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#pragma once
#include <stdint.h>
#include "consts.h"
#define W2_E_TYPE_MASK (0b11 << 6)
#define W2_E_TYPE_CRIT (0b00 << 6)
#define W2_E_TYPE_WARN (0b01 << 6)
#define W2_E_TYPE_INFO (0b10 << 6)
#define W2_E_TYPE_VERB (0b11 << 6)
/**
* enum storing all error codes
*
* error codes are between 0-63 because the two most significant bits are
* reserved for error type checking
*/
enum w2_e_errorcodes {
// critical error codes
W2_E_CRIT_CONN_LOST = 0x00 | W2_E_TYPE_CRIT,
W2_E_CRIT_COM_UNAVAILABLE = 0x01 | W2_E_TYPE_CRIT, // client-only
W2_E_CRIT_LINE_LOST = 0x02 | W2_E_TYPE_CRIT,
W2_E_CRIT_OBSTACLE_STUCK = 0x03 | W2_E_TYPE_CRIT,
// warnings
W2_E_WARN_BATTERY_LOW = 0x00 | W2_E_TYPE_WARN,
W2_E_WARN_OBSTACLE_DETECTED = 0x01 | W2_E_TYPE_WARN,
W2_E_WARN_CYCLE_EXPIRED = 0x02 | W2_E_TYPE_WARN,
W2_E_WARN_UNCAUGHT_ERROR = 0x03 | W2_E_TYPE_WARN,
};
/**
* error struct
*
* holds an error with type `code`, and an optional `message` with length
* `message_length`
*/
typedef struct {
enum w2_e_errorcodes code;
uint8_t message_length;
char message[];
} w2_s_error;
/** error ring buffer */
extern w2_s_error *g_w2_error_buffer[W2_E_BUFFER_SIZE];
/** stores head of ring buffer */
extern uint8_t g_w2_error_index;
/** stores start of ring buffer */
extern uint8_t g_w2_error_offset;
/** error-handler module main */
void w2_errcatch_main();
/** handle error */
void w2_errcatch_handle_error(w2_s_error *error);
/** append error to error buffer */
void w2_errcatch_throw(enum w2_e_errorcodes code);
/** append error to error buffer (with debug message) */
void w2_errcatch_throw_msg(enum w2_e_errorcodes code, uint16_t length, const char *message);
/**
* allocate and initialize error struct
*
* TODO: doesn't handle null pointers from calloc
*/
w2_s_error *w2_alloc_error(enum w2_e_errorcodes code, uint16_t length, const char *message);
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