================================================================================
Declare a shape inside a container
================================================================================
foo.baz
foo.bar.biz

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

(source_file
  (container
    (container_key) (dot)
    (shape (shape_key))
  )
  (container
    (container_key) (dot)
    (container
      (container_key) (dot)
      (shape (shape_key))
    )
  )
)

================================================================================
Use quoted string as keys
================================================================================
'foo'.'baz'

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

(source_file
  (container
    (container_key (string (string_fragment))) (dot)
    (shape (shape_key (string (string_fragment))))
  )
)

================================================================================
Declare container inside a container using block
================================================================================

foo: {
  bar: {
    baz: {
      biz
    }
  }
}

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

(source_file
  (container
    (container_key)
    (colon)
    (block
      (container
        (container_key)
        (colon)
        (block
          (container
            (container_key)
            (colon)
            (block
              (shape (shape_key))
            )
          )
        )
      )
    )
  )
)

================================================================================
Declare labeled container inside a labeled container using block
================================================================================

foo: Foo {
  bar: Bar {
    baz: Baz {
      biz: Biz
    }
  }
}

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

(source_file
  (container
    (container_key)
    (colon)
    (label)
    (block
      (container
        (container_key)
        (colon)
        (label)
        (block
          (container
            (container_key)
            (colon)
            (label)
            (block
              (shape (shape_key) (colon) (label))
            )
          )
        )
      )
    )
  )
)

================================================================================
Declare many shapes inside a container
================================================================================

foo: {
  bar
  biz
  baz
}

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

(source_file
  (container
    (container_key)
    (colon)
    (block
      (shape (shape_key))
      (shape (shape_key))
      (shape (shape_key))
    )
  )
)


================================================================================
Declare a container with complex keys
================================================================================

Foo biz bar: {
  bar biz baz: {
    -biz-baz-Baz-: {
      Helo world
    }
  }
}

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

(source_file
  (container
    (container_key)
    (colon)
    (block
      (container
        (container_key)
        (colon)
        (block
          (container
            (container_key)
            (colon)
            (block
              (shape (shape_key))
            )
          )
        )
      )
    )
  )
)

================================================================================
Declare a container with complex keys and labels
================================================================================

Foo biz bar: Biz biz Bar {
  bar biz baz: baz baz biz {
    -biz-baz-Baz-: Biz buz Baz {
      Helo world
    }
  }
}

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

(source_file
  (container
    (container_key)
    (colon)
    (label)
    (block
      (container
        (container_key)
        (colon)
        (label)
        (block
          (container
            (container_key)
            (colon)
            (label)
            (block
              (shape (shape_key))
            )
          )
        )
      )
    )
  )
)

================================================================================
Declare shapes sparsely in a container
================================================================================

Foo: Baz {

  biz
  
  baz

  bar


}

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

(source_file
  (container
    (container_key)
    (colon)
    (label)
    (block
      (shape (shape_key))
      (shape (shape_key))
      (shape (shape_key))
    )
  )
)

================================================================================
Declare shapes in a container in single-line (Issue #11)
================================================================================
primty: Primitive types {
  Never: {"!"}

  Boolean: {bool}

  Textual: {char; str}
}

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

(source_file
  (container
    (container_key)
    (colon)
    (label)
    (block
      (container
        (container_key)
        (colon)
        (block
          (shape
            (shape_key (string (string_fragment)))
          )
        )
      )
      (container
        (container_key)
        (colon)
        (block
          (shape (shape_key))
        )
      )
      (container
        (container_key)
        (colon)
        (block
          (shape (shape_key))
          (shape (shape_key))
        )
      )
    )
  )
)

================================================================================
Declare a container with a references to the parent container
================================================================================
container: {
  _.foo: baz
}

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

(source_file
  (container
    (container_key)
    (colon)
    (block
      (container
        (container_key (keyword_underscore))
        (dot)
        (shape (shape_key) (colon) (label))
      )
    )
  )
)