swift: Support yyfn:throw #540
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Adds support for yyfn:throw to the Swift syntax, allowing the user to throw types that conform to the Error protocol within functions generated by the recursive-functions code model. Non-empty settings of the `re2c:yyfn:throw` property are appended to generated function definitions between parameters and the return type, and generated function calls are prefixed with "try ". The 'test/codegen/swift/recursive_functions/advanced.re' test has been updated to test the new functionality as well as demonstrate practical use of throwing functions in the recursive-functions model for handling runtime errors.
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Adds support for yyfn:throw to the Swift syntax, allowing the user to throw types that conform to the Error protocol within functions generated by the recursive-functions code model. Non-empty settings of the
re2c:yyfn:throwproperty are appended to generated function definitions between parameters and the return type, and generated function calls are prefixed with "try ".The 'test/codegen/swift/recursive_functions/advanced.re' test has been updated to test the new functionality as well as demonstrate practical use of throwing functions in the recursive-functions model for handling runtime errors.