Prolog Syntax Highlighter (SWI)

A VS Code extension for SWI-Prolog that provides syntax highlighting for Prolog source code.

Overview

This extension provides syntax highlighting and basic editor support when editing Prolog files (.pl, .pro, .prolog) in VS Code.

Main Features

Syntax Highlighting

• Comments: Line comments (%) and block comments (/* */)
• Strings: Single-quoted ('...') and double-quoted ("...") strings
• Quasi-quotations: SWI-Prolog quasi-quotation notation ({|...|}）
• Numbers:
  • Integers
  • Floating-point numbers
  • Hexadecimal (0x...)
  • Binary (0b...)
  • Octal (0o...)
  • Character codes (0'x)
• Variables:
  • Anonymous variable (_)
  • Named variables (_Var, Var)
• Directives: :- module, :- use_module, :- dynamic, etc.
• DCG notation: --> operator
• Operators: =, is, =:=, ==, :-, ?-, etc.
• Built-in predicates: true, false, write, findall, member, append, etc.

Editor Features

• Auto-completion: Auto-closing of brackets ((), [], {}) and quotes (', ")
• Comment configuration: Toggle support for line and block comments
• Indentation: Default tab size of 2 spaces

File Associations

• Automatically recognizes .pl files as Prolog (configurable in settings)
• Also supports .pro and .prolog extensions