| 1 | use std::path::{Path, PathBuf}; |
| 2 | use std::process::Command; |
| 3 | |
| 4 | use bench51_core::files::{self, Loaded}; |
| 5 | use bench51_core::session::{MemSpace, SPEEDS, Session}; |
| 6 | use ratatui::crossterm::event::{KeyCode, KeyEvent, KeyModifiers, MouseEvent, MouseEventKind}; |
| 7 | use ratatui_textarea::{CursorMove, TextArea}; |
| 8 | |
| 9 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 10 | pub enum Mode { |
| 11 | Edit, |
| 12 | Debug, |
| 13 | } |
| 14 | |
| 15 | /// Right-hand pane in edit mode. |
| 16 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 17 | pub enum OutTab { |
| 18 | Listing, |
| 19 | Hex, |
| 20 | Errors, |
| 21 | } |
| 22 | |
| 23 | /// Focusable panels in debug mode. |
| 24 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 25 | pub enum Focus { |
| 26 | Source, |
| 27 | Memory, |
| 28 | Ports, |
| 29 | Serial, |
| 30 | } |
| 31 | |
| 32 | pub type MemTab = MemSpace; |
| 33 | |
| 34 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| 35 | pub enum PromptKind { |
| 36 | Open, |
| 37 | SaveAs, |
| 38 | /// `addr value` poke into the memory shown in the memory panel. |
| 39 | Poke, |
| 40 | } |
| 41 | |
| 42 | pub struct Prompt { |
| 43 | pub kind: PromptKind, |
| 44 | pub input: String, |
| 45 | } |
| 46 | |
| 47 | pub struct App { |
| 48 | pub path: Option<PathBuf>, |
| 49 | pub editor: TextArea<'static>, |
| 50 | saved_text: String, |
| 51 | pub mode: Mode, |
| 52 | pub out_tab: OutTab, |
| 53 | pub focus: Focus, |
| 54 | pub mem_tab: MemTab, |
| 55 | pub mem_scroll: usize, |
| 56 | /// Simulator, build, breakpoints and run state. |
| 57 | pub session: Session, |
| 58 | /// Selected line in the debug source view. |
| 59 | pub src_cursor: usize, |
| 60 | pub src_scroll: usize, |
| 61 | pub out_scroll: usize, |
| 62 | pub port_sel: (usize, u8), |
| 63 | pub serial_input: String, |
| 64 | pub show_help: bool, |
| 65 | pub prompt: Option<Prompt>, |
| 66 | pub quit: bool, |
| 67 | quit_armed: bool, |
| 68 | /// Set by Ctrl-G; the event loop suspends the TUI and calls |
| 69 | /// `edit_externally`. |
| 70 | pub external_edit: bool, |
| 71 | } |
| 72 | |
| 73 | impl App { |
| 74 | pub fn new(path: Option<PathBuf>, clock_mhz: f64) -> Self { |
| 75 | let mut app = Self { |
| 76 | path: None, |
| 77 | editor: TextArea::default(), |
| 78 | saved_text: String::new(), |
| 79 | mode: Mode::Edit, |
| 80 | out_tab: OutTab::Listing, |
| 81 | focus: Focus::Source, |
| 82 | mem_tab: MemTab::Iram, |
| 83 | mem_scroll: 0, |
| 84 | session: Session::new(clock_mhz), |
| 85 | src_cursor: 0, |
| 86 | src_scroll: 0, |
| 87 | out_scroll: 0, |
| 88 | port_sel: (1, 0), |
| 89 | serial_input: String::new(), |
| 90 | show_help: false, |
| 91 | prompt: None, |
| 92 | quit: false, |
| 93 | quit_armed: false, |
| 94 | external_edit: false, |
| 95 | }; |
| 96 | app.session.status = "F1 help · F7 assemble · F5 run · F11 step".into(); |
| 97 | match path { |
| 98 | Some(p) => app.open(&p), |
| 99 | None => app.set_text(TEMPLATE), |
| 100 | } |
| 101 | app |
| 102 | } |
| 103 | |
| 104 | fn set_text(&mut self, text: &str) { |
| 105 | let lines: Vec<String> = text.lines().map(String::from).collect(); |
| 106 | self.editor = TextArea::new(if lines.is_empty() { |
| 107 | vec![String::new()] |
| 108 | } else { |
| 109 | lines |
| 110 | }); |
| 111 | crate::ui::draw::style_editor(&mut self.editor); |
| 112 | self.saved_text = self.text(); |
