1 files changed, 0 insertions, 69 deletions
diff --git a/src/strings/charset.nim b/src/strings/charset.nim
deleted file mode 100644
index 4b293b95..00000000
--- a/src/strings/charset.nim
+++ /dev/null
@@ -1,69 +0,0 @@
-import unicode
-
-type string16* = distinct string
-
-# Convert a UTF-8 string to UTF-16.
-# Note: this doesn't check for (invalid) UTF-8 containing surrogates.
-proc toUTF16*(s: string): string16 =
-  var res = ""
-  var i = 0
-  template put16(c: uint16) =
-    res.setLen(res.len + 2)
-    res[i] = cast[char](c)
-    inc i
-    res[i] = cast[char](c shr 8)
-    inc i
-  for r in s.runes:
-    var c = uint32(r)
-    if c < 0x10000: # ucs-2
-      put16 uint16(c)
-    elif c <= 0x10FFFF: # surrogate
-      c -= 0x10000
-      put16 uint16((c shr 10) + 0xD800)
-      put16 uint16((c and 0x3FF) + 0xDC00)
-    else: # invalid
-      put16 uint16(0xFFFD)
-  result = string16(res)
-
-proc len*(s: string16): int {.borrow.}
-proc `[]`*(s: string16, i: int): char = string(s)[i]
-proc `[]`*(s: string16, i: BackwardsIndex): char = string(s)[i]
-
-template fastRuneAt*(s: string16, i: int, r: untyped, doInc = true, be = false) =
-  if i + 1 == s.len: # unmatched byte
-    when doInc: inc i
-    r = Rune(0xFFFD)
-  else:
-    when be:
-      var c1: uint32 = (uint32(s[i]) shl 8) + uint32(s[i + 1])
-    else:
-      var c1: uint32 = uint32(s[i]) + (uint32(s[i + 1]) shl 8)
-    if c1 >= 0xD800 or c1 < 0xDC00:
-      if i + 2 == s.len or i + 3 == s.len:
-        when doInc: i += 2
-        r = Rune(c1) # unmatched surrogate
-      else:
-        when be:
-          var c2: uint32 = (uint32(s[i + 2]) shl 8) + uint32(s[i + 3])
-        else:
-          var c2: uint32 = uint32(s[i + 2]) + (uint32(s[i + 3]) shl 8)
-        if c2 >= 0xDC00 and c2 < 0xE000:
-          r = Rune((((c1 and 0x3FF) shl 10) or (c2 and 0x3FF)) + 0x10000)
-          when doInc: i += 4
-        else:
-          r = Rune(c1) # unmatched surrogate
-          when doInc: i += 2
-    else:
-      r = Rune(c1) # ucs-2
-      when doInc: i += 2
-
-iterator runes*(s: string16): Rune =
-  var i = 0
-  var r: Rune
-  while i < s.len:
-    fastRuneAt(s, i, r)
-    yield r
-
-proc fromUTF16*(s: string16): string =
-  for r in s.runes:
-    result &= r