Commit Graph

331 Commits

Author SHA1 Message Date
Douglas Gregor 5dc055350e The grammar for GNU typeof in C requires an expression to be
parenthesized, unlike in C++, e.g.,

  C has: typeof ( expression) 
  C++ has: typeof unary-expression

So, once we've parsed a parenthesized expression after typeof, we
should only go on to parse the postfix expression suffix if we're in
C++. Fixes <rdar://problem/8237491>.

llvm-svn: 109606
2010-07-28 18:22:12 +00:00
Chris Lattner 8d72f2aa3a tidy up comment.
llvm-svn: 108676
2010-07-19 05:07:24 +00:00
Douglas Gregor 0be31a2eb7 Move the "current scope" state from the Parser into Action. This
allows Sema some limited access to the current scope, which we only
use in one way: when Sema is performing some kind of declaration that
is not directly driven by the parser (e.g., due to template
instantiatio or lazy declaration of a member), we can find the Scope
associated with a DeclContext, if that DeclContext is still in the
process of being parsed. 

Use this to make the implicit declaration of special member functions
in a C++ class more "scope-less", rather than using the NULL Scope hack.

llvm-svn: 107491
2010-07-02 17:43:08 +00:00
Chris Lattner 47054fbbe9 Minor tweaks on doug's objc recovery patch: the caller
of isSimpleObjCMessageExpression checks the language,
so change a dynamic check into an assert.

isSimpleObjCMessageExpression is expensive, so only do it
in the common case when it is likely to matter: when the [
of the postfix expr starts on a new line.  This should avoid
doing lookahead for every array expression.

llvm-svn: 105229
2010-05-31 18:18:22 +00:00
Douglas Gregor 990ccace5b When we see the a '[' in a postfix expression in Objective-C, perform
a simple, quick check to determine whether the expression starting
with '[' can only be an Objective-C message send. If so, don't parse
it as an array subscript expression. This improves recovery for, e.g.,

  [a method1]
  [a method2]

so that we now produce

  t.m:10:13: error: expected ';' after expression
  [a method]
            ^

instead of some mess about expecting ']'.

llvm-svn: 105221
2010-05-31 14:40:22 +00:00
Douglas Gregor 2683c28ff6 Improve parser recovery when we try to parse a call expression but the
called function itself is invalid (e.g., because of a semantic error
referring to that declaration). Fixes <rdar://problem/8044142>.

llvm-svn: 105175
2010-05-30 22:23:08 +00:00
Douglas Gregor 7aa6b229fe Teach code completion to adjust its completion priorities based on the
type that we expect to see at a given point in the grammar, e.g., when
initializing a variable, returning a result, or calling a function. We
don't prune the candidate set at all, just adjust priorities to favor
things that should type-check, using an ultra-simplified type system.

llvm-svn: 105128
2010-05-30 01:49:25 +00:00
Douglas Gregor 205a361413 When we've parsed a nested-name-specifier in a member access
expression, "forget" about the object type; only the
nested-name-specifier matters for name lookup purposes. Fixes PR7239.

llvm-svn: 104834
2010-05-27 15:25:59 +00:00
Douglas Gregor 6da3db4af3 Improve code completion in failure cases in two ways:
1) Suppress diagnostics as soon as we form the code-completion
  token, so we don't get any error/warning spew from the early
  end-of-file.
  2) If we consume a code-completion token when we weren't expecting
  one, go into a code-completion recovery path that produces the best
  results it can based on the context that the parser is in.

llvm-svn: 104585
2010-05-25 05:58:43 +00:00
Chris Lattner fb58515bc3 improve the fixit for the missing : error when parsing ?:. When
there are already two spaces before the token where the : was expected,
put the : in between the spaces.  This means we get it right in both
of these cases:

t.c:2:17: error: expected ':'
  return a ? b  c;
                ^
               :
t.c:3:16: error: expected ':'
  return a ? b c;
               ^
               : 

In the later case, the diagnostic says to insert ": ", in the former
case it says to insert ":" between the spaces.  This fixes rdar://8007231

llvm-svn: 104569
2010-05-24 22:31:37 +00:00
Douglas Gregor 2c4a7501ee When parsing a cast-expression that starts with a scope annotation,
try to annotate as a type first to determine whether we have a
functional-style cast. Patch by Eli Friedman, fixes PR6830.

llvm-svn: 102161
2010-04-23 02:08:13 +00:00
Douglas Gregor 8d4de67e1d Implement parsing for message sends in Objective-C++. Message sends in
Objective-C++ have a more complex grammar than in Objective-C
(surprise!), because

  (1) The receiver of an instance message can be a qualified name such
  as ::I or identity<I>::type.
  (2) Expressions in C++ can start with a type.

The receiver grammar isn't actually ambiguous; it just takes a bit of
work to parse past the type before deciding whether we have a type or
expression. We do this in two places within the grammar: once for
message sends and once when we're determining whether a []'d clause in
an initializer list is a message send or a C99 designated initializer.

This implementation of Objective-C++ message sends contains one known
extension beyond GCC's implementation, which is to permit a
typename-specifier as the receiver type for a class message, e.g.,

  [typename compute_receiver_type<T>::type method];

Note that the same effect can be achieved in GCC by way of a typedef,
e.g.,

  typedef typename computed_receiver_type<T>::type Computed;
  [Computed method];

so this is merely a convenience.

Note also that message sends still cannot involve dependent types or
values.

llvm-svn: 102031
2010-04-21 22:36:40 +00:00
Douglas Gregor 0c78ad9665 Rework the Parser-Sema interaction for Objective-C message
sends. Major changes include:

  - Expanded the interface from two actions (ActOnInstanceMessage,
    ActOnClassMessage), where ActOnClassMessage also handled sends to
    "super" by checking whether the identifier was "super", to three
    actions (ActOnInstanceMessage, ActOnClassMessage,
    ActOnSuperMessage). Code completion has the same changes.
  - The parser now resolves the type to which we are sending a class
    message, so ActOnClassMessage now accepts a TypeTy* (rather than
    an IdentifierInfo *). This opens the door to more interesting
    types (for Objective-C++ support).
  - Split ActOnInstanceMessage and ActOnClassMessage into parser
    action functions (with their original names) and semantic
    functions (BuildInstanceMessage and BuildClassMessage,
    respectively). At present, this split is onyl used by
    ActOnSuperMessage, which decides which kind of super message it
    has and forwards to the appropriate Build*Message. In the future,
    Build*Message will be used by template instantiation.
  - Use getObjCMessageKind() within the disambiguation of Objective-C
    message sends vs. array designators.

