twig.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  // Twig lexer.
     9  var Twig = internal.Register(MustNewLazyLexer(
    10  	&Config{
    11  		Name:      "Twig",
    12  		Aliases:   []string{"twig"},
    13  		Filenames: []string{},
    14  		MimeTypes: []string{"application/x-twig"},
    15  		DotAll:    true,
    16  	},
    17  	twigRules,
    18  ))
    19  
    20  func twigRules() Rules {
    21  	return Rules{
    22  		"root": {
    23  			{`[^{]+`, Other, nil},
    24  			{`\{\{`, CommentPreproc, Push("var")},
    25  			{`\{\#.*?\#\}`, Comment, nil},
    26  			{`(\{%)(-?\s*)(raw)(\s*-?)(%\})(.*?)(\{%)(-?\s*)(endraw)(\s*-?)(%\})`, ByGroups(CommentPreproc, Text, Keyword, Text, CommentPreproc, Other, CommentPreproc, Text, Keyword, Text, CommentPreproc), nil},
    27  			{`(\{%)(-?\s*)(verbatim)(\s*-?)(%\})(.*?)(\{%)(-?\s*)(endverbatim)(\s*-?)(%\})`, ByGroups(CommentPreproc, Text, Keyword, Text, CommentPreproc, Other, CommentPreproc, Text, Keyword, Text, CommentPreproc), nil},
    28  			{`(\{%)(-?\s*)(filter)(\s+)((?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*)`, ByGroups(CommentPreproc, Text, Keyword, Text, NameFunction), Push("tag")},
    29  			{`(\{%)(-?\s*)([a-zA-Z_]\w*)`, ByGroups(CommentPreproc, Text, Keyword), Push("tag")},
    30  			{`\{`, Other, nil},
    31  		},
    32  		"varnames": {
    33  			{`(\|)(\s*)((?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*)`, ByGroups(Operator, Text, NameFunction), nil},
    34  			{`(is)(\s+)(not)?(\s*)((?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*)`, ByGroups(Keyword, Text, Keyword, Text, NameFunction), nil},
    35  			{`(?i)(true|false|none|null)\b`, KeywordPseudo, nil},
    36  			{`(in|not|and|b-and|or|b-or|b-xor|isif|elseif|else|importconstant|defined|divisibleby|empty|even|iterable|odd|sameasmatches|starts\s+with|ends\s+with)\b`, Keyword, nil},
    37  			{`(loop|block|parent)\b`, NameBuiltin, nil},
    38  			{`(?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*`, NameVariable, nil},
    39  			{`\.(?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*`, NameVariable, nil},
    40  			{`\.[0-9]+`, LiteralNumber, nil},
    41  			{`:?"(\\\\|\\"|[^"])*"`, LiteralStringDouble, nil},
    42  			{`:?'(\\\\|\\'|[^'])*'`, LiteralStringSingle, nil},
    43  			{`([{}()\[\]+\-*/,:~%]|\.\.|\?|:|\*\*|\/\/|!=|[><=]=?)`, Operator, nil},
    44  			{`[0-9](\.[0-9]*)?(eE[+-][0-9])?[flFLdD]?|0[xX][0-9a-fA-F]+[Ll]?`, LiteralNumber, nil},
    45  		},
    46  		"var": {
    47  			{`\s+`, Text, nil},
    48  			{`(-?)(\}\})`, ByGroups(Text, CommentPreproc), Pop(1)},
    49  			Include("varnames"),
    50  		},
    51  		"tag": {
    52  			{`\s+`, Text, nil},
    53  			{`(-?)(%\})`, ByGroups(Text, CommentPreproc), Pop(1)},
    54  			Include("varnames"),
    55  			{`.`, Punctuation, nil},
    56  		},
    57  	}
    58  }
    59
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