1 files changed, 0 insertions, 320 deletions
diff --git a/vendor/backtrace/src/print.rs b/vendor/backtrace/src/print.rs
deleted file mode 100644
index 395328a..0000000
--- a/vendor/backtrace/src/print.rs
+++ /dev/null
@@ -1,320 +0,0 @@
-#[cfg(feature = "std")]
-use super::{BacktraceFrame, BacktraceSymbol};
-use super::{BytesOrWideString, Frame, SymbolName};
-use core::ffi::c_void;
-use core::fmt;
-
-const HEX_WIDTH: usize = 2 + 2 * core::mem::size_of::<usize>();
-
-#[cfg(target_os = "fuchsia")]
-mod fuchsia;
-
-/// A formatter for backtraces.
-///
-/// This type can be used to print a backtrace regardless of where the backtrace
-/// itself comes from. If you have a `Backtrace` type then its `Debug`
-/// implementation already uses this printing format.
-pub struct BacktraceFmt<'a, 'b> {
-    fmt: &'a mut fmt::Formatter<'b>,
-    frame_index: usize,
-    format: PrintFmt,
-    print_path:
-        &'a mut (dyn FnMut(&mut fmt::Formatter<'_>, BytesOrWideString<'_>) -> fmt::Result + 'b),
-}
-
-/// The styles of printing that we can print
-#[derive(Copy, Clone, Eq, PartialEq)]
-pub enum PrintFmt {
-    /// Prints a terser backtrace which ideally only contains relevant information
-    Short,
-    /// Prints a backtrace that contains all possible information
-    Full,
-    #[doc(hidden)]
-    __Nonexhaustive,
-}
-
-impl<'a, 'b> BacktraceFmt<'a, 'b> {
-    /// Create a new `BacktraceFmt` which will write output to the provided
-    /// `fmt`.
-    ///
-    /// The `format` argument will control the style in which the backtrace is
-    /// printed, and the `print_path` argument will be used to print the
-    /// `BytesOrWideString` instances of filenames. This type itself doesn't do
-    /// any printing of filenames, but this callback is required to do so.
-    pub fn new(
-        fmt: &'a mut fmt::Formatter<'b>,
-        format: PrintFmt,
-        print_path: &'a mut (dyn FnMut(&mut fmt::Formatter<'_>, BytesOrWideString<'_>) -> fmt::Result
-                     + 'b),
-    ) -> Self {
-        BacktraceFmt {
-            fmt,
-            frame_index: 0,
-            format,
-            print_path,
-        }
-    }
-
-    /// Prints a preamble for the backtrace about to be printed.
-    ///
-    /// This is required on some platforms for backtraces to be fully
-    /// symbolicated later, and otherwise this should just be the first method
-    /// you call after creating a `BacktraceFmt`.
-    pub fn add_context(&mut self) -> fmt::Result {
-        #[cfg(target_os = "fuchsia")]
-        fuchsia::print_dso_context(self.fmt)?;
-        Ok(())
-    }
-
-    /// Adds a frame to the backtrace output.
-    ///
-    /// This commit returns an RAII instance of a `BacktraceFrameFmt` which can be used
-    /// to actually print a frame, and on destruction it will increment the
-    /// frame counter.
-    pub fn frame(&mut self) -> BacktraceFrameFmt<'_, 'a, 'b> {
-        BacktraceFrameFmt {
-            fmt: self,
-            symbol_index: 0,
-        }
-    }
-
-    /// Completes the backtrace output.
-    ///
-    /// This is currently a no-op but is added for future compatibility with
-    /// backtrace formats.
-    pub fn finish(&mut self) -> fmt::Result {
-        #[cfg(target_os = "fuchsia")]
-        fuchsia::finish_context(self.fmt)?;
-        Ok(())
-    }
-
-    /// Inserts a message in the backtrace output.
-    ///
-    /// This allows information to be inserted between frames,
-    /// and won't increment the `frame_index` unlike the `frame`
-    /// method.
-    pub fn message(&mut self, msg: &str) -> fmt::Result {
-        self.fmt.write_str(msg)
-    }
-
-    /// Return the inner formatter.
-    ///
-    /// This is used for writing custom information between frames with `write!` and `writeln!`,
-    /// and won't increment the `frame_index` unlike the `frame` method.