Two notes about substandard bits in this patch:
  - There is some redundancy in the code in ParseObjCMessageExpr and
  ParseInitializerWithPotentialDesignator; this will be addressed
  shortly by centralizing the mapping from identifiers to type names
  for the message receiver.
  - There is some #if 0'd code that won't likely ever be used---it
  handles the use of 'super' in methods whose class does not have a
  superclass---but could be used to model GCC's behavior more
  closely. This code will die in my next check-in, but I want it in
  Subversion.

llvm-svn: 102021
2010-04-21 19:57:20 +00:00
Chris Lattner 0151b7edb7 fix the ?: fixit that ted added to recover properly.
llvm-svn: 101943
2010-04-20 21:33:39 +00:00
Ted Kremenek e601365de9 Add fixit hint for missing ':' in ternary expressions.
llvm-svn: 101073
2010-04-12 22:10:35 +00:00
Chris Lattner 5ff40fc7ab tighten the check for cast of super to avoid rejecting valid code,
rdar://7853261

llvm-svn: 101048
2010-04-12 17:09:27 +00:00
Chris Lattner 3ab8ca2894 fix a rejects-valid bug that I introduced, pointed out
by David Chisnall

llvm-svn: 101024
2010-04-12 06:27:57 +00:00
Chris Lattner 1447136553 use pointer comparison instead of isStr
llvm-svn: 101022
2010-04-12 06:22:50 +00:00
Chris Lattner cd963185f0 fix a rejects-valid testcase involving super that I dreamt up.
This also fixes cases where super is used in a block in a
method which isn't valid.

llvm-svn: 101021
2010-04-12 06:20:33 +00:00
Chris Lattner a36ec4243b fix PR6811 by not parsing 'super' as a magic expression in
LookupInObjCMethod.  Doing so allows all sorts of invalid code
to slip through to codegen.  This patch does not change the 
AST representation of super, though that would now be a natural
thing to do since it can only be in the receiver position and
in the base of a ObjCPropertyRefExpr.

There are still several ugly areas handling super in the parser,
but this is definitely a step in the right direction.

llvm-svn: 100959
2010-04-11 08:28:14 +00:00
Douglas Gregor be9ea80abf Perform code-completion within ParseCastExpression, which handles,
e.g., the right-hand side of binary expressions.

llvm-svn: 100526
2010-04-06 15:09:27 +00:00
John McCall 1f476a1783 Fix an assertion-on-error during tentative constructor parsing by
propagating error conditions out of the various annotate-me-a-snowflake
routines.  Generally (but not universally) removes redundant diagnostics
as well as, you know, not crashing on bad code.  On the other hand,
I have just signed myself up to fix fiddly parser errors for the next
week.  Again.

llvm-svn: 97221
2010-02-26 08:45:28 +00:00
Douglas Gregor cd3f49fc88 Restore the invariant that a nested-name-specifier can only contain
class types, dependent types, and namespaces. I had previously
weakened this invariant while working on parsing pseudo-destructor
expressions, but recent work in that area has made these changes
unnecessary.

llvm-svn: 97112
2010-02-25 04:46:04 +00:00
Douglas Gregor e610adae17 Rework parsing of pseudo-destructor expressions and explicit
destructor calls, e.g., 

  p->T::~T

We now detect when the member access that we've parsed, e.g.,

  p-> or x.

may be a pseudo-destructor expression, either because the type of p or
x is a scalar or because it is dependent (and, therefore, may become a
scalar at template instantiation time). 

We then parse the pseudo-destructor grammar specifically:

  ::[opt] nested-name-specifier[opt] type-name :: ∼ type-name

and hand those results to a new action, ActOnPseudoDestructorExpr,
which will cope with both dependent member accesses of destructors and
with pseudo-destructor expressions.

This commit affects the parsing of pseudo-destructors, only; the
semantic actions still go through the semantic actions for member
access expressions. That will change soon.

llvm-svn: 97045
2010-02-24 18:44:31 +00:00
Douglas Gregor 90d554ecb3 Implement support for parsing pseudo-destructor expression with a nested-name-specifier, e.g.,
typedef int Int;
  int *p;
  p->Int::~Int();

This weakens the invariant that the only types in nested-name-specifiers are tag types (restricted to class types in C++98/03). However, we weaken this invariant as little as possible, accepting arbitrary types in nested-name-specifiers only when we're in a member access expression that looks like a pseudo-destructor expression.

llvm-svn: 96743
2010-02-21 18:36:56 +00:00
Douglas Gregor 7df89f5d18 When we're parsing an expression that may have looked like a
declaration, we can end up with template-id annotation tokens for
types that have not been converted into type annotation tokens. When
this is the case, translate the template-id into a type and parse as
an expression.

llvm-svn: 95404
2010-02-05 19:11:37 +00:00
John Thompson 2233460de6 First stage of adding AltiVec support
llvm-svn: 95335
2010-02-05 00:12:22 +00:00
Douglas Gregor 504a6ae83e Improve code completion by introducing patterns for the various C and
C++ grammatical constructs that show up in top-level (namespace-level)
declarations, member declarations, template declarations, statements,
expressions, conditions, etc. For example, we now provide a pattern
for

  static_cast<type>(expr)

when we can have an expression, or

  using namespace identifier;

when we can have a using directive.

Also, improves the results of code completion at the beginning of a
top-level declaration. Previously, we would see value names (function
names, global variables, etc.); now we see types, namespace names,
etc., but no values.

llvm-svn: 93134
2010-01-10 23:08:15 +00:00
John McCall 64fe233704 When parsing an identifier as an expression in C++, only try to annotate it
as a type or scope token if the next token requires it.

This eliminates a lot of redundant lookups in C++, but there's room for
improvement;  a better solution would do a single lookup whose kind and
results would be passed through the parser.

llvm-svn: 92930
2010-01-07 19:29:58 +00:00
Chris Lattner 3c674cf804 If we enter parens, colons can become un-sacred, allowing us to emit
a better diagnostic in the second example.

llvm-svn: 91040
2009-12-10 02:08:07 +00:00
Chris Lattner 244b96ba0a fix a more evil case of : / :: confusion arising in ?:.
llvm-svn: 91039
2009-12-10 02:02:58 +00:00
Chris Lattner 8a9a97a660 rename ExtensionRAIIObject.h -> RAIIObjectsForParser.h
llvm-svn: 91008
2009-12-10 00:21:05 +00:00
Sebastian Redl 79eba1ca3b Introduce the notion of literal types, as specified in C++0x.
llvm-svn: 90361
2009-12-03 00:13:20 +00:00
Fariborz Jahanian 906d871e6c Some fancy footwork to move the decision on how
to build casted expression-list AST to Sema.

llvm-svn: 89827
2009-11-25 01:26:41 +00:00
Fariborz Jahanian 3f21c159dc Fix a recent regression probably caused by addition of altivec-style
type-casts in the parser.

llvm-svn: 89691
2009-11-23 19:51:43 +00:00
Alexis Hunt 96d5c76498 Added rudimentary C++0x attribute support.
The following attributes are currently supported in C++0x attribute
lists (and in GNU ones as well):
 - align() - semantics believed to be conformant to n3000, except for
   redeclarations and what entities it may apply to
 - final - semantics believed to be conformant to CWG issue 817's proposed
   wording, except for redeclarations
 - noreturn - semantics believed to be conformant to n3000, except for
   redeclarations
 - carries_dependency - currently ignored (this is an optimization hint)

llvm-svn: 89543
2009-11-21 08:43:09 +00:00
Fariborz Jahanian 1bc0f9affc This patch fixes a bug in misdiagnosing correct
use of pointer to data member.

