/usr/lib/python2.7/dist-packages/dolfin/compilemodules/compilemodule.py is in python-dolfin 1.3.0+dfsg-2.
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extension modules."""
# Copyright (C) 2009 Johan Hake
#
# 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/>.
#
# Modified by Johannes Ring, 2011
#
# First added: 2009-08-15
# Last changed: 2011-08-31
import sys
import os
import re
import numpy
import instant
import hashlib
import types
from dolfin_utils.cppparser import *
# Import PyDOLFIN
import dolfin
import dolfin.cpp as cpp
from dolfin.compilemodules.jit import mpi_jit_decorator
from dolfin.compilemodules.swigimportinfo import *
__all__ = ["compile_extension_module",
"expression_to_code_fragments",
"math_header"]
# Bump the interface version if anything changes that invalidates cached
# modules (not required for change in generated code, swig version or dolfin
# version)
_interface_version = 1
# A list of supported math builtins
_cpp_math_builtins = [
# <cmath> functions: from http://www.cplusplus.com/reference/cmath/
"cos", "sin", "tan", "acos", "asin", "atan", "atan2",
"cosh", "sinh", "tanh", "exp", "frexp", "ldexp", "log", "log10", "modf",
"pow", "sqrt", "ceil", "fabs", "floor", "fmod",
"max", "min"]
_math_builtins = [
# math.h functions: http://en.wikibooks.org/wiki/C_Programming/C_Reference/math.h
"acos", "asin", "atan", "atan2", "ceil", "cos", "cosh", "exp",
"fabs", "floor", "fmod", "frexp", "ldexp", "log", "log10", "modf",
"pow", "sin", "sinh", "sqrt", "tan", "tanh", "acosh", "asinh", "atanh",
"cbrt", "copysign", "erf", "erfc", "exp2", "expm1", "fdim", "fma", "fmax",
"fmin", "hypot", "ilogb", "lgamma", "llrint", "lrint", "llround", "lround",
"log1p", "log2", "logb", "nan", "nearbyint", "nextafter", "nexttoward",
"remainder", "remquo", "rint", "round", "scalbln", "scalbn", "tgamma", "trunc"]
_math_dolfin = [
# functions from dolfin::math:
"sqr", "ipow", "rand", "near", "DOLFIN_EPS", "DOLFIN_PI", "pi"]
_all_math = list(set(_math_builtins).difference(_cpp_math_builtins)) + \
_math_dolfin + _cpp_math_builtins
math_header = """
// cmath functions
%s
const double pi = DOLFIN_PI;
""" % "\n".join("using std::%s;" % mf for mf in _cpp_math_builtins)
_cpp_keywords = ["auto","const","double","float","int","short","struct","unsigned",
"break","continue","else","for","long","signed","switch","void",
"case","default","enum","goto","register","sizeof","typedef",
"char","do","extern","if","return","static","union","while",
"asm","dynamic_cast","namespace","reinterpret_cast","try",
"bool","explicit","new","static_cast","typeid","volatile",
"catch","operator","template","typename",
"class","friend","private","this","using",
"const_cast","inline","public","throw","virtual",
"delete","mutable","protected","wchar_t",
"or","and","xor","not"]
_additional_declarations = r"""
%%init%%{
import_array();
%%}
// Include global SWIG interface files:
// Typemaps, shared_ptr declarations, exceptions, version
%%include <boost_shared_ptr.i>
%%{
#define SWIG_SHARED_PTR_QNAMESPACE boost
%%}
// Global typemaps and forward declarations
%%include "dolfin/swig/typemaps/includes.i"
%%include "dolfin/swig/forwarddeclarations.i"
// Global exceptions
%%include <exception.i>
%%include "dolfin/swig/exceptions.i"
// Do not expand default arguments in C++ by generating two an extra
// function in the SWIG layer. This reduces code bloat.
%%feature("compactdefaultargs");
// STL SWIG string class
%%include <std_string.i>
// Manually import ufc:
%%shared_ptr(ufc::cell_integral)
%%shared_ptr(ufc::dofmap)
%%shared_ptr(ufc::finite_element)
%%shared_ptr(ufc::function)
%%shared_ptr(ufc::form)
%%shared_ptr(ufc::exterior_facet_integral)
%%shared_ptr(ufc::interior_facet_integral)
%%import(module="ufc") "ufc.h"
// Local shared_ptr declarations
%(shared_ptr_declarations)s
%(additional_declarations)s
// Import statements
%(dolfin_import_statement)s
%%feature("autodoc", "1");
%%inline %%{
int get_swigversion() { return SWIGVERSION; }
%%}
%%pythoncode %%{
tmp = hex(get_swigversion())
swigversion = "%%d.%%d.%%d"%%(tuple(map(int, [tmp[-5], tmp[-3], tmp[-2:]])))
del tmp, get_swigversion
%%}
"""
def expression_to_code_fragments(expr, arguments, generic_function_members=None):
"A help function which extract a dict with code snippets from an expression"
generic_function_members = generic_function_members or []
expr = list(expr)
# Autodetect variables from function strings
variables = set()
for i, c in enumerate(expr):
# Find groups of connected alphanumeric letters
symbols = re.findall(r"([a-zA-Z_]*:{0,2}[\w]+)", c)
assert isinstance(symbols, list)
variables.update(symbols)
for sym in symbols:
if sym in _cpp_keywords:
cpp.dolfin_error("compilemodule.py",
"parse expression string",
"Detected C++ keyword (%s) in C++ expression" % sym)
