Function parseListMarker

src/commonmark.js:128–190

(parser, container)

// Parse a list marker and return data on the marker (type,
// start, delimiter, bullet character, padding) or null.
var parseListMarker = function(parser, container) {
    var rest = parser.currentLine.slice(parser.nextNonspace);
    var match;
    var nextc;
    var spacesStartCol;
    var spacesStartOffset;
    var data = { type: null,
                 tight: true,  // lists are tight by default
                 bulletChar: null,
                 start: null,
                 delimiter: null,
                 padding: null,
                 markerOffset: parser.indent };
    if ((match = rest.match(reBulletListMarker))) {
        data.type = 'bullet';
        data.bulletChar = match[0][0];

    } else if ((match = rest.match(reOrderedListMarker)) &&
                (container.type !== 'paragraph' ||
                 match[1] === '1')) {
        data.type = 'ordered';
        data.start = parseInt(match[1]);
        data.delimiter = match[2];
    } else {
        return null;
    }
    // make sure we have spaces after
    nextc = peek(parser.currentLine, parser.nextNonspace + match[0].length);
    if (!(nextc === -1 || nextc === C_TAB || nextc === C_SPACE)) {
        return null;
    }

    // if it interrupts paragraph, make sure first line isn't blank
    if (container.type === 'paragraph' && !parser.currentLine.slice(parser.nextNonspace + match[0].length).match(reNonSpace)) {
        return null;
    }

    // we've got a match! advance offset and calculate padding
    parser.advanceNextNonspace(); // to start of marker
    parser.advanceOffset(match[0].length, true); // to end of marker
    spacesStartCol = parser.column;
    spacesStartOffset = parser.offset;
    do {
        parser.advanceOffset(1, true);
        nextc = peek(parser.currentLine, parser.offset);
    } while (parser.column - spacesStartCol < 5 &&
           isSpaceOrTab(nextc));
    var blank_item = peek(parser.currentLine, parser.offset) === -1;
    var spaces_after_marker = parser.column - spacesStartCol;
    if (spaces_after_marker >= 5 ||
        spaces_after_marker < 1 ||
        blank_item) {
        data.padding = match[0].length + 1;
        parser.column = spacesStartCol;
        parser.offset = spacesStartOffset;
        if (isSpaceOrTab(peek(parser.currentLine, parser.offset))) {
            parser.advanceOffset(1, true);
        }