Exemplo n.º 1
0
 def __init__(self, domain, assignment=None):
     dict.__init__(self)
     self.domain = domain
     if assignment:
         for var in assignment.keys():
             val = assignment[var]
             assert val in self.domain,\
                    "'%s' is not in the domain: %s" % (val, self.domain)
             assert logic.is_indvar(var),\
                    "Wrong format for an Individual Variable: '%s'" % var
         self.update(assignment)
     self._addvariant()
Exemplo n.º 2
0
 def __init__(self, domain, assignment=None):
     dict.__init__(self)
     self.domain = domain
     if assignment:
         for var in assignment.keys():
             val = assignment[var]
             assert val in self.domain,\
                    "'%s' is not in the domain: %s" % (val, self.domain)
             assert logic.is_indvar(var),\
                    "Wrong format for an Individual Variable: '%s'" % var
         self.update(assignment)
     self._addvariant()
Exemplo n.º 3
0
    def add(self, val, var):
        """
        Add a new variable-value pair to the assignment, and update
        C{self.variant}.

        We write the arguments in the order 'val, var' by analogy with the
        notation 'g[u/x]'.
        """
        assert val in self.domain,\
               "%s is not in the domain %s" % (val, self.domain)
        assert logic.is_indvar(var),\
               "Wrong format for an Individual Variable: '%s'" % var
        self[var] = val
        self._addvariant()
        return self
Exemplo n.º 4
0
 def __init__(self, valuation=None):
     dict.__init__(self)
     if valuation:
         for k in valuation.keys():
             if logic.is_indvar(k):
                 raise Error, "This looks like an individual variable: '%s'" % k
             # Check if the valuation is of the form {'p': True}
             if isinstance(valuation[k], bool):
                 self[k] = valuation[k]
             else:
                 try:
                     cf = CharFun(valuation[k])
                     self[k] = cf
                 except (TypeError, ValueError):
                     self[k] = valuation[k]
Exemplo n.º 5
0
    def add(self, val, var):
        """
        Add a new variable-value pair to the assignment, and update
        C{self.variant}.

        We write the arguments in the order 'val, var' by analogy with the
        notation 'g[u/x]'.
        """
        assert val in self.domain,\
               "%s is not in the domain %s" % (val, self.domain)
        assert logic.is_indvar(var),\
               "Wrong format for an Individual Variable: '%s'" % var
        self[var] = val
        self._addvariant()
        return self
Exemplo n.º 6
0
 def __init__(self, valuation=None):
     dict.__init__(self)
     if valuation:
         for k in valuation.keys():
             if logic.is_indvar(k):
                 raise Error, "This looks like an individual variable: '%s'" % k
             # Check if the valuation is of the form {'p': True}
             if isinstance(valuation[k], bool):
                 self[k] = valuation[k]
             else:
                 try:
                     cf = CharFun(valuation[k])
                     self[k] = cf
                 except (TypeError, ValueError):
                     self[k] = valuation[k]
Exemplo n.º 7
0
 def read(self, seq):
     """
     Parse a list such as  C{[('j', 'b1'), ('girl', set(['g1', 'g2']))]} into a L{Valuation}.
     @rtype: L{Valuation}
     @param seq: A list of tuples of the form (I{constant}, I{relation}), where I{relation} is a set of tuples.
     """
     d = dict(seq)
     for k in d.keys():
         if logic.is_indvar(k):
             raise Error, "This looks like an individual variable: '%s'" % k
         val = d[k]
         if isinstance(val, str):
             pass
         else:
             cf = CharFun()
             cf.read(d[k])
             d[k] = cf
     self.update(d)
Exemplo n.º 8
0
 def read(self, seq):
     """
     Parse a list such as  C{[('j', 'b1'), ('girl', set(['g1', 'g2']))]} into a L{Valuation}.
     @rtype: L{Valuation}
     @param seq: A list of tuples of the form (I{constant}, I{relation}), where I{relation} is a set of tuples.
     """
     d = dict(seq)
     for k in d.keys():
         if logic.is_indvar(k):
             raise Error, "This looks like an individual variable: '%s'" % k
         val = d[k]
         if isinstance(val, str):
             pass
         else:
             cf = CharFun()
             cf.read(d[k])        
             d[k] = cf
     self.update(d)