# FIXME: Remove outcommented code?
# NOTE: A hack to get around an ambiguous overloading of
# dolfin::pow(double,int)
#if "pow" in symbols:
# c = c.replace("pow","std::pow")
expr[i] = c
# Remove any variables defined in the arguments list
variables.difference_update(arguments)
# Remove the builtin math functions from the variables
variables.difference_update(_all_math)
# Remove the numerals from the variables
numerals = [v for v in variables if v[0] in "0123456789"]
variables.difference_update(numerals)
# Remove any exponential representation
exponentials = [v for v in variables if bool(re.search("e[0-9,\-,\.,\+]+", v))]
variables.difference_update(exponentials+["e"])
# Remove namespace-specified variables
namespacevars = [v for v in variables if "::" in v]
variables.difference_update(namespacevars)
# Generate code for member variables
members_code = [" double %s;" % name for name in variables \
if name not in generic_function_members]
members_code.extend(" boost::shared_ptr<dolfin::GenericFunction> shared_%s;" % name \
for name in generic_function_members)
members_code = "\n".join(members_code)
# Generate constructor code for initialization of member variables
constructor_code = "\n".join(" %s = 0;" % name for name in variables\
if name not in generic_function_members)
# Connect the code fragments using the function template code
fragments = {}
fragments["members"] = members_code
fragments["constructor"] = constructor_code
# Return the code fragments
return fragments, variables
def expect_list_of(argtype, arg, argname):
if arg is None:
return []
if isinstance(arg, (types.NoneType, list, tuple)):
if all(isinstance(s, argtype) for s in arg):
return arg
cpp.dolfin_error("compilemodule.py",
"ensure correct argument for compile_extension_module",
"Provide a 'tuple' or 'list' with '%s', for the "\
"'%s' argument" % (argtype.__name__, argname))
def expect_arg(argtype, arg, argname):
# Check the type of the argument
if isinstance(arg, argtype):
return
cpp.dolfin_error("compilemodule.py",
"ensure correct argument for compile_extension_module",
"Provide a '%s', for the '%s' argument" % \
(argtype.__name__, argname))
def check_swig_version(compiled_module):
# Check swig version of compiled module
if compiled_module and compiled_module.swigversion != cpp.__swigversion__:
cpp.dolfin_error("compilemodule.py",
"compiling extension module",
"Incompatible swig versions detected. DOLFIN swig "\
"version is not the same as extension module swig "\
"version: '%s' != '%s' " % \
(cpp.__swigversion__, compiled_module.swigversion))
@mpi_jit_decorator
def compile_extension_module(code, module_name="",
additional_declarations="",
additional_system_headers=None,
**instant_kwargs):
"""
Just In Time compile DOLFIN C++ code into a Python module.
*Arguments*
code
C++ code which implements any function or C++ class. Any function
or class available in the C++ DOLFIN namespace can be used and/or
subclassed. All typemaps from the original Python interface are
available, making it possible to interface with for example NumPy
for Array<double/int> arguments. Source which is not wrapped in
a dolfin namespace will be automatically wrapped.
module_name
Force a name of the module. If not set a name based on the hex
representation of the code will be used.
additional_declarations
Additional SWIG declarations can be passed using this argument.
