/*
 * This file is part of the PikaScript project.
 * http://github.com/pikastech/pikascript
 *
 * MIT License
 *
 * Copyright (c) 2021 lyon 李昂 liang6516@outlook.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __PIKA_VM__H
#define __PIKA_VM__H
#include "PikaObj.h"
#include "dataQueue.h"
#include "dataQueueObj.h"
#include "dataStack.h"

enum Instruct {
#define __INS_ENUM
#include "__instruction_table.cfg"
    __INSTRCUTION_CNT,
};

typedef struct VMState VMState;
struct VMState {
    VMParameters* locals;
    VMParameters* globals;
    Stack stack;
    int32_t jmp;
    int32_t pc;
    ByteCodeFrame* bytecode_frame;
    uint8_t error_code;
    uint8_t line_error_code;
};

VMParameters* pikaVM_run(PikaObj* self, char* pyLine);
VMParameters* pikaVM_runAsm(PikaObj* self, char* pikaAsm);
VMParameters* pikaVM_runByteCodeFrame(PikaObj* self,
                                      ByteCodeFrame* byteCode_frame);

#define instructUnit_getBlockDeepth(self) (((self)->deepth) & 0x0F)
#define instructUnit_getInvokeDeepth(self) (((self)->deepth) >> 4)
#define instructUnit_getInstruct(self) \
    ((enum Instruct)((self)->isNewLine_instruct & 0x7F))
#define instructUnit_getConstPoolIndex(self) ((self)->const_pool_index)
#define instructUnit_getIsNewLine(self) ((self)->isNewLine_instruct >> 7)

#define instructUnit_setBlockDeepth(self, val) \
    do {                                       \
        ((self)->deepth) |= (0x0F & (val));    \
    } while (0)

#define instructUnit_setConstPoolIndex(self, val) \
    do {                                          \
        ((self)->const_pool_index = (val));       \
    } while (0)

#define instructUnit_setInvokeDeepth(self, val)    \
    do {                                           \
        ((self)->deepth) |= ((0x0F & (val)) << 4); \
    } while (0)

#define instructUnit_setInstruct(self, val)             \
    do {                                                \
        ((self)->isNewLine_instruct) |= (0x7F & (val)); \
    } while (0)

#define instructUnit_setIsNewLine(self, val)                   \
    do {                                                       \
        ((self)->isNewLine_instruct) |= ((0x01 & (val)) << 7); \
    } while (0)

InstructUnit* New_instructUnit(uint8_t data_size);
void instructUnit_deinit(InstructUnit* self);

enum Instruct pikaVM_getInstructFromAsm(char* line);

void constPool_init(ConstPool* self);
void constPool_deinit(ConstPool* self);
void constPool_append(ConstPool* self, char* content);
char* constPool_getNow(ConstPool* self);
char* constPool_getNext(ConstPool* self);
char* constPool_getByIndex(ConstPool* self, uint16_t index);
char* constPool_getByOffset(ConstPool* self, uint16_t offset);
uint16_t constPool_getLastOffset(ConstPool* self);
void constPool_print(ConstPool* self);

void byteCodeFrame_init(ByteCodeFrame* bf);
void byteCodeFrame_deinit(ByteCodeFrame* bf);
size_t byteCodeFrame_getSize(ByteCodeFrame* bf);

void instructArray_init(InstructArray* ins_array);
void instructArray_deinit(InstructArray* ins_array);
void instructArray_append(InstructArray* ins_array, InstructUnit* ins_unit);
void instructUnit_init(InstructUnit* ins_unit);
void instructUnit_print(InstructUnit* self);
void instructArray_print(InstructArray* self);
void byteCodeFrame_print(ByteCodeFrame* self);
InstructUnit* instructArray_getByOffset(InstructArray* self, int32_t offset);

#define instructUnit_getSize(InstructUnit_p_self) ((size_t)sizeof(InstructUnit))
#define instructArray_getSize(InsturctArry_p_self) \
    ((size_t)(InsturctArry_p_self)->size)

uint16_t constPool_getOffsetByData(ConstPool* self, char* data);
void instructArray_printWithConst(InstructArray* self, ConstPool* const_pool);
void constPool_update(ConstPool* self);
void instructArray_update(InstructArray* self);
void constPool_printAsArray(ConstPool* self);
void instructArray_printAsArray(InstructArray* self);
void byteCodeFrame_loadByteCode(ByteCodeFrame* self, uint8_t* bytes);
void byteCodeFrame_printAsArray(ByteCodeFrame* self);
void byteCodeFrame_init(ByteCodeFrame* self);
VMParameters* pikaVM_runByteCode(PikaObj* self, uint8_t* bytecode);
InstructUnit* instructArray_getNow(InstructArray* self);
InstructUnit* instructArray_getNext(InstructArray* self);
VMParameters* pikaVM_runFile(PikaObj* self, char* filename);

#endif