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from abc import abstractmethod
from typing_extensions import override
from polymatrix.expression.mixins.expressionbasemixin import ExpressionBaseMixin
from polymatrix.expressionstate.mixins import ExpressionStateMixin
from polymatrix.polymatrix.mixins import PolyMatrixMixin
from polymatrix.polymatrix.init import init_poly_matrix
from polymatrix.polymatrix.typing import PolyMatrixDict, PolyDict, MonomialIndex
class FromNumbersExprMixin(ExpressionBaseMixin):
"""
Make an expression from a tuple of tuples of numbers (constant). The tuple
of tuples is interpreted as a matrix stored with row major ordering.
..code:: py
m = polymatrix.from_numbers(((0, 1), (1, 0))
"""
@property
@abstractmethod
def data(self) -> tuple[tuple[int | float]]:
""" The matrix of numbers in row major order. """
# TODO: allow numbers tuple, interpreted as row vector and just
# numbers, interpreted as scalars
@override
def apply(self, state: ExpressionStateMixin) -> tuple[ExpressionStateMixin, PolyMatrixMixin]:
p = PolyMatrixDict.empty()
for r, row in enumerate(self.data):
for c, entry in enumerate(row):
p[r, c] = PolyDict({
MonomialIndex.constant(): entry
})
shape = (r + 1, c + 1)
return state, init_poly_matrix(p, shape)
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