| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/git/checkouts/tantivy-65d0bbbddbbd5d02/433372d/fastfield_codecs/src/compact_space/mod.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>mod.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../fastfield_codecs/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../fastfield_codecs/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="821">821</span> |
| </pre><pre class="rust"><code><span class="doccomment">/// This codec takes a large number space (u128) and reduces it to a compact number space. |
| /// |
| /// It will find spaces in the number range. For example: |
| /// |
| /// 100, 101, 102, 103, 104, 50000, 50001 |
| /// could be mapped to |
| /// 100..104 -> 0..4 |
| /// 50000..50001 -> 5..6 |
| /// |
| /// Compact space 0..=6 requires much less bits than 100..=50001 |
| /// |
| /// The codec is created to compress ip addresses, but may be employed in other use cases. |
| </span><span class="kw">use </span>std::{ |
| cmp::Ordering, |
| collections::BTreeSet, |
| io::{<span class="self">self</span>, Write}, |
| ops::{Range, RangeInclusive}, |
| }; |
| |
| <span class="kw">use </span>common::{BinarySerializable, CountingWriter, VInt, VIntU128}; |
| <span class="kw">use </span>ownedbytes::OwnedBytes; |
| <span class="kw">use </span>tantivy_bitpacker::{<span class="self">self</span>, BitPacker, BitUnpacker}; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::compact_space::build_compact_space::get_compact_space; |
| <span class="kw">use </span><span class="kw">crate</span>::Column; |
| |
| <span class="kw">mod </span>blank_range; |
| <span class="kw">mod </span>build_compact_space; |
| |
| <span class="doccomment">/// The cost per blank is quite hard actually, since blanks are delta encoded, the actual cost of |
| /// blanks depends on the number of blanks. |
| /// |
| /// The number is taken by looking at a real dataset. It is optimized for larger datasets. |
| </span><span class="kw">const </span>COST_PER_BLANK_IN_BITS: usize = <span class="number">36</span>; |
| |
| <span class="attribute">#[derive(Debug, Clone, Eq, PartialEq)] |
| </span><span class="kw">pub struct </span>CompactSpace { |
| ranges_mapping: Vec<RangeMapping>, |
| } |
| |
| <span class="doccomment">/// Maps the range from the original space to compact_start + range.len() |
| </span><span class="attribute">#[derive(Debug, Clone, Eq, PartialEq)] |
| </span><span class="kw">struct </span>RangeMapping { |
| value_range: RangeInclusive<u128>, |
| compact_start: u64, |
| } |
| <span class="kw">impl </span>RangeMapping { |
| <span class="kw">fn </span>range_length(<span class="kw-2">&</span><span class="self">self</span>) -> u64 { |
| (<span class="self">self</span>.value_range.end() - <span class="self">self</span>.value_range.start()) <span class="kw">as </span>u64 + <span class="number">1 |
| </span>} |
| |
| <span class="comment">// The last value of the compact space in this range |
| </span><span class="kw">fn </span>compact_end(<span class="kw-2">&</span><span class="self">self</span>) -> u64 { |
| <span class="self">self</span>.compact_start + <span class="self">self</span>.range_length() - <span class="number">1 |
| </span>} |
| } |
| |
| <span class="kw">impl </span>BinarySerializable <span class="kw">for </span>CompactSpace { |
| <span class="kw">fn </span>serialize<W: io::Write>(<span class="kw-2">&</span><span class="self">self</span>, writer: <span class="kw-2">&mut </span>W) -> io::Result<()> { |
| VInt(<span class="self">self</span>.ranges_mapping.len() <span class="kw">as </span>u64).serialize(writer)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>prev_value = <span class="number">0</span>; |
| <span class="kw">for </span>value_range <span class="kw">in </span><span class="self">self |
| </span>.ranges_mapping |
| .iter() |
| .map(|range_mapping| <span class="kw-2">&</span>range_mapping.value_range) |
| { |
| <span class="kw">let </span>blank_delta_start = value_range.start() - prev_value; |
| VIntU128(blank_delta_start).serialize(writer)<span class="question-mark">?</span>; |
| prev_value = <span class="kw-2">*</span>value_range.start(); |
| |
| <span class="kw">let </span>blank_delta_end = value_range.end() - prev_value; |
| VIntU128(blank_delta_end).serialize(writer)<span class="question-mark">?</span>; |
