Commit Graph

398 Commits

Author SHA1 Message Date
Alexis Hunt
eef8ee0c8d Implement caching of default constructors on the resolution table. This
isn't yet used for the less controlled environments of initialization.

Also a few random text fixups.

llvm-svn: 132833
2011-06-10 03:50:41 +00:00
Alexis Hunt
ba8e18d9ae Catch the memory leak in a bucket
llvm-svn: 132700
2011-06-07 00:11:58 +00:00
Alexis Hunt
4ac55e33be Reimplement r132572 on top of a FoldingSet, thus hopefully solving both
the self-host failures and Chandler's concerns.

llvm-svn: 132622
2011-06-04 04:32:43 +00:00
Alexis Hunt
967ea7ca6b Revert r132572 to figure out why it broke selfhost and clean it up as
suggested by Chandler.

llvm-svn: 132593
2011-06-03 21:10:40 +00:00
Alexis Hunt
1b02ed8c7c Begin implementing a cache of special member lookups. Currently only
destructors are implemented but other special members are on the way,
which is where the real benefits of this will be visible.

llvm-svn: 132572
2011-06-03 18:36:49 +00:00
Alexis Hunt
ea6f0320f0 Implement implicit deletion of default constructors.
Yes, I'm aware that the diagnostics are awful.

Tests to follow.

llvm-svn: 131203
2011-05-11 22:34:38 +00:00
Alexis Hunt
88c75c311f Clean up trivial default constructors now.
hasTrivialDefaultConstructor() really really means it now.

Also implement a fun standards bug regarding aggregates. Doug, if you'd
like, I can un-implement that bug if you think it is truly a defect.

The bug is that non-special-member constructors are never considered
user-provided, so the following is an aggregate:

struct foo {
  foo(int);
};

It's kind of bad, but the solution isn't obvious - should

struct foo {
  foo (int) = delete;
};

be an aggregate or not?

Lastly, add a missing initialization to FunctionDecl.

llvm-svn: 131101
2011-05-09 21:45:35 +00:00
Chandler Carruth
38a328276c Don't abuse reinterpret cast to do something the API of PointerUnion
provides proper support for. This was caught by
-Wundefined-reinterpret-cast, and I think a reasonable case for it to
warn on.

Also use is<...> instead of dyn_cast<...> when the result isn't needed.

This whole thing should probably switch to using UsuallyTinyPtrVector.

llvm-svn: 130707
2011-05-02 18:54:36 +00:00
Jay Foad
72e705ed94 Like the coding standards say, do not use "using namespace std".
llvm-svn: 130054
2011-04-23 09:06:00 +00:00
Richard Smith
02e85f3bc5 Add support for C++0x's range-based for loops, as specified by the C++11 draft standard (N3291).
llvm-svn: 129541
2011-04-14 22:09:26 +00:00
Axel Naumann
43dec14079 From Vassil Vassilev: Give external source's last resort lookup a chance, even if an identifier could resolve to a builtin.
llvm-svn: 129438
2011-04-13 13:19:46 +00:00
Douglas Gregor
8e93666a71 Objective-C++: The global namespace is an associated namespace of an
Objective-C pointer type. Fixes <rdar://problem/9142559>.

llvm-svn: 129339
2011-04-12 01:02:45 +00:00
Sebastian Redl
7c6c9e971c Reinstate r127112, "Propagate new-style exception spec information to ExtProtoInfo.", this time with the missing header.
llvm-svn: 127118
2011-03-06 10:52:04 +00:00
NAKAMURA Takumi
c92335a87c Revert r127112, "Propagate new-style exception spec information to ExtProtoInfo."
It seems missing "clang/Basic/ExceptionSpecificationType.h".

llvm-svn: 127115
2011-03-06 00:17:36 +00:00
Sebastian Redl
69d37125a9 Propagate new-style exception spec information to ExtProtoInfo.
llvm-svn: 127112
2011-03-05 22:42:26 +00:00
Abramo Bagnara
1c3af96724 Fixed LabelDecl source range and cleaned creation code.
llvm-svn: 127094
2011-03-05 18:21:20 +00:00
Abramo Bagnara
124fdf6dd4 Fixed source range for LabelDecl.
llvm-svn: 126952
2011-03-03 18:24:14 +00:00
Axel Naumann
016538ad2a From Vassil Vassilev:
Add an interface for last resort, unqualified lookup. It can provide results for unqualified lookup when Sema fails to find anything itself.

llvm-svn: 126387
2011-02-24 16:47:47 +00:00
Argyrios Kyrtzidis
12f146a3ef Use PointerUnion::getAddrOf instead of messing with PointerUnion & reinterpret_cast.
llvm-svn: 126021
2011-02-19 04:02:34 +00:00
Chris Lattner
9ba479bd2c fix rdar://9024687, a crash on invalid that we used to silently ignore.
llvm-svn: 125962
2011-02-18 21:16:39 +00:00
Chris Lattner
43e7f31f11 implement basic support for __label__. I wouldn't be shocked if there are
bugs from other clients that don't expect to see a LabelDecl in a DeclStmt,
but if so they should be easy to fix.

This implements most of PR3429 and rdar://8287027

llvm-svn: 125817
2011-02-18 02:08:43 +00:00
Chris Lattner
ebb5c6c717 Switch labels over to using normal name lookup, instead of their
own weird little DenseMap.  Hey look, we now emit unused label
warnings deterministically, amazing.

llvm-svn: 125813
2011-02-18 01:27:55 +00:00
Douglas Gregor
042465709f When searching for visible declarations (e.g., for code completion),
be sure to look at all of the Objective-C class declarations within a
@class. Fixes <rdar://problem/8876207>.

llvm-svn: 125635
2011-02-16 01:39:26 +00:00
NAKAMURA Takumi
f9cbcc4cc2 Fix whitespace.
llvm-svn: 124364
2011-01-27 07:10:08 +00:00
NAKAMURA Takumi
7c2888689d 7bit-ize.
llvm-svn: 124363
2011-01-27 07:09:49 +00:00
Douglas Gregor
e4ff4b56fe Replace the representation of template template argument pack
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.

llvm-svn: 122896
2011-01-05 18:58:31 +00:00
Douglas Gregor
bfe022caa1 When we attempt to create a built-in that involves a library type we
don't have access to (e.g., fprintf, which needs the library type
FILE), fail with a warning and forget about the builtin
entirely. Previously, we would actually provide an error, which breaks
autoconf's super-lame checks for fprintf, longjmp, etc. Fixes PR8316.

llvm-svn: 122744
2011-01-03 09:37:44 +00:00
Francois Pichet
8e8f492f65 Remove obsolete comments.
llvm-svn: 122686
2011-01-02 09:19:59 +00:00
John McCall
db40c7f573 Restore r121752 without modification.
llvm-svn: 121763
2010-12-14 08:05:40 +00:00
John McCall
5546da68bb Pull out r121752 in case it's causing the selfhost breakage.
llvm-svn: 121759
2010-12-14 07:30:51 +00:00
John McCall
aa6d98c160 Factor out most of the extra state in a FunctionProtoType into a separate
class to be passed around.  The line between argument and return types and
everything else is kindof vague, but I think it's justifiable.

llvm-svn: 121752
2010-12-14 06:51:39 +00:00
Douglas Gregor
a3b23b025b Don't walk the translation unit context to produce protocol names when
global code completions are disabled (e.g., because they are
cached). Also, make sure that forward-declared protocols are visited
when we look for all visible names within a declaration context.

