#include #include #include struct Attribute { /* Erased for simplicity */ }; class Tag { protected: std::string name; std::string text; std::vector children; std::vector attributes; /* Tag with name */ Tag(const std::string&); /* Tag with name and text */ Tag(const std::string&, const std::string&); /* Tag with name, attribute(s) and text */ Tag(const std::string&, const std::initializer_list, const std::string&); /* Tag with name and children tag(s) */ Tag(const std::string&, const std::initializer_list); /* Tag with name, attribute(s) and children tag(s) */ Tag(const std::string&, const std::initializer_list, const std::initializer_list); public: friend std::ostream& operator<<(std::ostream&, const Tag&); }; Tag::Tag(const std::string& name) :name(name) {} Tag::Tag(const std::string& name, const std::string& text) :name(name), text(text) {} Tag::Tag(const std::string& name, const std::initializer_list list, const std::string& text) :name(name), attributes(list.begin(), list.end()), text(text) {} Tag::Tag(const std::string& name, const std::initializer_list children) :name(name), children(children.begin(), children.end()) {} Tag::Tag(const std::string& name, const std::initializer_list list, const std::initializer_list children) :name(name), attributes(list.begin(), list.end()), children(children.begin(), children.end()) {} std::ostream& operator<<(std::ostream& out, const Tag& tag) { /* pretty printing */ return out; } struct html : public Tag { html(const std::initializer_list); }; html::html(const std::initializer_list list) :Tag("html", list) {} struct head : public Tag { head(const std::initializer_list); }; int main() { std::cout << html( { head({}) } ) << std::endl; return 0; }

[Q&A] Internal compiler error