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tc : typed c

Intro

This project is just a compiler course project, implementing a simple toy language named tc, the abbreviation of typed c.

There is also report and presentation slides, while simplified Chinese version only.

Type System

tc, as is named after, is a strongly typed programming language.

Type Safety

In tc, programmer can not do type conversion implicitly, but explicitly with a function from standard library. This is a major difference between C and tc, which ensures the type safety of tc.

Type Inference

The core type system of tc is Simply Typed Lambda Calculus, STLC. Due to the decidability of type inference in STLC, we decide to support it in tc. It frees programmers from writing lots of redundant type annotations.

C? and Features

The "c" in "typed c" have two explanation. One is of course C language, the other is the Caml language. In short, tc is the language that hashs C and Caml into the same block. Now that tc is similar to 2 different languages, features of tc can be divided into 2 classes.

  • C-like features
    • Mutable Variables, Pointers and Array
    • while and if Control Flow
  • Caml-like features
    • Type Inference
    • Immutable Variables
    • Algebraic Data Types, ADT : compose atom types.
    • Functions as First Citizens

Details are discribed in ./spec.

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