# DECISIONS — shared (append-only)

## 2026-06-15 — Token.value for non-numeric tokens

Decision: `Token.value` is `None` for operator/paren/EOF tokens, and `int` or `float` for NUMBER tokens.
Rationale: Parser phases only need the numeric value; operator/paren tokens carry no useful payload beyond their kind.

## 2026-06-15 — Float parsing strategy

Decision: Use Python's built-in `float()` for converting float literals. Detect float vs int by presence of `.` in the matched string.
Rationale: Handles edge cases like `.5` and `10.` correctly via stdlib, avoids manual parsing bugs.