#%lvsdb-klayout

# Layout
layout(
 top(empty_subcells)
 unit(1)

 # Layer section
 # This section lists the mask layers (drawing or derived) and their connections.

 # Mask layers
 layer(l1 '1/0')
 layer(l2 '2/0')
 layer(l3 '3/0')
 layer(l4 '254/0')

 # Mask layer connectivity
 connect(l1 l1 l2)
 connect(l2 l1 l2 l3)
 connect(l3 l2 l3 l4)
 connect(l4 l3)

 # Circuit section
 # Circuits are the hierarchical building blocks of the netlist.
 circuit(blockA

  # Circuit boundary
  rect((100 10) (30 80))

  # Nets with their geometries
  net(1 name(A)
   rect(l3 (100 60) (30 30))
   text(l4 A (-10 -10))
  )
  net(2 name(B)
   rect(l3 (100 10) (30 30))
   text(l4 B (-10 -10))
  )

  # Outgoing pins and their connections to nets
  pin(1 name(A))
  pin(2 name(B))

 )
 circuit(blockB

  # Circuit boundary
  rect((100 10) (30 80))

  # Nets with their geometries
  net(1 name(V)
   rect(l3 (100 60) (30 30))
   text(l4 V (-10 -10))
  )
  net(2 name(W)
   rect(l3 (100 10) (30 30))
   text(l4 W (-10 -10))
  )

  # Outgoing pins and their connections to nets
  pin(1 name(V))
  pin(2 name(W))

 )
 circuit(empty_subcells

  # Circuit boundary
  rect((100 10) (340 80))

  # Nets with their geometries
  net(1
   rect(l1 (180 60) (90 30))
   rect(l2 (-160 -20) (90 10))
   rect(l2 (40 -10) (180 10))
  )
  net(2
   rect(l1 (180 10) (90 30))
   rect(l2 (-160 -20) (90 10))
   rect(l2 (40 -10) (180 10))
  )

  # Subcircuits and their connections
  circuit(1 blockB location(0 0)
   pin(0 1)
   pin(1 2)
  )
  circuit(2 blockA location(310 0)
   pin(0 1)
   pin(1 2)
  )

 )
)

# Reference netlist
reference(

 # Circuit section
 # Circuits are the hierarchical building blocks of the netlist.
 circuit(BLOCKA

  # Nets
  net(1 name(A))
  net(2 name(B))

  # Outgoing pins and their connections to nets
  pin(1 name(A))
  pin(2 name(B))

 )
 circuit(BLOCKB

  # Nets
  net(1 name(V))
  net(2 name(W))

  # Outgoing pins and their connections to nets
  pin(1 name(V))
  pin(2 name(W))

 )
 circuit(EMPTY_SUBCELLS

  # Nets
  net(1 name(E))
  net(2 name(F))

  # Subcircuits and their connections
  circuit(1 BLOCKA name('1')
   pin(0 1)
   pin(1 2)
  )
  circuit(2 BLOCKB name('2')
   pin(0 1)
   pin(1 2)
  )

 )
)

# Cross reference
xref(
 circuit(blockA BLOCKA match
  xref(
   net(1 1 match)
   net(2 2 match)
   pin(0 0 match)
   pin(1 1 match)
  )
 )
 circuit(blockB BLOCKB match
  xref(
   net(1 1 match)
   net(2 2 match)
   pin(0 0 match)
   pin(1 1 match)
  )
 )
 circuit(empty_subcells EMPTY_SUBCELLS match
  xref(
   net(1 1 match)
   net(2 2 match)
   circuit(2 1 match)
   circuit(1 2 match)
  )
 )
)