D6643: Add return typehint support for PHP language

[Matthijs Tijink]

mtijink created this revision.
mtijink added a project: KDevelop.
Restricted Application added a subscriber: kdevelop-devel.

REVISION SUMMARY
  This diff adds support for php return typehints (e.g. `function foo(): string`) to the parser. Nothing is done yet to use this in the TypeBuilder, that will come later.

TEST PLAN
  The newly added test checks if the return typehint is correctly tokenized. Parsing itself is not tested, but the old tests work (so no regressions) and opening files with return typehints now works without parse errors. Tests will be added after using the return typehints in the TypeBuilder.

REPOSITORY
  R52 KDevelop: PHP Support

REVISION DETAIL
  https://phabricator.kde.org/D6643

AFFECTED FILES
  completion/context.cpp
  parser/php.g
  parser/phplexer.cpp
  parser/test/lexertest.cpp
  parser/test/lexertest.h

To: mtijink, #kdevelop
Cc: kdevelop-devel, #kdevelop, geetamc, Pilzschaf, akshaydeo, surgenight, arrowdodger
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