forked from KolibriOS/kolibrios
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
|
/*
|
||
|
|
* Tiny BASIC
|
||
|
|
* Error Handling Header
|
||
|
|
*
|
||
|
|
* Copyright (C) Damian Gareth Walker 2019
|
||
|
|
* Created: 15-Aug-2019
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef __ERRORS_H__
|
||
|
|
#define __ERRORS_H__
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Data Definitions
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* error codes */
|
||
|
|
typedef enum {
|
||
|
|
E_NONE, /* no error; everything is fine */
|
||
|
|
E_INVALID_LINE_NUMBER, /* line number is invalid */
|
||
|
|
E_UNRECOGNISED_COMMAND, /* command was not recognised */
|
||
|
|
E_INVALID_VARIABLE, /* variable expected but something else encountered */
|
||
|
|
E_INVALID_ASSIGNMENT, /* = expected but something else encountered */
|
||
|
|
E_INVALID_EXPRESSION, /* an invalid expression was encountered */
|
||
|
|
E_MISSING_RIGHT_PARENTHESIS, /* Encountered "(" without corresponding ")" */
|
||
|
|
E_INVALID_PRINT_OUTPUT, /* failed to parse print output */
|
||
|
|
E_BAD_COMMAND_LINE, /* error on invocation */
|
||
|
|
E_FILE_NOT_FOUND, /* cannot open source file */
|
||
|
|
E_INVALID_OPERATOR, /* unrecognised operator */
|
||
|
|
E_THEN_EXPECTED, /* didn't find the expected THEN after an IF */
|
||
|
|
E_UNEXPECTED_PARAMETER, /* more parameters encountered than expected */
|
||
|
|
E_RETURN_WITHOUT_GOSUB, /* return encountered without a GOSUB */
|
||
|
|
E_DIVIDE_BY_ZERO, /* an attempt to divide by zero */
|
||
|
|
E_OVERFLOW, /* integer is out of range */
|
||
|
|
E_MEMORY, /* out of memory */
|
||
|
|
E_TOO_MANY_GOSUBS, /* recursive GOSUBs exceeded the stack size */
|
||
|
|
E_LAST /* placeholder */
|
||
|
|
} ErrorCode;
|
||
|
|
|
||
|
|
/* error handler structure */
|
||
|
|
typedef struct error_handler ErrorHandler;
|
||
|
|
typedef struct error_handler {
|
||
|
|
void *data; /* private data */
|
||
|
|
void (*set_code) (ErrorHandler *, ErrorCode, int, int);
|
||
|
|
ErrorCode (*get_code) (ErrorHandler *);
|
||
|
|
int (*get_line) (ErrorHandler *);
|
||
|
|
int (*get_label) (ErrorHandler *);
|
||
|
|
char *(*get_text) (ErrorHandler *);
|
||
|
|
void (*destroy) (ErrorHandler *);
|
||
|
|
} ErrorHandler;
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Constructors
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Principal constructor
|
||
|
|
* returns:
|
||
|
|
* ErrorHandler* the new error handler object
|
||
|
|
*/
|
||
|
|
ErrorHandler *new_ErrorHandler (void);
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|