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# Example using pointers to member functions
from member_pointer import *
def check(what, expected, actual):
if expected != actual:
raise RuntimeError(
"Failed: ", what, " Expected: ", expected, " Actual: ", actual)
# Get the pointers
area_pt = areapt()
perim_pt = perimeterpt()
# Create some objects
s = Square(10)
# Do some calculations
check("Square area ", 100.0, do_op(s, area_pt))
check("Square perim", 40.0, do_op(s, perim_pt))
memberPtr = cvar.areavar
memberPtr = cvar.perimetervar
# Try the variables
check("Square area ", 100.0, do_op(s, cvar.areavar))
check("Square perim", 40.0, do_op(s, cvar.perimetervar))
# Modify one of the variables
cvar.areavar = perim_pt
check("Square perimeter", 40.0, do_op(s, cvar.areavar))
# Try the constants
memberPtr = AREAPT
memberPtr = PERIMPT
memberPtr = NULLPT
check("Square area ", 100.0, do_op(s, AREAPT))
check("Square perim", 40.0, do_op(s, PERIMPT))
check("Add by value", 3, call1(ADD_BY_VALUE, 1, 2))
check("Add by pointer", 7, call2(ADD_BY_POINTER, 3, 4))
check("Add by reference", 11, call3(ADD_BY_REFERENCE, 5, 6))
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