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The new and cleaner foldingIndent in the block user data will
make it easier to support other kinds of indentation for various
other programming languages (like Python).

The Parentheses, TextBlockUserData and TextEditDocumentLayout classes
and their member function implementations were spread around the
BaseTextEditor class. Moving them to their own file to make the code a
bit better organized.

Reviewed-by: mae

It is not considered a token by the C++ tokenizer, and was hence
considered to be trailing whitespace. Use the highightLine method to
make sure that any non-whitespace characters in this "trailing
whitespace" are not highlighted as such.

Task-number: QTCREATORBUG-987

This reverts commit 2a59d2ae.

Because apparently, while designing the Objective-C language, somebody
thought it was a world-class idea to allow any white-space between the
'@' character and the subsequent keyword. With this fix, we now
correctly parse:
    @  dynamic
and:
    @
      selector
and:
    @"foo"
     "bar"
    @"mooze"
(This last one is 1 single string split over multiple lines.)
Wonderful, isn't it?

What we (and Clang) do not support, but what GCC supports is something
like:
   @"foo"@@  "bar"  @"mooze"  @@
which is equivalent to @"foobarmooze".

When encountering a line that hasn't been highlighted yet, we need to
abort the optimization for changing brace depth.

Done with Roberto Raggi and mae.

Syntax highlighting for Objective-C identifiers (super, self, nil, Nil, _cmd, SEL, IMP, BOOL, YES, NO, id).

Mark the white spaces in literals, comments and preprocessor directives with the visual space format.

done with Erik Verbruggen

Introduced T_CPP_COMMENT and T_CPP_DOXY_COMMENT to handle C++-style comments and improved CPPEditor::isInComment to handle the newly introduced tokens.

As side effect,this change should fix the regression we introduced in the "automagically" quote/brace insertion.

We now exclude brace in ifdefed out sections when calculating,
whether or not the braces match. This requires adjust the brace
levels whenever sections get ifdef'd out or ifdef'd in again.

Done with mae.

Reviewed-by: Trust Me

Conflicts:

	src/libs/cplusplus/CppBindings.cpp
	src/libs/cplusplus/CppBindings.h
	src/libs/cplusplus/FastPreprocessor.cpp
	src/libs/cplusplus/FastPreprocessor.h
	src/plugins/cpptools/cppcurrentdocumentfilter.cpp
	src/plugins/cpptools/cppcurrentdocumentfilter.h
	src/plugins/cpptools/cppsemanticsearch.cpp
	src/plugins/cpptools/cppsemanticsearch.h
	src/plugins/duieditor/parser/qmljs.g
	src/plugins/duieditor/parser/qmljsast.cpp
	src/plugins/duieditor/parser/qmljsast_p.h
	src/plugins/duieditor/parser/qmljsastfwd_p.h
	src/plugins/duieditor/parser/qmljsastvisitor.cpp
	src/plugins/duieditor/parser/qmljsastvisitor_p.h
	src/plugins/duieditor/parser/qmljsengine_p.cpp
	src/plugins/duieditor/parser/qmljsengine_p.h
	src/plugins/duieditor/parser/qmljsgrammar.cpp
	src/plugins/duieditor/parser/qmljsgrammar_p.h
	src/plugins/duieditor/parser/qmljslexer.cpp
	src/plugins/duieditor/parser/qmljslexer_p.h
	src/plugins/duieditor/parser/qmljsmemorypool_p.h
	src/plugins/duieditor/parser/qmljsnodepool_p.h
	src/plugins/duieditor/parser/qmljsparser.cpp
	src/plugins/duieditor/parser/qmljsparser_p.h
	src/plugins/duieditor/parser/qmljsprettypretty.cpp
	src/plugins/duieditor/parser/qmljsprettypretty_p.h
	src/plugins/duieditor/rewriter/rewriter.cpp
	src/plugins/duieditor/rewriter/rewriter_p.h
	src/plugins/duieditor/rewriter/textwriter.cpp
	src/plugins/duieditor/rewriter/textwriter_p.h
	src/shared/cplusplus/ASTClone.cpp
	tests/manual/cplusplus/main.cpp

Reviewed-by: Trust Me

Lowercase is the more prevalent style in this plugin and CppTools.
Unfortunately CPPEditor can't be named CppEditor cause of the CppEditor
namespace.