# 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.
import errno import os import re import shlex import subprocess import sys
import buildconfig import mozpack.path as mozpath from mozfile import which
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(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/. */
def preprocess(cxx, preprocessorOption, source, args=[]): ifnot os.path.exists(cxx[0]):
binary = cxx[0]
cxx[0] = which(binary) ifnot cxx[0]: raise OSError(errno.ENOENT, "%s not found on PATH" % binary)
# Clang seems to complain and not output anything if the extension of the # input is not something it recognizes, so just fake a .cpp here.
tmpIn = "self-hosting-cpp-input.cpp"
tmpOut = "self-hosting-preprocessed.pp"
outputArg = shlex.split(preprocessorOption + tmpOut)
with open(tmpIn, "wb") as input:
input.write(source.encode("utf-8"))
if os.environ.get("BUILD_VERBOSE_LOG"):
print("Executing:", " ".join(cxx + outputArg + args + [tmpIn]))
result = subprocess.Popen(cxx + outputArg + args + [tmpIn]).wait() if result != 0:
sys.exit(result) with open(tmpOut, "r") as output:
processed = output.read()
os.remove(tmpIn)
os.remove(tmpOut) return processed
def messages(jsmsg):
defines = [] for line in open(jsmsg):
match = re.match(r"MSG_DEF\((JSMSG_(\w+))", line) if match:
defines.append("#define %s %i" % (match.group(1), len(defines))) continue
# Make sure that MSG_DEF isn't preceded by whitespace assertnot line.strip().startswith("MSG_DEF")
# This script doesn't support preprocessor assertnot line.strip().startswith("#") return"\n".join(defines)
def get_config_defines(buildconfig): # Collect defines equivalent to ACDEFINES and add MOZ_DEBUG_DEFINES.
env = buildconfig.defines["ALLDEFINES"] for define in buildconfig.substs["MOZ_DEBUG_DEFINES"]:
env[define] = 1 return env
def process_inputs(namespace, c_out, msg_file, inputs):
deps = [path for path in inputs if path.endswith(".h") or path.endswith(".h.js")]
sources = [
path for path in inputs if path.endswith(".js") andnot path.endswith(".h.js")
] assert len(deps) + len(sources) == len(inputs)
cxx = shlex.split(buildconfig.substs["CXX"])
pp_option = buildconfig.substs["PREPROCESS_OPTION"]
cppflags = buildconfig.substs["OS_CPPFLAGS"]
cppflags += shlex.split(buildconfig.substs["WARNINGS_AS_ERRORS"])
env = get_config_defines(buildconfig)
js_path = re.sub(r"\.out\.h$", "", c_out.name) + ".js"
msgs = messages(msg_file) with open(js_path, "w") as js_out:
embed(cxx, pp_option, cppflags, msgs, sources, c_out, js_out, namespace, env)
def generate_selfhosted(c_out, msg_file, *inputs): # Called from moz.build to embed selfhosted JS.
process_inputs("selfhosted", c_out, msg_file, inputs)
def generate_shellmoduleloader(c_out, msg_file, *inputs): # Called from moz.build to embed shell module loader JS.
process_inputs("moduleloader", c_out, msg_file, inputs)
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