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/**
* @param {string} value
* @returns {RegExp}
* */
/**
* @param {RegExp | string } re
* @returns {string}
*/
function source(re) {
if (!re) return null;
if (typeof re === "string") return re;
return re.source;
}
/**
* @param {RegExp | string } re
* @returns {string}
*/
function optional(re) {
return concat('(', re, ')?');
}
/**
* @param {...(RegExp | string) } args
* @returns {string}
*/
function concat(...args) {
const joined = args.map((x) => source(x)).join("");
return joined;
}
/*
Language: C-like foundation grammar for C/C++ grammars
Author: Ivan Sagalaev <maniac@softwaremaniacs.org>
Contributors: Evgeny Stepanischev <imbolk@gmail.com>, Zaven Muradyan <megalivoithos@gmail.com>, Roel Deckers <admin@codingcat.nl>, Sam Wu <samsam2310@gmail.com>, Jordi Petit <jordi.petit@gmail.com>, Pieter Vantorre <pietervantorre@gmail.com>, Google Inc. (David Benjamin) <davidben@google.com>
*/
/** @type LanguageFn */
function cLike(hljs) {
// added for historic reasons because `hljs.C_LINE_COMMENT_MODE` does
// not include such support nor can we be sure all the grammars depending
// on it would desire this behavior
const C_LINE_COMMENT_MODE = hljs.COMMENT('//', '$', {
contains: [
{
begin: /\\\n/
}
]
});
const DECLTYPE_AUTO_RE = 'decltype\\(auto\\)';
const NAMESPACE_RE = '[a-zA-Z_]\\w*::';
const TEMPLATE_ARGUMENT_RE = '<[^<>]+>';
const FUNCTION_TYPE_RE = '(' +
DECLTYPE_AUTO_RE + '|' +
optional(NAMESPACE_RE) +
'[a-zA-Z_]\\w*' + optional(TEMPLATE_ARGUMENT_RE) +
')';
const CPP_PRIMITIVE_TYPES = {
className: 'keyword',
begin: '\\b[a-z\\d_]*_t\\b'
};
// https://en.cppreference.com/w/cpp/language/escape
// \\ \x \xFF \u2837 \u00323747 \374
const CHARACTER_ESCAPES = '\\\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4,8}|[0-7]{3}|\\S)';
const STRINGS = {
className: 'string',
variants: [
{
begin: '(u8?|U|L)?"',
end: '"',
illegal: '\\n',
contains: [ hljs.BACKSLASH_ESCAPE ]
},
{
begin: '(u8?|U|L)?\'(' + CHARACTER_ESCAPES + "|.)",
end: '\'',
illegal: '.'
},
hljs.END_SAME_AS_BEGIN({
begin: /(?:u8?|U|L)?R"([^()\\ ]{0,16})\(/,
end: /\)([^()\\ ]{0,16})"/
})
]
};
const NUMBERS = {
className: 'number',
variants: [
{
begin: '\\b(0b[01\']+)'
},
{
begin: '(-?)\\b([\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)(u|U|l|L|ul|UL|f|F|b|B)'
},
{
begin: '(-?)(\\b0[xX][a-fA-F0-9\']+|(\\b[\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)([eE][-+]?[\\d\']+)?)'
}
],
relevance: 0
};
const PREPROCESSOR = {
className: 'meta',
begin: /#\s*[a-z]+\b/,
end: /$/,
keywords: {
'meta-keyword':
'if else elif endif define undef warning error line ' +
'pragma _Pragma ifdef ifndef include'
},
contains: [
{
begin: /\\\n/,
relevance: 0
},
hljs.inherit(STRINGS, {
className: 'meta-string'
}),
{
className: 'meta-string',
begin: /<.*?>/,
end: /$/,
illegal: '\\n'
},
C_LINE_COMMENT_MODE,
hljs.C_BLOCK_COMMENT_MODE
]
};
const TITLE_MODE = {
className: 'title',
begin: optional(NAMESPACE_RE) + hljs.IDENT_RE,
relevance: 0
};
const FUNCTION_TITLE = optional(NAMESPACE_RE) + hljs.IDENT_RE + '\\s*\\(';
const CPP_KEYWORDS = {
keyword: 'int float while private char char8_t char16_t char32_t catch import module export virtual operator sizeof ' +
'dynamic_cast|10 typedef const_cast|10 const for static_cast|10 union namespace ' +
'unsigned long volatile static protected bool template mutable if public friend ' +
'do goto auto void enum else break extern using asm case typeid wchar_t ' +
'short reinterpret_cast|10 default double register explicit signed typename try this ' +
'switch continue inline delete alignas alignof constexpr consteval constinit decltype ' +
'concept co_await co_return co_yield requires ' +
'noexcept static_assert thread_local restrict final override ' +
'atomic_bool atomic_char atomic_schar ' +
