#ifndef COPERATORS_H
#define COPERATORS_H

#include "cosmo.h"

// instructions

typedef enum
{
    // STACK/STATE MANIPULATION
    OP_LOADCONST, // pushes const[uint8_t] to the stack
    OP_SETGLOBAL, // pops and sets global[const[uint16_t]]
    OP_GETGLOBAL, // pushes global[const[uint16_t]]
    OP_SETLOCAL,  // pops and sets base[uint8_t]
    OP_GETLOCAL,  // pushes base[uint8_t]
    OP_GETUPVAL,  // pushes closure->upvals[uint8_t]
    OP_SETUPVAL,  // pops and sets closure->upvals[uint8_t]
    OP_PEJMP,     // pops, if false jumps uint16_t
    OP_EJMP,      // if peek(0) is falsey jumps uint16_t
    OP_JMP,       // always jumps uint16_t
    OP_JMPBACK,   // jumps -uint16_t
    OP_POP,       // - pops[uint8_t] from stack
    OP_CALL,      // calls top[-uint8_t] expecting uint8_t results
    OP_CLOSURE,
    OP_CLOSE,
    OP_NEWTABLE,
    OP_NEWARRAY, // really just a table
    OP_INDEX,
    OP_NEWINDEX,
    OP_NEWOBJECT,
    OP_SETOBJECT,
    OP_GETOBJECT,
    OP_GETMETHOD,
    OP_INVOKE,
    OP_ITER,
    OP_NEXT,

    // ARITHMETIC
    OP_ADD,
    OP_SUB,
    OP_MULT,
    OP_DIV,
    OP_MOD,
    OP_POW,
    OP_NOT,
    OP_NEGATE,
    OP_COUNT,
    OP_CONCAT,    // concats uint8_t vars on the stack
    OP_INCLOCAL,  // pushes old value to stack, adds (uint8_t-128) to local[uint8_t]
    OP_INCGLOBAL, // pushes old value to stack, adds (uint8_t-128) to globals[const[uint16_t]]
    OP_INCUPVAL,  // pushes old value to stack, adds (uint8_t-128) to closure->upval[uint8_t]
    OP_INCINDEX,
    OP_INCOBJECT, // pushes old value to stack, adds (uint8_t-128) to obj[const[uint16_t]]

    // EQUALITY
    OP_EQUAL,
    OP_LESS,
    OP_GREATER,
    OP_LESS_EQUAL,
    OP_GREATER_EQUAL,

    // LITERALS
    OP_TRUE,
    OP_FALSE,
    OP_NIL,

    OP_RETURN,
} COPCODE; // there can be a max of 256 instructions

#endif