visit(ast, function (node) {
var children = node.children;
var head = children && children[0];
var tail = children && children[children.length - 1];
if (position.generated(node)) {
return;
}
if (head && !position.generated(head)) {
/*
* Compare parent and first child.
*/
compare(position.start(node), position.start(head), 0);
/*
* Compare between each child.
*/
children.forEach(function (child, index) {
var prev = children[index - 1];
var max = MAX;
if (
!prev ||
position.generated(prev) ||
position.generated(child)
) {
return;
}
if (
(
prev.type === 'list' &&
child.type === 'list'
) ||
(
child.type === 'code' &&
prev.type === 'list' &&
!child.lang
)
) {
max++;
}
compare(position.end(prev), position.start(child), max);
});
/*
* Compare parent and last child.
*/
if (tail !== head && !position.generated(tail)) {
compare(position.end(node), position.end(tail), 1);
}
}
});
children.forEach(function (child, index) {
var prev = children[index - 1];
var max = MAX;
if (
!prev ||
position.generated(prev) ||
position.generated(child)
) {
return;
}
if (
(
prev.type === 'list' &&
child.type === 'list'
) ||
(
child.type === 'code' &&
prev.type === 'list' &&
!child.lang
)
) {
max++;
}
compare(position.end(prev), position.start(child), max);
});
visit(ast, 'emphasis', function (node) {
var marker = file.toString().charAt(position.start(node).offset);
if (position.generated(node)) {
return;
}
if (preferred) {
if (marker !== preferred) {
file.warn('Emphasis should use `' + preferred + '` as a marker', node);
}
} else {
preferred = marker;
}
});
visit(ast, 'break', function (node) {
var start = position.start(node).offset;
var end = position.end(node).offset;
var value;
if (position.generated(node)) {
return;
}
value = contents.slice(start, end).split('\n', 1)[0];
if (value.length > 2) {
file.warn('Use two spaces for hard line breaks', node);
}
});
visit(ast, function (node, index, parent) {
var next = parent && parent.children[index + 1];
if (position.generated(node)) {
return;
}
if (
next &&
isApplicable(node) &&
isApplicable(next) &&
position.start(next).line === position.end(node).line + 1
) {
file.warn('Missing blank line before block node', next);
}
});
visit(ast, 'heading', function (node) {
var pos;
if (position.generated(node)) {
return;
}
if (node.depth === style) {
if (topLevelheading) {
pos = position.start(node);
file.warn('Don’t use multiple top level headings (' + pos.line + ':' + pos.column + ')', node);
}
topLevelheading = node;
}
});
/**
* Check `node`.
*
* @param {Node} node - Node.
*/
function validate(node) {
var duplicate = map[node.identifier];
var pos;
if (position.generated(node)) {
return;
}
if (duplicate && duplicate.type) {
pos = position.start(duplicate);
file.warn(
'Do not use definitions with the same identifier (' +
pos.line + ':' + pos.column + ')',
node
);
}
map[node.identifier] = node;
}