SymbolFactory.h

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#pragma once
#include "../runner/common/Setup.h"
#include "StringPool.h"
#include "Symbol.h"
#include "TypeDescriptorFactory.h"
#include <functional>
#include <memory>
#include <stack>
#include <unordered_map>
#include <vector>
 
namespace mana
{
    class CodeBuffer;
    class CodeGenerator;
    class DataBuffer;
    class StringPool;
    class Symbol;
    class SyntaxNode;
    class TypeDescriptorFactory;
 
    /*
    シンボルを生成します
    */
    class SymbolFactory final : Noncopyable
    {
    public:
        // deprecated
        bool IsValid(std::shared_ptr<Symbol> symbolEntry);
 
 
        SymbolFactory(
            const std::shared_ptr<CodeBuffer>& codeBuffer,
            const std::shared_ptr<DataBuffer>& dataBuffer,
            const std::shared_ptr<StringPool>& stringPool,
            const std::shared_ptr<TypeDescriptorFactory>& typeDescriptorFactory
        );
        ~SymbolFactory() = default;
 
        // create symbol
        std::shared_ptr<Symbol> CreateConstInt(const std::string_view name, const int32_t value);
        std::shared_ptr<Symbol> CreateConstFloat(const std::string_view name, const float value);
        std::shared_ptr<Symbol> CreateConstString(const std::string_view name, const std::string_view text);
        std::shared_ptr<Symbol> CreateVariable(const std::string_view name, const std::shared_ptr<TypeDescriptor>& type, const bool staticVariable, const bool isBlockOpened, const bool isFunctionOpened);
        std::shared_ptr<Symbol> CreateLabel(const std::string_view name);
        std::shared_ptr<Symbol> CreateFunction(const std::string_view name, const bool isActorOrStructOpened);
        std::shared_ptr<Symbol> CreateType(const std::string_view name, const std::shared_ptr<TypeDescriptor>& type);
        void Destroy(const std::string_view name);
 
        bool Each(std::function<bool(const std::shared_ptr<Symbol>&)> function)
        {
            for (auto& symbol : mSymbolEntries)
            {
                if (!function(symbol))
                    return false;
            }
            return true;
        }
 
        bool Each(std::function<bool(const std::shared_ptr<const Symbol>&)> function) const
        {
            for (auto& symbol : mSymbolEntries)
            {
                if (!function(symbol))
                    return false;
            }
            return true;
        }
 
        // Find
        std::shared_ptr<Symbol> Lookup(const std::string_view name) const;
        //std::shared_ptr<Symbol> LookupOrCreateDummy(const std::string_view name);
 
        void Define(const std::string_view name, std::shared_ptr<Symbol> symbolEntry);
        void Define(std::shared_ptr<Symbol> symbolEntry);
        void Undefine(const std::string_view name);
        void Undefine(std::shared_ptr<Symbol> symbolEntry);
 
        // Block management
        void OpenBlock(const int32_t address);
        int32_t CloseBlock();
        size_t GetBlockDepth() const;
        void EachBlock(std::function<void(const std::shared_ptr<Symbol>&)> function);
 
 
        // TODO:相応しい名前か検討して下さい
        void ExtendModule(const std::shared_ptr<Symbol>& symbol);
 
        void RegisterToBlock(const std::shared_ptr<Symbol>& symbolEntry);
        void RegisterToBlock(const std::shared_ptr<TypeDescriptor>& typeDescriptor);
 
        std::shared_ptr<Symbol> GetLastSymbolEntryInBlock() const;
        std::shared_ptr<TypeDescriptor> GetLastTypeDescriptorInBlock() const;
 
 
 
        int32_t OpenBlock(const bool resetMaxFrameMemoryAddress);
        bool IsOpenBlock() const;
 
        // function
        void OpenFunction(const std::shared_ptr<SyntaxNode>& node, const bool is_action);
        void OpenFunction2(const std::shared_ptr<const Symbol>& function) const;
        void CloseFunction(const std::shared_ptr<SyntaxNode>& node, const bool is_action);
        bool IsFunctionOpened() const { return mIsFunctionOpened; }
 
        void BeginNativeFunction();
        void CloseNativeFunction(const std::shared_ptr<Symbol>& function, const std::shared_ptr<TypeDescriptor>& type);
 
        // struct
        void BeginRegistrationStructure();
        void CommitRegistrationStructure(const std::string_view name);
        void OpenStructure(const std::string_view name);
        void CloseStructure();
 
        // actor
        void BeginRegistrationActor(const std::shared_ptr<Symbol>& symbolEntry);
        void CommitRegistrationActor(const std::string_view name, const std::string_view parent, const std::shared_ptr<TypeDescriptor>& type, const bool phantom);
        bool IsActorOrStructerOpened() const;
 
        void OpenActor(const std::string_view name);
        void CloseActor();
        size_t GetNumberOfActors() const;
 
        // module
        void BeginRegistrationModule(const std::shared_ptr<Symbol>& symbolEntry);
        void CommitRegistrationModule(const std::string_view name);
 
        void OpenModule(const std::shared_ptr<Symbol>& symbolEntry);
        void CloseModule(const std::string_view name);
        bool IsModuleOpened() const { return mModuleBlockOpened; }
 
        void ExtendModule(const std::string_view name);
 
