Commit Graph

199 Commits

Author SHA1 Message Date
Douglas Gregor 56751b5981 Fix checking for a null pointer constant when the expression itself is
value-dependent. Audit (and fixed) all calls to
Expr::isNullPointerConstant() to provide the correct behavior with
value-dependent expressions. Fixes PR5041 and a crash in libstdc++
<locale>.

In the same vein, properly compute value- and type-dependence for
ChooseExpr. Fixes PR4996.

llvm-svn: 82748
2009-09-25 04:25:58 +00:00
Douglas Gregor 3a923c2d37 WIP implementation of explicit function template specialization. This
first implementation recognizes when a function declaration is an
explicit function template specialization (based on the presence of a
template<> header), performs template argument deduction + ambiguity
resolution to determine which template is being specialized, and hooks

There are many caveats here:
  - We completely and totally drop any explicitly-specified template
  arguments on the floor
  - We don't diagnose any of the extra semantic things that we should
  diagnose. 
  - I haven't looked to see that we're getting the right linkage for
  explicit specializations

On a happy note, this silences a bunch of errors that show up in
libstdc++'s <iostream>, although Clang still can't get through the
entire header.

llvm-svn: 82728
2009-09-24 23:14:47 +00:00
John McCall 8ccfcb51ee Refactor the representation of qualifiers to bring ExtQualType out of the
Type hierarchy.  Demote 'volatile' to extended-qualifier status.  Audit our
use of qualifiers and fix a few places that weren't dealing with qualifiers
quite right;  many more remain.

llvm-svn: 82705
2009-09-24 19:53:00 +00:00
Douglas Gregor c809cc2efa Improve diagnostic location information when checking the initialization of a reference
llvm-svn: 82666
2009-09-23 23:04:10 +00:00
Douglas Gregor 2a920014d3 When code-completion after a "," is building an overload set, note
that there is one more argument (the one following the comma) and make
the candidate non-viable if the function cannot accept any argument in
that position.

llvm-svn: 82625
2009-09-23 14:56:09 +00:00
Fariborz Jahanian 21ccf06352 Produce detailed diagnostics when overload
resolution failed to select a candidate due to
ambiguity in type conversion function selection.

llvm-svn: 82596
2009-09-23 00:58:07 +00:00
Fariborz Jahanian f0647a5fbc Code refactoring and cleanup.
llvm-svn: 82566
2009-09-22 20:24:30 +00:00
Fariborz Jahanian 0b51c729c9 Issue good ambiguity diagnostic when convesion fails.
llvm-svn: 82565
2009-09-22 19:53:15 +00:00
Douglas Gregor cabea40ea3 Implement code completion within a function call, triggered after the
opening parentheses and after each comma. We gather the set of visible
overloaded functions, perform "partial" overloading based on the set
of arguments that we have thus far, and return the still-viable
results sorted by the likelihood that they will be the best candidate.

Most of the changes in this patch are a refactoring of the overloading
routines for a function call, since we needed to separate out the
notion of building an overload set (common to code-completion and
normal semantic analysis) and then what to do with that overload
set. As part of this change, I've pushed explicit template arguments
into a few more subroutines.

There is still much more work to do in this area. Function templates
won't be handled well (unless we happen to deduce all of the template
arguments before we hit the completion point), nor will overloaded
function-call operators or calls to member functions.

llvm-svn: 82549
2009-09-22 15:41:20 +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 4fb9cde8ef When printing an overload candidate that is a function template specialization,
point at the template and print out its template arguments, e.g.,

ambiguous-ovl-print.cpp:5:8: note: candidate function template specialization
      [with T = int]
  void f(T*, long);

llvm-svn: 81907
2009-09-15 20:11:42 +00:00
Fariborz Jahanian 3e6b57e593 Issue good diagnostics when initialization failes due to
ambiguity in type conversion function selection.

