mirror of https://github.com/jkjoy/sunpeiwen.git
121 lines
6.2 KiB
JavaScript
121 lines
6.2 KiB
JavaScript
(function (Prism) {
|
|
Prism.languages.scheme = {
|
|
// this supports "normal" single-line comments:
|
|
// ; comment
|
|
// and (potentially nested) multiline comments:
|
|
// #| comment #| nested |# still comment |#
|
|
// (only 1 level of nesting is supported)
|
|
'comment': /;.*|#;\s*(?:\((?:[^()]|\([^()]*\))*\)|\[(?:[^\[\]]|\[[^\[\]]*\])*\])|#\|(?:[^#|]|#(?!\|)|\|(?!#)|#\|(?:[^#|]|#(?!\|)|\|(?!#))*\|#)*\|#/,
|
|
'string': {
|
|
pattern: /"(?:[^"\\]|\\.)*"/,
|
|
greedy: true
|
|
},
|
|
'symbol': {
|
|
pattern: /'[^()\[\]#'\s]+/,
|
|
greedy: true
|
|
},
|
|
'char': {
|
|
pattern: /#\\(?:[ux][a-fA-F\d]+\b|[-a-zA-Z]+\b|[\uD800-\uDBFF][\uDC00-\uDFFF]|\S)/,
|
|
greedy: true
|
|
},
|
|
'lambda-parameter': [
|
|
// https://www.cs.cmu.edu/Groups/AI/html/r4rs/r4rs_6.html#SEC30
|
|
{
|
|
pattern: /((?:^|[^'`#])[(\[]lambda\s+)(?:[^|()\[\]'\s]+|\|(?:[^\\|]|\\.)*\|)/,
|
|
lookbehind: true
|
|
},
|
|
{
|
|
pattern: /((?:^|[^'`#])[(\[]lambda\s+[(\[])[^()\[\]']+/,
|
|
lookbehind: true
|
|
}
|
|
],
|
|
'keyword': {
|
|
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]|$)/,
|
|
lookbehind: true
|
|
},
|
|
'builtin': {
|
|
// all functions of the base library of R7RS plus some of built-ins of R5Rs
|
|
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]|$)/,
|
|
lookbehind: true
|
|
},
|
|
'operator': {
|
|
pattern: /((?:^|[^'`#])[(\[])(?:[-+*%/]|[<>]=?|=>?)(?=[()\[\]\s]|$)/,
|
|
lookbehind: true
|
|
},
|
|
'number': {
|
|
// The number pattern from [the R7RS spec](https://small.r7rs.org/attachment/r7rs.pdf).
|
|
//
|
|
// <number> := <num 2>|<num 8>|<num 10>|<num 16>
|
|
// <num R> := <prefix R><complex R>
|
|
// <complex R> := <real R>(?:@<real R>|<imaginary R>)?|<imaginary R>
|
|
// <imaginary R> := [+-](?:<ureal R>|(?:inf|nan)\.0)?i
|
|
// <real R> := [+-]?<ureal R>|[+-](?:inf|nan)\.0
|
|
// <ureal R> := <uint R>(?:\/<uint R>)?
|
|
// | <decimal R>
|
|
//
|
|
// <decimal 10> := (?:\d+(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?
|
|
// <uint R> := <digit R>+
|
|
// <prefix R> := <radix R>(?:#[ei])?|(?:#[ei])?<radix R>
|
|
// <radix 2> := #b
|
|
// <radix 8> := #o
|
|
// <radix 10> := (?:#d)?
|
|
// <radix 16> := #x
|
|
// <digit 2> := [01]
|
|
// <digit 8> := [0-7]
|
|
// <digit 10> := \d
|
|
// <digit 16> := [0-9a-f]
|
|
//
|
|
// The problem with this grammar is that the resulting regex is way to complex, so we simplify by grouping all
|
|
// non-decimal bases together. This results in a decimal (dec) and combined binary, octal, and hexadecimal (box)
|
|
// pattern:
|
|
pattern: RegExp(SortedBNF({
|
|
'<ureal dec>': /\d+(?:\/\d+)|(?:\d+(?:\.\d*)?|\.\d+)(?:[esfdl][+-]?\d+)?/.source,
|
|
'<real dec>': /[+-]?<ureal dec>|[+-](?:inf|nan)\.0/.source,
|
|
'<imaginary dec>': /[+-](?:<ureal dec>|(?:inf|nan)\.0)?i/.source,
|
|
'<complex dec>': /<real dec>(?:@<real dec>|<imaginary dec>)?|<imaginary dec>/.source,
|
|
'<num dec>': /(?:#d(?:#[ei])?|#[ei](?:#d)?)?<complex dec>/.source,
|
|
|
|
'<ureal box>': /[0-9a-f]+(?:\/[0-9a-f]+)?/.source,
|
|
'<real box>': /[+-]?<ureal box>|[+-](?:inf|nan)\.0/.source,
|
|
'<imaginary box>': /[+-](?:<ureal box>|(?:inf|nan)\.0)?i/.source,
|
|
'<complex box>': /<real box>(?:@<real box>|<imaginary box>)?|<imaginary box>/.source,
|
|
'<num box>': /#[box](?:#[ei])?|(?:#[ei])?#[box]<complex box>/.source,
|
|
|
|
'<number>': /(^|[()\[\]\s])(?:<num dec>|<num box>)(?=[()\[\]\s]|$)/.source,
|
|
}), 'i'),
|
|
lookbehind: true
|
|
},
|
|
'boolean': {
|
|
pattern: /(^|[()\[\]\s])#(?:[ft]|false|true)(?=[()\[\]\s]|$)/,
|
|
lookbehind: true
|
|
},
|
|
'function': {
|
|
pattern: /((?:^|[^'`#])[(\[])(?:[^|()\[\]'\s]+|\|(?:[^\\|]|\\.)*\|)(?=[()\[\]\s]|$)/,
|
|
lookbehind: true
|
|
},
|
|
'identifier': {
|
|
pattern: /(^|[()\[\]\s])\|(?:[^\\|]|\\.)*\|(?=[()\[\]\s]|$)/,
|
|
lookbehind: true,
|
|
greedy: true
|
|
},
|
|
'punctuation': /[()\[\]']/
|
|
};
|
|
|
|
/**
|
|
* Given a topologically sorted BNF grammar, this will return the RegExp source of last rule of the grammar.
|
|
*
|
|
* @param {Record<string, string>} grammar
|
|
* @returns {string}
|
|
*/
|
|
function SortedBNF(grammar) {
|
|
for (var key in grammar) {
|
|
grammar[key] = grammar[key].replace(/<[\w\s]+>/g, function (key) {
|
|
return '(?:' + grammar[key].trim() + ')';
|
|
});
|
|
}
|
|
// return the last item
|
|
return grammar[key];
|
|
}
|
|
|
|
}(Prism));
|