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# -*- coding: utf-8 -*-
#
# Copyright © 2019 Stephan Seitz <stephan.seitz@fau.de>
#
# Distributed under terms of the GPLv3 license.
"""
"""
import sympy as sp
import pystencils
from pystencils.data_types import create_type
def test_wild_typed_symbol():
x = pystencils.fields('x: float32[3d]')
typed_symbol = pystencils.data_types.TypedSymbol('a', create_type('float64'))
assert x.center().match(sp.Wild('w1'))
assert typed_symbol.match(sp.Wild('w1'))
wild_ceiling = sp.ceiling(sp.Wild('w1'))
assert sp.ceiling(x.center()).match(wild_ceiling)
assert sp.ceiling(typed_symbol).match(wild_ceiling)
def test_replace_and_subs_for_assignment_collection():
x, y = pystencils.fields('x, y: float32[3d]')
a, b, c, d = sp.symbols('a, b, c, d')
assignments = pystencils.AssignmentCollection({
a: sp.floor(1),
b: 2,
c: a + c,
y.center(): sp.ceiling(x.center()) + sp.floor(x.center())
})
expected_assignments = pystencils.AssignmentCollection({
a: sp.floor(3),
b: 2,
c: a + c,
y.center(): sp.ceiling(x.center()) + sp.floor(x.center())
})
assert expected_assignments == assignments.replace(1, 3)
assert expected_assignments == assignments.subs({1: 3})
expected_assignments = pystencils.AssignmentCollection({
d: sp.floor(1),
b: 2,
c: d + c,
y.center(): sp.ceiling(x.center()) + sp.floor(x.center())
})
print(expected_assignments)
print(assignments.subs(a, d))
assert expected_assignments == assignments.subs(a, d)
def test_match_for_assignment_collection():
x, y = pystencils.fields('x, y: float32[3d]')
a, b, c, d = sp.symbols('a, b, c, d')
assignments = pystencils.AssignmentCollection({
a: sp.floor(1),
b: 2,
c: a + c,
y.center(): sp.ceiling(x.center()) + sp.floor(x.center())
})
w1 = sp.Wild('w1')
w2 = sp.Wild('w2')
w3 = sp.Wild('w3')
wild_ceiling = sp.ceiling(w1)
wild_addition = w1 + w2
assert assignments.match(pystencils.Assignment(w3, wild_ceiling + w2))[w1] == x.center()
assert assignments.match(pystencils.Assignment(w3, wild_ceiling + w2)) == {
w3: y.center(),
w2: sp.floor(x.center()),
w1: x.center()
}
assert assignments.find(wild_ceiling) == {sp.ceiling(x.center())}
assert len([a for a in assignments.find(wild_addition) if isinstance(a, sp.Add)]) == 2
def main():
test_wild_typed_symbol()
test_replace_and_subs_for_assignment_collection()
test_match_for_assignment_collection()
if __name__ == '__main__':
main()