#include <vector>
#include "ff7_field_disassembler.h"
#include "ff7_field_engine.h"
#include "decompiler_engine.h"
#include <boost/format.hpp>
#include "lzs.h"
#include "make_unique.h"
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string.hpp>
#include "ff7_field_codegen.h"

FF7::FF7Disassembler::FF7Disassembler(SUDM::IScriptFormatter& formatter, FF7FieldEngine* engine, InstVec& insts, const std::vector<unsigned char>& rawScriptData)
    : SimpleDisassembler(insts),
    mEngine(engine),
    mFormatter(formatter)
{
    mbFromRaw = true;
    kSectionPointersSize = 0; // If loading a raw section then we don't have a "sections header" to skip
    auto dataCopy = rawScriptData;
    mStream = std::make_unique<BinaryReader>(std::move(dataCopy));
    ReadHeader();
}

FF7::FF7Disassembler::FF7Disassembler(SUDM::IScriptFormatter& formatter, FF7FieldEngine *engine, InstVec &insts)
    : SimpleDisassembler(insts),
    mEngine(engine),
    mFormatter(formatter)
{

}

FF7::FF7Disassembler::~FF7Disassembler()
{

}

void FF7::FF7Disassembler::ReadHeader()
{
    if (!mbFromRaw)
    {
        // First read the file section pointers
        for (int i = 0; i < kNumSections; i++)
        {
            mSections[i] = mStream->ReadU32();
        }

        // Now fix up from PSX RAM pointers to simple file offsets
        const uint32 basePtr = mSections[0];
        for (int i = 0; i < kNumSections; i++)
        {
            mSections[i] = (mSections[i] - basePtr) + kSectionPointersSize;
        }

        // Now seek to the script section
        mStream->Seek(mSections[eScript]);
    }

    // Read the script header
    mHeader.Read(*mStream);

    mScaleFactor = static_cast<float>(mHeader.mScale) / 512.0f;
}

void FF7::FF7Disassembler::open(const char *filename)
{
    // Read all of the file, decompress it, then stuff it into a stream
    mStream = std::make_unique<BinaryReader>(Lzs::Decompress(BinaryReader::ReadAll(filename)));
    ReadHeader();
}

uint32 FF7::FF7Disassembler::GetEndOfScriptOffset(uint16 curEntryPoint, size_t entityIndex, size_t scriptIndex)
{
    uint16 nextEntryPoint = curEntryPoint;
    do
    {
        if (scriptIndex + 1 >= 32)
        {
            if (entityIndex + 1 >= mHeader.mEntityScripts.size())
            {
                // This is the very last script, so use the end of its data which is the offset to strings
                return mHeader.mOffsetToStrings;
            }
            else
            {
                // Wrap around to the next entity
                entityIndex++;
                scriptIndex = 0;
            }
        }
        else
        {
            // Get the next script in the same entity
            scriptIndex++;
        }
        nextEntryPoint = mHeader.mEntityScripts[entityIndex][scriptIndex];
    } while (nextEntryPoint == curEntryPoint);
    return nextEntryPoint;
}

std::unique_ptr<Function> FF7::FF7Disassembler::StartFunction(size_t scriptIndex)
{
    auto func = std::make_unique<Function>();
    func->_retVal = false;
    func->_args = 0;
    func->_name = "script_" + std::to_string(scriptIndex);
    func->mStartAddr = _address;
    return func;
}

std::unique_ptr<Function> FF7::FF7Disassembler::StartLineFunction(size_t script_index){
    auto func = std::make_unique<Function>();
    func->_retVal = false;
    func->_args = 0;
    switch (script_index){
        case 0: func->_name = "on_enter_line"; break;
        case 1: func->_name = "on_move_to_line"; break;
        case 4: func->_name = "on_cross_line"; break;
        case 5: func->_name = "on_leave_line"; break;
        default: func->_name = "script_" + std::to_string(script_index);
    }
    func->mStartAddr = _address;
    return func;
}

struct ScriptInfo
{
    uint16 mEntryPoint;
    uint32 mNextEntryPoint;
    size_t mIndex;
};

void FF7::FF7Disassembler::doDisassemble()
{
    // Loop through the scripts for each entity
    for (size_t entityNumber = 0; entityNumber < mHeader.mEntityScripts.size(); entityNumber++)
    {
        std::string strOriginalName = mHeader.mFieldEntityNames[entityNumber].data();
        if (strOriginalName.empty())
        {
            // If the entity name was blank in the file then use a consistent generated name
            strOriginalName = "entity_" + std::to_string(entityNumber);
        }
        const std::string entityName = mFormatter.EntityName(strOriginalName);

        // Only parse each script one
        std::set<uint16> parsedScripts;
        std::vector<ScriptInfo> scriptInfo;

