| Index: trunk/extensions/UploadWizard/resources/mediawiki.language.parser.peg |
| — | — | @@ -0,0 +1,76 @@ |
| | 2 | +/* PEG grammar for a subset of wikitext, useful in the MediaWiki frontend */ |
| | 3 | + |
| | 4 | +start |
| | 5 | + = e:expression* { return e.length > 1 ? [ "CONCAT" ].concat(e) : e[0]; } |
| | 6 | + |
| | 7 | +expression |
| | 8 | + = template |
| | 9 | + / link |
| | 10 | + / extlink |
| | 11 | + / replacement |
| | 12 | + / literal |
| | 13 | + |
| | 14 | +paramExpression |
| | 15 | + = template |
| | 16 | + / link |
| | 17 | + / extlink |
| | 18 | + / replacement |
| | 19 | + / literalWithoutBar |
| | 20 | + |
| | 21 | +template |
| | 22 | + = "{{" t:templateContents "}}" { return t; } |
| | 23 | + |
| | 24 | +templateContents |
| | 25 | + = twr:templateWithReplacement p:templateParam* { return twr.concat(p) } |
| | 26 | + / t:templateName p:templateParam* { return p.length ? [ t, p ] : [ t ] } |
| | 27 | + |
| | 28 | +templateWithReplacement |
| | 29 | + = t:templateName ":" r:replacement { return [ t, r ] } |
| | 30 | + |
| | 31 | +templateParam |
| | 32 | + = "|" e:paramExpression* { return e.length > 1 ? [ "CONCAT" ].concat(e) : e[0]; } |
| | 33 | + |
| | 34 | +templateName |
| | 35 | + = tn:[A-Za-z_]+ { return tn.join('').toUpperCase() } |
| | 36 | + |
| | 37 | +link |
| | 38 | + = "[[" w:expression "]]" { return [ 'WLINK', w ]; } |
| | 39 | + |
| | 40 | +extlink |
| | 41 | + = "[" url:url whitespace text:expression "]" { return [ 'LINK', url, text ] } |
| | 42 | + |
| | 43 | +url |
| | 44 | + = url:[^ ]+ { return url.join(''); } |
| | 45 | + |
| | 46 | +whitespace |
| | 47 | + = [ ]+ |
| | 48 | + |
| | 49 | +replacement |
| | 50 | + = '$' digits:digits { return [ 'REPLACE', parseInt( digits, 10 ) - 1 ] } |
| | 51 | + |
| | 52 | +digits |
| | 53 | + = [0-9]+ |
| | 54 | + |
| | 55 | +literal |
| | 56 | + = lit:escapedOrRegularLiteral+ { return lit.join(''); } |
| | 57 | + |
| | 58 | +literalWithoutBar |
| | 59 | + = lit:escapedOrLiteralWithoutBar+ { return lit.join(''); } |
| | 60 | + |
| | 61 | +escapedOrRegularLiteral |
| | 62 | + = escapedLiteral |
| | 63 | + / regularLiteral |
| | 64 | + |
| | 65 | +escapedOrLiteralWithoutBar |
| | 66 | + = escapedLiteral |
| | 67 | + / regularLiteralWithoutBar |
| | 68 | + |
| | 69 | +escapedLiteral |
| | 70 | + = "\\" escaped:. { return escaped; } |
| | 71 | + |
| | 72 | +regularLiteral |
| | 73 | + = [^{}\[\]$\\] |
| | 74 | + |
| | 75 | +regularLiteralWithoutBar |
| | 76 | + = [^{}\[\]$\\|] |
| | 77 | + |