danidiaz / triviallanguage

An even simpler version of Graal/Truffle's SimpleLanguage

TrivialLanguage

This is a simpler version of Truffle's SimpleLanguage, showcasing fewer of Truffle's capabilities.

It is intended to show the absolute basics of Truffle.

Differences with SimpleLanguage

• Only string and int literals allowed.
  • No bools
  • No function literals.
  • No nulls.
• No suport for objects.
• Sum (+) is the only binary operation (works on both Strings and Ints, like in SimpleLanguage).
• No suport for local variables other than function arguments.
• Function definitions are only allowed at the top level.
• Functions can't be redefined.
  • This makes TLFunction a bit simpler than SLFunction.
    • It receives the RootNode in the constructor itself.
• Function bodies can only consist of single expressions.
  • There aren't any statements or looping constructs.
  • We don't have to catch control flow exceptions thrown by return nodes.
    • There's no need of a SLFunctionBodyNode analogue for catching control flow exceptions