mirror of
https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
Yukihiro "Matz" Matsumoto
5069fb15e4
`MRB_TRY()` does not work when compiled by C compiler with `cxx_exception` configuration. We should explicitly warn.
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/**
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** @file mruby/throw.h - mruby exception throwing handler
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**
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** See Copyright Notice in mruby.h
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*/
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#ifndef MRB_THROW_H
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#define MRB_THROW_H
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#if defined(MRB_ENABLE_CXX_ABI)
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# if !defined(__cplusplus)
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# error Trying to use C++ exception handling in C code
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# endif
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#endif
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#if defined(MRB_ENABLE_CXX_EXCEPTION)
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# if defined(__cplusplus)
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#define MRB_TRY(buf) try {
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#define MRB_CATCH(buf) } catch(mrb_jmpbuf_impl e) { if (e != (buf)->impl) { throw e; }
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#define MRB_END_EXC(buf) }
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#define MRB_THROW(buf) throw((buf)->impl)
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typedef mrb_int mrb_jmpbuf_impl;
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# else
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# error "need to be compiled with C++ compiler"
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# endif /* __cplusplus */
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#else
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#include <setjmp.h>
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#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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#define MRB_SETJMP _setjmp
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#define MRB_LONGJMP _longjmp
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#else
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#define MRB_SETJMP setjmp
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#define MRB_LONGJMP longjmp
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#endif
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#define MRB_TRY(buf) if (MRB_SETJMP((buf)->impl) == 0) {
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#define MRB_CATCH(buf) } else {
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#define MRB_END_EXC(buf) }
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#define MRB_THROW(buf) MRB_LONGJMP((buf)->impl, 1);
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#define mrb_jmpbuf_impl jmp_buf
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#endif
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struct mrb_jmpbuf {
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mrb_jmpbuf_impl impl;
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#if defined(MRB_ENABLE_CXX_EXCEPTION)
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static mrb_int jmpbuf_id;
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# if defined(__cplusplus)
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mrb_jmpbuf() : impl(jmpbuf_id++) {}
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# endif
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#endif
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};
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#endif /* MRB_THROW_H */
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