gui: add EguiBox TypeBox plugin (Windows egui stub)\n\n- plugins: add nyash-egui-plugin with TypeBox (resolve/invoke_id), Windows path for real window via eframe; stub on other OS\n- apps: add apps/egui-hello sample (open→uiLabel→run→close)\n- loader: improve Windows DLL resolution (target triples: x86_64/aarch64 msvc) and lib→dll mapping\n- tests: expand TypeBox vs TLV diff tests up to FileBox; all green\n- docs: update CURRENT_TASK checklist (diff tests completed)\n- config: nyash.toml add EguiBox (type_id=70), plugin registry and methods
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Moe Charm
242
plugins/nyash-egui-plugin/src/lib.rs
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242
plugins/nyash-egui-plugin/src/lib.rs
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//! Nyash EguiBox Plugin (TypeBox ABI skeleton)
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//! - Provides a minimal window/UI placeholder via Nyash ABI
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//! - Windows GUI integration (egui/eframe) can be enabled later via `with-egui` feature
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use once_cell::sync::Lazy;
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use std::{collections::HashMap, sync::{Mutex, atomic::{AtomicU32, Ordering}}};
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// ===== Error/Status codes (BID-FFI v1 aligned) =====
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const OK: i32 = 0;
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const E_SHORT: i32 = -1;
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const E_TYPE: i32 = -2;
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const E_METHOD: i32 = -3;
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const E_ARGS: i32 = -4;
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const E_FAIL: i32 = -5;
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// ===== IDs =====
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const TID_EGUI: u32 = 70; // match nyash.toml [box_types]
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// methods
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const M_BIRTH: u32 = 0;
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const M_OPEN: u32 = 1; // open(width:int, height:int, title:str)
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const M_UI_LABEL: u32 = 2; // uiLabel(text:str)
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const M_UI_BUTTON: u32 = 3; // uiButton(text:str) -> future: events
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const M_POLL_EVENT: u32 = 4; // pollEvent() -> Result.Ok(text) / Result.Err("none")
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const M_RUN: u32 = 5; // run() -> enters loop or no-op
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const M_CLOSE: u32 = 6; // close()
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const M_FINI: u32 = u32::MAX;
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#[derive(Default)]
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struct EguiInstance {
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width: i32,
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height: i32,
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title: String,
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labels: Vec<String>,
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}
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static INST: Lazy<Mutex<HashMap<u32, EguiInstance>>> = Lazy::new(|| Mutex::new(HashMap::new()));
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static NEXT_ID: AtomicU32 = AtomicU32::new(1);
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// ===== TypeBox ABI (resolve/invoke_id) =====
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#[repr(C)]
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pub struct NyashTypeBoxFfi {
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pub abi_tag: u32,
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pub version: u16,
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pub struct_size: u16,
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pub name: *const std::os::raw::c_char,
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pub resolve: Option<extern "C" fn(*const std::os::raw::c_char) -> u32>,
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pub invoke_id: Option<extern "C" fn(u32, u32, *const u8, usize, *mut u8, *mut usize) -> i32>,
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pub capabilities: u64,
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}
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// This simple POD struct contains raw pointers; mark as Sync for static export
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unsafe impl Sync for NyashTypeBoxFfi {}
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const ABI_TAG: u32 = 0x58594254; // 'T''Y''B''X' little-endian (TYBX)
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extern "C" fn tb_resolve(name: *const std::os::raw::c_char) -> u32 {
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unsafe {
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if name.is_null() { return 0; }
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let s = std::ffi::CStr::from_ptr(name).to_string_lossy();
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match s.as_ref() {
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"birth" => M_BIRTH,
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"open" => M_OPEN,
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"uiLabel" => M_UI_LABEL,
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"uiButton" => M_UI_BUTTON,
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"pollEvent" => M_POLL_EVENT,
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"run" => M_RUN,
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"close" => M_CLOSE,
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"fini" => M_FINI,
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_ => 0,
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}
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}
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}
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extern "C" fn tb_invoke_id(_method_id: u32, instance_id: u32, args: *const u8, args_len: usize, result: *mut u8, result_len: *mut usize) -> i32 {
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nyash_plugin_invoke(TID_EGUI, _method_id, instance_id, args, args_len, result, result_len)
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}
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static TYPE_NAME: &[u8] = b"EguiBox\0";
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#[no_mangle]
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pub static nyash_typebox_EguiBox: NyashTypeBoxFfi = NyashTypeBoxFfi {
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abi_tag: ABI_TAG,
