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# Copyright 2020 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import argparse
import collections
import json
import os
import subprocess
import sys
import tempfile
class OrderedSet(collections.OrderedDict):
def add(self, value):
self[value] = True
def compile_module(module, sources, settings, extras, tmpdir):
output_file_map = {}
if settings.whole_module_optimization:
output_file_map[''] = {
'object': os.path.join(settings.object_dir, module + '.o'),
'dependencies': os.path.join(tmpdir, module + '.d'),
}
else:
for source in sources:
name, _ = os.path.splitext(os.path.basename(source))
output_file_map[source] = {
'object': os.path.join(settings.object_dir, name + '.o'),
'dependencies': os.path.join(tmpdir, name + '.d'),
}
for key in ('module_path', 'header_path', 'depfile'):
path = getattr(settings, key)
if os.path.exists(path):
os.unlink(path)
if key == 'module_path':
for ext in '.swiftdoc', '.swiftsourceinfo':
path = os.path.splitext(getattr(settings, key))[0] + ext
if os.path.exists(path):
os.unlink(path)
directory = os.path.dirname(path)
if not os.path.exists(directory):
os.makedirs(directory)
if not os.path.exists(settings.object_dir):
os.makedirs(settings.object_dir)
for key in output_file_map:
path = output_file_map[key]['object']
if os.path.exists(path):
os.unlink(path)
output_file_map_path = os.path.join(tmpdir, module + '.json')
with open(output_file_map_path, 'w') as output_file_map_file:
output_file_map_file.write(json.dumps(output_file_map))
output_file_map_file.flush()
extra_args = []
if settings.bridge_header:
extra_args.extend([
'-import-objc-header',
os.path.abspath(settings.bridge_header),
])
if settings.whole_module_optimization:
extra_args.append('-whole-module-optimization')
if settings.target:
extra_args.extend([
'-target',
settings.target,
])
if settings.sdk:
extra_args.extend([
'-sdk',
os.path.abspath(settings.sdk),
])
if settings.swift_version:
extra_args.extend([
'-swift-version',
settings.swift_version,
])
if settings.include_dirs:
for include_dir in settings.include_dirs:
extra_args.append('-I' + include_dir)
process = subprocess.Popen([
'swiftc',
'-parse-as-library',
'-module-name',
module,
'-emit-object',
'-emit-dependencies',
'-emit-module',
'-emit-module-path',
settings.module_path,
'-emit-objc-header',
'-emit-objc-header-path',
settings.header_path,
'-output-file-map',
output_file_map_path,
] + extra_args + extras + sources,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True)
stdout, stderr = process.communicate()
if process.returncode:
sys.stdout.write(stdout)
sys.stderr.write(stderr)
sys.exit(process.returncode)
depfile_content = collections.OrderedDict()
for key in output_file_map:
for line in open(output_file_map[key]['dependencies']):
output, inputs = line.split(' : ', 2)
_, ext = os.path.splitext(output)
if ext == '.o':
key = output
else:
key = os.path.splitext(settings.module_path)[0] + ext
if key not in depfile_content:
depfile_content[key] = OrderedSet()
for path in inputs.split():
depfile_content[key].add(path)
with open(settings.depfile, 'w') as depfile:
for key in depfile_content:
if not settings.depfile_filter or key in settings.depfile_filter:
inputs = depfile_content[key]
depfile.write('%s : %s\n' % (key, ' '.join(inputs)))
def main(args):
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument('-module-name', help='name of the Swift module')
parser.add_argument('-include',
'-I',
action='append',
dest='include_dirs',
help='add directory to header search path')
parser.add_argument('sources', nargs='+', help='Swift source file to compile')
parser.add_argument('-whole-module-optimization',
action='store_true',
help='enable whole module optimization')
parser.add_argument('-object-dir',
help='path to the generated object files directory')
parser.add_argument('-module-path', help='path to the generated module file')
parser.add_argument('-header-path', help='path to the generated header file')
parser.add_argument('-bridge-header',
help='path to the Objective-C bridge header')
parser.add_argument('-depfile', help='path to the generated depfile')
parser.add_argument('-swift-version',
help='version of Swift language to support')
parser.add_argument('-depfile-filter',
action='append',
help='limit depfile to those files')
parser.add_argument('-target',
action='store',
help='generate code for the given target <triple>')
parser.add_argument('-sdk', action='store', help='compile against sdk')
parsed, extras = parser.parse_known_args(args)
with tempfile.TemporaryDirectory() as tmpdir:
compile_module(parsed.module_name, parsed.sources, parsed, extras, tmpdir)
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))
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