def __init__(self, lhs, rhs):
ExpressionWithLHS.__init__(self, rhs)
if not MathUtil.is_single_symbol(lhs):
err = 'Expecting a single symbol on the LHS; got: %s' % lhs
raise NineMLRuntimeError(err)
if not is_valid_lhs_target(lhs):
err = 'Invalid LHS target: %s' % lhs
raise NineMLRuntimeError(err)
self._lhs = lhs.strip()
def check_lhssymbol_is_valid(self, symbol):
assert isinstance(symbol, basestring)
if not is_valid_lhs_target(symbol):
err = 'Symbol: %s found on left-hand-side of an equation'
raise NineMLRuntimeError(err)
