cf/symbol-version.py

   1 #
   2 # Copyright (c) 2008 Kungliga Tekniska Högskolan
   3 # (Royal Institute of Technology, Stockholm, Sweden).
   4 # All rights reserved.
   5 #
   6 # Redistribution and use in source and binary forms, with or without
   7 # modification, are permitted provided that the following conditions
   8 # are met:
   9 #
  10 # 1. Redistributions of source code must retain the above copyright
  11 #    notice, this list of conditions and the following disclaimer.
  12 #
  13 # 2. Redistributions in binary form must reproduce the above copyright
  14 #    notice, this list of conditions and the following disclaimer in the
  15 #    documentation and/or other materials provided with the distribution.
  16 #
  17 # 3. Neither the name of the Institute nor the names of its contributors
  18 #    may be used to endorse or promote products derived from this software
  19 #    without specific prior written permission.
  20 #
  21 # THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24 # ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33
  34 import sys
  35
  36 tokens = [ 'SYMBOL' ]
  37 literals = ['{','}',';', ':']
  38
  39 t_SYMBOL    = r'[a-zA-Z_][a-zA-Z0-9_\.]*'
  40 t_ignore = " \t\n"
  41
  42 def t_error(t):
  43     print "Illegal character '%s'" % t.value[0]
  44     t.lexer.skip(1)
  45
  46 import ply.lex as lex
  47 lex.lex()
  48
  49 namespace = "global"
  50 symbols = []
  51
  52 def p_syms(p):
  53     'syms : SYMBOL "{" elements "}"'
  54     print "# %s" % p[1]
  55
  56 def p_elements(p):
  57     '''elements : element
  58              | element elements'''
  59
  60 def p_element(p):
  61     '''element : SYMBOL ":"
  62                | SYMBOL ";"'''
  63     global namespace
  64     if p[2] == ':':
  65         namespace = p[1]
  66     else:
  67         symbols.append([namespace, p[1]])
  68
  69 def p_error(p):
  70     if p:
  71         print "Syntax error at '%s'" % p.value
  72     else:
  73         print "Syntax error at EOF"
  74
  75 import ply.yacc as yacc
  76 yacc.yacc()
  77
  78 lines = sys.stdin.readlines()
  79
  80 for line in lines:
  81     yacc.parse(line)
  82
  83 for symbol in symbols:
  84     if symbol[0] == "global":
  85         print "%s" % symbol[1]