| prev_value = <span class="kw-2">*</span>value_range.end(); |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>deserialize<R: io::Read>(reader: <span class="kw-2">&mut </span>R) -> io::Result<<span class="self">Self</span>> { |
| <span class="kw">let </span>num_ranges = VInt::deserialize(reader)<span class="question-mark">?</span>.<span class="number">0</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>ranges_mapping: Vec<RangeMapping> = <span class="macro">vec!</span>[]; |
| <span class="kw">let </span><span class="kw-2">mut </span>value = <span class="number">0u128</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>compact_start = <span class="number">1u64</span>; <span class="comment">// 0 is reserved for `null` |
| </span><span class="kw">for _ in </span><span class="number">0</span>..num_ranges { |
| <span class="kw">let </span>blank_delta_start = VIntU128::deserialize(reader)<span class="question-mark">?</span>.<span class="number">0</span>; |
| value += blank_delta_start; |
| <span class="kw">let </span>blank_start = value; |
| |
| <span class="kw">let </span>blank_delta_end = VIntU128::deserialize(reader)<span class="question-mark">?</span>.<span class="number">0</span>; |
| value += blank_delta_end; |
| <span class="kw">let </span>blank_end = value; |
| |
| <span class="kw">let </span>range_mapping = RangeMapping { |
| value_range: blank_start..=blank_end, |
| compact_start, |
| }; |
| <span class="kw">let </span>range_length = range_mapping.range_length(); |
| ranges_mapping.push(range_mapping); |
| compact_start += range_length <span class="kw">as </span>u64; |
| } |
| |
| <span class="prelude-val">Ok</span>(<span class="self">Self </span>{ ranges_mapping }) |
| } |
| } |
| |
| <span class="kw">impl </span>CompactSpace { |
| <span class="doccomment">/// Amplitude is the value range of the compact space including the sentinel value used to |
| /// identify null values. The compact space is 0..=amplitude . |
| /// |
| /// It's only used to verify we don't exceed u64 number space, which would indicate a bug. |
| </span><span class="kw">fn </span>amplitude_compact_space(<span class="kw-2">&</span><span class="self">self</span>) -> u128 { |
| <span class="self">self</span>.ranges_mapping |
| .last() |
| .map(|last_range| last_range.compact_end() <span class="kw">as </span>u128) |
| .unwrap_or(<span class="number">1</span>) <span class="comment">// compact space starts at 1, 0 == null |
| </span>} |
| |
| <span class="kw">fn </span>get_range_mapping(<span class="kw-2">&</span><span class="self">self</span>, pos: usize) -> <span class="kw-2">&</span>RangeMapping { |
| <span class="kw-2">&</span><span class="self">self</span>.ranges_mapping[pos] |
| } |
| |
| <span class="doccomment">/// Returns either Ok(the value in the compact space) or if it is outside the compact space the |
| /// Err(position where it would be inserted) |
| </span><span class="kw">fn </span>u128_to_compact(<span class="kw-2">&</span><span class="self">self</span>, value: u128) -> <span class="prelude-ty">Result</span><u64, usize> { |
| <span class="self">self</span>.ranges_mapping |
| .binary_search_by(|probe| { |
| <span class="kw">let </span>value_range = <span class="kw-2">&</span>probe.value_range; |
| <span class="kw">if </span>value < <span class="kw-2">*</span>value_range.start() { |
| Ordering::Greater |
| } <span class="kw">else if </span>value > <span class="kw-2">*</span>value_range.end() { |
| Ordering::Less |
| } <span class="kw">else </span>{ |
| Ordering::Equal |
| } |
| }) |
| .map(|pos| { |
| <span class="kw">let </span>range_mapping = <span class="kw-2">&</span><span class="self">self</span>.ranges_mapping[pos]; |
| <span class="kw">let </span>pos_in_range = (value - range_mapping.value_range.start()) <span class="kw">as </span>u64; |
| range_mapping.compact_start + pos_in_range |
| }) |
| } |
| |
| <span class="doccomment">/// Unpacks a value from compact space u64 to u128 space |
| </span><span class="kw">fn </span>compact_to_u128(<span class="kw-2">&</span><span class="self">self</span>, compact: u64) -> u128 { |
| <span class="kw">let </span>pos = <span class="self">self |
| </span>.ranges_mapping |
| .binary_search_by_key(<span class="kw-2">&</span>compact, |range_mapping| range_mapping.compact_start) |
| <span class="comment">// Correctness: Overflow. The first range starts at compact space 0, the error from |
