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path: root/lib/Sema/SemaTemplate.cpp
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2011-02-27Eliminate a silly little Parse/Sema dance when parsing typenameDouglas Gregor
specifiers such as typename T::template apply<U> Previously, we would turn T::template apply<U> into a TemplateSpecializationType. Then, we'd reprocess that TemplateSpecializationType and turn it into either a TemplateSpecializationType wrapped in an ElaboratedType (when we could resolve "apply" to a template declaration) or a DependentTemplateSpecializationType. We now produce the same ASTs but without generating the intermediate TemplateSpecializationType. The end goal here is to avoid generating TemplateSpecializationTypes with dependent template-names, ever. We're not there yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126589 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Push nested-name-specifier source location information intoDouglas Gregor
DependentScopeDeclRefExpr. Plus, give NestedNameSpecifierLoc == and != operators, since we're going to need 'em elsewhere. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126508 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Switch a few CXXScopeSpec::MakeTrivial() calls over to appropriateDouglas Gregor
NestedNameSpecifierLoc handling. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126486 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Use NestedNameSpecifierLoc within out-of-line variables, function, andDouglas Gregor
tag definitions. Also, add support for template instantiation of NestedNameSpecifierLocs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126470 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Update UsingDecl, UnresolvedUsingTypenameDecl, andDouglas Gregor
UnresolvedUsingValueDecl to use NestedNameSpecifierLoc rather than the extremely-lossy NestedNameSpecifier/SourceRange pair it used to use, improving source-location information. Various infrastructure updates to support NestedNameSpecifierLoc: - AST/PCH (de-)serialization - Recursive AST visitor - libclang traversal (including the first tests of this functionality) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126459 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Retain complete source-location information for C++Douglas Gregor
nested-name-specifiers throughout the parser, and provide a new class (NestedNameSpecifierLoc) that contains a nested-name-specifier along with its type-source information. Right now, this information is completely useless, because we don't actually store the source-location information anywhere in the AST. Call this Step 1/N. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126391 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Teach NestedNameSpecifier to keep track of namespace aliases the sameDouglas Gregor
way it keeps track of namespaces. Previously, we would map from the namespace alias to its underlying namespace when building a nested-name-specifier, losing source information in the process. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126358 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Tweak the CXXScopeSpec API a bit, so that we require theDouglas Gregor
nested-name-specifier and source range to be set at the same time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126347 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-20Implement the C++0x deduced 'auto' feature.Richard Smith
This fixes PR 8738, 9060 and 9132. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126069 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Handle the resolution of a reference to a function template (whichDouglas Gregor
includes explicitly-specified template arguments) to a function template specialization in cases where no deduction is performed or deduction fails. Patch by Faisal Vali, fixes PR7505! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126048 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18When we're creating an expression for an integral template argument ofDouglas Gregor
enumeration type, we were generating an integer literal implicitly casted to the appropriate enumeration type. However, later checks on that expression would strip the implicit cast. This commit tweaks the lame hack, by creating an explicit cast instead of an implicit cast. The right answer is to introduce a SubstNonTypeTemplateParmExpr expression that acts like the substituted result. I'll investigate that soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125818 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-04Tweak my fix for PR8748, and update the incorrect PR number in the test case.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124863 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-04Tighten up the semantics of default template arguments, per C++0xDouglas Gregor
[temp.param]p9 and C++ DR226. Fixes PR8747. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124856 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-04When a function template's template parameter has a default argument,Douglas Gregor
it's okay for the following template parameters to not have default arguments (since those template parameters can still be deduced). Also, downgrade the error about default template arguments in function templates to an extension warning, since this is a harmless C++0x extension. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124855 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Fix whitespace.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124364 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-277bit-ize.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124363 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27When we run into a template parameter that should have a defaultDouglas Gregor
argument but doesn't (because previous template parameters had default arguments), clear out all of the default arguments so that we maintain the invariant that a template parameter has a default argument only if subsequence template parameters also have default arguments. Fixes a crash-on-invalid <rdar://problem/8913649>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124345 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Fix a horrible bug in our handling of C-style casting, where a C-styleDouglas Gregor
derived-to-base cast that also casts away constness (one of the cases for static_cast followed by const_cast) would be treated as a bit-cast rather than a derived-to-base class, causing miscompiles and heartburn. Fixes <rdar://problem/8913298>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124340 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-25Teach TemplateSpecializationTypeLoc::initializeArgLocs() to actuallyDouglas Gregor
