Locally add prismjs
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node_modules/prismjs/components
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node_modules/prismjs/components/prism-scheme.js
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node_modules/prismjs/components/prism-scheme.js
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(function (Prism) {
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Prism.languages.scheme = {
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// this supports "normal" single-line comments:
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// ; comment
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// and (potentially nested) multiline comments:
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// #| comment #| nested |# still comment |#
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// (only 1 level of nesting is supported)
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'comment': /;.*|#;\s*(?:\((?:[^()]|\([^()]*\))*\)|\[(?:[^\[\]]|\[[^\[\]]*\])*\])|#\|(?:[^#|]|#(?!\|)|\|(?!#)|#\|(?:[^#|]|#(?!\|)|\|(?!#))*\|#)*\|#/,
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'string': {
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pattern: /"(?:[^"\\]|\\.)*"/,
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greedy: true
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},
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'symbol': {
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pattern: /'[^()\[\]#'\s]+/,
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greedy: true
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},
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'char': {
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pattern: /#\\(?:[ux][a-fA-F\d]+\b|[-a-zA-Z]+\b|[\uD800-\uDBFF][\uDC00-\uDFFF]|\S)/,
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greedy: true
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},
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'lambda-parameter': [
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// https://www.cs.cmu.edu/Groups/AI/html/r4rs/r4rs_6.html#SEC30
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{
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pattern: /((?:^|[^'`#])[(\[]lambda\s+)(?:[^|()\[\]'\s]+|\|(?:[^\\|]|\\.)*\|)/,
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lookbehind: true
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},
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{
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pattern: /((?:^|[^'`#])[(\[]lambda\s+[(\[])[^()\[\]']+/,
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lookbehind: true
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}
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],
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'keyword': {
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pattern: /((?:^|[^'`#])[(\[])(?:begin|case(?:-lambda)?|cond(?:-expand)?|define(?:-library|-macro|-record-type|-syntax|-values)?|defmacro|delay(?:-force)?|do|else|except|export|guard|if|import|include(?:-ci|-library-declarations)?|lambda|let(?:rec)?(?:-syntax|-values|\*)?|let\*-values|only|parameterize|prefix|(?:quasi-?)?quote|rename|set!|syntax-(?:case|rules)|unless|unquote(?:-splicing)?|when)(?=[()\[\]\s]|$)/,
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lookbehind: true
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},
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'builtin': {
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// all functions of the base library of R7RS plus some of built-ins of R5Rs
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pattern: /((?:^|[^'`#])[(\[])(?:abs|and|append|apply|assoc|ass[qv]|binary-port\?|boolean=?\?|bytevector(?:-append|-copy|-copy!|-length|-u8-ref|-u8-set!|\?)?|caar|cadr|call-with-(?:current-continuation|port|values)|call\/cc|car|cdar|cddr|cdr|ceiling|char(?:->integer|-ready\?|\?|<\?|<=\?|=\?|>\?|>=\?)|close-(?:input-port|output-port|port)|complex\?|cons|current-(?:error|input|output)-port|denominator|dynamic-wind|eof-object\??|eq\?|equal\?|eqv\?|error|error-object(?:-irritants|-message|\?)|eval|even\?|exact(?:-integer-sqrt|-integer\?|\?)?|expt|features|file-error\?|floor(?:-quotient|-remainder|\/)?|flush-output-port|for-each|gcd|get-output-(?:bytevector|string)|inexact\??|input-port(?:-open\?|\?)|integer(?:->char|\?)|lcm|length|list(?:->string|->vector|-copy|-ref|-set!|-tail|\?)?|make-(?:bytevector|list|parameter|string|vector)|map|max|member|memq|memv|min|modulo|negative\?|newline|not|null\?|number(?:->string|\?)|numerator|odd\?|open-(?:input|output)-(?:bytevector|string)|or|output-port(?:-open\?|\?)|pair\?|peek-char|peek-u8|port\?|positive\?|procedure\?|quotient|raise|raise-continuable|rational\?|rationalize|read-(?:bytevector|bytevector!|char|error\?|line|string|u8)|real\?|remainder|reverse|round|set-c[ad]r!|square|string(?:->list|->number|->symbol|->utf8|->vector|-append|-copy|-copy!|-fill!|-for-each|-length|-map|-ref|-set!|\?|<\?|<=\?|=\?|>\?|>=\?)?|substring|symbol(?:->string|\?|=\?)|syntax-error|textual-port\?|truncate(?:-quotient|-remainder|\/)?|u8-ready\?|utf8->string|values|vector(?:->list|->string|-append|-copy|-copy!|-fill!|-for-each|-length|-map|-ref|-set!|\?)?|with-exception-handler|write-(?:bytevector|char|string|u8)|zero\?)(?=[()\[\]\s]|$)/,
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lookbehind: true
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},
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'operator': {
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pattern: /((?:^|[^'`#])[(\[])(?:[-+*%/]|[<>]=?|=>?)(?=[()\[\]\s]|$)/,
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lookbehind: true
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},
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'number': {
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// The number pattern from [the R7RS spec](https://small.r7rs.org/attachment/r7rs.pdf).
