input.md

@@ -20,3 +20,21 @@ this is too far`
 # ***This is both!***
 
 ###### This is neither
+
+- Hello world
+- This is a list
+
+
+* this is also a list
+* this is still a list
+
+
+1. This list is ordered
+2. This is **number two**
+
+- hello
+world
+
+- hello 
+
+world number two

lib/parser.cpp

@@ -72,11 +72,30 @@ std::unique_ptr<Node> Parser::ParseBlock() {
   // std::unique_ptr<Node> block = std::make_unique<TextNode>(ch);
   // Consume();
 
-  if (Peek() == '#') {
+  char c = Peek();
+  char c_next = Peek(1);
+
+  // 1. Parse heading
+  if (c == '#') {
     return ParseHeading();
   }
 
-  // this is the default case
+  // 2. Parser unordered list
+  if (c == '*' || c == '-' || c == '+') {
+    // Next character must be space or tab
+    if (c_next == ' ' || c_next == '\t') {
+      return ParseList(false);
+    }
+  }
+
+  // 3. Parse ordered list
+  // TODO: This only checks a single digit, should check for 'n' digits
+  if (std::isdigit(c) && c_next == '.') {
+    // TODO: Do we need to check for white space?
+    return ParseList(true);
+  }
+
+  // 4. Parser paragraph
   return ParseParagraph();
 }
 
@@ -120,6 +139,44 @@ std::unique_ptr<Node> Parser::ParseHeading() {
   return node;
 }
 
+std::unique_ptr<Node> Parser::ParseList(bool ordered) {
+  auto node = std::make_unique<ListNode>(ordered);
+
+  // Consume the required white space and list char ('* ' or '1.')
+  while (true) {
+
+    Consume(ordered ? 2 : 1);
+    ConsumeWhiteSpace();
+
+    // Parse until either '\n\n' (exit) or the next list element is found ('* '
+    // or '1.') If '\n\n', then create a node and exit
+    auto children = ParseInlineListContent();
+    for (auto &child : children) {
+      node->AddChild(std::move(child));
+    }
+
+    char c = Peek();
+    char c_next = Peek(1);
+
+    // 2. Parser unordered list
+    if (c == '*' || c == '-' || c == '+') {
+      if (c_next == ' ' || c_next == '\t') {
+        continue;
+      }
+    }
+
+    // 3. Parse ordered list
+    // TODO: This only checks a single digit, should check for 'n' digits
+    if (std::isdigit(c) && c_next == '.') {
+      continue;
+    }
+
+    break;
+  }
+
+  return node;
+};
+
 vector<std::unique_ptr<Node>> Parser::ParseInline() {
   vector<std::unique_ptr<Node>> nodes;
   string str;
@@ -217,6 +274,63 @@ vector<std::unique_ptr<Node>> Parser::ParseInlineHeading() {
   return nodes;
 }
 
+vector<std::unique_ptr<Node>> Parser::ParseInlineListContent() {
+  vector<std::unique_ptr<Node>> nodes;
+  string str;
+
+  while (!IsEOF()) {
+    char c = Peek();
+    char c_next = Peek(1);
+    // If this char and next char are both newlines: then we have an empty line,
+    // we should stop.
+    if (c == '\n' && Peek(1) == '\n')
+      break;
+
+    // Check if a list block has been found
+    if ((c == '*' || c == '-' || c == '+') && (c_next == ' ' || c_next == '\t'))
+      break;
+
+    if (std::isdigit(c) && c_next == '.')
+      break;
+
+    if (c == '*' && Peek(1) == '*' && Peek(2) == '*') {
+      PushTextNode(nodes, str);
+      auto node = ParseBoldItalic();
+      if (!node->IsEmpty())
+        nodes.push_back(std::move(node));
+      continue;
+    } else if (c == '*' && Peek(1) == '*') {
+      PushTextNode(nodes, str);
+      auto node = ParseBold();
+      if (!node->IsEmpty())
+        nodes.push_back(std::move(node));
+      continue;
+    } else if (c == '*') {
+      PushTextNode(nodes, str);
+      auto node = ParseItalic();
+      if (!node->IsEmpty())
+        nodes.push_back(std::move(node));
+      continue;
+    }
+
+    if (c == '`') {
+      PushTextNode(nodes, str);
+      auto node = ParseCode();
+      if (!node->IsEmpty())
+        nodes.push_back(std::move(node));
+      continue;
+    }
+
+    // If a newline, use a space instead
+    str += (c == '\n' ? ' ' : c);
+    Consume();
+  }
+
+  // Push the last node, if the string is not empty
+  PushTextNode(nodes, str);
+  return nodes;
+}
+
 std::unique_ptr<Node> Parser::ParseItalic() {
   string str;
   Consume(1);

lib/parser.h

@@ -121,10 +121,12 @@ private:
 
   std::unique_ptr<Node> ParseParagraph();
   std::unique_ptr<Node> ParseHeading();
+  std::unique_ptr<Node> ParseList(bool ordered);
   vector<std::unique_ptr<Node>> ParseInline();
 
-  // The only difference is the exit condition
+  // The only differences are the exit condition
   vector<std::unique_ptr<Node>> ParseInlineHeading();
+  vector<std::unique_ptr<Node>> ParseInlineListContent();
 
   void PushTextNode(vector<std::unique_ptr<Node>> &nodes, string &str);
 

lib/structureNode.cpp

@@ -55,11 +55,15 @@ string ParagraphNode::ToHtml() const {
   return ss.str();
 }
 
-// TODO: Implement
 string ListNode::ToHtml() const {
   std::stringstream ss;
-  ss << (this->ordered ? "<ol>NOT YET IMPLEMENTED</ol>"
-                       : "<ul>NOT YET IMPLEMENTED</ul>");
 
+  ss << (this->ordered ? "<ol>" : "<ul>") << "\n";
+
+  for (const auto &child : this->GetChilren()) {
+    ss << "<li>" << child->ToHtml() << "</li>" << "\n";
+  }
+
+  ss << (this->ordered ? "</ol>" : "</ul>") << "\n";
   return ss.str();
 }