (e.g., `number`, `relativenumber`, `wrap`).
27    Window,
28}
29
30impl OptionScope {
31    /// Get display name for this scope.
32    #[must_use]
33    pub const fn display_name(self) -> &'static str {
34        match self {
35            Self::Global => "global",
36            Self::Buffer => "buffer",
37            Self::Window => "window",
38        }
39    }
40}
41
42impl fmt::Display for OptionScope {
43    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
44        write!(f, "{}", self.display_name())
45    }
46}
47
48/// Runtime scope identifier for option access.
49///
50/// Used when getting or setting option values to specify the exact
51/// scope context (which buffer, which window, or global).
52#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
53pub enum OptionScopeId {
54    /// Global scope (no buffer/window context).
55    #[default]
56    Global,
57    /// Buffer-local scope with specific buffer ID.
58    Buffer(BufferId),
59    /// Window-local scope with specific window ID.
60    Window(WindowId),
61}
62
63impl fmt::Display for OptionScopeId {
64    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
65        match self {
66            Self::Global => write!(f, "global"),
67            Self::Buffer(id) => write!(f, "buffer({id:?})"),
68            Self::Window(id) => write!(f, "window({id:?})"),
69        }
70    }
71}
reovim_kernel/core/option/scope.rs

reovim_kernel/core/option/
scope.rs
