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typedef enum ErrorType {
ERR_TYPE_LEXER,
ERR_TYPE_PARSER,
ERR_TYPE_RUNTIME,
} ErrorType;
typedef enum ErrorValue {
ERR_UNKNOWN = 0,
ERR_UNMATCHED_STRING,
ERR_UNBALANCED_PAREN,
ERR_NOT_IMPLEMENTED,
ERR_EOF_REACHED,
ERR_UNKNOWN_TOKEN,
ERR_UNKNOWN_OBJ_TYPE,
ERR_NOT_A_SYMBOL,
ERR_SYMBOL_NOT_FOUND,
ERR_OBJ_NOT_CALLABLE,
ERR_NOT_ENOUGH_ARGS,
ERR_WRONG_ARG_TYPE,
ERR_DIVISION_BY_ZERO,
} ErrorValue;
typedef struct Error {
ErrorType type;
ErrorValue value;
size_t line;
size_t col;
} Error;
static const char* error_msgs[] = {
[ERR_UNKNOWN] = "error: something unexpected happened",
[ERR_UNMATCHED_STRING] = "error: unmatched string delimiter",
[ERR_UNBALANCED_PAREN] = "error: unbalanced parentheses",
[ERR_NOT_IMPLEMENTED] = "error: not implemented",
[ERR_EOF_REACHED] = "error: EOF reached",
[ERR_UNKNOWN_TOKEN] = "error: unknown token",
[ERR_UNKNOWN_OBJ_TYPE] = "error: can't eval unknown object type",
[ERR_NOT_A_SYMBOL] = "error: object is not a symbol",
[ERR_SYMBOL_NOT_FOUND] = "error: symbol not found",
[ERR_OBJ_NOT_CALLABLE] = "error: object is not callable",
[ERR_NOT_ENOUGH_ARGS] = "error: not enough arguments",
[ERR_WRONG_ARG_TYPE] = "error: wrong argument type",
[ERR_DIVISION_BY_ZERO] = "error: division by zero",
};
#define ERR_MAX_NUMBER 16
static Error errors[ERR_MAX_NUMBER];
static size_t errors_n = 0;
void
error_push(Error error) {
if (errors_n < ERR_MAX_NUMBER) {
errors[errors_n++] = error;
}
}
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