ProgramImage.h

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#pragma once
#include "common/Setup.h"
 
#include <cstddef>
 
#include <memory>
#include <string>
#include <string_view>
#include <unordered_map>
#include <vector>
 
namespace mana
{
    class ProgramImage
    {
    public:
        ProgramImage() = default;
 
        // Initializes this instance from raw program bytes.
        // Returns true if successful; false if parsing/validation fails.
        // Store a diagnostic message on failure.
        bool LoadProgram(const std::shared_ptr<const void> programBytes, size_t programSizeBytes);
 
        bool IsLoaded() const noexcept;
        const std::string& GetLastError() const noexcept;
 
        // Actors
        std::vector<std::string_view> GetActorNames() const;
        bool HasActor(std::string_view actorFullName) const;
 
        std::vector<std::string_view> GetActorActionNames(std::string_view actorFullName) const;
        bool HasActorAction(std::string_view actorFullName, std::string_view actionName) const;
 
        // Phantoms
        bool HasPhantom(std::string_view phantomFullName) const;
        std::vector<std::string_view> GetPhantomActionNames(std::string_view phantomFullName) const;
        bool HasPhantomAction(std::string_view phantomFullName, std::string_view actionName) const;
 
    private:
        struct SymbolIndex
        {
            std::vector<std::string_view> mActionNames;
        };
 
        void Clear();
 
        // Internal parse entry point (split by concern).
        bool ParseAndBuildIndex(const std::byte* data, size_t size);
 
    private:
        std::shared_ptr<const void> mProgram;
        size_t mProgramSize = 0;
        std::string mLastError;
        bool mLoaded = false;
 
        std::unordered_map<std::string_view, SymbolIndex> mActors;
        std::unordered_map<std::string_view, SymbolIndex> mPhantoms;
        std::vector<std::string_view> mActorNames;
        std::vector<std::string_view> mPhantomNames;
    };
}
 
 
#include "ProgramImage.inl"