| // binary search can never be 0 |
| </span>.map_or_else(|e| e - <span class="number">1</span>, |v| v); |
| |
| <span class="kw">let </span>range_mapping = <span class="kw-2">&</span><span class="self">self</span>.ranges_mapping[pos]; |
| <span class="kw">let </span>diff = compact - range_mapping.compact_start; |
| range_mapping.value_range.start() + diff <span class="kw">as </span>u128 |
| } |
| } |
| |
| <span class="kw">pub struct </span>CompactSpaceCompressor { |
| params: IPCodecParams, |
| } |
| <span class="attribute">#[derive(Debug, Clone)] |
| </span><span class="kw">pub struct </span>IPCodecParams { |
| compact_space: CompactSpace, |
| bit_unpacker: BitUnpacker, |
| min_value: u128, |
| max_value: u128, |
| num_vals: u32, |
| num_bits: u8, |
| } |
| |
| <span class="kw">impl </span>CompactSpaceCompressor { |
| <span class="doccomment">/// Taking the vals as Vec may cost a lot of memory. It is used to sort the vals. |
| </span><span class="kw">pub fn </span>train_from(iter: <span class="kw">impl </span>Iterator<Item = u128>, num_vals: u32) -> <span class="self">Self </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>values_sorted = BTreeSet::new(); |
| values_sorted.extend(iter); |
| <span class="kw">let </span>total_num_values = num_vals; |
| |
| <span class="kw">let </span>compact_space = |
| get_compact_space(<span class="kw-2">&</span>values_sorted, total_num_values, COST_PER_BLANK_IN_BITS); |
| <span class="kw">let </span>amplitude_compact_space = compact_space.amplitude_compact_space(); |
| |
| <span class="macro">assert!</span>( |
| amplitude_compact_space <= u64::MAX <span class="kw">as </span>u128, |
| <span class="string">"case unsupported." |
| </span>); |
| |
| <span class="kw">let </span>num_bits = tantivy_bitpacker::compute_num_bits(amplitude_compact_space <span class="kw">as </span>u64); |
| <span class="kw">let </span>min_value = <span class="kw-2">*</span>values_sorted.iter().next().unwrap_or(<span class="kw-2">&</span><span class="number">0</span>); |
| <span class="kw">let </span>max_value = <span class="kw-2">*</span>values_sorted.iter().last().unwrap_or(<span class="kw-2">&</span><span class="number">0</span>); |
| <span class="macro">assert_eq!</span>( |
| compact_space |
| .u128_to_compact(max_value) |
| .expect(<span class="string">"could not convert max value to compact space"</span>), |
| amplitude_compact_space <span class="kw">as </span>u64 |
| ); |
| CompactSpaceCompressor { |
| params: IPCodecParams { |
| compact_space, |
| bit_unpacker: BitUnpacker::new(num_bits), |
| min_value, |
| max_value, |
| num_vals: total_num_values, |
| num_bits, |
| }, |
| } |
| } |
| |
| <span class="kw">fn </span>write_footer(<span class="self">self</span>, writer: <span class="kw-2">&mut </span><span class="kw">impl </span>Write) -> io::Result<()> { |
| <span class="kw">let </span>writer = <span class="kw-2">&mut </span>CountingWriter::wrap(writer); |
| <span class="self">self</span>.params.serialize(writer)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>footer_len = writer.written_bytes() <span class="kw">as </span>u32; |
| footer_len.serialize(writer)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">pub fn </span>compress_into( |
| <span class="self">self</span>, |
| vals: <span class="kw">impl </span>Iterator<Item = u128>, |
| write: <span class="kw-2">&mut </span><span class="kw">impl </span>Write, |
| ) -> io::Result<()> { |
| <span class="kw">let </span><span class="kw-2">mut </span>bitpacker = BitPacker::default(); |
| <span class="kw">for </span>val <span class="kw">in </span>vals { |
| <span class="kw">let </span>compact = <span class="self">self |
| </span>.params |
| .compact_space |
| .u128_to_compact(val) |
| .map_err(|<span class="kw">_</span>| { |
| io::Error::new( |
| io::ErrorKind::InvalidData, |
| <span class="string">"Could not convert value to compact_space. This is a bug."</span>, |
| ) |
| })<span class="question-mark">?</span>; |
| bitpacker.write(compact, <span class="self">self</span>.params.num_bits, write)<span class="question-mark">?</span>; |
| } |
| bitpacker.close(write)<span class="question-mark">?</span>; |
| <span class="self">self</span>.write_footer(write)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="attribute">#[derive(Debug, Clone)] |
