Source code for ffcx.naming

# Copyright (C) 2009-2020 Anders Logg and Michal Habera
#
# This file is part of FFCx.(https://www.fenicsproject.org)
#
# SPDX-License-Identifier:    LGPL-3.0-or-later
"""Naming."""

import hashlib
import typing

import basix.ufl
import numpy as np
import numpy.typing as npt
import ufl

import ffcx
import ffcx.codegeneration


[docs] def compute_signature( ufl_objects: list[ typing.Union[ ufl.Form, basix.ufl._ElementBase, tuple[ufl.core.expr.Expr, npt.NDArray[np.float64]], ] ], tag: str, ) -> str: """Compute the signature hash. Based on the UFL type of the objects and an additional optional 'tag'. """ object_signature = "" for ufl_object in ufl_objects: # Get signature from ufl object if isinstance(ufl_object, ufl.Form): kind = "form" object_signature += ufl_object.signature() elif isinstance(ufl_object, ufl.AbstractFiniteElement): object_signature += repr(ufl_object) kind = "element" elif isinstance(ufl_object, tuple) and isinstance(ufl_object[0], ufl.core.expr.Expr): expr = ufl_object[0] points = ufl_object[1] # FIXME Move this to UFL, cache the computation coeffs = ufl.algorithms.extract_coefficients(expr) consts = ufl.algorithms.analysis.extract_constants(expr) args = ufl.algorithms.analysis.extract_arguments(expr) rn = dict() rn.update(dict((c, i) for i, c in enumerate(coeffs))) rn.update(dict((c, i) for i, c in enumerate(consts))) rn.update(dict((c, i) for i, c in enumerate(args))) domains: list[ufl.Mesh] = [] for coeff in coeffs: domains.append(*coeff.ufl_domains()) for arg in args: domains.append(*arg.ufl_function_space().ufl_domains()) for gc in ufl.algorithms.analysis.extract_type(expr, ufl.classes.GeometricQuantity): domains.append(*gc.ufl_domains()) for const in consts: domains.append(const.ufl_domain()) domains = ufl.algorithms.analysis.unique_tuple(domains) rn.update(dict((d, i) for i, d in enumerate(domains))) # Hash on UFL signature and points signature = ufl.algorithms.signature.compute_expression_signature(expr, rn) object_signature += signature object_signature += repr(points) kind = "expression" else: raise RuntimeError(f"Unknown ufl object type {ufl_object.__class__.__name__}") # Build combined signature signatures = [ object_signature, str(ffcx.__version__), ffcx.codegeneration.get_signature(), kind, tag, ] string = ";".join(signatures) return hashlib.sha1(string.encode("utf-8")).hexdigest()
[docs] def integral_name(original_form, integral_type, form_id, subdomain_id, prefix): """Get integral name.""" sig = compute_signature([original_form], str((prefix, integral_type, form_id, subdomain_id))) return f"integral_{sig}"
[docs] def form_name(original_form, form_id, prefix): """Get form name.""" sig = compute_signature([original_form], str((prefix, form_id))) return f"form_{sig}"
[docs] def finite_element_name(ufl_element, prefix): """Get finite element name.""" assert isinstance(ufl_element, basix.ufl._ElementBase) sig = compute_signature([ufl_element], prefix) return f"element_{sig}"
[docs] def dofmap_name(ufl_element, prefix): """Get DOF map name.""" assert isinstance(ufl_element, basix.ufl._ElementBase) sig = compute_signature([ufl_element], prefix) return f"dofmap_{sig}"
[docs] def expression_name(expression, prefix): """Get expression name.""" assert isinstance(expression[0], ufl.core.expr.Expr) sig = compute_signature([expression], prefix) return f"expression_{sig}"