Oolang

Oolang is a JVM language

• modern & simple syntax
• no additional std-lib
• NPE-safety
• fully compatible with Java

package com.example

import org.slf4j.Logger
import org.slf4j.LoggerFactory

class UserService(private val repository: UserRepository) {
  private static val LOGGER: Logger by lazy { LoggerFactory.getLogger(UserService.class) }

  fun getByName(name: String) = repository.getByName(name)
  
  fun save(user: User) {
    LOGGER.info { "Saving new user ${user.name}" }
    repository.save(user)
  }
}

You can read our draft ideas page.

Oolang compiler

Compiling Oolang source code involves 3 stages

1. lexer + parser
2. semantic analyzer
3. compiler

Parser

The lexer and the parser phases (aka syntax analysis) use ANTLR v4 to parse your Oolang source code.
The output of this first stage is a raw Abstract Syntax Tree, or AST.

Semantic analyzer

The semantic analysis phase checks that your syntactically correct Oolang source code is also meaningful: variables are declared before use, types match, function signatures are respected.
During this phase the AST is enriched with the resolved types, function signatures, property and function calls, etc.

Compiler

The compiler phase transforms the enriched Oolang AST to JVM bytecode using Java Class-File API.