'atomic_uchar atomic_short atomic_ushort atomic_int atomic_uint atomic_long atomic_ulong atomic_llong ' +
'atomic_ullong new throw return ' +
'and and_eq bitand bitor compl not not_eq or or_eq xor xor_eq',
built_in: 'std string wstring cin cout cerr clog stdin stdout stderr stringstream istringstream ostringstream ' +
'auto_ptr deque list queue stack vector map set pair bitset multiset multimap unordered_set ' +
'unordered_map unordered_multiset unordered_multimap priority_queue make_pair array shared_ptr abort terminate abs acos ' +
'asin atan2 atan calloc ceil cosh cos exit exp fabs floor fmod fprintf fputs free frexp ' +
'fscanf future isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper ' +
'isxdigit tolower toupper labs ldexp log10 log malloc realloc memchr memcmp memcpy memset modf pow ' +
'printf putchar puts scanf sinh sin snprintf sprintf sqrt sscanf strcat strchr strcmp ' +
'strcpy strcspn strlen strncat strncmp strncpy strpbrk strrchr strspn strstr tanh tan ' +
'vfprintf vprintf vsprintf endl initializer_list unique_ptr _Bool complex _Complex imaginary _Imaginary',
literal: 'true false nullptr NULL'
};
const EXPRESSION_CONTAINS = [
PREPROCESSOR,
CPP_PRIMITIVE_TYPES,
C_LINE_COMMENT_MODE,
hljs.C_BLOCK_COMMENT_MODE,
NUMBERS,
STRINGS
];
const EXPRESSION_CONTEXT = {
// This mode covers expression context where we can't expect a function
// definition and shouldn't highlight anything that looks like one:
// `return some()`, `else if()`, `(x*sum(1, 2))`
variants: [
{
begin: /=/,
end: /;/
},
{
begin: /\(/,
end: /\)/
},
{
beginKeywords: 'new throw return else',
end: /;/
}
],
keywords: CPP_KEYWORDS,
contains: EXPRESSION_CONTAINS.concat([
{
begin: /\(/,
end: /\)/,
keywords: CPP_KEYWORDS,
contains: EXPRESSION_CONTAINS.concat([ 'self' ]),
relevance: 0
}
]),
relevance: 0
};
const FUNCTION_DECLARATION = {
className: 'function',
begin: '(' + FUNCTION_TYPE_RE + '[\\*&\\s]+)+' + FUNCTION_TITLE,
returnBegin: true,
end: /[{;=]/,
excludeEnd: true,
keywords: CPP_KEYWORDS,
illegal: /[^\w\s\*&:<>]/,
contains: [
{ // to prevent it from being confused as the function title
begin: DECLTYPE_AUTO_RE,
keywords: CPP_KEYWORDS,
relevance: 0
},
{
begin: FUNCTION_TITLE,
returnBegin: true,
contains: [ TITLE_MODE ],
relevance: 0
},
{
className: 'params',
begin: /\(/,
end: /\)/,
keywords: CPP_KEYWORDS,
relevance: 0,
contains: [
C_LINE_COMMENT_MODE,
hljs.C_BLOCK_COMMENT_MODE,
STRINGS,
NUMBERS,
CPP_PRIMITIVE_TYPES,
// Count matching parentheses.
{
begin: /\(/,
end: /\)/,
keywords: CPP_KEYWORDS,
relevance: 0,
contains: [
'self',
C_LINE_COMMENT_MODE,
hljs.C_BLOCK_COMMENT_MODE,
STRINGS,
NUMBERS,
CPP_PRIMITIVE_TYPES
]
}
]
},
CPP_PRIMITIVE_TYPES,
C_LINE_COMMENT_MODE,
hljs.C_BLOCK_COMMENT_MODE,
PREPROCESSOR
]
};
return {
aliases: [
'c',
'cc',
'h',
'c++',
'h++',
'hpp',
'hh',
'hxx',
'cxx'
],
keywords: CPP_KEYWORDS,
// the base c-like language will NEVER be auto-detected, rather the
// derivitives: c, c++, arduino turn auto-detect back on for themselves
disableAutodetect: true,
illegal: '</',
contains: [].concat(
EXPRESSION_CONTEXT,
FUNCTION_DECLARATION,
EXPRESSION_CONTAINS,
[
PREPROCESSOR,
{ // containers: ie, `vector <int> rooms (9);`
begin: '\\b(deque|list|queue|priority_queue|pair|stack|vector|map|set|bitset|multiset|multimap|unordered_map|unordered_set|unordered_multiset|unordered_multimap|array)\\s*<',
end: '>',
keywords: CPP_KEYWORDS,
contains: [
'self',
CPP_PRIMITIVE_TYPES
]
},
{
begin: hljs.IDENT_RE + '::',
keywords: CPP_KEYWORDS
},
{
className: 'class',
beginKeywords: 'enum class struct union',
end: /[{;:<>=]/,
contains: [
{
beginKeywords: "final class struct"
},
hljs.TITLE_MODE
]
}
]),
exports: {
preprocessor: PREPROCESSOR,
strings: STRINGS,
keywords: CPP_KEYWORDS
}
};
}
module.exports = cLike;