turtle.go

Documentation: github.com/alecthomas/chroma/lexers/t

     1  package t
     2  
     3  import (
     4  	. "github.com/alecthomas/chroma" // nolint
     5  	"github.com/alecthomas/chroma/lexers/internal"
     6  )
     7  
     8  // Turtle lexer.
     9  var Turtle = internal.Register(MustNewLazyLexer(
    10  	&Config{
    11  		Name:            "Turtle",
    12  		Aliases:         []string{"turtle"},
    13  		Filenames:       []string{"*.ttl"},
    14  		MimeTypes:       []string{"text/turtle", "application/x-turtle"},
    15  		NotMultiline:    true,
    16  		CaseInsensitive: true,
    17  	},
    18  	turtleRules,
    19  ))
    20  
    21  func turtleRules() Rules {
    22  	return Rules{
    23  		"root": {
    24  			{`\s+`, TextWhitespace, nil},
    25  			{"(@base|BASE)(\\s+)(<[^<>\"{}|^`\\\\\\x00-\\x20]*>)(\\s*)(\\.?)", ByGroups(Keyword, TextWhitespace, NameVariable, TextWhitespace, Punctuation), nil},
    26  			{"(@prefix|PREFIX)(\\s+)((?:[a-z][\\w-]*)?\\:)(\\s+)(<[^<>\"{}|^`\\\\\\x00-\\x20]*>)(\\s*)(\\.?)", ByGroups(Keyword, TextWhitespace, NameNamespace, TextWhitespace, NameVariable, TextWhitespace, Punctuation), nil},
    27  			{`(?<=\s)a(?=\s)`, KeywordType, nil},
    28  			{"(<[^<>\"{}|^`\\\\\\x00-\\x20]*>)", NameVariable, nil},
    29  			{`((?:[a-z][\w-]*)?\:)([a-z][\w-]*)`, ByGroups(NameNamespace, NameTag), nil},
    30  			{`#[^\n]+`, Comment, nil},
    31  			{`\b(true|false)\b`, Literal, nil},
    32  			{`[+\-]?\d*\.\d+`, LiteralNumberFloat, nil},
    33  			{`[+\-]?\d*(:?\.\d+)?E[+\-]?\d+`, LiteralNumberFloat, nil},
    34  			{`[+\-]?\d+`, LiteralNumberInteger, nil},
    35  			{`[\[\](){}.;,:^]`, Punctuation, nil},
    36  			{`"""`, LiteralString, Push("triple-double-quoted-string")},
    37  			{`"`, LiteralString, Push("single-double-quoted-string")},
    38  			{`'''`, LiteralString, Push("triple-single-quoted-string")},
    39  			{`'`, LiteralString, Push("single-single-quoted-string")},
    40  		},
    41  		"triple-double-quoted-string": {
    42  			{`"""`, LiteralString, Push("end-of-string")},
    43  			{`[^\\]+`, LiteralString, nil},
    44  			{`\\`, LiteralString, Push("string-escape")},
    45  		},
    46  		"single-double-quoted-string": {
    47  			{`"`, LiteralString, Push("end-of-string")},
    48  			{`[^"\\\n]+`, LiteralString, nil},
    49  			{`\\`, LiteralString, Push("string-escape")},
    50  		},
    51  		"triple-single-quoted-string": {
    52  			{`'''`, LiteralString, Push("end-of-string")},
    53  			{`[^\\]+`, LiteralString, nil},
    54  			{`\\`, LiteralString, Push("string-escape")},
    55  		},
    56  		"single-single-quoted-string": {
    57  			{`'`, LiteralString, Push("end-of-string")},
    58  			{`[^'\\\n]+`, LiteralString, nil},
    59  			{`\\`, LiteralString, Push("string-escape")},
    60  		},
    61  		"string-escape": {
    62  			{`.`, LiteralString, Pop(1)},
    63  		},
    64  		"end-of-string": {
    65  			{`(@)([a-z]+(:?-[a-z0-9]+)*)`, ByGroups(Operator, GenericEmph, GenericEmph), Pop(2)},
    66  			{"(\\^\\^)(<[^<>\"{}|^`\\\\\\x00-\\x20]*>)", ByGroups(Operator, GenericEmph), Pop(2)},
    67  			{`(\^\^)((?:[a-z][\w-]*)?\:)([a-z][\w-]*)`, ByGroups(Operator, GenericEmph, GenericEmph), Pop(2)},
    68  			Default(Pop(2)),
    69  		},
    70  	}
    71  }
    72
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