mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 18:39:52 +00:00
811 lines
19 KiB
Plaintext
811 lines
19 KiB
Plaintext
/* Produces output more or less compatible with FakeParser; plug it into FP's output and see */
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{
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var dp = function ( msg ) {
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if ( false ) {
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console.log(msg);
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}
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}
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/*
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* Flags for specific parse environments (inside tables, links etc). Flags
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* trigger syntactic stops in the inline_breaks production, which
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* terminates inline and attribute matches. Flags merely reduce the number
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* of productions needed: The grammar is still context-free as the
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* productions can just be unrolled for all combinations of environments
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* at the cost of a much larger grammar.
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*/
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var syntaxFlags = {};
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var setFlag = function(flag) {
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if (syntaxFlags[flag] !== undefined) {
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syntaxFlags[flag]++;
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} else {
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syntaxFlags[flag] = 1;
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}
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return true;
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}
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var clearFlag = function(flag) {
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syntaxFlags[flag]--;
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}
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/* Temporary debugging help. Is there anything similar in JS or a library? */
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var print_r = function (arr, level) {
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var dumped_text = "";
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if (!level) level = 0;
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//The padding given at the beginning of the line.
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var level_padding = "";
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var bracket_level_padding = "";
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for (var j = 0; j < level + 1; j++) level_padding += " ";
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for (var b = 0; b < level; b++) bracket_level_padding += " ";
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if (typeof(arr) == 'object') { //Array/Hashes/Objects
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dumped_text += "Array\n";
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dumped_text += bracket_level_padding + "(\n";
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for (var item in arr) {
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var value = arr[item];
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if (typeof(value) == 'object') { //If it is an array,
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dumped_text += level_padding + "[" + item + "] => ";
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dumped_text += print_r(value, level + 2);
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} else {
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dumped_text += level_padding + "[" + item + "] => '" + value + "'\n";
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}
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}
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dumped_text += bracket_level_padding + ")\n\n";
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} else { //Strings/Chars/Numbers etc.
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dumped_text = "=>" + arr + "<=(" + typeof(arr) + ")";
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}
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return dumped_text;
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}
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// Convert list prefixes to a list of WikiDom list styles
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var bulletsToTypes = function (bullets) {
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var bTypes = [];
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var blen = bullets.length;
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for (var i = 0; i < bullets.length; i++) {
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switch (bullets[i]) {
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case '*':
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bTypes.push('bullet'); break;
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case '#':
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bTypes.push('number'); break;
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case ';':
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bTypes.push('term'); break;
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case ':':
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bTypes.push('description'); break;
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}
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}
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return bTypes;
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};
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var extractInline = function ( node ) {
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return { text: extractText(node)
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}
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};
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var extractText = function ( node ) {
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dp("extract: " + print_r(node));
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if (typeof node === 'string') {
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return node;
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} else if ($.isArray(node)) {
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var texts = [];
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for (var i = 0, length = node.length; i < length; i++) {
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texts.push(extractText(node[i]));
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}
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return texts.join('');
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} else if ( 'text' in node ) {
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return extractText(node.text);
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} else if ( 'content' in node ) {
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return extractText(node.content);
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} else if ( 'children' in node ) {
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var texts = [];
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for (var i = 0, length = node.children.length; i < length; i++) {
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texts.push(extractText(node.children[i]));
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}
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return texts.join('');
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} else {
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console.log("extract failed!" + print_r(node));
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throw ("extract failed: " + print_r(node));
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}
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};
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}
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start
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= e:block* newline* {
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var es = [];
