---context:global   # following code refers to global config

assign   global_false = false
assign   global_true = true
assign   global_and = and false global_true

assign   global_inject1 = 5
assign   global_inject2 = 13
assign   global_inject2 = add global_inject2 3

assign global_or = or ( or global_true global_false ) ( or global_false global_true )
assign global_and = and ( and global_true true ) false

---context:way   # following code refers to way-tags

assign v = highway=primary
assign w = surface=asphalt

# test constant or/and
assign costfactor =
  add multiply 1 or 1 1
  add multiply 2 or 1 0
  add multiply 4 or 0 1
  add multiply 8 or 0 0
  add multiply 16 and 1 1
  add multiply 32 and 1 1
  add multiply 64 and 1 1
      multiply 128 and 1 1
  
# test variable or
assign turncost =
  add multiply 1 or v 1
  add multiply 2 or v 0
  add multiply 4 or 0 v
  add multiply 8 or 1 v
      multiply 16 or v w

# test variable and
assign uphillcostfactor =
  add multiply 1 and v 1
  add multiply 2 and v 0
  add multiply 4 and 0 v
  add multiply 8 and 1 v
      multiply 16 and v w

# test add
assign downhillcostfactor =
  add multiply 1 add 1 1
  add multiply 2 add 1 0
  add multiply 4 add 0 1
  add multiply 8 add 0 0
  add multiply 16 add v 1
  add multiply 32 add v 0
  add multiply 64 add 1 v
      multiply 128 add 0 v

# test max
assign initialcost =
  add multiply 1 max 1 2
  add multiply 2 max multiply 2 v 1
  add multiply 4 max 1 multiply 2 v
      multiply 8 max multiply 2 v v

# test switch
assign initialclassifier =
  add multiply 1 switch 1 1 0
  add multiply 2 switch 0 1 0
  add multiply 4 switch 1 0 1
  add multiply 8 switch 0 0 1
  add multiply 16 switch v 1 1
  add multiply 32 switch v 0 1
  add multiply 64 switch v 1 0
  add multiply 128 switch v 0 1
      multiply 256 switch 1 v w

# test global calcs
assign priorityclassifier =
  add multiply 1 global_false
  add multiply 2 global_true
  add multiply 4 global_and
  add multiply 8 global_inject1
  add multiply 16 global_inject2
  add multiply 32 global_or
      multiply 64 global_and

---context:node  # following code refers to node tags

assign initialcost = 1