GOOL: A Generic Object-Oriented Language (extended version)
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We present GOOL, a Generic Object-Oriented Language. It demonstrates that a language, with the right abstractions, can capture the essence of object-oriented programs. We show how GOOL programs can be used to generate human-readable, documented and idiomatic source code in multiple languages. Moreover, in GOOL, it is possible to express common programming idioms and patterns, from simple library-level functions, to simple tasks (command-line arguments, list processing, printing), to more complex patterns, such as methods with a mixture of input, output and in-out parameters, and finally Design Patterns (such as Observer, State and Strategy). GOOL is an embedded DSL in Haskell that can generate code in Python, Java, C# and C++.
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