/usr/lib/python2.7/dist-packages/ffc/backends/dolfin/form.py is in python-ffc 1.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 | # Copyright (C) 2011 Marie E. Rognes
#
# This file is part of DOLFIN.
#
# DOLFIN is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DOLFIN is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
#
# Based on original implementation by Martin Alnes and Anders Logg
#
# Modified by Anders Logg 2011
#
# Last changed: 2011-11-15
from includes import snippets
from functionspace import *
from goalfunctional import generate_update_ec
__all__ = ["generate_form"]
#-------------------------------------------------------------------------------
def generate_form(form, classname):
"""Generate dolfin wrapper code associated with a form including
code for function spaces used in form and typedefs
@param form:
A UFCFormNames instance
@param classname
Name of Form class.
"""
# Generate code for Form_x_FunctionSpace_y subclasses
wrap = apply_function_space_template
blocks = [wrap("%s_FunctionSpace_%d" % (classname, i),
form.ufc_finite_element_classnames[i],
form.ufc_dofmap_classnames[i]) for i in range(form.rank)]
# Add typedefs CoefficientSpace_z -> Form_x_FunctionSpace_y
blocks += ["typedef CoefficientSpace_%s %s_FunctionSpace_%d;\n"
% (form.coefficient_names[i], classname, form.rank + i)
for i in range(form.num_coefficients)]
# Generate Form subclass
blocks += [generate_form_class(form, classname)]
# Return code
return "\n".join(blocks)
#-------------------------------------------------------------------------------
def generate_form_class(form, classname):
"Generate dolfin wrapper code for a single Form class."
# Generate constructors
constructors = generate_form_constructors(form, classname)
# Generate data for coefficient assignments
(number, name) = generate_coefficient_map_data(form)
# Generate typedefs for FunctionSpace subclasses for Coefficients
typedefs = [" // Typedefs", generate_typedefs(form, classname), ""]
# Member variables for coefficients
members = [" dolfin::CoefficientAssigner %s;" % coefficient
for coefficient in form.coefficient_names]
if form.superclassname == "GoalFunctional":
members += [generate_update_ec(form)]
# Group typedefs and members together for inserting into template
additionals = "\n".join(typedefs + [" // Coefficients"] + members)
# Wrap functions in class body
code = apply_form_template(classname, constructors, number, name,
additionals, form.superclassname)
# Return code
return code
#-------------------------------------------------------------------------------
def generate_coefficient_map_data(form):
"""Generate data for code for the functions
Form::coefficient_number and Form::coefficient_name."""
# Write error if no coefficients
if form.num_coefficients == 0:
message = '''\
dolfin::dolfin_error("generated code for class %s",
"access coefficient data",
"There are no coefficients");''' % form.superclassname
num = "\n %s\n return 0;" % message
name = '\n %s\n return "unnamed";' % message
return (num, name)
# Otherwise create switch
ifstr = "if "
num = ""
name = ' switch (i)\n {\n'
for i, coeff in enumerate(form.coefficient_names):
num += ' %s(name == "%s")\n return %d;\n' % (ifstr, coeff, i)
name += ' case %d:\n return "%s";\n' % (i, coeff)
ifstr = 'else if '
# Create final return
message = '''\
dolfin::dolfin_error("generated code for class %s",
"access coefficient data",
"Invalid coefficient");''' % form.superclassname
num += "\n %s\n return 0;" % message
name += ' }\n\n %s\n return "unnamed";' % message
return (num, name)
#-------------------------------------------------------------------------------
def generate_form_constructors(form, classname):
"""Generate the dolfin::Form constructors for different
combinations of references/shared pointers etc."""
coeffs = ("referenced_coefficient", "shared_ptr_coefficient")
spaces = ("referenced_space", "shared_ptr_space")
# Treat functionals a little special
if form.rank == 0:
spaces = ("referenced_mesh", "shared_ptr_mesh")
# Generate permutations of constructors
constructors = []
for space in spaces:
constructors += [generate_constructor(form, classname, space)]
if form.num_coefficients > 0:
constructors += [generate_constructor(form, classname, space, coeff)
for coeff in coeffs]
# Return joint constructor code
return "\n\n".join(constructors)
#-------------------------------------------------------------------------------
def generate_constructor(form, classname, space_tag, coefficient_tag=None):
"Generate a single Form constructor according to the given parameters."
# Extract correct code snippets
(argument, assign) = snippets[space_tag]
# Construct list of arguments and function space assignments
name = "V%d"
if form.rank > 0:
arguments = [argument % (name % i) for i in reversed(range(form.rank))]
assignments = [assign % (i, name % i) for i in range(form.rank)]
else:
arguments = [argument]
assignments = [assign]
# Add coefficients to argument/assignment lists if specified
if coefficient_tag is not None:
(argument, assign) = snippets[coefficient_tag]
arguments += [argument % name for name in form.coefficient_names]
if form.rank > 0: # FIXME: To match old generated code only
assignments += [""]
assignments += [assign %(name, name) for name in form.coefficient_names]
# Add assignment of _ufc_form variable
line = "\n _ufc_form = std::shared_ptr<const ufc::form>(new %s());"
# FIXME: To match old generated code only
if form.rank == 0 and coefficient_tag is None:
line = " _ufc_form = std::shared_ptr<const ufc::form>(new %s());"
assignments += [line % form.ufc_form_classname]
# Construct list for initialization of Coefficient references
initializers = ["%s(*this, %d)" % (name, number)
for (number, name) in enumerate(form.coefficient_names)]
# Join lists together
arguments = ", ".join(arguments)
initializers = ", " + ", ".join(initializers) if initializers else ""
body = "\n".join(assignments)
# Wrap code into template
args = {"classname": classname,
"rank": form.rank,
"num_coefficients": form.num_coefficients,
"arguments": arguments,
"initializers": initializers,
"body": body,
"superclass": form.superclassname
}
code = form_constructor_template % args
return code
#-------------------------------------------------------------------------------
form_class_template = """\
class %(classname)s: public dolfin::%(superclass)s
{
public:
%(constructors)s
// Destructor
~%(classname)s()
{}
/// Return the number of the coefficient with this name
virtual std::size_t coefficient_number(const std::string& name) const
{
%(coefficient_number)s
}
/// Return the name of the coefficient with this number
virtual std::string coefficient_name(std::size_t i) const
{
%(coefficient_name)s
}
%(members)s
};
"""
#-------------------------------------------------------------------------------
# Template code for Form constructor
form_constructor_template = """\
// Constructor
%(classname)s(%(arguments)s):
dolfin::%(superclass)s(%(rank)d, %(num_coefficients)d)%(initializers)s
{
%(body)s
}"""
#-------------------------------------------------------------------------------
def apply_form_template(classname, constructors, number, name, members,
superclass):
args = {"classname": classname,
"superclass": superclass,
"constructors": constructors,
"coefficient_number": number,
"coefficient_name": name,
"members": members}
return form_class_template % args
#-------------------------------------------------------------------------------
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