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
|
# Copyright 2020 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import os
import pathlib
import pickle
import re
import sys
import typing as T
from ..backend.ninjabackend import TargetDependencyScannerInfo, ninja_quote
from ..compilers.compilers import lang_suffixes
CPP_IMPORT_RE = re.compile(r'\w*import ([a-zA-Z0-9]+);')
CPP_EXPORT_RE = re.compile(r'\w*export module ([a-zA-Z0-9]+);')
FORTRAN_INCLUDE_PAT = r"^\s*include\s*['\"](\w+\.\w+)['\"]"
FORTRAN_MODULE_PAT = r"^\s*\bmodule\b\s+(\w+)\s*(?:!+.*)*$"
FORTRAN_SUBMOD_PAT = r"^\s*\bsubmodule\b\s*\((\w+:?\w+)\)\s*(\w+)"
FORTRAN_USE_PAT = r"^\s*use,?\s*(?:non_intrinsic)?\s*(?:::)?\s*(\w+)"
FORTRAN_MODULE_RE = re.compile(FORTRAN_MODULE_PAT, re.IGNORECASE)
FORTRAN_SUBMOD_RE = re.compile(FORTRAN_SUBMOD_PAT, re.IGNORECASE)
FORTRAN_USE_RE = re.compile(FORTRAN_USE_PAT, re.IGNORECASE)
class DependencyScanner:
def __init__(self, pickle_file: str, outfile: str, sources: T.List[str]):
with open(pickle_file, 'rb') as pf:
self.target_data = pickle.load(pf) # type: TargetDependencyScannerInfo
self.outfile = outfile
self.sources = sources
self.provided_by = {} # type: T.Dict[str, str]
self.exports = {} # type: T.Dict[str, str]
self.needs = {} # type: T.Dict[str, T.List[str]]
self.sources_with_exports = [] # type: T.List[str]
def scan_file(self, fname: str) -> None:
suffix = os.path.splitext(fname)[1][1:].lower()
if suffix in lang_suffixes['fortran']:
self.scan_fortran_file(fname)
elif suffix in lang_suffixes['cpp']:
self.scan_cpp_file(fname)
else:
sys.exit(f'Can not scan files with suffix .{suffix}.')
def scan_fortran_file(self, fname: str) -> None:
fpath = pathlib.Path(fname)
modules_in_this_file = set()
for line in fpath.read_text(encoding='utf-8').split('\n'):
import_match = FORTRAN_USE_RE.match(line)
export_match = FORTRAN_MODULE_RE.match(line)
submodule_export_match = FORTRAN_SUBMOD_RE.match(line)
if import_match:
needed = import_match.group(1).lower()
# In Fortran you have an using declaration also for the module
# you define in the same file. Prevent circular dependencies.
if needed not in modules_in_this_file:
if fname in self.needs:
self.needs[fname].append(needed)
else:
self.needs[fname] = [needed]
if export_match:
exported_module = export_match.group(1).lower()
assert exported_module not in modules_in_this_file
modules_in_this_file.add(exported_module)
if exported_module in self.provided_by:
raise RuntimeError(f'Multiple files provide module {exported_module}.')
self.sources_with_exports.append(fname)
self.provided_by[exported_module] = fname
self.exports[fname] = exported_module
if submodule_export_match:
# Store submodule "Foo" "Bar" as "foo:bar".
# A submodule declaration can be both an import and an export declaration:
#
# submodule (a1:a2) a3
# - requires a1@a2.smod
# - produces a1@a3.smod
parent_module_name_full = submodule_export_match.group(1).lower()
parent_module_name = parent_module_name_full.split(':')[0]
submodule_name = submodule_export_match.group(2).lower()
concat_name = f'{parent_module_name}:{submodule_name}'
self.sources_with_exports.append(fname)
self.provided_by[concat_name] = fname
self.exports[fname] = concat_name
# Fortran requires that the immediate parent module must be built
# before the current one. Thus:
#
# submodule (parent) parent <- requires parent.mod (really parent.smod, but they are created at the same time)
# submodule (a1:a2) a3 <- requires a1@a2.smod
#
# a3 does not depend on the a1 parent module directly, only transitively.
if fname in self.needs:
self.needs[fname].append(parent_module_name_full)
else:
self.needs[fname] = [parent_module_name_full]
def scan_cpp_file(self, fname: str) -> None:
fpath = pathlib.Path(fname)
for line in fpath.read_text(encoding='utf-8').split('\n'):
import_match = CPP_IMPORT_RE.match(line)
export_match = CPP_EXPORT_RE.match(line)
if import_match:
needed = import_match.group(1)
if fname in self.needs:
self.needs[fname].append(needed)
else:
self.needs[fname] = [needed]
if export_match:
exported_module = export_match.group(1)
if exported_module in self.provided_by:
raise RuntimeError(f'Multiple files provide module {exported_module}.')
self.sources_with_exports.append(fname)
self.provided_by[exported_module] = fname
self.exports[fname] = exported_module
def objname_for(self, src: str) -> str:
objname = self.target_data.source2object[src]
assert isinstance(objname, str)
return objname
def module_name_for(self, src: str) -> str:
suffix = os.path.splitext(src)[1][1:].lower()
if suffix in lang_suffixes['fortran']:
exported = self.exports[src]
# Module foo:bar goes to a file name foo@bar.smod
# Module Foo goes to a file name foo.mod
namebase = exported.replace(':', '@')
if ':' in exported:
extension = 'smod'
else:
extension = 'mod'
return os.path.join(self.target_data.private_dir, f'{namebase}.{extension}')
elif suffix in lang_suffixes['cpp']:
return '{}.ifc'.format(self.exports[src])
else:
raise RuntimeError('Unreachable code.')
def scan(self) -> int:
for s in self.sources:
self.scan_file(s)
with open(self.outfile, 'w', encoding='utf-8') as ofile:
ofile.write('ninja_dyndep_version = 1\n')
for src in self.sources:
objfilename = self.objname_for(src)
mods_and_submods_needed = []
module_files_generated = []
module_files_needed = []
if src in self.sources_with_exports:
module_files_generated.append(self.module_name_for(src))
if src in self.needs:
for modname in self.needs[src]:
if modname not in self.provided_by:
# Nothing provides this module, we assume that it
# comes from a dependency library somewhere and is
# already built by the time this compilation starts.
pass
else:
mods_and_submods_needed.append(modname)
for modname in mods_and_submods_needed:
provider_src = self.provided_by[modname]
provider_modfile = self.module_name_for(provider_src)
# Prune self-dependencies
if provider_src != src:
module_files_needed.append(provider_modfile)
quoted_objfilename = ninja_quote(objfilename, True)
quoted_module_files_generated = [ninja_quote(x, True) for x in module_files_generated]
quoted_module_files_needed = [ninja_quote(x, True) for x in module_files_needed]
if quoted_module_files_generated:
mod_gen = '| ' + ' '.join(quoted_module_files_generated)
else:
mod_gen = ''
if quoted_module_files_needed:
mod_dep = '| ' + ' '.join(quoted_module_files_needed)
else:
mod_dep = ''
build_line = 'build {} {}: dyndep {}'.format(quoted_objfilename,
mod_gen,
mod_dep)
ofile.write(build_line + '\n')
return 0
def run(args: T.List[str]) -> int:
assert len(args) == 3, 'got wrong number of arguments!'
pickle_file, outfile, jsonfile = args
with open(jsonfile, encoding='utf-8') as f:
sources = json.load(f)
scanner = DependencyScanner(pickle_file, outfile, sources)
return scanner.scan()
|
