Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/third_party/rust/libloading/src/error.rs b/third_party/rust/libloading/src/error.rs
new file mode 100644
index 0000000000..bd70ec39ce
--- /dev/null
+++ b/third_party/rust/libloading/src/error.rs
@@ -0,0 +1,130 @@
+use std::ffi::CString;
+
+/// A `dlerror` error.
+pub struct DlDescription(pub(crate) CString);
+
+impl std::fmt::Debug for DlDescription {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        std::fmt::Debug::fmt(&self.0, f)
+    }
+}
+
+/// A Windows API error.
+pub struct WindowsError(pub(crate) std::io::Error);
+
+impl std::fmt::Debug for WindowsError {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        std::fmt::Debug::fmt(&self.0, f)
+    }
+}
+
+/// Errors.
+#[derive(Debug)]
+#[non_exhaustive]
+pub enum Error {
+    /// The `dlopen` call failed.
+    DlOpen {
+        /// The source error.
+        desc: DlDescription
+    },
+    /// The `dlopen` call failed and system did not report an error.
+    DlOpenUnknown,
+    /// The `dlsym` call failed.
+    DlSym {
+        /// The source error.
+        desc: DlDescription
+    },
+    /// The `dlsym` call failed and system did not report an error.
+    DlSymUnknown,
+    /// The `dlclose` call failed.
+    DlClose {
+        /// The source error.
+        desc: DlDescription
+    },
+    /// The `dlclose` call failed and system did not report an error.
+    DlCloseUnknown,
+    /// The `LoadLibraryW` call failed.
+    LoadLibraryExW {
+        /// The source error.
+        source: WindowsError
+    },
+    /// The `LoadLibraryW` call failed and system did not report an error.
+    LoadLibraryExWUnknown,
+    /// The `GetModuleHandleExW` call failed.
+    GetModuleHandleExW {
+        /// The source error.
+        source: WindowsError
+    },
+    /// The `GetModuleHandleExW` call failed and system did not report an error.
+    GetModuleHandleExWUnknown,
+    /// The `GetProcAddress` call failed.
+    GetProcAddress {
+        /// The source error.
+        source: WindowsError
+    },
+    /// The `GetProcAddressUnknown` call failed and system did not report an error.
+    GetProcAddressUnknown,
+    /// The `FreeLibrary` call failed.
+    FreeLibrary {
+        /// The source error.
+        source: WindowsError
+    },
+    /// The `FreeLibrary` call failed and system did not report an error.
+    FreeLibraryUnknown,
+    /// The requested type cannot possibly work.
+    IncompatibleSize,
+    /// Could not create a new CString.
+    CreateCString {
+        /// The source error.
+        source: std::ffi::NulError
+    },
+    /// Could not create a new CString from bytes with trailing null.
+    CreateCStringWithTrailing {
+        /// The source error.
+        source: std::ffi::FromBytesWithNulError
+    },
+}
+
+impl std::error::Error for Error {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        use Error::*;
+        match *self {
+            CreateCString { ref source } => Some(source),
+            CreateCStringWithTrailing { ref source } => Some(source),
+            LoadLibraryExW { ref source } => Some(&source.0),
+            GetProcAddress { ref source } => Some(&source.0),
+            FreeLibrary { ref source } => Some(&source.0),
+            _ => None,
+        }
+    }
+}
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        use Error::*;
+        match *self {
+            DlOpen { ref desc } => write!(f, "{}", desc.0.to_string_lossy()),
+            DlOpenUnknown => write!(f, "dlopen failed, but system did not report the error"),
+            DlSym { ref desc } => write!(f, "{}", desc.0.to_string_lossy()),
+            DlSymUnknown => write!(f, "dlsym failed, but system did not report the error"),
+            DlClose { ref desc } => write!(f, "{}", desc.0.to_string_lossy()),
+            DlCloseUnknown => write!(f, "dlclose failed, but system did not report the error"),
+            LoadLibraryExW { .. } => write!(f, "LoadLibraryExW failed"),
+            LoadLibraryExWUnknown =>
+                write!(f, "LoadLibraryExW failed, but system did not report the error"),
+            GetModuleHandleExW { .. } => write!(f, "GetModuleHandleExW failed"),
+            GetModuleHandleExWUnknown =>
+                write!(f, "GetModuleHandleExWUnknown failed, but system did not report the error"),
+            GetProcAddress { .. } => write!(f, "GetProcAddress failed"),
+            GetProcAddressUnknown =>
+                write!(f, "GetProcAddress failed, but system did not report the error"),
+            FreeLibrary { .. } => write!(f, "FreeLibrary failed"),
+            FreeLibraryUnknown =>
+                write!(f, "FreeLibrary failed, but system did not report the error"),
+            CreateCString { .. } => write!(f, "could not create a C string from bytes"),
+            CreateCStringWithTrailing { .. } =>
+                write!(f, "could not create a C string from bytes with trailing null"),
+            IncompatibleSize => write!(f, "requested type cannot possibly work"),
+        }
+    }
+}