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106 lines
5.6 KiB
106 lines
5.6 KiB
package c
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import (
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. "github.com/alecthomas/chroma" // nolint
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"github.com/alecthomas/chroma/lexers/internal"
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)
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// CPP lexer.
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var CPP = internal.Register(MustNewLexer(
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&Config{
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Name: "C++",
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Aliases: []string{"cpp", "c++"},
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Filenames: []string{"*.cpp", "*.hpp", "*.c++", "*.h++", "*.cc", "*.hh", "*.cxx", "*.hxx", "*.C", "*.H", "*.cp", "*.CPP"},
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MimeTypes: []string{"text/x-c++hdr", "text/x-c++src"},
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EnsureNL: true,
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},
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Rules{
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"statements": {
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{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},
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{`(enum)\b(\s+)(class)\b(\s*)`, ByGroups(Keyword, Text, Keyword, Text), Push("classname")},
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{`(class|struct|enum|union)\b(\s*)`, ByGroups(Keyword, Text), Push("classname")},
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{`\[\[.+\]\]`, NameAttribute, nil},
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{`(R)(")([^\\()\s]{,16})(\()((?:.|\n)*?)(\)\3)(")`, ByGroups(LiteralStringAffix, LiteralString, LiteralStringDelimiter, LiteralStringDelimiter, LiteralString, LiteralStringDelimiter, LiteralString), nil},
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{`(u8|u|U)(")`, ByGroups(LiteralStringAffix, LiteralString), Push("string")},
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{`(L?)(")`, ByGroups(LiteralStringAffix, LiteralString), Push("string")},
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{`(L?)(')(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])(')`, ByGroups(LiteralStringAffix, LiteralStringChar, LiteralStringChar, LiteralStringChar), nil},
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{`(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*`, LiteralNumberFloat, nil},
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{`(\d+\.\d*|\.\d+|\d+[fF])[fF]?`, LiteralNumberFloat, nil},
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{`0[xX]([0-9A-Fa-f]('?[0-9A-Fa-f]+)*)[LlUu]*`, LiteralNumberHex, nil},
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{`0('?[0-7]+)+[LlUu]*`, LiteralNumberOct, nil},
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{`0[Bb][01]('?[01]+)*[LlUu]*`, LiteralNumberBin, nil},
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{`[0-9]('?[0-9]+)*[LlUu]*`, LiteralNumberInteger, nil},
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{`\*/`, Error, nil},
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{`[~!%^&*+=|?:<>/-]`, Operator, nil},
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{`[()\[\],.]`, Punctuation, nil},
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{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},
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{`(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},
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{Words(``, `\b`, `inline`, `_inline`, `__inline`, `naked`, `restrict`, `thread`, `typename`), KeywordReserved, nil},
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{`(__m(128i|128d|128|64))\b`, KeywordReserved, nil},
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{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},
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{`(true|false|NULL)\b`, NameBuiltin, nil},
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{`([a-zA-Z_]\w*)(\s*)(:)(?!:)`, ByGroups(NameLabel, Text, Punctuation), nil},
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{`[a-zA-Z_]\w*`, Name, nil},
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},
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"root": {
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Include("whitespace"),
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{`((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;{]*)(\{)`, ByGroups(UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), Push("function")},
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{`((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;]*)(;)`, ByGroups(UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), nil},
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Default(Push("statement")),
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{Words(`__`, `\b`, `virtual_inheritance`, `uuidof`, `super`, `single_inheritance`, `multiple_inheritance`, `interface`, `event`), KeywordReserved, nil},
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{`__(offload|blockingoffload|outer)\b`, KeywordPseudo, nil},
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},
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"classname": {
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{`(\[\[.+\]\])(\s*)`, ByGroups(NameAttribute, Text), nil},
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{`[a-zA-Z_]\w*`, NameClass, Pop(1)},
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{`\s*(?=[>{])`, Text, Pop(1)},
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},
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"whitespace": {
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{`^#if\s+0`, CommentPreproc, Push("if0")},
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{`^#`, CommentPreproc, Push("macro")},
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{`^(\s*(?:/[*].*?[*]/\s*)?)(#if\s+0)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("if0")},
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{`^(\s*(?:/[*].*?[*]/\s*)?)(#)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("macro")},
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{`\n`, Text, nil},
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{`\s+`, Text, nil},
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{`\\\n`, Text, nil},
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{`//(\n|[\w\W]*?[^\\]\n)`, CommentSingle, nil},
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{`/(\\\n)?[*][\w\W]*?[*](\\\n)?/`, CommentMultiline, nil},
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{`/(\\\n)?[*][\w\W]*`, CommentMultiline, nil},
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},
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"statement": {
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Include("whitespace"),
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Include("statements"),
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{`[{]`, Punctuation, Push("root")},
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{`[;}]`, Punctuation, Pop(1)},
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},
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"function": {
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Include("whitespace"),
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Include("statements"),
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{`;`, Punctuation, nil},
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{`\{`, Punctuation, Push()},
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{`\}`, Punctuation, Pop(1)},
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},
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"string": {
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{`"`, LiteralString, Pop(1)},
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{`\\([\\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},
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{`[^\\"\n]+`, LiteralString, nil},
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{`\\\n`, LiteralString, nil},
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{`\\`, LiteralString, nil},
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},
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"macro": {
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{`(include)(\s*(?:/[*].*?[*]/\s*)?)([^\n]+)`, ByGroups(CommentPreproc, Text, CommentPreprocFile), nil},
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{`[^/\n]+`, CommentPreproc, nil},
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{`/[*](.|\n)*?[*]/`, CommentMultiline, nil},
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{`//.*?\n`, CommentSingle, Pop(1)},
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{`/`, CommentPreproc, nil},
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{`(?<=\\)\n`, CommentPreproc, nil},
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{`\n`, CommentPreproc, Pop(1)},
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},
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"if0": {
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{`^\s*#if.*?(?<!\\)\n`, CommentPreproc, Push()},
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{`^\s*#el(?:se|if).*\n`, CommentPreproc, Pop(1)},
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{`^\s*#endif.*?(?<!\\)\n`, CommentPreproc, Pop(1)},
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{`.*?\n`, Comment, nil},
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},
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},
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))
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