functions in C++, e.g.,
struct X {
operator bool() const;
};
Note that these conversions don't actually do anything, since we don't
yet have the ability to use them for implicit or explicit conversions.
llvm-svn: 58860
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.
llvm-svn: 58821
operators in C++. Overloaded operators can be called directly via
their operator-function-ids, e.g., "operator+(foo, bar)", but we don't
yet implement the semantics of operator overloading to handle, e.g.,
"foo + bar".
llvm-svn: 58817
Implicit declaration of destructors (when necessary).
Extended Declarator to store information about parsed constructors
and destructors; this will be extended to deal with declarators that
name overloaded operators (e.g., "operator +") and user-defined
conversion operators (e.g., "operator int").
llvm-svn: 58767
reference-collapsing.
Implement diagnostic for formation of a reference to cv void.
Drop cv-qualifiers added to a reference type when the reference type
comes from a typedef.
llvm-svn: 58612
etc more generic. For some targets, long may not be equal to pointer size. For
example: PIC16 has int as i16, ptr as i16 but long as i32.
Also fixed a few build warnings in assert() functions in CFRefCount.cpp,
CGDecl.cpp, SemaDeclCXX.cpp and ParseDeclCXX.cpp.
llvm-svn: 58501
Notes:
- Constructors are never found by name lookup, so they'll never get
pushed into any scope. Instead, they are stored as an
OverloadedFunctionDecl in CXXRecordDecl for easy overloading.
- There's a new action isCurrentClassName that determines whether an
identifier is the name of the innermost class currently being defined;
we use this to identify the declarator-id grammar rule that refers to
a type-name.
- MinimalAction does *not* support parsing constructors.
- We now handle virtual and explicit function specifiers.
llvm-svn: 58499
were being treated as type names for non-Objective-C files.
- Other lines are just because MinimalAction didn't have access to
the LangOptions.
llvm-svn: 58498
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.
llvm-svn: 58353
- 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.
llvm-svn: 58264
struct foo Y[10] = {
[4] .arr [2] 4 // expected-error {{expected '=' or another designator}}
};
because the "missing equals" extension only is valid if there
is exactly one array designator.
llvm-svn: 58215
1. It introduces new parser level abstractions for designators
that are used to communicate between parser and sema.
2. This fixes a FIXME where "identifier ':'" was considered to be
a designator even if it wasn't the first in a designator list.
3. In the "identifier ':'" case, it actually builds the designator
representation.
llvm-svn: 58205
1. Remove a bogus assertion, clients other than sema can return a
null pointer from actions that result in ParseTypeName returning null.
2. Remove dead RParenLoc variable.
3. Simplify control flow handling error conditions.
4. On a major failure, we should skip until ')' not until '}'.
llvm-svn: 57949
crash.m:8:12: error: type name requires a specifier or qualifier
@property (readonlyx, getter=isAwesome) int _awesome;
^
crash.m:8:29: error: expected ';' at end of declaration list
@property (readonlyx, getter=isAwesome) int _awesome;
^
crash.m:8:39: error: expected identifier or '('
@property (readonlyx, getter=isAwesome) int _awesome;
^
we now get:
crash.m:8:12: error: unknown property attribute 'readonlyx'
@property (readonlyx, getter=isAwesome) int _awesome;
^
Also, we can eliminate isObjCPropertyAttribute now.
llvm-svn: 57811
ParseObjCPropertyAttribute. Before, on this code (where
a comma was forgotten):
@property (readonly getter=isAwesome) int _awesome;
we emitted:
crash.m:9:11: error: expected ')'
@property (readonly getter=isAwesome) int _awesome;
^
crash.m:9:37: error: type name requires a specifier or qualifier
@property (readonly getter=isAwesome) int _awesome;
^
crash.m:9:37: error: expected identifier or '('
crash.m:9:37: error: expected ';' at end of declaration list
crash.m:9:1: error: @property requires fields to be named
@property (readonly getter=isAwesome) int _awesome;
^
now we emit:
crash.m:9:21: error: expected ')'
@property (readonly getter=isAwesome) int _awesome;
^
crash.m:9:11: error: to match this '('
@property (readonly getter=isAwesome) int _awesome;
^
llvm-svn: 57809
Check for @end in ParseObjCInterfaceDeclList instead of in each caller
Handle @required and @optional with the same code
Add some fixmes about some apparently objc2 code that is being accepted
in objc1.
llvm-svn: 57803
where it would reject @required in non-protocols, but then go
ahead and tag methods with required anyway. Instead, if we see
this in something other than a protocol, just ignore the request.
