PlexusCXX

A Pascal lexer implemented in C++11, using finite‐state machines (FSM) for token recognition and doctest for unit testing. PlexusCXX reads a .pas source file, breaks it into tokens (keywords, identifiers, numbers, literals, operators, comments, etc.), reports any lexing errors, and can output results in plain text, JSON or CSV.

Features

• FSM‐based recognition of identifiers, numbers (with optional fractional and exponent parts), single‐quoted literals (strings & chars), {...} comments
• Error reporting for unterminated literals, invalid tokens, etc.
• Token table: collect and display unique lexemes by type
• CLI with options:
  • -f, --format [plain|json|csv] — choose output format (default: plain)
  • --no-colors — disable ANSI colors in plain output
  • -h, --help — show usage

Requirements

• A C++11-capable compiler (e.g. GCC ≥ 4.8, Clang ≥ 3.3, MSVC 2015+)
• CMake ≥ 3.1
• Internet access for FetchContent (to pull in doctest v2.4.12)

Building

git clone https://github.com/poliukhovych/PlexusCXX.git
cd PlexusCXX
mkdir build && cd build
cmake ..
make