+++ /dev/null
-/**
- * Helper to test CodeMirror highlighting modes. It pretty prints output of the
- * highlighter and can check against expected styles.
- *
- * Mode tests are registered by calling test.mode(testName, mode,
- * tokens), where mode is a mode object as returned by
- * CodeMirror.getMode, and tokens is an array of lines that make up
- * the test.
- *
- * These lines are strings, in which styled stretches of code are
- * enclosed in brackets `[]`, and prefixed by their style. For
- * example, `[keyword if]`. Brackets in the code itself must be
- * duplicated to prevent them from being interpreted as token
- * boundaries. For example `a[[i]]` for `a[i]`. If a token has
- * multiple styles, the styles must be separated by ampersands, for
- * example `[tag&error </hmtl>]`.
- *
- * See the test.js files in the css, markdown, gfm, and stex mode
- * directories for examples.
- */
-(function() {
- function findSingle(str, pos, ch) {
- for (;;) {
- var found = str.indexOf(ch, pos);
- if (found == -1) return null;
- if (str.charAt(found + 1) != ch) return found;
- pos = found + 2;
- }
- }
-
- var styleName = /[\w&-_]+/g;
- function parseTokens(strs) {
- var tokens = [], plain = "";
- for (var i = 0; i < strs.length; ++i) {
- if (i) plain += "\n";
- var str = strs[i], pos = 0;
- while (pos < str.length) {
- var style = null, text;
- if (str.charAt(pos) == "[" && str.charAt(pos+1) != "[") {
- styleName.lastIndex = pos + 1;
- var m = styleName.exec(str);
- style = m[0].replace(/&/g, " ");
- var textStart = pos + style.length + 2;
- var end = findSingle(str, textStart, "]");
- if (end == null) throw new Error("Unterminated token at " + pos + " in '" + str + "'" + style);
- text = str.slice(textStart, end);
- pos = end + 1;
- } else {
- var end = findSingle(str, pos, "[");
- if (end == null) end = str.length;
- text = str.slice(pos, end);
- pos = end;
- }
- text = text.replace(/\[\[|\]\]/g, function(s) {return s.charAt(0);});
- tokens.push(style, text);
- plain += text;
- }
- }
- return {tokens: tokens, plain: plain};
- }
-
- test.mode = function(name, mode, tokens, modeName) {
- var data = parseTokens(tokens);
- return test((modeName || mode.name) + "_" + name, function() {
- return compare(data.plain, data.tokens, mode);
- });
- };
-
- function compare(text, expected, mode) {
-
- var expectedOutput = [];
- for (var i = 0; i < expected.length; i += 2) {
- var sty = expected[i];
- if (sty && sty.indexOf(" ")) sty = sty.split(' ').sort().join(' ');
- expectedOutput.push(sty, expected[i + 1]);
- }
-
- var observedOutput = highlight(text, mode);
-
- var pass, passStyle = "";
- pass = highlightOutputsEqual(expectedOutput, observedOutput);
- passStyle = pass ? 'mt-pass' : 'mt-fail';
-
- var s = '';
- if (pass) {
- s += '<div class="mt-test ' + passStyle + '">';
- s += '<pre>' + text.replace('&', '&').replace('<', '<') + '</pre>';
- s += '<div class="cm-s-default">';
- s += prettyPrintOutputTable(observedOutput);
- s += '</div>';
- s += '</div>';
- return s;
- } else {
- s += '<div class="mt-test ' + passStyle + '">';
- s += '<pre>' + text.replace('&', '&').replace('<', '<') + '</pre>';
- s += '<div class="cm-s-default">';
- s += 'expected:';
- s += prettyPrintOutputTable(expectedOutput);
- s += 'observed:';
- s += prettyPrintOutputTable(observedOutput);
- s += '</div>';
- s += '</div>';
- throw s;
- }
- }
-
- /**
- * Emulation of CodeMirror's internal highlight routine for testing. Multi-line
- * input is supported.
- *
- * @param string to highlight
- *
- * @param mode the mode that will do the actual highlighting
- *
- * @return array of [style, token] pairs
- */
- function highlight(string, mode) {
- var state = mode.startState()
-
- var lines = string.replace(/\r\n/g,'\n').split('\n');
- var st = [], pos = 0;
- for (var i = 0; i < lines.length; ++i) {
- var line = lines[i], newLine = true;
- var stream = new CodeMirror.StringStream(line);
- if (line == "" && mode.blankLine) mode.blankLine(state);
- /* Start copied code from CodeMirror.highlight */
- while (!stream.eol()) {
- var style = mode.token(stream, state), substr = stream.current();
- if (style && style.indexOf(" ") > -1) style = style.split(' ').sort().join(' ');
-
- stream.start = stream.pos;
- if (pos && st[pos-2] == style && !newLine) {
- st[pos-1] += substr;
- } else if (substr) {
- st[pos++] = style; st[pos++] = substr;
- }
- // Give up when line is ridiculously long
- if (stream.pos > 5000) {
- st[pos++] = null; st[pos++] = this.text.slice(stream.pos);
- break;
- }
- newLine = false;
- }
- }
-
- return st;
- }
-
- /**
- * Compare two arrays of output from highlight.
- *
- * @param o1 array of [style, token] pairs
- *
- * @param o2 array of [style, token] pairs
- *
- * @return boolean; true iff outputs equal
- */
- function highlightOutputsEqual(o1, o2) {
- if (o1.length != o2.length) return false;
- for (var i = 0; i < o1.length; ++i)
- if (o1[i] != o2[i]) return false;
- return true;
- }
-
- /**
- * Print tokens and corresponding styles in a table. Spaces in the token are
- * replaced with 'interpunct' dots (·).
- *
- * @param output array of [style, token] pairs
- *
- * @return html string
- */
- function prettyPrintOutputTable(output) {
- var s = '<table class="mt-output">';
- s += '<tr>';
- for (var i = 0; i < output.length; i += 2) {
- var style = output[i], val = output[i+1];
- s +=
- '<td class="mt-token">' +
- '<span class="cm-' + String(style).replace(/ +/g, " cm-") + '">' +
- val.replace(/ /g,'\xb7').replace('&', '&').replace('<', '<') +
- '</span>' +
- '</td>';
- }
- s += '</tr><tr>';
- for (var i = 0; i < output.length; i += 2) {
- s += '<td class="mt-style"><span>' + (output[i] || null) + '</span></td>';
- }
- s += '</table>';
- return s;
- }
-})();
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