Method nextobject

pattern/web/pdf/psparser.py:532–592

Yields a list of objects. Returns keywords, literals, strings, numbers, arrays and dictionaries. Arrays and dictionaries are represented as Python lists and dictionaries.

(self)

        return

    def nextobject(self):
        """Yields a list of objects.

        Returns keywords, literals, strings, numbers, arrays and dictionaries.
        Arrays and dictionaries are represented as Python lists and dictionaries.
        """
        while not self.results:
            (pos, token) = self.nexttoken()
            #print (pos,token), (self.curtype, self.curstack)
            if (isinstance(token, int) or
                isinstance(token, float) or
                isinstance(token, bool) or
                isinstance(token, str) or
                isinstance(token, PSLiteral)):
                # normal token
                self.push((pos, token))
            elif token == KEYWORD_ARRAY_BEGIN:
                # begin array
                self.start_type(pos, 'a')
            elif token == KEYWORD_ARRAY_END:
                # end array
                try:
                    self.push(self.end_type('a'))
                except PSTypeError:
                    if STRICT: raise
            elif token == KEYWORD_DICT_BEGIN:
                # begin dictionary
                self.start_type(pos, 'd')
            elif token == KEYWORD_DICT_END:
                # end dictionary
                try:
                    (pos, objs) = self.end_type('d')
                    if len(objs) % 2 != 0:
                        raise PSSyntaxError('Invalid dictionary construct: %r' % objs)
                    # construct a Python dictionary.
                    d = dict( (literal_name(k), v) for (k,v) in choplist(2, objs) if v is not None )
                    self.push((pos, d))
                except PSTypeError:
                    if STRICT: raise
            elif token == KEYWORD_PROC_BEGIN:
                # begin proc
                self.start_type(pos, 'p')
            elif token == KEYWORD_PROC_END:
                # end proc
                try:
                    self.push(self.end_type('p'))
                except PSTypeError:
                    if STRICT: raise
            else:
                if 2 <= self.debug:
                    print >>sys.stderr, 'do_keyword: pos=%r, token=%r, stack=%r' % \
                          (pos, token, self.curstack)
                self.do_keyword(pos, token)
            if self.context:
                continue
            else:
                self.flush()
        obj = self.results.pop(0)