llvm-svn: 89251
2009-11-18 21:54:48 +00:00
Douglas Gregor 7f4d7ea3a9 Remove a bunch of #if 0'd code made irrelevant by the latest ParseUnqualifiedId changes
llvm-svn: 85938
2009-11-03 20:53:48 +00:00
Douglas Gregor 30d60cb36e Replace the code that parses member access expressions after "." or
"->" with a use of ParseUnqualifiedId. Collapse
ActOnMemberReferenceExpr, ActOnDestructorReferenceExpr (both of them),
ActOnOverloadedOperatorReferenceExpr,
ActOnConversionOperatorReferenceExpr, and
ActOnMemberTemplateIdReferenceExpr into a single, new action
ActOnMemberAccessExpr that does the same thing more cleanly (and can
keep more source-location information).

llvm-svn: 85930
2009-11-03 19:44:04 +00:00
Douglas Gregor a121b75d9d Use ParseUnqualifiedId when parsing id-expressions. This eliminates
yet another copy of the unqualified-id parsing code.

Also, use UnqualifiedId to simplify the Action interface for building
id-expressions. ActOnIdentifierExpr, ActOnCXXOperatorFunctionIdExpr,
ActOnCXXConversionFunctionExpr, and ActOnTemplateIdExpr have all been
removed in favor of the new ActOnIdExpression action.

llvm-svn: 85904
2009-11-03 16:56:39 +00:00
Chris Lattner 17e15f18c5 simplify Sema::getTypeName a bit: if control gets out of the switch,
IIDecl cannot be null.  There is no need to check for both C++ mode and
presence of CXXRecordDecl.  ObjC interfaces can't have ScopeSpecs.

llvm-svn: 85057
2009-10-25 17:16:46 +00:00
Chris Lattner 5566290b34 In objc mode, every identifier in a cast expression was using doing a
type looking using getTypeName() and every property access was using
NextToken() to do lookahead to see if the identifier is followed by
a '.'.  Rearrange this code to not need lookahead and only do the
type lookup if we have "identifier." in the token stream.  Also
improve a diagnostic a bit.

llvm-svn: 85056
2009-10-25 17:04:48 +00:00
Fariborz Jahanian 9a14b84ac5 Diagnose misuse of '.*' and '->*' operators during parse
instead of crashing in code gen.

llvm-svn: 84968
2009-10-23 21:01:39 +00:00
Douglas Gregor c59e56190e Parse a simple-template-id following a '~' when calling a destructor, e.g.,
t->~T<A0, A1>()

Fixes PR5213.

llvm-svn: 84545
2009-10-19 22:04:39 +00:00
Anders Carlsson 8523d20af3 Pass the right SourceLocation to Actions.ActOnOverloadedOperatorReferenceExpr and Actions.ActOnConversionOperatorReferenceExpr. Update incomplete-call.cpp test.
llvm-svn: 84026
2009-10-13 21:02:07 +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
Douglas Gregor 9d64c5e3a5 Code completion for ordinary names when we're starting a declaration, expression, or statement
llvm-svn: 82481
2009-09-21 20:51:25 +00:00
Douglas Gregor 2436e7116b Initial implementation of a code-completion interface in Clang. In
essence, code completion is triggered by a magic "code completion"
token produced by the lexer [*], which the parser recognizes at
certain points in the grammar. The parser then calls into the Action
object with the appropriate CodeCompletionXXX action.

Sema implements the CodeCompletionXXX callbacks by performing minimal
translation, then forwarding them to a CodeCompletionConsumer
subclass, which uses the results of semantic analysis to provide
code-completion results. At present, only a single, "printing" code
completion consumer is available, for regression testing and
debugging. However, the design is meant to permit other
code-completion consumers.

This initial commit contains two code-completion actions: one for
member access, e.g., "x." or "p->", and one for
nested-name-specifiers, e.g., "std::". More code-completion actions
will follow, along with improved gathering of code-completion results
for the various contexts.

[*] In the current -code-completion-dump testing/debugging mode, the
file is truncated at the completion point and EOF is translated into
"code completion".

llvm-svn: 82166
2009-09-17 21:32:03 +00:00
Mike Stump 11289f4280 Remove tabs, and whitespace cleanups.
llvm-svn: 81346
2009-09-09 15:08:12 +00:00
Douglas Gregor 308047d3a5 Initial stab at implement dependent member references to member
templates, e.g.,
  
  x.template get<T>

We can now parse these, represent them within an UnresolvedMemberExpr
expression, then instantiate that expression node in simple cases.

This allows us to stumble through parsing LLVM's Casting.h.

llvm-svn: 81300
2009-09-09 00:23:06 +00:00
Douglas Gregor bddb73fa1d If a destructor is referenced or a pseudo-destructor expression is
formed without a trailing '(', diagnose the error (these expressions
must be immediately called), emit a fix-it hint, and fix the code.

llvm-svn: 81015
2009-09-04 18:29:40 +00:00
Douglas Gregor b7bfe79412 Rewrite of our handling of name lookup in C++ member access expressions, e.g.,
x->Base::f

We no longer try to "enter" the context of the type that "x" points
to. Instead, we drag that object type through the parser and pass it
into the Sema routines that need to know how to perform lookup within
member access expressions.

We now implement most of the crazy name lookup rules in C++
[basic.lookup.classref] for non-templated code, including performing
lookup both in the context of the type referred to by the member
access and in the scope of the member access itself and then detecting
ambiguities when the two lookups collide (p1 and p4; p3 and p7 are
still TODO). This change also corrects our handling of name lookup
within template arguments of template-ids inside the
nested-name-specifier (p6; we used to look into the scope of the
object expression for them) and fixes PR4703.

I have disabled some tests that involve member access expressions
where the object expression has dependent type, because we don't yet
have the ability to describe dependent nested-name-specifiers starting
with an identifier.

llvm-svn: 80843
2009-09-02 22:59:36 +00:00
Douglas Gregor fbc1823451 Add parsing for references to member function templates with explicit
template argument lists, e.g., x.f<int>().

