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path: root/lib/Sema/SemaTemplateDeduction.cpp
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2010-08-27Propagate whether an id-expression is the immediate argument ofJohn McCall
an '&' expression from the second caller of ActOnIdExpression. Teach template argument deduction that an overloaded id-expression doesn't give a valid type for deduction purposes to a non-static member function unless the expression has the correct syntactic form. Teach ActOnIdExpression that it shouldn't try to create implicit member expressions for '&function', because this isn't a permitted form of use for member functions. Teach CheckAddressOfOperand to diagnose these more carefully. Some of these cases aren't reachable right now because earlier diagnostics interrupt them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112258 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25Move more stuff out of Sema.h.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112026 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24Struggle mightily against header inclusion in Sema.h.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111904 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-20Another step in the process of making the parser depend on Sema:John McCall
- move DeclSpec &c into the Sema library - move ParseAST into the Parse library Reflect this change in a thousand different includes. Reflect this change in the link orders. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111667 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-19When deducing the element type of an array, ignore qualifiers ifJohn McCall
the context allows us to ignore qualifiers on the array type itself. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111486 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12Move Sema's headers into include/clang/Sema, renaming a few along the way.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Remove some incorrect assertions when deduction template arguments inDouglas Gregor
a template-argument-list. When template template parameters are involved, we won't already have checked the template-argument-list (it may not be known yet!). Fixes PR7807. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110444 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05TDK_InconsistentQuals is really totally different from TDK_Inconsistent.John McCall
Rename it to TDK_Underqualified to avoid this sort of confusion and give it its own diagnostic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110318 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Permit template argument deduction to add qualifiers within ObjC objectJohn McCall
pointers like it can with normal and member pointers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110313 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Preserve calling convention etc. across template instantiations. Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110304 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-11Split DependentNameType into two types. DependentNameType represents theJohn McCall
case of an elaborated-type-specifier like 'typename A<T>::foo', and DependentTemplateSpecializationType represents the case of an elaborated-type-specifier like 'typename A<T>::template B<T>'. The TypeLoc representation of a DependentTST conveniently exactly matches that of an ElaboratedType wrapping a TST. Kill off the explicit rebuild methods for RebuildInCurrentInstantiation; the standard implementations work fine because the nested name specifier is computable in the newly-entered context. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105801 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Substantially alter the design of the Objective C type AST by introducingJohn McCall
ObjCObjectType, which is basically just a pair of one of {primitive-id, primitive-Class, user-defined @class} with a list of protocols. An ObjCObjectPointerType is therefore just a pointer which always points to one of these types (possibly sugared). ObjCInterfaceType is now just a kind of ObjCObjectType which happens to not carry any protocols. Alter a rather large number of use sites to use ObjCObjectType instead of ObjCInterfaceType. Store an ObjCInterfaceType as a pointer on the decl rather than hashing them in a FoldingSet. Remove some number of methods that are no longer used, at least after this patch. By simplifying ObjCObjectPointerType, we are now able to easily remove and apply pointers to Objective-C types, which is crucial for a certain kind of ObjC++ metaprogramming common in WebKit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103870 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13When performing template argument deduction, match Objective C pointersJohn McCall
against pointer patterns. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103706 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-09Be more careful about picking a template parameter when we fail to ↵Douglas Gregor
substitute explicit template arguments into a function template git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103369 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-08When printing an overload candidate that failed due to SFINAE, print aDouglas Gregor
specific message that includes the template arguments, e.g., test/SemaTemplate/overload-candidates.cpp:27:20: note: candidate template ignored: substitution failure [with T = int *] typename T::type get_type(const T&); // expected-note{{candidate ... ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103348 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-08Improve overload-candidate diagnostic for a function template thatDouglas Gregor
failed because the explicitly-specified template arguments did not match its template parameters, e.g., test/SemaTemplate/overload-candidates.cpp:18:8: note: candidate template ignored: invalid explicitly-specified argument for template parameter 'I' void get(const T&); ^ test/SemaTemplate/overload-candidates.cpp:20:8: note: candidate template ignored: invalid explicitly-specified argument for 1st template parameter void get(const T&); ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103344 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29When performing partial ordering of class template partialDouglas Gregor
specializations, substitute the deduced template arguments and check the resulting substitution before concluding that template argument deduction succeeds. This marvelous little fix makes a bunch of Boost.Spirit tests start working. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102601 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29For template argument deduction from class template partialDouglas Gregor
