Function parse_math

libraries/hoedown/src/document.c:718–757

parse_math • parses a math span until the given ending delimiter */

/* parse_math • parses a math span until the given ending delimiter */
static size_t
parse_math(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offset, size_t size, const char *end, size_t delimsz, int displaymode)
{
    hoedown_buffer text = { NULL, 0, 0, 0, NULL, NULL, NULL };
    size_t i = delimsz;

    if (!doc->md.math)
        return 0;

    /* find ending delimiter */
    while (1) {
        while (i < size && data[i] != (uint8_t)end[0])
            i++;

        if (i >= size)
            return 0;

        if (!is_escaped(data, i) && !(i + delimsz > size)
            && memcmp(data + i, end, delimsz) == 0)
            break;

        i++;
    }

    /* prepare buffers */
    text.data = data + delimsz;
    text.size = i - delimsz;

    /* if this is a $$ and MATH_EXPLICIT is not active,
     * guess whether displaymode should be enabled from the context */
    i += delimsz;
    if (delimsz == 2 && !(doc->ext_flags & HOEDOWN_EXT_MATH_EXPLICIT))
        displaymode = is_empty_all(data - offset, offset) && is_empty_all(data + i, size - i);

    /* call callback */
    if (doc->md.math(ob, &text, displaymode, &doc->data))
        return i;

    return 0;
}

/* char_emphasis • single and double emphasis parsing */
static size_t