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Original file line number | Diff line number | Diff line change |
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/** | ||
* See Copyright Notice in picrin.h | ||
*/ | ||
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#include "picrin.h" | ||
#include "picrin/string.h" | ||
#include "picrin/error.h" | ||
#include "picrin/proc.h" | ||
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pic_str * | ||
pic_get_backtrace(pic_state *pic) | ||
{ | ||
int ai = pic_gc_arena_preserve(pic); | ||
pic_callinfo *ci; | ||
pic_str *trace; | ||
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assert(pic->err != NULL); | ||
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trace = pic_str_new(pic, NULL, 0); | ||
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switch (pic->err->type) { | ||
case PIC_ERROR_OTHER: | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, "error: ")); | ||
break; | ||
case PIC_ERROR_FILE: | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, "file error: ")); | ||
break; | ||
case PIC_ERROR_READ: | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, "read error: ")); | ||
break; | ||
case PIC_ERROR_RAISED: | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, "raised: ")); | ||
break; | ||
} | ||
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trace = pic_strcat(pic, trace, pic->err->msg); | ||
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/* TODO: print error irritants */ | ||
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for (ci = pic->ci; ci != pic->cibase; --ci) { | ||
struct pic_proc *proc = pic_proc_ptr(ci->fp[0]); | ||
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trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, "\n at ")); | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, pic_symbol_name(pic, pic_proc_name(proc)))); | ||
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if (pic_proc_func_p(proc)) { | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, " (native function)")); | ||
} else if (pic_proc_irep_p(proc)) { | ||
trace = pic_strcat(pic, trace, pic_str_new_cstr(pic, " (unknown location)")); /* TODO */ | ||
} | ||
} | ||
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pic_gc_arena_restore(pic, ai); | ||
pic_gc_protect(pic, pic_obj_value(trace)); | ||
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return trace; | ||
} |
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