| </span><span class="kw">pub struct </span>CompactSpaceDecompressor { |
| data: OwnedBytes, |
| params: IPCodecParams, |
| } |
| |
| <span class="kw">impl </span>BinarySerializable <span class="kw">for </span>IPCodecParams { |
| <span class="kw">fn </span>serialize<W: io::Write>(<span class="kw-2">&</span><span class="self">self</span>, writer: <span class="kw-2">&mut </span>W) -> io::Result<()> { |
| <span class="comment">// header flags for future optional dictionary encoding |
| </span><span class="kw">let </span>footer_flags = <span class="number">0u64</span>; |
| footer_flags.serialize(writer)<span class="question-mark">?</span>; |
| |
| VIntU128(<span class="self">self</span>.min_value).serialize(writer)<span class="question-mark">?</span>; |
| VIntU128(<span class="self">self</span>.max_value).serialize(writer)<span class="question-mark">?</span>; |
| VIntU128(<span class="self">self</span>.num_vals <span class="kw">as </span>u128).serialize(writer)<span class="question-mark">?</span>; |
| <span class="self">self</span>.num_bits.serialize(writer)<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.compact_space.serialize(writer)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>deserialize<R: io::Read>(reader: <span class="kw-2">&mut </span>R) -> io::Result<<span class="self">Self</span>> { |
| <span class="kw">let </span>_header_flags = u64::deserialize(reader)<span class="question-mark">?</span>; |
| <span class="kw">let </span>min_value = VIntU128::deserialize(reader)<span class="question-mark">?</span>.<span class="number">0</span>; |
| <span class="kw">let </span>max_value = VIntU128::deserialize(reader)<span class="question-mark">?</span>.<span class="number">0</span>; |
| <span class="kw">let </span>num_vals = VIntU128::deserialize(reader)<span class="question-mark">?</span>.<span class="number">0 </span><span class="kw">as </span>u32; |
| <span class="kw">let </span>num_bits = u8::deserialize(reader)<span class="question-mark">?</span>; |
| <span class="kw">let </span>compact_space = CompactSpace::deserialize(reader)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(<span class="self">Self </span>{ |
| compact_space, |
| bit_unpacker: BitUnpacker::new(num_bits), |
| min_value, |
| max_value, |
| num_vals, |
| num_bits, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>Column<u128> <span class="kw">for </span>CompactSpaceDecompressor { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>get_val(<span class="kw-2">&</span><span class="self">self</span>, doc: u32) -> u128 { |
| <span class="self">self</span>.get(doc) |
| } |
| |
| <span class="kw">fn </span>min_value(<span class="kw-2">&</span><span class="self">self</span>) -> u128 { |
| <span class="self">self</span>.min_value() |
| } |
| |
| <span class="kw">fn </span>max_value(<span class="kw-2">&</span><span class="self">self</span>) -> u128 { |
| <span class="self">self</span>.max_value() |
| } |
| |
| <span class="kw">fn </span>num_vals(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.params.num_vals |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> Box<<span class="kw">dyn </span>Iterator<Item = u128> + <span class="lifetime">'_</span>> { |
| Box::new(<span class="self">self</span>.iter()) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>get_docids_for_value_range( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| value_range: RangeInclusive<u128>, |
| positions_range: Range<u32>, |
| positions: <span class="kw-2">&mut </span>Vec<u32>, |
| ) { |
| <span class="self">self</span>.get_positions_for_value_range(value_range, positions_range, positions) |
| } |
| } |
| |
| <span class="kw">impl </span>CompactSpaceDecompressor { |
| <span class="kw">pub fn </span>open(data: OwnedBytes) -> io::Result<CompactSpaceDecompressor> { |
| <span class="kw">let </span>(data_slice, footer_len_bytes) = data.split_at(data.len() - <span class="number">4</span>); |
| <span class="kw">let </span>footer_len = u32::deserialize(<span class="kw-2">&mut &</span>footer_len_bytes[..])<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>data_footer = <span class="kw-2">&</span>data_slice[data_slice.len() - footer_len <span class="kw">as </span>usize..]; |
| <span class="kw">let </span>params = IPCodecParams::deserialize(<span class="kw-2">&mut &</span>data_footer[..])<span class="question-mark">?</span>; |
