/**
|
* @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
|
Category: common, system
|
Website: https://en.wikipedia.org/wiki/C_(programming_language)
|
*/
|
|
/** @type LanguageFn */
|
function c(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\']+)((ll|LL|l|L)(u|U)?|(u|U)(ll|LL|l|L)?|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: /<.*?>/
|
},
|
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 {
|
name: "C",
|
aliases: [
|
'h'
|
],
|
keywords: CPP_KEYWORDS,
|
// Until differentiations are added between `c` and `cpp`, `c` will
|
// not be auto-detected to avoid auto-detect conflicts between C and C++
|
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 = c;
|
