70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/**
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* See Copyright Notice in picrin.h
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*/
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#include "picrin.h"
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#include "picrin/string.h"
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#include "picrin/error.h"
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#include "picrin/proc.h"
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pic_str *
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pic_get_backtrace(pic_state *pic)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_callinfo *ci;
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pic_str *trace;
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trace = pic_make_str(pic, NULL, 0);
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for (ci = pic->ci; ci != pic->cibase; --ci) {
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struct pic_proc *proc = pic_proc_ptr(ci->fp[0]);
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trace = pic_strcat(pic, trace, pic_make_str_cstr(pic, " at "));
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trace = pic_strcat(pic, trace, pic_make_str_cstr(pic, pic_symbol_name(pic, pic_proc_name(proc))));
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if (pic_proc_func_p(proc)) {
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trace = pic_strcat(pic, trace, pic_make_str_cstr(pic, " (native function)\n"));
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} else if (pic_proc_irep_p(proc)) {
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trace = pic_strcat(pic, trace, pic_make_str_cstr(pic, " (unknown location)\n")); /* TODO */
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}
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}
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, pic_obj_value(trace));
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return trace;
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}
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void
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pic_print_backtrace(pic_state *pic)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_str *trace;
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assert(! pic_undef_p(pic->err));
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if (! pic_error_p(pic->err)) {
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trace = pic_format(pic, "raised: ~s", pic->err);
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} else {
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struct pic_error *e;
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e = pic_error_ptr(pic->err);
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if (e->type != pic_intern_cstr(pic, "")) {
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trace = pic_format(pic, "~s ", pic_obj_value(e->type));
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} else {
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trace = pic_make_str(pic, NULL, 0);
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}
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trace = pic_strcat(pic, trace, pic_format(pic, "error: ~s", pic_obj_value(e->msg)));
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/* TODO: print error irritants */
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trace = pic_strcat(pic, trace, pic_make_str(pic, "\n", 1));
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trace = pic_strcat(pic, trace, e->stack);
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}
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/* print! */
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xfprintf(xstderr, "%s", pic_str_cstr(trace));
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pic_gc_arena_restore(pic, ai);
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}
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