| <span class="kw">let </span>decompressor = CompactSpaceDecompressor { data, params }; |
| |
| <span class="prelude-val">Ok</span>(decompressor) |
| } |
| |
| <span class="doccomment">/// Converting to compact space for the decompressor is more complex, since we may get values |
| /// which are outside the compact space. e.g. if we map |
| /// 1000 => 5 |
| /// 2000 => 6 |
| /// |
| /// and we want a mapping for 1005, there is no equivalent compact space. We instead return an |
| /// error with the index of the next range. |
| </span><span class="kw">fn </span>u128_to_compact(<span class="kw-2">&</span><span class="self">self</span>, value: u128) -> <span class="prelude-ty">Result</span><u64, usize> { |
| <span class="self">self</span>.params.compact_space.u128_to_compact(value) |
| } |
| |
| <span class="kw">fn </span>compact_to_u128(<span class="kw-2">&</span><span class="self">self</span>, compact: u64) -> u128 { |
| <span class="self">self</span>.params.compact_space.compact_to_u128(compact) |
| } |
| |
| <span class="doccomment">/// Comparing on compact space: Random dataset 0,24 (50% random hit) - 1.05 GElements/s |
| /// Comparing on compact space: Real dataset 1.08 GElements/s |
| /// |
| /// Comparing on original space: Real dataset .06 GElements/s (not completely optimized) |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_positions_for_value_range( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| value_range: RangeInclusive<u128>, |
| position_range: Range<u32>, |
| positions: <span class="kw-2">&mut </span>Vec<u32>, |
| ) { |
| <span class="kw">if </span>value_range.start() > value_range.end() { |
| <span class="kw">return</span>; |
| } |
| <span class="kw">let </span>position_range = position_range.start..position_range.end.min(<span class="self">self</span>.num_vals()); |
| <span class="kw">let </span>from_value = <span class="kw-2">*</span>value_range.start(); |
| <span class="kw">let </span>to_value = <span class="kw-2">*</span>value_range.end(); |
| <span class="macro">assert!</span>(to_value >= from_value); |
| <span class="kw">let </span>compact_from = <span class="self">self</span>.u128_to_compact(from_value); |
| <span class="kw">let </span>compact_to = <span class="self">self</span>.u128_to_compact(to_value); |
| |
| <span class="comment">// Quick return, if both ranges fall into the same non-mapped space, the range can't cover |
| // any values, so we can early exit |
| </span><span class="kw">match </span>(compact_to, compact_from) { |
| (<span class="prelude-val">Err</span>(pos1), <span class="prelude-val">Err</span>(pos2)) <span class="kw">if </span>pos1 == pos2 => <span class="kw">return</span>, |
| <span class="kw">_ </span>=> {} |
| } |
| |
| <span class="kw">let </span>compact_from = compact_from.unwrap_or_else(|pos| { |
| <span class="comment">// Correctness: Out of bounds, if this value is Err(last_index + 1), we early exit, |
| // since the to_value also mapps into the same non-mapped space |
| </span><span class="kw">let </span>range_mapping = <span class="self">self</span>.params.compact_space.get_range_mapping(pos); |
| range_mapping.compact_start |
| }); |
| <span class="comment">// If there is no compact space, we go to the closest upperbound compact space |
| </span><span class="kw">let </span>compact_to = compact_to.unwrap_or_else(|pos| { |
| <span class="comment">// Correctness: Overflow, if this value is Err(0), we early exit, |
| // since the from_value also mapps into the same non-mapped space |
| |
| // Get end of previous range |
| </span><span class="kw">let </span>pos = pos - <span class="number">1</span>; |
| <span class="kw">let </span>range_mapping = <span class="self">self</span>.params.compact_space.get_range_mapping(pos); |
| range_mapping.compact_end() |
| }); |
| |
| <span class="kw">let </span>range = compact_from..=compact_to; |
| |
| <span class="kw">let </span>scan_num_docs = position_range.end - position_range.start; |
| |
| <span class="kw">let </span>step_size = <span class="number">4</span>; |
| <span class="kw">let </span>cutoff = position_range.start + scan_num_docs - scan_num_docs % step_size; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>push_if_in_range = |idx, val| { |
| <span class="kw">if </span>range.contains(<span class="kw-2">&</span>val) { |
| positions.push(idx); |