llvm-svn: 81898
2009-09-15 19:12:21 +00:00
Fariborz Jahanian 19c7328881 Issue a good diagnostics when attempt to select
a type convesion function results in ambiguity.

llvm-svn: 81812
2009-09-15 00:10:11 +00:00
Douglas Gregor 6010da024c Implement partial ordering of function templates when calling a
conversion function.

llvm-svn: 81807
2009-09-14 23:02:14 +00:00
Douglas Gregor 48bc374d1e Test function template partial ordering when resolving the address of
an overloaded function (template).

llvm-svn: 81804
2009-09-14 22:02:01 +00:00
Fariborz Jahanian f4061e39a3 Used visible conversion function api to do overload
resolution of type conversion functions in base and
current class.

llvm-svn: 81784
2009-09-14 20:41:01 +00:00
Douglas Gregor 0ff7d92048 Implement partial ordering of function template specializations
(C++ [temp.func.order]). 

llvm-svn: 81777
2009-09-14 18:39:43 +00:00
Anders Carlsson 7ec8ccde01 Use the correct CastKind for derived-to-base pointer conversions.
llvm-svn: 81608
2009-09-12 04:46:44 +00:00
Fariborz Jahanian f9012a3e9d Undid my yesterday patch which is not needed with an upcoming patch.
llvm-svn: 81549
2009-09-11 18:46:22 +00:00
Anders Carlsson 78b5493994 Look for overloaded arrow operators in base classes.
llvm-svn: 81475
2009-09-10 23:18:36 +00:00
Fariborz Jahanian c571f790fc Patch to collect conversion methods in base(s) and derived
class into a candidate set. 

llvm-svn: 81467
2009-09-10 22:26:16 +00:00
Mike Stump 11289f4280 Remove tabs, and whitespace cleanups.
llvm-svn: 81346
2009-09-09 15:08:12 +00:00
Douglas Gregor 84f14dd674 Preliminary AST representation and semantic analysis for
explicitly-specified template argument lists in member reference
expressions, e.g.,

  x->f<int>()

llvm-svn: 80646
2009-09-01 00:37:14 +00:00
Anders Carlsson d20e795a5b Fix this for real.
llvm-svn: 80377
2009-08-28 16:57:08 +00:00
Anders Carlsson 759b78951e When doing overload resolution, expressions that are value dependent but not type dependent and of integral type should not be treated as null pointer constants.
llvm-svn: 80369
2009-08-28 15:55:56 +00:00
Anders Carlsson 228eea36a3 Pass InOverloadResolution all the way down to IsPointerConversion.
llvm-svn: 80368
2009-08-28 15:33:32 +00:00
Douglas Gregor 6a1f965853 When looking for overloaded member operators, make sure to instantiate
class template specializations (when possible) and look into base
classes. Thanks to Eli for the test case!

FIXME -=1.

llvm-svn: 80302
2009-08-27 23:35:55 +00:00
Anders Carlsson 20d1332d76 Add an InOverloadResolution flag to TryCopyInitialization.
llvm-svn: 80261
2009-08-27 17:37:39 +00:00
Anders Carlsson 271e3a4d47 Remove more default arguments.
llvm-svn: 80260
2009-08-27 17:30:43 +00:00
Anders Carlsson ef4c72135f Remove default arguments from TryImplicitConversion and fix a bug found in the process.
llvm-svn: 80258
2009-08-27 17:24:15 +00:00
Anders Carlsson 03068aa077 Remove default argument from TryCopyInitialization.
llvm-svn: 80256
2009-08-27 17:18:13 +00:00
Anders Carlsson 5ec4abf268 Revert the flags change for now, I have a better idea for this.
llvm-svn: 80255
2009-08-27 17:14:02 +00:00
Anders Carlsson 2f7e956f16 Add a OverloadResolutionFlags and start converting some of the overload methods over to using it instead of bools arguments.
llvm-svn: 80248
2009-08-27 16:01:18 +00:00
Anders Carlsson d624e16833 Bye-bye old RequireCompleteType.
llvm-svn: 80182
2009-08-26 23:45:07 +00:00
Douglas Gregor e9899d9769 Fix for overloaded binary operators whose operands need implicit
conversions, from Sylvere Teissier!

