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add pic_try/pic_catch macros

This commit is contained in:
Yuichi Nishiwaki 2014-03-02 22:36:32 +09:00
parent 887b6a9f91
commit 69ac02f836
1 changed files with 12 additions and 4 deletions
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16
include/picrin.h
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@ -146,6 +146,15 @@ void pic_define(pic_state *, const char *, pic_value); /* symbol is automaticall
pic_value pic_ref(pic_state *, const char *);
void pic_set(pic_state *, const char *, pic_value);
#define pic_try \
pic_try_helper__(GENSYM(pic_try_i__), GENSYM(pic_try_jmp__), GENSYM(pic_try_prev_jmp__))
#define pic_try_helper__(i, here, prev_jmp) \
for (int i = 0; ! i; ) \
for (jmp_buf here, *prev_jmp = pic->jmp; ! i; ) \
for (pic->jmp = &here; ! i++; pic->jmp = prev_jmp) \
if (setjmp(here) == 0)
#define pic_catch else
struct pic_proc *pic_get_proc(pic_state *);
int pic_get_args(pic_state *, const char *, ...);
void pic_defun(pic_state *, const char *, pic_func_t);
@ -179,13 +188,12 @@ void pic_in_library(pic_state *, pic_value);
struct pic_lib *pic_make_library(pic_state *, pic_value);
struct pic_lib *pic_find_library(pic_state *, pic_value);
#define pic_deflibrary(spec) \
pic_deflibrary_helper__(GENSYM(pic_deflib_i__), GENSYM(pic_deflib_prev_lib__), spec)
#define pic_deflibrary_helper__(i, prev_lib, spec) \
for (int i = 0; ! i; ) \
for (struct pic_lib *prev_lib; ! i; ) \
for ((prev_lib = pic->lib), pic_make_library(pic, pic_read(pic, spec)), pic_in_library(pic, pic_read(pic, spec)); ! i++; pic->lib = prev_lib) \
#define pic_deflibrary(spec) \
pic_deflibrary_helper__(GENSYM(pic_deflib_i__), GENSYM(pic_deflib_prev_lib__), spec)
for ((prev_lib = pic->lib), pic_make_library(pic, pic_read(pic, spec)), pic_in_library(pic, pic_read(pic, spec)); ! i++; pic->lib = prev_lib)
void pic_import(pic_state *, pic_value);
void pic_export(pic_state *, pic_sym);