generate meaningful [*] template argument location information. [*] Well, as meaningful as possible, given that this entire code path is a hack for when we've lost type-source information. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124211 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-24Re-instate r123977/r123978, my updates of the reference-bindingDouglas Gregor
implementation used by overload resolution to support rvalue references. The original commits caused PR9026 and some hard-to-reproduce self-host breakage. The only (crucial!) difference between this commit and the previous commits is that we now properly check the SuppressUserConversions flag before attempting to perform a second user-defined conversion in reference binding, breaking the infinite recursion chain of user-defined conversions. Rvalue references should be working a bit better now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124121 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-22revert r123977 and r123978 to fix PR9026.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124033 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21Update the reference-binding implementation used for overloadDouglas Gregor
resolution to match the latest C++0x working paper's semantics. The implementation now matching up with the reference-binding implementation used for initialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123977 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-19Implement support for non-type template parameter packs whose type isDouglas Gregor
a pack expansion, e.g., the parameter pack Values in: template<typename ...Types> struct Outer { template<Types ...Values> struct Inner; }; This new implementation approach introduces the notion of an "expanded" non-type template parameter pack, for which we have already expanded the types of the parameter pack (to, say, "int*, float*", for Outer<int*, float*>) but have not yet expanded the values. Aside from creating these expanded non-type template parameter packs, this patch updates template argument checking and non-type template parameter pack instantiation to make use of the appropriate types in the parameter pack. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123845 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-19Change QualType::getTypePtr() to return a const pointer, then change aJohn McCall
thousand other things which were (generally inadvertantly) relying on that. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-18Fix warnings found by gcc-4.6, from -Wunused-but-set-variable andJeffrey Yasskin
-Wint-to-pointer-cast. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123719 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-14Teach template template argument pack expansions to keep track of theDouglas Gregor
number of expansions, when we know it, and propagate that information through Sema. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123493 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-14The variable 'ReusedDecl' is written but never read.Ted Kremenek
Remove this variable (found by clang static analyzer). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123484 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-14The variable 'isTemplateSpecialization' is no longerTed Kremenek
used; nuke all assignments and its declaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123483 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-14Start implementing support for substitution into pack expansions thatDouglas Gregor
involve template parameter packs at multiple template levels that occur within the signatures members of class templates (and partial specializations thereof). This is a work-in-progress that is deficient in several ways, notably: - It only works for template type parameter packs, but we need to also support non-type template parameter packs and template template parameter packs. - It doesn't keep track of the lengths of the substituted argument packs in the expansion, so it can't properly diagnose length mismatches. However, this is a concrete step in the right direction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123425 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-13Only apply the parameter pack matching of C++0x [temp.arg.template]p3Douglas Gregor
when we're actually matching a template template argument to a template template parameter. Otherwise, use strict matching. Fixes <rdar://problem/8859985> clang++: variadics and out-of-line definitions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123385 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-13Implement C++0x [temp.arg.template]p3, which allows slightly fuzzyDouglas Gregor
matching of variadic template template parameters to template arguments. This paragraph was the subject of ISO C++ committee document N2555: Extending Variadic Template Template Parameters. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123348 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-12Refactor and simplify Sema::TemplateParameterListsAreEqual. We had aDouglas Gregor
bunch of duplicated checks for parameter pack/non-pack mismatches. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123343 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-11Add TemplateArgument::CreatePackCopy() to create a new parameter packDouglas Gregor
in ASTContext-allocated memory, copying the provided template arguments. Use this new routine where we can. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123289 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-11Implement C++ [temp.func.order]p5 more directly, by passing down theDouglas Gregor
number of explicit call arguments. This actually fixes an erroneous test for [temp.deduct.partial]p11, where we were considering parameters corresponding to arguments beyond those that were explicitly provided. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123244 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-10Work-in-progress implementation of C++0x [temp.arg.explicit]p9, whichDouglas Gregor