| 113 | self.session.clear(); |
| 114 | self.focus = Focus::Source; |
| 115 | self.serial_input.clear(); |
| 116 | } |
| 117 | |
| 118 | pub fn text(&self) -> String { |
| 119 | self.editor.lines().join("\n") |
| 120 | } |
| 121 | |
| 122 | pub fn dirty(&self) -> bool { |
| 123 | self.text() != self.saved_text |
| 124 | } |
| 125 | |
| 126 | /// Source differs from what the simulator is running. |
| 127 | pub fn stale(&self) -> bool { |
| 128 | self.session |
| 129 | .is_stale(self.editor.lines().iter().map(String::as_str)) |
| 130 | } |
| 131 | |
| 132 | pub fn title(&self) -> String { |
| 133 | let name = self |
| 134 | .path |
| 135 | .as_ref() |
| 136 | .map_or("untitled.asm".to_string(), |p| p.display().to_string()); |
| 137 | format!("{name}{}", if self.dirty() { " [+]" } else { "" }) |
| 138 | } |
| 139 | |
| 140 | // ---- Files ---- |
| 141 | |
| 142 | fn open(&mut self, path: &Path) { |
| 143 | match files::load(path) { |
| 144 | Err(e) => self.session.status = e, |
| 145 | Ok(Loaded::Hex { source, bytes }) => { |
| 146 | self.set_text(&source); |
| 147 | self.saved_text.clear(); |
| 148 | self.path = None; |
| 149 | self.assemble(); |
| 150 | self.session.status = format!( |
| 151 | "loaded {} ({bytes} bytes) and disassembled it", |
| 152 | path.display() |
| 153 | ); |
| 154 | } |
| 155 | Ok(Loaded::Source(text)) => { |
| 156 | self.set_text(&text); |
| 157 | self.path = Some(path.to_path_buf()); |
| 158 | self.mode = Mode::Edit; |
| 159 | self.session.status = format!("opened {}", path.display()); |
| 160 | } |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | fn save(&mut self, path: Option<PathBuf>) { |
| 165 | let Some(path) = path.or_else(|| self.path.clone()) else { |
| 166 | self.prompt = Some(Prompt { |
| 167 | kind: PromptKind::SaveAs, |
| 168 | input: String::new(), |
| 169 | }); |
| 170 | return; |
| 171 | }; |
| 172 | let mut text = self.text(); |
| 173 | text.push('\n'); |
| 174 | match std::fs::write(&path, text) { |
| 175 | Ok(()) => { |
| 176 | self.saved_text = self.text(); |
| 177 | self.session.status = format!("saved {}", path.display()); |
| 178 | self.path = Some(path); |
| 179 | } |
| 180 | Err(e) => self.session.status = format!("cannot save {}: {e}", path.display()), |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | /// Opens the source in `$EDITOR` and loads the result back. The |
| 185 | /// caller must have suspended the TUI. A saved file is edited in place |
| 186 | /// (unsaved changes are saved first); an untitled buffer goes through |
| 187 | /// a temporary file. |
| 188 | pub fn edit_externally(&mut self) { |
| 189 | let (path, temp) = match self.path.clone() { |
| 190 | Some(p) => { |
| 191 | if self.dirty() { |
| 192 | self.save(None); |
| 193 | if self.dirty() { |
| 194 | return; // save failed; `save` set the status |
| 195 | } |
| 196 | } |
| 197 | (p, false) |
| 198 | } |
| 199 | None => { |
| 200 | let p = std::env::temp_dir().join(format!("bench51-{}.asm", std::process::id())); |
| 201 | if let Err(e) = std::fs::write(&p, self.text() + "\n") { |
| 202 | self.session.status = format!("cannot write {}: {e}", p.display()); |
| 203 | return; |
| 204 | } |
| 205 | (p, true) |
| 206 | } |
| 207 | }; |
| 208 | |
| 209 | let line = self.editor.cursor().0 + 1; |
| 210 | let result = editor_command(&path, line).status(); |
| 211 | let text = std::fs::read_to_string(&path); |
