Make sure methods with no return type default to "id".

This fixes a crasher in Sema::MatchTwoMethodDeclarations(), identified by selector-overload.m (just added).

Added Action::ActOnTranslationUnitScope() and renamed Action::PopScope to ActOnPopScope.

Added a Translation Unit Scope instance variable to Sema (will be very useful to ObjC-related actions, since ObjC declarations are always file-scoped).

llvm-svn: 42817

llvm-svn: 42811

llvm-svn: 42810

llvm-svn: 42809

llvm-svn: 42808

llvm-svn: 42807

llvm-svn: 42804

llvm-svn: 42803

llvm-svn: 42802

DenseMap to keep track of such declarations and derive ObjcProtocolDecl
directyly from NamedScope.

llvm-svn: 42801

llvm-svn: 42800

llvm-svn: 42799

llvm-svn: 42798

llvm-svn: 42797

llvm-svn: 42796

stuff like this:

       // If we don't have a comma, it is either the end of the list (a ';') or
       // an error, bail out.
       if (Tok.isNot(tok::comma))
         break;
instead of:
       // If we don't have a comma, it is either the end of the list (a ';') or
       // an error, bail out.
       if (Tok.getKind() != tok::comma)
         break;

There is obviously no functionality change, but the code reads a bit better and is 
more terse.

llvm-svn: 42795

llvm-svn: 42794

ParseFunctionDefinition so that ActOnFunctionDefBody is always
called if ActOnStartOfFunctionDef is called.  This fixes a crash
reported by Nuno Lopes.

llvm-svn: 42793

Use copy for LHS, because it is incremented using ++ operator.

llvm-svn: 42792

llvm-svn: 42791

fatal error of category's undefined interface.

llvm-svn: 42790

Remove 2 protocol related actions from MinimalActions (protocols shouldn't be recognized as types).

llvm-svn: 42777

Protocols are now sorted and made unique in the list.
Enhanced pretty printer for @interface (So, I can see the protocol list).

llvm-svn: 42776

Removed unused instance variable from FieldDecl.

llvm-svn: 42773

likewise block and param.  Reorder the layout of the Decl kind enum
so that the inheritance tree is reflected in the ordering.  This allows
trivial range comparisons to determine whether something is an instance
of some abstract class, making classof faster.

llvm-svn: 42772

llvm-svn: 42771

llvm-svn: 42770

Convert Selector Maps/Sets to use stronger typing (now that we have DenseMapInfo in IdentifierTable.h).

llvm-svn: 42767

llvm-svn: 42766

(minimal printing), Derive ObjcClassDecl from Decl. Ted may want to 
take note of the change I made to CFGRecStmtDeclVisitor.h

llvm-svn: 42764

ObjcProtocolDecl is now derived from ScopedDecl. ObjcForwardProtocolDecl from Decl.
ObjcImplementationDecl fom NamedDecl.

llvm-svn: 42756

llvm-svn: 42754

llvm-svn: 42731

llvm-svn: 42730

llvm-svn: 42728

Now instead of IdentifierInfo knowing anything about MacroInfo,
only the preprocessor knows.  This makes MacroInfo truly private
to the Lex library (and its direct clients) instead of being 
accessed in the Basic library.

llvm-svn: 42727

llvm-svn: 42726

call to getMacroInfo to call it.

llvm-svn: 42725

llvm-svn: 42724

(because all bitfields now fit in 32 bits).  This shrinks the identifier
table for carbon.h from 1634428 to 1451424 bytes (12%) and has no impact 
on compile time.

llvm-svn: 42723