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Fix comparisons of char and wchar_t with wxUniChar[Ref].

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Comparisons didn't work correctly in the other direction as they were not
reversed as needed. Fix this by adding wxDEFINE_COMPARISON_REV() macro which
defines comparisons in terms of the reverse operations and use it for both
wxUniChar and wxUniCharRef.

Closes #14547.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72268 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2012-07-31 16:49:36 +00:00
parent d50905f761
commit 6d93e28adf
3 changed files with 70 additions and 11 deletions
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19
include/wx/defs.h
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@@ -673,9 +673,13 @@ typedef short int WXTYPE;
m(==,x,y,z) m(!=,x,y,z) m(>=,x,y,z) m(<=,x,y,z) m(>,x,y,z) m(<,x,y,z)
/*
This is only used with wxDEFINE_COMPARISON_REV: it passes both the normal
and the reversed comparison operators to the macro.
These are only used with wxDEFINE_COMPARISON_[BY_]REV: they pass both the
normal and the reversed comparison operators to the macro.
*/
#define wxFOR_ALL_COMPARISONS_2_REV(m, x, y) \
m(==,x,y,==) m(!=,x,y,!=) m(>=,x,y,<=) \
m(<=,x,y,>=) m(>,x,y,<) m(<,x,y,>)
#define wxFOR_ALL_COMPARISONS_3_REV(m, x, y, z) \
m(==,x,y,z,==) m(!=,x,y,z,!=) m(>=,x,y,z,<=) \
m(<=,x,y,z,>=) m(>,x,y,z,<) m(<,x,y,z,>)
@@ -687,6 +691,9 @@ typedef short int WXTYPE;
#define wxDEFINE_COMPARISON_REV(op, T1, T2, cmp, oprev) \
inline bool operator op(T2 y, T1 x) { return cmp(x, y, oprev); }
#define wxDEFINE_COMPARISON_BY_REV(op, T1, T2, oprev) \
inline bool operator op(T1 x, T2 y) { return y oprev x; }
/*
Define all 6 comparison operators (==, !=, <, <=, >, >=) for the given
types in the specified order. The implementation is provided by the cmp
@@ -696,6 +703,14 @@ typedef short int WXTYPE;
#define wxDEFINE_COMPARISONS(T1, T2, cmp) \
wxFOR_ALL_COMPARISONS_3(wxDEFINE_COMPARISON, T1, T2, cmp)
/*
Define all 6 comparison operators (==, !=, <, <=, >, >=) for the given
types in the specified order, implemented in terms of existing operators
for the reverse order.
*/
#define wxDEFINE_COMPARISONS_BY_REV(T1, T2) \
wxFOR_ALL_COMPARISONS_2_REV(wxDEFINE_COMPARISON_BY_REV, T1, T2)
/*
This macro allows to define all 12 comparison operators (6 operators for
both orders of arguments) for the given types using the provided "cmp"