C++: Fix cplusplus-keywordgen to generate Keywords.cpp

Fix kewordgen to generate current Keywords.cpp with minimal diff,
but also to be compatible with old usage and kwgen files.

Add new parameters:
%no-namespace-for-tokens - not use namespace for tokens
%pre-check-argument - set type and name of additional variable to use
%function-name - name of a function ("classify" by default)
%pre-check - name of a variable to check for a keyword (i.e. cxxEnabled)
Now "%%" is also used to end and restart keywords parsing to be able to
generate additional keywords for classifyOperator()

Automatically add checks for LanguageFeatures to generated code
Pass input and output files with command line arguments, print usage

Update Keywords.kwgen to include all keywords currently used

Add missing aliases to Token.h

Change-Id: I6cc84e150e0d797277204032fc05ce9cfbd01f58
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/libs/3rdparty/cplusplus/Keywords.kwgen

@@ -1,55 +1,99 @@
+// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
 
 #include "Lexer.h"
 #include "Token.h"
 
+namespace CPlusPlus {
+
 %token-prefix=T_
 %toupper
 %no-enums
 %namespace=Lexer
+%no-namespace-for-tokens
+%pre-check-argument=LanguageFeatures features
+%function-name=classify
 
 %%
 __asm
 __asm__
 __attribute
 __attribute__
+__alignof__
 __const
 __const__
 __inline
 __inline__
+__thread
 __typeof
 __typeof__
 __volatile
 __volatile__
 asm
-auto
-bool
 break
 case
-catch
 char
-class
 const
-const_cast
 continue
 default
-delete
 do
 double
-dynamic_cast
 else
 enum
-explicit
-export
 extern
-false
 float
 for
-friend
 goto
 if
 inline
 int
 long
+register
+return
+short
+signed
+sizeof
+static
+struct
+switch
+typedef
+typeof
+union
+unsigned
+void
+volatile
+while
+
+%pre-check=features.cxxEnabled
+__decltype
+auto
+bool
+catch
+class
+const_cast
+delete
+dynamic_cast
+explicit
+export
+false
+friend
 mutable
 namespace
 new
@@ -57,30 +101,79 @@ operator
 private
 protected
 public
-register
 reinterpret_cast
-return
-short
-signed
-sizeof
-static
 static_cast
-struct
-switch
 template
 this
 throw
 true
 try
-typedef
 typeid
 typename
-typeof
-union
-unsigned
 using
 virtual
-void
-volatile
 wchar_t
-while
+
+%pre-check=features.cxx11Enabled
+alignas
+alignof
+char16_t
+char32_t
+constexpr
+decltype
+noexcept
+nullptr
+static_assert
+thread_local
+
+%pre-check=features.qtKeywordsEnabled
+emit
+foreach
+Q_EMIT
+Q_SLOT
+SIGNAL
+signals
+slots
+
+%pre-check=features.qtMocRunEnabled
+Q_Q
+Q_D
+
+%pre-check=features.qtEnabled
+Q_DECLARE_INTERFACE
+Q_ENUMS
+Q_FLAGS
+Q_FOREACH
+Q_GADGET
+Q_INVOKABLE
+Q_INTERFACES
+Q_OBJECT
+Q_OVERRIDE
+Q_PRIVATE_PROPERTY
+Q_PRIVATE_SLOT
+Q_PROPERTY
+Q_SIGNAL
+Q_SIGNALS
+Q_SLOTS
+SLOT
+
+%%
+
+%pre-check-argument=
+%function-name=classifyOperator
+
+%%
+or
+and
+not
+xor
+bitor
+compl
+or_eq
+and_eq
+bitand
+not_eq
+xor_eq
+%%
+
+} // namespace CPlusPlus