Previously, we would end up with duplicate completions for protocols.

llvm-svn: 121416
2010-12-09 21:44:02 +00:00
Douglas Gregor
2da6670ef0 Do not change the size of LookupResult::Filter based on the NDEBUG
macri; the extra bool fits into padding anyway.

llvm-svn: 120708
2010-12-02 16:19:31 +00:00
Fariborz Jahanian
e8473c2feb Such function decls,as objc's objc_msgSend, builtins in
a specific language. We are adding such language info. by
extensing Builtins.def and via a language flag added
to LIBBUILTIN/BUILTIN and check for that when deciding
a name is builtin or not. Implements //rdar://8689273.

llvm-svn: 120429
2010-11-30 17:35:24 +00:00
Fariborz Jahanian
d11da7e52a Restore patch reversed in r118475. Fixes
// rdar://8632525

llvm-svn: 118634
2010-11-09 21:38:20 +00:00
Ted Kremenek
b4ea9a843a Fix memory leak of IdentifierIterator object.
llvm-svn: 118371
2010-11-07 06:11:33 +00:00
Douglas Gregor
05fcf84d14 Teach code completion to provide property results when the property
can be used to automatically synthesize an ivar.

llvm-svn: 118052
2010-11-02 20:36:02 +00:00
Argyrios Kyrtzidis
706bbf84d8 When doing name lookup for members don't look into global/namespace scope.
Better performance and fixes rdar://8603569.

llvm-svn: 117656
2010-10-29 16:12:50 +00:00
Douglas Gregor
af1daa9854 Remove redundant test
llvm-svn: 117446
2010-10-27 14:20:34 +00:00
Douglas Gregor
2a1d72d078 Teach typo correction not to return the same keyword that matches a
typo. This can happen with context-sensitive keywords like "super",
when typo correction didn't know that "super" wasn't permitted in this
context.

llvm-svn: 117372
2010-10-26 17:18:00 +00:00
Douglas Gregor
e63d087bcb C++ [basic.scope.hiding] allows an ordinary name to hide a non-tag
name *in the same scope*, but not across scopes. Implement the
highlighted condition.

llvm-svn: 117212
2010-10-23 16:06:17 +00:00
Douglas Gregor
c0d2490ac4 In the presence of using declarations, we can find the same class
members in class subobjects of different types. So long as the
underlying declaration sets are the same, and the declaration sets
involve non-instance members, this is not an ambiguity.

llvm-svn: 117163
2010-10-22 22:08:47 +00:00
Douglas Gregor
d507d77432 Fix handling of property and ivar lookup in typo correction; the two
kinds of lookup into Objective-C classes were tangled together, a
situation that was compounded by automatically synthesized ivars.

llvm-svn: 116907
2010-10-20 03:06:34 +00:00
Douglas Gregor
87074f19e8 Introduce a simple cache for unqualified typo corrections, so that we
don't repeatedly loop through identifiers, correcting the same typo'd
identifier over and over again. 

We still bail out after 20 typo corrections, but this should help
improve performance in the common case where we're typo-correcting
because the user forgot to include a header.

llvm-svn: 116901
2010-10-20 01:32:02 +00:00
Douglas Gregor
1f32ebe892 Eliminate another ordering dependency in typo correction. Re-enable typo.m, which seems to be working properly.
llvm-svn: 116894
2010-10-20 01:01:57 +00:00
Douglas Gregor
c1fb15ea8f Provide an upper bound to the edit-distance algorithm when performing
typo correction, to allow early exits.

llvm-svn: 116868
2010-10-19 22:14:33 +00:00
Douglas Gregor
93910a5a59 Improve the performance of typo correction, by using a simple
computation to compute the lower bound of the edit distance, so that
we can avoid computing the edit distance for names that will clearly
be rejected later. Since edit distance is such an expensive algorithm
(M x N), this leads to a 7.5x speedup when correcting NSstring ->
NSString in the presence of a Cocoa PCH.

llvm-svn: 116849
2010-10-19 19:39:10 +00:00
Douglas Gregor
26c5578d84 When performing typo correction, keep track of whether the last lookup
we did was an acceptable lookup. If it is, then we can re-use that
lookup result. If it isn't, we have to perform the lookup again. This
is almost surely the cause behind the mysterious typo.m failures on
some builders; we were getting the wrong lookup results returned.

llvm-svn: 116586
2010-10-15 16:49:56 +00:00
Douglas Gregor
af9eb59274 When we're in the context of an Objective-C message send's receiver,
typo correction prefers "super" over other, equivalent completions. I
believe this will fix the regression on the buildbot.

llvm-svn: 116574
2010-10-15 13:35:25 +00:00
Douglas Gregor
57756eabc9 When performing typo correction, look through the set of known
identifiers to determine good typo-correction candidates. Once we've
identified those candidates, we perform name lookup on each of them
and the consider the results. 

This optimization makes typo correction > 2x faster on a benchmark
example using a single typo (NSstring) in a tiny file that includes
Cocoa.h from a precompiled header, since we are deserializing far less
information now during typo correction.

There is a semantic change here, which is interesting. The presence of
a similarly-named entity that is not visible can now affect typo
correction. This is both good (you won't get weird corrections if the
thing you wanted isn't in scope) and bad (you won't get good
corrections if there is a similarly-named-but-completely-unrelated
thing). Time will tell whether it was a good choice or not.

llvm-svn: 116528
2010-10-14 22:11:03 +00:00
Douglas Gregor
0afa7f66cd Tweak the typo-correction implementation to determine corrections
solely based on the names it sees, rather than actual declarations it
gets. In essence, we determine the set of names that are "close
enough" to the typo'd name. Then, we perform name lookup for each of
those names, filtering out those that aren't actually visible, and
typo-correct from the remaining results.

Overall, there isn't much of a change in the behavior of typo
correction here. The only test-suite change comes from the fact that
we make good on our promise to require that the user type 3 characters
for each 1 character corrected. 

The real intent behind this change is to set the stage for an
optimization to typo correction (so that we don't need to deserialize
all declarations in a translation unit) and future work in finding
missing qualification ("'vector' isn't in scope; did you mean
'std::vector'?). Plus, the code is cleaner this way.

llvm-svn: 116511
2010-10-14 20:34:08 +00:00
Chris Lattner
a3d232ad27 zap more dead code.
llvm-svn: 113076
2010-09-04 18:19:08 +00:00
Ted Kremenek
0ef508d301 Split ObjCInterfaceDecl::ReferencedProtocols into two lists: ReferencedProtocols and AllReferencedProtocols. ReferencedProtocols
(and thus protocol_begin(), protocol_end()) now only contains the list of protocols that were directly referenced in
an @interface declaration.  'all_referenced_protocol_[begin,end]()' now returns the set of protocols that were referenced
in both the @interface and class extensions.  The latter is needed for semantic analysis/codegen, while the former is
needed to maintain the lexical information of the original source.

