Camlp4 in the context of Preprocessor

⭐ Core Definition: Camlp4

Camlp4 is a software system for writing extensible parsers for programming languages. It provides a set of OCaml libraries that are used to define grammars as well as loadable syntax extensions of such grammars. Camlp4 stands for Caml Preprocessor and Pretty-Printer and one of its most important applications was the definition of domain-specific extensions of the syntax of OCaml.

Camlp4 was part of the official OCaml distribution which is developed at the INRIA. Its original author is Daniel de Rauglaudre. OCaml version 3.10.0, released in May 2007, introduced a significantly modified and backward-incompatible version of Camlp4. De Rauglaudre maintains a separate backward-compatible version, which has been renamed Camlp5. All of the examples below are for Camlp5 or the previous version of Camlp4 (versions 3.09 and prior).

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Camlp4 in the context of Semantics encoding

A semantics encoding is a translation between formal languages. For programmers, the most familiar form of encoding is the compilation of a programming language into machine code or byte-code. Conversion between document formats are also forms of encoding. Compilation of TeX or LaTeX documents to PostScript are also commonly encountered encoding processes. Some high-level preprocessors, such as OCaml's Camlp4, also involve encoding of a programming language into another.

Formally, an encoding of a language A into language B is a mapping of all terms of A into B. If there is a satisfactory encoding of A into B, B is considered at least as powerful (or at least as expressive) as A.

View the full Wikipedia page for Semantics encoding

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⭐ Core Definition: Camlp4

Camlp4 in the context of Semantics encoding