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Adds ability to declare type on "For Each" loop item#1614

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TwitchBronBron merged 5 commits intov1from
for_loop_item_type
Jan 28, 2026
Merged

Adds ability to declare type on "For Each" loop item#1614
TwitchBronBron merged 5 commits intov1from
for_loop_item_type

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@markwpearce markwpearce commented Jan 27, 2026 •
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  • Update parser to allow syntax like:
for each item as string in myList
   
end for

  • Convert for loop body to use a pocket table, to allow proper typing of loop item, so it is properly defined as Union of UnintializedType or

  • Add "assignment type mismatch" diagnostic for when the decalred type is not compatible with the inferred type of the array loop item. eg:

for each item as string in [1, 2, 3]
  • Adds validation on doing a for-each on a non-iterable type
  • Default iterable type of built-in iterable types are honored: roByteArray -> integer and roAssociativeArray-> string:
for each b in createObject("roByteArray").fromHexString("00FF1001")
   print b ' b is an integer
end for

for each key in {name: "John", age: 42}
  print key ' key is a string
end for

@markwpearce markwpearce added this to the v1.0.0 milestone Jan 27, 2026
@markwpearce markwpearce changed the base branch from master to v1 January 27, 2026 14:42
@markwpearce markwpearce marked this pull request as ready for review January 28, 2026 15:52
@TwitchBronBron TwitchBronBron merged commit b70f479 into v1 Jan 28, 2026
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@TwitchBronBron TwitchBronBron deleted the for_loop_item_type branch January 28, 2026 18:55
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