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LibMarkdown: Refactor Document's parser into ContainerBlock

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This will better allow us too do things like have Lists and blockquotes
support multiple blocks.
This commit is contained in:
Peter Elliott 2021-09-19 11:04:24 -06:00 • committed by Ali Mohammad Pur
parent 4fa5748093
commit cd560d3ae3
5 changed files with 143 additions and 71 deletions
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72
Userland/Libraries/LibMarkdown/Document.cpp
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@ -38,85 +38,19 @@ String Document::render_to_html() const
String Document::render_to_inline_html() const
{
StringBuilder builder;
for (auto& block : m_blocks) {
auto s = block.render_to_html();
builder.append(s);
}
return builder.build();
return m_container->render_to_html();
}
String Document::render_for_terminal(size_t view_width) const
{
StringBuilder builder;
for (auto& block : m_blocks) {
auto s = block.render_for_terminal(view_width);
builder.append(s);
}
return builder.build();
}
template<typename BlockType>
static bool helper(Vector<StringView>::ConstIterator& lines, NonnullOwnPtrVector<Block>& blocks)
{
OwnPtr<BlockType> block = BlockType::parse(lines);
if (!block)
return false;
blocks.append(block.release_nonnull());
return true;
return m_container->render_for_terminal(view_width);
}
OwnPtr<Document> Document::parse(const StringView& str)
{
const Vector<StringView> lines_vec = str.lines();
auto lines = lines_vec.begin();
auto document = make<Document>();
auto& blocks = document->m_blocks;
StringBuilder paragraph_text;
auto flush_paragraph = [&] {
if (paragraph_text.is_empty())
return;
auto paragraph = make<Paragraph>(Text::parse(paragraph_text.build()));
document->m_blocks.append(move(paragraph));
paragraph_text.clear();
};
while (true) {
if (lines.is_end())
break;
if ((*lines).is_empty()) {
++lines;
flush_paragraph();
continue;
}
bool any = helper<Table>(lines, blocks) || helper<List>(lines, blocks) || helper<CodeBlock>(lines, blocks)
|| helper<Heading>(lines, blocks) || helper<HorizontalRule>(lines, blocks);
if (any) {
if (!paragraph_text.is_empty()) {
auto last_block = document->m_blocks.take_last();
flush_paragraph();
document->m_blocks.append(move(last_block));
}
continue;
}
if (!paragraph_text.is_empty())
paragraph_text.append("\n");
paragraph_text.append(*lines++);
}
flush_paragraph();
return document;
return make<Document>(ContainerBlock::parse(lines));
}
}