refactor: make Model::formulas private, expose read-only accessor

Previously `pub formulas: Vec<Formula>` allowed any code to call
`model.formulas.push(formula)` directly, bypassing the dedup logic in
`add_formula` that enforces the (target, target_category) uniqueness
invariant.

Making the field private means the only mutation paths are
`add_formula` and `remove_formula`, both of which maintain the invariant.
A `pub fn formulas(&self) -> &[Formula]` accessor preserves read access
for the UI and tests.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Ed L
2026-03-24 00:18:43 -07:00
parent d99d22820e
commit 5434a60cc4
3 changed files with 10 additions and 6 deletions

View File

@ -14,7 +14,7 @@ pub struct Model {
pub name: String, pub name: String,
pub categories: IndexMap<String, Category>, pub categories: IndexMap<String, Category>,
pub data: DataStore, pub data: DataStore,
pub formulas: Vec<Formula>, formulas: Vec<Formula>,
pub views: IndexMap<String, View>, pub views: IndexMap<String, View>,
pub active_view: String, pub active_view: String,
next_category_id: CategoryId, next_category_id: CategoryId,
@ -86,6 +86,10 @@ impl Model {
self.formulas.retain(|f| !(f.target == target && f.target_category == target_category)); self.formulas.retain(|f| !(f.target == target && f.target_category == target_category));
} }
pub fn formulas(&self) -> &[Formula] {
&self.formulas
}
pub fn active_view(&self) -> Option<&View> { pub fn active_view(&self) -> Option<&View> {
self.views.get(&self.active_view) self.views.get(&self.active_view)
} }

View File

@ -595,7 +595,7 @@ impl App {
fn handle_formula_panel_key(&mut self, key: KeyEvent) -> Result<()> { fn handle_formula_panel_key(&mut self, key: KeyEvent) -> Result<()> {
// Clamp cursor in case the formula list shrank since it was last set. // Clamp cursor in case the formula list shrank since it was last set.
let flen = self.model.formulas.len(); let flen = self.model.formulas().len();
if flen == 0 { self.formula_cursor = 0; } if flen == 0 { self.formula_cursor = 0; }
else { self.formula_cursor = self.formula_cursor.min(flen - 1); } else { self.formula_cursor = self.formula_cursor.min(flen - 1); }
@ -605,8 +605,8 @@ impl App {
self.mode = AppMode::FormulaEdit { buffer: String::new() }; self.mode = AppMode::FormulaEdit { buffer: String::new() };
} }
KeyCode::Char('d') | KeyCode::Delete => { KeyCode::Char('d') | KeyCode::Delete => {
if self.formula_cursor < self.model.formulas.len() { if self.formula_cursor < self.model.formulas().len() {
let f = &self.model.formulas[self.formula_cursor]; let f = &self.model.formulas()[self.formula_cursor];
let target = f.target.clone(); let target = f.target.clone();
let target_category = f.target_category.clone(); let target_category = f.target_category.clone();
command::dispatch(&mut self.model, &Command::RemoveFormula { target, target_category }); command::dispatch(&mut self.model, &Command::RemoveFormula { target, target_category });
@ -618,7 +618,7 @@ impl App {
if self.formula_cursor > 0 { self.formula_cursor -= 1; } if self.formula_cursor > 0 { self.formula_cursor -= 1; }
} }
KeyCode::Down | KeyCode::Char('j') => { KeyCode::Down | KeyCode::Char('j') => {
if self.formula_cursor + 1 < self.model.formulas.len() { self.formula_cursor += 1; } if self.formula_cursor + 1 < self.model.formulas().len() { self.formula_cursor += 1; }
} }
_ => {} _ => {}
} }

View File

@ -36,7 +36,7 @@ impl<'a> Widget for FormulaPanel<'a> {
let inner = block.inner(area); let inner = block.inner(area);
block.render(area, buf); block.render(area, buf);
let formulas = &self.model.formulas; let formulas = self.model.formulas();
if formulas.is_empty() { if formulas.is_empty() {
buf.set_string(inner.x, inner.y, buf.set_string(inner.x, inner.y,