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#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "except.h"
static void do_throw(fz_except_context *ex)
{
assert(ex != NULL);
if(ex->depth >= 0)
longjmp(ex->stack[ex->depth].buffer, 1);
else {
printf("Uncaught exception: %s\n", ex->except.mess);
exit(EXIT_FAILURE); /* Bale through normal channels */
}
}
void fz_throw(fz_context *ctx, char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vsprintf(ctx->except->except.mess, fmt, args);
va_end(args);
do_throw(ctx->except);
}
fz_except *fz_caught(fz_context *ctx)
{
assert(ctx != NULL);
assert(ctx->except != NULL);
return &ctx->except->except;
}
void fz_rethrow(fz_context *ctx)
{
assert(ctx != NULL);
do_throw(ctx->except);
}
void fz_except_xxx_push(fz_except_context *ex)
{
assert(ex != NULL);
if(ex->depth+1 >= MAXDEPTH) {
fprintf(stderr, "Exception stack overflow!\n");
exit(EXIT_FAILURE); /* Bale through normal channels */
}
ex->depth++;
}
void fz_var_xxx(void *e)
{
/* Do nothing */
}
fz_error fz_except_init(fz_context *ctx)
{
fz_except_context *ex;
assert(ctx != NULL);
if (ctx->except != NULL)
return fz_okay;
ex = fz_malloc_nothrow(ctx, sizeof(fz_except_context));
if (ex == NULL)
return fz_error_make("Failed to initialise exception context");
ex->depth = -1;
ctx->except = ex;
return fz_okay;
}
void fz_except_fin(fz_context *ctx)
{
assert(ctx != NULL);
if (ctx->except == NULL)
return;
assert(ctx->except->depth == -1);
free(ctx->except);
ctx->except = NULL;
}
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