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// heading (#, ##, ...)
'use strict';
var isSpace = require('../common/utils').isSpace;
module.exports = function heading(state, startLine, endLine, silent) {
var ch, level, tmp, token,
pos = state.bMarks[startLine] + state.tShift[startLine],
max = state.eMarks[startLine];
// if it's indented more than 3 spaces, it should be a code block
if (state.sCount[startLine] - state.blkIndent >= 4) { return false; }
ch = state.src.charCodeAt(pos);
if (ch !== 0x23/* # */ || pos >= max) { return false; }
// count heading level
level = 1;
ch = state.src.charCodeAt(++pos);
while (ch === 0x23/* # */ && pos < max && level <= 6) {
level++;
ch = state.src.charCodeAt(++pos);
}
if (level > 6 || (pos < max && !isSpace(ch))) { return false; }
if (silent) { return true; }
// Let's cut tails like ' ### ' from the end of string
max = state.skipSpacesBack(max, pos);
tmp = state.skipCharsBack(max, 0x23, pos); // #
if (tmp > pos && isSpace(state.src.charCodeAt(tmp - 1))) {
max = tmp;
}
state.line = startLine + 1;
token = state.push('heading_open', 'h' + String(level), 1);
token.markup = '########'.slice(0, level);
token.map = [ startLine, state.line ];
token = state.push('inline', '', 0);
token.content = state.src.slice(pos, max).trim();
token.map = [ startLine, state.line ];
token.children = [];
token = state.push('heading_close', 'h' + String(level), -1);
token.markup = '########'.slice(0, level);
return true;
};
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