1package c
2
3import (
4 . "github.com/alecthomas/chroma" // nolint
5 "github.com/alecthomas/chroma/lexers/internal"
6)
7
8// Crystal lexer.
9var Crystal = internal.Register(MustNewLexer(
10 &Config{
11 Name: "Crystal",
12 Aliases: []string{"cr", "crystal"},
13 Filenames: []string{"*.cr"},
14 MimeTypes: []string{"text/x-crystal"},
15 DotAll: true,
16 },
17 Rules{
18 "root": {
19 {`#.*?$`, CommentSingle, nil},
20 {Words(``, `\b`, `abstract`, `asm`, `as`, `begin`, `break`, `case`, `do`, `else`, `elsif`, `end`, `ensure`, `extend`, `ifdef`, `if`, `include`, `instance_sizeof`, `next`, `of`, `pointerof`, `private`, `protected`, `rescue`, `return`, `require`, `sizeof`, `super`, `then`, `typeof`, `unless`, `until`, `when`, `while`, `with`, `yield`), Keyword, nil},
21 {Words(``, `\b`, `true`, `false`, `nil`), KeywordConstant, nil},
22 {`(module|lib)(\s+)([a-zA-Z_]\w*(?:::[a-zA-Z_]\w*)*)`, ByGroups(Keyword, Text, NameNamespace), nil},
23 {`(def|fun|macro)(\s+)((?:[a-zA-Z_]\w*::)*)`, ByGroups(Keyword, Text, NameNamespace), Push("funcname")},
24 {"def(?=[*%&^`~+-/\\[<>=])", Keyword, Push("funcname")},
25 {`(class|struct|union|type|alias|enum)(\s+)((?:[a-zA-Z_]\w*::)*)`, ByGroups(Keyword, Text, NameNamespace), Push("classname")},
26 {`(self|out|uninitialized)\b|(is_a|responds_to)\?`, KeywordPseudo, nil},
27 {Words(``, `\b`, `debugger`, `record`, `pp`, `assert_responds_to`, `spawn`, `parallel`, `getter`, `setter`, `property`, `delegate`, `def_hash`, `def_equals`, `def_equals_and_hash`, `forward_missing_to`), NameBuiltinPseudo, nil},
28 {`getter[!?]|property[!?]|__(DIR|FILE|LINE)__\b`, NameBuiltinPseudo, nil},
29 {Words(`(?<!\.)`, `\b`, `Object`, `Value`, `Struct`, `Reference`, `Proc`, `Class`, `Nil`, `Symbol`, `Enum`, `Void`, `Bool`, `Number`, `Int`, `Int8`, `Int16`, `Int32`, `Int64`, `UInt8`, `UInt16`, `UInt32`, `UInt64`, `Float`, `Float32`, `Float64`, `Char`, `String`, `Pointer`, `Slice`, `Range`, `Exception`, `Regex`, `Mutex`, `StaticArray`, `Array`, `Hash`, `Set`, `Tuple`, `Deque`, `Box`, `Process`, `File`, `Dir`, `Time`, `Channel`, `Concurrent`, `Scheduler`, `abort`, `at_exit`, `caller`, `delay`, `exit`, `fork`, `future`, `get_stack_top`, `gets`, `lazy`, `loop`, `main`, `p`, `print`, `printf`, `puts`, `raise`, `rand`, `read_line`, `sleep`, `sprintf`, `system`, `with_color`), NameBuiltin, nil},
30 {"(?<!\\w)(<<-?)([\"`\\']?)([a-zA-Z_]\\w*)(\\2)(.*?\\n)", StringHeredoc, nil},
31 {`(<<-?)("|\')()(\2)(.*?\n)`, StringHeredoc, nil},
32 {`__END__`, CommentPreproc, Push("end-part")},
