aboutsummaryrefslogtreecommitdiff
path: root/lib/Sema/SemaExpr.cpp
AgeCommit message (Collapse)Author
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
2008-11-19stop calling II::getName() unnecesarily in semaChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59609 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19remove one more old-style Diag method.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59589 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Switch several more Sema Diag methods over. This simplifies theChris Lattner
__builtin_prefetch code to only emit one diagnostic per builtin_prefetch. While this has nothing to do with the rest of the patch, the code seemed like overkill when I was updating it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59588 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
2008-11-18start converting Sema over to using its canonical Diag method.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59561 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18As threatened previously: consolidate name lookup and the creation ofDouglas Gregor
DeclRefExprs and BlockDeclRefExprs into a single function Sema::ActOnDeclarationNameExpr, eliminating a bunch of duplicate lookup-name-and-check-the-result code. Note that we still have the three parser entry points for identifiers, operator-function-ids, and conversion-function-ids, since the parser doesn't (and shouldn't) know about DeclarationNames. This is a Good Thing (TM), and there will be more entrypoints coming (e.g., for C++ pseudo-destructor expressions). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59527 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18Extend DeclarationName to support C++ overloaded operators, e.g.,Douglas Gregor
operator+, directly, using the same mechanism as all other special names. Removed the "special" identifiers for the overloaded operators from the identifier table and IdentifierInfo data structure. IdentifierInfo is back to representing only real identifiers. Added a new Action, ActOnOperatorFunctionIdExpr, that builds an expression from an parsed operator-function-id (e.g., "operator +"). ActOnIdentifierExpr used to do this job, but operator-function-ids are no longer represented by IdentifierInfo's. Extended Declarator to store overloaded operator names. Sema::GetNameForDeclarator now knows how to turn the operator name into a DeclarationName for the overloaded operator. Except for (perhaps) consolidating the functionality of ActOnIdentifier, ActOnOperatorFunctionIdExpr, and ActOnConversionFunctionExpr into a common routine that builds an appropriate DeclRefExpr by looking up a DeclarationName, all of the work on normalizing declaration names should be complete with this commit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59526 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18minor cleanups and tidying, no functionality change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59485 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18implement a fixme by making warnings for ++/-- on non-modifiable-lvalues better.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18factor some code out into a helper functionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59483 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-17Implement effects of 'mutable', and a few comments from Chris on its parsing.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59470 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-17Implement rdar://6319320: give a good diagnostic for cases where peopleChris Lattner
are trying to use the old GCC "casts as lvalue" extension. We don't and will hopefully never support this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59460 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-17Fix <rdar://problem/6316324> [sema] spurious warning on comparison of ↵Steve Naroff
qualified id. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59459 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-14Add a new expression node, CXXOperatorCallExpr, which expresses aDouglas Gregor
function call created in response to the use of operator syntax that resolves to an overloaded operator in C++, e.g., "str1 + str2" that resolves to std::operator+(str1, str2)". We now build a CXXOperatorCallExpr in C++ when we pick an overloaded operator. (But only for binary operators, where we actually implement overloading) I decided *not* to refactor the current CallExpr to make it abstract (with FunctionCallExpr and CXXOperatorCallExpr as derived classes). Doing so would allow us to make CXXOperatorCallExpr a little bit smaller, at the cost of making the argument and callee accessors virtual. We won't know if this is going to be a win until we can parse lots of C++ code to determine how much memory we'll save by making this change vs. the performance penalty due to the extra virtual calls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59306 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Some cleanup for the implementation of built-in operatorDouglas Gregor
candidates. Thanks to Chris for the review! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59260 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Implement support for operator overloading using candidate operatorDouglas Gregor