Semantic analysis will be a separate commit.

llvm-svn: 80624
2009-08-31 21:16:32 +00:00
Douglas Gregor 522fbc4969 Support explicit C++ member operator syntax, from James Porter!
llvm-svn: 80608
2009-08-31 19:52:13 +00:00
Anders Carlsson e7b9d71aab Address some of Doug's comments.
llvm-svn: 80114
2009-08-26 17:36:19 +00:00
Anders Carlsson 7e3f0e4e0d Parsing of pseudo-destructors.
llvm-svn: 80055
2009-08-25 23:46:41 +00:00
Argyrios Kyrtzidis 20cf19141f Keep track of the right paren ')' source location in a function declarator.
llvm-svn: 79489
2009-08-19 23:14:54 +00:00
Eli Friedman c96d4963eb Implement __is_empty. Patch by Sean Hunt.
llvm-svn: 79143
2009-08-15 21:55:26 +00:00
Nate Begeman 5ec4b318e3 Take 2 on AltiVec-style vector initializers.
Fixes PR4704 problems

Addresses Eli's patch feedback re: ugly cast code

Updates all postfix operators to remove ParenListExprs.  While this is awful,
no better solution (say, in the parser) is obvious to me.  Better solutions
welcome.

llvm-svn: 78621
2009-08-10 23:49:36 +00:00
Daniel Dunbar 481fe50903 Revert r78535, it is causing a number of failures to build projects.
--- Reverse-merging r78535 into '.':
D    test/Sema/altivec-init.c
U    include/clang/Basic/DiagnosticSemaKinds.td
U    include/clang/AST/Expr.h
U    include/clang/AST/StmtNodes.def
U    include/clang/Parse/Parser.h
U    include/clang/Parse/Action.h
U    tools/clang-cc/clang-cc.cpp
U    lib/Frontend/PrintParserCallbacks.cpp
U    lib/CodeGen/CGExprScalar.cpp
U    lib/Sema/SemaInit.cpp
U    lib/Sema/Sema.h
U    lib/Sema/SemaExpr.cpp
U    lib/Sema/SemaTemplateInstantiateExpr.cpp
U    lib/AST/StmtProfile.cpp
U    lib/AST/Expr.cpp
U    lib/AST/StmtPrinter.cpp
U    lib/Parse/ParseExpr.cpp
U    lib/Parse/ParseExprCXX.cpp

llvm-svn: 78551
2009-08-10 03:01:36 +00:00
Nate Begeman a96114ed08 AltiVec-style vector initializer syntax, vec4 a = (vec4)(a, b, c, d);
In addition to being defined by the AltiVec PIM, this is also the vector
initializer syntax used by OpenCL, so that vector literals are compatible
with macro arguments.

llvm-svn: 78535
2009-08-09 17:55:44 +00:00
Douglas Gregor d806156d54 Support nested-name-specifiers for C++ member access expressions, e.g.,
this->Base::foo

from James Porter!

llvm-svn: 78278
2009-08-06 03:17:00 +00:00
Douglas Gregor 79f83eda84 This patch fixes the implementations of the __has_trivial_destructor
and __has_trivial_constructor builtin pseudo-functions and
additionally implements __has_trivial_copy and __has_trivial_assign,
from John McCall!

llvm-svn: 76916
2009-07-23 23:49:00 +00:00
Alisdair Meredith a9ad47d94c Basic support for C++0x unicode types. Support for literals will follow in an incremental patch
llvm-svn: 75622
2009-07-14 06:30:34 +00:00
Douglas Gregor a727cb98a4 Preliminary parsing and ASTs for template-ids that refer to function
templates, such as make<int&>. These template-ids are only barely
functional for function calls; much more to come.

llvm-svn: 74563
2009-06-30 22:34:41 +00:00
Eli Friedman 5e774b1333 Fix the parser error hanlding for __builtin_offsetof to actually print
out an error for a malformed __builtin_offsetof.

llvm-svn: 74388
2009-06-27 20:38:33 +00:00
Douglas Gregor 0b6a6242ed Rework the way we track which declarations are "used" during
compilation, and (hopefully) introduce RAII objects for changing the
"potentially evaluated" state at all of the necessary places within
Sema and Parser. Other changes:

  - Set the unevaluated/potentially-evaluated context appropriately
    during template instantiation.
  - We now recognize three different states while parsing or
    instantiating expressions: unevaluated, potentially evaluated, and
    potentially potentially evaluated (for C++'s typeid).
  - When we're in a potentially potentially-evaluated context, queue
    up MarkDeclarationReferenced calls in a stack. For C++ typeid
    expressions that are potentially evaluated, we will play back
    these MarkDeclarationReferenced calls when we exit the
    corresponding potentially potentially-evaluated context.
  - Non-type template arguments are now parsed as constant
    expressions, so they are not potentially-evaluated.

llvm-svn: 73899
2009-06-22 20:57:11 +00:00
Douglas Gregor c9c02ed8f4 Keep track of when declarations are "used" according to C and
C++. This logic is required to trigger implicit instantiation of
function templates and member functions of class templates, which will
be implemented separately.

This commit includes support for -Wunused-parameter, printing warnings
for named parameters that are not used within a function/Objective-C
method/block. Fixes <rdar://problem/6505209>.

llvm-svn: 73797
2009-06-19 23:52:42 +00:00
Eli Friedman 6d692cc2e8 PR4364: fix parsing 'typename' in an expression.
llvm-svn: 73177
2009-06-11 00:33:41 +00:00
Sebastian Redl fb3f1794e1 Disallow exception specs on typedefs.
llvm-svn: 72664
2009-05-31 11:47:27 +00:00
Sebastian Redl d643456d45 Reject incomplete types in exception specs.
llvm-svn: 72580
2009-05-29 18:02:33 +00:00
Argyrios Kyrtzidis 12179bc014 Handle correctly a very ugly part of the C++ syntax. We cannot disambiguate between a parenthesized type-id and
a paren expression without considering the context past the parentheses.

Behold:
  (T())x;  - type-id
  (T())*x; - type-id
  (T())/x; - expression
  (T());   - expression

llvm-svn: 72260
2009-05-22 10:24:42 +00:00
Argyrios Kyrtzidis 5da1f08587 Factor the compound literal parsing out from ParseParenExpression and into a new ParseCompoundLiteralExpression.
No functionality change.

llvm-svn: 72259
2009-05-22 10:24:05 +00:00
Argyrios Kyrtzidis 9a9c0f4eff Modification to ParseParenExpression.
Now it parses the cast expression unless 'stopIfCastExpr' is true.

llvm-svn: 72258
2009-05-22 10:23:40 +00:00
Argyrios Kyrtzidis 7bd98440b3 Refactor the common code of 'ParseTypeofSpecifier' and 'ParseSizeofAlignofExpression' into a new
'ParseExprAfterTypeofSizeofAlignof' method.

llvm-svn: 72256
2009-05-22 10:22:50 +00:00
Douglas Gregor 269f0b1b69 Merge the ASTVector and ASTOwningVector templates, since they offered
redundant functionality. The result (ASTOwningVector) lives in
clang/Parse/Ownership.h and is used by both the parser and semantic
analysis. No intended functionality change.

llvm-svn: 72214
2009-05-21 16:25:11 +00:00
Jay Foad 7d0479f2c2 Use v.data() instead of &v[0] when SmallVector v might be empty.
llvm-svn: 72210
2009-05-21 09:52:38 +00:00
Eli Friedman 15af3ee6a9 Make the RAII extension warning silencing for __extension__ a bit
narrower, so it doesn't catch expresions that aren't sub-expressions of
__extension__ operator.

