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70 lines
3.2 KiB
Go
70 lines
3.2 KiB
Go
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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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// D lexer. https://dlang.org/spec/lex.html
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var D = internal.Register(MustNewLexer(
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&Config{
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Name: "D",
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Aliases: []string{"d"},
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Filenames: []string{"*.d", "*.di"},
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MimeTypes: []string{"text/x-d"},
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EnsureNL: true,
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},
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Rules{
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"root": {
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{`[^\S\n]+`, Text, nil},
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// https://dlang.org/spec/lex.html#comment
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{`//.*?\n`, CommentSingle, nil},
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{`/\*.*?\*/`, CommentMultiline, nil},
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{`/\+.*?\+/`, CommentMultiline, nil},
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// https://dlang.org/spec/lex.html#keywords
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{`(asm|assert|body|break|case|cast|catch|continue|default|debug|delete|deprecated|do|else|finally|for|foreach|foreach_reverse|goto|if|in|invariant|is|macro|mixin|new|out|pragma|return|super|switch|this|throw|try|version|while|with)\b`, Keyword, nil},
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{`__(FILE|FILE_FULL_PATH|MODULE|LINE|FUNCTION|PRETTY_FUNCTION|DATE|EOF|TIME|TIMESTAMP|VENDOR|VERSION)__\b`, NameBuiltin, nil},
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{`__(traits|vector|parameters)\b`, NameBuiltin, nil},
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{`((?:(?:[^\W\d]|\$)[\w.\[\]$<>]*\s+)+?)((?:[^\W\d]|\$)[\w$]*)(\s*)(\()`, ByGroups(UsingSelf("root"), NameFunction, Text, Operator), nil},
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// https://dlang.org/spec/attribute.html#uda
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{`@[\w.]*`, NameDecorator, nil},
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{`(abstract|auto|alias|align|const|delegate|enum|export|final|function|inout|lazy|nothrow|override|package|private|protected|public|pure|static|synchronized|template|volatile|__gshared)\b`, KeywordDeclaration, nil},
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// https://dlang.org/spec/type.html#basic-data-types
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{`(void|bool|byte|ubyte|short|ushort|int|uint|long|ulong|cent|ucent|float|double|real|ifloat|idouble|ireal|cfloat|cdouble|creal|char|wchar|dchar|string|wstring|dstring)\b`, KeywordType, nil},
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{`(module)(\s+)`, ByGroups(KeywordNamespace, Text), Push("import")},
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{`(true|false|null)\b`, KeywordConstant, nil},
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{`(class|interface|struct|template|union)(\s+)`, ByGroups(KeywordDeclaration, Text), Push("class")},
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{`(import)(\s+)`, ByGroups(KeywordNamespace, Text), Push("import")},
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// https://dlang.org/spec/lex.html#string_literals
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// TODO support delimited strings
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{`[qr]?"(\\\\|\\"|[^"])*"[cwd]?`, LiteralString, nil},
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{"(`)([^`]*)(`)[cwd]?", LiteralString, nil},
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{`'\\.'|'[^\\]'|'\\u[0-9a-fA-F]{4}'`, LiteralStringChar, nil},
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{`(\.)((?:[^\W\d]|\$)[\w$]*)`, ByGroups(Operator, NameAttribute), nil},
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{`^\s*([^\W\d]|\$)[\w$]*:`, NameLabel, nil},
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// https://dlang.org/spec/lex.html#floatliteral
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{`([0-9][0-9_]*\.([0-9][0-9_]*)?|\.[0-9][0-9_]*)([eE][+\-]?[0-9][0-9_]*)?[fFL]?i?|[0-9][eE][+\-]?[0-9][0-9_]*[fFL]?|[0-9]([eE][+\-]?[0-9][0-9_]*)?[fFL]|0[xX]([0-9a-fA-F][0-9a-fA-F_]*\.?|([0-9a-fA-F][0-9a-fA-F_]*)?\.[0-9a-fA-F][0-9a-fA-F_]*)[pP][+\-]?[0-9][0-9_]*[fFL]?`, LiteralNumberFloat, nil},
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// https://dlang.org/spec/lex.html#integerliteral
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{`0[xX][0-9a-fA-F][0-9a-fA-F_]*[lL]?`, LiteralNumberHex, nil},
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{`0[bB][01][01_]*[lL]?`, LiteralNumberBin, nil},
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{`0[0-7_]+[lL]?`, LiteralNumberOct, nil},
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{`0|[1-9][0-9_]*[lL]?`, LiteralNumberInteger, nil},
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{`([~^*!%&\[\](){}<>|+=:;,./?-]|q{)`, Operator, nil},
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{`([^\W\d]|\$)[\w$]*`, Name, nil},
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{`\n`, Text, nil},
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},
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"class": {
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{`([^\W\d]|\$)[\w$]*`, NameClass, Pop(1)},
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},
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"import": {
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{`[\w.]+\*?`, NameNamespace, Pop(1)},
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},
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},
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))
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