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run-roundtrip.py
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#!/usr/bin/env python3
#
# Copyright 2016 WebAssembly Community Group participants
#
# 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 argparse
import difflib
import os
import sys
import find_exe
import utils
from utils import Error
OK = 0
ERROR = 1
SKIPPED = 2
def FilesAreEqual(filename1, filename2, verbose=False):
try:
with open(filename1, 'rb') as file1:
data1 = file1.read()
with open(filename2, 'rb') as file2:
data2 = file2.read()
except OSError as e:
return (ERROR, str(e))
if data1 != data2:
msg = 'files differ'
if verbose:
hexdump1 = utils.Hexdump(data1)
hexdump2 = utils.Hexdump(data2)
diff_lines = []
for line in difflib.unified_diff(hexdump1, hexdump2,
fromfile=filename1,
tofile=filename2):
diff_lines.append(line)
msg += ''.join(diff_lines)
msg += '\n'
return (ERROR, msg)
return (OK, '')
def DoRoundtrip(wat2wasm, wasm2wat, out_dir, filename, verbose, stdout, skip_roundtrip_check):
basename = os.path.basename(filename)
basename_noext = os.path.splitext(basename)[0]
wasm1_file = os.path.join(out_dir, basename_noext + '-1.wasm')
wat2_file = os.path.join(out_dir, basename_noext + '-2.wat')
wasm3_file = os.path.join(out_dir, basename_noext + '-3.wasm')
try:
wat2wasm.RunWithArgs('-o', wasm1_file, filename)
except Error:
# if the file doesn't parse properly, just skip it (it may be a "bad-*"
# test)
return (SKIPPED, None)
try:
wasm2wat.RunWithArgs('-o', wat2_file, wasm1_file)
wat2wasm.RunWithArgs('-o', wasm3_file, wat2_file)
except Error as e:
return (ERROR, str(e))
if stdout:
with open(wat2_file) as f:
sys.stdout.write(f.read())
if skip_roundtrip_check:
return (OK, '')
return FilesAreEqual(wasm1_file, wasm3_file, verbose)
def main(args):
parser = argparse.ArgumentParser()
parser.add_argument('-v', '--verbose', help='print more diagnotic messages.',
action='store_true')
parser.add_argument('-o', '--out-dir', metavar='PATH',
help='output directory for files.')
parser.add_argument('--bindir', metavar='PATH',
default=find_exe.GetDefaultPath(),
help='directory to search for all executables.')
parser.add_argument('--stdout', action='store_true',
help='write wat output to stdout')
parser.add_argument('--no-error-cmdline',
help='don\'t display the subprocess\'s commandline when '
'an error occurs', dest='error_cmdline',
action='store_false')
parser.add_argument('-p', '--print-cmd',
help='print the commands that are run.',
action='store_true')
parser.add_argument('--no-check', action='store_true')
parser.add_argument('--debug-names', action='store_true')
# --generate-names modifies name section, so skip roundtrip check
parser.add_argument('--generate-names', action='store_true',
help="write debug names and skip end-to-end roundtrip check")
parser.add_argument('--fold-exprs', action='store_true')
parser.add_argument('--enable-exceptions', action='store_true')
parser.add_argument('--enable-saturating-float-to-int', action='store_true')
parser.add_argument('--enable-function-references', action='store_true')
parser.add_argument('--enable-threads', action='store_true')
parser.add_argument('--enable-sign-extension', action='store_true')
parser.add_argument('--enable-multi-value', action='store_true')
parser.add_argument('--enable-tail-call', action='store_true')
parser.add_argument('--disable-reference-types', action='store_true')
parser.add_argument('--enable-memory64', action='store_true')
parser.add_argument('--enable-multi-memory', action='store_true')
parser.add_argument('--enable-annotations', action='store_true')
parser.add_argument('--enable-code-metadata', action='store_true')
parser.add_argument('--enable-custom-page-sizes', action='store_true')
# --inline-exports can reorder exports, so skip roundtrip check
parser.add_argument('--inline-exports', action='store_true',
help="write exports inline and skip end-to-end roundtrip check")
parser.add_argument('--inline-imports', action='store_true')
parser.add_argument('--reloc', action='store_true')
parser.add_argument('file', help='test file.')
options = parser.parse_args(args)
wat2wasm = utils.Executable(
find_exe.GetWat2WasmExecutable(options.bindir),
error_cmdline=options.error_cmdline)
wat2wasm.AppendOptionalArgs({
'--debug-names': options.debug_names,
'--enable-exceptions': options.enable_exceptions,
'--enable-multi-value': options.enable_multi_value,
'--enable-saturating-float-to-int':
options.enable_saturating_float_to_int,
'--enable-sign-extension': options.enable_sign_extension,
'--enable-function-references': options.enable_function_references,
'--enable-threads': options.enable_threads,
'--enable-tail-call': options.enable_tail_call,
'--disable-reference-types': options.disable_reference_types,
'--enable-memory64': options.enable_memory64,
'--enable-multi-memory': options.enable_multi_memory,
'--enable-annotations': options.enable_annotations,
'--enable-code-metadata': options.enable_code_metadata,
'--enable-custom-page-sizes': options.enable_custom_page_sizes,
'--reloc': options.reloc,
'--no-check': options.no_check,
})
wasm2wat = utils.Executable(
find_exe.GetWasm2WatExecutable(options.bindir),
error_cmdline=options.error_cmdline)
wasm2wat.AppendOptionalArgs({
'--fold-exprs': options.fold_exprs,
'--enable-exceptions': options.enable_exceptions,
'--enable-multi-value': options.enable_multi_value,
'--enable-saturating-float-to-int':
options.enable_saturating_float_to_int,
'--enable-sign-extension': options.enable_sign_extension,
'--enable-tail-call': options.enable_tail_call,
'--enable-function-references': options.enable_function_references,
'--disable-reference-types': options.disable_reference_types,
'--enable-threads': options.enable_threads,
'--enable-memory64': options.enable_memory64,
'--enable-multi-memory': options.enable_multi_memory,
'--enable-annotations': options.enable_annotations,
'--enable-code-metadata': options.enable_code_metadata,
'--enable-custom-page-sizes': options.enable_custom_page_sizes,
'--inline-exports': options.inline_exports,
'--inline-imports': options.inline_imports,
'--no-debug-names': not options.debug_names,
'--generate-names': options.generate_names,
'--no-check': options.no_check,
})
wat2wasm.verbose = options.print_cmd
wasm2wat.verbose = options.print_cmd
filename = options.file
if not os.path.exists(filename):
sys.stderr.write('File not found: %s\n' % filename)
return ERROR
skip_roundtrip_check = options.generate_names or options.inline_exports
with utils.TempDirectory(options.out_dir, 'roundtrip-') as out_dir:
result, msg = DoRoundtrip(wat2wasm, wasm2wat, out_dir, filename,
options.verbose, options.stdout, skip_roundtrip_check)
if result == ERROR:
sys.stderr.write(msg)
return result
if __name__ == '__main__':
try:
sys.exit(main(sys.argv[1:]))
except Error as e:
sys.stderr.write(str(e) + '\n')
sys.exit(1)