        // Collect the scripts to parse
        for (size_t scriptIndex = 0; scriptIndex < mHeader.mEntityScripts[entityNumber].size(); scriptIndex++)
        {
            uint16 scriptEntryPoint = mHeader.mEntityScripts[entityNumber][scriptIndex];
            if (parsedScripts.find(scriptEntryPoint) != std::end(parsedScripts))
            {
                // If we've already parsed this scripts entry point, then don't do it again as it means
                // two scripts have the same entry which only seems to be true for "empty" scripts
                continue;
            }
            parsedScripts.insert(scriptEntryPoint);

            const uint32 nextScriptEntryPoint = GetEndOfScriptOffset(scriptEntryPoint, entityNumber, scriptIndex);
            const uint32 scriptSize = nextScriptEntryPoint - scriptEntryPoint;
            if (scriptSize > 0)
            {
                ScriptInfo info = { scriptEntryPoint, nextScriptEntryPoint, scriptIndex };
                scriptInfo.push_back(info);
            }
        }

        for (auto it = scriptInfo.begin(); it != scriptInfo.end(); it++)
        {
            const bool isStart = it == scriptInfo.begin();
            const bool isEnd = it == (--scriptInfo.end());
            DisassembleIndivdualScript(entityName, entityNumber, it->mIndex, it->mEntryPoint, it->mNextEntryPoint, isStart, isEnd);
        }
    }
}

static int FindId(uint32 startAddr, uint32 endAddr, const InstVec& insts)
{
    for (const InstPtr& instruction : insts)
    {
        if (instruction->_address >= startAddr && instruction->_address <= endAddr)
        {
            if (instruction->_opcode == FF7::eOpcodes::opCodeCHAR)
            {
                return instruction->_params[0]->getSigned();
            }
        }
    }
    return -1;
}

void FF7::FF7Disassembler::AddFunc(
  std::string entity_name, size_t entity_index, size_t script_index, uint32 next_script_entry_point,
  const bool is_start, bool is_end, bool to_return_only, std::string func_name
){

    bool is_line = false;
    std::vector<float> point_a = {0, 0, 0};
    std::vector<float> point_b = {0, 0, 0};
    const auto SCRIPT_ENTRY_POINT = mStream->Position();

    // Read each block of opcodes up to a return.
    const size_t old_num_instructions = _insts.size();
    std::unique_ptr<Function> func;

    // Initialize the function.
    if (mEngine->EntityIsLine(entity_index)) func = StartLineFunction(script_index);
    else func = StartFunction(script_index);

    // Read.
    if (to_return_only){
        // Read opcodes to the end or bail at the first return.
        is_line = ReadOpCodesToPositionOrReturn(
          next_script_entry_point + kSectionPointersSize, point_a, point_b
        );
        auto stream_pos = mStream->Position();
        const size_t endPos = next_script_entry_point + kSectionPointersSize;
        // Can't be the end if there is more data:
        if (stream_pos != endPos) is_end = false;
    }
    else{
        // Keep going till we have all of the script, i.e if we bail at a
        // return then call again till we have everything
        while (mStream->Position() != next_script_entry_point + kSectionPointersSize){
            is_line = ReadOpCodesToPositionOrReturn(
              next_script_entry_point + kSectionPointersSize, point_a, point_b
            );
        }
    }

    // Read metadata, mark start and/or end.
    std::string meta_data;
    if (is_start && is_end) meta_data = "start_end_";
    else if (is_start) meta_data = "start_";
    else if (is_end) meta_data = "end_";

    const size_t new_num_instructions = _insts.size();
    func->mNumInstructions = new_num_instructions - old_num_instructions;
    func->mEndAddr = _insts.back()->_address;

    if (!func_name.empty()) func->_name = func_name;

    // TODO: Remove and test. Should be applied in StartLineFunction
    // TODO: I dont know which one is OK. Check.
    if (mEngine->EntityIsLine(entity_index)){
        switch (script_index){
            case 1:
            case 2:
                func->_name = "on_enter_line"; break;
            case 3: func->_name = "on_move_to_line"; break;
            case 4: func->_name = "on_cross_line"; break;
            case 5: func->_name = "on_leave_line"; break;
        }
    }

    int id = FindId(func->mStartAddr, func->mEndAddr, _insts);

    // If there is no ID check if there was an ID for this entity in any of
    // its other functions and use that instead.
    if (id == -1){
        for (auto& func : mEngine->_functions){
            FunctionMetaData func_meta_data(func.second._metadata);
            if (func_meta_data.EntityName() == entity_name && func_meta_data.CharacterId() != -1){
                id = func_meta_data.CharacterId();
                break;
            }
        }
    }

    meta_data += std::to_string(id) + "_" + entity_name;
    func->_metadata = meta_data;

    mEngine->_functions[SCRIPT_ENTRY_POINT] = *func;
    mEngine->AddEntityFunction(entity_name, entity_index, func->_name, script_index);

    // If the entity is a line, mark it as so.
    if (is_line) mEngine->MarkEntityAsLine(entity_index, true, point_a, point_b);


}

void FF7::FF7Disassembler::DisassembleIndivdualScript(std::string entityName,
    size_t entityIndex,
    size_t scriptIndex,
    size_t scriptEntryPoint,
    uint32 nextScriptEntryPoint,
    bool isStart,
    bool isEnd)
{

    scriptEntryPoint += kSectionPointersSize;

    mStream->Seek(scriptEntryPoint);

    _addressBase = mStream->Position();
    _address = _addressBase;

    // "Normal" script
    if (scriptIndex > 0)
    {
        if (scriptIndex == 1)
        {
            AddFunc(entityName, entityIndex, scriptIndex, nextScriptEntryPoint, isStart, isEnd, false, "on_interact");
        }
        else
        {
            AddFunc(entityName, entityIndex, scriptIndex, nextScriptEntryPoint, isStart, isEnd, false, "");
        }
    }
    else
    {
        const size_t endPos = nextScriptEntryPoint + kSectionPointersSize;