-    pub fn formatter(&mut self) -> &mut fmt::Formatter<'b> {
-        self.fmt
-    }
-}
-
-/// A formatter for just one frame of a backtrace.
-///
-/// This type is created by the `BacktraceFmt::frame` function.
-pub struct BacktraceFrameFmt<'fmt, 'a, 'b> {
-    fmt: &'fmt mut BacktraceFmt<'a, 'b>,
-    symbol_index: usize,
-}
-
-impl BacktraceFrameFmt<'_, '_, '_> {
-    /// Prints a `BacktraceFrame` with this frame formatter.
-    ///
-    /// This will recursively print all `BacktraceSymbol` instances within the
-    /// `BacktraceFrame`.
-    ///
-    /// # Required features
-    ///
-    /// This function requires the `std` feature of the `backtrace` crate to be
-    /// enabled, and the `std` feature is enabled by default.
-    #[cfg(feature = "std")]
-    pub fn backtrace_frame(&mut self, frame: &BacktraceFrame) -> fmt::Result {
-        let symbols = frame.symbols();
-        for symbol in symbols {
-            self.backtrace_symbol(frame, symbol)?;
-        }
-        if symbols.is_empty() {
-            self.print_raw(frame.ip(), None, None, None)?;
-        }
-        Ok(())
-    }
-
-    /// Prints a `BacktraceSymbol` within a `BacktraceFrame`.
-    ///
-    /// # Required features
-    ///
-    /// This function requires the `std` feature of the `backtrace` crate to be
-    /// enabled, and the `std` feature is enabled by default.
-    #[cfg(feature = "std")]
-    pub fn backtrace_symbol(
-        &mut self,
-        frame: &BacktraceFrame,
-        symbol: &BacktraceSymbol,
-    ) -> fmt::Result {
-        self.print_raw_with_column(
-            frame.ip(),
-            symbol.name(),
-            // TODO: this isn't great that we don't end up printing anything
-            // with non-utf8 filenames. Thankfully almost everything is utf8 so
-            // this shouldn't be too bad.
-            symbol
-                .filename()
-                .and_then(|p| Some(BytesOrWideString::Bytes(p.to_str()?.as_bytes()))),
-            symbol.lineno(),
-            symbol.colno(),
-        )?;
-        Ok(())
-    }
-
-    /// Prints a raw traced `Frame` and `Symbol`, typically from within the raw
-    /// callbacks of this crate.
-    pub fn symbol(&mut self, frame: &Frame, symbol: &super::Symbol) -> fmt::Result {
-        self.print_raw_with_column(
-            frame.ip(),
-            symbol.name(),
-            symbol.filename_raw(),
-            symbol.lineno(),
-            symbol.colno(),
-        )?;
-        Ok(())
-    }
-
-    /// Adds a raw frame to the backtrace output.
-    ///
-    /// This method, unlike the previous, takes the raw arguments in case
-    /// they're being source from different locations. Note that this may be
-    /// called multiple times for one frame.
-    pub fn print_raw(
-        &mut self,
-        frame_ip: *mut c_void,
-        symbol_name: Option<SymbolName<'_>>,
-        filename: Option<BytesOrWideString<'_>>,
-        lineno: Option<u32>,
-    ) -> fmt::Result {
-        self.print_raw_with_column(frame_ip, symbol_name, filename, lineno, None)
-    }
-
-    /// Adds a raw frame to the backtrace output, including column information.
-    ///
-    /// This method, like the previous, takes the raw arguments in case
-    /// they're being source from different locations. Note that this may be
-    /// called multiple times for one frame.
-    pub fn print_raw_with_column(
-        &mut self,
-        frame_ip: *mut c_void,
-        symbol_name: Option<SymbolName<'_>>,
-        filename: Option<BytesOrWideString<'_>>,
-        lineno: Option<u32>,
-        colno: Option<u32>,
-    ) -> fmt::Result {
-        // Fuchsia is unable to symbolize within a process so it has a special
-        // format which can be used to symbolize later. Print that instead of
-        // printing addresses in our own format here.
