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template<> struct foo<int> { ... };
where "foo" does not refer to a template. Fixes PR3844.
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templates, and keep track of how those member classes were
instantiated or specialized.
Make sure that we don't try to instantiate an explicitly-specialized
member class of a class template, when that explicit specialization
was a declaration rather than a definition.
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member functions of class template specializations, and static data
members. The mechanics are (mostly) present, but the semantic analysis
is very weak.
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templates, e.g.,
template<typename T>
struct Outer {
struct Inner;
};
template<typename T>
struct Outer<T>::Inner {
// ...
};
Implementing this feature required some extensions to ActOnTag, which
now takes a set of template parameter lists, and is the precursor to
removing the ActOnClassTemplate function from the parser Action
interface. The reason for this approach is simple: the parser cannot
tell the difference between a class template definition and the
definition of a member of a class template; both have template
parameter lists, and semantic analysis determines what that template
parameter list means.
There is still some cleanup to do with ActOnTag and
ActOnClassTemplate. This commit provides the basic functionality we
need, however.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76820 91177308-0d34-0410-b5e6-96231b3b80d8
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data members of class templates. We don't instantiate the definitions yet,
however.
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templates.
For example, this now type-checks (but does not instantiate the body
of deref<int>):
template<typename T> T& deref(T* t) { return *t; }
void test(int *ip) {
int &ir = deref(ip);
}
Specific changes/additions:
* Template argument deduction from a call to a function template.
* Instantiation of a function template specializations (just the
declarations) from the template arguments deduced from a call.
* FunctionTemplateDecls are stored directly in declaration contexts
and found via name lookup (all forms), rather than finding the
FunctionDecl and then realizing it is a template. This is
responsible for most of the churn, since some of the core
declaration matching and lookup code assumes that all functions are
FunctionDecls.
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ActOnFunctionDeclarator for function template definitions
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<rdar://problem/6952203>.
To do this, we actually remove a not-quite-correct optimization in the
C++ name lookup routines. We'll revisit this optimization for the
general case once more C++ is working.
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-Makes typeof consistent with sizeof/alignof
-Fixes a bug when '>' is in a typeof expression, inside a template type param:
A<typeof(x>1)> a;
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parse just a single declaration and provide a reasonable diagnostic
when the "only one declarator per template declaration" rule is
violated. This eliminates some ugly, ugly hackery where we used to
require thatn the layout of a DeclGroup of a single element be the
same as the layout of a single declaration.
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Tests and drivers updated, still need to shuffle dirs.
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extensions). This caught a couple bugs in our test suite :)
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arguments. This commit covers checking and merging default template
arguments from previous declarations, but it does not cover the actual
use of default template arguments when naming class template
specializations.
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Examples:
int;
typedef int;
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actually do anything with the template arguments, but they'll be used to create template declarations
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parameters, with some semantic analysis:
- Template parameters are introduced into template parameter scope
- Complain about template parameter shadowing (except in Microsoft mode)
Note that we leak template parameter declarations like crazy, a
problem we'll remedy once we actually create proper declarations for
templates.
Next up: dependent types and value-dependent/type-dependent
expressions.
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- Template parameter scope to hold the template parameters
- Template parameter context for parsing declarators
- Actions for template type parameters and non-type template
parameters
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