        // Read the init script, which means stop at the first return
        AddFunc(entityName, entityIndex, scriptIndex, nextScriptEntryPoint, isStart, isEnd, true, "on_start");

        // Not at the end of this script? Then the remaining data is the "main" script
        auto streamPos = mStream->Position();
        if (streamPos != endPos)
        {
            // The "main" script can have more than one return statement
            AddFunc(entityName, entityIndex, scriptIndex, nextScriptEntryPoint, false, isEnd, false, "on_update");
            streamPos = mStream->Position();

            // But should end exactly on the end pos
            if (streamPos != endPos)
            {
                throw InternalDecompilerError();
            }
        }

    }
}


const FF7::TInstructRecord kOpcodes[] =
{
    // Flow
    { 1, FF7::eOpcodes::RET, "RET", "", FF7::FF7ControlFlowInstruction::Create },
    { 1, FF7::eOpcodes::REQ, "REQ", "BU", FF7::FF7ControlFlowInstruction::Create },
    { 1, FF7::eOpcodes::REQSW, "REQSW", "BU", FF7::FF7ControlFlowInstruction::Create },
    { 1, FF7::eOpcodes::REQEW, "REQEW", "BU", FF7::FF7ControlFlowInstruction::Create },
    { 1, FF7::eOpcodes::NOP, "NOP", "", FF7::FF7NoOperationInstruction::Create },
    { 1, FF7::eOpcodes::IFUB, "IFUB", "NNBBBL", FF7::FF7NoOperationInstruction::Create }
};

std::map<std::string, const FF7::TInstructRecord*> FF7::FieldInstructions()
{
    // Convert the array to a map that we can query on by mnemonic
    std::map<std::string, const TInstructRecord*> mnemonicToInstructionRecords;
    for (size_t i = 0; i < boost::size(kOpcodes); i++)
    {
        mnemonicToInstructionRecords[kOpcodes[i].mMnemonic] = &kOpcodes[i];
    }
    return mnemonicToInstructionRecords;
}

bool FF7::FF7Disassembler::ReadOpCodesToPositionOrReturn(
  size_t end_pos, std::vector<float>& point_a, std::vector<float>& point_b
){

    bool is_line = false;
    std::vector<unsigned int> exitAddrs;
    while (mStream->Position() < end_pos){
        uint8 opcode = mStream->ReadU8();
        uint32 full_opcode = 0;
        std::string opcodePrefix;
        switch (opcode){
            // Flow
            OPCODE(eOpcodes::IFUB, "IFUB", FF7CondJumpInstruction, 0, "NBBBB");
            OPCODE(eOpcodes::RET, "RET", FF7ControlFlowInstruction, 0, "");
            OPCODE(eOpcodes::REQ, "REQ", FF7ControlFlowInstruction, 0, "BU");
            OPCODE(eOpcodes::REQSW, "REQSW", FF7ControlFlowInstruction, 0, "BU");
            OPCODE(eOpcodes::REQEW, "REQEW", FF7ControlFlowInstruction, 0, "BU");
            OPCODE(eOpcodes::PREQ, "PREQ", FF7ControlFlowInstruction, 0, "BU");
            OPCODE(eOpcodes::PRQSW, "PRQSW", FF7ControlFlowInstruction, 0, "BU");
            OPCODE(eOpcodes::PRQEW, "PRQEW", FF7ControlFlowInstruction, 0, "BU");
            OPCODE(eOpcodes::RETTO, "RETTO", FF7ControlFlowInstruction, 0, "U");
            OPCODE(eOpcodes::JMPF, "JMPF", FF7UncondJumpInstruction, 0, "B");
            OPCODE(eOpcodes::JMPFL, "JMPFL", FF7UncondJumpInstruction, 0, "w");
            OPCODE(eOpcodes::JMPB, "JMPB", FF7UncondJumpInstruction, 0, "B");
            OPCODE(eOpcodes::JMPBL, "JMPBL", FF7UncondJumpInstruction, 0, "w");
            OPCODE(eOpcodes::IFUBL, "IFUBL", FF7CondJumpInstruction, 0, "NBBBw");
            OPCODE(eOpcodes::IFSW, "IFSW", FF7CondJumpInstruction, 0, "NwwBB");
            OPCODE(eOpcodes::IFSWL, "IFSWL", FF7CondJumpInstruction, 0, "NwwBw");
            OPCODE(eOpcodes::IFUW, "IFUW", FF7CondJumpInstruction, 0, "NwwBB");
            OPCODE(eOpcodes::IFUWL, "IFUWL", FF7CondJumpInstruction, 0, "NwwBw");
            OPCODE(eOpcodes::WAIT, "WAIT", FF7ControlFlowInstruction, 0, "w");
            OPCODE(eOpcodes::IFKEY, "IFKEY", FF7CondJumpInstruction, 0, "wB");
            OPCODE(eOpcodes::IFKEYON, "IFKEYON", FF7CondJumpInstruction, 0, "wB");
            OPCODE(eOpcodes::IFKEYOFF, "IFKEYOFF", FF7CondJumpInstruction, 0, "wB");
            OPCODE(eOpcodes::NOP, "NOP", FF7NoOperationInstruction, 0, "");
            OPCODE(eOpcodes::IFPRTYQ, "IFPRTYQ", FF7CondJumpInstruction, 0, "BB");
            OPCODE(eOpcodes::IFMEMBQ, "IFMEMBQ", FF7CondJumpInstruction, 0, "BB");

