expose trap error from RuntimeError #2026
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ailisp
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syrusakbary
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Jan 15, 2021
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2026: expose trap error from RuntimeError r=syrusakbary a=ailisp <!-- Prior to submitting a PR, review the CONTRIBUTING.md document for recommendations on how to test: https://github.com/wasmerio/wasmer/blob/master/CONTRIBUTING.md#pull-requests --> # Description <!-- Provide details regarding the change including motivation, links to related issues, and the context of the PR. --> Internal of RuntimeError is private, user can know UserError via `downcast`, but user isn't able to tell the trap code if it's a `Trap`. This PR expose trap code via `RuntimeError#to_trap`. (And, if both downcast returns error and to_trap returns None, user will know it's a `RuntimeError::Generic`, which can be shown by `error.message()`, so there's no need to expose `RuntimeError::Generic` case) # Review - [] Add a short description of the the change to the CHANGELOG.md file Co-authored-by: Bo Yao <bo@nearprotocol.com>
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Description
Internal of RuntimeError is private, user can know UserError via
downcast, but user isn't able to tell the trap code if it's aTrap. This PR expose trap code viaRuntimeError#to_trap. (And, if both downcast returns error and to_trap returns None, user will know it's aRuntimeError::Generic, which can be shown byerror.message(), so there's no need to exposeRuntimeError::Genericcase)Review