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246 lines
6.2 KiB
246 lines
6.2 KiB
// Lists
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'use strict';
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var isEmpty = require('../helpers').isEmpty;
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var skipSpaces = require('../helpers').skipSpaces;
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// Search `[-+*][\n ]`, returns next pos arter marker on success
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// or -1 on fail.
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function skipBulletListMarker(state, startLine) {
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var marker, pos, max;
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pos = state.bMarks[startLine] + state.tShift[startLine];
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max = state.eMarks[startLine];
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if (pos >= max) { return -1; }
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marker = state.src.charCodeAt(pos++);
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// Check bullet
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if (marker !== 0x2A/* * */ &&
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marker !== 0x2D/* - */ &&
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marker !== 0x2B/* + */) {
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return -1;
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}
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if (pos < max && state.src.charCodeAt(pos) !== 0x20) {
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// " 1.test " - is not a list item
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return -1;
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}
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return pos;
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}
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// Search `\d+[.)][\n ]`, returns next pos arter marker on success
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// or -1 on fail.
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function skipOrderedListMarker(state, startLine) {
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var ch,
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pos = state.bMarks[startLine] + state.tShift[startLine],
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max = state.eMarks[startLine];
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if (pos + 1 >= max) { return -1; }
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ch = state.src.charCodeAt(pos++);
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if (ch < 0x30/* 0 */ || ch > 0x39/* 9 */) { return -1; }
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for (;;) {
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// EOL -> fail
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if (pos >= max) { return -1; }
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ch = state.src.charCodeAt(pos++);
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if (ch >= 0x30/* 0 */ && ch <= 0x39/* 9 */) {
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continue;
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}
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// found valid marker
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if (ch === 0x29/* ) */ || ch === 0x2e/* . */) {
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break;
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}
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return -1;
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}
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if (pos < max && state.src.charCodeAt(pos) !== 0x20/* space */) {
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// " 1.test " - is not a list item
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return -1;
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}
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return pos;
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}
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module.exports = function list(state, startLine, endLine, silent) {
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var nextLine,
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indent,
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oldTShift,
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oldIndent,
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oldTight,
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oldListMode,
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start,
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posAfterMarker,
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max,
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indentAfterMarker,
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markerValue,
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markerCharCode,
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isOrdered,
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contentStart,
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listTokIdx,
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prevEmptyEnd,
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terminatorRules = state.parser._rulesListTerm, i, l, terminate;
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// Detect list type and position after marker
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if ((posAfterMarker = skipOrderedListMarker(state, startLine)) >= 0) {
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isOrdered = true;
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} else if ((posAfterMarker = skipBulletListMarker(state, startLine)) >= 0) {
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isOrdered = false;
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} else {
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return false;
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}
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if (state.level >= state.options.level) { return false; }
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// We should terminate list on style change. Remember first one to compare.
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markerCharCode = state.src.charCodeAt(posAfterMarker - 1);
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// For validation mode we can terminate immediately
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if (silent) { return true; }
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// Start list
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listTokIdx = state.tokens.length;
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if (isOrdered) {
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start = state.bMarks[startLine] + state.tShift[startLine];
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markerValue = Number(state.src.substr(start, posAfterMarker - start - 1));
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state.tokens.push({
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type: 'ordered_list_open',
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order: markerValue,
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tight: true,
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level: state.level++
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});
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} else {
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state.tokens.push({
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type: 'bullet_list_open',
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tight: true,
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level: state.level++
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});
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}
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//
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// Iterate list items
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//
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nextLine = startLine;
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prevEmptyEnd = false;
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while (nextLine < endLine) {
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contentStart = skipSpaces(state, posAfterMarker);
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max = state.eMarks[nextLine];
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if (contentStart >= max) {
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// trimming space in "- \n 3" case, indent is 1 here
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indentAfterMarker = 1;
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} else {
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indentAfterMarker = contentStart - posAfterMarker;
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}
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// If we have more than 4 spaces, the indent is 1
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// (the rest is just indented code block)
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if (indentAfterMarker > 4) { indentAfterMarker = 1; }
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// If indent is less than 1, assume that it's one, example:
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// "-\n test"
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if (indentAfterMarker < 1) { indentAfterMarker = 1; }
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// " - test"
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// ^^^^^ - calculating total length of this thing
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indent = (posAfterMarker - state.bMarks[nextLine]) + indentAfterMarker;
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// Run subparser & write tokens
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state.tokens.push({ type: 'list_item_open', level: state.level++ });
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//nextLine++;
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oldIndent = state.blkIndent;
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oldTight = state.tight;
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oldTShift = state.tShift[startLine];
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oldListMode = state.listMode;
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state.tShift[startLine] = contentStart - state.bMarks[startLine];
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state.blkIndent = indent;
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state.tight = true;
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state.listMode = true;
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state.parser.tokenize(state, startLine, endLine, true);
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// If any of list item is tight, mark list as tight
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if (!state.tight || prevEmptyEnd) {
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state.tokens[listTokIdx].tight = false;
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}
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// Item become loose if finish with empty line,
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// but we should filter last element, because it means list finish
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prevEmptyEnd = (state.line - startLine) > 1 && isEmpty(state, state.line - 1);
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state.blkIndent = oldIndent;
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state.tShift[startLine] = oldTShift;
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state.tight = oldTight;
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state.listMode = oldListMode;
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state.tokens.push({ type: 'list_item_close', level: --state.level });
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nextLine = startLine = state.line;
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contentStart = state.bMarks[startLine];
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if (nextLine >= endLine) { break; }
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if (isEmpty(state, nextLine)) {
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if (nextLine >= endLine || isEmpty(state, nextLine)) {
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// two newlines end the list
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break;
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} else {
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nextLine++;
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}
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}
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//
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// Try to check if list is terminated or continued.
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//
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if (state.tShift[nextLine] < state.blkIndent) { break; }
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if (state.bqMarks[nextLine] < state.bqLevel) { break; }
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// fail if terminating block found
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terminate = false;
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for (i = 0, l = terminatorRules.length; i < l; i++) {
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if (terminatorRules[i](state, nextLine, endLine, true)) {
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terminate = true;
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break;
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}
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}
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if (terminate) { break; }
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// fail if list has another type
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if (isOrdered) {
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posAfterMarker = skipOrderedListMarker(state, nextLine);
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if (posAfterMarker < 0) { break; }
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} else {
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posAfterMarker = skipBulletListMarker(state, nextLine);
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if (posAfterMarker < 0) { break; }
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}
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if (markerCharCode !== state.src.charCodeAt(posAfterMarker - 1)) { break; }
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}
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// Finilize list
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if (isOrdered) {
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state.tokens.push({ type: 'ordered_list_close', level: --state.level });
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} else {
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state.tokens.push({ type: 'bullet_list_close', level: --state.level });
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}
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state.line = nextLine;
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return true;
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};
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