            // Module
            OPCODE(eOpcodes::DSKCG, "DSKCG", FF7ModuleInstruction, 0, "B");
            START_SUBOPCODE(eOpcodes::SPECIAL)
                OPCODE(eSpecialOpcodes::ARROW, "ARROW", FF7ModuleInstruction, 0, "B");
            OPCODE(eSpecialOpcodes::PNAME, "PNAME", FF7ModuleInstruction, 0, "B");
            OPCODE(eSpecialOpcodes::GMSPD, "GMSPD", FF7ModuleInstruction, 0, "B");
            OPCODE(eSpecialOpcodes::SMSPD, "SMSPD", FF7ModuleInstruction, 0, "BB");
            OPCODE(eSpecialOpcodes::FLMAT, "FLMAT", FF7ModuleInstruction, 0, "");
            OPCODE(eSpecialOpcodes::FLITM, "FLITM", FF7ModuleInstruction, 0, "");
            OPCODE(eSpecialOpcodes::BTLCK, "BTLCK", FF7ModuleInstruction, 0, "B");
            OPCODE(eSpecialOpcodes::MVLCK, "MVLCK", FF7ModuleInstruction, 0, "B");
            OPCODE(eSpecialOpcodes::SPCNM, "SPCNM", FF7ModuleInstruction, 0, "BB");
            OPCODE(eSpecialOpcodes::RSGLB, "RSGLB", FF7ModuleInstruction, 0, "");
            OPCODE(eSpecialOpcodes::CLITM, "CLITM", FF7ModuleInstruction, 0, "");
            END_SUBOPCODE
                OPCODE(eOpcodes::MINIGAME, "MINIGAME", FF7ModuleInstruction, 0, "wsswBB");
            OPCODE(eOpcodes::BTMD2, "BTMD2", FF7ModuleInstruction, 0, "d");
            OPCODE(eOpcodes::BTRLD, "BTRLD", FF7ModuleInstruction, 0, "NB");
            OPCODE(eOpcodes::BTLTB, "BTLTB", FF7ModuleInstruction, 0, "B");
            OPCODE(eOpcodes::MAPJUMP, "MAPJUMP", FF7ModuleInstruction, 0, "wsswB");
            OPCODE(eOpcodes::LSTMP, "LSTMP", FF7ModuleInstruction, 0, "NB");
            OPCODE(eOpcodes::BATTLE, "BATTLE", FF7ModuleInstruction, 0, "Nw");
            OPCODE(eOpcodes::BTLON, "BTLON", FF7ModuleInstruction, 0, "B");
            OPCODE(eOpcodes::BTLMD, "BTLMD", FF7ModuleInstruction, 0, "w");
            OPCODE(eOpcodes::MPJPO, "MPJPO", FF7ModuleInstruction, 0, "B");
            OPCODE(eOpcodes::PMJMP, "PMJMP", FF7ModuleInstruction, 0, "w");
            OPCODE(eOpcodes::PMJMP2, "PMJMP2", FF7ModuleInstruction, 0, "");
            OPCODE(eOpcodes::GAMEOVER, "GAMEOVER", FF7ModuleInstruction, 0, "");

            // Math
            OPCODE(eOpcodes::PLUS_, "PLUS!", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::PLUS2_, "PLUS2!", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::MINUS_, "MINUS!", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::MINUS2_, "MINUS2!", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::INC_, "INC!", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::INC2_, "INC2!", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::DEC_, "DEC!", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::DEC2_, "DEC2!", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::RDMSD, "RDMSD", FF7MathInstruction, 0, "NB");
            OPCODE(eOpcodes::SETBYTE, "SETBYTE", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::SETWORD, "SETWORD", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::BITON, "BITON", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::BITOFF, "BITOFF", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::BITXOR, "BITXOR", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::PLUS, "PLUS", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::PLUS2, "PLUS2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::MINUS, "MINUS", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::MINUS2, "MINUS2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::MUL, "MUL", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::MUL2, "MUL2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::DIV, "DIV", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::DIV2, "DIV2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::MOD, "MOD", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::MOD2, "MOD2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::AND, "AND", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::AND2, "AND2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::OR, "OR", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::OR2, "OR2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::XOR, "XOR", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::XOR2, "XOR2", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::INC, "INC", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::INC2, "INC2", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::DEC, "DEC", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::DEC2, "DEC2", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::RANDOM, "RANDOM", FF7MathInstruction, 0, "BB");
            OPCODE(eOpcodes::LBYTE, "LBYTE", FF7MathInstruction, 0, "NBB");
            OPCODE(eOpcodes::HBYTE, "HBYTE", FF7MathInstruction, 0, "NBw");
            OPCODE(eOpcodes::TWOBYTE, "2BYTE", FF7MathInstruction, 0, "NNBBB");
            OPCODE(eOpcodes::SIN, "SIN", FF7MathInstruction, 0, "NNwwwB");
            OPCODE(eOpcodes::COS, "COS", FF7MathInstruction, 0, "NNwwwB");