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//
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// <number> := <num 2>|<num 8>|<num 10>|<num 16>
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// <num R> := <prefix R><complex R>
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// <complex R> := <real R>(?:@<real R>|<imaginary R>)?|<imaginary R>
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// <imaginary R> := [+-](?:<ureal R>|(?:inf|nan)\.0)?i
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// <real R> := [+-]?<ureal R>|[+-](?:inf|nan)\.0
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// <ureal R> := <uint R>(?:\/<uint R>)?
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// | <decimal R>
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//
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// <decimal 10> := (?:\d+(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?
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// <uint R> := <digit R>+
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// <prefix R> := <radix R>(?:#[ei])?|(?:#[ei])?<radix R>
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// <radix 2> := #b
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// <radix 8> := #o
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// <radix 10> := (?:#d)?
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// <radix 16> := #x
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// <digit 2> := [01]
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// <digit 8> := [0-7]
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// <digit 10> := \d
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// <digit 16> := [0-9a-f]
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//
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// The problem with this grammar is that the resulting regex is way to complex, so we simplify by grouping all
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// non-decimal bases together. This results in a decimal (dec) and combined binary, octal, and hexadecimal (box)
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// pattern:
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pattern: RegExp(SortedBNF({
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'<ureal dec>': /\d+(?:\/\d+)|(?:\d+(?:\.\d*)?|\.\d+)(?:[esfdl][+-]?\d+)?/.source,
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'<real dec>': /[+-]?<ureal dec>|[+-](?:inf|nan)\.0/.source,
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'<imaginary dec>': /[+-](?:<ureal dec>|(?:inf|nan)\.0)?i/.source,
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'<complex dec>': /<real dec>(?:@<real dec>|<imaginary dec>)?|<imaginary dec>/.source,
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'<num dec>': /(?:#d(?:#[ei])?|#[ei](?:#d)?)?<complex dec>/.source,
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'<ureal box>': /[0-9a-f]+(?:\/[0-9a-f]+)?/.source,
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'<real box>': /[+-]?<ureal box>|[+-](?:inf|nan)\.0/.source,
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'<imaginary box>': /[+-](?:<ureal box>|(?:inf|nan)\.0)?i/.source,
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'<complex box>': /<real box>(?:@<real box>|<imaginary box>)?|<imaginary box>/.source,
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'<num box>': /#[box](?:#[ei])?|(?:#[ei])?#[box]<complex box>/.source,
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'<number>': /(^|[()\[\]\s])(?:<num dec>|<num box>)(?=[()\[\]\s]|$)/.source,
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}), 'i'),
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lookbehind: true
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},
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'boolean': {
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pattern: /(^|[()\[\]\s])#(?:[ft]|false|true)(?=[()\[\]\s]|$)/,
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lookbehind: true
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},
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'function': {
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pattern: /((?:^|[^'`#])[(\[])(?:[^|()\[\]'\s]+|\|(?:[^\\|]|\\.)*\|)(?=[()\[\]\s]|$)/,
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lookbehind: true
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},
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'identifier': {
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pattern: /(^|[()\[\]\s])\|(?:[^\\|]|\\.)*\|(?=[()\[\]\s]|$)/,
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lookbehind: true,
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greedy: true
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},
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'punctuation': /[()\[\]']/
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};
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/**
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* Given a topologically sorted BNF grammar, this will return the RegExp source of last rule of the grammar.
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*
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* @param {Record<string, string>} grammar
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* @returns {string}
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*/
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function SortedBNF(grammar) {
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for (var key in grammar) {
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grammar[key] = grammar[key].replace(/<[\w\s]+>/g, function (key) {
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return '(?:' + grammar[key].trim() + ')';
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});
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}
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// return the last item
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return grammar[key];
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}
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}(Prism));
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