functions for built-in operators, e.g., the builtin bool operator==(int const*, int const*) can be used for the expression "x1 == x2" given: struct X { operator int const*(); } x1, x2; The scheme for handling these built-in operators is relatively simple: for each candidate required by the standard, create a special kind of candidate function for the built-in. If overload resolution picks the built-in operator, we perform the appropriate conversions on the arguments and then let the normal built-in operator take care of it. There may be some optimization opportunity left: if we can reduce the number of built-in operator overloads we generate, overload resolution for these cases will go faster. However, one must be careful when doing this: GCC generates too few operator overloads in our little test program, and fails to compile it because none of the overloads it generates match. Note that we only support operator overload for non-member binary operators at the moment. The other operators will follow. As part of this change, ImplicitCastExpr can now be an lvalue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59148 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Introduce a single AST node SizeOfAlignOfExpr for all sizeof and alignof ↵Sebastian Redl
expressions, both of values and types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59057 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10Basic support for taking the address of an overloaded functionDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59000 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08Implement Sema support for C++ nested-name-specifiers.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58916 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08Implement support for C++ nested-name-specifiers ('foo::bar::x') in the ↵Argyrios Kyrtzidis
Parser side. No Sema functionality change, just the signatures of the Action/Sema methods. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58913 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
2008-11-05Implement C++ copy-initialization for declarations. There is now someDouglas Gregor
duplication in the handling of copy-initialization by constructor, which occurs both for initialization of a declaration and for overloading. The initialization code is due for some refactoring. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58756 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04Add a new expression class, ObjCSuperExpr, to handle the Objective-C ↵Douglas Gregor
'super'. Remove ObjCThis from PredefinedExpr git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58698 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-03Fix <rdar://problem/6339636> clang ObjC rewriter: Assertion failed: FileID-1 ↵Steve Naroff
< FileIDs.size() && "Invalid FileID!", file c:\cygwin\home\Administrator\llvm\tools\clang\include\clang/Basic/SourceManager.h, line 513 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58654 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29Tweak Sema::CheckReferenceInit so that it (optionally) computes an Douglas Gregor
ImplicitConversionSequence and, when doing so, following the specific rules of [over.best.ics]. The computation of the implicit conversion sequences implements C++ [over.ics.ref], but we do not (yet) have ranking for implicit conversion sequences that use reference binding. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58357 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29Implement initialization of a reference (C++ [dcl.init.ref]) as partDouglas Gregor
of copy initialization. Other pieces of the puzzle: - Try/Perform-ImplicitConversion now handles implicit conversions that don't involve references. - Try/Perform-CopyInitialization uses CheckSingleAssignmentConstraints for C. PerformCopyInitialization is now used for all argument passing and returning values from a function. - Diagnose errors with declaring references and const values without an initializer. (Uses a new Action callback, ActOnUninitializedDecl). We do not yet have implicit conversion sequences for reference binding, which means that we don't have any overloading support for reference parameters yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58353 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28Rename ExplicitCCastExpr to CStyleCastExprDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58331 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28Improve our handling of (C++) references within Clang. Specifically:Douglas Gregor
- Do not allow expressions to ever have reference type - Extend Expr::isLvalue to handle more cases where having written a reference into the source implies that the expression is an lvalue (e.g., function calls, C++ casts). - Make GRExprEngine::VisitCall treat the call arguments as lvalues when they are being bound to a reference parameter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58306 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Refactor the expression class hierarchy for casts. Most importantly:Douglas Gregor
- CastExpr is the root of all casts - ImplicitCastExpr is (still) used for all explicit casts - ExplicitCastExpr is now the root of all *explicit* casts - ExplicitCCastExpr (new name needed!?) is a C-style cast in C or C++ - CXXFunctionalCastExpr inherits from ExplicitCastExpr - CXXNamedCastExpr inherits from ExplicitCastExpr and is the root of all of the C++ named cast expression types (static_cast, dynamic_cast, etc.) - Added classes CXXStaticCastExpr, CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr to Also, fixed returned-stack-addr.cpp, which broke once when we fixed reinterpret_cast to diagnose double->int* conversions and again when we eliminated implicit conversions to reference types. The fix is in both testcase and SemaChecking.cpp. Most of this patch is simply support for the renaming. There's very little actual change in semantics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Fix <rdar://problem/6315646> clang on xcode: error: invalid operands to ↵Steve Naroff
