Switch to using optional return values for list indexing.

6 files changed, 32 insertions, 20 deletions

diff --git a/lib/base64/CHANGES.md b/lib/base64/CHANGES.md
index 42ae752c..6c67c96d 100644
--- a/lib/base64/CHANGES.md
+++ b/lib/base64/CHANGES.md
@@ -1,5 +1,9 @@
 # Version History
 
+## v1.1
+
+Update syntax for Tomo.
+
 ## v1.0
 
 Initial version
diff --git a/lib/base64/base64.tm b/lib/base64/base64.tm
index bf512a83..f31cfbc5 100644
--- a/lib/base64/base64.tm
+++ b/lib/base64/base64.tm
@@ -33,28 +33,28 @@ lang Base64
         dest := Int64(1)
         while src + 2 <= Int64(bytes.length)
             chunk24 := (
-                (Int32(bytes[src]) <<< 16) or (Int32(bytes[src+1]) <<< 8) or Int32(bytes[src+2])
+                (Int32(bytes[src]!) <<< 16) or (Int32(bytes[src+1]!) <<< 8) or Int32(bytes[src+2]!)
             )
             src += 3
 
-            output[dest]   = _enc[1 + ((chunk24 >>> 18) and 0b111111)]
-            output[dest+1] = _enc[1 + ((chunk24 >>> 12) and 0b111111)]
-            output[dest+2] = _enc[1 + ((chunk24 >>> 6) and 0b111111)]
-            output[dest+3] = _enc[1 + (chunk24 and 0b111111)]
+            output[dest]   = _enc[1 + ((chunk24 >>> 18) and 0b111111)]!
+            output[dest+1] = _enc[1 + ((chunk24 >>> 12) and 0b111111)]!
+            output[dest+2] = _enc[1 + ((chunk24 >>> 6) and 0b111111)]!
+            output[dest+3] = _enc[1 + (chunk24 and 0b111111)]!
             dest += 4
 
         if src + 1 == bytes.length
             chunk16 := (
-                (Int32(bytes[src]) <<< 8) or Int32(bytes[src+1])
+                (Int32(bytes[src]!) <<< 8) or Int32(bytes[src+1]!)
             )
-            output[dest]   = _enc[1 + ((chunk16 >>> 10) and 0b11111)]
-            output[dest+1] = _enc[1 + ((chunk16 >>> 4) and 0b111111)]
-            output[dest+2] = _enc[1 + ((chunk16 <<< 2)and 0b111111)]
+            output[dest]   = _enc[1 + ((chunk16 >>> 10) and 0b11111)]!
+            output[dest+1] = _enc[1 + ((chunk16 >>> 4) and 0b111111)]!
+            output[dest+2] = _enc[1 + ((chunk16 <<< 2)and 0b111111)]!
             output[dest+3] = _EQUAL_BYTE
         else if src == bytes.length
-            chunk8 := Int32(bytes[src])
-            output[dest]   = _enc[1 + ((chunk8 >>> 2) and 0b111111)]
-            output[dest+1] = _enc[1 + ((chunk8 <<< 4) and 0b111111)]
+            chunk8 := Int32(bytes[src]!)
+            output[dest]   = _enc[1 + ((chunk8 >>> 2) and 0b111111)]!
+            output[dest+1] = _enc[1 + ((chunk8 <<< 4) and 0b111111)]!
             output[dest+2] = _EQUAL_BYTE
             output[dest+3] = _EQUAL_BYTE
 
@@ -70,10 +70,10 @@ lang Base64
         dest := Int64(1)
         while src + 3 <= Int64(bytes.length)
             chunk24 := (
-                (Int32(_dec[1+bytes[src]]) <<< 18) or
-                (Int32(_dec[1+bytes[src+1]]) <<< 12) or
-                (Int32(_dec[1+bytes[src+2]]) <<< 6) or
-                Int32(_dec[1+bytes[src+3]])
+                (Int32(_dec[1+bytes[src]!]!) <<< 18) or
+                (Int32(_dec[1+bytes[src+1]!]!) <<< 12) or
+                (Int32(_dec[1+bytes[src+2]!]!) <<< 6) or
+                Int32(_dec[1+bytes[src+3]!]!)
             )
             src += 4
 
@@ -82,7 +82,7 @@ lang Base64
             output[dest+2] = Byte(chunk24 and 0xFF)
             dest += 3
 
-        while output[-1] == 0xFF
+        while output[-1]! == 0xFF
             output[] = output.to(-2)
 
         return output[]
diff --git a/lib/json/CHANGES.md b/lib/json/CHANGES.md
index 42ae752c..6c67c96d 100644
--- a/lib/json/CHANGES.md
+++ b/lib/json/CHANGES.md
@@ -1,5 +1,9 @@
 # Version History
 
+## v1.1
+
+Update syntax for Tomo.
+
 ## v1.0
 
 Initial version
diff --git a/lib/json/json.tm b/lib/json/json.tm
index 8127ce52..ab9b95dd 100644
--- a/lib/json/json.tm
+++ b/lib/json/json.tm
@@ -79,7 +79,7 @@ enum JSON(
                         string ++= esc
                         pos += 2
                     else if m := text.matching_pattern($Pat/u{4 digit}/)
-                        string ++= Text.from_codepoints([Int32.parse(m.captures[1])!])
+                        string ++= Text.from_codepoints([Int32.parse(m.captures[1]!)!])
                         pos += 1 + m.text.length
                     else
                         if remainder
diff --git a/lib/uuid/CHANGES.md b/lib/uuid/CHANGES.md
index 42ae752c..6c67c96d 100644
--- a/lib/uuid/CHANGES.md
+++ b/lib/uuid/CHANGES.md
@@ -1,5 +1,9 @@
 # Version History
 
+## v1.1
+
+Update syntax for Tomo.
+
 ## v1.0
 
 Initial version
diff --git a/lib/uuid/uuid.tm b/lib/uuid/uuid.tm
index f2be618e..ebc52259 100644
--- a/lib/uuid/uuid.tm
+++ b/lib/uuid/uuid.tm
@@ -4,8 +4,8 @@ use time_v1.0
 lang UUID
     func v4(-> UUID) # Random UUID
         bytes := &random.bytes(16)
-        bytes[7; unchecked] = 0x40 or (bytes[7; unchecked] and 0x0F)
-        bytes[9; unchecked] = (Byte(random.int8(0x8, 0xB)) << 4) or (bytes[9; unchecked] and 0x0F)
+        bytes[7] = 0x40 or (bytes[7]! and 0x0F)
+        bytes[9] = (Byte(random.int8(0x8, 0xB)) << 4) or (bytes[9]! and 0x0F)
         hex := "".join([b.hex() for b in bytes])
         uuid := "$(hex.slice(1, 8))-$(hex.slice(9, 12))-$(hex.slice(13, 16))-$(hex.slice(17, -1))"
         return UUID.from_text(uuid)