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2009-11-15When looking for operator() to type-check a call to an object of classDouglas Gregor
type, use full qualified name lookup rather than the poking the declaration context directly. This makes sure that we see operator()'s in superclasses. Also, move the complete-type check before this name lookup. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88842 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-05When collecting types for built-in candidates, make arrays decay to ↵Sebastian Redl
pointers. Otherwise, subscripting an array leads to no candidates at all. Fixes PR5360. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86140 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23Apply the special enum restrictions from [over.match.oper]p3b2 in ↵Sebastian Redl
argument-dependent lookup too. This fixes PR5244. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84963 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-22When building types from declarators, instead of building two types (one forJohn McCall
the DeclaratorInfo, one for semantic analysis), just build a single type whose canonical type will reflect the semantic analysis (assuming the type is well-formed, of course). To make that work, make a few changes to the type system: * allow the nominal pointee type of a reference type to be a (possibly sugared) reference type. Also, preserve the original spelling of the reference type. Both of these can be ignored on canonical reference types. * Remove ObjCProtocolListType and preserve the associated source information on the various ObjC TypeLocs. Preserve the spelling of protocol lists except in the canonical form. * Preserve some level of source type structure on parameter types, but canonicalize on the canonical function type. This is still a WIP. Drops code size, makes strides towards accurate source location representation, slight (~1.7%) progression on Cocoa.h because of complexity drop. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84907 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30When overload resolution fails for an overloaded operator, show theDouglas Gregor
overload candidates (but not the built-in ones). We still rely on the underlying built-in semantic analysis to produce the initial diagnostic, then print the candidates following that diagnostic. One side advantage of this approach is that we can perform more validation of C++'s operator overloading with built-in candidates vs. the semantic analysis for those built-in operators: when there are no viable candidates, we know to expect an error from the built-in operator handling code. Otherwise, we are not modeling the built-in semantics properly within operator overloading. This is checked as: assert(Result.isInvalid() && "C++ binary operator overloading is missing candidates!"); if (Result.isInvalid()) PrintOverloadCandidates(CandidateSet, /*OnlyViable=*/false); The assert() catches cases where we're wrong in a +Asserts build. The "if" makes sure that, if this happens in a production clang (-Asserts), we still build the proper built-in operator and continue on our merry way. This is effectively what happened before this change, but we've added the assert() to catch more flies. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83175 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30Note location of operators caused the circularity.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83153 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30Detect operator-> chains of arbitrary length. Use a terrible data structureJohn McCall
to strike fear into the hearts of CPUs everywhere. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83133 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30self-referecing operator '->' member function was causingFariborz Jahanian
infinit recursion. This patch fixes it. [13.3.1.2]-p2 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83124 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-2913.1-p3 Overloadable declarationsFariborz Jahanian
Parameter declarations that differ only in the presence or absence of const and/or volatile are equivalent. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83104 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27When looking for overloaded member operators, make sure to instantiateDouglas Gregor
class template specializations (when possible) and look into base classes. Thanks to Eli for the test case! FIXME -=1. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80302 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-29Create a new PrintingPolicy class, which we pass down through the ASTDouglas Gregor
printing logic to help customize the output. For now, we use this rather than a special flag to suppress the "struct" when printing "struct X" and to print the Boolean type as "bool" in C++ but "_Bool" in C. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72590 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-24Rename clang to clang-cc.Daniel Dunbar
Tests and drivers updated, still need to shuffle dirs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67602 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-16Almost complete implementation of rvalue references. One bug, and a few ↵Sebastian Redl
unclear areas. Maybe Doug can shed some light on some of the fixmes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67059 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04Bring operator name lookup (as required for C++ operator overloading)Douglas Gregor
into the general name-lookup fold. This cleans up some ugly, not-quite-working code in the handling of operator overloading. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63735 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04Initial implementation of argument dependent lookup (a.k.a. ADL,Douglas Gregor