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// flatten sub-arrays, as a list block can contain multiple lists
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for(var i = 0, length = e.length; i < length; i++) {
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var ei = e[i];
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if ($.isArray(ei))
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es = es.concat(ei);
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else
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es.push(ei);
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};
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return {
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type: 'page',
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children: es
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}
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}
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anyblock = block / inline
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anyblockline = block / inlineline
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// All chars that cannot start syntactic structures
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text = t:[A-Za-z0-9,._ -]+ { return t.join('') }
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space
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= s:[ \t]+ { return s.join(''); }
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// Start of line
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sol = (newline / & { return pos === 0; } { return true; })
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cn:(comment n:newline? { return n })? {
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return cn;
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}
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newline
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= '\n' / '\r\n'
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block
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= (sol space* &newline)? block_lines
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/ para
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/ comment
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/ sol
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block_lines
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= h
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/ table
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/ lists
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/ pre_indent
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/* Headings */
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h = h1 / h2 / h3 / h4 / h5 / h6
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h1 = sol '='
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(
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& { setFlag('h'); return setFlag('h1') }
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c:inlineline '=' &newline {
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clearFlag('h');
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clearFlag('h1');
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return {
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type: 'heading',
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attributes: {level: 1},
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content: extractInline(c)
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}
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}
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/ { clearFlag('h'); clearFlag('h1'); return null }
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)
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h2 = sol '=='
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(
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& { setFlag('h'); return setFlag('h2') }
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c:inlineline '==' &newline {
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clearFlag('h');
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clearFlag('h2');
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return {
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type: 'heading',
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attributes: {level: 2},
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content: extractInline(c)
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}
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}
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/ { clearFlag('h'); clearFlag('h2'); return null }
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)
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h3 = sol '==='
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(
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& { setFlag('h'); return setFlag('h3') }
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c:inlineline '===' &newline {
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clearFlag('h');
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clearFlag('h3');
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return {
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type: 'heading',
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attributes: {level: 3},
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content: extractInline(c)
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}
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}
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/ { clearFlag('h'); clearFlag('h3'); return null }
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)
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h4 = sol '===='
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(
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& { setFlag('h'); return setFlag('h4') }
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c:inlineline '====' &newline {
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clearFlag('h');
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clearFlag('h4');
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return {
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type: 'heading',
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attributes: {level: 4},
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content: extractInline(c)
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}
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}
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/ { clearFlag('h'); clearFlag('h4'); return null }
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)
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h5 = sol '====='
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(& { setFlag('h'); return setFlag('h5') }
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c:inlineline '=====' &newline {
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clearFlag('h');
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clearFlag('h5');
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return {
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type: 'heading',
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attributes: {level: 5},
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content: extractInline(c)
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}
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}
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/ { clearFlag('h'); clearFlag('h5'); return null }
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)
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h6 = sol '======'
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(& { setFlag('h'); return setFlag('h6') }
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c:inlineline '======' &newline {
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clearFlag('h');
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clearFlag('h6');
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return {
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type: 'heading',
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attributes: {level: 6},
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content: extractInline(c)
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}
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}
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/ { clearFlag('h'); clearFlag('h6'); return null }
