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hearth-macro-basics

Official

Foundation for fast, safe Hearth macro derivation

Software Engineering#macros#scala#derivation#rule-based#type-class#hearth
Authorkubuszok
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Core Hearth macro architecture provides a unified foundation for building type-class derivation macros that work across Scala 2.13 and Scala 3, speeding up compilation and ensuring consistent behavior across modules.

Core Features & Use Cases

  • Context-based parameter passing via a DerivationCtx to bundle all inputs for code generation.
  • Rule-based derivation architecture with a canonical ordering to coordinate decision points.
  • Logging with MIO and Log to trace macro decisions and help debugging.
  • Caching with ValDefsCache and MLocal to avoid duplicate definitions and support recursive derivation.
  • Self-type skip, placeholder caching, and cross-module entry point patterns to enable scalable macro modules.

Quick Start

Follow this pattern to implement a new Hearth-based macro derivation module by wiring a DerivationCtx and a Rules pipeline.

Dependency Matrix

Required Modules

None required

Components

Standard package

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Name: hearth-macro-basics
Download link: https://github.com/kubuszok/kindlings/archive/main.zip#hearth-macro-basics

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