mirror of https://github.com/cheat/cheat.git
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
package l
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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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// Lua lexer.
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var Lua = internal.Register(MustNewLazyLexer(
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&Config{
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Name: "Lua",
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Aliases: []string{"lua"},
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Filenames: []string{"*.lua", "*.wlua"},
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MimeTypes: []string{"text/x-lua", "application/x-lua"},
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},
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luaRules,
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))
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func luaRules() Rules {
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return Rules{
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"root": {
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{`#!.*`, CommentPreproc, nil},
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Default(Push("base")),
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},
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"ws": {
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{`(?:--\[(=*)\[[\w\W]*?\](\1)\])`, CommentMultiline, nil},
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{`(?:--.*$)`, CommentSingle, nil},
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{`(?:\s+)`, Text, nil},
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},
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"base": {
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Include("ws"),
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{`(?i)0x[\da-f]*(\.[\da-f]*)?(p[+-]?\d+)?`, LiteralNumberHex, nil},
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{`(?i)(\d*\.\d+|\d+\.\d*)(e[+-]?\d+)?`, LiteralNumberFloat, nil},
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{`(?i)\d+e[+-]?\d+`, LiteralNumberFloat, nil},
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{`\d+`, LiteralNumberInteger, nil},
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{`(?s)\[(=*)\[.*?\]\1\]`, LiteralString, nil},
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{`::`, Punctuation, Push("label")},
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{`\.{3}`, Punctuation, nil},
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{`[=<>|~&+\-*/%#^]+|\.\.`, Operator, nil},
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{`[\[\]{}().,:;]`, Punctuation, nil},
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{`(and|or|not)\b`, OperatorWord, nil},
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{`(break|do|else|elseif|end|for|if|in|repeat|return|then|until|while)\b`, KeywordReserved, nil},
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{`goto\b`, KeywordReserved, Push("goto")},
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{`(local)\b`, KeywordDeclaration, nil},
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{`(true|false|nil)\b`, KeywordConstant, nil},
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{`(function)\b`, KeywordReserved, Push("funcname")},
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{`[A-Za-z_]\w*(\.[A-Za-z_]\w*)?`, Name, nil},
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{`'`, LiteralStringSingle, Combined("stringescape", "sqs")},
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{`"`, LiteralStringDouble, Combined("stringescape", "dqs")},
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},
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"funcname": {
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Include("ws"),
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{`[.:]`, Punctuation, nil},
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{`(?:[^\W\d]\w*)(?=(?:(?:--\[(=*)\[[\w\W]*?\](\2)\])|(?:--.*$)|(?:\s+))*[.:])`, NameClass, nil},
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{`(?:[^\W\d]\w*)`, NameFunction, Pop(1)},
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{`\(`, Punctuation, Pop(1)},
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},
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"goto": {
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Include("ws"),
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{`(?:[^\W\d]\w*)`, NameLabel, Pop(1)},
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},
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"label": {
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Include("ws"),
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{`::`, Punctuation, Pop(1)},
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{`(?:[^\W\d]\w*)`, NameLabel, nil},
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},
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"stringescape": {
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{`\\([abfnrtv\\"\']|[\r\n]{1,2}|z\s*|x[0-9a-fA-F]{2}|\d{1,3}|u\{[0-9a-fA-F]+\})`, LiteralStringEscape, nil},
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},
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"sqs": {
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{`'`, LiteralStringSingle, Pop(1)},
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{`[^\\']+`, LiteralStringSingle, nil},
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},
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"dqs": {
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{`"`, LiteralStringDouble, Pop(1)},
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{`[^\\"]+`, LiteralStringDouble, nil},
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},
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}
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}
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