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Copy pathexample_html_lib.cpp
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124 lines (94 loc) · 2.52 KB
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//#include "crow.h"
#include <string>
#include <vector>
#include <chrono>
#include <iostream>
using namespace std;
struct Element
{
virtual void render(std::string& target) const = 0;
virtual ~Element()=default;
};
struct Text : public Element
{
std::string text;
};
namespace html
{
struct CompositeElement : Element
{
std::vector<CompositeElement> children;
CompositeElement(): children()
{
}
CompositeElement(const std::initializer_list<CompositeElement>& children): children(children)
{}
~CompositeElement() = default;
virtual void on_render_start(std::string& target) const {}
virtual void on_render_end(std::string& target) const {}
void render(std::string& target) const override
{
this->on_render_start(target);
for (auto & child : children)
{
child.render(target);
}
this->on_render_end(target);
}
};
template<const char* NAME>
struct Tag : public CompositeElement
{ static constexpr const char* TAG = NAME;
Tag() = default;
Tag(const Tag& child) = default;
Tag(const std::initializer_list<CompositeElement>& children): CompositeElement(children) {
}
~Tag() = default;
void on_render_start(std::string& target) const override
{
target.append(1, '<').append(TAG).append(1, '>');
}
void on_render_end(std::string & target) const override
{
target.append("</").append(TAG).append(">");
}
};
constexpr const char html_tag[] = "HTML";
typedef Tag<html_tag> html;
constexpr const char body_tag[] = "body";
typedef Tag<body_tag> body;
constexpr const char p_tag[] = "p";
typedef Tag<p_tag> p;
}
using html::body;
using html::p;
int main()
{
std::string out;
body b;
b.render(out);
std::cout << out;
out = "";
body b2{html::p()};
b2.render(out);
std::cout << out;
out = "";
html::html page{
body{
html::p()}};
page.render(out);
std::cout << out;
//crow::SimpleApp app;
//crow::mustache::set_base(".");
//CROW_ROUTE(app, "/")
//([] {
// crow::response response;
// html::html page;
//
// page.render(response.body);
// return response;
// });
//app.port(40080)
// //.multithreaded()
// .run();
}