1 package c
2
3 import (
4 . "github.com/alecthomas/chroma"
5 "github.com/alecthomas/chroma/lexers/internal"
6 )
7
8
9 var CPP = internal.Register(MustNewLazyLexer(
10 &Config{
11 Name: "C++",
12 Aliases: []string{"cpp", "c++"},
13 Filenames: []string{"*.cpp", "*.hpp", "*.c++", "*.h++", "*.cc", "*.hh", "*.cxx", "*.hxx", "*.C", "*.H", "*.cp", "*.CPP"},
14 MimeTypes: []string{"text/x-c++hdr", "text/x-c++src"},
15 EnsureNL: true,
16 },
17 cppRules,
18 ))
19
20 func cppRules() Rules {
21 return Rules{
22 "statements": {
23 {Words(``, `\b`, `catch`, `const_cast`, `delete`, `dynamic_cast`, `explicit`, `export`, `friend`, `mutable`, `namespace`, `new`, `operator`, `private`, `protected`, `public`, `reinterpret_cast`, `restrict`, `static_cast`, `template`, `this`, `throw`, `throws`, `try`, `typeid`, `typename`, `using`, `virtual`, `constexpr`, `nullptr`, `decltype`, `thread_local`, `alignas`, `alignof`, `static_assert`, `noexcept`, `override`, `final`, `concept`, `requires`, `consteval`, `co_await`, `co_return`, `co_yield`), Keyword, nil},
24 {`(enum)\b(\s+)(class)\b(\s*)`, ByGroups(Keyword, Text, Keyword, Text), Push("classname")},
25 {`(class|struct|enum|union)\b(\s*)`, ByGroups(Keyword, Text), Push("classname")},
26 {`\[\[.+\]\]`, NameAttribute, nil},
27 {`(R)(")([^\\()\s]{,16})(\()((?:.|\n)*?)(\)\3)(")`, ByGroups(LiteralStringAffix, LiteralString, LiteralStringDelimiter, LiteralStringDelimiter, LiteralString, LiteralStringDelimiter, LiteralString), nil},
28 {`(u8|u|U)(")`, ByGroups(LiteralStringAffix, LiteralString), Push("string")},
29 {`(L?)(")`, ByGroups(LiteralStringAffix, LiteralString), Push("string")},
30 {`(L?)(')(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])(')`, ByGroups(LiteralStringAffix, LiteralStringChar, LiteralStringChar, LiteralStringChar), nil},
31 {`(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*`, LiteralNumberFloat, nil},
32 {`(\d+\.\d*|\.\d+|\d+[fF])[fF]?`, LiteralNumberFloat, nil},
33 {`0[xX]([0-9A-Fa-f]('?[0-9A-Fa-f]+)*)[LlUu]*`, LiteralNumberHex, nil},
34 {`0('?[0-7]+)+[LlUu]*`, LiteralNumberOct, nil},
35 {`0[Bb][01]('?[01]+)*[LlUu]*`, LiteralNumberBin, nil},
36 {`[0-9]('?[0-9]+)*[LlUu]*`, LiteralNumberInteger, nil},
37 {`\*/`, Error, nil},
38 {`[~!%^&*+=|?:<>/-]`, Operator, nil},
39 {`[()\[\],.]`, Punctuation, nil},
40 {Words(``, `\b`, `asm`, `auto`, `break`, `case`, `const`, `continue`, `default`, `do`, `else`, `enum`, `extern`, `for`, `goto`, `if`, `register`, `restricted`, `return`, `sizeof`, `static`, `struct`, `switch`, `typedef`, `union`, `volatile`, `while`), Keyword, nil},
41 {`(bool|int|long|float|short|double|char((8|16|32)_t)?|wchar_t|unsigned|signed|void|u?int(_fast|_least|)(8|16|32|64)_t)\b`, KeywordType, nil},
42 {Words(``, `\b`, `inline`, `_inline`, `__inline`, `naked`, `restrict`, `thread`, `typename`), KeywordReserved, nil},
43 {`(__m(128i|128d|128|64))\b`, KeywordReserved, nil},