Fixes <rdar://problem/8380046>.

llvm-svn: 112691
2010-09-01 01:21:15 +00:00
Sebastian Redl
bd59576541 Make inline namespace not be transparent after all. The concept simply doesn't fit. Instead, special-case the few places where transparent contexts have the desired behavior for inline namespaces. Fixes a redeclaration issue in inline namespaces.
llvm-svn: 112637
2010-08-31 20:53:31 +00:00
John McCall
8302463dc6 Split out a header to hold APIs meant for the Sema implementation from Sema.h.
Clients of Sema don't need to know (for example) the list of diagnostics we
support.

llvm-svn: 112093
2010-08-25 22:03:47 +00:00
John McCall
e302792b61 GCC didn't care for my attempt at API compatibility, so brute-force everything
to the new constants.

llvm-svn: 112047
2010-08-25 11:45:40 +00:00
John McCall
aab3e41eb2 Split FunctionScopeInfo and BlockScopeInfo into their own header.
llvm-svn: 112038
2010-08-25 08:40:02 +00:00
John McCall
a1e130be25 Remove the DenseSet dependency from Sema.h.
llvm-svn: 112030
2010-08-25 07:03:20 +00:00
John McCall
19c1bfd1b0 Move more stuff out of Sema.h.
llvm-svn: 112026
2010-08-25 05:32:35 +00:00
John McCall
cc14d1fd23 More header elimination. The goal of all this is to allow Parser to
#include Sema.h while keeping all the AST declarations opaque.  That may
not be reasonably attainable, though.

llvm-svn: 111907
2010-08-24 08:50:51 +00:00
John McCall
4887165193 DeclPtrTy -> Decl *
llvm-svn: 111733
2010-08-21 09:40:31 +00:00
John McCall
8b0666cf79 Another step in the process of making the parser depend on Sema:
- 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.

llvm-svn: 111667
2010-08-20 18:27:03 +00:00
Douglas Gregor
3998219789 Extend the code-completion caching infrastructure to include global
declarations (in addition to macros). Each kind of declaration maps to
a certain set of completion contexts, and the ASTUnit completion logic
introduces the completion strings for those declarations if the actual
code-completion occurs in one of the contexts where it matters. 

There are a few new code-completion-context kinds. Without these,
certain completions (e.g., after "using namespace") would need to
suppress all global completions, which would be unfortunate.

Note that we don't get the priorities right for global completions,
because we don't have enough type information. We'll need a way to
compare types in an ASTContext-agnostic way before this can be
implemented.

llvm-svn: 111093
2010-08-15 06:18:01 +00:00
Douglas Gregor
c3a6ade0bb Move Sema's headers into include/clang/Sema, renaming a few along the way.
llvm-svn: 110945
2010-08-12 20:07:10 +00:00
John McCall
2ded5d25a9 Don't try to implicitly declare special members of an invalid class.
Fixes a crash in a rather large and difficult-to-reduce test case.

llvm-svn: 110882
2010-08-11 23:52:36 +00:00
Abramo Bagnara
d6d2f18905 Added locations and type source info for DeclarationName.
llvm-svn: 110860
2010-08-11 22:01:17 +00:00
Douglas Gregor
13e6587313 If name lookup finds different type declarations in different scopes
that actually refer to the same underlying type, it is not an
ambiguity; add uniquing support based on the canonical type of type
declarations. Fixes <rdar://problem/8296180>.

llvm-svn: 110806
2010-08-11 14:45:53 +00:00
Douglas Gregor
8ed0c0b99d Introduce -f{no-}spell-checking options to enable/disable
spell-checking. By default, spell-checking is enabled for Clang
(obviously) but disabled in CIndex for performance reasons.

llvm-svn: 107992
2010-07-09 17:35:33 +00:00
Douglas Gregor
9672f92f7f Lazily declare default constructors. We now delay the construction of
declarations for implicit default constructors, copy constructors,
copy assignment operators, and destructors. On a "simple" translation
unit that includes a bunch of C++ standard library headers, we
generate relatively few of these implicit declarations now:

  4/159 implicit default constructors created
  18/236 implicit copy constructors created
  70/241 implicit copy assignment operators created
  0/173 implicit destructors created

And, on this translation unit, this optimization doesn't really
provide any benefit. I'll do some more performance measurements soon,
but this completes the implementation work for <rdar://problem/8151045>.

llvm-svn: 107551
2010-07-03 00:47:00 +00:00
Douglas Gregor
a6d695057c Lazily declare implicit copy constructors.
llvm-svn: 107543
2010-07-02 23:41:54 +00:00
Douglas Gregor
52b7282081 Introduce a new routine, LookupConstructors(), and use it for all
constructor-name lookup.

llvm-svn: 107536
2010-07-02 23:12:18 +00:00
Douglas Gregor
330b9cff74 Lazily declare copy-assignment operators.
llvm-svn: 107521
2010-07-02 21:50:04 +00:00
Douglas Gregor
7454c563f1 Lazily declare the implicitly-declared destructor in a C++ class.
llvm-svn: 107510
2010-07-02 20:37:36 +00:00
Douglas Gregor
e71eddac59 Add a new routine Sema::LookupDestructor and make all destructor-lookup calls use that routine
llvm-svn: 107444
2010-07-01 22:47:18 +00:00
Douglas Gregor
5a5fcd83c5 Be a bit more careful with undefined CXXRecordDecls. Fixes
rdar://problem/8124080 and PR7118.

llvm-svn: 107358
2010-07-01 00:21:21 +00:00
John McCall
f24d7bbbcd A more minimal fix for PR6762.
llvm-svn: 104991
2010-05-28 18:45:08 +00:00
John McCall
61d8258fa3 Roll back r104941.
llvm-svn: 104990
2010-05-28 18:25:28 +00:00
John McCall
2177a9b65a Add a new attribute on records, __attribute__((adl_invisible)), and define
the x86-64 __va_list_tag with this attribute.  The attribute causes the
affected type to behave like a fundamental type when considered by ADL.

(x86-64 is the only target we currently provide with a struct-based
__builtin_va_list)

Fixes PR6762.

llvm-svn: 104941
2010-05-28 08:20:36 +00:00
John McCall
0af3d3b0f4 Optimize and complete associated-class-and-namespace collection from
a type.

llvm-svn: 104938
2010-05-28 06:08:54 +00:00
Douglas Gregor
3e51e173b6 Reinstate r104117, Chandler Carruth's change that "[provides] a naming
class for UnresolvedLookupExprs, even when occuring on template
names" along with a fix for an Objective-C++ crasher it introduced.

llvm-svn: 104277
2010-05-20 20:58:56 +00:00
Douglas Gregor
fe60c14263 Remove accidental commit
llvm-svn: 104207
2010-05-20 02:26:51 +00:00
Douglas Gregor
527786ea3a Various small fixes for construction/destruction of Objective-C++
instance variables:
  - Use isRecordType() rather than isa<RecordType>(), so that we see
  through typedefs in ivar types.
  - Mark the destructor as referenced
  - Perform C++ access control on the destructor

llvm-svn: 104206
2010-05-20 02:24:22 +00:00
Daniel Dunbar
fd5ed84873 Revert r104117, "Provide a naming class for UnresolvedLookupExprs, even when
occuring on..." which breaks some Objective-C code. Working on getting a test
case...

llvm-svn: 104150
2010-05-19 21:07:14 +00:00
Chandler Carruth
8fd2b8935e Provide a naming class for UnresolvedLookupExprs, even when occuring on
template names. We were completely missing naming classes for many unqualified
lookups, but this didn't trigger code paths that need it. This removes part of
an optimization that re-uses the template name lookup done by the parser to
determine if explicit template arguments actually form a template-id.
Unfortunately the technique for avoiding the duplicate lookup lost needed data
such as the class context in which the lookup succeeded.

llvm-svn: 104117
2010-05-19 09:39:06 +00:00
Douglas Gregor
86ad085b40 Give a slight edge to the context-sensitive keyword 'super' over
non-function-local declarations with names similar to what the user
typed. For example, this allows us to correct 'supper' to 'super' in
an Objective-C message send, even though the C function 'isupper' has
the same edit distance.