33 {`(?:^|(?<=[=<>~!:])|(?<=(?:\s|;)when\s)|(?<=(?:\s|;)or\s)|(?<=(?:\s|;)and\s)|(?<=\.index\s)|(?<=\.scan\s)|(?<=\.sub\s)|(?<=\.sub!\s)|(?<=\.gsub\s)|(?<=\.gsub!\s)|(?<=\.match\s)|(?<=(?:\s|;)if\s)|(?<=(?:\s|;)elsif\s)|(?<=^when\s)|(?<=^index\s)|(?<=^scan\s)|(?<=^sub\s)|(?<=^gsub\s)|(?<=^sub!\s)|(?<=^gsub!\s)|(?<=^match\s)|(?<=^if\s)|(?<=^elsif\s))(\s*)(/)`, ByGroups(Text, LiteralStringRegex), Push("multiline-regex")},
34 {`(?<=\(|,|\[)/`, LiteralStringRegex, Push("multiline-regex")},
35 {`(\s+)(/)(?![\s=])`, ByGroups(Text, LiteralStringRegex), Push("multiline-regex")},
36 {`(0o[0-7]+(?:_[0-7]+)*(?:_?[iu][0-9]+)?)\b(\s*)([/?])?`, ByGroups(LiteralNumberOct, Text, Operator), nil},
37 {`(0x[0-9A-Fa-f]+(?:_[0-9A-Fa-f]+)*(?:_?[iu][0-9]+)?)\b(\s*)([/?])?`, ByGroups(LiteralNumberHex, Text, Operator), nil},
38 {`(0b[01]+(?:_[01]+)*(?:_?[iu][0-9]+)?)\b(\s*)([/?])?`, ByGroups(LiteralNumberBin, Text, Operator), nil},
39 {`((?:0(?![0-9])|[1-9][\d_]*)(?:\.\d[\d_]*)(?:e[+-]?[0-9]+)?(?:_?f[0-9]+)?)(\s*)([/?])?`, ByGroups(LiteralNumberFloat, Text, Operator), nil},
40 {`((?:0(?![0-9])|[1-9][\d_]*)(?:\.\d[\d_]*)?(?:e[+-]?[0-9]+)(?:_?f[0-9]+)?)(\s*)([/?])?`, ByGroups(LiteralNumberFloat, Text, Operator), nil},
41 {`((?:0(?![0-9])|[1-9][\d_]*)(?:\.\d[\d_]*)?(?:e[+-]?[0-9]+)?(?:_?f[0-9]+))(\s*)([/?])?`, ByGroups(LiteralNumberFloat, Text, Operator), nil},
42 {`(0\b|[1-9][\d]*(?:_\d+)*(?:_?[iu][0-9]+)?)\b(\s*)([/?])?`, ByGroups(LiteralNumberInteger, Text, Operator), nil},
43 {`@@[a-zA-Z_]\w*`, NameVariableClass, nil},
44 {`@[a-zA-Z_]\w*`, NameVariableInstance, nil},
45 {`\$\w+`, NameVariableGlobal, nil},
46 {"\\$[!@&`\\'+~=/\\\\,;.<>_*$?:\"^-]", NameVariableGlobal, nil},
47 {`\$-[0adFiIlpvw]`, NameVariableGlobal, nil},
48 {`::`, Operator, nil},
49 Include("strings"),
50 {`\?(\\[MC]-)*(\\([\\befnrtv#"\']|x[a-fA-F0-9]{1,2}|[0-7]{1,3})|\S)(?!\w)`, LiteralStringChar, nil},
51 {`[A-Z][A-Z_]+\b`, NameConstant, nil},
52 {`\{%`, LiteralStringInterpol, Push("in-macro-control")},
53 {`\{\{`, LiteralStringInterpol, Push("in-macro-expr")},
54 {`(@\[)(\s*)([A-Z]\w*)`, ByGroups(Operator, Text, NameDecorator), Push("in-attr")},
55 {Words(`(\.|::)`, ``, `!=`, `!~`, `!`, `%`, `&&`, `&`, `**`, `*`, `+`, `-`, `/`, `<=>`, `<<`, `<=`, `<`, `===`, `==`, `=~`, `=`, `>=`, `>>`, `>`, `[]=`, `[]?`, `[]`, `^`, `||`, `|`, `~`), ByGroups(Operator, NameOperator), nil},
56 {"(\\.|::)([a-zA-Z_]\\w*[!?]?|[*%&^`~+\\-/\\[<>=])", ByGroups(Operator, Name), nil},
57 {`[a-zA-Z_]\w*(?:[!?](?!=))?`, Name, nil},
58 {`(\[|\]\??|\*\*|<=>?|>=|<<?|>>?|=~|===|!~|&&?|\|\||\.{1,3})`, Operator, nil},
59 {`[-+/*%=<>&!^|~]=?`, Operator, nil},
60 {`[(){};,/?:\\]`, Punctuation, nil},
61 {`\s+`, Text, nil},
62 },
63 "funcname": {
64 {"(?:([a-zA-Z_]\\w*)(\\.))?([a-zA-Z_]\\w*[!?]?|\\*\\*?|[-+]@?|[/%&|^`~]|\\[\\]=?|<<|>>|<=?>|>=?|===?)", ByGroups(NameClass, Operator, NameFunction), Pop(1)},
65 Default(Pop(1)),
66 },
67 "classname": {
68 {`[A-Z_]\w*`, NameClass, nil},
69 {`(\()(\s*)([A-Z_]\w*)(\s*)(\))`, ByGroups(Punctuation, Text, NameClass, Text, Punctuation), nil},
70 Default(Pop(1)),
71 },
72 "in-intp": {
73 {`\{`, LiteralStringInterpol, Push()},
74 {`\}`, LiteralStringInterpol, Pop(1)},
75 Include("root"),
76 },
77 "string-intp": {
78 {`#\{`, LiteralStringInterpol, Push("in-intp")},
79 },
80 "string-escaped": {
81 {`\\([\\befnstv#"\']|x[a-fA-F0-9]{1,2}|[0-7]{1,3})`, LiteralStringEscape, nil},
82 },
83 "string-intp-escaped": {
84 Include("string-intp"),
85 Include("string-escaped"),
86 },
87 "interpolated-regex": {
88 Include("string-intp"),
89 {`[\\#]`, LiteralStringRegex, nil},
90 {`[^\\#]+`, LiteralStringRegex, nil},
91 },
92 "interpolated-string": {
93 Include("string-intp"),
94 {`[\\#]`, LiteralStringOther, nil},
95 {`[^\\#]+`, LiteralStringOther, nil},
96 },
97 "multiline-regex": {
98 Include("string-intp"),
99 {`\\\\`, LiteralStringRegex, nil},
100 {`\\/`, LiteralStringRegex, nil},
101 {`[\\#]`, LiteralStringRegex, nil},
102 {`[^\\/#]+`, LiteralStringRegex, nil},
103 {`/[imsx]*`, LiteralStringRegex, Pop(1)},
104 },
105 "end-part": {
106 {`.+`, CommentPreproc, Pop(1)},
107 },
108 "in-macro-control": {
109 {`\{%`, LiteralStringInterpol, Push()},
110 {`%\}`, LiteralStringInterpol, Pop(1)},
111 {`for\b|in\b`, Keyword, nil},
112 Include("root"),
113 },
114 "in-macro-expr": {
115 {`\{\{`, LiteralStringInterpol, Push()},
116 {`\}\}`, LiteralStringInterpol, Pop(1)},
117 Include("root"),
118 },
119 "in-attr": {
120 {`\[`, Operator, Push()},
121 {`\]`, Operator, Pop(1)},
122 Include("root"),
123 },
124 "strings": {
125 {`\:@{0,2}[a-zA-Z_]\w*[!?]?`, LiteralStringSymbol, nil},
126 {Words(`\:@{0,2}`, ``, `!=`, `!~`, `!`, `%`, `&&`, `&`, `**`, `*`, `+`, `-`, `/`, `<=>`, `<<`, `<=`, `<`, `===`, `==`, `=~`, `=`, `>=`, `>>`, `>`, `[]=`, `[]?`, `[]`, `^`, `||`, `|`, `~`), LiteralStringSymbol, nil},
127 {`:'(\\\\|\\'|[^'])*'`, LiteralStringSymbol, nil},
128 {`'(\\\\|\\'|[^']|\\[^'\\]+)'`, LiteralStringChar, nil},
129 {`:"`, LiteralStringSymbol, Push("simple-sym")},
130 {`([a-zA-Z_]\w*)(:)(?!:)`, ByGroups(LiteralStringSymbol, Punctuation), nil},
131 {`"`, LiteralStringDouble, Push("simple-string")},
132 {"(?<!\\.)`", LiteralStringBacktick, Push("simple-backtick")},
133 {`%\{`, LiteralStringOther, Push("cb-intp-string")},
134 {`%[wi]\{`, LiteralStringOther, Push("cb-string")},
135 {`%r\{`, LiteralStringRegex, Push("cb-regex")},
136 {`%\[`, LiteralStringOther, Push("sb-intp-string")},
137 {`%[wi]\[`, LiteralStringOther, Push("sb-string")},
138 {`%r\[`, LiteralStringRegex, Push("sb-regex")},
139 {`%\(`, LiteralStringOther, Push("pa-intp-string")},
140 {`%[wi]\(`, LiteralStringOther, Push("pa-string")},
141 {`%r\(`, LiteralStringRegex, Push("pa-regex")},
142 {`%<`, LiteralStringOther, Push("ab-intp-string")},
143 {`%[wi]<`, LiteralStringOther, Push("ab-string")},
144 {`%r<`, LiteralStringRegex, Push("ab-regex")},
145 {`(%r([\W_]))((?:\\\2|(?!\2).)*)(\2[imsx]*)`, String, nil},
146 {`(%[wi]([\W_]))((?:\\\2|(?!\2).)*)(\2)`, String, nil},
147 {`(?<=[-+/*%=<>&!^|~,(])(\s*)(%([\t ])(?:(?:\\\3|(?!\3).)*)\3)`, ByGroups(Text, LiteralStringOther, None), nil},
148 {`^(\s*)(%([\t ])(?:(?:\\\3|(?!\3).)*)\3)`, ByGroups(Text, LiteralStringOther, None), nil},
149 {`(%([\[{(<]))((?:\\\2|(?!\2).)*)(\2)`, String, nil},
150 },
151 "simple-string": {
152 Include("string-intp-escaped"),
153 {`[^\\"#]+`, LiteralStringDouble, nil},
154 {`[\\#]`, LiteralStringDouble, nil},
155 {`"`, LiteralStringDouble, Pop(1)},
156 },
157 "simple-sym": {
158 Include("string-escaped"),
159 {`[^\\"#]+`, LiteralStringSymbol, nil},
160 {`[\\#]`, LiteralStringSymbol, nil},
161 {`"`, LiteralStringSymbol, Pop(1)},
162 },
163 "simple-backtick": {
164 Include("string-intp-escaped"),
165 {"[^\\\\`#]+", LiteralStringBacktick, nil},
166 {`[\\#]`, LiteralStringBacktick, nil},
167 {"`", LiteralStringBacktick, Pop(1)},
168 },
169 "cb-intp-string": {
170 {`\\[\{]`, LiteralStringOther, nil},
171 {`\{`, LiteralStringOther, Push()},
172 {`\}`, LiteralStringOther, Pop(1)},
173 Include("string-intp-escaped"),
174 {`[\\#{}]`, LiteralStringOther, nil},
175 {`[^\\#{}]+`, LiteralStringOther, nil},
176 },
177 "cb-string": {
178 {`\\[\\{}]`, LiteralStringOther, nil},
179 {`\{`, LiteralStringOther, Push()},
180 {`\}`, LiteralStringOther, Pop(1)},
181 {`[\\#{}]`, LiteralStringOther, nil},
182 {`[^\\#{}]+`, LiteralStringOther, nil},
183 },
184 "cb-regex": {
185 {`\\[\\{}]`, LiteralStringRegex, nil},
186 {`\{`, LiteralStringRegex, Push()},
187 {`\}[imsx]*`, LiteralStringRegex, Pop(1)},
188 Include("string-intp"),
189 {`[\\#{}]`, LiteralStringRegex, nil},
190 {`[^\\#{}]+`, LiteralStringRegex, nil},
191 },
192 "sb-intp-string": {
193 {`\\[\[]`, LiteralStringOther, nil},
194 {`\[`, LiteralStringOther, Push()},
195 {`\]`, LiteralStringOther, Pop(1)},
196 Include("string-intp-escaped"),
197 {`[\\#\[\]]`, LiteralStringOther, nil},
198 {`[^\\#\[\]]+`, LiteralStringOther, nil},
199 },
200 "sb-string": {
201 {`\\[\\\[\]]`, LiteralStringOther, nil},
202 {`\[`, LiteralStringOther, Push()},
203 {`\]`, LiteralStringOther, Pop(1)},
204 {`[\\#\[\]]`, LiteralStringOther, nil},
205 {`[^\\#\[\]]+`, LiteralStringOther, nil},
206 },
207 "sb-regex": {
208 {`\\[\\\[\]]`, LiteralStringRegex, nil},
209 {`\[`, LiteralStringRegex, Push()},
210 {`\][imsx]*`, LiteralStringRegex, Pop(1)},
211 Include("string-intp"),
212 {`[\\#\[\]]`, LiteralStringRegex, nil},
213 {`[^\\#\[\]]+`, LiteralStringRegex, nil},
214 },
215 "pa-intp-string": {
216 {`\\[\(]`, LiteralStringOther, nil},
217 {`\(`, LiteralStringOther, Push()},
218 {`\)`, LiteralStringOther, Pop(1)},
219 Include("string-intp-escaped"),
220 {`[\\#()]`, LiteralStringOther, nil},
221 {`[^\\#()]+`, LiteralStringOther, nil},
222 },
223 "pa-string": {
224 {`\\[\\()]`, LiteralStringOther, nil},
225 {`\(`, LiteralStringOther, Push()},
226 {`\)`, LiteralStringOther, Pop(1)},
227 {`[\\#()]`, LiteralStringOther, nil},
228 {`[^\\#()]+`, LiteralStringOther, nil},
229 },
230 "pa-regex": {
231 {`\\[\\()]`, LiteralStringRegex, nil},
232 {`\(`, LiteralStringRegex, Push()},
233 {`\)[imsx]*`, LiteralStringRegex, Pop(1)},
234 Include("string-intp"),
235 {`[\\#()]`, LiteralStringRegex, nil},
236 {`[^\\#()]+`, LiteralStringRegex, nil},
237 },
238 "ab-intp-string": {
239 {`\\[<]`, LiteralStringOther, nil},
240 {`<`, LiteralStringOther, Push()},
241 {`>`, LiteralStringOther, Pop(1)},
242 Include("string-intp-escaped"),
243 {`[\\#<>]`, LiteralStringOther, nil},
244 {`[^\\#<>]+`, LiteralStringOther, nil},
245 },
246 "ab-string": {
247 {`\\[\\<>]`, LiteralStringOther, nil},
248 {`<`, LiteralStringOther, Push()},
249 {`>`, LiteralStringOther, Pop(1)},
250 {`[\\#<>]`, LiteralStringOther, nil},
251 {`[^\\#<>]+`, LiteralStringOther, nil},
252 },
253 "ab-regex": {
254 {`\\[\\<>]`, LiteralStringRegex, nil},
255 {`<`, LiteralStringRegex, Push()},
256 {`>[imsx]*`, LiteralStringRegex, Pop(1)},
257 Include("string-intp"),
258 {`[\\#<>]`, LiteralStringRegex, nil},
259 {`[^\\#<>]+`, LiteralStringRegex, nil},
260 },
261 },
262))