| 212 | if temp { |
| 213 | let _ = std::fs::remove_file(&path); |
| 214 | } |
| 215 | match (result, text) { |
| 216 | (Err(e), _) => self.session.status = format!("cannot start editor: {e}"), |
| 217 | (Ok(s), _) if !s.success() => { |
| 218 | self.session.status = format!("editor exited with {s}; changes not loaded") |
| 219 | } |
| 220 | (Ok(_), Err(e)) => self.session.status = format!("cannot read {}: {e}", path.display()), |
| 221 | (Ok(_), Ok(text)) => self.reload(&text, !temp), |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | /// Replaces the buffer with externally edited text, keeping the cursor |
| 226 | /// and breakpoints, and reassembles if anything changed. |
| 227 | fn reload(&mut self, text: &str, from_saved_file: bool) { |
| 228 | let lines: Vec<String> = text.lines().map(String::from).collect(); |
| 229 | let lines = if lines.is_empty() { |
| 230 | vec![String::new()] |
| 231 | } else { |
| 232 | lines |
| 233 | }; |
| 234 | if lines == self.editor.lines() { |
| 235 | self.session.status = "no changes from external editor".into(); |
| 236 | return; |
| 237 | } |
| 238 | let cursor = self.editor.cursor(); |
| 239 | let (row, col) = (cursor.0, cursor.1); |
| 240 | self.editor = TextArea::new(lines); |
| 241 | crate::ui::draw::style_editor(&mut self.editor); |
| 242 | self.editor |
| 243 | .move_cursor(CursorMove::Jump(row as u16, col as u16)); |
| 244 | if from_saved_file { |
| 245 | self.saved_text = self.text(); |
| 246 | } |
| 247 | let n = self.editor.lines().len(); |
| 248 | self.session.breakpoints.retain(|&l| l < n); |
| 249 | if self.assemble() { |
| 250 | self.session.status = format!("reloaded from external editor; {}", self.session.status); |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | // ---- Build & run ---- |
| 255 | |
| 256 | /// Assembles the editor contents. On success the program is loaded |
| 257 | /// into a freshly reset simulator; on errors the cursor jumps to the |
| 258 | /// first one. |
| 259 | pub fn assemble(&mut self) -> bool { |
| 260 | let source = self.text(); |
| 261 | let ok = self.session.assemble(&source, self.path.as_deref()); |
| 262 | if ok { |
| 263 | self.follow_pc(); |
| 264 | } else if let Some((_, out)) = &self.session.last_asm { |
| 265 | let first = &out.diagnostics[0]; |
| 266 | self.editor |
| 267 | .move_cursor(CursorMove::Jump(first.line as u16, first.col as u16)); |
| 268 | self.mode = Mode::Edit; |
| 269 | self.out_tab = OutTab::Errors; |
| 270 | } |
| 271 | self.out_scroll = 0; |
| 272 | ok |
| 273 | } |
| 274 | |
| 275 | /// Makes sure an up-to-date build is loaded; returns false on errors. |
| 276 | fn ensure_built(&mut self) -> bool { |
| 277 | if self.stale() && !self.assemble() { |
| 278 | return false; |
| 279 | } |
| 280 | if self.mode == Mode::Edit { |
| 281 | self.mode = Mode::Debug; |
| 282 | self.focus = Focus::Source; |
| 283 | } |
| 284 | true |
| 285 | } |
| 286 | |
| 287 | /// Moves the source cursor to the PC line. |
| 288 | pub fn follow_pc(&mut self) { |
| 289 | if let Some(l) = self.session.pc_line() { |
| 290 | self.src_cursor = l; |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | /// Runs a session command once a build is loaded, then follows the PC. |
| 295 | fn debug_cmd(&mut self, f: impl FnOnce(&mut Session)) { |
| 296 | if !self.ensure_built() { |
| 297 | return; |
| 298 | } |
| 299 | f(&mut self.session); |
| 300 | self.follow_pc(); |
