Re: [quicwg/base-drafts] VarInt decoding pseudocode (#4316)

[Mike Bishop <[e-mail]>]

@MikeBishop commented on this pull request.



> +read from a stream of bytes.  The function ReadVarint takes a single argument, a
+sequence of bytes which can be read in network byte order.
+
+~~~
+ReadVarint(data):
+  // The length of variable-length integers is encoded in the
+  // first two bits of the first byte.
+  v = data.next_byte()
+  length = (1 << (v >> 6))
+
+  // Once the length is known, remove these bits and read any
+  // remaining bytes.
+  v = v & 0x3f
+  repeat length-1 times:
+    v = (v << 8) + data.next_byte()
+  return v

Yes, but I'm not sure that's necessary to mention.  We haven't changed it over the course of the algorithm.

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