allows an argument pack determines via explicit specification of function template arguments to be extended by further, deduced arguments. For example: template<class ... Types> void f(Types ... values); void g() { f<int*, float*>(0, 0, 0); // Types is deduced to the sequence int*, float*, int } There are a number of FIXMEs in here that indicate places where we need to implement + test retained expansions, plus a number of other places in deduction where we need to correctly cope with the explicitly-specified arguments when deducing an argument pack. Furthermore, it appears that the RecursiveASTVisitor needs to be auditied; it's missing some traversals (especially w.r.t. template arguments) that cause it not to find unexpanded parameter packs when it should. The good news, however, is that the tr1::tuple implementation now works fully, and the tr1::bind example (both from N2080) is actually working now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123163 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Replace the representation of template template argument packDouglas Gregor
expansions with something that is easier to use correctly: a new template argment kind, rather than a bit on an existing kind. Update all of the switch statements that deal with template arguments, fixing a few latent bugs in the process. I"m happy with this representation, now. And, oh look! Template instantiation and deduction work for template template argument pack expansions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122896 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Add semantic analysis for the creation of and an AST representationDouglas Gregor
for template template argument pack expansions. This allows fun such as: template<template<class> class ...> struct apply_impl { /*...*/ }; template<template<class> class ...Metafunctions> struct apply { typedef typename apply_impl<Metafunctions...>::type type; }; However, neither template argument deduction nor template instantiation is implemented for template template argument packs, so this functionality isn't useful yet. I'll probably replace the encoding of template template argument pack expansions in TemplateArgument so that it's harder to accidentally forget about the expansion. However, this is a step in the right general direction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122890 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Update C++ [temp.param]p11 citation to reflect the changes in C++0x. No ↵Douglas Gregor
functionality change git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122878 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Implement C++0x [temp.param]p11 for non-type and template templateDouglas Gregor
parameter packs. Also, the "no template parameters after a template parameter pack" rule only applies to primary class templates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122877 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Implement proper parameter pack matching for non-type templateDouglas Gregor
parameters and template template parameters. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122875 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Implement support for template template parameter packs, e.g.,Douglas Gregor
template<template<class> class ...Metafunctions> struct apply_to_each; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122874 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04Improve our handling of non-type template parameters in partialDouglas Gregor
specializations. We weren't dealing with any of the cases where the type of the non-type template argument differs from the type of the corresponding template parameter in the primary template. We would think that the template parameter in the partial specialization was not deducible (and warn about it, incorrectly), then fail to convert a deduced parameter to the type of the template parameter in the partial specialization (which may involve truncation, among other things). Fixes PR8905. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122851 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03Properly rebuild pack expansions whose pattern is a non-type templateDouglas Gregor
argument. As part of this, be more careful when determining if there are any parameter packs that cannot be expanded. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122776 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03Unwrap template argument packs when checking the template arguments ofDouglas Gregor
a class template partial specialiation, and look through pack expansions when checking the conditions of C++0x [temp.class.spec]p8. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122774 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03Diagnose the presence of unexpanded parameter packs within classDouglas Gregor
template partial specialization arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122769 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-24Non-type template parameter packs cannot have default arguments.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122533 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23Add an AST representation for non-type template parameterDouglas Gregor
packs, e.g., template<typename T, unsigned ...Dims> struct multi_array; along with semantic analysis support for finding unexpanded non-type template parameter packs in types, expressions, and so on. Template instantiation involving non-type template parameter packs probably doesn't work yet. That'll come soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122527 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23Implement parsing of function parameter packs and non-type templateDouglas Gregor
parameter packs (C++0x [dcl.fct]p13), including disambiguation between unnamed function parameter packs and varargs (C++0x [dcl.fct]p14) for cases like void f(T...) where T may or may not contain unexpanded parameter packs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122520 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23Reimplement the comparison of a class template partialDouglas Gregor
specialization's template arguments against the primary template's template arguments using the obvious, correct method of checking the injected-class-name type (C++ [temp.class.spec]p9b3). The previous incarnation of this comparison attempted to use its own formulation of the injected-class-name, which is redudant and, with the introduction of variadic templates, became wrong (again). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122508 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-21Tweak the checking of class template partial specialization argumentsDouglas Gregor
to cope with parameter packs. This is a band-aid I will be revisiting this section when I implement declaration matching semantics for variadic templates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122369 91177308-0d34-0410-b5e6-96231b3b80d8
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