Also, improve error recovery a bit when we see something bogus
inside an interface.
llvm-svn: 57798
of whether a '(' was a grouping paren or the start of a function declarator.
This is PR2796.
Now we eat the attribute before deciding whether the paren is grouping or
not, then apply it to the resultant decl or to the first argument as needed.
One somewhat surprising aspect of this is that attributes interact with
implicit int in cases like this:
void a(x, y) // k&r style function
void b(__attribute__(()) x, y); // function with two implicit int arguments
void c(x, __attribute__(()) y); // error, can't have attr in identifier list.
Fun stuff.
llvm-svn: 57790
This is how this kind of initializers appear in the AST:
-The Init expression of the VarDecl is a functional type construction (of the VarDecl's type).
-The new VarDecl::hasCXXDirectInitializer() returns true.
e.g, for "int x(1);":
-VarDecl 'x' has Init with expression "int(1)" (CXXFunctionalCastExpr).
-hasCXXDirectInitializer() of VarDecl 'x' returns true.
A major benefit is that clients that don't particularly care about which exactly form was the initializer can handle both cases without special case code.
Note that codegening works now for "int x(1);" without any changes to CodeGen.
llvm-svn: 57178
This was the motivation of the following changes:
-'TentativeParsingResult' enum is replaced by a 'TPResult' class that basically encapsulates the enum.
-TPR_true, TPR_false, TPR_ambiguous, and TPR_error enum constants are replaced by TPResult::True(), TPResult::False(), etc. calls that return a TPResult object.
-Also fixed the subtle bug in Parser::isCXXFunctionDeclarator (caught by the above changes as a compilation error).
llvm-svn: 57125
'ParseTentative.cpp' implements the functionality needed to resolve ambiguous C++ statements, to either a declaration or an expression, by "tentatively parsing" them.
llvm-svn: 57084
-Scoping in C99 works good for C++ too, remove the C++-specific comments.
If someone thinks that the C++-specific comments are necessary for clarification, let me know and I'll put them back on.
llvm-svn: 56078
-The Parser calls a new "ActOnCXXTypeConstructExpr" action.
-Sema, depending on the type and expressions number:
-If the type is a class, it will treat it as a class constructor. [TODO]
-If there's only one expression (i.e. "int(0.5)" ), creates a new "CXXFunctionalCastExpr" Expr node
-If there are no expressions (i.e "int()" ), creates a new "CXXZeroInitValueExpr" Expr node.
llvm-svn: 55177
- Added as private members for each because it is not clear where to
put the common definition. Perhaps the IdentifierInfos all of these
"pseudo-keywords" should be collected into one place (this would
KnownFunctionIDs and Objective-C property IDs, for example).
Remove Token::isNamedIdentifier.
- There isn't a good reason to use strcmp when we have interned
strings, and there isn't a good reason to encourage clients to do
so.
llvm-svn: 54794
- Kill unnecessary #includes in .cpp files. This is an automatic
sweep so some things removed are actually used, but happen to be
included by a previous header. I tried to get rid of the obvious
examples and this was the easiest way to trim the #includes in one
fell swoop.
- We now return to regularly scheduled development.
llvm-svn: 54632
- ActOnDeclarator now takes an additional parameter which is the
AsmLabel if used. Its unfortunate that this bubbles up this high,
but we cannot just lump it in as an attribute without mistakenly
*accepting* it as an attribute.
- The actual asm-label itself is, however, encoded as an AsmLabelAttr
on the FunctionDecl.
- Slightly improved parser error recovery on malformed asm-labels.
- CodeGen support still missing...
llvm-svn: 54339
1) reject stuff like "id<foo> short" and "<foo> short". 2) set
the declspec range correctly 3) only parse protocol qualifiers
when in objc mode.
llvm-svn: 54086
like "id<foo>". This 1) fixes an infinite loop in the parser on things
like "short<foo>" 2) emits a warning about this bogus construct and 3)
changes the testcase to be substantially reduced.
llvm-svn: 54082
of a specific smallvector size.
