forked from Open-CT/openct-tasks
85 lines
3.0 KiB
JavaScript
85 lines
3.0 KiB
JavaScript
/*
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* The MIT License
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*
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* Copyright 2011 Greg.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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function formatGrammar(grammar) {
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var result = "<div>" + Item.prototype.grammarType + " grammar ('' is ε):</div>";
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result += "<table><tbody><tr>";
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result += "<td><textarea style=\"text-align: right; border: 0; color: green; background-color: #F0F0F0\" id=\"ruleIndices\" rows=\"25\" cols=\"3\" readonly=\"true\">";
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result += "</textarea></td>";
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result += "<td><textarea id=\"grammar\" rows=\"25\" cols=\"20\" onfocus=\"$('ruleIndices').value = ''\" onblur=\"displayRuleIndices();\" onchange=\"grammarChanged();\">";
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for (var i in grammar.rules) {
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result += grammar.rules[i] + "\n";
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}
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result += "</textarea></td>";
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result += "</tr></tbody></table>";
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return result;
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}
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function displayRuleIndices() {
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var rules = $('grammar').value.split('\n');
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var ruleIndex = 0;
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$('ruleIndices').value = "";
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for (var i in rules) {
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if (rules[i].trim() != '') {
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$('ruleIndices').value += "(" + (ruleIndex++) + ")";
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}
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$('ruleIndices').value += "\n";
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}
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}
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function formatFirstFollow(grammar) {
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var result = "<table border=\"1\">";
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if (Item.prototype.grammarType == 'SLR') {
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result += "<thead><tr><th colspan=\"3\">FIRST / FOLLOW table</th></tr><tr><th>Nonterminal</th><th>FIRST</th><th>FOLLOW</th></thead>"
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result += "<tbody>";
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for (var i in grammar.nonterminals) {
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var nonterminal = grammar.nonterminals[i];
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result += "<tr><td>" + nonterminal + "</td><td>{" + grammar.firsts[nonterminal] + "}</td><td>{" + grammar.follows[nonterminal] + "}</td></tr>";
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}
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} else {
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result += "<thead><tr><th colspan=\"2\">FIRST table</th></tr><tr><th>Nonterminal</th><th>FIRST</th></thead>"
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result += "<tbody>";
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for (var i in grammar.nonterminals) {
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var nonterminal = grammar.nonterminals[i];
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result += "<tr><td>" + nonterminal + "</td><td>{" + grammar.firsts[nonterminal] + "}</td></tr>";
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}
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}
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result += "</tbody>"
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result += "</table>";
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return result;
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}
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