llvm-svn: 104023
2010-05-18 16:30:22 +00:00
Douglas Gregor
5fd04d4832 Tweak typo-correction logic a bit regarding "super", so that we
consider "super" as a candidate whenever we're parsing an expression
within an Objective-C method in an interface that has a superclass. At
some point, we'd like to give "super" a little edge over non-local
names; that will come later.

llvm-svn: 104022
2010-05-18 16:14:23 +00:00
Douglas Gregor
f3d3ae665c Make sure to search semantic scopes and appropriate template-parameter
scopes during unqualified name lookup that has fallen out to namespace
scope. Fixes PR7133.

llvm-svn: 103766
2010-05-14 04:53:42 +00:00
John McCall
0b66eb38c7 It turns out that basically every caller to RequireCompleteDeclContext
already knows what context it's looking in.  Just pass that context in
instead of (questionably) recalculating it.

llvm-svn: 102818
2010-05-01 00:40:08 +00:00
Douglas Gregor
8b895228d9 Fix ADL for types declared in transparent decls, from Alp Toker!
llvm-svn: 102695
2010-04-30 07:08:38 +00:00
Douglas Gregor
516d672310 When name lookup finds a single declaration that was imported via a
using declaration, look at its underlying declaration to determine the
lookup result kind (e.g., overloaded, unresolved). Fixes at least one
issue in Boost.Bimap.

llvm-svn: 102317
2010-04-25 21:15:30 +00:00
Douglas Gregor
645d76f271 When performing name lookup for an operator name, be sure to look
through using declarations. Fixes ~18 tests in Boost.Fusion.

llvm-svn: 102311
2010-04-25 20:25:43 +00:00
John McCall
b9467b6c9a Recommit r102215, this time being more careful to only set the "principal
declaration" (i.e. the only which will actually be looked up) to have the
non-member-operator bit.

llvm-svn: 102231
2010-04-24 01:30:58 +00:00
Devang Patel
f8b55d478c Revert r102215. This causes clang crash while compiling a test case from gdb testsuite.
llvm-svn: 102224
2010-04-24 00:40:35 +00:00
John McCall
67b29a26df Transition the last acceptable-result filter kind in LookupResult over to use
a simple IDNS mask by introducing a namespace for non-member operators.

llvm-svn: 102215
2010-04-23 21:37:18 +00:00
John McCall
e87beb2591 Recommit my change to how C++ does elaborated type lookups, now with
two bugfixes which fix selfhost and (hopefully) the nightly tests.

llvm-svn: 102198
2010-04-23 18:46:30 +00:00
Daniel Dunbar
45b2d8ab42 Revert "C++ doesn't really use "namespaces" for different kinds of names the same", which seems to break most C++ nightly test apps.
llvm-svn: 102174
2010-04-23 13:07:39 +00:00
John McCall
a245671ae0 C++ doesn't really use "namespaces" for different kinds of names the same
way that C does.  Among other differences, elaborated type specifiers
are defined to skip "non-types", which, as you might imagine, does not
include typedefs.  Rework our use of IDNS masks to capture the semantics
of different kinds of declarations better, and remove most current lookup
filters.  Removing the last remaining filter is more complicated and will
happen in a separate patch.

Fixes PR 6885 as well some spectrum of unfiled bugs.

llvm-svn: 102164
2010-04-23 02:41:41 +00:00
Douglas Gregor
e93525ed95 Kill off IDNS_ObjCImplementation and IDNS_ObjCCategoryName; they
aren't and never were used. There's a gap in the bit pattern for IDNS
now, but I'm sure *someone* will fill it.

llvm-svn: 102143
2010-04-22 23:19:50 +00:00
Douglas Gregor
0b59e80db5 When searching for code-completion and typo-correction candidates,
look from an Objective-C class or category to its implementation, to
pick up synthesized ivars. Fixes a problem reported by David
Chisnall.

llvm-svn: 101792
2010-04-19 18:02:19 +00:00
Douglas Gregor
b2ccf010fb Feed proper source-location information into Sema::LookupSingleResult,
in case it ends up doing something that might trigger diagnostics
(template instantiation, ambiguity reporting, access
reporting). Noticed while working on PR6831.

llvm-svn: 101412
2010-04-15 22:33:43 +00:00
Douglas Gregor
280e1ee0ae Teach typo correction about various language keywords. We can't
generally recover from typos in keywords (since we would effectively
have to mangle the token stream). However, there are still benefits to
typo-correcting with keywords:
  - We don't make stupid suggestions when the user typed something
  that is similar to a keyword. 
  - We can suggest the keyword in a diagnostic (did you mean
  "static_cast"?), even if we can't recover and therefore don't have
  a fix-it.

llvm-svn: 101274
2010-04-14 20:04:41 +00:00
Douglas Gregor
fd0e2e31be Return the corrected DeclarationName from Sema::CorrectTypo rather
than just a bool indicating that correction occurred. No actual
functionality change (it's still always used like a bool), but this
refactoring will be used to support typo correction to keywords.

llvm-svn: 101259
2010-04-14 17:09:22 +00:00
Jeffrey Yasskin
c76498d409 Make CXXScopeSpec invalid when incomplete, and propagate that into any
Declarator that depends on it.  This fixes several redundant errors and bad
recoveries.

llvm-svn: 100779
2010-04-08 16:38:48 +00:00
Rafael Espindola
c50c27cca8 the big refactoring bits of PR3782.
This introduces FunctionType::ExtInfo to hold the calling convention and the
noreturn attribute. The next patch will extend it to include the regparm
attribute and fix the bug.

llvm-svn: 99920
2010-03-30 20:24:48 +00:00
Douglas Gregor
bcf0a47e7a When performing name lookup for the allocation or deallocation
operators, make sure that the implicitly-declared global new and
delete operators are always available. Fixes PR5904.

llvm-svn: 99382
2010-03-24 05:07:21 +00:00
John McCall
a332b953e8 When elevating access along an inheritance path, initialize the computed
access to the (elevated) access of the accessed declaration, if applicable,
rather than plunking that access onto the end after we've calculated the
inheritance access.

Also, being a friend of a derived class gives you public access to its
members (subject to later modification by further inheritance);  it does
not simply ignore a single location of restricted inheritance.

Also, when computing the best unprivileged path to a subobject, preserve
the information that the worst path might be AS_none (forbidden) rather
than a minimum of AS_private.

llvm-svn: 98899
2010-03-18 23:49:19 +00:00
Douglas Gregor
ea16606fcd During C++ name lookup, use DeclContext::Equals() rather than
comparing DeclContext pointers, to avoid having to remember to call
getPrimaryContext() everywhere. This is the last part PR6594.

llvm-svn: 98546
2010-03-15 15:26:48 +00:00
Douglas Gregor
6623006249 Implement C++ [temp.local]p8, which specifies that a template
parameter hides a namespace-scope declararion with the same name in an
out-of-line definition of a template. The lookup requires a strange
interleaving of lexical and semantic scopes (go C++), which I have not
yet handled in the typo correction/code completion path.

Fixes PR6594.

llvm-svn: 98544
2010-03-15 14:33:29 +00:00
Douglas Gregor
36c569fb33 Eliminate the default arguments to ASTContext::getFunctionType(),
fixing up a few callers that thought they were propagating NoReturn
information but were in fact saying something about exception
specifications.

llvm-svn: 96766
2010-02-21 22:15:06 +00:00
Douglas Gregor
337caf9e3e Implement C++ name lookup for instance variables of Objective-C classes
from an instance method. Previously, we were following the Objective-C
name lookup rules for ivars, which are of course completely different
from and incompatible with the Objective-C++ rules.