llvm-svn: 80112
2009-08-26 17:08:25 +00:00
Douglas Gregor 8a2e601917 Try to complete a type before looking for conversion functions within
that type. Note that we do not produce a diagnostic if the type is
incomplete; rather, we just don't look for conversion functions. Fixes PR4660.

llvm-svn: 79919
2009-08-24 15:23:48 +00:00
Douglas Gregor 84605aeac9 Refactor the template-instantiation logic for expressions into a
generic tree transformation (also used for recanonicalization) and a
small amount of template-instantiation-specific logic.

llvm-svn: 79917
2009-08-24 13:43:27 +00:00
Torok Edwin db7149246f Fix build of clang with gcc-4.4: #include <cstdio> was missing.
llvm-svn: 79916
2009-08-24 13:25:12 +00:00
Anders Carlsson d7923c6ed7 Add CK_NullToMemberPointer and CK_BaseToDerivedMemberPointer cast kinds. Make -ast-dump print out the cast kinds of cast expressions.
llvm-svn: 79787
2009-08-22 23:33:40 +00:00
Douglas Gregor 05155d8d7b Implement conversion function templates, along with the ability to use
template argument deduction from a conversion function (C++
[temp.deduct.conv]) with implicit conversions.

llvm-svn: 79693
2009-08-21 23:19:43 +00:00
Douglas Gregor 5ed5ae476e Introduce support for constructor templates, which can now be declared
and will participate in overload resolution. Unify the instantiation
of CXXMethodDecls and CXXConstructorDecls, which had already gotten
out-of-sync.

llvm-svn: 79658
2009-08-21 18:42:58 +00:00
Daniel Dunbar 6d886b056a gcc told me to add these.
llvm-svn: 79589
2009-08-21 02:43:05 +00:00
Douglas Gregor 97628d6a4c Implement support for calling member function templates, which involves:
- Allowing one to name a member function template within a class
  template and on the right-hand side of a member access expression.
  - Template argument deduction for calls to member function templates.
  - Registering specializations of member function templates (and
  finding them later).

llvm-svn: 79581
2009-08-21 00:16:32 +00:00
Eli Friedman 5ae98ee006 Make integer promotions work correctly on PIC16 and other platforms
where sizeof(short) == sizeof(int).  Move UsualArithmeticConversionsType 
out of Sema, since it was only there as a historical artifact.  Patch by 
Enea Zaffanella.

llvm-svn: 79412
2009-08-19 07:44:53 +00:00
Anders Carlsson e80ccac2cb Call MaybeBindToTemporary for overloaded binary and unary operators.
llvm-svn: 79173
2009-08-16 04:11:06 +00:00
Anders Carlsson 1c83debc36 Call MaybeBindToTemporary when constructing functino call operator calls.
llvm-svn: 79172
2009-08-16 03:53:54 +00:00
Anders Carlsson 8c84c206d9 Add MaybeBindToTemporary calls for member call expressions.
llvm-svn: 79171
2009-08-16 03:42:12 +00:00
Anders Carlsson bc4c107836 Move builtin call checking out into a separate function, make CheckFunctionCall and CheckBlockCall return bool instead. No intended functionality change.
llvm-svn: 79157
2009-08-16 01:56:34 +00:00
Anders Carlsson e827123f08 Make the CXXDefaultArgExpr constructor protected and add a static Create function.
llvm-svn: 79013
2009-08-14 18:30:22 +00:00
Anders Carlsson 4f4aab2aeb Use the correct cast kind as suggested by Doug.
llvm-svn: 78395
2009-08-07 18:45:49 +00:00