filetype: c++

detect:
    filename: "(\\.c(c|pp|xx)$|\\.h(h|pp|xx)?$|\\.ii?$|\\.(def)$)"
    signature: "\\b(namespace|class|public|protected|private|template|constexpr|noexcept|nullptr|throw)\\b"

rules:
    - identifier: "\\b[A-Z_][0-9A-Z_]*\\b"
    - type: "\\b(float|double|bool|char|int|short|long|enum|void|struct|union|typedef|(un)?signed|inline)\\b"
    - type: "\\b(((s?size)|((u_?)?int(8|16|32|64|ptr))|char(8|16|32))_t|wchar_t)\\b"
    - type: "\\b[a-z_][0-9a-z_]+(_t|_T)\\b"
    - type: "\\b(final|override)\\b"
    - statement: "\\b(auto|volatile|const(expr|eval|init)?|mutable|register|thread_local|static|extern|decltype|explicit|virtual)\\b"
    - statement: "\\b(class|namespace|template|typename|this|friend|using|public|protected|private|noexcept)\\b"
    - statement: "\\b(concept|requires)\\b"
    - statement: "\\b(import|export|module)\\b"
    - statement: "\\b(for|if|while|do|else|case|default|switch)\\b"
    - statement: "\\b(try|throw|catch|operator|new|delete|static_assert)\\b"
    - statement: "\\b(goto|continue|break|return)\\b"
    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|include|(un|ifn?)def|endif|el(if|se)|if|warning|error)|_Pragma"

      # Conditionally-supported/extension keywords
    - statement: "\\b(asm|fortran)\\b"

      # GCC builtins
    - statement: "(__attribute__[[:space:]]*\\(\\([^)]*\\)\\)|__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__)"

      # Operator Color
    - symbol.operator: "[-+*/%=<>.:;,~&|^!?]|\\b(sizeof|alignof|typeid|(and|or|xor|not)(_eq)?|bitor|compl|bitand|(const|dynamic|reinterpret|static)_cast)\\b"
      # Parenthetical Color
    - symbol.brackets: "[(){}]|\\[|\\]"

      # Integer Literals
    - constant.number: "(\\b([0-9]|0[0-7]|0[Xx][0-9A-Fa-f]|0[Bb][01])([Uu][Ll]?[Ll]?|[Ll][Ll]?[Uu]?)?\\b)"      # Base case (Without ' separtor)
    - constant.number: "(\\b([1-9][0-9']*[0-9])([Uu][Ll]?[Ll]?|[Ll][Ll]?[Uu]?)?\\b)"                            # Decimal
    - constant.number: "(\\b(0[0-7][0-7']*[0-7])([Uu][Ll]?[Ll]?|[Ll][Ll]?[Uu]?)?\\b)"                           # Oct
    - constant.number: "(\\b(0[Xx][0-9A-Fa-f][0-9A-Fa-f']*[0-9A-Fa-f])([Uu][Ll]?[Ll]?|[Ll][Ll]?[Uu]?)?\\b)"     # Hex
    - constant.number: "(\\b(0[Bb][01][01']*[01])([Uu][Ll]?[Ll]?|[Ll][Ll]?[Uu]?)?\\b)"                          # Binary

      # Decimal Floating-point Literals
    - constant.number: "(([0-9]?[.]?[0-9]+)([Ee][+-]?[0-9]+)?[FfLl]?\\b)"                                       # Base case optional interger part with exponent base case
    - constant.number: "(\\b([0-9]+[.][0-9]?)([Ee][+-]?[0-9]+)?[FfLl]?)"                                        # Base case optional fractional part with exponent base case
    - constant.number: "(([0-9]?[.]?[0-9]+)([Ee][+-]?[0-9][0-9']*[0-9])?[FfLl]?\\b)"                            # Base case optional interger part with exponent
    - constant.number: "(\\b([0-9]+[.][0-9]?)([Ee][+-]?[0-9][0-9']*[0-9])?[FfLl]?)"                             # Base case optional fractional part with exponent

    - constant.number: "(([0-9][0-9']*[0-9])?[.]?([0-9][0-9']*[0-9])+([Ee][+-]?[0-9]+)?[FfLl]?\\b)"             # Optional interger part with exponent base case
    - constant.number: "(\\b([0-9][0-9']*[0-9])+[.]([0-9][0-9']*[0-9])?([Ee][+-]?[0-9]+)?[FfLl]?)"              # Optional fractional part with exponent base case
    - constant.number: "(([0-9][0-9']*[0-9])?[.]?([0-9][0-9']*[0-9])+([Ee][+-]?[0-9][0-9']*[0-9])?[FfLl]?\\b)"  # Optional interger part with exponent
    - constant.number: "(\\b([0-9][0-9']*[0-9])+[.]([0-9][0-9']*[0-9])?([Ee][+-]?[0-9][0-9']*[0-9])?[FfLl]?)"   # Optional fractional part with exponent

      # Hexadecimal Floating-point Literals
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z]?[.]?[0-9a-zA-Z]+)([Pp][+-]?[0-9]+)?[FfLl]?\\b)"                   # Base case optional interger part with exponent base case
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z]+[.][0-9a-zA-Z]?)([Pp][+-]?[0-9]+)?[FfLl]?)"                       # Base case optional fractional part with exponent base case
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z]?[.]?[0-9a-zA-Z]+)([Pp][+-]?[0-9][0-9']*[0-9])?[FfLl]?\\b)"        # Base case optional interger part with exponent
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z]+[.][0-9a-zA-Z]?)([Pp][+-]?[0-9][0-9']*[0-9])?[FfLl]?)"            # Base case optional fractional part with exponent

    - constant.number: "(\\b0[Xx]([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])?[.]?([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])+([Pp][+-]?[0-9]+)?[FfLl]?\\b)"             # Optional interger part with exponent base case
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])+[.]([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])?([Pp][+-]?[0-9]+)?[FfLl]?)"                 # Optional fractional part with exponent base case
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])?[.]?([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])+([Pp][+-]?[0-9][0-9']*[0-9])?[FfLl]?\\b)"  # Optional interger part with exponent
    - constant.number: "(\\b0[Xx]([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])+[.]([0-9a-zA-Z][0-9a-zA-Z']*[0-9a-zA-Z])?([Pp][+-]?[0-9][0-9']*[0-9])?[FfLl]?)"      # Optional fractional part with exponent

    - constant.bool: "(\\b(true|false|NULL|nullptr|TRUE|FALSE)\\b)"

    - constant.string:
        start: "\""
        end: "\""
        skip: "\\\\."
        rules:
            - constant.specialChar: "\\\\([\"'abfnrtv\\\\]|[0-3]?[0-7]{1,2}|x[0-9A-Fa-f]{1,2}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})"

    - constant.string:
        start: "'"
        end: "'"
        skip: "(\\\\.)|(\\b[1-9][0-9']+[0-9]|0[0-7']+[0-7]|0[Xx][0-9A-Fa-f][0-9A-Fa-f']+[0-9A-Fa-f]|0[Bb][01][01']*[01]\\b)"
        rules:
              # TODO: Revert back to - error: "..+" once #3127 is merged
            - error: "[[:graph:]]{2,}'"
            - constant.specialChar: "\\\\([\"'abfnrtv\\\\]|[0-3]?[0-7]{1,2}|x[0-9A-Fa-f]{1,2}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})"

    - comment:
        start: "//"
        end: "$"
        rules:
            - todo: "(TODO|XXX|FIXME):?"

    - comment:
        start: "/\\*"
        end: "\\*/"
        rules:
            - todo: "(TODO|XXX|FIXME):?"