| 301 | } |
| 302 | |
| 303 | fn toggle_run(&mut self) { |
| 304 | if self.session.running { |
| 305 | self.session.pause(); |
| 306 | self.follow_pc(); |
| 307 | } else if self.ensure_built() { |
| 308 | self.session.start(); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | /// Source line the cursor is on in the current mode. |
| 313 | fn cursor_line(&self) -> usize { |
| 314 | if self.mode == Mode::Debug { |
| 315 | self.src_cursor |
| 316 | } else { |
| 317 | self.editor.cursor().0 |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | fn run_to_cursor(&mut self) { |
| 322 | if !self.ensure_built() { |
| 323 | return; |
| 324 | } |
| 325 | let line = self.cursor_line(); |
| 326 | self.debug_cmd(|s| { |
| 327 | s.run_to_line(line); |
| 328 | }); |
| 329 | } |
| 330 | |
| 331 | fn reset(&mut self) { |
| 332 | self.session.reset(); |
| 333 | self.follow_pc(); |
| 334 | } |
| 335 | |
| 336 | fn toggle_breakpoint(&mut self) { |
| 337 | let line = self.cursor_line(); |
| 338 | self.session.toggle_breakpoint(line); |
| 339 | } |
| 340 | |
| 341 | /// Called once per frame. |
| 342 | pub fn tick(&mut self) { |
| 343 | if self.session.running { |
| 344 | self.session.tick(); |
| 345 | self.follow_pc(); |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | // ---- Input ---- |
| 350 | |
| 351 | pub fn on_mouse(&mut self, m: MouseEvent) { |
| 352 | let delta: isize = match m.kind { |
| 353 | MouseEventKind::ScrollDown => 3, |
| 354 | MouseEventKind::ScrollUp => -3, |
| 355 | _ => return, |
| 356 | }; |
| 357 | match self.mode { |
| 358 | Mode::Edit => self.out_scroll = self.out_scroll.saturating_add_signed(delta), |
| 359 | Mode::Debug => self.src_cursor = self.src_cursor.saturating_add_signed(delta), |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | pub fn on_key(&mut self, key: KeyEvent) { |
| 364 | let ctrl = key.modifiers.contains(KeyModifiers::CONTROL); |
| 365 | if !(ctrl && key.code == KeyCode::Char('q')) { |
| 366 | self.quit_armed = false; |
| 367 | } |
| 368 | if self.prompt.is_some() { |
| 369 | self.on_prompt_key(key); |
| 370 | return; |
| 371 | } |
| 372 | if self.show_help { |
| 373 | self.show_help = false; |
| 374 | return; |
| 375 | } |
| 376 | |
| 377 | // Global keys. |
| 378 | match (key.code, ctrl) { |
| 379 | (KeyCode::Char('q'), true) => { |
| 380 | if self.dirty() && !self.quit_armed { |
| 381 | self.quit_armed = true; |
| 382 | self.session.status = "unsaved changes — press Ctrl-Q again to quit".into(); |
| 383 | } else { |
| 384 | self.quit = true; |
| 385 | } |
| 386 | } |
| 387 | (KeyCode::F(1), _) => self.show_help = true, |
| 388 | (KeyCode::F(2), _) | (KeyCode::Char('s'), true) => self.save(None), |
| 389 | (KeyCode::Char('g'), true) => self.external_edit = true, |
| 390 | (KeyCode::F(3), _) | (KeyCode::Char('o'), true) => { |
| 391 | self.prompt = Some(Prompt { |
| 392 | kind: PromptKind::Open, |
| 393 | input: String::new(), |
| 394 | }) |
| 395 | } |
| 396 | (KeyCode::F(4), _) => match self.mode { |
| 397 | // ensure_built switches to debug mode on success. |
| 398 | Mode::Edit => { |
| 399 | self.ensure_built(); |
| 400 | } |
| 401 | Mode::Debug => self.mode = Mode::Edit, |
| 402 | }, |
| 403 | (KeyCode::F(5), _) => self.toggle_run(), |
| 404 | (KeyCode::F(6), _) => self.reset(), |
| 405 | (KeyCode::F(7), _) => { |
| 406 | if self.assemble() && self.mode == Mode::Edit { |