For the record, the Objective-C++ rules are the sane ones.

This is another part of <rdar://problem/7660386>.

llvm-svn: 96677
2010-02-19 16:08:35 +00:00
Douglas Gregor
d3a5918742 In C++, allow builtins to be referred to via qualified name lookup, e.g.,
::__builtin_va_copy

Fixes one of the Firefox issues in PR5511.

llvm-svn: 95966
2010-02-12 05:48:04 +00:00
John McCall
5b0829a321 Improve access control diagnostics. Perform access control on member-pointer
conversions.  Fix an access-control bug where privileges were not considered
at intermediate points along the inheritance path.  Prepare for friends.

llvm-svn: 95775
2010-02-10 09:31:12 +00:00
John McCall
bc077cf589 Thread a source location into the template-argument deduction routines. There
may be some other places that could take advantage of this new information,
but I haven't really looked yet.

llvm-svn: 95600
2010-02-08 23:07:23 +00:00
Douglas Gregor
3ce7493c35 Teach C++ name lookup that it's okay to look in a scope without a
context. This happens fairly rarely (which is why we got away with
this bug). Fixes PR6184, where we skipped over the template parameter
scope while tentatively parsing.

llvm-svn: 95376
2010-02-05 07:07:10 +00:00
Douglas Gregor
0c8a172911 Fix a crash with ill-formed code within a method in an ill-formed
category implementation, which showed up during (attempted) typo
correction. Fixes <rdar://problem/7605289>.

llvm-svn: 95334
2010-02-04 23:42:48 +00:00
John McCall
67da35c832 Extract a common structure for holding information about the definition
of a C++ record.  Exposed a lot of problems where various routines were
silently doing The Wrong Thing (or The Acceptable Thing in The Wrong Order)
when presented with a non-definition.  Also cuts down on memory usage.

llvm-svn: 95330
2010-02-04 22:26:26 +00:00
Ted Kremenek
545168268b Add a stop gap to Sema::CorrectTypo() to correct only up to 20 typos.
This is to address a serious performance problem observed when running
'clang -fsyntax-only' on really broken source files.  In one case,
repeatedly calling CorrectTypo() caused one source file to be rejected
after 2 minutes instead of 1 second.

This patch causes typo correction to take neglible time on that file
while still providing correction results for the first 20 cases.  I
felt this was a reasonable number for moderately broken source files.

I don't claim this is the best solution.  Comments welcome.  It is
necessary for us to address this issue because it is a serious
performance problem.

llvm-svn: 95049
2010-02-02 02:07:01 +00:00
Chandler Carruth
3a693b7428 Return early, reduce indentation, and simplify line breaks. No functionality
change.

PS: I'm under the impression formatting-only patches don't need pre-commit
review, but feel free to yell at me if I should post these first! =D

llvm-svn: 94956
2010-01-31 11:44:02 +00:00
John McCall
8fe6808de0 Handle redeclarations found by ADL deterministically and reasonably.
This solution relies on an O(n) scan of redeclarations, which means it might
scale poorly in crazy cases with tons of redeclarations brought in by a ton
of distinct associated namespaces.  I believe that avoiding this
is not worth the common-case cost.

llvm-svn: 94530
2010-01-26 07:16:45 +00:00
John McCall
91f61fc921 Allow ADL to find functions imported by using decls. Leave wordy comment
about interaction between ADL and default arguments.  Shrug shoulders, commit.

llvm-svn: 94524
2010-01-26 06:04:06 +00:00
John McCall
4c4c1dfc2b Preserve access bits through overload resolution much better. Some
general refactoring in operator resolution.

llvm-svn: 94498
2010-01-26 03:27:55 +00:00
John McCall
553c0796ee Implement elementary access control.
llvm-svn: 94268
2010-01-23 00:46:32 +00:00
John McCall
401982f56c First pass at collecting access-specifier information along inheritance paths.
Triggers lots of assertions about missing access information;  fix them.

Will actually consume this information soon.

llvm-svn: 94038
2010-01-20 21:53:11 +00:00
John McCall
ad371258aa Give UnresolvedSet the ability to store access specifiers for each declaration.
Change LookupResult to use UnresolvedSet.  Also extract UnresolvedSet into its
own header and make it templated over an inline capacity.

llvm-svn: 93959
2010-01-20 00:46:10 +00:00
John McCall
7fe6e9c2f1 Make LookupResult::resolveKind() robust against NotFoundInCurrentInstantiation.
Fixes PR 6049.

llvm-svn: 93557
2010-01-15 21:27:01 +00:00
Douglas Gregor
d0d2ee0e4b When performing qualified name lookup into the current instantiation,
do not look into base classes if there are any dependent base
classes. Instead, note in the lookup result that we couldn't look into
any dependent bases. Use that new result kind to detect when this case
occurs, so that we can fall back to treating the type/value/etc. as a
member of an unknown specialization.

Fixes an issue where we were resolving lookup at template definition
time and then missing an ambiguity at template instantiation time.

llvm-svn: 93497
2010-01-15 01:44:47 +00:00
Douglas Gregor
09bbc651f4 Switch the remaining code completions over to LookupVisibleDecls,
after adding the ability to determine whether our lookup is a
base-class lookup. Eliminate CollectMemberLookupResults, since it is
no longer used (yay).

llvm-svn: 93428
2010-01-14 15:47:35 +00:00
Douglas Gregor
200c99dd1e Move code completion for qualified name lookup (foo::) to
LookupVisibleDecls. Also, a function does not hide another function.

llvm-svn: 93421
2010-01-14 03:35:48 +00:00
Douglas Gregor
0235c4243f Look through using declarations when determining whether one decl hides another
llvm-svn: 93378
2010-01-14 00:06:47 +00:00
Douglas Gregor
3c96a46fc3 Name lookup should know better than to look into a class before it's defined
llvm-svn: 93217
2010-01-12 01:17:50 +00:00
Douglas Gregor
88f3eb898a When performing name lookup into a scope, check that its entity is
non-NULL before looking at the entity itself.

llvm-svn: 93199
2010-01-11 22:40:45 +00:00
Douglas Gregor
ea0a0a9b3f Implement name lookup for conversion function template specializations
(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.

llvm-svn: 93162
2010-01-11 18:40:55 +00:00
Douglas Gregor
712dcfe921 Fix the search for visible declarations within a Scope to ensure that
we look into a Scope that corresponds to a compound statement whose
scope was combined with the scope of the function that owns it. This
improves typo correction in many common cases.

llvm-svn: 92879
2010-01-07 00:31:29 +00:00
Ted Kremenek
e51136ee05 Per offline discussion with Doug, don't perform typo correction when we have encountered a fatal error. On some files that are woefully wrong (missing headers) this can cause a 3x slowdown in some cases when parsing the file. It makes sense not to perform typo correction in this case because after a fatal error diagnostics will either be suppressed or not really make any sense.
llvm-svn: 92809
2010-01-06 00:23:04 +00:00
Douglas Gregor
35b0bac8c5 Implement typo correction for a variety of Objective-C-specific
constructs:

  - Instance variable lookup ("foo->ivar" and, in instance methods, "ivar")
  - Property name lookup ("foo.prop")
  - Superclasses
  - Various places where a class name is required
  - Protocol names (e.g., id<proto>)

This seems to cover many of the common places where typos could occur.