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)
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heading_marker
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= '=' '='*
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heading_text
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= h:( !(heading_marker newline) x:inlineline { return x } )* { return h.join(''); }
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// TODO: convert inline content to annotations!
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para
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= (sol br)? para_lines
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para_lines
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= s:sol c:inlineline cs:(!block_lines para_lines)* {
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return {
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type: 'paragraph',
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content: extractInline([s].concat([c]).concat(cs))
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}
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}
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br = space* &newline { return {type: 'br'} }
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pre_indent
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= l:pre_indent_line+ {
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return {
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type: 'pre',
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content: extractInline(l)
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}
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}
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pre_indent_line = sol space l:inlineline { return l }
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// Syntax that stops inline expansion
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inline_breaks
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= //& { console.log(print_r(syntaxFlags)); return true; }
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& { return syntaxFlags['table']; }
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a:(newline [!|] / '||' / '!!' / '|}') { dp("table break" + print_r(a)); return true; }
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/ & { return syntaxFlags['italic']; } italic_marker { return true; }
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/ & { return syntaxFlags['bold']; } bold_marker { return true; }
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/ & { return syntaxFlags['linkdesc']; } link_end { return true; }
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/ & { return syntaxFlags['h']; }
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( & { return syntaxFlags['h1'] } '=' newline { return true; }
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/ & { return syntaxFlags['h2'] } '==' newline { return true; }
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/ & { return syntaxFlags['h3'] } '===' newline { return true; }
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/ & { return syntaxFlags['h4'] } '====' newline { return true; }
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/ & { return syntaxFlags['h5'] } '=====' newline { return true; }
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/ & { return syntaxFlags['h6'] } '======' newline { return true; }
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)
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inline
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= c:(text / inline_element / (!inline_breaks ch:. { return ch; }))+ {
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var out = [];
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var text = '';
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for (var i = 0; i < c.length; i++) {
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if (typeof c[i] == 'string') {
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text += c[i];
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} else {
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if (text.length) {
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out.push({
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type: 'text',
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text: text
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});
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text = '';
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}
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out.push(c[i]);
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}
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}
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if (text.length) {
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out.push({
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type: 'text',
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text: text
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});
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}
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return out;
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}
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inlineline
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= c:(text / !inline_breaks (inline_element / [^\n]))+ {
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var out = [];
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var text = '';
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//dp("inlineline: " + print_r(c));
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for (var i = 0; i < c.length; i++) {
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if (typeof c[i] == 'string') {
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text += c[i];
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} else {
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if (text.length) {
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out.push({
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type: 'text',
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text: text
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});
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text = '';
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}
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out.push(c[i]);
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}
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}
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if (text.length) {
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out.push({
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text: text,
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//annotations: []
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});
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}
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return out;
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}
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/* TODO: convert all these to annotations!
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* -> need (start, end) offsets within block
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*/
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inline_element
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= comment
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/ xmlish_tag
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/ extlink
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/ template
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/ link
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/ bold
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/ italic
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comment
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= '<!--' c:comment_chars* '-->'
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(space* newline space* comment)* {
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return {
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type: 'comment',
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text: c.join('')
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}
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}
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comment_chars
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= c:[^-] { return c; }
