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capture the language exception #181

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merged 2 commits into from
Aug 15, 2024
Merged

capture the language exception #181

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75c5697
capture the language exception
stevenbrix Aug 14, 2024
825ff86
check in generated code
stevenbrix Aug 15, 2024
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22 changes: 20 additions & 2 deletions swiftwinrt/Resources/Support/Error.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,24 @@ public struct Error : Swift.Error, CustomStringConvertible {
}
}

public func failWith(err: HRESULT) -> HRESULT {
return err
public func failWith(hr: HRESULT) -> HRESULT {
return hr
}

public func failWith(error: Swift.Error) -> HRESULT {
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var hresult: HRESULT = E_FAIL
let message = error.description
if let winrtError = error as? Error {
hresult = winrtError.hr
}

do {
try message.withHStringRef {
_ = RoOriginateLanguageException(hresult, $0, nil)
}
} catch {
_ = RoOriginateLanguageException(hresult, nil, nil)
}

return hresult
}
4 changes: 2 additions & 2 deletions swiftwinrt/code_writers.h
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Expand Up @@ -2780,7 +2780,7 @@ override % func _getABI<T>() -> UnsafeMutablePointer<T>? {

static void write_not_implementable_vtable_method(writer& w, function_def const& sig)
{
w.write("%: { _, % in return failWith(err: E_NOTIMPL) }", get_abi_name(sig), bind([&](writer& w) {
w.write("%: { _, % in return failWith(hr: E_NOTIMPL) }", get_abi_name(sig), bind([&](writer& w) {
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separator s{ w };
for (auto& param : sig.params)
{
Expand Down Expand Up @@ -2877,7 +2877,7 @@ override % func _getABI<T>() -> UnsafeMutablePointer<T>? {
w.write("return S_OK\n");
}
if (needs_try_catch) {
w.write("} catch { return failWith(err: E_FAIL) } \n");
w.write("} catch { return failWith(error: error) } \n");
w.m_indent -= 1;
}
w.write("}");
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