Gson-Compile

A java annotation processor implementing automated type adapter generation for gson-comments. The goal of this AP is to

• Support common features such as getters, setters, fields, constructors
• Support modern language features such as records
• Support json5 through gson-comments
• Be compile-time where possible (ideally compatible with proguard)

Supported types

• Primitives (and boxes)
• Records
• Nested serializable types
• Arrays
• Collections (Sets, Lists, Queues, Deques)
• java.util.Date as iso8601
• Enums
• Maps with string, primitive, enum or UUID keys

Used properties

Use @GPrefer to choose one construction method if multiple are available

• Builders (referenced in @GSerializable)
• Factory functions
• Constructors
• Getters/Setters
• Direct fields (public non-static only)

Additional features

• Support for generating Gson adapters to hook into the gson system
• Optional, strict no-reflection enforcement via -AgsonCompileNoReflect
• Comments via @GComment
• Several utility methods in the generated class for reading from/writing to various sources

TODO

• Support for nested types from libraries
• Static classes (for configs)

Credit

• The Gson-Compile processor is based on gsonvalue and value-processor by Eva Tatarka.
• The API was inspired by kotlinx.serialization by Jetbrains
• The serialization is powered by my fork of gson by Google