4 This script creates a pile of compile-fail tests check that all the
5 derives have spans that point to the fields, rather than the
8 sample usage: src/etc/generate-deriving-span-tests.py
13 TEST_DIR = os.path.abspath(
14 os.path.join(os.path.dirname(__file__), '../test/ui/derives/'))
17 // FIXME: missing sysroot spans (#53081)
18 // ignore-i586-unknown-linux-gnu
19 // ignore-i586-unknown-linux-musl
20 // This file was auto-generated using 'src/etc/generate-deriving-span-tests.py'
36 ENUM_STRUCT_VARIANT_STRING = """
50 STRUCT_TUPLE_STRING = """
57 ENUM_TUPLE, ENUM_STRUCT, STRUCT_FIELDS, STRUCT_TUPLE = range(4)
59 def create_test_case(type, trait, super_traits, error_count):
60 string = [ENUM_STRING, ENUM_STRUCT_VARIANT_STRING, STRUCT_STRING, STRUCT_TUPLE_STRING][type]
61 all_traits = ','.join([trait] + super_traits)
62 super_traits = ','.join(super_traits)
63 error_deriving = '#[derive(%s)]' % super_traits if super_traits else ''
65 errors = '\n'.join('//~%s ERROR' % ('^' * n) for n in range(error_count))
66 code = string.format(traits = all_traits, errors = errors)
67 return TEMPLATE.format(error_deriving=error_deriving, code = code)
69 def write_file(name, string):
70 test_file = os.path.join(TEST_DIR, 'derives-span-%s.rs' % name)
72 # set write permission if file exists, so it can be changed
73 if os.path.exists(test_file):
74 os.chmod(test_file, stat.S_IWUSR)
76 with open(test_file, 'w') as f:
80 os.chmod(test_file, stat.S_IRUSR|stat.S_IRGRP|stat.S_IROTH)
88 'Default': (STRUCT, [], 1),
89 'FromPrimitive': (0, [], 0), # only works for C-like enums
91 'Decodable': (0, [], 0), # FIXME: quoting gives horrible spans
92 'Encodable': (0, [], 0), # FIXME: quoting gives horrible spans
95 for (trait, supers, errs) in [('Clone', [], 1),
97 ('PartialOrd', ['PartialEq'], 1),
98 ('Eq', ['PartialEq'], 1),
99 ('Ord', ['Eq', 'PartialOrd', 'PartialEq'], 1),
102 traits[trait] = (ALL, supers, errs)
104 for (trait, (types, super_traits, error_count)) in traits.items():
105 mk = lambda ty: create_test_case(ty, trait, super_traits, error_count)
107 write_file(trait + '-enum', mk(ENUM_TUPLE))
108 write_file(trait + '-enum-struct-variant', mk(ENUM_STRUCT))
110 write_file(trait + '-struct', mk(STRUCT_FIELDS))
111 write_file(trait + '-tuple-struct', mk(STRUCT_TUPLE))