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comparison: ipc/ipdl/ipdl.py
ipc/ipdl/ipdl.py
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:c0904db4af50 |
|---|---|
| 1 # This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 # License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 # file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 | |
| 5 import optparse, os, re, sys | |
| 6 from cStringIO import StringIO | |
| 7 from mozbuild.pythonutil import iter_modules_in_path | |
| 8 import mozpack.path as mozpath | |
| 9 import itertools | |
| 10 | |
| 11 import ipdl | |
| 12 | |
| 13 def log(minv, fmt, *args): | |
| 14 if _verbosity >= minv: | |
| 15 print fmt % args | |
| 16 | |
| 17 # process command line | |
| 18 | |
| 19 op = optparse.OptionParser(usage='ipdl.py [options] IPDLfiles...') | |
| 20 op.add_option('-I', '--include', dest='includedirs', default=[ ], | |
| 21 action='append', | |
| 22 help='Additional directory to search for included protocol specifications') | |
| 23 op.add_option('-v', '--verbose', dest='verbosity', default=1, action='count', | |
| 24 help='Verbose logging (specify -vv or -vvv for very verbose logging)') | |
| 25 op.add_option('-q', '--quiet', dest='verbosity', action='store_const', const=0, | |
| 26 help="Suppress logging output") | |
| 27 op.add_option('-d', '--outheaders-dir', dest='headersdir', default='.', | |
| 28 help="""Directory into which C++ headers will be generated. | |
| 29 A protocol Foo in the namespace bar will cause the headers | |
| 30 dir/bar/Foo.h, dir/bar/FooParent.h, and dir/bar/FooParent.h | |
| 31 to be generated""") | |
| 32 op.add_option('-o', '--outcpp-dir', dest='cppdir', default='.', | |
| 33 help="""Directory into which C++ sources will be generated | |
| 34 A protocol Foo in the namespace bar will cause the sources | |
| 35 cppdir/FooParent.cpp, cppdir/FooChild.cpp | |
| 36 to be generated""") | |
| 37 | |
| 38 | |
| 39 options, files = op.parse_args() | |
| 40 _verbosity = options.verbosity | |
| 41 headersdir = options.headersdir | |
| 42 cppdir = options.cppdir | |
| 43 includedirs = [ os.path.abspath(incdir) for incdir in options.includedirs ] | |
| 44 | |
| 45 if not len(files): | |
| 46 op.error("No IPDL files specified") | |
| 47 | |
| 48 ipcmessagestartpath = os.path.join(headersdir, 'IPCMessageStart.h') | |
| 49 | |
| 50 # Compiling the IPDL files can take a long time, even on a fast machine. | |
| 51 # Check to see whether we need to do any work. | |
| 52 latestipdlmod = max(os.stat(f).st_mtime | |
| 53 for f in itertools.chain(files, | |
| 54 iter_modules_in_path(mozpath.dirname(__file__)))) | |
| 55 | |
| 56 def outputModTime(f): | |
| 57 # A non-existant file is newer than everything. | |
| 58 if not os.path.exists(f): | |
| 59 return 0 | |
| 60 return os.stat(f).st_mtime | |
| 61 | |
| 62 # Because the IPDL headers are placed into directories reflecting their | |
| 63 # namespace, collect a list here so we can easily map output names without | |
| 64 # parsing the actual IPDL files themselves. | |
| 65 headersmap = {} | |
| 66 for (path, dirs, headers) in os.walk(headersdir): | |
| 67 for h in headers: | |
| 68 base = os.path.basename(h) | |
| 69 if base in headersmap: | |
| 70 root, ext = os.path.splitext(base) | |
| 71 print >>sys.stderr, 'A protocol named', root, 'exists in multiple namespaces' | |