| 407 | self.out_tab = OutTab::Listing; |
| 408 | } |
| 409 | } |
| 410 | (KeyCode::F(8), _) => self.run_to_cursor(), |
| 411 | (KeyCode::F(9), _) => self.toggle_breakpoint(), |
| 412 | (KeyCode::F(10), _) => self.debug_cmd(Session::step_over), |
| 413 | (KeyCode::F(11), _) => self.debug_cmd(Session::step_into), |
| 414 | (KeyCode::F(12), _) => self.debug_cmd(Session::step_out), |
| 415 | _ => match self.mode { |
| 416 | Mode::Edit => self.on_edit_key(key), |
| 417 | Mode::Debug => self.on_debug_key(key), |
| 418 | }, |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | fn on_edit_key(&mut self, key: KeyEvent) { |
| 423 | let alt = key.modifiers.contains(KeyModifiers::ALT); |
| 424 | match key.code { |
| 425 | // Alt-1/2/3 switch the output tab; Alt-Up/Down scroll it. |
| 426 | KeyCode::Char('1') if alt => self.out_tab = OutTab::Listing, |
| 427 | KeyCode::Char('2') if alt => self.out_tab = OutTab::Hex, |
| 428 | KeyCode::Char('3') if alt => self.out_tab = OutTab::Errors, |
| 429 | KeyCode::Up if alt => self.out_scroll = self.out_scroll.saturating_sub(1), |
| 430 | KeyCode::Down if alt => self.out_scroll += 1, |
| 431 | KeyCode::PageUp if alt => self.out_scroll = self.out_scroll.saturating_sub(20), |
| 432 | KeyCode::PageDown if alt => self.out_scroll += 20, |
| 433 | KeyCode::Esc if self.session.running => self.toggle_run(), |
| 434 | _ => { |
| 435 | self.editor.input(key); |
| 436 | } |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | fn on_debug_key(&mut self, key: KeyEvent) { |
| 441 | if self.focus == Focus::Serial { |
| 442 | match key.code { |
| 443 | KeyCode::Enter => { |
| 444 | let mut bytes = std::mem::take(&mut self.serial_input).into_bytes(); |
| 445 | bytes.push(b'\r'); |
| 446 | self.session.sim.uart_send(&bytes); |
| 447 | return; |
| 448 | } |
| 449 | KeyCode::Backspace => { |
| 450 | self.serial_input.pop(); |
| 451 | return; |
| 452 | } |
| 453 | KeyCode::Char(c) if !key.modifiers.contains(KeyModifiers::CONTROL) => { |
| 454 | self.serial_input.push(c); |
| 455 | return; |
| 456 | } |
| 457 | _ => {} |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | let page = 16usize; |
| 462 | match key.code { |
| 463 | KeyCode::Tab => self.cycle_focus(true), |
| 464 | KeyCode::BackTab => self.cycle_focus(false), |
| 465 | KeyCode::Esc => { |
| 466 | if self.session.running { |
| 467 | self.toggle_run(); |
| 468 | } else if self.focus == Focus::Serial { |
| 469 | self.focus = Focus::Source; |
| 470 | } else { |
| 471 | self.mode = Mode::Edit; |
| 472 | } |
| 473 | } |
| 474 | KeyCode::Char('+') | KeyCode::Char('=') => { |
| 475 | self.session.speed = (self.session.speed + 1).min(SPEEDS.len() - 1) |
| 476 | } |
| 477 | KeyCode::Char('-') => self.session.speed = self.session.speed.saturating_sub(1), |
| 478 | KeyCode::Char('?') => self.show_help = true, |
| 479 | // Letter aliases for terminals that swallow function keys. |
| 480 | KeyCode::Char('r') => self.toggle_run(), |
| 481 | KeyCode::Char('s') => self.on_key(KeyEvent::from(KeyCode::F(11))), |
| 482 | KeyCode::Char('n') => self.on_key(KeyEvent::from(KeyCode::F(10))), |
| 483 | KeyCode::Char('o') => self.on_key(KeyEvent::from(KeyCode::F(12))), |
| 484 | KeyCode::Char('g') => self.run_to_cursor(), |
| 485 | KeyCode::Char('b') => self.toggle_breakpoint(), |
| 486 | KeyCode::Char('x') => self.reset(), |
| 487 | KeyCode::Char('e') => self.mode = Mode::Edit, |
