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Change typemap matching rules for the default type (SWIGTYPE) to follow template partial specialization type deduction. Fixes some containers of const pointers. SWIGTYPE*& typemps removed and replaced with SWIGTYPE *const&.

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@11958 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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William S Fulton 2010-04-01 18:26:37 +00:00
commit bdb136d611
41 changed files with 477 additions and 122 deletions
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@ -1,6 +1,76 @@
Version 2.0.0 (in progress)
============================
2010-04-01: wsfulton
Numerous subtle typemap matching rule fixes when using the default type. The typemap
matching rules are to take a type and find the best default typemap (SWIGTYPE, SWIGTYPE* etc),
then look for the next best match by reducing the chosen default type. The type reduction
now follows C++ template partial specialization matching rules.
Below are the set of changes made showing the default type reduction
along with the old reduced type and the new version of the reduced type:
SWIGTYPE const &[ANY]
new: SWIGTYPE const &[]
old: SWIGTYPE (&)[ANY]
SWIGTYPE *const [ANY]
new: SWIGTYPE const [ANY]
old: SWIGTYPE *[ANY]
SWIGTYPE const *const [ANY]
new: SWIGTYPE *const [ANY]
old: SWIGTYPE const *[ANY]
SWIGTYPE const *const &
new: SWIGTYPE *const &
old: SWIGTYPE const *&
SWIGTYPE *const *
new: SWIGTYPE const *
old: SWIGTYPE **
SWIGTYPE *const &
new: SWIGTYPE const &
old: SWIGTYPE *&
Additionally, a const SWIGTYPE lookup is used now for any constant type. Some examples, where
T is some reduced type, eg int, struct Foo:
T const
new: SWIGTYPE const
old: SWIGTYPE
T *const
new: SWIGTYPE *const
old: SWIGTYPE *
T const[]
new: SWIGTYPE const[]
old: SWIGTYPE[]
enum T const
new: enum SWIGTYPE const
old: enum SWIGTYPE
T (*const )[]
new: SWIGTYPE (*const )[]
old: SWIGTYPE (*)[]
Reminder: the typemap matching rules can now be seen for any types being wrapped by using
either the -debug-tmsearch or -debug-tmused options.
In practice this leads to some subtle matching rule changes and the majority of users
won't notice any changes, except in the prime area of motivation for this change: Improve
STL containers of const pointers and passing const pointers by reference. This is fixed
because many of the STL containers use a type 'T const&' as parameters and when T is
a const pointer, for example, 'K const*', then the full type is 'K const*const&'. This
means that the 'SWIGTYPE *const&' typemaps now match when T is either a non-const or
const pointer. Furthermore, some target languages incorrectly had 'SWIGTYPE *&' typemaps
when these should have been 'SWIGTYPE *const&'. These have been corrected (Java, C#, Lua, PHP).
*** POTENTIAL INCOMPATIBILITY ***
2010-03-13: wsfulton
[Java] Some very old deprecated pragma warnings are now errors.