Function ensureDecodeable

Wraps a text-based iopipe to make sure all code units are decodeable.

auto auto ensureDecodeable(Chain) (
  Chain c
)
if (isIopipe!Chain && isSomeChar!(ElementEncodingType!(WindowType!Chain)));

When an iopipe is made up of character types, in some cases a slice of the window may not be completely decodeable. For example, a wchar iopipe may have only one half of a surrogate pair at the end of the window.

This function generates an iopipe that only allows completely decodeable sequences to be released to the next iopipe.

Parameters

NameDescription
c The iopipe whose element type is one of char, wchar, or dchar.

Returns

An appropriate iopipe that ensures decodeability. Note that dchar iopipes are always decodeable, so the result is simply a return of the input.