a.k.a. Koenig lookup) in C++. Most of the pieces are in place, but for two: - In an unqualified call g(x), even if the name does not refer to anything in the current scope, we can still find functions named "g" based on ADL. We don't yet have this ability. - ADL will need updating for friend functions and templates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63692 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-13Fix argument-passing bugs in a call to objectDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62147 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-13Make sure we don't name a constructor or destructor with a qualifiedDouglas Gregor
type. It leads to very weird errors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62124 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22Implement a %plural modifier for complex plural forms in diagnostics. Use it ↵Sebastian Redl
in the overload diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59871 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21Fix overloading of non-static member functions that differ in their ↵Douglas Gregor
cv-qualifiers git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59819 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21Don't print canonical types in overloading-related diagnosticsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59789 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20Add support for overloaded operator-> when used in a member accessDouglas Gregor
expression (smart_ptr->mem). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59732 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Beef up the test for function call operators slightlyDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59675 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Implement the rest of C++ [over.call.object], which permits the objectDouglas Gregor
being called to be converted to a reference-to-function, pointer-to-function, or reference-to-pointer-to-function. This is done through "surrogate" candidate functions that model the conversions from the object to the function (reference/pointer) and the conversions in the arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59674 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Support for calling overloaded function call operators (operator())Douglas Gregor
with function call syntax, e.g., Functor f; f(x, y); This is the easy part of handling calls to objects of class type (C++ [over.call.object]). The hard part (coping with conversions from f to function pointer or reference types) will come later. Nobody uses that stuff anyway, right? :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59663 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Support overloading of the subscript operator[], including support forDouglas Gregor
built-in operator candidates. Test overloading of '&' and ','. In C++, a comma expression is an lvalue if its right-hand subexpression is an lvalue. Update Expr::isLvalue accordingly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59643 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Added operator overloading for unary operators, post-increment, andDouglas Gregor
post-decrement, including support for generating all of the built-in operator candidates for these operators. C++ and C have different rules for the arguments to the builtin unary '+' and '-'. Implemented both variants in Sema::ActOnUnaryOp. In C++, pre-increment and pre-decrement return lvalues. Update Expr::isLvalue accordingly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59638 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Built-in equality and relational operators have return type "bool" in C++,Douglas Gregor
not "int". Fix a typo in the promotion of enumeration types that was causing some integral promotions to look like integral conversions (leading to extra ambiguities in overload resolution). Check for "acceptable" overloaded operators based on the types of the arguments. This is a somewhat odd check that is specified by the standard, but I can't see why it actually matters: the overload candidates it suppresses don't seem like they would ever be picked as the best candidates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59583 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18Partial expansion of C++ operator overloading (for binary operators)Douglas Gregor
to support operators defined as member functions, e.g., struct X { bool operator==(X&); }; Overloading with non-member operators is supported, and the special rules for the implicit object parameter (e.g., the ability for a non-const *this to bind to an rvalue) are implemented. This change also refactors and generalizes the code for adding overload candidates for overloaded operator calls (C++ [over.match.expr]), both to match the rules more exactly (name lookup of non-member operators actually ignores member operators) and to make this routine more reusable for the other overloaded operators. Testing for the initialization of the implicit object parameter is very light. More tests will come when we get support for calling member functions directly (e.g., o.m(a1, a2)). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59564 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06Initial, rudimentary implementation of operator overloading for binaryDouglas Gregor
operators. For example, one can now write "x + y" where x or y is a class or enumeration type, and Clang will perform overload resolution for "+" based on the overloaded operators it finds. The other kinds of overloadable operators in C++ will follow this same approach. Three major issues remain: 1) We don't find member operators 2) Since we don't have user-defined conversion operators, we can't call any of the built-in overloaded operators in C++ [over.built]. 3) Once we've done the semantic checks, we drop the overloaded operator on the floor; it doesn't get into the AST at all. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58821 91177308-0d34-0410-b5e6-96231b3b80d8