            // Window
            OPCODE(eOpcodes::TUTOR, "TUTOR", FF7WindowInstruction, 0, "B");
            OPCODE(eOpcodes::WCLS, "WCLS", FF7WindowInstruction, 0, "B");
            OPCODE(eOpcodes::WSIZW, "WSIZW", FF7WindowInstruction, 0, "Bwwww");
            OPCODE(eOpcodes::WSPCL, "WSPCL", FF7WindowInstruction, 0, "BBBB");
            OPCODE(eOpcodes::WNUMB, "WNUMB", FF7WindowInstruction, 0, "NBwwB"); // NBdB when N == 0
            OPCODE(eOpcodes::STTIM, "STTIM", FF7WindowInstruction, 0, "NNBBB");
            OPCODE(eOpcodes::MESSAGE, "MESSAGE", FF7WindowInstruction, 0, "BB");
            OPCODE(eOpcodes::MPARA, "MPARA", FF7WindowInstruction, 0, "NBBB");
            OPCODE(eOpcodes::MPRA2, "MPRA2", FF7WindowInstruction, 0, "NBBw");
            OPCODE(eOpcodes::MPNAM, "MPNAM", FF7WindowInstruction, 0, "B");
            OPCODE(eOpcodes::ASK, "ASK", FF7WindowInstruction, 0, "NBBBBB");
            OPCODE(eOpcodes::MENU, "MENU", FF7WindowInstruction, 0, "NBB");
            OPCODE(eOpcodes::MENU2, "MENU2", FF7WindowInstruction, 0, "B");
            OPCODE(eOpcodes::WINDOW, "WINDOW", FF7WindowInstruction, 0, "Bwwww");
            OPCODE(eOpcodes::WMOVE, "WMOVE", FF7WindowInstruction, 0, "Bss");
            OPCODE(eOpcodes::WMODE, "WMODE", FF7WindowInstruction, 0, "BBB");
            OPCODE(eOpcodes::WREST, "WREST", FF7WindowInstruction, 0, "B");
            OPCODE(eOpcodes::WCLSE, "WCLSE", FF7WindowInstruction, 0, "B");
            OPCODE(eOpcodes::WROW, "WROW", FF7WindowInstruction, 0, "BB");
            OPCODE(eOpcodes::GWCOL, "GWCOL", FF7WindowInstruction, 0, "NNBBBB");
            OPCODE(eOpcodes::SWCOL, "SWCOL", FF7WindowInstruction, 0, "NNBBBB");

            // Party
            OPCODE(eOpcodes::SPTYE, "SPTYE", FF7PartyInstruction, 0, "NNBBB");
            OPCODE(eOpcodes::GTPYE, "GTPYE", FF7PartyInstruction, 0, "NNBBB");
            OPCODE(eOpcodes::GOLDU, "GOLDU", FF7PartyInstruction, 0, "Nww"); // Nd when N == 0
            OPCODE(eOpcodes::GOLDD, "GOLDD", FF7PartyInstruction, 0, "Nww"); // Nd when N == 0
            OPCODE(eOpcodes::CHGLD, "CHGLD", FF7PartyInstruction, 0, "NBB");
            OPCODE(eOpcodes::HMPMAX1, "HMPMAX1", FF7PartyInstruction, 0, "");
            OPCODE(eOpcodes::HMPMAX2, "HMPMAX2", FF7PartyInstruction, 0, "");
            OPCODE(eOpcodes::MHMMX, "MHMMX", FF7PartyInstruction, 0, "");
            OPCODE(eOpcodes::HMPMAX3, "HMPMAX3", FF7PartyInstruction, 0, "");
            OPCODE(eOpcodes::MPU, "MPU", FF7PartyInstruction, 0, "NBw");
            OPCODE(eOpcodes::MPD, "MPD", FF7PartyInstruction, 0, "NBw");
            OPCODE(eOpcodes::HPU, "HPU", FF7PartyInstruction, 0, "NBw");
            OPCODE(eOpcodes::HPD, "HPD", FF7PartyInstruction, 0, "NBw");
            OPCODE(eOpcodes::STITM, "STITM", FF7PartyInstruction, 0, "NwB");
            OPCODE(eOpcodes::DLITM, "DLITM", FF7PartyInstruction, 0, "NwB");
            OPCODE(eOpcodes::CKITM, "CKITM", FF7PartyInstruction, 0, "NwB");
            OPCODE(eOpcodes::SMTRA, "SMTRA", FF7PartyInstruction, 0, "NNBBBB");
            OPCODE(eOpcodes::DMTRA, "DMTRA", FF7PartyInstruction, 0, "NNBBBBB");
            OPCODE(eOpcodes::CMTRA, "CMTRA", FF7PartyInstruction, 0, "NNNBBBBBB");
            OPCODE(eOpcodes::GETPC, "GETPC", FF7PartyInstruction, 0, "NBB");
            OPCODE(eOpcodes::PRTYP, "PRTYP", FF7PartyInstruction, 0, "B");
            OPCODE(eOpcodes::PRTYM, "PRTYM", FF7PartyInstruction, 0, "B");
            OPCODE(eOpcodes::PRTYE, "PRTYE", FF7PartyInstruction, 0, "BBB");
            OPCODE(eOpcodes::MMBUD, "MMBUD", FF7PartyInstruction, 0, "BB");
            OPCODE(eOpcodes::MMBLK, "MMBLK", FF7PartyInstruction, 0, "B");
            OPCODE(eOpcodes::MMBUK, "MMBUK", FF7PartyInstruction, 0, "B");

