1package d
2
3import (
4 . "github.com/alecthomas/chroma" // nolint
5 "github.com/alecthomas/chroma/lexers/internal"
6)
7
8// D lexer. https://dlang.org/spec/lex.html
9var D = internal.Register(MustNewLexer(
10 &Config{
11 Name: "D",
12 Aliases: []string{"d"},
13 Filenames: []string{"*.d", "*.di"},
14 MimeTypes: []string{"text/x-d"},
15 EnsureNL: true,
16 },
17 Rules{
18 "root": {
19 {`[^\S\n]+`, Text, nil},
20
21 // https://dlang.org/spec/lex.html#comment
22 {`//.*?\n`, CommentSingle, nil},
23 {`/\*.*?\*/`, CommentMultiline, nil},
24 {`/\+.*?\+/`, CommentMultiline, nil},
25
26 // https://dlang.org/spec/lex.html#keywords
27 {`(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},
28 {`__(FILE|FILE_FULL_PATH|MODULE|LINE|FUNCTION|PRETTY_FUNCTION|DATE|EOF|TIME|TIMESTAMP|VENDOR|VERSION)__\b`, NameBuiltin, nil},
29 {`__(traits|vector|parameters)\b`, NameBuiltin, nil},
30 {`((?:(?:[^\W\d]|\$)[\w.\[\]$<>]*\s+)+?)((?:[^\W\d]|\$)[\w$]*)(\s*)(\()`, ByGroups(UsingSelf("root"), NameFunction, Text, Operator), nil},
31
32 // https://dlang.org/spec/attribute.html#uda
33 {`@[\w.]*`, NameDecorator, nil},
34 {`(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},
35
36 // https://dlang.org/spec/type.html#basic-data-types
37 {`(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},
38 {`(module)(\s+)`, ByGroups(KeywordNamespace, Text), Push("import")},
39 {`(true|false|null)\b`, KeywordConstant, nil},
40 {`(class|interface|struct|template|union)(\s+)`, ByGroups(KeywordDeclaration, Text), Push("class")},
41 {`(import)(\s+)`, ByGroups(KeywordNamespace, Text), Push("import")},
42
43 // https://dlang.org/spec/lex.html#string_literals
44 // TODO support delimited strings
45 {`[qr]?"(\\\\|\\"|[^"])*"[cwd]?`, LiteralString, nil},
46 {"(`)([^`]*)(`)[cwd]?", LiteralString, nil},
47 {`'\\.'|'[^\\]'|'\\u[0-9a-fA-F]{4}'`, LiteralStringChar, nil},
48 {`(\.)((?:[^\W\d]|\$)[\w$]*)`, ByGroups(Operator, NameAttribute), nil},
49 {`^\s*([^\W\d]|\$)[\w$]*:`, NameLabel, nil},
50
51 // https://dlang.org/spec/lex.html#floatliteral
52 {`([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},
53 // https://dlang.org/spec/lex.html#integerliteral
54 {`0[xX][0-9a-fA-F][0-9a-fA-F_]*[lL]?`, LiteralNumberHex, nil},
55 {`0[bB][01][01_]*[lL]?`, LiteralNumberBin, nil},
56 {`0[0-7_]+[lL]?`, LiteralNumberOct, nil},
57 {`0|[1-9][0-9_]*[lL]?`, LiteralNumberInteger, nil},
58 {`([~^*!%&\[\](){}<>|+=:;,./?-]|q{)`, Operator, nil},
59 {`([^\W\d]|\$)[\w$]*`, Name, nil},
60 {`\n`, Text, nil},
61 },
62 "class": {
63 {`([^\W\d]|\$)[\w$]*`, NameClass, Pop(1)},
64 },
65 "import": {
66 {`[\w.]+\*?`, NameNamespace, Pop(1)},
67 },
68 },
69))