lang: Add a for loop statement for iterating over a list

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This adds a for statement which is used to iterate over a list with a
body of statements. This is an important data transformation tool which
should be used sparingly, but is important to have.

An import statement inside of a for loop is not currently supported. We
have a simple hack to detect the obvious cases, but more deeply nested
scenarios probably won't be caught, and you'll get an obscure error
message if you try to do this.

This was incredibly challenging to get right, and it's all thanks to Sam
for his brilliance.

Co-authored-by: Samuel Gélineau <gelisam@gmail.com>

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This commit is contained in:

James Shubin

2025-03-04 21:55:29 -05:00

parent c456a5ab97

commit cf7e73bbf6

63 changed files with 2814 additions and 203 deletions

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lang/ast/structs.go

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