mirror of
https://github.com/alecthomas/chroma.git
synced 2025-02-07 13:08:18 +02:00
91 lines
4.3 KiB
Go
91 lines
4.3 KiB
Go
package lexers
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import (
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. "github.com/alecthomas/chroma" // nolint
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)
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// C lexer.
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var C = Register(NewLexer(
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&Config{
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Name: "C",
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Aliases: []string{"c"},
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Filenames: []string{"*.c", "*.h", "*.idc"},
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MimeTypes: []string{"text/x-chdr", "text/x-csrc"},
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},
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Rules{
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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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"statements": {
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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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{`0x[0-9a-fA-F]+[LlUu]*`, LiteralNumberHex, nil},
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{`0[0-7]+[LlUu]*`, LiteralNumberOct, nil},
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{`\d+[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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{`(?: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)\b`, Keyword, nil},
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{`(bool|int|long|float|short|double|char|unsigned|signed|void)\b`, KeywordType, nil},
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{`(?:inline|_inline|__inline|naked|restrict|thread|typename)\b`, KeywordReserved, nil},
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{`(__m(128i|128d|128|64))\b`, KeywordReserved, nil},
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{`__(?:asm|int8|based|except|int16|stdcall|cdecl|fastcall|int32|declspec|finally|int64|try|leave|wchar_t|w64|unaligned|raise|noop|identifier|forceinline|assume)\b`, 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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},
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"statement": {
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Include("whitespace"),
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Include("statements"),
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{`[{}]`, Punctuation, nil},
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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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