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- package c
-
- import (
- . "github.com/alecthomas/chroma" // nolint
- "github.com/alecthomas/chroma/lexers/internal"
- )
-
- // C lexer.
- var C = internal.Register(MustNewLexer(
- &Config{
- Name: "C",
- Aliases: []string{"c"},
- Filenames: []string{"*.c", "*.h", "*.idc"},
- MimeTypes: []string{"text/x-chdr", "text/x-csrc"},
- },
- Rules{
- "whitespace": {
- {`^#if\s+0`, CommentPreproc, Push("if0")},
- {`^#`, CommentPreproc, Push("macro")},
- {`^(\s*(?:/[*].*?[*]/\s*)?)(#if\s+0)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("if0")},
- {`^(\s*(?:/[*].*?[*]/\s*)?)(#)`, ByGroups(UsingSelf("root"), CommentPreproc), Push("macro")},
- {`\n`, Text, nil},
- {`\s+`, Text, nil},
- {`\\\n`, Text, nil},
- {`//(\n|[\w\W]*?[^\\]\n)`, CommentSingle, nil},
- {`/(\\\n)?[*][\w\W]*?[*](\\\n)?/`, CommentMultiline, nil},
- {`/(\\\n)?[*][\w\W]*`, CommentMultiline, nil},
- },
- "statements": {
- {`(L?)(")`, ByGroups(LiteralStringAffix, LiteralString), Push("string")},
- {`(L?)(')(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])(')`, ByGroups(LiteralStringAffix, LiteralStringChar, LiteralStringChar, LiteralStringChar), nil},
- {`(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[LlUu]*`, LiteralNumberFloat, nil},
- {`(\d+\.\d*|\.\d+|\d+[fF])[fF]?`, LiteralNumberFloat, nil},
- {`0x[0-9a-fA-F]+[LlUu]*`, LiteralNumberHex, nil},
- {`0[0-7]+[LlUu]*`, LiteralNumberOct, nil},
- {`\d+[LlUu]*`, LiteralNumberInteger, nil},
- {`\*/`, Error, nil},
- {`[~!%^&*+=|?:<>/-]`, Operator, nil},
- {`[()\[\],.]`, Punctuation, nil},
- {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},
- {`(bool|int|long|float|short|double|char|unsigned|signed|void)\b`, KeywordType, nil},
- {Words(``, `\b`, `inline`, `_inline`, `__inline`, `naked`, `restrict`, `thread`, `typename`), KeywordReserved, nil},
- {`(__m(128i|128d|128|64))\b`, KeywordReserved, nil},
- {Words(`__`, `\b`, `asm`, `int8`, `based`, `except`, `int16`, `stdcall`, `cdecl`, `fastcall`, `int32`, `declspec`, `finally`, `int64`, `try`, `leave`, `wchar_t`, `w64`, `unaligned`, `raise`, `noop`, `identifier`, `forceinline`, `assume`), KeywordReserved, nil},
- {`(true|false|NULL)\b`, NameBuiltin, nil},
- {`([a-zA-Z_]\w*)(\s*)(:)(?!:)`, ByGroups(NameLabel, Text, Punctuation), nil},
- {`[a-zA-Z_]\w*`, Name, nil},
- },
- "root": {
- Include("whitespace"),
- {`((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;{]*)(\{)`, ByGroups(UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), Push("function")},
- {`((?:[\w*\s])+?(?:\s|[*]))([a-zA-Z_]\w*)(\s*\([^;]*?\))([^;]*)(;)`, ByGroups(UsingSelf("root"), NameFunction, UsingSelf("root"), UsingSelf("root"), Punctuation), nil},
- Default(Push("statement")),
- },
- "statement": {
- Include("whitespace"),
- Include("statements"),
- {`[{}]`, Punctuation, nil},
- {`;`, Punctuation, Pop(1)},
- },
- "function": {
- Include("whitespace"),
- Include("statements"),
- {`;`, Punctuation, nil},
- {`\{`, Punctuation, Push()},
- {`\}`, Punctuation, Pop(1)},
- },
- "string": {
- {`"`, LiteralString, Pop(1)},
- {`\\([\\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},
- {`[^\\"\n]+`, LiteralString, nil},
- {`\\\n`, LiteralString, nil},
- {`\\`, LiteralString, nil},
- },
- "macro": {
- {`(include)(\s*(?:/[*].*?[*]/\s*)?)([^\n]+)`, ByGroups(CommentPreproc, Text, CommentPreprocFile), nil},
- {`[^/\n]+`, CommentPreproc, nil},
- {`/[*](.|\n)*?[*]/`, CommentMultiline, nil},
- {`//.*?\n`, CommentSingle, Pop(1)},
- {`/`, CommentPreproc, nil},
- {`(?<=\\)\n`, CommentPreproc, nil},
- {`\n`, CommentPreproc, Pop(1)},
- },
- "if0": {
- {`^\s*#if.*?(?<!\\)\n`, CommentPreproc, Push()},
- {`^\s*#el(?:se|if).*\n`, CommentPreproc, Pop(1)},
- {`^\s*#endif.*?(?<!\\)\n`, CommentPreproc, Pop(1)},
- {`.*?\n`, Comment, nil},
- },
- },
- ))
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