314     return Vector<const char>(sources, %(total_length)i);
321   static const char sources[] = { %s };
331     if (index == %(i)i) return Vector<const char>(sources + %(offset)i, %(source_length)i);
341   """Build the chain of filter functions to be applied to the sources.
376 class Sources:  class
400         to treat different types of sources differently.
402         sources as JS strings.
405     An instance of Sources.
427   # Sort 'debugger' sources first.
440   result = Sources()
459 def BuildMetadata(sources, source_bytes, native_type):  argument
463     sources: A Sources instance with the prepared sources.
465         (The concatenation of all sources; might be compressed.)
472   raw_sources = "".join(sources.modules)
474   # The sources are expected to be ASCII-only.
482   for i in xrange(len(sources.modules)):
483     native_name = "native %s.js" % sources.names[i]
486         "id": sources.names[i],
490         "source_length": len(sources.modules[i]),
495     offset += len(sources.modules[i])
499     "builtin_count": len(sources.modules),
500     "debugger_count": sum(sources.is_debugger_id),
535 def WriteStartupBlob(sources, startup_blob):  argument
540     sources: A Sources instance with the prepared sources.
545   debug_sources = sum(sources.is_debugger_id);
548     PutStr(output, sources.names[i]);
549     PutStr(output, sources.modules[i]);
551   PutInt(output, len(sources.names) - debug_sources)
552   for i in xrange(debug_sources, len(sources.names)):
553     PutStr(output, sources.names[i]);
554     PutStr(output, sources.modules[i]);
559 def JS2C(sources, target, native_type, raw_file, startup_blob, emit_js):  argument
560   prepared_sources = PrepareSources(sources, native_type, emit_js)
585                     help="file to write the processed sources array to.")
592   parser.set_usage("""js2c out.cc type sources.js ...
595         sources.js: JS internal sources or macros.py.""")