Changelog

Copy Markdown View Source

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.1.0 - 2026-09-07

Initial release.

Added

  • Eleven mutator families over the Decimal call surface, each reported under its own name and independently enable-able:
    • Mutare.Decimal.Arithmetic (:decimal_arithmetic) — swaps same-arity arithmetic calls (add/sub/mult/div/div_int/rem) and reverses visible operands of the non-commutative ones.
    • Mutare.Decimal.Comparison (:decimal_comparison) — swaps comparison predicates (gt?/gte?/lt?/lte?), min/max, and reverses operands of compare/2,3 and the deprecated cmp/2.
    • Mutare.Decimal.Classification (:decimal_classification) — swaps classification predicates (positive? ↔ negative?, nan? ↔ inf?).
    • Mutare.Decimal.ZeroBoundary (:decimal_zero_boundary) — replaces positive?/negative? with inclusive zero-boundary comparisons.
    • Mutare.Decimal.Sign (:decimal_sign) — swaps abs/1 ↔ negate/1 and flips literal signs in Decimal.new/3.
    • Mutare.Decimal.DivRem (:decimal_div_rem) — rebuilds div_rem/2 with the quotient/remainder pair in the wrong tuple order.
    • Mutare.Decimal.Transform (:decimal_transform) — removes value-transforming calls (normalize, apply_context, abs, negate, sqrt, round/1,2,3).
    • Mutare.Decimal.ModeSwap (:decimal_mode_swap) — swaps round/3 rounding modes and to_string/2,3 output formats.
    • Mutare.Decimal.DefaultDrop (:decimal_default_drop) — drops refinement/default arguments (round/2,3, compare/3, eq?/3).
    • Mutare.Decimal.LimitsDrop (:decimal_limits_drop) — drops parsing/rendering limit arguments (parse/2, cast/2, new/2, to_string/2,3).
    • Mutare.Decimal.Context (:decimal_context) — removes Decimal.Context.with/set/update effects.
  • Calls match written qualified, aliased, imported, or as a pipe stage.
  • Ignore-variant labels on every mutation (target operation, mode, dropped argument, or operation kind), so # mutare:ignore[family:label] can suppress a single variant.
  • Mutare.Decimal.all/0 for splicing all families into a :mutators list.

Supports Decimal >= 2.2.0 and < 4.0.0.