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# Special cases:
# https://github.com/SCons/scons/issues/1738
env_1738_2 = Environment(CPPDEFPREFIX='-D')
env_1738_2['CPPDEFINES'] = ['FOO']
env_1738_2.Prepend(CPPDEFINES={'value': '1'})
print(env_1738_2.subst('$_CPPDEFFLAGS'))
# env_1738_2.Object('test_1738_2', 'main.c')
# https://github.com/SCons/scons/issues/2300
env_2300_1 = Environment(CPPDEFINES='foo', CPPDEFPREFIX='-D')
env_2300_1.Prepend(CPPDEFINES='bar')
print(env_2300_1.subst('$_CPPDEFFLAGS'))
env_2300_2 = Environment(CPPDEFINES=['foo'], CPPDEFPREFIX='-D') # note the list
env_2300_2.Prepend(CPPDEFINES='bar')
print(env_2300_2.subst('$_CPPDEFFLAGS'))
# an initial space-separated string will be split, but not a string in a list
env_multi = Environment(CPPDEFPREFIX='-D')
env_multi['CPPDEFINES'] = "foo bar"
env_multi.Prepend(CPPDEFINES="baz")
print(env_multi.subst('$_CPPDEFFLAGS'))
env_multi = Environment(CPPDEFPREFIX='-D')
env_multi['CPPDEFINES'] = ["foo bar"]
env_multi.Prepend(CPPDEFINES="baz")
print(env_multi.subst('$_CPPDEFFLAGS'))
env_multi = Environment(CPPDEFPREFIX='-D')
env_multi['CPPDEFINES'] = "foo"
env_multi.Prepend(CPPDEFINES=["bar baz"])
print(env_multi.subst('$_CPPDEFFLAGS'))
# check that PrependUnique(..., delete_existing=True) works as expected
# each addition is in different but matching form, and different order,
# so we expect a reordered list, but with the same macro defines.
env_multi = Environment(CPPDEFPREFIX='-D')
env_multi.Prepend(CPPDEFINES=["Macro1=Value1", ("Macro2", "Value2"), {"Macro3": "Value3"}])
env_multi.PrependUnique(CPPDEFINES="Macro2=Value2", delete_existing=True)
env_multi.PrependUnique(CPPDEFINES=[("Macro3", "Value3")], delete_existing=True)
env_multi.PrependUnique(CPPDEFINES={"Macro1": "Value1"}, delete_existing=True)
print(env_multi.subst('$_CPPDEFFLAGS'))
# https://github.com/SCons/scons/issues/1152
# https://github.com/SCons/scons/issues/2900
# Python3 dicts dont preserve order. Hence we supply subclass of OrderedDict
# whose __str__ and __repr__ act like a normal dict.
from collections import OrderedDict
class OrderedPrintingDict(OrderedDict):
def __repr__(self):
return '{' + ', '.join([f'{k!r}: {v!r}' for (k, v) in self.items()]) + '}'
__str__ = __repr__
# Because dict-like objects (except dict and UserDict) are not deep copied
# directly when constructing Environment(CPPDEFINES=OrderedPrintingDict(...))
def __semi_deepcopy__(self):
return self.copy()
# each of these types will be prepended to each of the others
# the first item in each tuple is a label for the output
cases = [
('string', 'FOO'),
('valuestring', 'NAME1=VAL1'),
('list', ['NAME1', 'NAME2']),
('list-of-2lists', [('NAME1', 'VAL1'), ['NAME2', 'VAL2']]),
(
'dict',
OrderedPrintingDict([('NAME2', 'VAL2'), ('NAME3', None), ('NAME1', 'VAL1')]),
),
]
def dlist(coll):
# if it's a deque, turn it into a list for display purposes
from collections import deque
if isinstance(coll, deque):
return list(coll)
return coll
for (t1, c1) in cases:
for (t2, c2) in cases:
print(f"==== Testing CPPDEFINES, prepending a {t2} to a {t1}")
# string-like appearance if the value is a string
orig = f"'{c1}'" if isinstance(c1, str) else c1
pre = f"'{c2}'" if isinstance(c2, str) else c2
print(f" orig = {orig}, prepend = {pre}")
env = Environment(CPPDEFINES=c1, CPPDEFPREFIX='-D')
env.Prepend(CPPDEFINES=c2)
final = env.subst('$_CPPDEFFLAGS', source="src", target="tgt")
print(f"Prepend:\n\tresult={dlist(env['CPPDEFINES'])}\n\tfinal={final}")
env = Environment(CPPDEFINES=c1, CPPDEFPREFIX='-D')
env.PrependUnique(CPPDEFINES=c2)
final = env.subst('$_CPPDEFFLAGS', source="src", target="tgt")
print(
f"PrependUnique:\n\tresult={dlist(env['CPPDEFINES'])}\n\tfinal={final}"
)
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