llvm-svn: 71967
2009-05-16 23:40:44 +00:00
Mike Stump b9075ae9f7 Fixup __extension__ i = 1 parsing. Thanks Eli!
llvm-svn: 71927
2009-05-16 04:31:34 +00:00
Mike Stump 76b824c388 Fixup parsing for (throw,throw) and __extension__ throw 1.
llvm-svn: 71897
2009-05-15 21:47:08 +00:00
Sebastian Redl 576fd424df Implement C++0x nullptr.
llvm-svn: 71405
2009-05-10 18:38:11 +00:00
Mike Stump a74841e22c Remove extra line.
llvm-svn: 70418
2009-04-29 22:11:32 +00:00
Mike Stump 56ed2eab9e Fixup Sema and CodeGen for block literal attributes when the return
type and argument types are missing, and let return type deduction
happen before we give errors for returning from a noreturn block.
Radar 6441502

llvm-svn: 70413
2009-04-29 21:40:37 +00:00
Mike Stump 88788feddd Sema and CodeGen support for attributes on blocks. Radar 6441502
llvm-svn: 70403
2009-04-29 19:03:13 +00:00
Sebastian Redl 2b9cacbffa Have the parser communicate the exception specification to the action.
llvm-svn: 70389
2009-04-29 17:30:04 +00:00
Chris Lattner f6d1c9c7f0 This is a pretty big cleanup for how invalid decl/type are handle.
This gets rid of a bunch of random InvalidDecl bools in sema, changing
us to use the following approach:

1. When analyzing a declspec or declarator, if an error is found, we 
   set a bit in Declarator saying that it is invalid.
2. Once the Decl is created by sema, we immediately set the isInvalid
   bit on it from what is in the declarator.  From this point on, sema
   consistently looks at and sets the bit on the decl.

This gives a very clear separation of concerns and simplifies a bunch
of code.  In addition to this, this patch makes these changes:

1. it renames DeclSpec::getInvalidType() -> isInvalidType().
2. various "merge" functions no longer return bools: they just set the
   invalid bit on the dest decl if invalid.
3. The ActOnTypedefDeclarator/ActOnFunctionDeclarator/ActOnVariableDeclarator
   methods now set invalid on the decl returned instead of returning an
   invalid bit byref.
4. In SemaType, refering to a typedef that was invalid now propagates the
   bit into the resultant type.  Stuff declared with the invalid typedef
   will now be marked invalid.
5. Various methods like CheckVariableDeclaration now return void and set the
   invalid bit on the decl they check.


There are a few minor changes to tests with this, but the only major bad
result is test/SemaCXX/constructor-recovery.cpp.  I'll take a look at this
next.

llvm-svn: 70020
2009-04-25 08:06:05 +00:00
Chris Lattner f95894c1d2 fix two error paths out of ParseBlockLiteralExpression to
call ActOnBlockError so that CurBlock gets popped.  This
fixes a crash on test/block-syntax-error.c when this new
assertion is enabled.

llvm-svn: 69464
2009-04-18 20:05:34 +00:00
Anders Carlsson 6dc3575220 Add support for the __has_trivial_destructor type trait.
llvm-svn: 69345
2009-04-17 02:34:54 +00:00
Sebastian Redl 1a99f441e6 Fix a crash bug when comparing overload quality of conversion operators with conversion constructors.
Remove an atrocious amount of trailing whitespace in the overloaded operator mangler. Sorry, couldn't help myself.
Change the DeclType parameter of Sema::CheckReferenceInit to be passed by value instead of reference. It wasn't changed anywhere.
Let the parser handle C++'s irregular grammar around assignment-expression and conditional-expression.
And finally, the reason for all this stuff: implement C++ semantics for the conditional operator. The implementation is complete except for determining lvalueness.

llvm-svn: 69299
2009-04-16 17:51:27 +00:00
Anders Carlsson fe63dc52f9 Add support for the __has_trivial_constructor type trait.
llvm-svn: 69245
2009-04-16 00:08:20 +00:00
Mike Stump d73e4419f5 Fixup whitespacing.
llvm-svn: 69055
2009-04-14 18:24:37 +00:00
Chris Lattner 0d6c061401 Improve error recovery for calls, fixing:
PR3972: Poor diagnostic with missing ')'

llvm-svn: 68932
2009-04-13 00:10:38 +00:00
Steve Naroff d5ca2d0165 Fix http://llvm.org/bugs/show_bug.cgi?id=3907.
llvm-svn: 68338
2009-04-02 18:37:59 +00:00
Douglas Gregor 333489bba3 Initial implementation of parsing, semantic analysis, and template
instantiation for C++ typename-specifiers such as

  typename T::type

The parsing of typename-specifiers is relatively easy thanks to
annotation tokens. When we see the "typename", we parse the
typename-specifier and produce a typename annotation token. There are
only a few places where we need to handle this. We currently parse the
typename-specifier form that terminates in an identifier, but not the
simple-template-id form, e.g.,

  typename T::template apply<U, V>

Parsing of nested-name-specifiers has a similar problem, since at this
point we don't have any representation of a class template
specialization whose template-name is unknown.

Semantic analysis is only partially complete, with some support for
template instantiation that works for simple examples. 

llvm-svn: 67875
2009-03-27 23:10:48 +00:00
Chris Lattner 9eac931b5f Fix rdar://6719156 - clang should emit a better error when blocks are disabled but are used anyway
by changing blocks from being disabled in the parser to being disabled
in Sema.

llvm-svn: 67816
2009-03-27 04:18:06 +00:00
Chris Lattner f37e09e0fc improve error recovery for when type parsing fails.
llvm-svn: 67626
2009-03-24 17:21:43 +00:00
Anders Carlsson 7cbd8fb6b0 Keep track of whether a class is abstract or not. This is currently only used for the __is_abstract type trait.
llvm-svn: 67461
2009-03-22 01:52:17 +00:00
Sebastian Redl 6d4256c3c1 Convert a bunch of actions to smart pointers, and also bring PrintParserCallbacks a bit more in line with reality.
llvm-svn: 67029
2009-03-15 17:47:39 +00:00
Steve Naroff 9527bbfc08 Implement property '.' notation on Factory/Class objects. Parser changes aren't very pretty:-(
This fixes <rdar://problem/6496506> Implement class setter/getter for properties.

llvm-svn: 66465
2009-03-09 21:12:44 +00:00
Chris Lattner f68012072c if we crash while parsing a block literal, include it.
llvm-svn: 66150
2009-03-05 07:32:12 +00:00
Fariborz Jahanian b8d091c4eb Implemented access check for ivars accessed inside
c-style functions declared inside objc @implementations.

llvm-svn: 66087
2009-03-04 22:30:12 +00:00
Douglas Gregor 87f95b0a6a Introduce code modification hints into the diagnostics system. When we
know how to recover from an error, we can attach a hint to the
diagnostic that states how to modify the code, which can be one of:

  - Insert some new code (a text string) at a particular source
    location
  - Remove the code within a given range
  - Replace the code within a given range with some new code (a text
    string)

Right now, we use these hints to annotate diagnostic information. For
example, if one uses the '>>' in a template argument in C++98, as in
this code:

  template<int I> class B { };
  B<1000 >> 2> *b1;

we'll warn that the behavior will change in C++0x. The fix is to
insert parenthese, so we use code insertion annotations to illustrate
where the parentheses go:

test.cpp:10:10: warning: use of right-shift operator ('>>') in template
argument will require parentheses in C++0x
  B<1000 >> 2> *b1;
         ^
    (        )


Use of these annotations is partially implemented for HTML
diagnostics, but it's not (yet) producing valid HTML, which may be
related to PR2386, so it has been #if 0'd out.