additional_system_headers :
System headers needed to compile the generated can be included
using this argument. The headers are passed using a list of 'str'
*Returns*
The JIT compiled extension module
*Examples of usage*
The following toy example shows how one can use compiled extension
modules to access low level PETSc routines:
.. code-block:: python
from numpy import arange
code = '''
namespace dolfin {
void PETSc_exp(boost::shared_ptr<dolfin::PETScVector> vec)
{
boost::shared_ptr<Vec> x = vec->vec();
assert(x);
VecExp(*x);
}
}
'''
ext_module = compile_extension_module(code,
additional_system_headers=["petscvec.h"])
vec = PETScVector(10)
vec[:] = arange(10)
print vec[-1]
ext_module.PETSc_exp(vec)
print vec[-1]
"""
# Check the provided arguments
expect_arg(str, code, "first")
expect_arg(str, module_name, "module_name")
expect_arg(str, additional_declarations, "additional_declarations")
additional_system_headers = \
expect_list_of(str, additional_system_headers, "additional_system_headers")
# Check that the code does not use 'using namespace dolfin'
if re.search("using\s+namespace\s+dolfin",code):
cpp.dolfin_error("compilemodule.py",
"ensure correct argument to compile_extension_module",
"Do not use 'using namespace dolfin'. "\
"Include the code in namespace dolfin {...} instead")
# Check if the code does not use namespace dolfin {...}
if not re.search("namespace\s+dolfin\s*\{[\s\S]+\}", code):
# Wrap and indet code in namespace dolfin
codelines = ["namespace dolfin","{"]
codelines += [" " + line for line in code.split("\n")]
codelines += ["}"]
code = "\n".join(codelines)
# Create unique module name for this application run
if module_name is "":
module_name = "dolfin_compile_code_%s" % \
hashlib.md5(repr(code) + dolfin.__version__ + \
str(_interface_version)+\
additional_declarations +\
str(additional_system_headers)).hexdigest()
# Extract dolfin dependencies and class names
used_types, declared_types = parse_and_extract_type_info(code)
# Add any bases of the declared types to used_types
for declared_type, bases in declared_types.items():
used_types.update(bases)
# Filter out dolfin types and add derived and bases for each type
used_dolfin_types = []
for dolfin_type in dolfin_type_def:
for used_type in used_types:
if dolfin_type in used_type:
# Add bases and derived types
used_dolfin_types.extend(\
dolfin_type_def[dolfin_type]["bases"])
# Add dolfin type
used_dolfin_types.append(dolfin_type)
break
# Generate dependency info
dependencies = {}
for dolfin_type in used_dolfin_types:
if dolfin_type_def[dolfin_type]["submodule"] not in dependencies:
dependencies[dolfin_type_def[dolfin_type]["submodule"]] = []
dependencies[dolfin_type_def[dolfin_type]["submodule"]].append(\
dolfin_type_def[dolfin_type]["header"])
# Need special treatment for template definitions in function/pre.i
if "function" in dependencies:
for dolfin_type in ["FunctionSpace", "Function"]:
dependencies["function"].append(dolfin_type_def[dolfin_type]["header"])
# Add uint type
if "common" in dependencies:
dependencies["common"].append("dolfin/common/types.h")
else:
dependencies["common"] = ["dolfin/common/types.h"]
# Sort the dependencies
dependencies = sort_submodule_dependencies(dependencies, submodule_info)
import_lines, headers_includes, file_dependencies = \
build_swig_import_info(dependencies, submodule_info, "dolfin.cpp.")
# Extract header info
dolfin_system_headers = [header for header in file_dependencies \
if not "pre.i" in header]
# Check the handed import files
interface_import_files = []
# Check cache
compiled_module = instant.import_module(module_name)
if compiled_module:
# Check that the swig version of the compiled module is the same as
# dolfin was compiled with
check_swig_version(compiled_module)
return compiled_module
sys.stdout.flush()
dolfin.info("Calling DOLFIN just-in-time (JIT) compiler, this may take some time.")
# Configure instant and add additional system headers
# Add dolfin system headers
instant_kwargs["system_headers"] = ["cmath", "iostream","complex",
"stdexcept","numpy/arrayobject.h",
"boost/shared_ptr.hpp",
"dolfin/common/types.h",
"dolfin/math/basic.h"] + \
instant_kwargs.get("system_headers", [])
instant_kwargs["system_headers"] += dolfin_system_headers
# Add user specified system headers
instant_kwargs["system_headers"] += additional_system_headers
# Add cmake packages
instant_kwargs["cmake_packages"] = ["DOLFIN"] + \
instant_kwargs.get("cmake_packages", [])
instant_kwargs["signature"] = module_name
declaration_strs = {"additional_declarations":""}
declaration_strs["dolfin_import_statement"] = \
"\n".join(import_lines)
# Add any provided additional declarations
if additional_declarations is not None:
declaration_strs["additional_declarations"] += additional_declarations
# Add any shared_ptr declarations
declaration_strs["shared_ptr_declarations"] = \
extract_shared_ptr_declaration(declared_types, used_dolfin_types, \
shared_ptr_classes)
# Compile extension module with instant
compiled_module = instant.build_module(\
code = code,
additional_declarations = _additional_declarations % declaration_strs,
**instant_kwargs)
sys.stdout.flush()
# Check that the swig version of the compiled module is the same as
# dolfin was compiled with
check_swig_version(compiled_module)
return compiled_module
def extract_shared_ptr_declaration(declared_types, used_dolfin_types, shared_ptr_classes):
" Extract any declaration for shared_ptr"
# Check if there are any classes that is derived from any of the
# shared_ptr classes in PyDOLFIN and declare if any
shared_ptr_format = "%%shared_ptr(dolfin::%s)"
used_shared_ptr_types = []
# Collect used types which should be shared_ptr declared
for dolfin_type in used_dolfin_types:
if dolfin_type in shared_ptr_classes:
used_shared_ptr_types.append(dolfin_type)
used_shared_ptr_types.extend(derived for derived, bases in declared_types.items()
if any(base in shared_ptr_classes for base in bases))
shared_ptr_declarations = "\n".join([shared_ptr_format % derived \
for derived in used_shared_ptr_types])
return shared_ptr_declarations
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