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/ c:'-' !'->' { return c; }
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extlink
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= "[" target:url " " text:extlink_text "]" {
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return {
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type: 'extlink',
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target: target,
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text: text
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}
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}
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// = "[" target:url text:extlink_text "]" { return { type: 'extlink', target: target, text: text } }
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url
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= proto:"http:" rest:([^ \]]+) { return proto + rest.join(''); }
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extlink_text
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= c:[^\]]+ { return c.join(''); }
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template
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= "{{" target:link_target params:("|" p:template_param { return p })* "}}" {
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var obj = {
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type: 'template',
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target: target
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};
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if (params && params.length) {
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obj.params = params;
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}
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return obj;
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}
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template_param
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= name:template_param_name "=" c:template_param_text {
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return {
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name: name,
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content: c
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};
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} / c:template_param_text {
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return {
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content: c
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};
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}
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tplarg
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= "{{{" name:link_target params:("|" p:template_param { return p })* "}}}" {
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var obj = {
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type: 'tplarg',
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name: name
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};
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if (params && params.length) {
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obj.params = params;
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}
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return obj;
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}
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template_param_name
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= h:( !"}}" x:([^=|]) { return x } )* { return h.join(''); }
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template_param_text
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= template_param_text_chunk*
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/* = h:( !"}}" x:([^|]) { return x } )* { return h.join(''); }*/
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template_param_text_chunk
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= comment
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/ xmlish_tag
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/ extlink
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/ template
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/ link
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/ bold
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/ italic
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/ !"}}" x:([^|]) { return x }
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link
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= "[[" target:link_target text:("|" link_text)* "]]" {
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var obj = {
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type: 'link',
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target: target
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};
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if (text && text.length) {
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obj.text = text[0][1]; // ehhhh
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}
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return obj;
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}
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link_target
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= h:( !"]]" x:([^|]) { return x } )* { return h.join(''); }
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link_text
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= h:( & { return setFlag('linkdesc'); }
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x:inlineline { return x }
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)* {
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clearFlag('linkdesc')
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return h.join('');
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}
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/ & { clearFlag('linkdesc') } { return null; }
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link_end = "]]"
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bold
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= bold_marker
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& { dp('benter:' + pos); return setFlag('bold'); }
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c:inlineline
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bold_marker {
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clearFlag('bold');
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return {
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type: 'b',
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content: {text: c}
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}
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}
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/ bold_marker { clearFlag('bold'); return null }
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bold_marker
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= "'''"
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italic
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= italic_marker
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& { dp('ienter:' + pos); return setFlag('italic'); }
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c:inlineline
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italic_marker {
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clearFlag('italic');
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dp('ileave:' + pos);
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return {
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type: 'i',
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content: {text: c}
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}
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}
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/ italic_marker { clearFlag('italic'); return null }
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italic_marker
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= "''"
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/* Will need to check anything xmlish agains known/allowed HTML tags and
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* registered extensions, otherwise fail the match. Should ref be treated as a
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* regular extension? */
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xmlish_tag = ref / references
