Step 1 to make these closer to the definitions used in the standard.
The initializer rule should not include qualifiers and exception specification.
- split cpp_const into add qualifiers_exception_specification and empty rules
- simplify initializer to use new qualifiers_exception_specification rule
Use std::move on this pointer as the default approach to supporting
rvalue ref-qualifiers if a user really wants to wrap.
std::move requires <memory> headers so add swigfragments.swg for all
languages to use common fragments. Just header file fragments for now.
Internally, handle function ref-qualifiers in the function decl type string.
Needed for a whole host of things to work like %feature and %rename.
Add %feature %rename and %ignore testing for ref-qualifiers.
Was not generating code that compiled when the variable was not
a simple member pointer, for example,
a const reference member pointer:
short (Funcs::* const& cc7)(bool) const = cc1;
Fixes#1059
Methods with rvalue ref-qualifiers are ignored by default as it is not
possible to have an rvalue temporary from the target language (which is
needed to call the rvalue ref-qualified method).
A warning 405 is shown mentioning the ignored rvalue ref-qualifier method
which can be seen with the -Wextra option.
cpp_refqualifier.i:15: Warning 405: Method with rvalue ref-qualifier ignored h() const &&.
Usually rvalue and lvalue ref-qualifier overloaded methods are written - the
lvalue method will then be wrapped.
* templates-scope-enforcement:
Test a few %template errors
Add using declarations to templates into typedef table.
Fix type lookup in the presence of using directives and using declarations
More docs on %template
Testcase fix for nameclash in php
%template scope enforcement and class definition fixes
Template documentation tweaks
More consistent formatting of examples in documentation
More consistent formatting of examples in documentation
Documentation corrections to use targetlang formatting
More consistent formatting of examples in documentation
More consistent formatting of examples in documentation
More consistent formatting of examples in documentation
Namespace documentation minor corrections
Improve description of template_parameters_resolve
Minor code optimisation in template_parameters_resolve
Fix scope lookup for template parameters containing unary scope operators
Typemap change for templates
The scoping rules around %template have been specified and enforced.
The %template directive for a class template is the equivalent to an
explicit instantiation of a C++ class template. The scope for a valid
%template instantiation is now the same as the scope required for a
valid explicit instantiation of a C++ template. A definition of the
template for the explicit instantiation must be in scope where the
instantiation is declared and must not be enclosed within a different
namespace.
For example, a few %template and explicit instantiations of std::vector
are shown below:
// valid
namespace std {
%template(vin) vector<int>;
template class vector<int>;
}
// valid
using namespace std;
%template(vin) vector<int>;
template class vector<int>;
// valid
using std::vector;
%template(vin) vector<int>;
template class vector<int>;
// ill-formed
namespace unrelated {
using std::vector;
%template(vin) vector<int>;
template class vector<int>;
}
// ill-formed
namespace unrelated {
using namespace std;
%template(vin) vector<int>;
template class vector<int>;
}
// ill-formed
namespace unrelated {
namespace std {
%template(vin) vector<int>;
template class vector<int>;
}
}
// ill-formed
namespace unrelated {
%template(vin) std::vector<int>;
template class std::vector<int>;
}
When the scope is incorrect, an error now occurs such as:
cpp_template_scope.i:34: Error: 'vector' resolves to 'std::vector' and
was incorrectly instantiated in scope 'unrelated' instead of within scope 'std'.
Previously SWIG accepted the ill-formed examples above but this led to
numerous subtle template scope problems especially in the presence of
using declarations and using directives as well as with %feature and %typemap.
Actually, a valid instantiation is one which conforms to the C++03
standard as C++11 made a change to disallow using declarations and
using directives to find a template.
// valid C++03, ill-formed C++11
using std::vector;
template class vector<int>;
Similar fixes for defining classes using forward class references have
also been put in place. For example:
namespace Space1 {
struct A;
}
namespace Space2 {
struct Space1::A {
void x();
}
}
will now error out with:
cpp_class_definition.i:5: Error: 'Space1::A' resolves to 'Space1::A' and
was incorrectly instantiated in scope 'Space2' instead of within scope 'Space1'.
PROBLEM:
There is a small ommission in parser.y, which will lead
to syntax errors in cases when non-empty throw declaration is
followed by `override`, `final` or both. E.g. in cases like:
void finalOverriden() throw(std::exception) final override;
SOLUTION:
- Add a `THROW LPAREN parms RPAREN virt_specifier_seq` to
exception_specification in Source/CParse/parser.y
- Add several methods in test-suite/cpp11_final_override.i
to verify the fix works.
Previous commit turned on the generation of an extra extend function
wrapper of a member template function when %template was inside a %extend
block instead of calling the real member template - reversed this side
effect.
1) The %extend directive can now optionally support one of the 'class', 'struct' or 'union'.
2) The SWIG library no longer uses the javatype, dtype or cstype typemaps, thereby
completely freeing them up for users to use without having to replicate the library
code that they previously added
Tested by changes to test: java_lib_arrays
Problem: When enum value contains compound expression with a char
constant, the quotes around char constant is missing in the generated
expression. Example:
enum media_type {
YUY2 = ((('2' << 24) | ('Y' << 16)) | ('U' << 8)) | 'Y'
};
The generated C# enum becomes:
public enum media_type {
YUY2 = (((2 << 24)|(Y << 16))|(U << 8))|Y
}
While the correct representation (after this fix) should be:
public enum media_type {
YUY2 = ((('2' << 24)|('Y' << 16))|('U' << 8))|'Y'
}
Causes: the exprcompound promotes the expression type from char to int
and uses $1.val in the generated expression. However $1.val does not
contain the quotes. Since the type is promoted to int, there's no way to
know there's char component in the compound expression.
Solution: in exprcomound, use $1.rawval if $1.type is T_CHAR or T_WCHAR.
The rawval contains quotes which yield correct expression.
Uncomment the "%expect" statement, there are no known Bison versions for which
it doesn't work and it's useful to fail the build if any new conflicts are
introduced.
Closes#478.
This fixes the case when an integer is used as the initializer, such as:
struct W { static const char w = 100; };
The "valuetype" attribute has been added to the "cdecl" Node which enables
us to distinguish the declared type from the type of the initializer.
