ROOT (token: short_text [lag_newlines/spaces] {pos_id})
 ¦--expr: call( [0/0] {1}                              
 ¦   ¦--expr: call [0/0] {3}                           
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: call [0/0] {2}       
 ¦   ¦--'(': ( [0/2] {4}                               
 ¦   ¦--expr: 2 [1/0] {6}                              
 ¦   ¦   °--NUM_CONST: 2 [0/0] {5}                     
 ¦   ¦--',': , [0/2] {7}                               
 ¦   ¦--expr: 3 [1/0] {9}                              
 ¦   ¦   °--NUM_CONST: 3 [0/0] {8}                     
 ¦   °--')': ) [1/0] {10}                              
 ¦--expr: switc [2/0] {11}                             
 ¦   ¦--expr: switc [0/0] {13}                         
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: switc [0/0] {12}     
 ¦   ¦--'(': ( [0/0] {14}                              
 ¦   ¦--expr: abc [0/0] {16}                           
 ¦   ¦   °--SYMBOL: abc [0/0] {15}                     
 ¦   ¦--',': , [0/2] {17}                              
 ¦   ¦--expr: wei9 [1/0] {19}                          
 ¦   ¦   °--SYMBOL: wei9 [0/0] {18}                    
 ¦   °--')': ) [1/0] {20}                              
 ¦--expr: switc [2/0] {21}                             
 ¦   ¦--expr: switc [0/0] {23}                         
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: switc [0/0] {22}     
 ¦   ¦--'(': ( [0/0] {24}                              
 ¦   ¦--expr: abc [0/0] {26}                           
 ¦   ¦   °--SYMBOL: abc [0/0] {25}                     
 ¦   ¦--',': , [0/2] {27}                              
 ¦   ¦--expr: wei9 [1/0] {29}                          
 ¦   ¦   °--SYMBOL: wei9 [0/0] {28}                    
 ¦   °--')': ) [1/0] {30}                              
 ¦--expr: if_el [2/0] {31}                             
 ¦   ¦--expr: if_el [0/0] {33}                         
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: if_el [0/0] {32}     
 ¦   ¦--'(': ( [0/0] {34}                              
 ¦   ¦--expr: a [0/0] {36}                             
 ¦   ¦   °--SYMBOL: a [0/0] {35}                       
 ¦   ¦--',': , [0/2] {37}                              
 ¦   ¦--expr: c [1/0] {39}                             
 ¦   ¦   °--SYMBOL: c [0/0] {38}                       
 ¦   ¦--',': , [0/1] {40}                              
 ¦   ¦--expr: v [0/0] {42}                             
 ¦   ¦   °--SYMBOL: v [0/0] {41}                       
 ¦   °--')': ) [1/0] {43}                              
 °--expr: ifels [2/0] {44}                             
     ¦--expr: ifels [0/0] {46}                         
     ¦   °--SYMBOL_FUNCTION_CALL: ifels [0/0] {45}     
     ¦--'(': ( [0/0] {47}                              
     ¦--expr: x [0/0] {49}                             
     ¦   °--SYMBOL: x [0/0] {48}                       
     ¦--',': , [0/2] {50}                              
     ¦--expr: y [1/0] {52}                             
     ¦   °--SYMBOL: y [0/0] {51}                       
     ¦--',': , [0/1] {53}                              
     ¦--expr: z [0/0] {55}                             
     ¦   °--SYMBOL: z [0/0] {54}                       
     °--')': ) [1/0] {56}                              