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ref = ref_full / ref_empty
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/* Can we do backreferences to genericize this? */
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ref_full
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= start:ref_start ">" content:ref_content* close:ref_end {
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return {
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type: 'ext',
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name: 'ref',
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params: start.params,
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ws: start.ws,
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content: content,
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close: close
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}
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}
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ref_empty
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= start:ref_start close:(space* "/>") {
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return {
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type: 'ext',
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name: 'ref',
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ws: start.ws,
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params: start.params,
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close: close
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}
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}
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ref_start
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= "<ref" params:ext_param* ws:space* {
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return {
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params: params,
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ws: ws
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};
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}
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ref_end
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= all:("</ref" space* ">") {
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return all.join('');
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}
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ref_content
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= !ref_end a:(inline) {
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return a;
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}
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/* fixme probably have to programatically add these */
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references = references_full / references_empty
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references_full
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= start:references_start ">" content:references_content* close:references_end {
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return {
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type: 'ext',
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name: 'references',
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params: start.params,
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ws: start.ws,
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content: content,
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close: close
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}
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}
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references_empty
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= start:references_start close:(space* "/>") {
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return {
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type: 'ext',
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name: 'references',
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ws: start.ws,
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params: start.params,
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close: close
|
|
}
|
|
}
|
|
|
|
references_start
|
|
= "<references" params:ext_param* ws:space* {
|
|
return {
|
|
params: params,
|
|
ws: ws
|
|
};
|
|
}
|
|
|
|
references_end
|
|
= all:("</references" space* ">") {
|
|
return all.join('');
|
|
}
|
|
|
|
references_content
|
|
= !references_end a:(inline) {
|
|
return a;
|
|
}
|
|
|
|
|
|
ext_param
|
|
= space* name:ext_param_name "=" val:ext_param_val {
|
|
val.name = name;
|
|
return val;
|
|
}
|
|
|
|
ext_param_name
|
|
= name:[a-zA-Z0-9-]+ {
|
|
return name.join('');
|
|
}
|
|
|
|
ext_param_val
|
|
= t:[0-9A-Za-z]+ { return {text: t.join('') } }
|
|
/ "'" t:[^'>]+ "'" { return { quote: "'", text: t.join('') } }
|
|
/ '"' t:[^">]+ '"' { return { quote: '"', text: t.join('') } }
|
|
|
|
lists = es:(dtdd / li)+
|
|
{
|
|
// Flatten es
|
|
var esLen = es.length;
|
|
var flatEs = [];
|
|
for (var i = 0; i < esLen; i++) {
|
|
var ei = es[i];
|
|
if ($.isArray(ei)) {
|
|
flatEs = flatEs.concat(ei);
|
|
} else {
|
|
flatEs.push(ei);
|
|
}
|
|
}
|
|
return {
|
|
type: 'list',
|
|
children: flatEs
|
|
}
|
|
}
|
|
|
|
li = sol
|
|
bullets:list_char+
|
|
c:inlineline
|
|
&newline
|
|
{
|
|
return {
|
|
type: 'listItem',
|
|
attributes: {
|
|
styles: bulletsToTypes(bullets)
|
|
},
|
|
content: extractInline(c)
|
|
};
|
|
}
|
|
|
|
dtdd = sol
|
|
bullets:list_char+
|
|
c:(inline_element / [^:\n])+
|
|
":"
|
|
d:(inline_element / [^\n])+
|
|
&newline
|
|
{
|
|
// reject rule if bullets do not end in semicolon
|
|
if (bullets[bullets.length - 1] != ';') {
|
|
return null;
|
|
} else {
|
|
return [
|
|
{
|
|
type: 'listItem',
|
|
attributes: {styles: bulletsToTypes(bullets)},
|
|
content: extractInline(c)
|
|
}, {
|
|
type: 'listItem',
|
|
attributes: {styles: bulletsToTypes(
|
|
bullets.slice(0, bullets.length - 1) + ':')},
|
|
content: extractInline(d)
|
|
}
|
|
]
|
|
}
|
|
}
|
|
|
|
|
|
list_char = [*#:;]
|
|
|
|
|
|
/* Tables */
|
|
|
|
table
|
|
= tas:table_start c:table_caption? b:table_body? table_end {
|
|
var res = {type: 'table'}
|
|
var body = b !== '' ? b : [];
|
|
if (c !== '') {
|
|
res.children = [c].concat(body);
|
|
} else {
|
|
res.children = body;
|
|
}
|
|
if (tas.length > 0) {
|
|
// FIXME: actually parse and build structure
|
|
res.attributes = { unparsed: tas }
|
|
}
|
|
//dp(print_r(res));
|
|
return res;
|
|
}
|
|
|
|
table_start
|
|
= sol
|
|
"{|"
|
|
& { setFlag('table'); return true; }
|
|
ta:table_attribs*
|
|
space* {
|
|
//dp("table_start " + print_r(ta) + ", pos:" + pos);
|
|
return ta;
|
|
}
|
|
/ sol "{|" { clearFlag('table'); return null; }
|
|
|
|
table_attribs
|
|
= text / ! inline_breaks !newline .
|
|
|
|
table_caption
|
|
= newline
|
|
"|+" c:inline* {
|
|
return {
|
|
type: 'tableCaption',
|
|
content: c[0]
|
|
}
|
|
}
|
|
|
|
table_body
|
|
= & { dp("table_body enter"); return true; }
|
|
firstrow:table_firstrow otherrows:table_row* {
|
|
/* dp('table first and otherrows: '
|
|
* + print_r([firstrow].concat(otherrows))); */
|
|
return [firstrow].concat(otherrows);
|
|
}
|
|
/ otherrows:table_row* {
|
|
//dp('table otherrows: ' + print_r(otherrows));
|
|
return otherrows;
|
|
}
|
|
|
|
table_firstrow
|
|
= td:table_data+ {
|
|
return {
|
|
type: 'tableRow',
|
|
children: td
|
|
};
|
|
}
|
|
|
|
table_row
|
|
= & { dp("table row enter"); return true; }
|
|
newline
|
|
"|-" thtd_attribs? space* td:(table_data / table_header)* {
|
|
return {
|
|
type: 'tableRow',
|
|
children: td
|
|
};
|
|
}
|
|
|
|
table_data
|
|
= & { dp("table_data enter, pos=" + pos); return true; }
|
|
("||" / newline "|")
|
|
! [}+-]
|
|
a:thtd_attribs?
|
|
td:(!inline_breaks anyblock)* {
|
|
dp("table data result: " + print_r(td) + ", attribts: " + print_r(a));
|
|
return {
|
|
type: 'tableCell',
|
|
attributes: { unparsed: a },
|
|
children: td
|
|
};
|
|
}
|
|
|
|
table_header
|
|
= ("!!" / newline "!")
|
|
a:thtd_attribs?
|
|
c:inline {
|
|
return {
|
|
type: 'tableHeading',
|
|
attributes: { unparsed: a },
|
|
children: c
|
|
}
|
|
}
|
|
|
|
thtd_attribs
|
|
// In particular, do not match [|\n]
|
|
= a:(text / ! inline_breaks [="':;/,.-] )+ "|" ! [|}+-] {
|
|
return a;
|
|
}
|
|
|
|
|
|
table_end = newline? "|}" { clearFlag('table'); }
|
|
|
|
|
|
/* Wikidom TODO:
|
|
* split off text into content nodes
|
|
* convert inlines into annotations
|
|
* change contents into children
|
|
*/
|
|
|
|
/* Tabs do not mix well with the hybrid production syntax */
|
|
/* vim: et:ts=4:sw=4:cindent */
|