            // Model
            OPCODE(eOpcodes::JOIN, "JOIN", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::SPLIT, "SPLIT", FF7ModelInstruction, 0, "NNNssBssBB");
            OPCODE(eOpcodes::BLINK, "BLINK", FF7ModelInstruction, 0, "B");
            OPCODE_BASE(eOpcodes::KAWAI)
            {
                int length = this->mStream->ReadU8();
                assert(length >= 3);
                std::ostringstream paramStream;
                for (int i = 3; i < length; ++i)
                {
                    paramStream << "B";
                }
                auto parameters = paramStream.str();

                opcode = this->mStream->ReadU8();
                switch (opcode)
                {
                    OPCODE(
                      eKawaiOpcodes::EYETX, "EYETX", FF7ModelInstruction, 0, parameters.c_str()
                    ); // was BBBB
                    OPCODE(
                      eKawaiOpcodes::TRNSP, "TRNSP", FF7ModelInstruction, 0, parameters.c_str()
                    ); // was B
                    OPCODE(
                      eKawaiOpcodes::AMBNT, "AMBNT", FF7ModelInstruction, 0, parameters.c_str()
                    ); // was BBBBBBB
                    OPCODE(
                      eKawaiOpcodes::Unknown03, "Unknown03",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown04, "Unknown04",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown05, "Unknown05",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::LIGHT, "LIGHT",FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown07, "Unknown07",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown08, "Unknown08",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown09, "Unknown09",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::SBOBJ, "SBOBJ",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown0B, "Unknown0B",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::Unknown0C, "Unknown0C",
                      FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::SHINE, "SHINE", FF7ModelInstruction, 0, parameters.c_str()
                    );
                    OPCODE(
                      eKawaiOpcodes::RESET, "RESET", FF7ModelInstruction, 0, parameters.c_str()
                    );
                default:
                    throw UnknownSubOpcodeException(this->_address, opcode);
                }
                INC_ADDR;
                INC_ADDR;
            }
            OPCODE_END
                OPCODE(eOpcodes::KAWIW, "KAWIW", FF7ModelInstruction, 0, "");
            OPCODE(eOpcodes::PMOVA, "PMOVA", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::PDIRA, "PDIRA", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::PTURA, "PTURA", FF7ModelInstruction, 0, "BBB");
            OPCODE(eOpcodes::PGTDR, "PGTDR", FF7ModelInstruction, 0, "NBB");
            OPCODE(eOpcodes::PXYZI, "PXYZI", FF7ModelInstruction, 0, "NNBBBBB");
            OPCODE(eOpcodes::TLKON, "TLKON", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::PC, "PC", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::opCodeCHAR, "CHAR", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::DFANM, "DFANM", FF7ModelInstruction, 0, "BB");
            OPCODE(eOpcodes::ANIME1, "ANIME1", FF7ModelInstruction, 0, "BB");
            OPCODE(eOpcodes::VISI, "VISI", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::XYZI, "XYZI", FF7ModelInstruction, 0, "NNsssw");
            OPCODE(eOpcodes::XYI, "XYI", FF7ModelInstruction, 0, "NNssw");
            OPCODE(eOpcodes::XYZ, "XYZ", FF7ModelInstruction, 0, "NNsss");
            OPCODE(eOpcodes::MOVE, "MOVE", FF7ModelInstruction, 0, "Nss");
            OPCODE(eOpcodes::CMOVE, "CMOVE", FF7ModelInstruction, 0, "Nss");
            OPCODE(eOpcodes::MOVA, "MOVA", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::TURA, "TURA", FF7ModelInstruction, 0, "BBB");
            OPCODE(eOpcodes::ANIMW, "ANIMW", FF7ModelInstruction, 0, "");
            OPCODE(eOpcodes::FMOVE, "FMOVE", FF7ModelInstruction, 0, "Nss");
            OPCODE(eOpcodes::ANIME2, "ANIME2", FF7ModelInstruction, 0, "BB");
            OPCODE(eOpcodes::ANIM_1, "ANIM!1", FF7ModelInstruction, 0, "BB");
            OPCODE(eOpcodes::CANIM1, "CANIM1", FF7ModelInstruction, 0, "BBBB");
            OPCODE(eOpcodes::CANM_1, "CANM!1", FF7ModelInstruction, 0, "BBBB");
            OPCODE(eOpcodes::MSPED, "MSPED", FF7ModelInstruction, 0, "Nw");
            OPCODE(eOpcodes::DIR, "DIR", FF7ModelInstruction, 0, "BB");
            OPCODE(eOpcodes::TURNGEN, "TURNGEN", FF7ModelInstruction, 0, "NBBBB");
            OPCODE(eOpcodes::TURN, "TURN", FF7ModelInstruction, 0, "NBBBB");
            OPCODE(eOpcodes::DIRA, "DIRA", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::GETDIR, "GETDIR", FF7ModelInstruction, 0, "NBB");
            OPCODE(eOpcodes::GETAXY, "GETAXY", FF7ModelInstruction, 0, "NBBB");
            OPCODE(eOpcodes::GETAI, "GETAI", FF7ModelInstruction, 0, "NBB");
            OPCODE(eOpcodes::ANIM_2, "ANIM!2", FF7ModelInstruction, 0, "BB");
            OPCODE(eOpcodes::CANIM2, "CANIM2", FF7ModelInstruction, 0, "BBBB");
            OPCODE(eOpcodes::CANM_2, "CANM!2", FF7ModelInstruction, 0, "BBBB");
            OPCODE(eOpcodes::ASPED, "ASPED", FF7ModelInstruction, 0, "Nw");
            OPCODE(eOpcodes::CC, "CC", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::JUMP, "JUMP", FF7ModelInstruction, 0, "NNssww");
            OPCODE(eOpcodes::AXYZI, "AXYZI", FF7ModelInstruction, 0, "NNBBBBB");
            OPCODE(eOpcodes::LADER, "LADER", FF7ModelInstruction, 0, "NNssswBBBB");
            OPCODE(eOpcodes::OFST, "OFST", FF7ModelInstruction, 0, "NNBsssw");
            OPCODE(eOpcodes::OFSTW, "OFSTW", FF7ModelInstruction, 0, "");
            OPCODE(eOpcodes::TALKR, "TALKR", FF7ModelInstruction, 0, "NB");
            OPCODE(eOpcodes::SLIDR, "SLIDR", FF7ModelInstruction, 0, "NB");
            OPCODE(eOpcodes::SOLID, "SOLID", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::TLKR2, "TLKR2", FF7ModelInstruction, 0, "Nw");
            OPCODE(eOpcodes::SLDR2, "SLDR2", FF7ModelInstruction, 0, "Nw");
            OPCODE(eOpcodes::CCANM, "CCANM", FF7ModelInstruction, 0, "BBB");
            OPCODE(eOpcodes::FCFIX, "FCFIX", FF7ModelInstruction, 0, "B");
            OPCODE(eOpcodes::ANIMB, "ANIMB", FF7ModelInstruction, 0, "");
            OPCODE(eOpcodes::TURNW, "TURNW", FF7ModelInstruction, 0, "");

