1 # Type printer commands. 2 # Copyright (C) 2010-2016 Free Software Foundation, Inc. 3 4 # This program is free software; you can redistribute it and/or modify 5 # it under the terms of the GNU General Public License as published by 6 # the Free Software Foundation; either version 3 of the License, or 7 # (at your option) any later version. 8 # 9 # This program is distributed in the hope that it will be useful, 10 # but WITHOUT ANY WARRANTY; without even the implied warranty of 11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 # GNU General Public License for more details. 13 # 14 # You should have received a copy of the GNU General Public License 15 # along with this program. If not, see <http://www.gnu.org/licenses/>. 16 17 import copy 18 import gdb 19 20 """GDB commands for working with type-printers.""" 21 22 class InfoTypePrinter(gdb.Command): 23 """GDB command to list all registered type-printers. 24 25 Usage: info type-printers 26 """ 27 28 def __init__ (self): 29 super(InfoTypePrinter, self).__init__("info type-printers", 30 gdb.COMMAND_DATA) 31 32 def list_type_printers(self, type_printers): 33 """Print a list of type printers.""" 34 # A potential enhancement is to provide an option to list printers in 35 # "lookup order" (i.e. unsorted). 36 sorted_type_printers = sorted (copy.copy(type_printers), 37 key = lambda x: x.name) 38 for printer in sorted_type_printers: 39 if printer.enabled: 40 enabled = '' 41 else: 42 enabled = " [disabled]" 43 print (" %s%s" % (printer.name, enabled)) 44 45 def invoke(self, arg, from_tty): 46 """GDB calls this to perform the command.""" 47 sep = '' 48 for objfile in gdb.objfiles(): 49 if objfile.type_printers: 50 print ("%sType printers for %s:" % (sep, objfile.filename)) 51 self.list_type_printers(objfile.type_printers) 52 sep = '\n' 53 if gdb.current_progspace().type_printers: 54 print ("%sType printers for program space:" % sep) 55 self.list_type_printers(gdb.current_progspace().type_printers) 56 sep = '\n' 57 if gdb.type_printers: 58 print ("%sGlobal type printers:" % sep) 59 self.list_type_printers(gdb.type_printers) 60 61 class _EnableOrDisableCommand(gdb.Command): 62 def __init__(self, setting, name): 63 super(_EnableOrDisableCommand, self).__init__(name, gdb.COMMAND_DATA) 64 self.setting = setting 65 66 def set_some(self, name, printers): 67 result = False 68 for p in printers: 69 if name == p.name: 70 p.enabled = self.setting 71 result = True 72 return result 73 74 def invoke(self, arg, from_tty): 75 """GDB calls this to perform the command.""" 76 for name in arg.split(): 77 ok = False 78 for objfile in gdb.objfiles(): 79 if self.set_some(name, objfile.type_printers): 80 ok = True 81 if self.set_some(name, gdb.current_progspace().type_printers): 82 ok = True 83 if self.set_some(name, gdb.type_printers): 84 ok = True 85 if not ok: 86 print ("No type printer named '%s'" % name) 87 88 def add_some(self, result, word, printers): 89 for p in printers: 90 if p.name.startswith(word): 91 result.append(p.name) 92 93 def complete(self, text, word): 94 result = [] 95 for objfile in gdb.objfiles(): 96 self.add_some(result, word, objfile.type_printers) 97 self.add_some(result, word, gdb.current_progspace().type_printers) 98 self.add_some(result, word, gdb.type_printers) 99 return result 100 101 class EnableTypePrinter(_EnableOrDisableCommand): 102 """GDB command to enable the specified type printer. 103 104 Usage: enable type-printer NAME 105 106 NAME is the name of the type-printer. 107 """ 108 109 def __init__(self): 110 super(EnableTypePrinter, self).__init__(True, "enable type-printer") 111 112 class DisableTypePrinter(_EnableOrDisableCommand): 113 """GDB command to disable the specified type-printer. 114 115 Usage: disable type-printer NAME 116 117 NAME is the name of the type-printer. 118 """ 119 120 def __init__(self): 121 super(DisableTypePrinter, self).__init__(False, "disable type-printer") 122 123 InfoTypePrinter() 124 EnableTypePrinter() 125 DisableTypePrinter() 126
