Viewing file:  test_crackfortran.py (9.33 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
import pytest
import numpy as np
from numpy.testing import assert_array_equal, assert_equal
from numpy.f2py.crackfortran import markinnerspaces
from . import util
from numpy.f2py import crackfortran
import textwrap
class TestNoSpace(util.F2PyTest):
# issue gh-15035: add handling for endsubroutine, endfunction with no space
# between "end" and the block name
code = """
subroutine subb(k)
real(8), intent(inout) :: k(:)
k=k+1
endsubroutine
subroutine subc(w,k)
real(8), intent(in) :: w(:)
real(8), intent(out) :: k(size(w))
k=w+1
endsubroutine
function t0(value)
character value
character t0
t0 = value
endfunction
"""
def test_module(self):
k = np.array([1, 2, 3], dtype=np.float64)
w = np.array([1, 2, 3], dtype=np.float64)
self.module.subb(k)
assert_array_equal(k, w + 1)
self.module.subc([w, k])
assert_array_equal(k, w + 1)
assert self.module.t0(23) == b'2'
class TestPublicPrivate():
def test_defaultPrivate(self, tmp_path):
f_path = tmp_path / "mod.f90"
with f_path.open('w') as ff:
ff.write(textwrap.dedent("""\
module foo
private
integer :: a
public :: setA
integer :: b
contains
subroutine setA(v)
integer, intent(in) :: v
a = v
end subroutine setA
end module foo
"""))
mod = crackfortran.crackfortran([str(f_path)])
assert len(mod) == 1
mod = mod[0]
assert 'private' in mod['vars']['a']['attrspec']
assert 'public' not in mod['vars']['a']['attrspec']
assert 'private' in mod['vars']['b']['attrspec']
assert 'public' not in mod['vars']['b']['attrspec']
assert 'private' not in mod['vars']['seta']['attrspec']
assert 'public' in mod['vars']['seta']['attrspec']
def test_defaultPublic(self, tmp_path):
f_path = tmp_path / "mod.f90"
with f_path.open('w') as ff:
ff.write(textwrap.dedent("""\
module foo
public
integer, private :: a
public :: setA
contains
subroutine setA(v)
integer, intent(in) :: v
a = v
end subroutine setA
end module foo
"""))
mod = crackfortran.crackfortran([str(f_path)])
assert len(mod) == 1
mod = mod[0]
assert 'private' in mod['vars']['a']['attrspec']
assert 'public' not in mod['vars']['a']['attrspec']
assert 'private' not in mod['vars']['seta']['attrspec']
assert 'public' in mod['vars']['seta']['attrspec']
class TestExternal(util.F2PyTest):
# issue gh-17859: add external attribute support
code = """
integer(8) function external_as_statement(fcn)
implicit none
external fcn
integer(8) :: fcn
external_as_statement = fcn(0)
end
integer(8) function external_as_attribute(fcn)
implicit none
integer(8), external :: fcn
external_as_attribute = fcn(0)
end
"""
def test_external_as_statement(self):
def incr(x):
return x + 123
r = self.module.external_as_statement(incr)
assert r == 123
def test_external_as_attribute(self):
def incr(x):
return x + 123
r = self.module.external_as_attribute(incr)
assert r == 123
class TestCrackFortran(util.F2PyTest):
suffix = '.f90'
code = textwrap.dedent("""
subroutine gh2848( &
! first 2 parameters
par1, par2,&
! last 2 parameters
par3, par4)
integer, intent(in) :: par1, par2
integer, intent(out) :: par3, par4
par3 = par1
par4 = par2
end subroutine gh2848
""")
def test_gh2848(self):
r = self.module.gh2848(1, 2)
assert r == (1, 2)
class TestMarkinnerspaces():
# issue #14118: markinnerspaces does not handle multiple quotations
def test_do_not_touch_normal_spaces(self):
test_list = ["a ", " a", "a b c", "'abcdefghij'"]
for i in test_list:
assert_equal(markinnerspaces(i), i)
def test_one_relevant_space(self):
assert_equal(markinnerspaces("a 'b c' \\\' \\\'"), "a 'b@_@c' \\' \\'")
assert_equal(markinnerspaces(r'a "b c" \" \"'), r'a "b@_@c" \" \"')
def test_ignore_inner_quotes(self):
assert_equal(markinnerspaces('a \'b c" " d\' e'),
"a 'b@_@c\"@_@\"@_@d' e")
assert_equal(markinnerspaces('a "b c\' \' d" e'),
"a \"b@_@c'@_@'@_@d\" e")
def test_multiple_relevant_spaces(self):
assert_equal(markinnerspaces("a 'b c' 'd e'"), "a 'b@_@c' 'd@_@e'")
assert_equal(markinnerspaces(r'a "b c" "d e"'), r'a "b@_@c" "d@_@e"')
class TestDimSpec(util.F2PyTest):
"""This test suite tests various expressions that are used as dimension
specifications.