44 {Words(`__`, `\b`, `asm`, `int8`, `based`, `except`, `int16`, `stdcall`, `cdecl`, `fastcall`, `int32`, `declspec`, `finally`, `int64`, `try`, `leave`, `w64`, `unaligned`, `raise`, `noop`, `identifier`, `forceinline`, `assume`), KeywordReserved, nil},
45 {`(true|false|NULL)\b`, NameBuiltin, nil},
46 {`([a-zA-Z_]\w*)(\s*)(:)(?!:)`, ByGroups(NameLabel, Text, Punctuation), nil},
47 {`[a-zA-Z_]\w*`, Name, nil},
48 },
49 "root": {
50 Include("whitespace"),
51 {`((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;{]*)(\{)`, ByGroups(UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), Push("function")},
52 {`((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;]*)(;)`, ByGroups(UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), nil},
53 Default(Push("statement")),
54 {Words(`__`, `\b`, `virtual_inheritance`, `uuidof`, `super`, `single_inheritance`, `multiple_inheritance`, `interface`, `event`), KeywordReserved, nil},
55 {`__(offload|blockingoffload|outer)\b`, KeywordPseudo, nil},
56 },
57 "classname": {
58 {`(\[\[.+\]\])(\s*)`, ByGroups(NameAttribute, Text), nil},
59 {`[a-zA-Z_]\w*`, NameClass, Pop(1)},
60 {`\s*(?=[>{])`, Text, Pop(1)},
61 },
62 "whitespace": {
63 {`^#if\s+0`, CommentPreproc, Push("if0")},
64 {`^#`, CommentPreproc, Push("macro")},
65 {`^(\s*(?:/[*].*?[*]/\s*)?)(#if\s+0)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("if0")},
66 {`^(\s*(?:/[*].*?[*]/\s*)?)(#)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("macro")},
67 {`\n`, Text, nil},
68 {`\s+`, Text, nil},
69 {`\\\n`, Text, nil},
70 {`//(\n|[\w\W]*?[^\\]\n)`, CommentSingle, nil},
71 {`/(\\\n)?[*][\w\W]*?[*](\\\n)?/`, CommentMultiline, nil},
72 {`/(\\\n)?[*][\w\W]*`, CommentMultiline, nil},
73 },
74 "statement": {
75 Include("whitespace"),
76 Include("statements"),
77 {`[{]`, Punctuation, Push("root")},
78 {`[;}]`, Punctuation, Pop(1)},
79 },
80 "function": {
81 Include("whitespace"),
82 Include("statements"),
83 {`;`, Punctuation, nil},
84 {`\{`, Punctuation, Push()},
85 {`\}`, Punctuation, Pop(1)},
86 },
87 "string": {
88 {`"`, LiteralString, Pop(1)},
89 {`\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8}|[0-7]{1,3})`, LiteralStringEscape, nil},
90 {`[^\\"\n]+`, LiteralString, nil},
91 {`\\\n`, LiteralString, nil},
92 {`\\`, LiteralString, nil},
93 },
94 "macro": {
95 {`(include)(\s*(?:/[*].*?[*]/\s*)?)([^\n]+)`, ByGroups(CommentPreproc, Text, CommentPreprocFile), nil},
96 {`[^/\n]+`, CommentPreproc, nil},
97 {`/[*](.|\n)*?[*]/`, CommentMultiline, nil},
98 {`//.*?\n`, CommentSingle, Pop(1)},
99 {`/`, CommentPreproc, nil},
100 {`(?<=\\)\n`, CommentPreproc, nil},
101 {`\n`, CommentPreproc, Pop(1)},
102 },
103 "if0": {
104 {`^\s*#if.*?(?<!\\)\n`, CommentPreproc, Push()},
105 {`^\s*#el(?:se|if).*\n`, CommentPreproc, Pop(1)},
106 {`^\s*#endif.*?(?<!\\)\n`, CommentPreproc, Pop(1)},
107 {`.*?\n`, Comment, nil},
108 },
109 }
110 }
111
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