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59 lines
2.0 KiB
59 lines
2.0 KiB
package g
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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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// Gas lexer.
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var Gas = internal.Register(MustNewLazyLexer(
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&Config{
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Name: "GAS",
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Aliases: []string{"gas", "asm"},
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Filenames: []string{"*.s", "*.S"},
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MimeTypes: []string{"text/x-gas"},
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},
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gasRules,
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))
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func gasRules() Rules {
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return Rules{
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"root": {
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Include("whitespace"),
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{`(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+):`, NameLabel, nil},
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{`\.(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+)`, NameAttribute, Push("directive-args")},
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{`lock|rep(n?z)?|data\d+`, NameAttribute, nil},
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{`(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+)`, NameFunction, Push("instruction-args")},
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{`[\r\n]+`, Text, nil},
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},
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"directive-args": {
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{`(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+)`, NameConstant, nil},
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{`"(\\"|[^"])*"`, LiteralString, nil},
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{`@(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+)`, NameAttribute, nil},
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{`(?:0[xX][a-zA-Z0-9]+|\d+)`, LiteralNumberInteger, nil},
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{`[\r\n]+`, Text, Pop(1)},
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Include("punctuation"),
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Include("whitespace"),
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},
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"instruction-args": {
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{`([a-z0-9]+)( )(<)((?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+))(>)`, ByGroups(LiteralNumberHex, Text, Punctuation, NameConstant, Punctuation), nil},
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{`([a-z0-9]+)( )(<)((?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+))([-+])((?:0[xX][a-zA-Z0-9]+|\d+))(>)`, ByGroups(LiteralNumberHex, Text, Punctuation, NameConstant, Punctuation, LiteralNumberInteger, Punctuation), nil},
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{`(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+)`, NameConstant, nil},
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{`(?:0[xX][a-zA-Z0-9]+|\d+)`, LiteralNumberInteger, nil},
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{`%(?:[a-zA-Z$_][\w$.@-]*|\.[\w$.@-]+)`, NameVariable, nil},
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{`$(?:0[xX][a-zA-Z0-9]+|\d+)`, LiteralNumberInteger, nil},
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{`$'(.|\\')'`, LiteralStringChar, nil},
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{`[\r\n]+`, Text, Pop(1)},
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Include("punctuation"),
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Include("whitespace"),
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},
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"whitespace": {
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{`\n`, Text, nil},
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{`\s+`, Text, nil},
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{`[;#].*?\n`, Comment, nil},
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},
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"punctuation": {
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{`[-*,.()\[\]!:]+`, Punctuation, nil},
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},
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}
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}
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