            // Walkmesh
            OPCODE(eOpcodes::SLIP, "SLIP", FF7WalkmeshInstruction, 0, "B");
            OPCODE(eOpcodes::UC, "UC", FF7WalkmeshInstruction, 0, "B");
            OPCODE(eOpcodes::IDLCK, "IDLCK", FF7WalkmeshInstruction, 0, "wB");
            OPCODE(eOpcodes::LINON, "LINON", FF7WalkmeshInstruction, 0, "B");
            OPCODE(eOpcodes::SLINE, "SLINE", FF7WalkmeshInstruction, 0, "NNNssssss");
            //OPCODE(eOpcodes::LINE, "LINE", FF7WalkmeshInstruction, 0, "ssssss");
            // LINE is done like this to save opcode params to the function out params.
            case eOpcodes::LINE:
                is_line = true;
                full_opcode = (full_opcode << 8) + eOpcodes::LINE;
                this->_insts.push_back(new FF7WalkmeshInstruction());
                (this->_insts.back())->_opcode = full_opcode;
                (this->_insts.back())->_address = this->_address;
                (this->_insts.back())->_stackChange = 0;
                (this->_insts.back())->_name = opcodePrefix + std::string("LINE");
                (this->_insts.back())->_codeGenData = "";
                this->readParams((this->_insts.back()), "ssssss");
                point_a[0] = this->_insts.back()->_params[0]->getSigned();
                point_a[1] = this->_insts.back()->_params[1]->getSigned();
                point_a[2] = this->_insts.back()->_params[2]->getSigned();
                point_b[0] = this->_insts.back()->_params[3]->getSigned();
                point_b[1] = this->_insts.back()->_params[4]->getSigned();
                point_b[2] = this->_insts.back()->_params[5]->getSigned();
                break;

            // Backgnd
            OPCODE(eOpcodes::BGPDH, "BGPDH", FF7BackgroundInstruction, 0, "NBs");
            OPCODE(eOpcodes::BGSCR, "BGSCR", FF7BackgroundInstruction, 0, "NBss");
            OPCODE(eOpcodes::MPPAL, "MPPAL", FF7BackgroundInstruction, 0, "NNNBBBBBBB");
            OPCODE(eOpcodes::BGON, "BGON", FF7BackgroundInstruction, 0, "NBB");
            OPCODE(eOpcodes::BGOFF, "BGOFF", FF7BackgroundInstruction, 0, "NBB");
            OPCODE(eOpcodes::BGROL, "BGROL", FF7BackgroundInstruction, 0, "NB");
            OPCODE(eOpcodes::BGROL2, "BGROL2", FF7BackgroundInstruction, 0, "NB");
            OPCODE(eOpcodes::BGCLR, "BGCLR", FF7BackgroundInstruction, 0, "NB");
            OPCODE(eOpcodes::STPAL, "STPAL", FF7BackgroundInstruction, 0, "NBBB");
            OPCODE(eOpcodes::LDPAL, "LDPAL", FF7BackgroundInstruction, 0, "NBBB");
            OPCODE(eOpcodes::CPPAL, "CPPAL", FF7BackgroundInstruction, 0, "NBBB");
            OPCODE(eOpcodes::RTPAL, "RTPAL", FF7BackgroundInstruction, 0, "NNBBBB");
            OPCODE(eOpcodes::ADPAL, "ADPAL", FF7BackgroundInstruction, 0, "NNNBBBBBB");
            OPCODE(eOpcodes::MPPAL2, "MPPAL2", FF7BackgroundInstruction, 0, "NNNBBBBBB");
            OPCODE(eOpcodes::STPLS, "STPLS", FF7BackgroundInstruction, 0, "BBBB");
            OPCODE(eOpcodes::LDPLS, "LDPLS", FF7BackgroundInstruction, 0, "BBBB");
            OPCODE(eOpcodes::CPPAL2, "CPPAL2", FF7BackgroundInstruction, 0, "BBBBBBB");
            OPCODE(eOpcodes::RTPAL2, "RTPAL2", FF7BackgroundInstruction, 0, "BBBBBBB");
            OPCODE(eOpcodes::ADPAL2, "ADPAL2", FF7BackgroundInstruction, 0, "BBBBBBBBBB");

