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typecheck: preserve later method arity checks

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Hermes Agent
2026-09-02 07:53:04 +00:00
parent 0839bdeb5d
commit b8385f675a
7 changed files with 23 additions and 5 deletions
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docs/ADVANCED_STATIC_TYPING.md
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@@ -182,7 +182,7 @@ Output:
Method Player.add only accepts 1 argument, but this call gives 2. Remove the extra argument.
```
Both sides of this narrow method foundation are covered by validation: `tests/typecheck_method_good.claro` checks that `DO player.add 5` is accepted, `tests/typecheck_method_bad.claro` checks the friendly wrong-type diagnostic, `tests/typecheck_method_missing_arg_bad.claro` checks the missing checked-argument diagnostic, and `tests/typecheck_method_extra_arg_bad.claro` checks the extra-argument diagnostic.
Both sides of this narrow method foundation are covered by validation: `tests/typecheck_method_good.claro` checks that `DO player.add 5` is accepted, `tests/typecheck_method_bad.claro` checks the friendly wrong-type diagnostic, `tests/typecheck_method_missing_arg_bad.claro` checks the missing checked-argument diagnostic, and `tests/typecheck_method_extra_arg_bad.claro` checks the extra-argument diagnostic. Multi-method class examples are covered too, including the extra-argument case where the checked method appears after another method in the same class.
If the method call comes before the object is created, the type checker now gives the learner the missing setup step. The modern `DO` form and the older compatibility `CALL ... WITH` form both get this guidance, even when the method name is also a typo: