1 package s
2
3 import (
4 . "github.com/alecthomas/chroma"
5 "github.com/alecthomas/chroma/lexers/internal"
6 )
7
8
9
10
11 var SchemeLang = internal.Register(MustNewLazyLexer(
12 &Config{
13 Name: "Scheme",
14 Aliases: []string{"scheme", "scm"},
15 Filenames: []string{"*.scm", "*.ss"},
16 MimeTypes: []string{"text/x-scheme", "application/x-scheme"},
17 },
18 schemeLangRules,
19 ))
20
21 func schemeLangRules() Rules {
22 return Rules{
23 "root": {
24 {`;.*$`, CommentSingle, nil},
25 {`#\|`, CommentMultiline, Push("multiline-comment")},
26 {`#;\s*\(`, Comment, Push("commented-form")},
27 {`#!r6rs`, Comment, nil},
28 {`\s+`, Text, nil},
29 {`-?\d+\.\d+`, LiteralNumberFloat, nil},
30 {`-?\d+`, LiteralNumberInteger, nil},
31 {`"(\\\\|\\"|[^"])*"`, LiteralString, nil},
32 {`'[\w!$%&*+,/:<=>?@^~|-]+`, LiteralStringSymbol, nil},
33 {`#\\(alarm|backspace|delete|esc|linefeed|newline|page|return|space|tab|vtab|x[0-9a-zA-Z]{1,5}|.)`, LiteralStringChar, nil},
34 {`(#t|#f)`, NameConstant, nil},
35 {"('|#|`|,@|,|\\.)", Operator, nil},
36 {`(lambda |define |if |else |cond |and |or |case |let |let\* |letrec |begin |do |delay |set\! |\=\> |quote |quasiquote |unquote |unquote\-splicing |define\-syntax |let\-syntax |letrec\-syntax |syntax\-rules )`, Keyword, nil},
37 {`(?<='\()[\w!$%&*+,/:<=>?@^~|-]+`, NameVariable, nil},
38 {`(?<=#\()[\w!$%&*+,/:<=>?@^~|-]+`, NameVariable, nil},
39 {`(?<=\()(\* |\+ |\- |\/ |\< |\<\= |\= |\> |\>\= |abs |acos |angle |append |apply |asin |assoc |assq |assv |atan |boolean\? |caaaar |caaadr |caaar |caadar |caaddr |caadr |caar |cadaar |cadadr |cadar |caddar |cadddr |caddr |cadr |call\-with\-current\-continuation |call\-with\-input\-file |call\-with\-output\-file |call\-with\-values |call\/cc |car |cdaaar |cdaadr |cdaar |cdadar |cdaddr |cdadr |cdar |cddaar |cddadr |cddar |cdddar |cddddr |cdddr |cddr |cdr |ceiling |char\-\>integer |char\-alphabetic\? |char\-ci\<\=\? |char\-ci\<\? |char\-ci\=\? |char\-ci\>\=\? |char\-ci\>\? |char\-downcase |char\-lower\-case\? |char\-numeric\? |char\-ready\? |char\-upcase |char\-upper\-case\? |char\-whitespace\? |char\<\=\? |char\<\? |char\=\? |char\>\=\? |char\>\? |char\? |close\-input\-port |close\-output\-port |complex\? |cons |cos |current\-input\-port |current\-output\-port |denominator |display |dynamic\-wind |eof\-object\? |eq\? |equal\? |eqv\? |eval |even\? |exact\-\>inexact |exact\? |exp |expt |floor |for\-each |force |gcd |imag\-part |inexact\-\>exact |inexact\? |input\-port\? |integer\-\>char |integer\? |interaction\-environment |lcm |length |list |list\-\>string |list\-\>vector |list\-ref |list\-tail |list\? |load |log |magnitude |make\-polar |make\-rectangular |make\-string |make\-vector |map |max |member |memq |memv |min |modulo |negative\? |newline |not |null\-environment |null\? |number\-\>string |number\? |numerator |odd\? |open\-input\-file |open\-output\-file |output\-port\? |pair\? |peek\-char |port\? |positive\? |procedure\? |quotient |rational\? |rationalize |read |read\-char |real\-part |real\? |remainder |reverse |round |scheme\-report\-environment |set\-car\! |set\-cdr\! |sin |sqrt |string |string\-\>list |string\-\>number |string\-\>symbol |string\-append |string\-ci\<\=\? |string\-ci\<\? |string\-ci\=\? |string\-ci\>\=\? |string\-ci\>\? |string\-copy |string\-fill\! |string\-length |string\-ref |string\-set\! |string\<\=\? |string\<\? |string\=\? |string\>\=\? |string\>\? |string\? |substring |symbol\-\>string |symbol\? |tan |transcript\-off |transcript\-on |truncate |values |vector |vector\-\>list |vector\-fill\! |vector\-length |vector\-ref |vector\-set\! |vector\? |with\-input\-from\-file |with\-output\-to\-file |write |write\-char |zero\? )`, NameBuiltin, nil},
40 {`(?<=\()[\w!$%&*+,/:<=>?@^~|-]+`, NameFunction, nil},
41 {`[\w!$%&*+,/:<=>?@^~|-]+`, NameVariable, nil},
42 {`(\(|\))`, Punctuation, nil},
43 {`(\[|\])`, Punctuation, nil},
44 },
45 "multiline-comment": {
46 {`#\|`, CommentMultiline, Push()},
47 {`\|#`, CommentMultiline, Pop(1)},
48 {`[^|#]+`, CommentMultiline, nil},
49 {`[|#]`, CommentMultiline, nil},
50 },
51 "commented-form": {
52 {`\(`, Comment, Push()},
53 {`\)`, Comment, Pop(1)},
54 {`[^()]+`, Comment, nil},
55 },
56 }
57 }
58
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