Fix protocol lists to pass down proper location info, so we get diagnostics
like this:
t.m:3:35: error: cannot find protocol definition for 'NSCopying', referenced by 'NSWhatever'
@interface NSWhatever : NSObject <NSCopying>
^
instead of this:
t.m:3:44: error: cannot find protocol definition for 'NSCopying', referenced by 'NSWhatever'
@interface NSWhatever : NSObject <NSCopying>
^
Add a new IdentifierLocPair typedef which is just a pair<IdentifierInfo*, SourceLocation>
llvm-svn: 53883
-Remove ParseExpressionWithLeadingIdentifier and ParseAssignmentExprWithLeadingIdentifier.
-Separate ParseLabeledStatement from ParseIdentifierStatement.
llvm-svn: 53376
Note that Parser::ParseCXXMemberSpecification is temporarily disabled until the Sema support is in place.
Once ParseCXXMemberSpecification is enabled, the Parser/cxx-class.cpp test will pass.
llvm-svn: 52694
have Destroy methods of ObjcMethodDecl and ObjCInterfaceDecl which recursively
destroy their owned Decls and Stmts. There are a few cases where it is not
clear what to do (FIXMEs included in the patch).
llvm-svn: 52050
/* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" - nisse@lysator.liu.se. */
This commit adds the parser magic. The type associated with <p> is still incorrect. Will discuss with Chris.
llvm-svn: 51972
it fixes PR2204. Not too much to say about the implementation; it works
in a similar way to the vector size attribute.
At some point, we need to modify the targets to provide information
about the appropriate types.
llvm-svn: 51577
extend beyond the end of the function.
I'm not completely sure this is the right way to fix this bug, so
someone familiar with the parser should double-check.
llvm-svn: 51311
-identifierResolver exposes an iterator interface to get all decls through the scope chain.
-The semantic staff (checking IdentifierNamespace and Doug's checking for shadowed tags were moved out of IdentifierResolver and back into Sema. IdentifierResolver just gives an iterator for all reachable decls of an identifier.
llvm-svn: 50923
-NamespaceDecl for the AST
-Checks for name clashes between namespaces and tag/normal declarations.
This commit doesn't implement proper name lookup for namespaces.
llvm-svn: 50321
1. If we hit a semantic error, try harder to recover to emit
diagnostics for later initializer errors (PR2241).
2. Don't leak parsed initializers on an error.
llvm-svn: 49998
inheritance in C++. It'll parse the base-specifier list, e.g.,
class D : public B1, virtual public B2 { };
and do some of the simpler semantic checks (B1 and B2 are classes;
they aren't unions or incomplete types, etc).
llvm-svn: 49623
allows the parsing of "class" in addition to "struct" and "union" to
declare a record. So this patch allows:
class C { };
class C c1;
But it does not contain the lookup bits, so this won't work yet:
C c2;
Patch by Doug Gregor!
llvm-svn: 49613
1) objc ivar processing is split out of ActOnField into its own ActOnIvar method.
2) the new objc ivar action takes visibility info directly, eliminating
AllVisibilities in ParseObjCClassInstanceVariables.
llvm-svn: 49506
declarators. This allows the clients (C structs, objc classes, objc
properties, [future] C++ classes) etc, to do custom processing before invoking
an action.
This has two benefits in the short term:
1) objc ivar processing should be split out of ActOnField into its own ActOn method.
2) the new objc ivar action can take visibility info directly, eliminating
AllVisibilities in ParseObjCClassInstanceVariables.
3) objc properties can pass their own special sauce down to sema as well.
llvm-svn: 49468
sema. This allows clients of the parser to have the unmolested
list if desired, and guarantees that noone can create an
ObjCQualifiedInterfaceType with an unsorted list.
llvm-svn: 49310
(1) Remove IdLoc (it's never used).
(2) Add a bool to enable/disable lazy builtin creaation (defaults to true).
This enables us to use LookupDecl() in Sema::isTypeName(), which is also part of this commit.
To make this work, I changed isTypeName() to be a non-const member function. I'm not happy with this, however I fiddled with making LookupDecl() and friends const and it got ugly pretty quickly. We can certainly add it back if/when someone has time to fiddle with it. For now, I thought this simplification was more important than retaining the const-ness.
llvm-svn: 49087
lib dir and move all the libraries into it. This follows the main
llvm tree, and allows the libraries to be built in parallel. The
top level now enforces that all the libs are built before Driver,
but we don't care what order the libs are built in. This speeds
up parallel builds, particularly incremental ones.
llvm-svn: 48402
Douglas Gregor