-        if cfg!(target_os = "fuchsia") {
-            self.print_raw_fuchsia(frame_ip)?;
-        } else {
-            self.print_raw_generic(frame_ip, symbol_name, filename, lineno, colno)?;
-        }
-        self.symbol_index += 1;
-        Ok(())
-    }
-
-    #[allow(unused_mut)]
-    fn print_raw_generic(
-        &mut self,
-        mut frame_ip: *mut c_void,
-        symbol_name: Option<SymbolName<'_>>,
-        filename: Option<BytesOrWideString<'_>>,
-        lineno: Option<u32>,
-        colno: Option<u32>,
-    ) -> fmt::Result {
-        // No need to print "null" frames, it basically just means that the
-        // system backtrace was a bit eager to trace back super far.
-        if let PrintFmt::Short = self.fmt.format {
-            if frame_ip.is_null() {
-                return Ok(());
-            }
-        }
-
-        // To reduce TCB size in Sgx enclave, we do not want to implement symbol
-        // resolution functionality.  Rather, we can print the offset of the
-        // address here, which could be later mapped to correct function.
-        #[cfg(all(feature = "std", target_env = "sgx", target_vendor = "fortanix"))]
-        {
-            let image_base = std::os::fortanix_sgx::mem::image_base();
-            frame_ip = usize::wrapping_sub(frame_ip as usize, image_base as _) as _;
-        }
-
-        // Print the index of the frame as well as the optional instruction
-        // pointer of the frame. If we're beyond the first symbol of this frame
-        // though we just print appropriate whitespace.
-        if self.symbol_index == 0 {
-            write!(self.fmt.fmt, "{:4}: ", self.fmt.frame_index)?;
-            if let PrintFmt::Full = self.fmt.format {
-                write!(self.fmt.fmt, "{:1$?} - ", frame_ip, HEX_WIDTH)?;
-            }
-        } else {
-            write!(self.fmt.fmt, "      ")?;
-            if let PrintFmt::Full = self.fmt.format {
-                write!(self.fmt.fmt, "{:1$}", "", HEX_WIDTH + 3)?;
-            }
-        }
-
-        // Next up write out the symbol name, using the alternate formatting for
-        // more information if we're a full backtrace. Here we also handle
-        // symbols which don't have a name,
-        match (symbol_name, &self.fmt.format) {
-            (Some(name), PrintFmt::Short) => write!(self.fmt.fmt, "{:#}", name)?,
-            (Some(name), PrintFmt::Full) => write!(self.fmt.fmt, "{}", name)?,
-            (None, _) | (_, PrintFmt::__Nonexhaustive) => write!(self.fmt.fmt, "<unknown>")?,
-        }
-        self.fmt.fmt.write_str("\n")?;
-
-        // And last up, print out the filename/line number if they're available.
-        if let (Some(file), Some(line)) = (filename, lineno) {
-            self.print_fileline(file, line, colno)?;
-        }
-
-        Ok(())
-    }
-
-    fn print_fileline(
-        &mut self,
-        file: BytesOrWideString<'_>,
-        line: u32,
-        colno: Option<u32>,
-    ) -> fmt::Result {
-        // Filename/line are printed on lines under the symbol name, so print
-        // some appropriate whitespace to sort of right-align ourselves.
-        if let PrintFmt::Full = self.fmt.format {
-            write!(self.fmt.fmt, "{:1$}", "", HEX_WIDTH)?;
-        }
-        write!(self.fmt.fmt, "             at ")?;
-
-        // Delegate to our internal callback to print the filename and then
-        // print out the line number.
-        (self.fmt.print_path)(self.fmt.fmt, file)?;
-        write!(self.fmt.fmt, ":{}", line)?;
-
-        // Add column number, if available.
-        if let Some(colno) = colno {
-            write!(self.fmt.fmt, ":{}", colno)?;
-        }
-
-        write!(self.fmt.fmt, "\n")?;
-        Ok(())
-    }
-
-    fn print_raw_fuchsia(&mut self, frame_ip: *mut c_void) -> fmt::Result {
-        // We only care about the first symbol of a frame
-        if self.symbol_index == 0 {
-            self.fmt.fmt.write_str("{{{bt:")?;
-            write!(self.fmt.fmt, "{}:{:?}", self.fmt.frame_index, frame_ip)?;
-            self.fmt.fmt.write_str("}}}\n")?;
-        }
-        Ok(())
-    }
-}
-
-impl Drop for BacktraceFrameFmt<'_, '_, '_> {
-    fn drop(&mut self) {
-        self.fmt.frame_index += 1;
-    }
-}