| } |
| }; |
| <span class="kw">let </span>get_val = |idx| <span class="self">self</span>.params.bit_unpacker.get(idx, <span class="kw-2">&</span><span class="self">self</span>.data); |
| <span class="comment">// unrolled loop |
| </span><span class="kw">for </span>idx <span class="kw">in </span>(position_range.start..cutoff).step_by(step_size <span class="kw">as </span>usize) { |
| <span class="kw">let </span>idx1 = idx; |
| <span class="kw">let </span>idx2 = idx + <span class="number">1</span>; |
| <span class="kw">let </span>idx3 = idx + <span class="number">2</span>; |
| <span class="kw">let </span>idx4 = idx + <span class="number">3</span>; |
| <span class="kw">let </span>val1 = get_val(idx1 <span class="kw">as </span>u32); |
| <span class="kw">let </span>val2 = get_val(idx2 <span class="kw">as </span>u32); |
| <span class="kw">let </span>val3 = get_val(idx3 <span class="kw">as </span>u32); |
| <span class="kw">let </span>val4 = get_val(idx4 <span class="kw">as </span>u32); |
| push_if_in_range(idx1, val1); |
| push_if_in_range(idx2, val2); |
| push_if_in_range(idx3, val3); |
| push_if_in_range(idx4, val4); |
| } |
| |
| <span class="comment">// handle rest |
| </span><span class="kw">for </span>idx <span class="kw">in </span>cutoff..position_range.end { |
| push_if_in_range(idx, get_val(idx <span class="kw">as </span>u32)); |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>iter_compact(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = u64> + <span class="lifetime">'_ </span>{ |
| (<span class="number">0</span>..<span class="self">self</span>.params.num_vals) |
| .map(<span class="kw">move </span>|idx| <span class="self">self</span>.params.bit_unpacker.get(idx, <span class="kw-2">&</span><span class="self">self</span>.data) <span class="kw">as </span>u64) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = u128> + <span class="lifetime">'_ </span>{ |
| <span class="comment">// TODO: Performance. It would be better to iterate on the ranges and check existence via |
| // the bit_unpacker. |
| </span><span class="self">self</span>.iter_compact() |
| .map(|compact| <span class="self">self</span>.compact_to_u128(compact)) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, idx: u32) -> u128 { |
| <span class="kw">let </span>compact = <span class="self">self</span>.params.bit_unpacker.get(idx, <span class="kw-2">&</span><span class="self">self</span>.data); |
| <span class="self">self</span>.compact_to_u128(compact) |
| } |
| |
| <span class="kw">pub fn </span>min_value(<span class="kw-2">&</span><span class="self">self</span>) -> u128 { |
| <span class="self">self</span>.params.min_value |
| } |
| |
| <span class="kw">pub fn </span>max_value(<span class="kw-2">&</span><span class="self">self</span>) -> u128 { |
| <span class="self">self</span>.params.max_value |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| |
| <span class="kw">use </span>std::fmt; |
| |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::format_version::read_format_version; |
| <span class="kw">use </span><span class="kw">crate</span>::null_index_footer::read_null_index_footer; |
| <span class="kw">use </span><span class="kw">crate</span>::serialize::U128Header; |
| <span class="kw">use crate</span>::{open_u128, serialize_u128}; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>compact_space_test() { |
| <span class="kw">let </span>ips = <span class="kw-2">&</span>[ |
| <span class="number">2u128</span>, <span class="number">4u128</span>, <span class="number">1000</span>, <span class="number">1001</span>, <span class="number">1002</span>, <span class="number">1003</span>, <span class="number">1004</span>, <span class="number">1005</span>, <span class="number">1008</span>, <span class="number">1010</span>, <span class="number">1012</span>, <span class="number">1260</span>, |
| ] |
| .into_iter() |
| .collect(); |
| <span class="kw">let </span>compact_space = get_compact_space(ips, ips.len() <span class="kw">as </span>u32, <span class="number">11</span>); |
| <span class="kw">let </span>amplitude = compact_space.amplitude_compact_space(); |
| <span class="macro">assert_eq!</span>(amplitude, <span class="number">17</span>); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, compact_space.u128_to_compact(<span class="number">2</span>).unwrap()); |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, compact_space.u128_to_compact(<span class="number">3</span>).unwrap()); |
