1package d
2
3import (
4 . "github.com/alecthomas/chroma" // nolint
5 "github.com/alecthomas/chroma/lexers/internal"
6)
7
8// Dart lexer.
9var Dart = internal.Register(MustNewLexer(
10 &Config{
11 Name: "Dart",
12 Aliases: []string{"dart"},
13 Filenames: []string{"*.dart"},
14 MimeTypes: []string{"text/x-dart"},
15 DotAll: true,
16 },
17 Rules{
18 "root": {
19 Include("string_literal"),
20 {`#!(.*?)$`, CommentPreproc, nil},
21 {`\b(import|export)\b`, Keyword, Push("import_decl")},
22 {`\b(library|source|part of|part)\b`, Keyword, nil},
23 {`[^\S\n]+`, Text, nil},
24 {`//.*?\n`, CommentSingle, nil},
25 {`/\*.*?\*/`, CommentMultiline, nil},
26 {`\b(class)\b(\s+)`, ByGroups(KeywordDeclaration, Text), Push("class")},
27 {`\b(assert|break|case|catch|continue|default|do|else|finally|for|if|in|is|new|return|super|switch|this|throw|try|while)\b`, Keyword, nil},
28 {`\b(abstract|async|await|const|extends|factory|final|get|implements|native|operator|set|static|sync|typedef|var|with|yield)\b`, KeywordDeclaration, nil},
29 {`\b(bool|double|dynamic|int|num|Object|String|void)\b`, KeywordType, nil},
30 {`\b(false|null|true)\b`, KeywordConstant, nil},
31 {`[~!%^&*+=|?:<>/-]|as\b`, Operator, nil},
32 {`[a-zA-Z_$]\w*:`, NameLabel, nil},
33 {`[a-zA-Z_$]\w*`, Name, nil},
34 {`[(){}\[\],.;]`, Punctuation, nil},
35 {`0[xX][0-9a-fA-F]+`, LiteralNumberHex, nil},
36 {`\d+(\.\d*)?([eE][+-]?\d+)?`, LiteralNumber, nil},
37 {`\.\d+([eE][+-]?\d+)?`, LiteralNumber, nil},
38 {`\n`, Text, nil},
39 },
40 "class": {
41 {`[a-zA-Z_$]\w*`, NameClass, Pop(1)},
42 },
43 "import_decl": {
44 Include("string_literal"),
45 {`\s+`, Text, nil},
46 {`\b(as|show|hide)\b`, Keyword, nil},
47 {`[a-zA-Z_$]\w*`, Name, nil},
48 {`\,`, Punctuation, nil},
49 {`\;`, Punctuation, Pop(1)},
50 },
51 "string_literal": {
52 {`r"""([\w\W]*?)"""`, LiteralStringDouble, nil},
53 {`r'''([\w\W]*?)'''`, LiteralStringSingle, nil},
54 {`r"(.*?)"`, LiteralStringDouble, nil},
55 {`r'(.*?)'`, LiteralStringSingle, nil},
56 {`"""`, LiteralStringDouble, Push("string_double_multiline")},
57 {`'''`, LiteralStringSingle, Push("string_single_multiline")},
58 {`"`, LiteralStringDouble, Push("string_double")},
59 {`'`, LiteralStringSingle, Push("string_single")},
60 },
61 "string_common": {
62 {`\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4}|u\{[0-9A-Fa-f]*\}|[a-z'\"$\\])`, LiteralStringEscape, nil},
63 {`(\$)([a-zA-Z_]\w*)`, ByGroups(LiteralStringInterpol, Name), nil},
64 {`(\$\{)(.*?)(\})`, ByGroups(LiteralStringInterpol, UsingSelf("root"), LiteralStringInterpol), nil},
65 },
66 "string_double": {
67 {`"`, LiteralStringDouble, Pop(1)},
68 {`[^"$\\\n]+`, LiteralStringDouble, nil},
69 Include("string_common"),
70 {`\$+`, LiteralStringDouble, nil},
71 },
72 "string_double_multiline": {
73 {`"""`, LiteralStringDouble, Pop(1)},
74 {`[^"$\\]+`, LiteralStringDouble, nil},
75 Include("string_common"),
76 {`(\$|\")+`, LiteralStringDouble, nil},
77 },
78 "string_single": {
79 {`'`, LiteralStringSingle, Pop(1)},
80 {`[^'$\\\n]+`, LiteralStringSingle, nil},
81 Include("string_common"),
82 {`\$+`, LiteralStringSingle, nil},
83 },
84 "string_single_multiline": {
85 {`'''`, LiteralStringSingle, Pop(1)},
86 {`[^\'$\\]+`, LiteralStringSingle, nil},
87 Include("string_common"),
88 {`(\$|\')+`, LiteralStringSingle, nil},
89 },
90 },
91))