#pragma once

#include "common/arch.h"
#include "parse.h"
#include "resolve.h"
#include <stdbool.h>
#include <stdint.h>

typedef enum {
    EoTy_Err,
    EoTy_Reg,
    EoTy_Imm,
    EoTy_Str,
    EoTy_Mem8Reg,
    EoTy_Mem8Imm,
    EoTy_MemU16Reg,
    EoTy_MemU16Imm,
} EvaledOperandTy;

typedef struct {
    EvaledOperandTy ty;
    union {
        Reg reg;
        uint16_t imm;
    };
    uint16_t offset;
} EvaledOperand;

typedef struct {
    const IdentResol* resol;
    size_t extern_id;
    uint16_t surrogate;
} SurrogateExternal;

typedef struct {
    IdentResolver* re;
    Reporter* rep;
    bool second_pass;

    uint16_t* used_imms;
    size_t used_imms_size;

    SurrogateExternal* externals;
    size_t externals_size;
} OperandEvaluator;

void operand_evaluator_construct(
    OperandEvaluator* evaluator, IdentResolver* re, Reporter* rep);
void operand_evaluator_destroy(OperandEvaluator* evaluator);
void operand_evaluator_reset_externals(OperandEvaluator* evaluator);
void operand_evaluator_use_imm(OperandEvaluator* evaluator, uint16_t imm);

EvaledOperand eval_operand_to_imm(
    OperandEvaluator* evaluator, POperand* operand);
EvaledOperand eval_operand_indirection_expr(
    OperandEvaluator* evaluator, POperand* operand);
EvaledOperand eval_operand(OperandEvaluator* evaluator, POperand* operand);