2017-06-02 00:17:21 +10:00
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package lexers
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import (
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. "github.com/alecthomas/chroma" // nolint: golint
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)
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// Go lexer.
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var Go = Register(NewLexer(
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&Config{
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Name: "Go",
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Filenames: []string{"*.go"},
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Aliases: []string{"go", "golang"},
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MimeTypes: []string{"text/x-gosrc"},
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},
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2017-06-02 11:42:52 +10:00
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// TODO: Convert this Lexer to use text/scanner
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2017-06-02 00:17:21 +10:00
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Rules{
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`root`: []Rule{
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{`\n`, Text, nil},
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{`\s+`, Text, nil},
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{`\\\n`, Text, nil}, // line continuations
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{`//(.*?)\n`, CommentSingle, nil},
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{`/(\\\n)?[*](.|\n)*?[*](\\\n)?/`, CommentMultiline, nil},
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{`(import|package)\b`, KeywordNamespace, nil},
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{`(var|func|struct|map|chan|type|interface|const)\b`,
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KeywordDeclaration, nil},
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{Words(`break`, `default`, `select`, `case`, `defer`, `go`,
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`else`, `goto`, `switch`, `fallthrough`, `if`, `range`,
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`continue`, `for`, `return`), Keyword, nil},
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{`(true|false|iota|nil)\b`, KeywordConstant, nil},
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{Words(`uint`, `uint8`, `uint16`, `uint32`, `uint64`,
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`int`, `int8`, `int16`, `int32`, `int64`,
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`float`, `float32`, `float64`,
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`complex64`, `complex128`, `byte`, `rune`,
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`string`, `bool`, `erro`, `uintpt`,
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`print`, `println`, `panic`, `recove`, `close`, `complex`,
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`real`, `imag`, `len`, `cap`, `append`, `copy`, `delete`,
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`new`, `make`),
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KeywordType, nil},
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// imaginary_lit
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{`\d+i`, LiteralNumber, nil},
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{`\d+\.\d*([Ee][-+]\d+)?i`, LiteralNumber, nil},
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{`\.\d+([Ee][-+]\d+)?i`, LiteralNumber, nil},
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{`\d+[Ee][-+]\d+i`, LiteralNumber, nil},
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// float_lit
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{`\d+(\.\d+[eE][+\-]?\d+|\.\d*|[eE][+\-]?\d+)`, LiteralNumberFloat, nil},
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{`\.\d+([eE][+\-]?\d+)?`, LiteralNumberFloat, nil},
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// int_lit
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// -- octal_lit
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{`0[0-7]+`, LiteralNumberOct, nil},
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// -- hex_lit
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{`0[xX][0-9a-fA-F]+`, LiteralNumberHex, nil},
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// -- decimal_lit
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{`(0|[1-9][0-9]*)`, LiteralNumberInteger, nil},
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// char_lit
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{`'(\\['"\\abfnrtv]|\\x[0-9a-fA-F]{2}|\\[0-7]{1,3}|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|[^\\])'`, LiteralStringChar, nil},
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// StringLiteral
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// -- raw_string_lit
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{"`[^`]*`", String, nil},
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// -- interpreted_string_lit
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{`"(\\\\|\\"|[^"])*"`, String, nil},
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// Tokens
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{`(<<=|>>=|<<|>>|<=|>=|&\^=|&\^|\+=|-=|\*=|/=|%=|&=|\|=|&&|\|\||<-|\+\+|--|==|!=|:=|\.\.\.|[+\-*/%&])`, Operator, nil},
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{`[|^<>=!()\[\]{}.,;:]`, Punctuation, nil},
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// identifier
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{`[^\W\d]\w*`, NameOther, nil},
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},
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},
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))
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