================================================================================
Simple connection
================================================================================
foo--bar
biz->baz
biz<->baz
biz<-baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
)

================================================================================
Formatted connection
================================================================================
foo -- bar
biz -> baz
biz <-> baz
biz <- baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
)


================================================================================
Complex identifier connection
================================================================================
Foo Bar -- Biz Baz
-Bar-Foo- <- -Baz-Biz-

--------------------------------------------------------------------------------

(source_file
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
)

================================================================================
Inline connection
================================================================================
foo--bar->biz->baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (identifier)
    (arrow)
    (identifier)
    (arrow)
    (identifier)
    (arrow)
    (identifier)
  )
)

================================================================================
Many connections inline
================================================================================
foo--bar;biz->baz

--------------------------------------------------------------------------------

(source_file
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
  )
)

================================================================================
Labeled connections
================================================================================
foo--bar: Question?
bar -> baz: Yes

--------------------------------------------------------------------------------

(source_file
  (connection
    (identifier)
    (arrow)
    (identifier)
    (label)
  )
  (connection
    (identifier)
    (arrow)
    (identifier)
    (label)
  )
)