demjava -code -outputdir ./gen program
Parsing program.cd...
Building hashtable of classes...
Expanding parameterized classes...
Converting repetition classes...
Filling in part names...
Setting inheritance links...
Error: class S_Temp cannot have more than one parent: Box_Composite_Decorator (previous parent: Box_Composite)
Error: class S_Temp cannot have more than one parent: S_Decorator (previous parent: Box_Composite_Decorator)
Error: class S_Decor cannot have more than one parent: S_Decorator (previous parent: Box_Composite_Decorator)
Error: class S_Temp cannot have more than one parent: S_Composite (previous parent: S_Decorator)
Error: class S_Compound cannot have more than one parent: S_Composite (previous parent: Box_Composite)
Parsing program.beh...
Gathering methods...
Expanding traversals...
  Expanding allShapes...
Generating Java code to ./gen...
Done.
demjava -grammar -outputdir ./gen program
Parsing program.cd...
Building hashtable of classes...
Expanding parameterized classes...
Converting repetition classes...
Filling in part names...
Setting inheritance links...
Error: class S_Temp cannot have more than one parent: Box_Composite_Decorator (previous parent: Box_Composite)
Error: class S_Temp cannot have more than one parent: S_Decorator (previous parent: Box_Composite_Decorator)
Error: class S_Decor cannot have more than one parent: S_Decorator (previous parent: Box_Composite_Decorator)
Error: class S_Temp cannot have more than one parent: S_Composite (previous parent: S_Decorator)
Error: class S_Compound cannot have more than one parent: S_Composite (previous parent: Box_Composite)
Generating grammar to ./gen/program.jack...
Done.
(cd ./gen; jack program.jack)
Jack Version 0.5.  Copyright (c) 1996 Sun Microsystems Inc.
(type "jack" with no arguments for help)

Reading from file program.jack . . .
File "ParseError.java" does not exist.  Will create one.
File "Token.java" does not exist.  Will create one.
Error: Line 401, Column 3: Expansion within "(...)?" can be matched by empty string.
Error: Line 434, Column 3: Expansion within "(...)?" can be matched by empty string.
Error: Line 427, Column 1: Left recursion detected: "_Nonempty_S_Composite_List... --> _Nonempty_S_Composite_List..."
Detected 3 errors and 0 warnings.
make: *** [gen/Parser.java] Error 1