| 488 | KeyCode::Char('i') => self.set_mem_tab(MemTab::Iram), |
| 489 | KeyCode::Char('f') => self.set_mem_tab(MemTab::Sfr), |
| 490 | KeyCode::Char('d') => self.set_mem_tab(MemTab::Xram), |
| 491 | KeyCode::Char('c') => self.set_mem_tab(MemTab::Code), |
| 492 | KeyCode::Char('p') => { |
| 493 | self.prompt = Some(Prompt { |
| 494 | kind: PromptKind::Poke, |
| 495 | input: String::new(), |
| 496 | }); |
| 497 | } |
| 498 | _ => match self.focus { |
| 499 | Focus::Source => self.move_src(key.code, page), |
| 500 | Focus::Memory => self.move_mem(key.code, page), |
| 501 | Focus::Ports => self.move_ports(key.code), |
| 502 | Focus::Serial => {} |
| 503 | }, |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | fn set_mem_tab(&mut self, tab: MemTab) { |
| 508 | self.mem_tab = tab; |
| 509 | self.mem_scroll = 0; |
| 510 | self.focus = Focus::Memory; |
| 511 | } |
| 512 | |
| 513 | fn cycle_focus(&mut self, fwd: bool) { |
| 514 | const ORDER: [Focus; 4] = [Focus::Source, Focus::Memory, Focus::Ports, Focus::Serial]; |
| 515 | let i = ORDER.iter().position(|&f| f == self.focus).unwrap_or(0); |
| 516 | let n = ORDER.len(); |
| 517 | self.focus = ORDER[if fwd { (i + 1) % n } else { (i + n - 1) % n }]; |
| 518 | } |
| 519 | |
| 520 | fn move_src(&mut self, code: KeyCode, page: usize) { |
| 521 | let max = self |
| 522 | .session |
| 523 | .build |
| 524 | .as_ref() |
| 525 | .map_or(0, |b| b.source.len().saturating_sub(1)); |
| 526 | self.src_cursor = match code { |
| 527 | KeyCode::Up => self.src_cursor.saturating_sub(1), |
| 528 | KeyCode::Down => self.src_cursor + 1, |
| 529 | KeyCode::PageUp => self.src_cursor.saturating_sub(page), |
| 530 | KeyCode::PageDown => self.src_cursor + page, |
| 531 | KeyCode::Home => 0, |
| 532 | KeyCode::End => max, |
| 533 | KeyCode::Char('.') => self.session.pc_line().unwrap_or(self.src_cursor), |
| 534 | _ => self.src_cursor, |
| 535 | } |
| 536 | .min(max); |
| 537 | } |
| 538 | |
| 539 | fn move_mem(&mut self, code: KeyCode, page: usize) { |
| 540 | let rows = match self.mem_tab { |
| 541 | MemTab::Iram => 16, |
| 542 | MemTab::Sfr => 8, |
| 543 | MemTab::Xram | MemTab::Code => 4096, |
| 544 | }; |
| 545 | self.mem_scroll = match code { |
| 546 | KeyCode::Up => self.mem_scroll.saturating_sub(1), |
| 547 | KeyCode::Down => self.mem_scroll + 1, |
| 548 | KeyCode::PageUp => self.mem_scroll.saturating_sub(page), |
| 549 | KeyCode::PageDown => self.mem_scroll + page, |
| 550 | KeyCode::Home => 0, |
| 551 | KeyCode::End => rows, |
| 552 | KeyCode::Left => { |
| 553 | self.mem_tab = match self.mem_tab { |
| 554 | MemTab::Iram => MemTab::Code, |
| 555 | MemTab::Sfr => MemTab::Iram, |
| 556 | MemTab::Xram => MemTab::Sfr, |
| 557 | MemTab::Code => MemTab::Xram, |
| 558 | }; |
| 559 | 0 |
| 560 | } |
| 561 | KeyCode::Right => { |
| 562 | self.mem_tab = match self.mem_tab { |
| 563 | MemTab::Iram => MemTab::Sfr, |
| 564 | MemTab::Sfr => MemTab::Xram, |
| 565 | MemTab::Xram => MemTab::Code, |
| 566 | MemTab::Code => MemTab::Iram, |
| 567 | }; |
| 568 | 0 |
| 569 | } |
| 570 | _ => self.mem_scroll, |
| 571 | } |
| 572 | .min(rows.saturating_sub(1)); |
| 573 | } |
| 574 | |
| 575 | fn move_ports(&mut self, code: KeyCode) { |
| 576 | let (port, bit) = &mut self.port_sel; |
| 577 | match code { |
| 578 | KeyCode::Up => *port = port.saturating_sub(1), |
| 579 | KeyCode::Down => *port = (*port + 1).min(3), |
| 580 | // Bits are drawn MSB first, so Left moves towards bit 7. |