binary expression ('id<NSTableViewDelegate>' and 'XCExtendedArrayController *'). There is still a bug here (as the FIXME in the test case indicates). Prior to this patch, the bug would generate an error. Now, we simply do nothing (which is less harmful until we can get it right). The complete bug fix will require changing ASTContext::mergeTypes(), which I'd like to defer for now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58241 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-26Remember whether an initlist had a designator in the AST.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58218 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-26pass designators into sema. This completes parser-level designatorChris Lattner
support as far as I know. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58217 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-26Don't give a default argument to ASTContext::getFunctionType for the ↵Argyrios Kyrtzidis
TypeQuals parameter, it causes subtle bugs where TypeQuals, while necessary, are omitted from the call. -Remove the default argument. -Update all call sites of ASTContext::getFunctionType. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58187 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24-Add support for cv-qualifiers after function declarators.Argyrios Kyrtzidis
-Add withConst/withVolatile/withRestrict methods to QualType class, that return the QualType plus the respective qualifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58120 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24Semantic analysis for C++ reinterpret_cast and const_cast. Patch by ↵Douglas Gregor
Sebastian Redl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58094 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24First non-embarrassing cut at checking for ambiguous derived-to-base Douglas Gregor
conversions. Added PerformImplicitConversion, which follows an implicit conversion sequence computed by TryCopyInitialization and actually performs the implicit conversions, including the extra check for ambiguity mentioned above. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58071 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-23Fix regression in comparison of qualified id; == operator was beingDaniel Dunbar
created with LHS and RHS whose types didn't match. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58049 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22Fix <rdar://problem/6311947> clang on xcode (regression): error: use of ↵Steve Naroff
undeclared identifier 'expandedValue'. Mea culpa: I introduced this regresson in the following 2 commits: r57529 (10/14), r57841 (10/20). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58007 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22Now that DeclRefExpr accepts a NamedDecl, use a DeclRefExpr for when a ↵Argyrios Kyrtzidis
CXXFieldDecl is referenced inside a method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58000 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22Fix <rdar://problem/6257675> error: member reference base type ↵Steve Naroff
('NSUserDefaults *') is not a structure or union. Teach Sema::ActOnMemberReferenceExpr() to look through local category implementations associated with the class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22Move Sema::GetNonReferenceType to QualType::getNonReferenceType and make it ↵Douglas Gregor
inline git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57951 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Initial step toward supporting qualification conversions (C++ 4.4).Douglas Gregor
Changes: - Sema::IsQualificationConversion determines whether we have a qualification conversion. - Sema::CheckSingleAssignment constraints now follows the C++ rules in C++, performing an implicit conversion from the right-hand side to the type of the left-hand side rather than checking based on the C notion of "compatibility". We now rely on the implicit-conversion code to determine whether the conversion can happen or not. Sema::TryCopyInitialization has an ugly reference-related hack to cope with the initialization of references, for now. - When building DeclRefExprs, strip away the reference type, since there are no expressions whose type is a reference. We'll need to do this throughout Sema. - Expr::isLvalue now permits functions to be lvalues in C++ (but not in C). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57935 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Fix use of dyn_cast.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57927 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Preliminary support for function overloadingDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57909 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-20Fix <rdar://problem/6268365> Parser rejects property (dot notation) access ↵Steve Naroff
on id<protocol>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57850 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-20Sema::CheckCompareOperands() and ASTContext::mergeTypes(): Change handling ↵Steve Naroff
of ObjC qualified id types to be consistent with gcc. This changes a handful of test case errors into warnings (diff will tell you which cases have changed). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57841 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-20Fix rdar://6257721 by tightening up the block "snapshot" check, andChris Lattner
move it to its own predicate to make it more clear. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57796 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-09-24 17:55:44 +0000