more docs

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@8117 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
Marcelo Matus 2005-12-28 22:42:24 +00:00
commit a78126addd

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@ -81,6 +81,24 @@ Version 1.3.28 (unreleased).
implementation is based simply in forcing to use the
typemaps const SWIGTYPE& (C++)/SWIGTYPE (C) for the
get/set methods instead of the old SWIGTYPE *.
Hence, for 'naturalvar' to work, each target language
must implement 'typemap(in/out) const Type&' properly.
The 'naturalvar' option makes (little dangerous)
workarounds such as:
%apply(const std::string &) { std::string *}
obsoletes.
Note1: If your interface has other kind of workarounds to
deal with the old 'unnatural' way to deal with member
variables (returning/expexting pointers), the
'narturalvar' option could break them.
Note2: the option has no effect over unnamed types, such
as unnamed nested unions.
12/27/2005: mmatus
- Add more 'expressive' result states for the typemap
@ -169,6 +187,30 @@ Version 1.3.28 (unreleased).
get(1.0) -> 3
get("hello") -> Error, explicit constructor
Also, as in C++, now implicit conversions are supported in
variable assigments, and if you have:
A ga;
struct Bar {
A a;
};
you can do:
cvar.ga = A(1)
cvar.ga = 1
cvar.ga = 1.0
cvar.ga = A("hello")
cvar.ga = "hello" -> error, explicit constructor
b = Bar()
b.a = A("hello")
b.a = 1
b.a = 1.0
b.a = "hello" -> error, explicit constructor
Note that the last case, assigning directly a member var,
requires also the 'naturalvar' option.
This support now makes the old '%implicit' macro, which
was found in 'implicit.i' and it was fragile in many ways,