mirror of
https://github.com/RGBCube/serenity
synced 2025-05-14 11:44:58 +00:00
2227a80f34
This patch adds contexts to line iterator for nesting list items and blockquotes. It also incidentally makes the api for LineIterator simpler, and will make it easier to add other containers in the future.
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2021, Peter Elliott <pelliott@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Format.h>
|
|
#include <LibMarkdown/LineIterator.h>
|
|
|
|
namespace Markdown {
|
|
|
|
void LineIterator::reset_ignore_prefix()
|
|
{
|
|
for (auto& context : m_context_stack) {
|
|
context.ignore_prefix = false;
|
|
}
|
|
}
|
|
|
|
Optional<StringView> LineIterator::match_context(StringView const& line) const
|
|
{
|
|
bool is_ws = line.is_whitespace();
|
|
size_t offset = 0;
|
|
for (auto& context : m_context_stack) {
|
|
switch (context.type) {
|
|
case Context::Type::ListItem:
|
|
if (is_ws)
|
|
break;
|
|
|
|
if (offset + context.indent > line.length())
|
|
return {};
|
|
|
|
if (!context.ignore_prefix && !line.substring_view(offset, context.indent).is_whitespace())
|
|
return {};
|
|
|
|
offset += context.indent;
|
|
|
|
break;
|
|
case Context::Type::BlockQuote:
|
|
for (; offset < line.length() && line[offset] == ' '; ++offset) { }
|
|
if (offset >= line.length() || line[offset] != '>') {
|
|
return {};
|
|
}
|
|
++offset;
|
|
break;
|
|
}
|
|
|
|
if (offset > line.length())
|
|
return {};
|
|
}
|
|
return line.substring_view(offset);
|
|
}
|
|
|
|
bool LineIterator::is_end() const
|
|
{
|
|
return m_iterator.is_end() || !match_context(*m_iterator).has_value();
|
|
}
|
|
|
|
StringView LineIterator::operator*() const
|
|
{
|
|
auto line = match_context(*m_iterator);
|
|
VERIFY(line.has_value());
|
|
return line.value();
|
|
}
|
|
|
|
}
|