universal-ctags / ctags / 4143

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master: 87%

Pull #1783

travis-ci

C++: introduce "using" role to "namespace" kind

"foo" in "using namespace foo;" was captured as using kind.
However, "foo" is not defined in the statement.
"foo" is referred as a namespace defined somewhere.

Therefore, ctags should not capture "foo" as a definition tag.
Instead, ctags should capture it as a reference tag.

The original code captures "foo" as a definition tag of "using" kind.
This change captures "foo" as a reference tag of "using" role of
"namespace" kind.

  $ cat /tmp/foo.hh
  using namespace std::cout;
  $ ./ctags -o - /tmp/foo.hh
  $ ./ctags -o - --extras=+r /tmp/foo.hh
  std::cout	/tmp/foo.hh	/^using namespace std::cout;$/;"	n
  $ ./ctags -o - --extras=+r --fields=+K /tmp/foo.hh
  std::cout	/tmp/foo.hh	/^using namespace std::cout;$/;"	namespace
  $ ./ctags -o - --extras=+r --fields=+Kr /tmp/foo.hh
  std::cout	/tmp/foo.hh	/^using namespace std::cout;$/;"	namespace	roles:using

  $ ./ctags --list-roles=C++.namespace
  #KIND(L/N)   NAME  ENABLED DESCRIPTION
  n/namespace  using on      specified with "using namespace"

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

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