Identifier.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "CeresEngine/DataTypes.hpp"
 
#include "CeresEngine/Foundation/String.hpp"
 
namespace CeresEngine::ShaderCompiler {
 
    class Identifier {
    private:
        bool mOriginalSet = false;
        String mOriginal;
 
        bool mRenamedSet = false;
        String mRenamed;
 
        Int32 mCounter = 0;
 
    public:
        Identifier() = default;
        Identifier(const Identifier&) = default;
 
        // Renames this identifier by the final of the specified identifier.
        Identifier& operator=(const Identifier& rhs);
 
        // Renames this identifier by the specified string.
        Identifier& operator=(const String& s);
 
        // Renames this identifier by appending the specified prefix to the front (if the identifier does not already have this prefix).
        Identifier& appendPrefix(const String& prefix);
 
        // Renames this identifier by removing the specified prefix.
        Identifier& removePrefix(const String& prefix);
 
        // Returns the final identifier (i.e. renamed identifier if set, otherwise original).
        [[nodiscard]] const String& getFinal() const;
 
        // Returns true if the final of this identifier is empty.
        [[nodiscard]] inline bool empty() const { return getFinal().empty(); }
 
        // Operator shortcut for 'getFinal()'.
        inline operator const String&() const { return getFinal(); }
 
        // Returns the original identifier.
        [[nodiscard]] inline const String& getOriginal() const { return mOriginal; }
 
        // Returns true if this identifier is renamed.
        [[nodiscard]] inline bool isRenamed() const { return !mRenamed.empty(); }
    };
 
    inline bool operator==(const Identifier& lhs, const Identifier& rhs) { return (String(lhs) == String(rhs)); }
    inline bool operator==(const String& lhs, const Identifier& rhs) { return (lhs == String(rhs)); }
    inline bool operator==(const Identifier& lhs, const String& rhs) { return (String(lhs) == rhs); }
 
    inline bool operator!=(const Identifier& lhs, const Identifier& rhs) { return (String(lhs) != String(rhs)); }
    inline bool operator!=(const String& lhs, const Identifier& rhs) { return (lhs != String(rhs)); }
    inline bool operator!=(const Identifier& lhs, const String& rhs) { return (String(lhs) != rhs); }
 
    inline bool operator<(const Identifier& lhs, const Identifier& rhs) { return (String(lhs) < String(rhs)); }
    inline bool operator<(const String& lhs, const Identifier& rhs) { return (lhs < String(rhs)); }
    inline bool operator<(const Identifier& lhs, const String& rhs) { return (String(lhs) < rhs); }
 
    inline String operator+(const Identifier& lhs, const Identifier& rhs) { return (String(lhs) + String(rhs)); }
    inline String operator+(const String& lhs, const Identifier& rhs) { return (lhs + String(rhs)); }
    inline String operator+(const Identifier& lhs, const String& rhs) { return (String(lhs) + rhs); }
    inline String operator+(const char lhs, const Identifier& rhs) { return (lhs + String(rhs)); }
    inline String operator+(const Identifier& lhs, const char rhs) { return (String(lhs) + rhs); }
 
} // namespace CeresEngine::ShaderCompiler