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Add Source Code Typing Tool #15211

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Vici37
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@Vici37 Vici37 commented Nov 21, 2024

This PR introduces a new crystal tool apply-types subcommand as described in this crystal forum post and initially implemented in this other repo as a stand alone tool. A tool that fully types a crystal file is obviously very tightly coupled with the language and compiler semantic, and so having this tool be part of the compiler itself feels like the correct direction.

That being said, I'm not 100% it's ready yet, but I do think it's ready enough at least to solicit feedback from anyone who is willing to provide it :)

OUTPUT
end

# it "parses, runs semantic, and types everything" do
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Commenting out this spec for now - it runs prelude as well as try to type everything the test specific file (but that test file isn't part of this PR yet).

# logic is in `crystal/tools/formatter.cr`.

class Crystal::Command
private def typer
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Entrypoint for the apply-types tool

@@ -0,0 +1,526 @@
module Crystal
class SourceTyper
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In the source-typer repo, a lot of these classes / structs are broken into their own files. Precedence in the compiler seems to be to put a lot of these smaller bits into a single file if they can all be more or less self contained.

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crysbot commented Nov 21, 2024

This pull request has been mentioned on Crystal Forum. There might be relevant details there:

https://forum.crystal-lang.org/t/exploring-the-compiler/7343/21

@nobodywasishere
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This is awesome!

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4 participants