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99 lines
4.1 KiB
Python
99 lines
4.1 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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import os
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import cPickle
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from Configuration import Configuration
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from Codegen import CGBindingRoot, replaceFileIfChanged, CGEventRoot
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from mozbuild.makeutil import Makefile
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from mozbuild.pythonutil import iter_modules_in_path
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from buildconfig import topsrcdir
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def generate_binding_files(config, outputprefix, srcprefix, webidlfile,
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generatedEventsWebIDLFiles):
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"""
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|config| Is the configuration object.
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|outputprefix| is a prefix to use for the header guards and filename.
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"""
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depsname = ".deps/" + outputprefix + ".pp"
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root = CGBindingRoot(config, outputprefix, webidlfile)
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replaceFileIfChanged(outputprefix + ".h", root.declare())
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replaceFileIfChanged(outputprefix + ".cpp", root.define())
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if webidlfile in generatedEventsWebIDLFiles:
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eventName = webidlfile[:-len(".webidl")]
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generatedEvent = CGEventRoot(config, eventName)
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replaceFileIfChanged(eventName + ".h", generatedEvent.declare())
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replaceFileIfChanged(eventName + ".cpp", generatedEvent.define())
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mk = Makefile()
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# NOTE: it's VERY important that we output dependencies for the FooBinding
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# file here, not for the header or generated cpp file. These dependencies
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# are used later to properly determine changedDeps and prevent rebuilding
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# too much. See the comment explaining $(binding_dependency_trackers) in
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# Makefile.in.
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rule = mk.create_rule([outputprefix])
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rule.add_dependencies(os.path.join(srcprefix, x) for x in root.deps())
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rule.add_dependencies(iter_modules_in_path(topsrcdir))
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with open(depsname, 'w') as f:
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mk.dump(f)
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def main():
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# Parse arguments.
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from optparse import OptionParser
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usagestring = "usage: %prog [header|cpp] configFile outputPrefix srcPrefix webIDLFile"
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o = OptionParser(usage=usagestring)
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o.add_option("--verbose-errors", action='store_true', default=False,
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help="When an error happens, display the Python traceback.")
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(options, args) = o.parse_args()
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configFile = os.path.normpath(args[0])
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srcPrefix = os.path.normpath(args[1])
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# Load the configuration
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f = open('ParserResults.pkl', 'rb')
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config = cPickle.load(f)
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f.close()
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def readFile(f):
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file = open(f, 'rb')
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try:
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contents = file.read()
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finally:
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file.close()
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return contents
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allWebIDLFiles = readFile(args[2]).split()
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generatedEventsWebIDLFiles = readFile(args[3]).split()
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changedDeps = readFile(args[4]).split()
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if all(f.endswith("Binding") or f == "ParserResults.pkl" for f in changedDeps):
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toRegenerate = filter(lambda f: f.endswith("Binding"), changedDeps)
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if len(toRegenerate) == 0 and len(changedDeps) == 1:
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# Work around build system bug 874923: if we get here that means
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# that changedDeps contained only one entry and it was
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# "ParserResults.pkl". That should never happen: if the
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# ParserResults.pkl changes then either one of the globalgen files
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# changed (in which case we wouldn't be in this "only
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# ParserResults.pkl and *Binding changed" code) or some .webidl
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# files changed (and then the corresponding *Binding files should
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# show up in changedDeps). Since clearly the build system is
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# confused, just regenerate everything to be safe.
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toRegenerate = allWebIDLFiles
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else:
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toRegenerate = map(lambda f: f[:-len("Binding")] + ".webidl",
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toRegenerate)
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else:
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toRegenerate = allWebIDLFiles
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for webIDLFile in toRegenerate:
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assert webIDLFile.endswith(".webidl")
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outputPrefix = webIDLFile[:-len(".webidl")] + "Binding"
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generate_binding_files(config, outputPrefix, srcPrefix, webIDLFile,
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generatedEventsWebIDLFiles);
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if __name__ == '__main__':
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main()
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