specializations, separate out the deduction part from the checking and substitution of the deduced arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29Access-check during template argument deduction from the context of theJohn McCall
template decl itself, not its context. Testcase to follow; fixes selfhost. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102578 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29Properly switch into the declaring scope of a template when performingJohn McCall
template argument deduction or (more importantly) the final substitution required by such deduction. Makes access control magically work in these cases. Fixes PR6967. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102572 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28When instantiating a function template specialization followingDouglas Gregor
template argument deduction, use the lexical declaration context as the owner for friend function templates. Fixes 2 failures in Boost.Graph. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102489 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-27Make the InjectedClassNameType the canonical type of the current instantiationJohn McCall
of a class template or class template partial specialization. That is to say, in template <class T> class A { ... }; or template <class T> class B<const T*> { ... }; make 'A<T>' and 'B<const T*>' sugar for the corresponding InjectedClassNameType when written inside the appropriate context. This allows us to track the current instantiation appropriately even inside AST routines. It also allows us to compute a DeclContext for a type much more efficiently, at some extra cost every time we write a template specialization (which can be optimized, but I've left it simple in this patch). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102407 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Rename TypenameType to DependentNameType in anticipation of someDouglas Gregor
refactoring work in this area. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100019 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-28After performing template argument deduction for a function template,Douglas Gregor
check deduced non-type template arguments and template template arguments against the template parameters for which they were deduced, performing conversions as appropriate so that deduced template arguments get the same treatment as explicitly-specified template arguments. This is the bulk of PR6723. Also keep track of whether deduction of a non-type template argument came from an array bound (vs. anywhere else). With this information, we enforce C++ [temp.deduct.type]p17, which requires exact type matches when deduction deduces a non-type template argument from something that is not an array bound. Finally, when in a SFINAE context, translate the "zero sized arrays are an extension" extension diagnostic into a hard error (for better standard conformance), which was a minor part of PR6723. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99734 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26When deducing an integral template argument for a non-type templateDouglas Gregor
parameter, keep the integral value exactly as it was in the source code rather than trying to convert it to the type of the non-type template parameter (which may still be dependent!). The value will then be converted to the appropriate type once we check the resulting template arguments. Fixes PR6707. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99611 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25Improve our handling of local instantiation scopes in two related ways:Douglas Gregor
- When substituting template arguments as part of template argument deduction, introduce a new local instantiation scope. - When substituting into a function prototype type, introduce a new "temporary" local instantiation scope that merges with its outer scope but also keeps track of any additions it makes, removing them when we exit that scope. Fixes PR6700, where we were getting too much mixing of local instantiation scopes due to template argument deduction that substituted results into function types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99509 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10Create a new InjectedClassNameType to represent bare-word references to the John McCall
injected class name of a class template or class template partial specialization. This is a non-canonical type; the canonical type is still a template specialization type. This becomes the TypeForDecl of the pattern declaration, which cleans up some amount of code (and complicates some other parts, but whatever). Fixes PR6326 and probably a few others, primarily by re-establishing a few invariants about TypeLoc sizes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Split out types that are non-canonical unless dependent as their ownJohn McCall
category. Use this in a few places to eliminate unnecessary TST cases and do some future-proofing. Provide terrible manglings for typeof. Mangle decltype with some hope of accuracy. Our manglings for some of the cases covered in the testcase are different from gcc's, which I've raised as an issue with the ABI list. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97523 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08Thread a source location into the template-argument deduction routines. ThereJohn McCall
may be some other places that could take advantage of this new information, but I haven't really looked yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-07Require a complete type before examining base classes during template argumentChandler Carruth
deduction. This requires refactoring the deduction to have access to the Sema object instead of merely the ASTContext. Still leaves something to be desired due to poor source location. Fixes PR6257 and half of PR6259. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95528 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Extract a common base class between UnresolvedLookupExpr andJohn McCall
UnresolvedMemberExpr and employ it in a few places where it's useful. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95072 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Implement C++ [temp.deduct.call]p6, template argument deduction for overloadedJohn McCall
arguments. Fix a bug where incomplete explicit specializations were being passed through as legitimate. Fix a bug where the absence of an explicit specialization in an overload set was causing overall deduction to fail. Fixes PR6191. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95052 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27Implement access control for overloaded functions. Suppress access controlJohn McCall
