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Original file line number | Diff line number | Diff line change |
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package lexers | ||
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import ( | ||
"strings" | ||
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. "github.com/alecthomas/chroma" // nolint | ||
) | ||
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// Restructuredtext lexer. | ||
var Restructuredtext = Register(MustNewLexer( | ||
&Config{ | ||
Name: "reStructuredText", | ||
Aliases: []string{"rst", "rest", "restructuredtext"}, | ||
Filenames: []string{"*.rst", "*.rest"}, | ||
MimeTypes: []string{"text/x-rst", "text/prs.fallenstein.rst"}, | ||
}, | ||
Rules{ | ||
"root": { | ||
{"^(=+|-+|`+|:+|\\.+|\\'+|\"+|~+|\\^+|_+|\\*+|\\++|#+)([ \\t]*\\n)(.+)(\\n)(\\1)(\\n)", ByGroups(GenericHeading, Text, GenericHeading, Text, GenericHeading, Text), nil}, | ||
{"^(\\S.*)(\\n)(={3,}|-{3,}|`{3,}|:{3,}|\\.{3,}|\\'{3,}|\"{3,}|~{3,}|\\^{3,}|_{3,}|\\*{3,}|\\+{3,}|#{3,})(\\n)", ByGroups(GenericHeading, Text, GenericHeading, Text), nil}, | ||
{`^(\s*)([-*+])( .+\n(?:\1 .+\n)*)`, ByGroups(Text, LiteralNumber, UsingSelf("inline")), nil}, | ||
{`^(\s*)([0-9#ivxlcmIVXLCM]+\.)( .+\n(?:\1 .+\n)*)`, ByGroups(Text, LiteralNumber, UsingSelf("inline")), nil}, | ||
{`^(\s*)(\(?[0-9#ivxlcmIVXLCM]+\))( .+\n(?:\1 .+\n)*)`, ByGroups(Text, LiteralNumber, UsingSelf("inline")), nil}, | ||
{`^(\s*)([A-Z]+\.)( .+\n(?:\1 .+\n)+)`, ByGroups(Text, LiteralNumber, UsingSelf("inline")), nil}, | ||
{`^(\s*)(\(?[A-Za-z]+\))( .+\n(?:\1 .+\n)+)`, ByGroups(Text, LiteralNumber, UsingSelf("inline")), nil}, | ||
{`^(\s*)(\|)( .+\n(?:\| .+\n)*)`, ByGroups(Text, Operator, UsingSelf("inline")), nil}, | ||
{`^( *\.\.)(\s*)((?:source)?code(?:-block)?)(::)([ \t]*)([^\n]+)(\n[ \t]*\n)([ \t]+)(.*)(\n)((?:(?:\8.*|)\n)+)`, EmitterFunc(rstCodeBlock), nil}, | ||
{`^( *\.\.)(\s*)([\w:-]+?)(::)(?:([ \t]*)(.*))`, ByGroups(Punctuation, Text, OperatorWord, Punctuation, Text, UsingSelf("inline")), nil}, | ||
{`^( *\.\.)(\s*)(_(?:[^:\\]|\\.)+:)(.*?)$`, ByGroups(Punctuation, Text, NameTag, UsingSelf("inline")), nil}, | ||
{`^( *\.\.)(\s*)(\[.+\])(.*?)$`, ByGroups(Punctuation, Text, NameTag, UsingSelf("inline")), nil}, | ||
{`^( *\.\.)(\s*)(\|.+\|)(\s*)([\w:-]+?)(::)(?:([ \t]*)(.*))`, ByGroups(Punctuation, Text, NameTag, Text, OperatorWord, Punctuation, Text, UsingSelf("inline")), nil}, | ||
{`^ *\.\..*(\n( +.*\n|\n)+)?`, CommentPreproc, nil}, | ||
{`^( *)(:[a-zA-Z-]+:)(\s*)$`, ByGroups(Text, NameClass, Text), nil}, | ||
{`^( *)(:.*?:)([ \t]+)(.*?)$`, ByGroups(Text, NameClass, Text, NameFunction), nil}, | ||
{`^(\S.*(?<!::)\n)((?:(?: +.*)\n)+)`, ByGroups(UsingSelf("inline"), UsingSelf("inline")), nil}, | ||
{`(::)(\n[ \t]*\n)([ \t]+)(.*)(\n)((?:(?:\3.*|)\n)+)`, ByGroups(LiteralStringEscape, Text, LiteralString, LiteralString, Text, LiteralString), nil}, | ||
Include("inline"), | ||
}, | ||
"inline": { | ||
{`\\.`, Text, nil}, | ||
{"``", LiteralString, Push("literal")}, | ||
{"(`.+?)(<.+?>)(`__?)", ByGroups(LiteralString, LiteralStringInterpol, LiteralString), nil}, | ||
{"`.+?`__?", LiteralString, nil}, | ||
{"(`.+?`)(:[a-zA-Z0-9:-]+?:)?", ByGroups(NameVariable, NameAttribute), nil}, | ||
{"(:[a-zA-Z0-9:-]+?:)(`.+?`)", ByGroups(NameAttribute, NameVariable), nil}, | ||
{`\*\*.+?\*\*`, GenericStrong, nil}, | ||
{`\*.+?\*`, GenericEmph, nil}, | ||
{`\[.*?\]_`, LiteralString, nil}, | ||
{`<.+?>`, NameTag, nil}, | ||
{"[^\\\\\\n\\[*`:]+", Text, nil}, | ||
{`.`, Text, nil}, | ||
}, | ||
"literal": { | ||
{"[^`]+", LiteralString, nil}, | ||
{"``((?=$)|(?=[-/:.,; \\n\\x00\\\u2010\\\u2011\\\u2012\\\u2013\\\u2014\\\u00a0\\'\\\"\\)\\]\\}\\>\\\u2019\\\u201d\\\u00bb\\!\\?]))", LiteralString, Pop(1)}, | ||
{"`", LiteralString, nil}, | ||
}, | ||
}, | ||
)) | ||
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func rstCodeBlock(groups []string, lexer Lexer) Iterator { | ||
iterators := []Iterator{} | ||
tokens := []*Token{ | ||
{Punctuation, groups[1]}, | ||
{Text, groups[2]}, | ||
{OperatorWord, groups[3]}, | ||
{Punctuation, groups[4]}, | ||
{Text, groups[5]}, | ||
{Keyword, groups[6]}, | ||
{Text, groups[7]}, | ||
} | ||
code := strings.Join(groups[8:], "") | ||
lexer = Get(groups[6]) | ||
if lexer == nil { | ||
tokens = append(tokens, &Token{String, code}) | ||
iterators = append(iterators, Literator(tokens...)) | ||
} else { | ||
sub, err := lexer.Tokenise(nil, code) | ||
if err != nil { | ||
panic(err) | ||
} | ||
iterators = append(iterators, Literator(tokens...), sub) | ||
} | ||
return Concaterator(iterators...) | ||
} |