| 72 sys.exit(1) | |
| 73 headersmap[base] = os.path.join(path, h) | |
| 74 | |
| 75 def outputfiles(f): | |
| 76 base = os.path.basename(f) | |
| 77 root, ext = os.path.splitext(base) | |
| 78 | |
| 79 suffixes = [''] | |
| 80 if ext == '.ipdl': | |
| 81 suffixes += ['Child', 'Parent'] | |
| 82 | |
| 83 for suffix in suffixes: | |
| 84 yield os.path.join(cppdir, "%s%s.cpp" % (root, suffix)) | |
| 85 header = "%s%s.h" % (root, suffix) | |
| 86 # If the header already exists on disk, use that. Otherwise, | |
| 87 # just claim that the header is found in headersdir. | |
| 88 if header in headersmap: | |
| 89 yield headersmap[header] | |
| 90 else: | |
| 91 yield os.path.join(headersdir, header) | |
| 92 | |
| 93 def alloutputfiles(): | |
| 94 for f in files: | |
| 95 for s in outputfiles(f): | |
| 96 yield s | |
| 97 yield ipcmessagestartpath | |
| 98 | |
| 99 earliestoutputmod = min(outputModTime(f) for f in alloutputfiles()) | |
| 100 | |
| 101 if latestipdlmod < earliestoutputmod: | |
| 102 sys.exit(0) | |
| 103 | |
| 104 log(2, 'Generated C++ headers will be generated relative to "%s"', headersdir) | |
| 105 log(2, 'Generated C++ sources will be generated in "%s"', cppdir) | |
| 106 | |
| 107 allprotocols = [] | |
| 108 | |
| 109 def normalizedFilename(f): | |
| 110 if f == '-': | |
| 111 return '<stdin>' | |
| 112 return f | |
| 113 | |
| 114 # First pass: parse and type-check all protocols | |
| 115 for f in files: | |
| 116 log(2, os.path.basename(f)) | |
| 117 filename = normalizedFilename(f) | |
| 118 if f == '-': | |
| 119 fd = sys.stdin | |
| 120 else: | |
| 121 fd = open(f) | |
| 122 | |
| 123 specstring = fd.read() | |
| 124 fd.close() | |
| 125 | |
| 126 ast = ipdl.parse(specstring, filename, includedirs=includedirs) | |
| 127 if ast is None: | |
| 128 print >>sys.stderr, 'Specification could not be parsed.' | |
| 129 sys.exit(1) | |
| 130 | |
| 131 log(2, 'checking types') | |
| 132 if not ipdl.typecheck(ast): | |
| 133 print >>sys.stderr, 'Specification is not well typed.' | |
| 134 sys.exit(1) | |
| 135 | |
| 136 if _verbosity > 2: | |
| 137 log(3, ' pretty printed code:') | |
| 138 ipdl.genipdl(ast, codedir) | |
| 139 | |
| 140 # Second pass: generate code | |
| 141 for f in files: | |
| 142 # Read from parser cache | |
| 143 filename = normalizedFilename(f) | |
| 144 ast = ipdl.parse(None, filename, includedirs=includedirs) | |
| 145 ipdl.gencxx(filename, ast, headersdir, cppdir) | |
| 146 | |
| 147 if ast.protocol: | |
| 148 allprotocols.append('%sMsgStart' % ast.protocol.name) | |
| 149 | |
| 150 | |
| 151 allprotocols.sort() | |
| 152 | |
| 153 ipcmsgstart = StringIO() | |
| 154 | |
| 155 print >>ipcmsgstart, """ | |
| 156 // CODE GENERATED by ipdl.py. Do not edit. | |
| 157 | |
| 158 #ifndef IPCMessageStart_h | |
| 159 #define IPCMessageStart_h | |
| 160 | |
| 161 enum IPCMessageStart { | |
| 162 """ | |
| 163 | |
| 164 for name in allprotocols: | |
| 165 print >>ipcmsgstart, " %s," % name | |
| 166 print >>ipcmsgstart, " %sChild," % name | |
| 167 | |
| 168 print >>ipcmsgstart, """ | |
| 169 LastMsgIndex | |
| 170 }; | |
| 171 | |
| 172 static_assert(LastMsgIndex <= 65536, "need to update IPC_MESSAGE_MACRO"); | |
| 173 | |
| 174 #endif // ifndef IPCMessageStart_h | |
| 175 """ | |
| 176 | |
| 177 ipdl.writeifmodified(ipcmsgstart.getvalue(), ipcmessagestartpath) |