diagnostics in "early" lookups, such as during typename checks and when building unresolved lookup expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94647 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-14After dyn_cast'ing, it generally makes sense to check the *output* ofDouglas Gregor
the dyn_cast against NULL rather than the *input*. Fixes PR6025. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93435 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-11When resolving a single function template specialization to aDouglas Gregor
function, be sure to adjust the resulting argument type to a pointer (if necessary). Fixes PR5910 and PR5949. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93178 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-11Implement name lookup for conversion function template specializationsDouglas Gregor
(C++ [temp.mem]p5-6), which involves template argument deduction based on the type named, e.g., given struct X { template<typename T> operator T*(); } x; when we call x.operator int*(); we perform template argument deduction to determine that T=int. This template argument deduction is needed for template specialization and explicit instantiation, e.g., template<> X::operator float*() { /* ... */ } and when calling or otherwise naming a conversion function (as in the first example). This fixes PR5742 and PR5762, although there's some remaining ugliness that's causing out-of-line definitions of conversion function templates to fail. I'll look into that separately. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93162 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-04Make sure to use ASTContext::getAs*ArrayType() when decomposing arrayDouglas Gregor
types. Fixes APFloat.cpp compilation failure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92523 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-30More fixes to the handling of CVR-comparisons on array types. Adds a method toChandler Carruth
QualType to get CVR-qualifiers through array types, and switches the primary comparison methods to use it. This may allow simplifying some of the callers of getUnqualifiedArrayType. Also fix the normalizing of CV-qualification during template deduction to normalize through arrays and allow a more qualified deduced array type. This fixes PR5911. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92289 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-29Correctly refer to element CVR qualifications when determining if a type isChandler Carruth
more or less cv-qualified than another during implicit conversion and overload resolution ([basic.type.qualifier] p5). Factors the logic out of template deduction and into the ASTContext so it can be shared. This fixes several aspects of PR5542, but not all of them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92248 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-29Get rid of FixedWidthIntType, as suggested by Chris and Eli.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92246 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-21When a template-id refers to a single function template, and theDouglas Gregor
explicitly-specified template arguments are enough to determine the instantiation, and either template argument deduction fails or is not performed in that context, we can resolve the template-id down to a function template specialization (so sayeth C++0x [temp.arg.explicit]p3). Fixes PR5811. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91852 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-21Introduce an assertion to ensure that template argument deduction doesDouglas Gregor
not deduce an "overload" type. Such a deduction indicates a failure in semantic analysis (e.g., PR5811) that currently isn't caught until code-generation time. This assertions makes it clearer that this particular issue is a semantic-analysis problem, not a code-gen problem. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91844 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04Fix "using typename" and the instantiation of non-dependent using declarations.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90614 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-28Remove remaining VISIBILITY_HIDDEN from anonymous namespaces.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90044 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-25Implement support for default template arguments of function templates.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89874 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23Encapsulate "an array of TemplateArgumentLocs and two angle bracket ↵John McCall
locations" into a new class. Use it pervasively throughout Sema. My fingers hurt. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89638 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16First part of changes to eliminate problems with cv-qualifiers andDouglas Gregor
sugared types. The basic problem is that our qualifier accessors (getQualifiers, getCVRQualifiers, isConstQualified, etc.) only look at the current QualType and not at any qualifiers that come from sugared types, meaning that we won't see these qualifiers through, e.g., typedefs: typedef const int CInt; typedef CInt Self; Self.isConstQualified() currently returns false! Various bugs (e.g., PR5383) have cropped up all over the front end due to such problems. I'm addressing this problem by splitting each qualifier accessor into two versions: - the "local" version only returns qualifiers on this particular QualType instance - the "normal" version that will eventually combine qualifiers from this QualType instance with the qualifiers on the canonical type to produce the full set of qualifiers. This commit adds the local versions and switches a few callers from the "normal" version (e.g., isConstQualified) over to the "local" version (e.g., isLocalConstQualified) when that is the right thing to do, e.g., because we're printing or serializing the qualifiers. Also, switch a bunch of Context.getCanonicalType(T1).getUnqualifiedType() == Context.getCanonicalType(T2).getQualifiedType() expressions over to Context.hasSameUnqualifiedType(T1, T2) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88969 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13Revert r88718, which does NOT solve the ↵Douglas Gregor
constructor-template-as-copy-constructor issue. Big thanks to John for finding this git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88724 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13Template argument deduction of a non-type template parameter from aDouglas Gregor
template argument. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-13A constructor template cannot be instantiated to a copyDouglas Gregor
constructor. Make sure that such declarations can never be formed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88718 91177308-0d34-0410-b5e6-96231b3b80d8
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