llvm-svn: 92449
2010-01-03 18:01:57 +00:00
Douglas Gregor
4f2486353a Make sure that the search for visible declarations looks into the semantic parents of out-of-line function contexts
llvm-svn: 92397
2010-01-01 17:44:25 +00:00
Douglas Gregor
af2bd473d2 Typo correction for member access into classes/structs/unions, e.g.,
s.fnd("hello")

llvm-svn: 92345
2009-12-31 07:42:17 +00:00
Douglas Gregor
598b08f818 Implement typo correction for id-expressions, e.g.,
typo.cpp:22:10: error: use of undeclared identifier 'radious'; did
      you mean 'radius'?
  return radious * pi;
         ^~~~~~~
         radius

This was super-easy, since we already had decent recovery by looking
for names in dependent base classes.

llvm-svn: 92341
2009-12-31 05:20:13 +00:00
Douglas Gregor
2d435306e5 Typo correction for type names when they appear in declarations, e.g., given
tring str2;

we produce the following diagnostic + fix-it:

typo.cpp:15:1: error: unknown type name 'tring'; did you mean 'string'?
  tring str2;
  ^~~~~
  string


To make this really useful, we'll need to introduce typo correction in
many more places (wherever we do name lookup), and implement
declaration-vs-expression heuristics that cope with typos
better. However, for now this will handle the simple cases where we
already get good "unknown type name" diagnostics.

The LookupVisibleDecls functions are intended to be used by code
completion as well as typo correction; that refactoring will happen
later.

llvm-svn: 92308
2009-12-30 17:04:44 +00:00
Chandler Carruth
c25c6ee3db Handle using declarations in overloaded and template functions during ADL and
address resolution. This fixes PR5751.

Also, while we're here, remove logic from ADL which mistakenly included the
definition namespaces of overloaded and/or templated functions whose name or
address is used as an argument.

llvm-svn: 92245
2009-12-29 06:17:27 +00:00
John McCall
c3f09ad253 Look through using decls when checking whether a name is an acceptable
nested-name specifier name.

I accidentally checked in the test case for this in the last commit ---
fortunately, that refactor was inspired by having debugged this problem already,
so I can fix the bug quick (though probably not fast enough for the buildbots).

llvm-svn: 91677
2009-12-18 10:48:10 +00:00
John McCall
ea305edd63 Pull Sema::isAcceptableLookupResult into SemaLookup. Extract the criteria into
different functions and pick the function at lookup initialization time.
In theory we could actually divide the criteria functions into N different
functions for the N cases, but it's so not worth it.

Among other things, lets us invoke LookupQualifiedName without recomputing
IDNS info every time.

Do some refactoring in SemaDecl to avoid an awkward special case in LQN
that was only necessary for redeclaration testing for anonymous structs/unions ---
which could be done more efficiently with a scoped lookup anyway.

llvm-svn: 91676
2009-12-18 10:40:03 +00:00
Jeffrey Yasskin
1615d45daa Un-namespace-qualify llvm_unreachable. It's a macro, so the qualification gave
no extra safety anyway.

llvm-svn: 91207
2009-12-12 05:05:38 +00:00
Fariborz Jahanian
73fab4f3f4 Patch to fix a crash trying to access a category name in
objective-c++ mode and also removed dead-code in this area.
(fixes radar 7456710).

llvm-svn: 91081
2009-12-11 00:26:36 +00:00
John McCall
84d8767c15 Implement redeclaration checking and hiding semantics for using declarations. There
are a couple of O(n^2) operations in this, some analogous to the usual O(n^2)
redeclaration problem and some not.  In particular, retroactively removing
shadow declarations when they're hidden by later decls is pretty unfortunate.
I'm not yet convinced it's worse than the alternative, though.

llvm-svn: 91045
2009-12-10 09:41:52 +00:00
Douglas Gregor
a64c1e5452 When performing unqualified name lookup in C++, don't look directly
into transparent contexts; instead, we'll look into their nearest
enclosing non-transparent contexts further up the stack. Fixes PR5479.

llvm-svn: 90859
2009-12-08 15:38:36 +00:00
John McCall
800538253d Stop stripping UnresolvedUsingDecls out of LookupResults that have other
results in them (which we were doing intentionally as a stopgap).  Fix
an DeclContext lookup-table ordering problem which was causing UsingDecls to
show up incorrectly when looking for ordinary results.  And oh hey
Clang-Code-Syntax passes now.

llvm-svn: 90367
2009-12-03 00:58:24 +00:00
John McCall
67c0087074 Rip out the last remaining implicit use of OverloadedFunctionDecl in Sema:
LookupResult::getAsSingleDecl() is no more.  Shift Sema::LookupSingleName to
return null on overloaded results.

llvm-svn: 90309
2009-12-02 08:25:40 +00:00
John McCall
e66edc18ae Rip out TemplateIdRefExpr and make UnresolvedLookupExpr and
DependentScopeDeclRefExpr support storing templateids.  Unite the common   
code paths between ActOnDeclarationNameExpr and ActOnTemplateIdExpr.

This gets us to a point where we don't need to store function templates in
the AST using TemplateNames, which is critical to ripping out OverloadedFunction.

Also resolves a few FIXMEs.

llvm-svn: 89785
2009-11-24 19:00:30 +00:00
John McCall
283b901cf3 Consider a FunctionTemplate to be an overload all on its lonesome. Track
this information through lookup rather than rederiving it.

llvm-svn: 89570
2009-11-22 00:44:51 +00:00
John McCall
d14a86427f "Incremental" progress on using expressions, by which I mean totally ripping
into pretty much everything about overload resolution in order to wean
BuildDeclarationNameExpr off LookupResult::getAsSingleDecl().  Replace  
UnresolvedFunctionNameExpr with UnresolvedLookupExpr, which generalizes the
idea of a non-member lookup that we haven't totally resolved yet, whether by
overloading, argument-dependent lookup, or (eventually) the presence of   
a function template in the lookup results.  

Incidentally fixes a problem with argument-dependent lookup where we were 
still performing ADL even when the lookup results contained something from
a block scope.  

Incidentally improves a diagnostic when using an ObjC ivar from a class method.
This just fell out from rewriting BuildDeclarationNameExpr's interaction with
lookup, and I'm too apathetic to break it out.

The only remaining uses of OverloadedFunctionDecl that I know of are in
TemplateName and MemberExpr.

llvm-svn: 89544
2009-11-21 08:51:07 +00:00
John McCall
1f82f2462d Overhaul previous-declaration and overload checking to work on lookup results
rather than NamedDecl*.  This is a major step towards eliminating
OverloadedFunctionDecl.

llvm-svn: 89263
2009-11-18 22:49:29 +00:00
John McCall
5cebab12d5 Split LookupResult into its own header.
llvm-svn: 89199
2009-11-18 07:57:50 +00:00
John McCall
e61f2ba7e4 Incremental progress on using declarations. Split UnresolvedUsingDecl into
two classes, one for typenames and one for values;  this seems to have some
support from Doug if not necessarily from the extremely-vague-on-this-point
standard.  Track the location of the 'typename' keyword in a using-typename
decl.  Make a new lookup result for unresolved values and deal with it in
most places.

llvm-svn: 89184
2009-11-18 02:36:19 +00:00
John McCall
afcee245cd Temporarily unbreak the clang-on-llvm tests. :) Not going to fix unresolved
lookup all in a night.

llvm-svn: 89089
2009-11-17 10:36:41 +00:00
John McCall
f0f1cf087e Store "sugared" decls in LookupResults (i.e. decl aliases like using declarations);
strip the sugar off in getFoundDecl() and getAsSingleDecl(), but leave it on for
clients like overload resolution who want to use the iterators.

