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74 lines
3.1 KiB
74 lines
3.1 KiB
package j
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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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// Javascript lexer.
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var JavascriptRules = Rules{
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"commentsandwhitespace": {
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{`\s+`, Text, nil},
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{`<!--`, Comment, nil},
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{`//.*?\n`, CommentSingle, nil},
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{`/\*.*?\*/`, CommentMultiline, nil},
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},
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"slashstartsregex": {
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Include("commentsandwhitespace"),
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{`/(\\.|[^[/\\\n]|\[(\\.|[^\]\\\n])*])+/([gimuy]+\b|\B)`, LiteralStringRegex, Pop(1)},
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{`(?=/)`, Text, Push("#pop", "badregex")},
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Default(Pop(1)),
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},
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"badregex": {
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{`\n`, Text, Pop(1)},
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},
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"root": {
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{`\A#! ?/.*?\n`, CommentHashbang, nil},
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{`^(?=\s|/|<!--)`, Text, Push("slashstartsregex")},
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Include("commentsandwhitespace"),
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{`\d+(\.\d*|[eE][+\-]?\d+)`, LiteralNumberFloat, nil},
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{`0[bB][01]+`, LiteralNumberBin, nil},
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{`0[oO][0-7]+`, LiteralNumberOct, nil},
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{`0[xX][0-9a-fA-F]+`, LiteralNumberHex, nil},
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{`[0-9][0-9_]*`, LiteralNumberInteger, nil},
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{`\.\.\.|=>`, Punctuation, nil},
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{`\+\+|--|~|&&|\?|:|\|\||\\(?=\n)|(<<|>>>?|==?|!=?|[-<>+*%&|^/])=?`, Operator, Push("slashstartsregex")},
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{`[{(\[;,]`, Punctuation, Push("slashstartsregex")},
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{`[})\].]`, Punctuation, nil},
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{`(for|in|while|do|break|return|continue|switch|case|default|if|else|throw|try|catch|finally|new|delete|typeof|instanceof|void|yield|this|of)\b`, Keyword, Push("slashstartsregex")},
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{`(var|let|with|function)\b`, KeywordDeclaration, Push("slashstartsregex")},
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{`(abstract|async|await|boolean|byte|char|class|const|debugger|double|enum|export|extends|final|float|goto|implements|import|int|interface|long|native|package|private|protected|public|short|static|super|synchronized|throws|transient|volatile)\b`, KeywordReserved, nil},
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{`(true|false|null|NaN|Infinity|undefined)\b`, KeywordConstant, nil},
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{`(Array|Boolean|Date|Error|Function|Math|netscape|Number|Object|Packages|RegExp|String|Promise|Proxy|sun|decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|Error|eval|isFinite|isNaN|isSafeInteger|parseFloat|parseInt|document|this|window)\b`, NameBuiltin, nil},
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{`(?:[$_\p{L}\p{N}]|\\u[a-fA-F0-9]{4})(?:(?:[$\p{L}\p{N}]|\\u[a-fA-F0-9]{4}))*`, NameOther, nil},
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{`"(\\\\|\\"|[^"])*"`, LiteralStringDouble, nil},
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{`'(\\\\|\\'|[^'])*'`, LiteralStringSingle, nil},
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{"`", LiteralStringBacktick, Push("interp")},
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},
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"interp": {
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{"`", LiteralStringBacktick, Pop(1)},
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{`\\\\`, LiteralStringBacktick, nil},
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{"\\\\`", LiteralStringBacktick, nil},
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{"\\\\[^`\\\\]", LiteralStringBacktick, nil},
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{`\$\{`, LiteralStringInterpol, Push("interp-inside")},
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{`\$`, LiteralStringBacktick, nil},
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{"[^`\\\\$]+", LiteralStringBacktick, nil},
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},
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"interp-inside": {
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{`\}`, LiteralStringInterpol, Pop(1)},
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Include("root"),
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},
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}
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// Javascript lexer.
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var Javascript = internal.Register(MustNewLexer( // nolint: forbidigo
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&Config{
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Name: "JavaScript",
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Aliases: []string{"js", "javascript"},
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Filenames: []string{"*.js", "*.jsm", "*.mjs"},
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MimeTypes: []string{"application/javascript", "application/x-javascript", "text/x-javascript", "text/javascript"},
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DotAll: true,
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EnsureNL: true,
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},
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JavascriptRules,
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))
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