| 581 | KeyCode::Left => *bit = (*bit + 1).min(7), |
| 582 | KeyCode::Right => *bit = bit.saturating_sub(1), |
| 583 | KeyCode::Char(' ') | KeyCode::Enter => { |
| 584 | self.session.sim.pins[*port] ^= 1 << *bit; |
| 585 | } |
| 586 | _ => {} |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | fn on_prompt_key(&mut self, key: KeyEvent) { |
| 591 | let Some(p) = &mut self.prompt else { return }; |
| 592 | match key.code { |
| 593 | KeyCode::Esc => self.prompt = None, |
| 594 | KeyCode::Backspace => { |
| 595 | p.input.pop(); |
| 596 | } |
| 597 | KeyCode::Char(c) => p.input.push(c), |
| 598 | KeyCode::Enter => { |
| 599 | let p = self.prompt.take().unwrap(); |
| 600 | let input = p.input.trim().to_string(); |
| 601 | if input.is_empty() { |
| 602 | return; |
| 603 | } |
| 604 | match p.kind { |
| 605 | PromptKind::Open => self.open(Path::new(&input)), |
| 606 | PromptKind::SaveAs => self.save(Some(PathBuf::from(input))), |
| 607 | PromptKind::Poke => self.poke(&input), |
| 608 | } |
| 609 | } |
| 610 | _ => {} |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | /// `addr value` → write `value` at `addr` in the current memory tab. |
| 615 | fn poke(&mut self, input: &str) { |
| 616 | let parse = |s: &str| { |
| 617 | let s = s.trim_start_matches("0x").trim_end_matches(['h', 'H']); |
| 618 | u32::from_str_radix(s, 16).ok() |
| 619 | }; |
| 620 | let parts: Vec<&str> = input.split_whitespace().collect(); |
| 621 | let (Some(addr), Some(val)) = ( |
| 622 | parts.first().and_then(|s| parse(s)), |
| 623 | parts.get(1).and_then(|s| parse(s)), |
| 624 | ) else { |
| 625 | self.session.status = "usage: <addr> <value> (hex), e.g. 30 FF".into(); |
| 626 | return; |
| 627 | }; |
| 628 | if val > 0xFF { |
| 629 | self.session.status = "value must be a byte".into(); |
| 630 | return; |
| 631 | } |
| 632 | self.session.poke(self.mem_tab, addr, val as u8); |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | /// Command that opens `path` at `line` in the user's editor: `$EDITOR`, |
| 637 | /// then `$VISUAL`, then `vi`. Run through `sh` so values such as |
| 638 | /// `code --wait` work as they do for git. |
| 639 | fn editor_command(path: &Path, line: usize) -> Command { |
| 640 | let editor = ["EDITOR", "VISUAL"] |
| 641 | .iter() |
| 642 | .filter_map(|v| std::env::var(v).ok()) |
| 643 | .find(|v| !v.trim().is_empty()) |
| 644 | .unwrap_or_else(|| "vi".into()); |
| 645 | // Editors known to accept `+LINE` before the file name. |
| 646 | let program = editor.split_whitespace().next().unwrap_or_default(); |
| 647 | let name = Path::new(program) |
| 648 | .file_name() |
| 649 | .and_then(|n| n.to_str()) |
| 650 | .unwrap_or_default(); |
| 651 | let goto = matches!( |
| 652 | name, |
| 653 | "vi" | "vim" | "nvim" | "nano" | "emacs" | "micro" | "kak" | "ne" |
| 654 | ) |
| 655 | .then(|| format!("+{line}")); |
| 656 | |
| 657 | let mut cmd = Command::new("sh"); |
| 658 | cmd.arg("-c").arg(format!("{editor} \"$@\"")).arg("sh"); |
| 659 | cmd.args(goto).arg(path); |
| 660 | cmd |
| 661 | } |
| 662 | |
| 663 | const TEMPLATE: &str = "\ |
| 664 | ; New 8051 program. F7 assembles, F5 runs, F11 steps, F1 shows all keys. |
| 665 | ORG 0000h |
| 666 | LJMP main |
| 667 | |
| 668 | ORG 0030h |
| 669 | main: MOV A,#01h ; walking LED pattern on P1 |
| 670 | loop: MOV P1,A |
| 671 | RL A |
| 672 | SJMP loop |
| 673 | |
| 674 | END |
| 675 | "; |