Circular or self-referencing formulas now return CellValue::Error
instead of stack overflowing. eval_expr uses Result<f64, String>
internally so errors (circular refs, div/0, missing refs) propagate
immediately through the expression tree via ?. The depth limit (16)
is checked per evaluate_depth call — normal 1-2 level chains are
unaffected.
Also adds CellValue::Error variant for displaying ERR:reason in the
grid, and handles it in format, persistence, and search.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Clean up formatting and code style across the project.
- Remove unnecessary whitespace and empty lines in `src/model/cell.rs` ,
`src/model/types.rs` , and `src/draw.rs` .
- Reformat long lines and function calls in `src/command/cmd.rs` ,
`src/ui/grid.rs` , and `src/ui/tile_bar.rs` for better readability.
- Consolidate imports and simplify expressions in `src/command/keymap.rs` and
`src/ui/app.rs` .
Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/gemma-4-26B-A4B-it-GGUF:UD-Q5_K_XL)
Refactor DataStore to use interned keys (InternedKey) instead of
string-based CellKey for O(1) hash and compare operations.
Introduce SymbolTable-backed interning for all category and item
names, storing them as Symbol identifiers throughout the data structure.
Add secondary index mapping (category, item) pairs to sets of interned
keys, enabling efficient partial match queries without scanning all cells.
Optimize matching_values() to avoid allocating CellKey strings by
working directly with interned keys and intersecting index sets.
Update all callers to use new API: iter_cells(), matching_values(),
and internal lookup_key() helper.
Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/Qwen3.5-35B-A3B-GGUF:Q5_K_M)
Removes unused methods (sum_matching, get_mut, item_by_name, item_index,
top_level_groups, is_group_collapsed, show_item) and unused constants
(LABEL_THRESHOLD, MIN_COL_WIDTH).
The sum_matching tests in model.rs were bypassing the formula evaluator
entirely. Replaced them with equivalent tests that call evaluate() against
the existing Total = SUM(Revenue) formula, exercising the real aggregation
code path.
Also fixes a compile error in view.rs prop_tests where View/Axis imports
and a doc comment were incorrectly commented out.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The CSV export used Box<dyn Iterator<Item = Option<usize>>> to unify
empty and non-empty row iteration, violating the CLAUDE.md rule that
Box/Rc container management should be split from logic. Replaced with a
direct for loop over row indices, removing both the Box and the Option
sentinels used to represent "placeholder empty row/col".
Also removes unused pub use cell::CellKey re-export and an unused
import in cell.rs tests.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Previously CellValue had three variants: Number, Text, and Empty.
The Empty variant acted as a null sentinel, but the compiler could not
distinguish between "this is a real value" and "this might be empty".
Code that received a CellValue could use it without checking for Empty,
because there was no type-level enforcement.
Now CellValue has only Number and Text. The absence of a value is
represented as None at every API boundary:
DataStore::get() → Option<&CellValue> (was &CellValue / Empty)
Model::get_cell() → Option<&CellValue> (was &CellValue / Empty)
Model::evaluate() → Option<CellValue> (was CellValue::Empty)
eval_formula() → Option<CellValue> (was CellValue::Empty)
Model gains clear_cell() for explicit key removal; ClearCell dispatch
calls it instead of set_cell(key, CellValue::Empty).
The compiler now forces every caller of evaluate/get_cell to handle
the None case explicitly — accidental use of an empty value as if it
were real is caught at compile time rather than silently computing
wrong results.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