Refactor a few pieces of overload resolution to strip off using declarations in
a single place.  Don't do anything useful with the extra context knowledge yet.

llvm-svn: 89061
2009-11-17 07:50:12 +00:00
John McCall
3f746828d7 Instead of hanging a using declaration's target decls directly off the using
decl, create shadow declarations and put them in scope like normal.
Work in progress.

llvm-svn: 89048
2009-11-17 05:59:44 +00:00
John McCall
27b18f8144 Carry lookup configuration throughout lookup on the LookupResult. Give
LookupResult RAII powers to diagnose ambiguity in the results.  Other diagnostics
(e.g. access control and deprecation) will be moved to automatically trigger
during lookup as part of this same mechanism.

This abstraction makes it much easier to encapsulate aliasing declarations
(e.g. using declarations) inside the lookup system:  eventually, lookup will
just produce the aliases in the LookupResult, and the standard access methods
will naturally strip the aliases off.

llvm-svn: 89027
2009-11-17 02:14:36 +00:00
Douglas Gregor
1b8fe5b716 First part of changes to eliminate problems with cv-qualifiers and
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)

llvm-svn: 88969
2009-11-16 21:35:15 +00:00
Douglas Gregor
9167f8bbd5 Introduce a new representation for template template
parameters. Rather than storing them as either declarations (for the
non-dependent case) or expressions (for the dependent case), we now
(always) store them as TemplateNames. 

The primary change here is to add a new kind of TemplateArgument,
which stores a TemplateName. However, making that change ripples to
every switch on a TemplateArgument's kind, also affecting
TemplateArgumentLocInfo/TemplateArgumentLoc, default template
arguments for template template parameters, type-checking of template
template arguments, etc.

This change is light on testing. It should fix several pre-existing
problems with template template parameters, such as:
  - the inability to use dependent template names as template template
  arguments
  - template template parameter default arguments cannot be
  instantiation

However, there are enough pieces missing that more implementation is
required before we can adequately test template template parameters. 

llvm-svn: 86777
2009-11-11 01:00:40 +00:00
John McCall
caef2448da Create a new Scope when parsing a declaration with a C++ scope specifier.
llvm-svn: 86764
2009-11-11 00:21:18 +00:00
John McCall
b8be78b753 Fix a similar problem with qualified lookup through using directives,
although in this case we probably just run a risk of duplicating work;
I can't think of how this could cause a bug.

llvm-svn: 86680
2009-11-10 09:25:37 +00:00
John McCall
9757d0363d Make a somewhat more convincing test case for unqualified lookup through
using directives, and fix a bug thereby exposed:  since we're playing
tricks with pointers, we need to make certain we're always using the same 
pointers for things.
Also tweak an existing error message.

llvm-svn: 86679
2009-11-10 09:20:04 +00:00
John McCall
f6c8a4ef1f Fix unqualified lookup through using directives.
This is a pretty minimal test case;  I'll make a better one later.

llvm-svn: 86669
2009-11-10 07:01:13 +00:00
Sebastian Redl
c45c03c9dd Ignore dependent bases in ADL. Fixes PR5271.
llvm-svn: 85054
2009-10-25 09:35:33 +00:00
Sebastian Redl
c057f423a0 Apply the special enum restrictions from [over.match.oper]p3b2 in argument-dependent lookup too. This fixes PR5244.
llvm-svn: 84963
2009-10-23 19:23:15 +00:00
John McCall
6538c93050 Qualified lookup through using declarations. Diagnose a new type of ambiguity.
Split the various ambiguous result enumerators into their own enum.  Tests
for most of C++ [namespace.qual].

llvm-svn: 83700
2009-10-10 05:48:19 +00:00
Douglas Gregor
b385b7c62e Dead Code Elimination
llvm-svn: 83686
2009-10-09 22:56:12 +00:00
John McCall
9f3059a192 Refactor the LookupResult API to simplify most common operations. Require users to
pass a LookupResult reference to lookup routines.  Call out uses which assume a single
result.

llvm-svn: 83674
2009-10-09 21:13:30 +00:00
John McCall
fe8dc76f80 Dead code elimination.
llvm-svn: 83492
2009-10-07 22:04:40 +00:00
Douglas Gregor
36d1b14dde Refactor the code that walks a C++ inheritance hierarchy, searching
for bases, members, overridden virtual methods, etc. The operations
isDerivedFrom and lookupInBases are now provided by CXXRecordDecl,
rather than by Sema, so that CodeGen and other clients can use them
directly.

llvm-svn: 83396
2009-10-06 17:59:45 +00:00
John McCall
9dd450bb78 Change all the Type::getAsFoo() methods to specializations of Type::getAs().
Several of the existing methods were identical to their respective
specializations, and so have been removed entirely.  Several more 'leaf'
optimizations were introduced.

The getAsFoo() methods which imposed extra conditions, like
getAsObjCInterfacePointerType(), have been left in place.

llvm-svn: 82501
2009-09-21 23:43:11 +00:00
Douglas Gregor
cc2427c343 When performing name lookup within a class template or class template
partial specialization, make sure we look into non-dependent base
classes (but not dependent base classes). Fixes PR4951.

llvm-svn: 81584
2009-09-11 22:57:37 +00:00
Douglas Gregor
7f737c0015 When performing unqualified name lookup into a DeclContext, also look into
all of the parent DeclContexts that aren't represented within the
Scope chain. This fixes some name-lookup problems in out-of-line
definitions of members of nested classes.

llvm-svn: 81451
2009-09-10 16:57:35 +00:00
Mike Stump
11289f4280 Remove tabs, and whitespace cleanups.
llvm-svn: 81346
2009-09-09 15:08:12 +00:00
Douglas Gregor
b7bfe79412 Rewrite of our handling of name lookup in C++ member access expressions, e.g.,
x->Base::f

We no longer try to "enter" the context of the type that "x" points
to. Instead, we drag that object type through the parser and pass it
into the Sema routines that need to know how to perform lookup within
member access expressions.

We now implement most of the crazy name lookup rules in C++
[basic.lookup.classref] for non-templated code, including performing
lookup both in the context of the type referred to by the member
access and in the scope of the member access itself and then detecting
ambiguities when the two lookups collide (p1 and p4; p3 and p7 are
still TODO). This change also corrects our handling of name lookup
within template arguments of template-ids inside the
nested-name-specifier (p6; we used to look into the scope of the
object expression for them) and fixes PR4703.

I have disabled some tests that involve member access expressions
where the object expression has dependent type, because we don't yet
have the ability to describe dependent nested-name-specifiers starting
with an identifier.

llvm-svn: 80843
2009-09-02 22:59:36 +00:00
John McCall
aa74a0c3b5 Omnibus friend decl refactoring. Instead of cloning AST classes for friend
declarations of same, introduce a single AST class and add appropriate bits
(encoded in the namespace) for whether a decl is "real" or not.  Much hackery
about previously-declared / not-previously-declared, but it's essentially
mandated by the standard that friends alter lookup, and this is at least
fairly non-intrusive.

Refactor the Sema methods specific to friends for cleaner flow and less nesting.

Incidentally solve a few bugs, but I remain confident that we can put them back.

llvm-svn: 80353
2009-08-28 07:59:38 +00:00
Douglas Gregor
e861bac059 Improve support for out-of-line definitions of nested templates and
their members, including member class template, member function
templates, and member classes and functions of member templates.