            // Camera
            OPCODE(eOpcodes::NFADE, "NFADE", FF7CameraInstruction, 0, "NNBBBBBB");
            OPCODE(eOpcodes::SHAKE, "SHAKE", FF7CameraInstruction, 0, "BBBBBBB");
            OPCODE(eOpcodes::SCRLO, "SCRLO", FF7CameraInstruction, 0, "B");
            OPCODE(eOpcodes::SCRLC, "SCRLC", FF7CameraInstruction, 0, "BBBB");
            OPCODE(eOpcodes::SCRLA, "SCRLA", FF7CameraInstruction, 0, "NwBB");
            OPCODE(eOpcodes::SCR2D, "SCR2D", FF7CameraInstruction, 0, "Nss");
            OPCODE(eOpcodes::SCRCC, "SCRCC", FF7CameraInstruction, 0, "");
            OPCODE(eOpcodes::SCR2DC, "SCR2DC", FF7CameraInstruction, 0, "NNssw");
            OPCODE(eOpcodes::SCRLW, "SCRLW", FF7CameraInstruction, 0, "");
            OPCODE(eOpcodes::SCR2DL, "SCR2DL", FF7CameraInstruction, 0, "NNssw");
            OPCODE(eOpcodes::VWOFT, "VWOFT", FF7CameraInstruction, 0, "NssB");
            OPCODE(eOpcodes::FADE, "FADE", FF7CameraInstruction, 0, "NNBBBBBB");
            OPCODE(eOpcodes::FADEW, "FADEW", FF7CameraInstruction, 0, "");
            OPCODE(eOpcodes::SCRLP, "SCRLP", FF7CameraInstruction, 0, "NwBB");
            OPCODE(eOpcodes::MVCAM, "MVCAM", FF7CameraInstruction, 0, "B");

            // AV
            OPCODE(eOpcodes::BGMOVIE, "BGMOVIE", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::AKAO2, "AKAO2", FF7AudioVideoInstruction, 0, "NNNBwwwww");
            OPCODE(eOpcodes::MUSIC, "MUSIC", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::SOUND, "SOUND", FF7AudioVideoInstruction, 0, "NwB");
            OPCODE(eOpcodes::AKAO, "AKAO", FF7AudioVideoInstruction, 0, "NNNBBwwww");
            OPCODE(eOpcodes::MUSVT, "MUSVT", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::MUSVM, "MUSVM", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::MULCK, "MULCK", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::BMUSC, "BMUSC", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::CHMPH, "CHMPH", FF7AudioVideoInstruction, 0, "BBB");
            OPCODE(eOpcodes::PMVIE, "PMVIE", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::MOVIE, "MOVIE", FF7AudioVideoInstruction, 0, "");
            OPCODE(eOpcodes::MVIEF, "MVIEF", FF7AudioVideoInstruction, 0, "NB");
            OPCODE(eOpcodes::FMUSC, "FMUSC", FF7AudioVideoInstruction, 0, "B");
            OPCODE(eOpcodes::CMUSC, "CMUSC", FF7AudioVideoInstruction, 0, "BBBBBBB");
            OPCODE(eOpcodes::CHMST, "CHMST", FF7AudioVideoInstruction, 0, "NB");

            // Uncat
            OPCODE(eOpcodes::MPDSP, "MPDSP", FF7UncategorizedInstruction, 0, "B");
            OPCODE(eOpcodes::SETX, "SETX", FF7UncategorizedInstruction, 0, "BBBBBB");
            OPCODE(eOpcodes::GETX, "GETX", FF7UncategorizedInstruction, 0, "BBBBBB");
            OPCODE(eOpcodes::SEARCHX, "SEARCHX", FF7UncategorizedInstruction, 0, "BBBBBBBBBB");

            default:
                throw UnknownOpcodeException(this->_address, opcode);
        }
        INC_ADDR;

        // Is it within an "if" statement tracking?
        InstPtr i = this->_insts.back();
        if (i->isCondJump()) exitAddrs.push_back(i->getDestAddress());
        if (!exitAddrs.empty())
            if (i->_address == exitAddrs.back()) exitAddrs.pop_back();

        // Only bail if its the first RET that isn't within an "if" block.
        if (full_opcode == eOpcodes::RET && exitAddrs.empty()) return is_line;
    }
    return is_line;
}