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#![stable(feature = "metadata_ext", since = "1.1.0")]

use crate::fs::Metadata;
use crate::sys_common::AsInner;

#[allow(deprecated)]
use crate::os::macos::raw;

/// OS-specific extensions to [`fs::Metadata`].
///
/// [`fs::Metadata`]: ../../../../std/fs/struct.Metadata.html
#[stable(feature = "metadata_ext", since = "1.1.0")]
pub trait MetadataExt {
    /// Gain a reference to the underlying `stat` structure which contains
    /// the raw information returned by the OS.
    ///
    /// The contents of the returned `stat` are **not** consistent across
    /// Unix platforms. The `os::unix::fs::MetadataExt` trait contains the
    /// cross-Unix abstractions contained within the raw stat.
    #[stable(feature = "metadata_ext", since = "1.1.0")]
    #[rustc_deprecated(since = "1.8.0",
                       reason = "deprecated in favor of the accessor \
                                 methods of this trait")]
    #[allow(deprecated)]
    fn as_raw_stat(&self) -> &raw::stat;

    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_dev(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_ino(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_mode(&self) -> u32;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_nlink(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_uid(&self) -> u32;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_gid(&self) -> u32;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_rdev(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_size(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_atime(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_atime_nsec(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_mtime(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_mtime_nsec(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_ctime(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_ctime_nsec(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_birthtime(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_birthtime_nsec(&self) -> i64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_blksize(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_blocks(&self) -> u64;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_flags(&self) -> u32;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_gen(&self) -> u32;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_lspare(&self) -> u32;
    #[stable(feature = "metadata_ext2", since = "1.8.0")]
    fn st_qspare(&self) -> [u64; 2];
}

#[stable(feature = "metadata_ext", since = "1.1.0")]
impl MetadataExt for Metadata {
    #[allow(deprecated)]
    fn as_raw_stat(&self) -> &raw::stat {
        unsafe {
            &*(self.as_inner().as_inner() as *const libc::stat
                                          as *const raw::stat)
        }
    }
    fn st_dev(&self) -> u64 {
        self.as_inner().as_inner().st_dev as u64
    }
    fn st_ino(&self) -> u64 {
        self.as_inner().as_inner().st_ino as u64
    }
    fn st_mode(&self) -> u32 {
        self.as_inner().as_inner().st_mode as u32
    }
    fn st_nlink(&self) -> u64 {
        self.as_inner().as_inner().st_nlink as u64
    }
    fn st_uid(&self) -> u32 {
        self.as_inner().as_inner().st_uid as u32
    }
    fn st_gid(&self) -> u32 {
        self.as_inner().as_inner().st_gid as u32
    }
    fn st_rdev(&self) -> u64 {
        self.as_inner().as_inner().st_rdev as u64
    }
    fn st_size(&self) -> u64 {
        self.as_inner().as_inner().st_size as u64
    }
    fn st_atime(&self) -> i64 {
        self.as_inner().as_inner().st_atime as i64
    }
    fn st_atime_nsec(&self) -> i64 {
        self.as_inner().as_inner().st_atime_nsec as i64
    }
    fn st_mtime(&self) -> i64 {
        self.as_inner().as_inner().st_mtime as i64
    }
    fn st_mtime_nsec(&self) -> i64 {
        self.as_inner().as_inner().st_mtime_nsec as i64
    }
    fn st_ctime(&self) -> i64 {
        self.as_inner().as_inner().st_ctime as i64
    }
    fn st_ctime_nsec(&self) -> i64 {
        self.as_inner().as_inner().st_ctime_nsec as i64
    }
    fn st_birthtime(&self) -> i64 {
        self.as_inner().as_inner().st_birthtime as i64
    }
    fn st_birthtime_nsec(&self) -> i64 {
        self.as_inner().as_inner().st_birthtime_nsec as i64
    }
    fn st_blksize(&self) -> u64 {
        self.as_inner().as_inner().st_blksize as u64
    }
    fn st_blocks(&self) -> u64 {
        self.as_inner().as_inner().st_blocks as u64
    }
    fn st_gen(&self) -> u32 {
        self.as_inner().as_inner().st_gen as u32
    }
    fn st_flags(&self) -> u32 {
        self.as_inner().as_inner().st_flags as u32
    }
    fn st_lspare(&self) -> u32 {
        self.as_inner().as_inner().st_lspare as u32
    }
    fn st_qspare(&self) -> [u64; 2] {
        let qspare = self.as_inner().as_inner().st_qspare;
        [qspare[0] as u64, qspare[1] as u64]
    }
}