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92 lines
3.2 KiB
92 lines
3.2 KiB
4 years ago
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package d
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import (
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. "github.com/alecthomas/chroma" // nolint
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"github.com/alecthomas/chroma/lexers/internal"
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)
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// Dart lexer.
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var Dart = internal.Register(MustNewLexer(
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&Config{
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Name: "Dart",
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Aliases: []string{"dart"},
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Filenames: []string{"*.dart"},
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MimeTypes: []string{"text/x-dart"},
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DotAll: true,
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},
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Rules{
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"root": {
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Include("string_literal"),
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{`#!(.*?)$`, CommentPreproc, nil},
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{`\b(import|export)\b`, Keyword, Push("import_decl")},
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{`\b(library|source|part of|part)\b`, Keyword, nil},
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{`[^\S\n]+`, Text, nil},
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{`//.*?\n`, CommentSingle, nil},
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{`/\*.*?\*/`, CommentMultiline, nil},
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{`\b(class)\b(\s+)`, ByGroups(KeywordDeclaration, Text), Push("class")},
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{`\b(assert|break|case|catch|continue|default|do|else|finally|for|if|in|is|new|return|super|switch|this|throw|try|while)\b`, Keyword, nil},
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{`\b(abstract|async|await|const|extends|factory|final|get|implements|native|operator|set|static|sync|typedef|var|with|yield)\b`, KeywordDeclaration, nil},
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{`\b(bool|double|dynamic|int|num|Object|String|void)\b`, KeywordType, nil},
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{`\b(false|null|true)\b`, KeywordConstant, nil},
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{`[~!%^&*+=|?:<>/-]|as\b`, Operator, nil},
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{`[a-zA-Z_$]\w*:`, NameLabel, nil},
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{`[a-zA-Z_$]\w*`, Name, nil},
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{`[(){}\[\],.;]`, Punctuation, nil},
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{`0[xX][0-9a-fA-F]+`, LiteralNumberHex, nil},
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{`\d+(\.\d*)?([eE][+-]?\d+)?`, LiteralNumber, nil},
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{`\.\d+([eE][+-]?\d+)?`, LiteralNumber, nil},
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{`\n`, Text, nil},
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},
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"class": {
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{`[a-zA-Z_$]\w*`, NameClass, Pop(1)},
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},
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"import_decl": {
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Include("string_literal"),
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{`\s+`, Text, nil},
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{`\b(as|show|hide)\b`, Keyword, nil},
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{`[a-zA-Z_$]\w*`, Name, nil},
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{`\,`, Punctuation, nil},
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{`\;`, Punctuation, Pop(1)},
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},
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"string_literal": {
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{`r"""([\w\W]*?)"""`, LiteralStringDouble, nil},
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{`r'''([\w\W]*?)'''`, LiteralStringSingle, nil},
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{`r"(.*?)"`, LiteralStringDouble, nil},
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{`r'(.*?)'`, LiteralStringSingle, nil},
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{`"""`, LiteralStringDouble, Push("string_double_multiline")},
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{`'''`, LiteralStringSingle, Push("string_single_multiline")},
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{`"`, LiteralStringDouble, Push("string_double")},
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{`'`, LiteralStringSingle, Push("string_single")},
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},
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"string_common": {
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{`\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|u\{[0-9A-Fa-f]*\}|[a-z'\"$\\])`, LiteralStringEscape, nil},
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{`(\$)([a-zA-Z_]\w*)`, ByGroups(LiteralStringInterpol, Name), nil},
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{`(\$\{)(.*?)(\})`, ByGroups(LiteralStringInterpol, UsingSelf("root"), LiteralStringInterpol), nil},
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},
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"string_double": {
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{`"`, LiteralStringDouble, Pop(1)},
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{`[^"$\\\n]+`, LiteralStringDouble, nil},
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Include("string_common"),
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{`\$+`, LiteralStringDouble, nil},
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},
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"string_double_multiline": {
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{`"""`, LiteralStringDouble, Pop(1)},
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{`[^"$\\]+`, LiteralStringDouble, nil},
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Include("string_common"),
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{`(\$|\")+`, LiteralStringDouble, nil},
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},
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"string_single": {
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{`'`, LiteralStringSingle, Pop(1)},
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{`[^'$\\\n]+`, LiteralStringSingle, nil},
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Include("string_common"),
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{`\$+`, LiteralStringSingle, nil},
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},
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"string_single_multiline": {
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{`'''`, LiteralStringSingle, Pop(1)},
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{`[^\'$\\]+`, LiteralStringSingle, nil},
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Include("string_common"),
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{`(\$|\')+`, LiteralStringSingle, nil},
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},
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},
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))
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