To actually parse the nested-name-specifiers that qualify the name of
an out-of-line definition of a member template, e.g.,

  template<typename X> template<typename Y>
  X Outer<X>::Inner1<Y>::foo(Y) {
    return X();
  }

we need to look for the template names (e.g., "Inner1") as a member of
the current instantiation (Outer<X>), even before we have entered the
scope of the current instantiation. Since we can't do this in general
(i.e., we should not be looking into all dependent
nested-name-specifiers as if they were the current instantiation), we
rely on the parser to tell us when it is parsing a declaration
specifier sequence, and, therefore, when we should consider the
current scope specifier to be a current instantiation.

Printing of complicated, dependent nested-name-specifiers may be
somewhat broken by this commit; I'll add tests for this issue and fix
the problem (if it still exists) in a subsequent commit.

llvm-svn: 80044
2009-08-25 22:51:20 +00:00
Douglas Gregor
f2270430a1 Skip transparent contexts when performing C++ name lookup
llvm-svn: 79931
2009-08-24 18:55:03 +00:00
John McCall
d1e9d835f3 Argument-dependent lookup for friend declarations. Add a new decl type,
FriendFunctionDecl, and create instances as appropriate.

The design of FriendFunctionDecl is still somewhat up in the air;  you can
befriend arbitrary types of functions --- methods, constructors, etc. ---
and it's not clear that this representation captures that very well.
We'll have a better picture when we start consuming this data in access
control.

llvm-svn: 78653
2009-08-11 06:59:38 +00:00
John McCall
c7e8e795fa Just add global scope to the associated namespaces set instead of tracking it
separately.  Add the framework (currently unfed) for finding friend declarations
during argument-dependent lookup.

llvm-svn: 78414
2009-08-07 22:18:02 +00:00
John McCall
07e91c04ba First pass at friend semantics.
llvm-svn: 78274
2009-08-06 02:15:43 +00:00
Eli Friedman
44b83eea30 Get rid of "smart" quotes. Per report on cfe-dev.
llvm-svn: 78230
2009-08-05 19:21:58 +00:00
Ted Kremenek
c23c7e6a51 Change uses of:
Type::getAsReferenceType() -> Type::getAs<ReferenceType>()
  Type::getAsRecordType() -> Type::getAs<RecordType>()
  Type::getAsPointerType() -> Type::getAs<PointerType>()
  Type::getAsBlockPointerType() -> Type::getAs<BlockPointerType>()
  Type::getAsLValueReferenceType() -> Type::getAs<LValueReferenceType>()
  Type::getAsRValueReferenceType() -> Type::getAs<RValueReferenceType>()
  Type::getAsMemberPointerType() -> Type::getAs<MemberPointerType>()
  Type::getAsReferenceType() -> Type::getAs<ReferenceType>()
  Type::getAsTagType() -> Type::getAs<TagType>()
  
And remove Type::getAsReferenceType(), etc.

This change is similar to one I made a couple weeks ago, but that was partly
reverted pending some additional design discussion. With Doug's pending smart
pointer changes for Types, it seemed natural to take this approach.

llvm-svn: 77510
2009-07-29 21:53:49 +00:00
Douglas Gregor
aa87ebc0c1 [llvm up]
A template name can refer to a set of overloaded function
templates. Model this in TemplateName, which can now refer to an
OverloadedFunctionDecl that contains function templates. This removes
an unspeakable hack in Sema::isTemplateName.

llvm-svn: 77488
2009-07-29 18:26:50 +00:00
Argyrios Kyrtzidis
43cee935ae Remove Sema::LookupObjCImplementation and replace it with just calling ObjCInterfaceDecl::getImplementation().
llvm-svn: 76509
2009-07-21 00:06:04 +00:00
Argyrios Kyrtzidis
6b7e376160 Remove ASTContext::getCanonicalDecl() and use Decl::getCanonicalDecl in its place.
llvm-svn: 76274
2009-07-18 00:34:25 +00:00
Ted Kremenek
8a286fbdb9 Per offline discussion with Steve Naroff, add back Type::getAsXXXType() methods
until Doug Gregor's Type smart pointer code lands (or more discussion occurs).
These methods just call the new Type::getAs<XXX> methods, so we still have
reduced implementation redundancy. Having explicit getAsXXXType() methods makes
it easier to set breakpoints in the debugger.

llvm-svn: 76193
2009-07-17 17:50:17 +00:00
Ted Kremenek
b825c0ddc5 Replaced Type::getAsLValueReferenceType(), Type::getAsRValueReferenceType(), Type::getAsMemberPointerType(), Type::getAsTagType(), and Type::getAsRecordType() with their Type::getAs<XXX> equivalents.
llvm-svn: 76139
2009-07-17 01:20:38 +00:00
Ted Kremenek
e3fb4b6524 Add member template 'Type::getAs<T>', which converts a Type* to a respective T*.
This method is intended to eventually replace the individual
Type::getAsXXXType<> methods.

The motivation behind this change is twofold:

1) Reduce redundant implementations of Type::getAsXXXType() methods. Most of
them are basically copy-and-paste.

2) By centralizing the implementation of the getAs<Type> logic we can more
smoothly move over to Doug Gregor's proposed canonical type smart pointer
scheme.

Along with this patch:

a) Removed 'Type::getAsPointerType()'; now clients use getAs<PointerType>.
b) Removed 'Type::getAsBlockPointerTypE()'; now clients use getAs<BlockPointerType>.

llvm-svn: 76098
2009-07-16 19:58:26 +00:00
Douglas Gregor
be759256b9 Fix a corner case with argument-dependent lookup and overloaded function sets.
llvm-svn: 74999
2009-07-08 10:57:20 +00:00
Douglas Gregor
197e5f7bb7 Improve argument-dependent lookup to find associated classes and
namespaces based on the template arguments of a class template
specialization type.

llvm-svn: 74993
2009-07-08 07:51:57 +00:00
Argyrios Kyrtzidis
cfbfe78e9e De-ASTContext-ify DeclContext.
Remove ASTContext parameter from DeclContext's methods. This change cascaded down to other Decl's methods and changes to call sites started "escalating".
Timings using pre-tokenized "cocoa.h" showed only a ~1% increase in time run between and after this commit.

llvm-svn: 74506
2009-06-30 02:36:12 +00:00
Argyrios Kyrtzidis
b4b64ca752 Remove the ASTContext parameter from the attribute-related methods of Decl.
The implementations of these methods can Use Decl::getASTContext() to get the ASTContext.

This commit touches a lot of files since call sites for these methods are everywhere.
I used pre-tokenized "carbon.h" and "cocoa.h" headers to do some timings, and there was no real time difference between before the commit and after it.

llvm-svn: 74501
2009-06-30 02:34:44 +00:00
Douglas Gregor
15448f8d23 Improve support for overloaded operator templates.
llvm-svn: 74390
2009-06-27 21:05:07 +00:00
Anders Carlsson
6915bf6158 Add NamedDecl::getUnderlyingDecl that can see through UsingDecl and ObjCCompatibleAliasDecl.
llvm-svn: 74279
2009-06-26 06:29:23 +00:00
Anders Carlsson
f057cb2310 See through UsingDecls in more places.
llvm-svn: 74269
2009-06-26 05:26:50 +00:00
Anders Carlsson
288dcd1158 Fix failing test.
llvm-svn: 74268
2009-06-26 05:14:36 +00:00
Anders Carlsson
5f212cbb73 Fix another assert related to using decls.
llvm-svn: 74262
2009-06-26 03:54:13 +00:00
Anders Carlsson
8d0f6b7c87 When creating LookupResults, see through UsingDecls. Fixes PR4450.
llvm-svn: 74258
2009-06-26 03:37:05 +00:00