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Early-interp-fix #321

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Early-interp-fix #321

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8 changes: 6 additions & 2 deletions pytential/symbolic/mappers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -763,6 +763,11 @@ class EarlyInterpolationAdder(
def map_variable(self, expr: p.Variable):
return pp.interpolate(expr, self.from_dd, self.to_dd)

def map_q_weight(self, expr: pp.QWeight):
raise ValueError(
"EarlyInterpolationAdder must not interpolate a QWeight: "
"quadrature weights are intrinsic to their discretization stage")

@override
def map_call(self,
expr: p.Call,
Expand Down Expand Up @@ -854,9 +859,8 @@ def map_int_g(self, expr: pp.IntG):

from_dd = expr.source.to_stage1()
to_dd = from_dd.to_quad_stage2()
interp_adder = EarlyInterpolationAdder(from_dd, to_dd)
densities = tuple(
interp_adder.rec_arith(self.rec_arith(density))
pp.interpolate(self.rec_arith(density), from_dd, to_dd)
for density in expr.densities)

from_dd = from_dd.copy(discr_stage=self.from_discr_stage)
Expand Down
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