57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
#pragma once
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#include <sstream>
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#include <boost/variant/static_visitor.hpp>
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#include "render_context.hpp"
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#include "mstch/mstch.hpp"
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#include "utils.hpp"
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namespace mstch {
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class render_node: public boost::static_visitor<std::string> {
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public:
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enum class flag { none, escape_html };
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render_node(render_context& ctx, flag p_flag = flag::none):
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m_ctx(ctx), m_flag(p_flag)
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{
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}
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template<class T>
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std::string operator()(const T&) const {
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return "";
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}
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std::string operator()(const int& value) const {
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return std::to_string(value);
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}
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std::string operator()(const double& value) const {
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std::stringstream ss;
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ss << value;
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return ss.str();
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}
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std::string operator()(const bool& value) const {
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return value ? "true" : "false";
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}
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std::string operator()(const lambda& value) const {
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template_type interpreted{value([this](const mstch::node& n) {
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return visit(render_node(m_ctx), n);
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})};
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auto rendered = render_context::push(m_ctx).render(interpreted);
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return (m_flag == flag::escape_html) ? html_escape(rendered) : rendered;
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}
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std::string operator()(const std::string& value) const {
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return (m_flag == flag::escape_html) ? html_escape(value) : value;
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}
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private:
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render_context& m_ctx;
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flag m_flag;
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};
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}
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