 
        // TODO 適切な関数名を検討して下さい
        std::shared_ptr<TypeDescriptor> GetCurrentBlockTypeDescriptor() const
        {
            return mBlockTypeDescriptor.top();
        }
 
 
        void AddRequest(const std::shared_ptr<CodeGenerator>& codeGenerator, const IntermediateLanguage opcode, const std::shared_ptr<SyntaxNode>& level, const std::shared_ptr<SyntaxNode>& actor, const std::string_view action) const;
        void AddJoin(const std::shared_ptr<CodeGenerator>& codeGenerator, const std::shared_ptr<SyntaxNode>& level, const std::shared_ptr<SyntaxNode>& actor) const;
 
        void AllocateMemory(const std::shared_ptr<Symbol>& symbolEntry, std::shared_ptr<TypeDescriptor> type, Symbol::MemoryTypeId);
 
 
        //const std::shared_ptr<Symbol>& symbol_get_head_symbol();
 
        int32_t GetStaticMemoryAddress() const;
        void SetStaticMemoryAddress(const int32_t size);
 
        int32_t GetGlobalMemoryAddress() const;
        void SetGlobalMemoryAddress(const int32_t size);
 
        void CheckUndefine();
 
        bool GenerateActorInformation(OutputStream& stream) const;
 
 
 
 
        void symbol_open_actor_register_member(const std::shared_ptr<Symbol>& symbol);
        void symbol_open_actor_register_member(const std::shared_ptr<TypeDescriptor>& typeDescriptor);
 
 
 
 
        address_t GetReturnAddressList() const
        {
            return mReturnAddressList;
        }
 
        void SetReturnAddressList(const address_t returnAddressList)
        {
            mReturnAddressList = returnAddressList;
        }
 
        // Dump
        void Dump(std::ofstream& output) const;
        void DumpFunctionNameFromAddress(std::ofstream& output, const int32_t address) const;
 
        // debug
        void PrintHeader();
        void PrintFooter(const std::string_view, const std::shared_ptr<TypeDescriptor>& type);
        void PrintEntry(const std::shared_ptr<Symbol>& symbolEntry, const std::shared_ptr<TypeDescriptor>& type);
        void PrintDummyGlobalVariable(size_t size);
 
    private:
        std::shared_ptr<Symbol> CreateSymbol(const std::string_view name, const Symbol::ClassTypeId class_type);
        std::shared_ptr<Symbol> CreateSymbolWithAddress(const std::string_view name, const Symbol::ClassTypeId class_type, const int32_t address);
        std::shared_ptr<Symbol> CreateSymbolWithLevel(const std::string_view name, Symbol::ClassTypeId class_type, const size_t blockLevel);
 
 
        bool GenerateActorEntity(OutputStream& stream, const std::shared_ptr<const Symbol>& symbol, const std::shared_ptr<const TypeDescriptor>& type) const;
 
        static int32_t symbol_align_size(const int32_t X, const int32_t Y)
        {
            return (X + Y - 1) / Y * Y;
        }
 
 
    private:
        std::shared_ptr<CodeBuffer> mCodeBuffer;
        std::shared_ptr<DataBuffer> mDataBuffer;
        std::shared_ptr<StringPool> mStringPool;
        std::shared_ptr<TypeDescriptorFactory> mTypeDescriptorFactory;
 
        std::unordered_map<std::string_view, std::shared_ptr<Symbol>> mHashChainTable;
        std::vector<std::shared_ptr<Symbol>> mSymbolEntries;
 
        struct BlockEntry final
        {
            BlockEntry() = default;
            void Set(const std::shared_ptr<Symbol>& symbolEntry)
            {
                mSymbolEntry = symbolEntry;
            }
            void Set(const std::shared_ptr<TypeDescriptor>& typeDescriptor)
            {
                mTypeDescriptor = typeDescriptor;
            }
 
            std::shared_ptr<Symbol> mSymbolEntry;
            std::shared_ptr<TypeDescriptor> mTypeDescriptor;
        };
 
        struct BlockTable final
        {
            BlockEntry mHead;
            int32_t mAllocp;
 
            explicit BlockTable(const int32_t allocp)
                : mAllocp(allocp)
            {}
        };
        std::stack<std::unique_ptr<BlockTable>> mBlockTable;
 
        std::stack<std::shared_ptr<TypeDescriptor>> mBlockTypeDescriptor;
 
 
        ssize_t mActorOrStructureLevel = 0;
        size_t mFunctionBlockLevel = 0;
        bool mIsFunctionOpened = false;
        bool mModuleBlockOpened = false;
 
 
        int32_t mStaticMemoryAddress = 0;
        int32_t mGlobalMemoryAddress = 0;
        int32_t mActorMemoryAddress = 0;
        int32_t mLocalMemoryAddress = 0;
        int32_t mMaxLocalMemoryAddress = 0;
 
        int32_t mFrameSizeList = 0;
        address_t mReturnAddressList = InvalidAddress;
    };
}