base_output.hpp

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#ifndef OGLPLUS_TEXGEN_BASE_OUTPUT_HPP
#define OGLPLUS_TEXGEN_BASE_OUTPUT_HPP
 
#include "interface.hpp"
#include "param_format.hpp"
#include <set>
 
namespace eagine::oglp::texgen {
 
class base_output : public output_intf {
private:
    node_intf& _parent;
    std::set<input_intf*> _inputs;
 
protected:
    std::ostream& input_defs(std::ostream&, compile_context&);
    std::ostream& opening_expr(std::ostream&, compile_context&);
    std::ostream& closing_expr(std::ostream&, compile_context&);
 
    bool already_defined(compile_context&);
 
public:
    base_output(node_intf& parent) noexcept
      : _parent(parent) {}
 
    node_intf& parent() noexcept {
        return _parent;
    }
 
    virtual string_view type_name() = 0;
 
    string_view name() noexcept override;
 
    render_param_bits required_params() override;
 
    std::ostream& definitions(std::ostream&, compile_context&) override;
 
    std::ostream& expression(std::ostream&, compile_context&) override;
 
    bool is_connected(input_intf&) override;
 
    bool connect(input_intf&) override;
 
    bool disconnect(input_intf&) override;
 
    void disconnect_all() override;
 
    virtual bool set_default_value(span_size_t, float) {
        return false;
    }
 
    void notify_connected() override;
 
    void prepare_parent() override;
 
    bool render_parent(const render_params&) override;
 
    std::intptr_t get_id() const noexcept;
 
    void append_id(std::ostream&, string_view);
    void append_id(std::ostream&);
};
 
namespace expr {
struct output_id {
    output_intf& output;
    compile_context& context;
};
std::ostream& operator<<(std::ostream& out, const output_id&);
} // namespace expr
} // namespace eagine::oglp::texgen
 
#if !OGLPLUS_LINK_LIBRARY || defined(OGLPLUS_IMPLEMENTING_LIBRARY)
#include <oglplus/texgen/base_output.inl>
#endif
 
#endif // OGLPLUS_TEXGEN_BASE_OUTPUT_HPP