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version: 1,
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struct_size: std::mem::size_of::<NyashTypeBoxFfi>() as u16,
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name: TYPE_NAME.as_ptr() as *const _,
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resolve: Some(tb_resolve),
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invoke_id: Some(tb_invoke_id),
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capabilities: 0,
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};
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// ===== Plugin entry points =====
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#[no_mangle]
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pub extern "C" fn nyash_plugin_abi() -> u32 { 1 }
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#[no_mangle]
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pub extern "C" fn nyash_plugin_init() -> i32 { OK }
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#[no_mangle]
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pub extern "C" fn nyash_plugin_invoke(
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type_id: u32,
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method_id: u32,
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instance_id: u32,
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args: *const u8,
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args_len: usize,
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result: *mut u8,
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result_len: *mut usize,
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) -> i32 {
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if type_id != TID_EGUI { return E_TYPE; }
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unsafe {
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match method_id {
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M_BIRTH => {
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let need = 4; // instance_id (u32 LE)
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if result_len.is_null() { return E_ARGS; }
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if result.is_null() || *result_len < need { *result_len = need; return E_SHORT; }
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let id = NEXT_ID.fetch_add(1, Ordering::Relaxed);
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if let Ok(mut m) = INST.lock() { m.insert(id, EguiInstance::default()); } else { return E_FAIL; }
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let b = id.to_le_bytes(); std::ptr::copy_nonoverlapping(b.as_ptr(), result, 4); *result_len = 4; OK
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}
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M_FINI => { if let Ok(mut m) = INST.lock() { m.remove(&instance_id); OK } else { E_FAIL } }
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M_OPEN => {
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let (w, h, title) = match tlv_read_open_args(args, args_len) { Some(v) => v, None => return E_ARGS };
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if let Ok(mut m) = INST.lock() { if let Some(inst) = m.get_mut(&instance_id) { inst.width=w; inst.height=h; inst.title=title; } else { return E_FAIL; } } else { return E_FAIL; }
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write_tlv_void(result, result_len)
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}
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M_UI_LABEL => {
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let text = match tlv_read_string(args, args_len, 0) { Some(s) => s, None => return E_ARGS };
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if let Ok(mut m) = INST.lock() { if let Some(inst) = m.get_mut(&instance_id) { inst.labels.push(text); } else { return E_FAIL; } } else { return E_FAIL; }
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write_tlv_void(result, result_len)
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}
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M_UI_BUTTON => {
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// For now: stub, accept and return Void
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if tlv_read_string(args, args_len, 0).is_none() { return E_ARGS; }
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write_tlv_void(result, result_len)
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}
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M_POLL_EVENT => {
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// Stub: no events yet → return empty string "" (Ok)
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write_tlv_string("", result, result_len)
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}
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M_RUN => {
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// Windows + with-egui: 実ウィンドウを表示
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#[cfg(all(windows, feature = "with-egui"))]
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{
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if let Ok(m) = INST.lock() {
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if let Some(inst) = m.get(&instance_id) {
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winrun::run_window(inst.width, inst.height, &inst.title, inst.labels.clone());
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}
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}
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}
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// それ以外はスタブ
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write_tlv_void(result, result_len)
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}
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M_CLOSE => {
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// Stub: no-op close
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write_tlv_void(result, result_len)
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}
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_ => E_METHOD,
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}
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}
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}
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// ===== TLV helpers (version=1) =====
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fn write_tlv_result(payloads: &[(u8, &[u8])], result: *mut u8, result_len: *mut usize) -> i32 {
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if result_len.is_null() { return E_ARGS; }
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let mut buf: Vec<u8> = Vec::with_capacity(4 + payloads.iter().map(|(_,p)| 4 + p.len()).sum::<usize>());
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buf.extend_from_slice(&1u16.to_le_bytes());
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buf.extend_from_slice(&(payloads.len() as u16).to_le_bytes());
