MakeupC

A Makeup lexer for the C language.

Installation

Add makeup_c to your list of dependencies in mix.exs:

def deps do
  [
    {:makeup_c, ">= 0.0.0"}
  ]
end

The lexer registers itself with Makeup for the language name "c" and the file extensions c and h.

Coverage

The lexer targets C23 (ISO/IEC 9899:2024). It recognises:

• All C23 keywords, including the underscore-capital alternative spellings (_Atomic, _BitInt, _Generic, ...).
• The standard primitive types plus the typedefs from <stdint.h> (int8_t ... uint64_t, int_least*_t, int_fast*_t, intmax_t, uintmax_t, intptr_t, uintptr_t), <stddef.h> (size_t, ptrdiff_t, nullptr_t, max_align_t), and the ubiquitous FILE / va_list.
• Numeric constants in all bases (decimal, 0x/0X, 0b/0B, traditional 0-prefix octal and the C23 0o/0O form), with full integer (u, l, ll, wb) and floating (f, l, f16/f32/f64/f128, bf16, df/dd/dl) suffixes, hex floats (0x1.fp10), and the C23 ' digit separator.
• Character and string literals, including the L, u, U, u8 encoding prefixes and \NNN / \xNN / \u / \U escape forms.
• All C23 preprocessor directives, including #elifdef, #elifndef, #embed, and #warning. #include <header.h> is collapsed into a single string token.
• C23 [[...]] attribute sequences as decorators.
• The standard predefined macros (__FILE__, __LINE__, __func__, __VA_ARGS__, __VA_OPT__, __has_include, ...).

Basic C++ coverage is included so the same lexer can be used for .cpp / .h files: keywords like class, namespace, template, try/catch/throw, the co_* coroutine keywords, and the *_cast operators all highlight as keywords. There is no template-, namespace-, or type-aware logic — these are recognised purely as tokens.