vortex_flatbuffers/generated/
layout.rs

// automatically generated by the FlatBuffers compiler, do not modify


// @generated

use core::mem;
use core::cmp::Ordering;

extern crate flatbuffers;
use self::flatbuffers::{EndianScalar, Follow};

pub enum LayoutOffset {}
#[derive(Copy, Clone, PartialEq)]

/// A `Layout` is a recursive data structure describing the physical layout of Vortex arrays in random access storage.
/// As a starting, concrete example, the first three Layout encodings are defined as:
///
/// 1. encoding == 1, `Flat` -> one buffer, zero child Layouts
/// 2. encoding == 2, `Chunked` -> zero buffers, one or more child Layouts (used for chunks of rows)
/// 3. encoding == 3, `Columnar` -> zero buffers, one or more child Layouts (used for columns of structs)
///
/// The `row_count` represents the number of rows represented by this Layout. This is very useful for
/// pruning the Layout tree based on row filters.
///
/// The `metadata` field is fully opaque at this layer, and allows the Layout implementation corresponding to
/// `encoding` to embed additional information that may be useful for the reader. For example, the `ChunkedLayout`
/// uses the first byte of the `metadata` array as a boolean to indicate whether the first child Layout represents
/// the statistics table for the other chunks. 
pub struct Layout<'a> {
  pub _tab: flatbuffers::Table<'a>,
}

impl<'a> flatbuffers::Follow<'a> for Layout<'a> {
  type Inner = Layout<'a>;
  #[inline]
  unsafe fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
    Self { _tab: flatbuffers::Table::new(buf, loc) }
  }
}

impl<'a> Layout<'a> {
  pub const VT_ENCODING: flatbuffers::VOffsetT = 4;
  pub const VT_ROW_COUNT: flatbuffers::VOffsetT = 6;
  pub const VT_METADATA: flatbuffers::VOffsetT = 8;
  pub const VT_CHILDREN: flatbuffers::VOffsetT = 10;
  pub const VT_SEGMENTS: flatbuffers::VOffsetT = 12;

  #[inline]
  pub unsafe fn init_from_table(table: flatbuffers::Table<'a>) -> Self {
    Layout { _tab: table }
  }
  #[allow(unused_mut)]
  pub fn create<'bldr: 'args, 'args: 'mut_bldr, 'mut_bldr, A: flatbuffers::Allocator + 'bldr>(
    _fbb: &'mut_bldr mut flatbuffers::FlatBufferBuilder<'bldr, A>,
    args: &'args LayoutArgs<'args>
  ) -> flatbuffers::WIPOffset<Layout<'bldr>> {
    let mut builder = LayoutBuilder::new(_fbb);
    builder.add_row_count(args.row_count);
    if let Some(x) = args.segments { builder.add_segments(x); }
    if let Some(x) = args.children { builder.add_children(x); }
    if let Some(x) = args.metadata { builder.add_metadata(x); }
    builder.add_encoding(args.encoding);
    builder.finish()
  }


  /// The ID of the encoding used for this Layout.
  #[inline]
  pub fn encoding(&self) -> u16 {
    // Safety:
    // Created from valid Table for this object
    // which contains a valid value in this slot
    unsafe { self._tab.get::<u16>(Layout::VT_ENCODING, Some(0)).unwrap()}
  }
  /// The number of rows of data represented by this Layout.
  #[inline]
  pub fn row_count(&self) -> u64 {
    // Safety:
    // Created from valid Table for this object
    // which contains a valid value in this slot
    unsafe { self._tab.get::<u64>(Layout::VT_ROW_COUNT, Some(0)).unwrap()}
  }
  /// Any additional metadata this layout needs to interpret its children.
  /// This does not include data-specific metadata, which the layout should store in a segment.
  #[inline]
  pub fn metadata(&self) -> Option<flatbuffers::Vector<'a, u8>> {
    // Safety:
    // Created from valid Table for this object
    // which contains a valid value in this slot
    unsafe { self._tab.get::<flatbuffers::ForwardsUOffset<flatbuffers::Vector<'a, u8>>>(Layout::VT_METADATA, None)}
  }
  /// The children of this Layout.
  #[inline]
  pub fn children(&self) -> Option<flatbuffers::Vector<'a, flatbuffers::ForwardsUOffset<Layout<'a>>>> {
    // Safety:
    // Created from valid Table for this object
    // which contains a valid value in this slot
    unsafe { self._tab.get::<flatbuffers::ForwardsUOffset<flatbuffers::Vector<'a, flatbuffers::ForwardsUOffset<Layout>>>>(Layout::VT_CHILDREN, None)}
  }
  /// Identifiers for each `Segment` of data required by this layout.
  #[inline]
  pub fn segments(&self) -> Option<flatbuffers::Vector<'a, u32>> {
    // Safety:
    // Created from valid Table for this object
    // which contains a valid value in this slot
    unsafe { self._tab.get::<flatbuffers::ForwardsUOffset<flatbuffers::Vector<'a, u32>>>(Layout::VT_SEGMENTS, None)}
  }
}