In this future, we could consider hooking this mechanism up to the
rewriter to actually try to fix these problems during compilation (or,
after a compilation whose only errors have fixes). For now, however, I
suggest that we use these code modification hints whenever we can, so
that we get better diagnostics now and will have better coverage when
we find better ways to use this information.

This also fixes PR3410 by placing the complaint about missing tokens
just after the previous token (rather than at the location of the next
token).

llvm-svn: 65570
2009-02-26 21:00:50 +00:00
Douglas Gregor cbb45d0c65 Cope with use of the token '>>' inside a template argument list, e.g.,
vector<vector<double>> Matrix;

In C++98/03, this token always means "right shift". However, if we're in
a context where we know that it can't mean "right shift", provide a
friendly reminder to put a space between the two >'s and then treat it
as two >'s as part of recovery.

In C++0x, this token is always broken into two '>' tokens.

llvm-svn: 65484
2009-02-25 23:02:36 +00:00
Chris Lattner d7cfc246f6 rip out __builtin_overload
llvm-svn: 64961
2009-02-18 22:14:55 +00:00
Douglas Gregor 220cac5e89 Update Parser::ParseTypeName to return a TypeResult, which also tells
us whether there was an error in trying to parse a type-name (type-id
in C++). This allows propagation of errors further in the compiler,
suppressing more bogus error messages.

llvm-svn: 64922
2009-02-18 17:45:20 +00:00
Douglas Gregor 94349fd8cb Allow "overloadable" functions in C to be declared as variadic without
any named parameters, e.g., this is accepted in C:

  void f(...) __attribute__((overloadable));

although this would be rejected:

  void f(...);

To do this, moved the checking of the "ellipsis without any named
arguments" condition from the parser into Sema (where it belongs anyway).

llvm-svn: 64902
2009-02-18 07:07:28 +00:00
Douglas Gregor 0db4ccd7fb Implement Sebastian's idea for simplifying our handling of the greater-than operator/delimiter. Also, clean up after ourselves following a failed parse of a template-argument-list
llvm-svn: 64166
2009-02-09 21:04:56 +00:00
Douglas Gregor 8bf4205c70 Start processing template-ids as types when the template-name refers
to a class template. For example, the template-id 'vector<int>' now
has a nice, sugary type in the type system. What we can do now:

  - Parse template-ids like 'vector<int>' (where 'vector' names a
    class template) and form proper types for them in the type system.
  - Parse icky template-ids like 'A<5>' and 'A<(5 > 0)>' properly,
    using (sadly) a bool in the parser to tell it whether '>' should
    be treated as an operator or not.

This is a baby-step, with major problems and limitations:
  - There are currently two ways that we handle template arguments
  (whether they are types or expressions). These will be merged, and,
  most likely, TemplateArg will disappear.
  - We don't have any notion of the declaration of class template
  specializations or of template instantiations, so all template-ids
  are fancy names for 'int' :)

llvm-svn: 64153
2009-02-09 18:46:07 +00:00
Sebastian Redl f6591ca6d9 Implement Declarator::getSourceRange().
llvm-svn: 64151
2009-02-09 18:23:29 +00:00
Sebastian Redl 112a976616 Implement dereferencing of pointers-to-member.
llvm-svn: 63983
2009-02-07 00:15:38 +00:00
Sebastian Redl 726a0d9524 Put the invalid flag of OwningResult into the Action pointer.
This shrinks OwningResult by one pointer. Since it is no longer larger than OwningPtr, merge the two.
This leads to simpler client code and speeds up my benchmark by 2.7%.
For some reason, this exposes a previously hidden bug, causing a regression in SemaCXX/condition.cpp.

llvm-svn: 63867
2009-02-05 15:02:23 +00:00
Mike Stump 82f071faa7 Add support for blocks with explicit return types.
llvm-svn: 63784
2009-02-04 22:31:32 +00:00
Sebastian Redl 3d3f75a995 Allow taking the address of data members, resulting in a member pointer.
Pointers to functions don't work yet, and pointers to overloaded functions even less. Also, far too much illegal code is accepted.

llvm-svn: 63655
2009-02-03 20:19:35 +00:00
Mike Stump 99231d5c98 Formatting fix.
llvm-svn: 63573
2009-02-02 23:46:21 +00:00
Eli Friedman eb3a9b03ab Fix for PR3418: make sure to handle the RHS of expressions starting with
__extension__.  This sort of construct shows up in the gcc source code.

llvm-svn: 63100
2009-01-27 08:43:38 +00:00
Chris Lattner 1ce41edd8d Optimize Declarator to avoid malloc/free traffic for the argument list of a
function DeclaratorChunk in common cases.  This uses a fixed array in 
Declarator when it is small enough for the first function declarator chunk
in a declarator.

This eliminates all malloc/free traffic from DeclaratorChunk::getFunction
when running on Cocoa.h except for five functions: signal/bsd_signal/sigset,
which have multiple Function DeclChunk's, and 
CFUUIDCreateWithBytes/CFUUIDGetConstantUUIDWithBytes, which take more than
16 arguments.

This patch was pair programmed with Steve.

llvm-svn: 62599
2009-01-20 19:11:22 +00:00
Sebastian Redl b5d49356e6 Convert more expression actions to smart pointers.
llvm-svn: 62537
2009-01-19 22:31:54 +00:00
Sebastian Redl c215cfc3e1 Convert more expression actions to smart pointers.
Fix type of logical negation for C++.

llvm-svn: 62475
2009-01-19 00:08:26 +00:00
Sebastian Redl ffbcf96d1c Convert a few expression actions to smart pointers.
These actions are extremely widely used (identifier expressions and literals); still no performance regression.

llvm-svn: 62468
2009-01-18 18:53:16 +00:00
Fariborz Jahanian f2a3120b77 Patch to keep clang honest that it does not yet support
explicit return type on block literals.

llvm-svn: 62240
2009-01-14 19:39:53 +00:00
Chris Lattner a8a3f73a47 rename tok::annot_qualtypename -> tok::annot_typename, which is both
shorter and  more accurate.  The type name might not be qualified.

llvm-svn: 61788
2009-01-06 05:06:21 +00:00
Sebastian Redl baad4e765f PODness and Type Traits
Make C++ classes track the POD property (C++ [class]p4)
Track the existence of a copy assignment operator.
Implicitly declare the copy assignment operator if none is provided.
Implement most of the parsing job for the G++ type traits extension.
Fully implement the low-hanging fruit of the type traits:
__is_pod: Whether a type is a POD.
__is_class: Whether a type is a (non-union) class.
__is_union: Whether a type is a union.
__is_enum: Whether a type is an enum.
__is_polymorphic: Whether a type is polymorphic (C++ [class.virtual]p1).