There exists two usage cases where analyzing dimensions
specifications are important.
In the first case, the size of output arrays must be defined based
on the inputs to a Fortran function. Because Fortran supports
arbitrary bases for indexing, for instance, `arr(lower:upper)`,
f2py has to evaluate an expression `upper - lower + 1` where
`lower` and `upper` are arbitrary expressions of input parameters.
The evaluation is performed in C, so f2py has to translate Fortran
expressions to valid C expressions (an alternative approach is
that a developer specifies the corresponding C expressions in a
.pyf file).
In the second case, when user provides an input array with a given
size but some hidden parameters used in dimensions specifications
need to be determined based on the input array size. This is a
harder problem because f2py has to solve the inverse problem: find
a parameter `p` such that `upper(p) - lower(p) + 1` equals to the
size of input array. In the case when this equation cannot be
solved (e.g. because the input array size is wrong), raise an
error before calling the Fortran function (that otherwise would
likely crash Python process when the size of input arrays is
wrong). f2py currently supports this case only when the equation
is linear with respect to unknown parameter.
"""
suffix = '.f90'
code_template = textwrap.dedent("""
function get_arr_size_{count}(a, n) result (length)
integer, intent(in) :: n
integer, dimension({dimspec}), intent(out) :: a
integer length
length = size(a)
end function
subroutine get_inv_arr_size_{count}(a, n)
integer :: n
! the value of n is computed in f2py wrapper
!f2py intent(out) n
integer, dimension({dimspec}), intent(in) :: a
if (a({first}).gt.0) then
print*, "a=", a
endif
end subroutine
""")
linear_dimspecs = [
"n", "2*n", "2:n", "n/2", "5 - n/2", "3*n:20", "n*(n+1):n*(n+5)",
"2*n, n"
]
nonlinear_dimspecs = ["2*n:3*n*n+2*n"]
all_dimspecs = linear_dimspecs + nonlinear_dimspecs
code = ''
for count, dimspec in enumerate(all_dimspecs):
lst = [(d.split(":")[0] if ":" in d else "1") for d in dimspec.split(',')]
code += code_template.format(
count=count,
dimspec=dimspec,
first=", ".join(lst),
)
@pytest.mark.parametrize('dimspec', all_dimspecs)
def test_array_size(self, dimspec):
count = self.all_dimspecs.index(dimspec)
get_arr_size = getattr(self.module, f'get_arr_size_{count}')
for n in [1, 2, 3, 4, 5]:
sz, a = get_arr_size(n)
assert a.size == sz
@pytest.mark.parametrize('dimspec', all_dimspecs)
def test_inv_array_size(self, dimspec):
count = self.all_dimspecs.index(dimspec)
get_arr_size = getattr(self.module, f'get_arr_size_{count}')
get_inv_arr_size = getattr(self.module, f'get_inv_arr_size_{count}')
for n in [1, 2, 3, 4, 5]:
sz, a = get_arr_size(n)
if dimspec in self.nonlinear_dimspecs:
# one must specify n as input, the call we'll ensure
# that a and n are compatible:
n1 = get_inv_arr_size(a, n)
else:
# in case of linear dependence, n can be determined
# from the shape of a:
n1 = get_inv_arr_size(a)
# n1 may be different from n (for instance, when `a` size
# is a function of some `n` fraction) but it must produce
# the same sized array
sz1, _ = get_arr_size(n1)
assert sz == sz1, (n, n1, sz, sz1)
class TestModuleDeclaration():
def test_dependencies(self, tmp_path):
f_path = tmp_path / "mod.f90"
with f_path.open('w') as ff:
ff.write(textwrap.dedent("""\
module foo
type bar
character(len = 4) :: text
end type bar
type(bar), parameter :: abar = bar('abar')
end module foo
"""))
mod = crackfortran.crackfortran([str(f_path)])
assert len(mod) == 1
assert mod[0]['vars']['abar']['='] == "bar('abar')"
|