impl flatbuffers::Verifiable for Layout<'_> {
  #[inline]
  fn run_verifier(
    v: &mut flatbuffers::Verifier, pos: usize
  ) -> Result<(), flatbuffers::InvalidFlatbuffer> {
    use self::flatbuffers::Verifiable;
    v.visit_table(pos)?
     .visit_field::<u16>("encoding", Self::VT_ENCODING, false)?
     .visit_field::<u64>("row_count", Self::VT_ROW_COUNT, false)?
     .visit_field::<flatbuffers::ForwardsUOffset<flatbuffers::Vector<'_, u8>>>("metadata", Self::VT_METADATA, false)?
     .visit_field::<flatbuffers::ForwardsUOffset<flatbuffers::Vector<'_, flatbuffers::ForwardsUOffset<Layout>>>>("children", Self::VT_CHILDREN, false)?
     .visit_field::<flatbuffers::ForwardsUOffset<flatbuffers::Vector<'_, u32>>>("segments", Self::VT_SEGMENTS, false)?
     .finish();
    Ok(())
  }
}
pub struct LayoutArgs<'a> {
    pub encoding: u16,
    pub row_count: u64,
    pub metadata: Option<flatbuffers::WIPOffset<flatbuffers::Vector<'a, u8>>>,
    pub children: Option<flatbuffers::WIPOffset<flatbuffers::Vector<'a, flatbuffers::ForwardsUOffset<Layout<'a>>>>>,
    pub segments: Option<flatbuffers::WIPOffset<flatbuffers::Vector<'a, u32>>>,
}
impl<'a> Default for LayoutArgs<'a> {
  #[inline]
  fn default() -> Self {
    LayoutArgs {
      encoding: 0,
      row_count: 0,
      metadata: None,
      children: None,
      segments: None,
    }
  }
}

pub struct LayoutBuilder<'a: 'b, 'b, A: flatbuffers::Allocator + 'a> {
  fbb_: &'b mut flatbuffers::FlatBufferBuilder<'a, A>,
  start_: flatbuffers::WIPOffset<flatbuffers::TableUnfinishedWIPOffset>,
}
impl<'a: 'b, 'b, A: flatbuffers::Allocator + 'a> LayoutBuilder<'a, 'b, A> {
  #[inline]
  pub fn add_encoding(&mut self, encoding: u16) {
    self.fbb_.push_slot::<u16>(Layout::VT_ENCODING, encoding, 0);
  }
  #[inline]
  pub fn add_row_count(&mut self, row_count: u64) {
    self.fbb_.push_slot::<u64>(Layout::VT_ROW_COUNT, row_count, 0);
  }
  #[inline]
  pub fn add_metadata(&mut self, metadata: flatbuffers::WIPOffset<flatbuffers::Vector<'b , u8>>) {
    self.fbb_.push_slot_always::<flatbuffers::WIPOffset<_>>(Layout::VT_METADATA, metadata);
  }
  #[inline]
  pub fn add_children(&mut self, children: flatbuffers::WIPOffset<flatbuffers::Vector<'b , flatbuffers::ForwardsUOffset<Layout<'b >>>>) {
    self.fbb_.push_slot_always::<flatbuffers::WIPOffset<_>>(Layout::VT_CHILDREN, children);
  }
  #[inline]
  pub fn add_segments(&mut self, segments: flatbuffers::WIPOffset<flatbuffers::Vector<'b , u32>>) {
    self.fbb_.push_slot_always::<flatbuffers::WIPOffset<_>>(Layout::VT_SEGMENTS, segments);
  }
  #[inline]
  pub fn new(_fbb: &'b mut flatbuffers::FlatBufferBuilder<'a, A>) -> LayoutBuilder<'a, 'b, A> {
    let start = _fbb.start_table();
    LayoutBuilder {
      fbb_: _fbb,
      start_: start,
    }
  }
  #[inline]
  pub fn finish(self) -> flatbuffers::WIPOffset<Layout<'a>> {
    let o = self.fbb_.end_table(self.start_);
    flatbuffers::WIPOffset::new(o.value())
  }
}

