#include "error.h"

const char *vm_strerror(int e) {
    switch (e) {
    case -ERR_IMAGE_MAGIC:       return "Invalid image magic";
    case -ERR_IMAGE_INDEX:       return "Image indices are invalid";
    case -ERR_IMAGE_IO:          return "Image I/O error";
    case -ERR_OPCODE_UNDEFINED:  return "Undefined opcode";
    case -ERR_RANGE:             return "Range error";
    case -ERR_SYMBOL_UNDEFINED:  return "Undefined reference to a symbol";
    case -ERR_OUT_OF_MEMORY:     return "Out of memory";
    case -ERR_OPERAND_TYPE:      return "Operand type error";
    case -ERR_STACK_UNDERFLOW:   return "Stack underflow";
    case -ERR_STACK_OVERFLOW:    return "Stack overflow";
    case -ERR_NOT_FOUND:         return "Unit not found";
    case -ERR_INVALID_STATE:     return "Invalid VM state";
    case -ERR_ERROR_EXIT:        return "Program exited with an error";
    default:
        return "Unknown error";
    }
}