.. _program_listing_file_uri-template_Modifier.h:

Program Listing for File Modifier.h
===================================

|exhale_lsh| :ref:`Return to documentation for file <file_uri-template_Modifier.h>` (``uri-template/Modifier.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #pragma once
   
   #include <memory>
   #include <string>
   #include <vector>
   
   namespace URI {
   namespace Template {
   
   enum class ModifierType
   {
       NONE, 
       LENGTH, 
       EXPLODE 
   };
   
   class Modifier
   {
   public:
       virtual ~Modifier() = default;
   
       virtual ModifierType Type() const = 0;
       virtual char Start() const = 0;
   };
   
   class ModNoop: public Modifier
   {
   public:
       ModNoop() = default;
       virtual ~ModNoop() = default;
   
       virtual ModifierType Type() const override;
   
       virtual char Start() const override;
   };
   
   class ModLength: public Modifier
   {
   public:
       ModLength() = default;
       virtual ~ModLength() = default;
   
       virtual ModifierType Type() const override;
   
       virtual char Start() const override;
   
       static bool IsDigit(char c);
   
       static unsigned ToNumber(const std::string& num_str);
   };
   
   class ModExplode: public Modifier
   {
   public:
       ModExplode() = default;
       virtual ~ModExplode() = default;
   
       virtual ModifierType Type() const override;
   
       virtual char Start() const override;
   };
   
   inline const std::shared_ptr<Modifier> NOOP_MODIFIER = std::make_shared<ModNoop>();
   inline const std::vector<std::shared_ptr<Modifier>> KNOWN_MODIFIERS = {
       std::make_shared<ModLength>(),
       std::make_shared<ModExplode>(),
   };
   
   } // namespace Template
   } // namespace URI