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for (tag, payload) in payloads {
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buf.push(*tag); buf.push(0); buf.extend_from_slice(&(payload.len() as u16).to_le_bytes()); buf.extend_from_slice(payload);
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}
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unsafe {
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let need = buf.len();
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if result.is_null() || *result_len < need { *result_len = need; return E_SHORT; }
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std::ptr::copy_nonoverlapping(buf.as_ptr(), result, need);
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*result_len = need;
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}
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OK
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}
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fn write_tlv_void(result: *mut u8, result_len: *mut usize) -> i32 { write_tlv_result(&[(9u8, &[])], result, result_len) }
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fn write_tlv_string(s: &str, result: *mut u8, result_len: *mut usize) -> i32 { write_tlv_result(&[(6u8, s.as_bytes())], result, result_len) }
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unsafe fn tlv_parse_header(data: *const u8, len: usize) -> Option<(u16,u16,usize)> {
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if data.is_null() || len < 4 { return None; }
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let b = std::slice::from_raw_parts(data, len);
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let ver = u16::from_le_bytes([b[0], b[1]]);
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let argc = u16::from_le_bytes([b[2], b[3]]);
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if ver != 1 { return None; }
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Some((ver, argc, 4))
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}
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unsafe fn tlv_read_entry_at(data: *const u8, len: usize, mut pos: usize) -> Option<(u8, usize, usize)> {
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let b = std::slice::from_raw_parts(data, len);
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if pos + 4 > len { return None; }
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let tag = b[pos]; let _ = b[pos+1]; let size = u16::from_le_bytes([b[pos+2], b[pos+3]]) as usize; pos += 4;
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if pos + size > len { return None; }
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Some((tag, size, pos))
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}
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unsafe fn tlv_read_i64(data: *const u8, len: usize, index: usize) -> Option<i64> {
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let (_, argc, mut pos) = tlv_parse_header(data, len)?; if argc < (index as u16 + 1) { return None; }
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for i in 0..=index { let (tag, size, p) = tlv_read_entry_at(data, len, pos)?; if tag == 3 && size == 8 { if i == index { let b = std::slice::from_raw_parts(data.add(p), 8); let mut t=[0u8;8]; t.copy_from_slice(b); return Some(i64::from_le_bytes(t)); } } pos = p + size; }
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None
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}
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unsafe fn tlv_read_string(data: *const u8, len: usize, index: usize) -> Option<String> {
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let (_, argc, mut pos) = tlv_parse_header(data, len)?; if argc < (index as u16 + 1) { return None; }
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for i in 0..=index { let (tag, size, p) = tlv_read_entry_at(data, len, pos)?; if tag == 6 || tag == 7 { if i == index { let s = std::slice::from_raw_parts(data.add(p), size); return Some(String::from_utf8_lossy(s).to_string()); } } pos = p + size; }
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None
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}
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unsafe fn tlv_read_open_args(args: *const u8, len: usize) -> Option<(i32,i32,String)> {
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let w = tlv_read_i64(args, len, 0)? as i32;
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let h = tlv_read_i64(args, len, 1)? as i32;
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let t = tlv_read_string(args, len, 2)?;
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Some((w,h,t))
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}
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// ===== Windows 実行（with-egui） =====
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#[cfg(all(windows, feature = "with-egui"))]
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mod winrun {
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use super::*;
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use eframe::egui;
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pub fn run_window(w: i32, h: i32, title: &str, labels: Vec<String>) {
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let options = eframe::NativeOptions {
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viewport: egui::ViewportBuilder::default()
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.with_inner_size([w.max(100) as f32, h.max(100) as f32])
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.with_title(title.to_string()),
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..Default::default()
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};
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struct App { labels: Vec<String> }
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impl eframe::App for App {
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fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
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egui::CentralPanel::default().show(ctx, |ui| {
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for s in &self.labels { ui.label(s); }
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});
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}
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}
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let _ = eframe::run_native(
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title,
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options,
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Box::new(|_cc| Box::new(App { labels })),
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);
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}
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}
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