#ifndef error_h
#define error_h
#include "source.h"
typedef enum {
  ERROR_UNRECOGNISED_TOKEN,
  ERROR_UNTERMINATED_STRING_LITERAL,
  ERROR_PARSE_ERROR,
  ERROR_EXPECTED_RPAREN,
  ERROR_EXPECTED_RBRACE,
  ERROR_EXPECTED_EXPRESSION,
  ERROR_INVALID_PATTERN,
  ERROR_EXPECTED_SEMI,
  ERROR_UNKNOWN_VARIABLE,
  WARNING
} error_tag;

typedef struct {
  error_tag tag;
  source_t *source;
  pos_t position;
  int highlight_len;
} error_t;

static inline error_t error(error_tag tag, source_t *source, pos_t position, 
    int highlight_len) {
  error_t it = { 
    .tag = tag, 
    .source = source, 
    .position = position, 
    .highlight_len = highlight_len
  };
  return it;
}
char* error_tag_human_readable(error_tag err_tag);

void error_set_handler(void (*eh)(error_t err));
void error_default_handler(error_t err);

void error_report(error_t error);




#endif