llvm-svn: 61746
2009-01-05 20:52:13 +00:00
Chris Lattner 8a7d10d753 remove optimization to avoid looking ahead for cases like ::foo. This
isn't worth the complexity and the code already does a ton of lookahead.

llvm-svn: 61671
2009-01-05 03:55:46 +00:00
Chris Lattner b5134c05b9 TryAnnotateTypeOrScopeToken and TryAnnotateCXXScopeToken can
only be called when they might be needed now, so make them assert
that their current token is :: or identifier.

llvm-svn: 61662
2009-01-05 01:24:05 +00:00
Chris Lattner 1f69ebb5fa code simplification
llvm-svn: 61654
2009-01-04 23:46:59 +00:00
Chris Lattner 9a8968b50d my previous patch caused sema to drop the global qualifier, make
sure to pass it down.  This makes the code a bit gross, I will clean
it up in subsequent commits.

llvm-svn: 61650
2009-01-04 23:23:14 +00:00
Chris Lattner 122db26b28 sink the call to TryAnnotateTypeOrScopeToken in
ParseCastExpression into the switch.  This gets it out of the hot
path through ParseCastExpression for all the non-identifier and 
non-:: tokens.

llvm-svn: 61643
2009-01-04 22:52:14 +00:00
Chris Lattner 8a38aa83da simplify control flow by removing a goto.
llvm-svn: 61641
2009-01-04 22:28:21 +00:00
Chris Lattner 109faf2b8b eliminate lookahead when parsing ::new / ::delete.
llvm-svn: 61638
2009-01-04 21:25:24 +00:00
Douglas Gregor 55297ac499 Don't explicitly represent OverloadedFunctionDecls within
DeclContext. Instead, just keep the list of currently-active
declarations and only build the OverloadedFunctionDecl when we
absolutely need it.

This is a half-step toward eliminating the need to explicitly build
OverloadedFunctionDecls that store sets of overloaded
functions. This was suggested by Argiris a while back, and it's a good
thing for several reasons: first, it eliminates the messy logic that
currently tries to keep the OverloadedFunctionDecl in sync with the 
declarations that are being added. Second, it will (eventually)
eliminate the need to allocate memory for overload sets, which could
help performance. Finally, it helps set us up for when name lookup can
return multiple (possibly ambiguous) results, as can happen with
lookup of class members in C++.

Next steps: make the IdentifierResolver store overloads as separate
entries in its list rather than replacing them with an
OverloadedFunctionDecl now, then see how far we can go toward
eliminating OverloadedFunctionDecl entirely.

llvm-svn: 61357
2008-12-23 00:26:44 +00:00
Sebastian Redl cb6e2c6156 Convert remaining expression parsers to smart pointers. Now on to the Action connection.
llvm-svn: 60982
2008-12-13 15:32:12 +00:00
Chris Lattner 6bf1db148c fix a buggy fall through that caused a crash-on-invalid. rdar://6248081
llvm-svn: 60961
2008-12-12 19:20:14 +00:00
Chris Lattner d8980509b3 minor refactoring of ParseParenExpression
llvm-svn: 60928
2008-12-12 06:00:12 +00:00
Sebastian Redl d65cea8dde Convert a big bunch of expression parsers to use smart pointers.
llvm-svn: 60906
2008-12-11 22:51:44 +00:00
Sebastian Redl 90893187c4 Convert some more expression parsers to use smart pointers.
llvm-svn: 60904
2008-12-11 22:33:27 +00:00
Sebastian Redl 59b5e517c7 Convert selected expression parsers to use smart pointers.
llvm-svn: 60900
2008-12-11 21:36:32 +00:00
Sebastian Redl 042ad95d4e Convert a number of statement parsers to smart pointers.
llvm-svn: 60888
2008-12-11 19:30:53 +00:00
Douglas Gregor 7307d6ca96 Use a scoped object to manage entry/exit from a parser scope rather than explicitly calling EnterScope/ExitScope
llvm-svn: 60830
2008-12-10 06:34:36 +00:00
Sebastian Redl d9f7b1c230 Modify the move emulation according to the excellent design of Howard Hinnant. Makes for much nicer syntax when smart pointers are used consistently. Also, start converting internal argument passing of Parser to smart pointers.
llvm-svn: 60809
2008-12-10 00:02:53 +00:00
Sebastian Redl c13f26873f Kick out the proof-of-concept ASTOwner and replace it with ASTOwningResult
llvm-svn: 60791
2008-12-09 20:22:58 +00:00
Sebastian Redl 17f2c7d251 Consistently use smart pointers for stmt and expr nodes in parser local variables.
llvm-svn: 60761
2008-12-09 13:15:23 +00:00
Douglas Gregor b0846b0f51 Add support for calls to dependent names within templates, e.g.,
template<typename T> void f(T x) {
    g(x); // g is a dependent name, so don't even bother to look it up
    g(); // error: g is not a dependent name
  }

Note that when we see "g(", we build a CXXDependentNameExpr. However,
if none of the call arguments are type-dependent, we will force the
resolution of the name "g" and replace the CXXDependentNameExpr with
its result.

GCC actually produces a nice error message when you make this
mistake, and even offers to compile your code with -fpermissive. I'll
do the former next, but I don't plan to do the latter.

llvm-svn: 60618
2008-12-06 00:22:45 +00:00
Sebastian Redl 538787f571 Add better comments to ::new parsing. Thanks to Doug for the review.
llvm-svn: 60423
2008-12-02 17:10:24 +00:00
Sebastian Redl db36b9b962 Make the parser handle ::new and ::delete correctly.
llvm-svn: 60421
2008-12-02 16:35:44 +00:00
Douglas Gregor 3be4b122d3 Implement the GNU __null extension
llvm-svn: 60235
2008-11-29 04:51:27 +00:00
Argyrios Kyrtzidis 0c4162a659 Add some comments.
llvm-svn: 60119
2008-11-26 21:51:07 +00:00
Sebastian Redl 511ed55524 Use RAII objects to ensure proper destruction of expression and statement AST nodes in the parser in most cases, even on error.
llvm-svn: 60057
2008-11-25 22:21:31 +00:00
Chris Lattner 03c4041cb5 make the 'to match this' diagnostic a note.
llvm-svn: 59921
2008-11-23 23:17:07 +00:00
Chris Lattner e3d20d9545 Convert IdentifierInfo's to be printed the same as DeclarationNames
with implicit quotes around them.  This has a bunch of follow-on 
effects and requires tweaking to a whole lot of code.  This causes
a regression in two tests (xfailed) by causing it to emit things like:

  Line 10: duplicate interface declaration for category 'MyClass1' ('Category1')

instead of:

  Line 10: duplicate interface declaration for category 'MyClass1(Category1)'

I will fix this in a follow-up commit.

