49be05f4fd
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@8973 626c5289-ae23-0410-ae9c-e8d60b6d4f22
91 lines
2.3 KiB
OpenEdge ABL
91 lines
2.3 KiB
OpenEdge ABL
/* -----------------------------------------------------------------------------
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* See the LICENSE file for information on copyright, usage and redistribution
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* of SWIG, and the README file for authors - http://www.swig.org/release.html.
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*
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* attribute.i
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*
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* SWIG library file for implementing attributes.
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* ----------------------------------------------------------------------------- */
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/*
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The following macros convert a pair of set/get methods
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into a "native" attribute.
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Use %attribute when you have a pair of get/set methods
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like in:
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%attribute(A, int, a, get_a, set_a);
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struct A
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{
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int get_a() const;
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void set_a(int aa);
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};
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If you don't provide a 'set' method, a 'read-only' attribute
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is generated, ie, like in:
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%attribute(A, int, c, get_c);
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Use %attribute_ref when you have const/non-const reference
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access methods, like in:
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%attribute_ref(A, int, b);
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struct A
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{
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const int& b() const;
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int& b();
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};
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%attribute_ref(B, int, c);
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struct B
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{
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int& c();
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};
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You can also use
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%attribute_ref(class, type, refname, attr);
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if the internal C++ reference methods have a different name from the
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attribute you want.
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Then you can use the instances like:
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x = A()
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x.a = 3 # calls A::set_a
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print x.a # calls A::get_a
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x.b = 3 # calls A::b()
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print x.b # calls A::b() const
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NOTE: remember that if the type contains commas, such as
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'std::pair<int,int>', you need to use the macro like:
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%attribute_ref(A, %arg(std::pair<int,int>), pval);
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where %arg() 'normalize' the type to be understood as a single
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argument, otherwise the macro will get confused (see the 'cpp'
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documentation).
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*/
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/* we use a simple exception warning here */
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%{
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#include <stdio.h>
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%}
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#define %attribute_exception(code,msg) printf("%s\n",msg)
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#ifndef %arg
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#define %arg(x) x
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#endif
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#ifndef %mange
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#define %mangle(Type...) #@Type
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#endif
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%include <typemaps/attribute.swg>
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