Version 0.5.0

Breaking Changes

SQL support now requires the -sql flag (previously generated by default)

• Before: SQL interfaces were always generated
• After: SQL interfaces only generated when -sql flag is provided
• Migration: Add -sql to your go:generate directives if using SQL databases

New Features

• MongoDB BSON support (-bson flag): Generates proper BSON marshal/unmarshal methods
• YAML support (-yaml flag): Generates yaml.v3 marshal/unmarshal methods
• Conditional code generation: All database/serialization features are now opt-in

Bug Fixes

• Fixed MongoDB storage issue where enums were stored as empty documents instead of strings
• Fixed handling of negative enum values (e.g., PriorityNone = -1)
• Fixed SQL NULL handling to use zero value when available

Improvements

• Added comprehensive integration tests with real databases (MongoDB via testcontainers, SQLite)
• Improved test coverage to 99.6%
• Added runtime verification tests
• Updated documentation and examples

Usage Examples

# Basic enum (no database support)
go run github.com/go-pkgz/enum@latest -type status -lower

# With SQL support (REQUIRED if you use SQL databases)
go run github.com/go-pkgz/enum@latest -type status -sql

# With MongoDB support
go run github.com/go-pkgz/enum@latest -type status -bson -lower

# With all features
go run github.com/go-pkgz/enum@latest -type status -sql -bson -yaml -lower

v0.4.0

Performance Improvements

• O(1) map-based parsing replacing switch statements (10x faster)
• Pre-computed Values and Names as package variables instead of functions
• Single shared enum instances to reduce memory allocation

New Features

• SQL support with driver.Valuer and sql.Scanner interfaces
• Smart SQL NULL handling (uses zero value when available, errors otherwise)
• Index() method for accessing underlying integer values
• -getter flag for generating GetTypeByID functions (with validation for unique values)
• -lower flag for lowercase string representation in marshaling
• Preserve underlying type information (uint8, int32, etc.) in generated code

Improvements

• Preserve source declaration order (was alphabetical before)
• Character literal support ('A', '\n', '\x00', etc.)
• Enhanced error messages with specific invalid value reporting
• Better binary expression handling with iota operations
• Fixed iota increment bug (now increments per ValueSpec as Go spec requires)
• Proper handling of underscore placeholders in const blocks
• Better edge case handling (division by zero, empty blocks)

Testing & Quality

• Test coverage improved from 90.5% to 99.6%
• Comprehensive test suite for all new features
• Updated documentation with SQL examples and feature descriptions

Installation

go install github.com/go-pkgz/enum@v0.4.0

Full Changelog

v0.3.1...v0.4.0

Release v0.3.1

What's new

• Fix handling of binary expressions with iota (fixes #14)
• Now properly handles enum definitions like
• Previously, the first constant was being skipped when using expressions like

Release v0.3.0

What's new

• Add dummy usage of enum constants to prevent linter warnings
• Improve README documentation for naming conventions and parameters
• Fix go:generate examples in README to include @latest tag
• Add Go 1.23 iterator support
• Add support to get the enum value by the constant int value
• Fix handling of repeated constant values in enum declarations
• Add support for explicit enum values instead of assuming sequential iota values
• Update dependencies
• Improve file permission handling

Version 0.2.0

What's Changed

• Fix missing strings import when generating without -lower flag by @codemageddon in #4
• Add support for complex type names by @codemageddon in #3

New Contributors

• @codemageddon made their first contribution in #4

Full Changelog: v0.1.3...v0.2.0

Version 0.1.0

initial release