300     return Vector<const char>(sources, %(total_length)i);
307   static const char sources[] = { %s };
317     if (index == %(i)i) return Vector<const char>(sources + %(offset)i, %(source_length)i);
327   """Build the chain of filter functions to be applied to the sources.
362 class Sources:  class
386         to treat different types of sources differently.
388         sources as JS strings.
391     An instance of Sources.
413   # Sort 'debugger' sources first.
426   result = Sources()
445 def BuildMetadata(sources, source_bytes, native_type):  argument
449     sources: A Sources instance with the prepared sources.
451         (The concatenation of all sources; might be compressed.)
458   raw_sources = "".join(sources.modules)
460   # The sources are expected to be ASCII-only.
468   for i in xrange(len(sources.modules)):
469     native_name = "native %s.js" % sources.names[i]
472         "id": sources.names[i],
476         "source_length": len(sources.modules[i]),
481     offset += len(sources.modules[i])
485     "builtin_count": len(sources.modules),
486     "debugger_count": sum(sources.is_debugger_id),
521 def WriteStartupBlob(sources, startup_blob):  argument
526     sources: A Sources instance with the prepared sources.
531   debug_sources = sum(sources.is_debugger_id);
534     PutStr(output, sources.names[i]);
535     PutStr(output, sources.modules[i]);
537   PutInt(output, len(sources.names) - debug_sources)
538   for i in xrange(debug_sources, len(sources.names)):
539     PutStr(output, sources.names[i]);
540     PutStr(output, sources.modules[i]);
545 def JS2C(sources, target, native_type, raw_file, startup_blob, emit_js):  argument
546   prepared_sources = PrepareSources(sources, native_type, emit_js)
571                     help="file to write the processed sources array to.")
578   parser.set_usage("""js2c out.cc type sources.js ...
581         sources.js: JS internal sources or macros.py.""")