impl core::fmt::Debug for Layout<'_> {
  fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
    let mut ds = f.debug_struct("Layout");
      ds.field("encoding", &self.encoding());
      ds.field("row_count", &self.row_count());
      ds.field("metadata", &self.metadata());
      ds.field("children", &self.children());
      ds.field("segments", &self.segments());
      ds.finish()
  }
}
#[inline]
/// Verifies that a buffer of bytes contains a `Layout`
/// and returns it.
/// Note that verification is still experimental and may not
/// catch every error, or be maximally performant. For the
/// previous, unchecked, behavior use
/// `root_as_layout_unchecked`.
pub fn root_as_layout(buf: &[u8]) -> Result<Layout, flatbuffers::InvalidFlatbuffer> {
  flatbuffers::root::<Layout>(buf)
}
#[inline]
/// Verifies that a buffer of bytes contains a size prefixed
/// `Layout` and returns it.
/// Note that verification is still experimental and may not
/// catch every error, or be maximally performant. For the
/// previous, unchecked, behavior use
/// `size_prefixed_root_as_layout_unchecked`.
pub fn size_prefixed_root_as_layout(buf: &[u8]) -> Result<Layout, flatbuffers::InvalidFlatbuffer> {
  flatbuffers::size_prefixed_root::<Layout>(buf)
}
#[inline]
/// Verifies, with the given options, that a buffer of bytes
/// contains a `Layout` and returns it.
/// Note that verification is still experimental and may not
/// catch every error, or be maximally performant. For the
/// previous, unchecked, behavior use
/// `root_as_layout_unchecked`.
pub fn root_as_layout_with_opts<'b, 'o>(
  opts: &'o flatbuffers::VerifierOptions,
  buf: &'b [u8],
) -> Result<Layout<'b>, flatbuffers::InvalidFlatbuffer> {
  flatbuffers::root_with_opts::<Layout<'b>>(opts, buf)
}
#[inline]
/// Verifies, with the given verifier options, that a buffer of
/// bytes contains a size prefixed `Layout` and returns
/// it. Note that verification is still experimental and may not
/// catch every error, or be maximally performant. For the
/// previous, unchecked, behavior use
/// `root_as_layout_unchecked`.
pub fn size_prefixed_root_as_layout_with_opts<'b, 'o>(
  opts: &'o flatbuffers::VerifierOptions,
  buf: &'b [u8],
) -> Result<Layout<'b>, flatbuffers::InvalidFlatbuffer> {
  flatbuffers::size_prefixed_root_with_opts::<Layout<'b>>(opts, buf)
}
#[inline]
/// Assumes, without verification, that a buffer of bytes contains a Layout and returns it.
/// # Safety
/// Callers must trust the given bytes do indeed contain a valid `Layout`.
pub unsafe fn root_as_layout_unchecked(buf: &[u8]) -> Layout {
  flatbuffers::root_unchecked::<Layout>(buf)
}
#[inline]
/// Assumes, without verification, that a buffer of bytes contains a size prefixed Layout and returns it.
/// # Safety
/// Callers must trust the given bytes do indeed contain a valid size prefixed `Layout`.
pub unsafe fn size_prefixed_root_as_layout_unchecked(buf: &[u8]) -> Layout {
  flatbuffers::size_prefixed_root_unchecked::<Layout>(buf)
}
#[inline]
pub fn finish_layout_buffer<'a, 'b, A: flatbuffers::Allocator + 'a>(
    fbb: &'b mut flatbuffers::FlatBufferBuilder<'a, A>,
    root: flatbuffers::WIPOffset<Layout<'a>>) {
  fbb.finish(root, None);
}

#[inline]
pub fn finish_size_prefixed_layout_buffer<'a, 'b, A: flatbuffers::Allocator + 'a>(fbb: &'b mut flatbuffers::FlatBufferBuilder<'a, A>, root: flatbuffers::WIPOffset<Layout<'a>>) {
  fbb.finish_size_prefixed(root, None);
}
vortex_flatbuffers/generated/layout.rs

vortex_flatbuffers/generated/
layout.rs
