def p_program_tail(p):
""" program : statement program """
p[0] = AST.ProgramStatement(p.linespan(0), [p[1]] + p[2].statements)
def p_program_head(p):
""" program : """
p[0] = AST.ProgramStatement(p.linespan(0), [])
def p_program_tail(p):
""" program : statement program """
p[0] = AST.ProgramStatement(p.linespan(0), [p[1]] + p[2].statements)
def p_program_head(p):
""" program : """
p[0] = AST.ProgramStatement(p.linespan(0), [])