true and false supported in constant expressions (C++ only). && || == != < > <= >= operators now return type bool (C++ only) and type int for C as per C/C++ standards.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@11677 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/preproc_constants.i

@@ -0,0 +1,82 @@
+%module preproc_constants
+
+// Note: C types are slightly different to C++ types as (a && b) is int in C and bool in C++
+
+// Simple constants
+#define CONST_INT1      10
+#define CONST_INT2      0xFF
+
+#define CONST_UINT1     10u
+#define CONST_UINT2     10U
+#define CONST_UINT3     0xFFu
+#define CONST_UINT4     0xFFU
+
+#define CONST_LONG1     10l
+#define CONST_LONG2     10L
+#define CONST_LONG3     0xFFl
+#define CONST_LONG4     0xFFL
+
+#define CONST_LLONG1    10LL
+#define CONST_LLONG2    10ll
+#define CONST_LLONG3    0xFFll
+#define CONST_LLONG4    0xFFLL
+
+#define CONST_ULLONG1   10ull
+#define CONST_ULLONG2   10ULL
+#define CONST_ULLONG3   0xFFull
+#define CONST_ULLONG4   0xFFULL
+
+#define CONST_DOUBLE1   10e1
+#define CONST_DOUBLE2   10E1
+#define CONST_DOUBLE3   12.3
+#define CONST_DOUBLE4   12.
+#define CONST_DOUBLE5   12.3f
+#define CONST_DOUBLE6   12.3F
+
+#define CONST_BOOL1     true
+#define CONST_BOOL2     false
+
+#define CONST_CHAR      'x'
+#define CONST_STRING1   "const string"
+#define CONST_STRING2   "const" " string"
+
+// Expressions - runtime tests check the type for any necessary type promotions of the expressions
+
+#define INT_AND_BOOL    0xFF & true
+//#define INT_AND_CHAR    0xFF & 'A' /* FIXME compile error */
+#define INT_AND_INT     0xFF & 2
+#define INT_AND_UINT    0xFF & 2u
+#define INT_AND_LONG    0xFF & 2l
+#define INT_AND_ULONG   0xFF & 2ul
+#define INT_AND_LLONG   0xFF & 2ll
+#define INT_AND_ULLONG  0xFF & 2ull
+
+#define BOOL_AND_BOOL   true & true // Note integral promotion to type int
+//#define CHAR_AND_CHAR   'A' & 'B'   // Note integral promotion to type int 
+/* FIXME ABOVE */
+
+
+#define EXPR_MULTIPLY    0xFF * 2
+#define EXPR_DIVIDE      0xFF / 2
+//FIXME #define EXPR_MOD         0xFF % 2
+
+#define EXPR_PLUS        0xFF + 2
+#define EXPR_MINUS       0xFF + 2
+
+#define EXPR_LSHIFT      0xFF << 2
+#define EXPR_RSHIFT      0xFF >> 2
+/* FIXME
+#define EXPR_LT          0xFF < 255
+#define EXPR_GT          0xFF > 255
+#define EXPR_LTE         0xFF <= 255
+#define EXPR_LGE         0xFF >= 255
+*/
+#define EXPR_INEQUALITY  0xFF != 255
+#define EXPR_EQUALITY    0xFF == 255
+#define EXPR_AND         0xFF & 1
+#define EXPR_XOR         0xFF ^ 1
+#define EXPR_OR          0xFF | 1
+#define EXPR_LAND        0xFF && 1
+#define EXPR_LOR         0xFF || 1
+#define EXPR_CONDITIONAL true ? 2 : 2.2
+