Class Each

source code

   object --+        
            |        
ParserElement --+    
                |    
  ParseExpression --+
                    |
                   Each

Requires all given ParseExpressions to be found, but in any order. Expressions may be separated by whitespace. May be constructed using the '&' operator.

Example:

   color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
   shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
   integer = Word(nums)
   shape_attr = "shape:" + shape_type("shape")
   posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
   color_attr = "color:" + color("color")
   size_attr = "size:" + integer("size")

   # use Each (using operator '&') to accept attributes in any order 
   # (shape and posn are required, color and size are optional)
   shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)

   shape_spec.runTests('''
       shape: SQUARE color: BLACK posn: 100, 120
       shape: CIRCLE size: 50 color: BLUE posn: 50,80
       color:GREEN size:20 shape:TRIANGLE posn:20,40
       '''
       )

prints:

   shape: SQUARE color: BLACK posn: 100, 120
   ['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
   - color: BLACK
   - posn: ['100', ',', '120']
     - x: 100
     - y: 120
   - shape: SQUARE


   shape: CIRCLE size: 50 color: BLUE posn: 50,80
   ['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
   - color: BLUE
   - posn: ['50', ',', '80']
     - x: 50
     - y: 80
   - shape: CIRCLE
   - size: 50


   color: GREEN size: 20 shape: TRIANGLE posn: 20,40
   ['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
   - color: GREEN
   - posn: ['20', ',', '40']
     - x: 20
     - y: 40
   - shape: TRIANGLE
   - size: 20