From c6c41e85b2992bba41cac23ac8bab32e29553e84 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Wed, 26 Feb 2014 12:27:56 -0300
Subject: more uniformity for defining system-dependent features

---
 ldo.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

(limited to 'ldo.c')

diff --git a/ldo.c b/ldo.c
index 3440e3f9..22d1f0b3 100644
--- a/ldo.c
+++ b/ldo.c
@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.c,v 2.112 2013/11/08 18:16:33 roberto Exp roberto $
+** $Id: ldo.c,v 2.113 2014/02/15 13:12:01 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -46,30 +46,33 @@
 ** C++ code, with _longjmp/_setjmp when asked to use them, and with
 ** longjmp/setjmp otherwise.
 */
-#if !defined(LUAI_THROW)
+#if !defined(LUAI_THROW)				/* { */
+
+#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP)	/* { */
 
-#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP)
 /* C++ exceptions */
 #define LUAI_THROW(L,c)		throw(c)
 #define LUAI_TRY(L,c,a) \
 	try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; }
 #define luai_jmpbuf		int  /* dummy variable */
 
-#elif defined(LUA_USE_ULONGJMP)
-/* in Unix, try _longjmp/_setjmp (more efficient) */
+#elif defined(LUA_USE_POSIX)				/* }{ */
+
+/* in Posix, try _longjmp/_setjmp (more efficient) */
 #define LUAI_THROW(L,c)		_longjmp((c)->b, 1)
 #define LUAI_TRY(L,c,a)		if (_setjmp((c)->b) == 0) { a }
 #define luai_jmpbuf		jmp_buf
 
-#else
-/* default handling with long jumps */
+#else							/* }{ */
+
+/* ANSI handling with long jumps */
 #define LUAI_THROW(L,c)		longjmp((c)->b, 1)
 #define LUAI_TRY(L,c,a)		if (setjmp((c)->b) == 0) { a }
 #define luai_jmpbuf		jmp_buf
 
-#endif
+#endif							/* } */
 
-#endif
+#endif							/* } */
 
 
 
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