As part of this, I had to start switching stuff to use ->getDeclName() instead
of Decl::getName() for consistency.  This is good, but I was planning to do this
as an independent patch.  There will be several follow-on patches
to clean up some of the mess, but this patch is already too big.

llvm-svn: 59917
2008-11-23 21:45:46 +00:00
Sebastian Redl bd150f431e Implementation of new and delete parsing and sema.
This version uses VLAs to represent arrays. I'll try an alternative way next, but I want this safe first.

llvm-svn: 59835
2008-11-21 19:14:01 +00:00
Douglas Gregor 40412acc02 Support overloading of the subscript operator[], including support for
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.

llvm-svn: 59643
2008-11-19 17:17:41 +00:00
Steve Naroff 9e4ac111f0 Fix <rdar://problem/6150376> [sema] crash on invalid message send.
The core fix in Sema::ActOnClassMessage(). All the other changes have to do with passing down the SourceLocation for the receiver (to properly position the cursor when producing an error diagnostic).

llvm-svn: 59639
2008-11-19 15:54:23 +00:00
Douglas Gregor d08452f60a Added operator overloading for unary operators, post-increment, and
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.

llvm-svn: 59638
2008-11-19 15:42:04 +00:00
Chris Lattner ebad6a220f remove uses of IdentifierInfo::getName()
llvm-svn: 59603
2008-11-19 07:37:42 +00:00
Chris Lattner 6d29c10564 Change a couple of the Parser::Diag methods to return DiagnosticInfo
and let the clients push whatever they want into the DiagnosticInfo
instead of hard coding a few forms.  Also switch various clients to
use Diag(Tok, ...) instead of Diag(Tok.getLocation(), ...) as the
canonical form to simplify the code a bit.

llvm-svn: 59509
2008-11-18 07:48:38 +00:00
Sebastian Redl 6f28289aca Introduce a single AST node SizeOfAlignOfExpr for all sizeof and alignof expressions, both of values and types.
llvm-svn: 59057
2008-11-11 17:56:53 +00:00
Sebastian Redl c470476420 Implement C++ 'typeid' parsing and sema.
llvm-svn: 59042
2008-11-11 11:37:55 +00:00
Argyrios Kyrtzidis 32a0379575 Implement support for C++ nested-name-specifiers ('foo::bar::x') in the Parser side.
No Sema functionality change, just the signatures of the Action/Sema methods.

llvm-svn: 58913
2008-11-08 16:45:02 +00:00
Douglas Gregor 7d5fc7e28b Initial, rudimentary implementation of operator overloading for binary
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
2008-11-06 23:29:22 +00:00
Douglas Gregor 11d0c4c098 Parsing, ASTs, and semantic analysis for the declaration of overloaded
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
2008-11-06 22:13:31 +00:00
Douglas Gregor d7fc872d5c Add the remaining C++0x keywords
llvm-svn: 58802
2008-11-06 15:17:27 +00:00
Argyrios Kyrtzidis 22c40fa285 -Add support for cv-qualifiers after function declarators.
-Add withConst/withVolatile/withRestrict methods to QualType class, that return the QualType plus the respective qualifier.

llvm-svn: 58120
2008-10-24 21:46:40 +00:00
Chris Lattner f02ef3e6d4 implement a couple fixme's by implementing __extension__ properly.
llvm-svn: 57806
2008-10-20 06:45:43 +00:00
Steve Naroff 1d95e5a531 Final phase of converting BlockDecls over to DeclContext. This is unfortunately a largish/complex diff, however it was necessry to pass all the current block tests.
llvm-svn: 57337
2008-10-10 01:28:17 +00:00
Argyrios Kyrtzidis 2b1ef227f5 Handle ambiguities between expressions and type-ids that occur inside parentheses, e.g.:
sizeof(int()) -> "int()" is type-id
sizeof(int()+1) -> "int()+1" is expression.

llvm-svn: 57131
2008-10-05 19:56:22 +00:00
Steve Naroff 7a147c6a3c Remove support for BlockExprExpr. For example...
^(expression) or ^(int arg1, float arg2)(expression)
...is no longer supported. 
All block literals now require a compound statement.

llvm-svn: 56257
2008-09-16 23:11:46 +00:00
Steve Naroff 0ac012835f Add parser/action support for block literal expressions.
Parser support for blocks is almost complete...just need to add support for the __block() storage class qualifier.

llvm-svn: 55495
2008-08-28 19:20:44 +00:00
Argyrios Kyrtzidis 857fcc2f8e Add support for C++'s "type-specifier ( expression-list )" expression:
-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
2008-08-22 15:38:55 +00:00
Eli Friedman 002ad1274b Fix a minor crash-on-invalid.
llvm-svn: 55082
2008-08-20 22:07:34 +00:00
Argyrios Kyrtzidis 22fc2665e6 "Remove the 'else' since the code is fallthrough after it." - suggestion by Chris.
llvm-svn: 54952
2008-08-18 22:49:40 +00:00
Argyrios Kyrtzidis 69af9eebd7 Put (argument)-expression-list parsing in a separate function so that it can be re-used.
llvm-svn: 54851
2008-08-16 20:03:01 +00:00
Argyrios Kyrtzidis 16d63a727e C++ casts, (static_cast. dynamic_cast, etc.) can have postfix-expression pieces.
llvm-svn: 54850
2008-08-16 19:45:32 +00:00
Argyrios Kyrtzidis 37779ade44 Move handling of postfix-expression suffixes out of ParseCXXThis and into ParseCastExpression.
No functionality change, this follows the convention of how postfix-expressions are handled.

llvm-svn: 54849
2008-08-16 19:34:46 +00:00
Chris Lattner 6307f19726 rename PreDefinedExpr -> PredefinedExpr
llvm-svn: 54605
2008-08-10 01:53:14 +00:00
Argyrios Kyrtzidis 16c04102ed Add 'this' in the comments of Parser::ParseCastExpression to indicate that it is handled.
llvm-svn: 53665
2008-07-16 07:23:27 +00:00
Argyrios Kyrtzidis 832e898803 Simplify the parser a bit by looking at the next token without consuming it (by Preprocessor::LookNext):
-Remove ParseExpressionWithLeadingIdentifier and ParseAssignmentExprWithLeadingIdentifier.
-Separate ParseLabeledStatement from ParseIdentifierStatement.

llvm-svn: 53376
2008-07-09 22:53:07 +00:00
Argyrios Kyrtzidis 7bbb20e338 Add parsing support for C++ classes.
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
2008-06-24 22:12:16 +00:00
Chris Lattner fd2fe8270e handle the full assignment-expression grammar when using an
objc message send in an initializer expression.

llvm-svn: 51882
2008-06-02 21:31:07 +00:00
Chris Lattner 2fdcddd78d Don't call into objc front-end when not parsing objc code. This avoids
crashes because objc types aren't set up right.

llvm-svn: 50884
2008-05-09 05:28:21 +00:00
Chris Lattner 521ff2b430 Use token lookahead to simplify some code that is rarely executed.
Since it is rare, the cost is not significant and we enjoy the 
simplification.

llvm-svn: 49263
2008-04-06 05:26:30 +00:00
Chris Lattner 7a51313d8a Make a major restructuring of the clang tree: introduce a top-level
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
2008-03-15 23:59:48 +00:00