| # This Source Code Form is subject to the terms of the Mozilla Public |
| # License, v. 2.0. If a copy of the MPL was not distributed with this |
| # file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| # |
| # ToCAsciiArray and ToCArray are from V8's js2c.py. |
| # |
| # Copyright 2012 the V8 project authors. All rights reserved. |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following |
| # disclaimer in the documentation and/or other materials provided |
| # with the distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived |
| # from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| # This utility converts JS files containing self-hosted builtins into a C |
| # header file that can be embedded into SpiderMonkey. |
| # |
| # It uses the C preprocessor to process its inputs. |
| |
| from __future__ import with_statement |
| import re, sys, os, fileinput, subprocess |
| import shlex |
| from optparse import OptionParser |
| |
| def ToCAsciiArray(lines): |
| result = [] |
| for chr in lines: |
| value = ord(chr) |
| assert value < 128 |
| result.append(str(value)) |
| return ", ".join(result) |
| |
| def ToCArray(lines): |
| result = [] |
| for chr in lines: |
| result.append(str(ord(chr))) |
| return ", ".join(result) |
| |
| HEADER_TEMPLATE = """\ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| namespace js { |
| namespace selfhosted { |
| static const %(sources_type)s data[] = { %(sources_data)s }; |
| |
| static const %(sources_type)s * const %(sources_name)s = reinterpret_cast<const %(sources_type)s *>(data); |
| |
| uint32_t GetCompressedSize() { |
| return %(compressed_total_length)i; |
| } |
| |
| uint32_t GetRawScriptsSize() { |
| return %(raw_total_length)i; |
| } |
| } // selfhosted |
| } // js |
| """ |
| |
| def embed(cpp, msgs, sources, c_out, js_out, env): |
| # Clang seems to complain and not output anything if the extension of the |
| # input is not something it recognizes, so just fake a .h here. |
| tmp = 'selfhosted.js.h' |
| with open(tmp, 'wb') as output: |
| output.write('\n'.join([msgs] + ['#include "%(s)s"' % { 's': source } for source in sources])) |
| cmdline = cpp + ['-D%(k)s=%(v)s' % { 'k': k, 'v': env[k] } for k in env] + [tmp] |
| p = subprocess.Popen(cmdline, stdout=subprocess.PIPE) |
| processed = '' |
| for line in p.stdout: |
| if not line.startswith('#'): |
| processed += line |
| os.remove(tmp) |
| with open(js_out, 'w') as output: |
| output.write(processed) |
| with open(c_out, 'w') as output: |
| if 'USE_ZLIB' in env: |
| import zlib |
| compressed = zlib.compress(processed) |
| data = ToCArray(compressed) |
| output.write(HEADER_TEMPLATE % { |
| 'sources_type': 'unsigned char', |
| 'sources_data': data, |
| 'sources_name': 'compressedSources', |
| 'compressed_total_length': len(compressed), |
| 'raw_total_length': len(processed) |
| }) |
| else: |
| data = ToCAsciiArray(processed) |
| output.write(HEADER_TEMPLATE % { |
| 'sources_type': 'char', |
| 'sources_data': data, |
| 'sources_name': 'rawSources', |
| 'compressed_total_length': 0, |
| 'raw_total_length': len(processed) |
| }) |
| |
| def process_msgs(cpp, msgs): |
| # Clang seems to complain and not output anything if the extension of the |
| # input is not something it recognizes, so just fake a .h here. |
| tmp = 'selfhosted.msg.h' |
| with open(tmp, 'wb') as output: |
| output.write("""\ |
| #define hash # |
| #define id(x) x |
| #define hashify(x) id(hash)x |
| #define MSG_DEF(name, id, argc, ex, msg) hashify(define) name id |
| #include "%(msgs)s" |
| """ % { 'msgs': msgs }) |
| p = subprocess.Popen(cpp + [tmp], stdout=subprocess.PIPE) |
| processed = p.communicate()[0] |
| os.remove(tmp) |
| return processed |
| |
| def main(): |
| env = {} |
| def define_env(option, opt, value, parser): |
| pair = value.split('=', 1) |
| if len(pair) == 1: |
| pair.append(1) |
| env[pair[0]] = pair[1] |
| p = OptionParser(usage="%prog [options] file") |
| p.add_option('-D', action='callback', callback=define_env, type="string", |
| metavar='var=[val]', help='Define a variable') |
| p.add_option('-m', type='string', metavar='jsmsg', default='../js.msg', |
| help='js.msg file') |
| p.add_option('-p', type='string', metavar='cpp', help='Path to C preprocessor') |
| p.add_option('-o', type='string', metavar='filename', default='selfhosted.out.h', |
| help='C array header file') |
| p.add_option('-s', type='string', metavar='jsfilename', default='selfhosted.js', |
| help='Combined postprocessed JS file') |
| (options, sources) = p.parse_args() |
| if not (options.p and sources): |
| p.print_help() |
| exit(1) |
| cpp = shlex.split(options.p) |
| embed(cpp, process_msgs(cpp, options.m), |
| sources, options.o, options.s, env) |
| |
| if __name__ == "__main__": |
| main() |