104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
#ifndef EXCEPT_INCLUDED
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#define EXCEPT_INCLUDED
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#include <setjmp.h>
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struct Exception {
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const char *reason;
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};
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typedef struct Exception Exception;
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struct Except_Frame {
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struct Except_Frame *prev;
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jmp_buf env;
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const char *file;
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int line;
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const struct Exception *exception;
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};
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typedef struct Except_Frame Except_Frame;
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enum {
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EXCEPT_STATE_ENTERED=0,
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EXCEPT_STATE_RAISED,
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EXCEPT_STATE_HANDLED,
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EXCEPT_STATE_FINALIZED,
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EXCEPT_STATE_COUNT };
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extern struct Except_Frame *except_stack;
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extern const struct Exception assert_failed;
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void except_raise(const struct Exception *e, const char *file, int line);
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// Try Catch MACROS - LINUX
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#define RAISE(e) except_raise(&(e), __FILE__, __LINE__)
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#define RERAISE except_raise(except_frame.exception, \
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except_frame.file, except_frame.line)
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#define RETURN switch (except_stack = except_stack->prev,0) default: return
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#define TRY do { \
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volatile int except_flag; \
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Except_Frame except_frame; \
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except_frame.prev = except_stack; \
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except_stack = &except_frame; \
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except_flag = setjmp(except_frame.env); \
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if (except_flag == EXCEPT_STATE_ENTERED) {
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#define EXCEPT(e) \
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if (except_flag == EXCEPT_STATE_ENTERED) except_stack = except_stack->prev; \
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} else if (except_frame.exception == &(e)) { \
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except_flag = EXCEPT_STATE_HANDLED;
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#define ELSE \
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if (except_flag == EXCEPT_STATE_ENTERED) except_stack = except_stack->prev; \
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} else { \
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except_flag = EXCEPT_STATE_HANDLED;
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#define FINALLY \
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if (except_flag == EXCEPT_STATE_ENTERED) except_stack = except_stack->prev; \
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} { \
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if (except_flag == EXCEPT_STATE_ENTERED) \
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except_flag = EXCEPT_STATE_FINALIZED;
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#define END_TRY \
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if (except_flag == EXCEPT_STATE_ENTERED) except_stack = except_stack->prev; \
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} if (except_flag == EXCEPT_STATE_RAISED) RERAISE; \
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} while (0)
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// Try Catch MACROS - WIN32
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#ifdef WIN32
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#include <windows.h>
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extern int except_index;
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extern void except_init(void);
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extern void except_push(Except_Frame *fp);
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extern void except_pop(void);
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#define RAISE(e) except_raise(&(e), __FILE__, __LINE__)
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#define RERAISE except_raise(except_frame.exception, \
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except_frame.file, except_frame.line)
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#define RETURN switch (except_pop(),0) default: return
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#define TRY do { \
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volatile int except_flag; \
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Except_Frame except_frame; \
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if (except_index == -1) \
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except_init(); \
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except_push(&except_frame); \
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except_flag = setjmp(except_frame.env); \
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if (except_flag == EXCEPT_STATE_ENTERED) {
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#define EXCEPT(e) \
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if (except_flag == EXCEPT_STATE_ENTERED) except_pop(); \
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} else if (except_frame.exception == &(e)) { \
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except_flag = EXCEPT_STATE_HANDLED;
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#define ELSE \
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if (except_flag == EXCEPT_STATE_ENTERED) except_pop(); \
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} else { \
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except_flag = EXCEPT_STATE_HANDLED;
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#define FINALLY \
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if (except_flag == EXCEPT_STATE_ENTERED) except_pop(); \
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} { \
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if (except_flag == EXCEPT_STATE_ENTERED) \
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except_flag = EXCEPT_STATE_FINALIZED;
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#define END_TRY \
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if (except_flag == EXCEPT_STATE_ENTERED) except_pop(); \
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} if (except_flag == EXCEPT_STATE_RAISED) RERAISE; \
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} while (0)
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#endif
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#endif // except.h
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