| <span class="macro">assert_eq!</span>(compact_space.u128_to_compact(<span class="number">100</span>).unwrap_err(), <span class="number">1</span>); |
| |
| <span class="kw">for </span>(num1, num2) <span class="kw">in </span>(<span class="number">0</span>..<span class="number">3</span>).tuple_windows() { |
| <span class="macro">assert_eq!</span>( |
| compact_space.get_range_mapping(num1).compact_end() + <span class="number">1</span>, |
| compact_space.get_range_mapping(num2).compact_start |
| ); |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>output: Vec<u8> = Vec::new(); |
| compact_space.serialize(<span class="kw-2">&mut </span>output).unwrap(); |
| |
| <span class="macro">assert_eq!</span>( |
| compact_space, |
| CompactSpace::deserialize(<span class="kw-2">&mut &</span>output[..]).unwrap() |
| ); |
| |
| <span class="kw">for </span>ip <span class="kw">in </span>ips { |
| <span class="kw">let </span>compact = compact_space.u128_to_compact(<span class="kw-2">*</span>ip).unwrap(); |
| <span class="macro">assert_eq!</span>(compact_space.compact_to_u128(compact), <span class="kw-2">*</span>ip); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>compact_space_amplitude_test() { |
| <span class="kw">let </span>ips = <span class="kw-2">&</span>[<span class="number">100000u128</span>, <span class="number">1000000</span>].into_iter().collect(); |
| <span class="kw">let </span>compact_space = get_compact_space(ips, ips.len() <span class="kw">as </span>u32, <span class="number">1</span>); |
| <span class="kw">let </span>amplitude = compact_space.amplitude_compact_space(); |
| <span class="macro">assert_eq!</span>(amplitude, <span class="number">2</span>); |
| } |
| |
| <span class="kw">fn </span>test_all(<span class="kw-2">mut </span>data: OwnedBytes, expected: <span class="kw-2">&</span>[u128]) { |
| <span class="kw">let </span>_header = U128Header::deserialize(<span class="kw-2">&mut </span>data); |
| <span class="kw">let </span>decompressor = CompactSpaceDecompressor::open(data).unwrap(); |
| <span class="kw">for </span>(idx, expected_val) <span class="kw">in </span>expected.iter().cloned().enumerate() { |
| <span class="kw">let </span>val = decompressor.get(idx <span class="kw">as </span>u32); |
| <span class="macro">assert_eq!</span>(val, expected_val); |
| |
| <span class="kw">let </span>test_range = |range: RangeInclusive<u128>| { |
| <span class="kw">let </span>expected_positions = expected |
| .iter() |
| .positions(|val| range.contains(val)) |
| .map(|pos| pos <span class="kw">as </span>u32) |
| .collect::<Vec<<span class="kw">_</span>>>(); |
| <span class="kw">let </span><span class="kw-2">mut </span>positions = Vec::new(); |
| decompressor.get_positions_for_value_range( |
| range, |
| <span class="number">0</span>..decompressor.num_vals(), |
| <span class="kw-2">&mut </span>positions, |
| ); |
| <span class="macro">assert_eq!</span>(positions, expected_positions); |
| }; |
| |
| test_range(expected_val.saturating_sub(<span class="number">1</span>)..=expected_val); |
| test_range(expected_val..=expected_val); |
| test_range(expected_val..=expected_val.saturating_add(<span class="number">1</span>)); |
| test_range(expected_val.saturating_sub(<span class="number">1</span>)..=expected_val.saturating_add(<span class="number">1</span>)); |
| } |
| } |
| |
| <span class="kw">fn </span>test_aux_vals(u128_vals: <span class="kw-2">&</span>[u128]) -> OwnedBytes { |
| <span class="kw">let </span><span class="kw-2">mut </span>out = Vec::new(); |
| serialize_u128( |
| || u128_vals.iter().cloned(), |
| u128_vals.len() <span class="kw">as </span>u32, |
| <span class="kw-2">&mut </span>out, |
| ) |
| .unwrap(); |
| |
| <span class="kw">let </span>data = OwnedBytes::new(out); |
| <span class="kw">let </span>(data, _format_version) = read_format_version(data).unwrap(); |
| <span class="kw">let </span>(data, _null_index_footer) = read_null_index_footer(data).unwrap(); |
| test_all(data.clone(), u128_vals); |
| |
| data |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_range_1() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[ |
| <span class="number">1u128</span>, |
| <span class="number">100u128</span>, |
| <span class="number">3u128</span>, |
| <span class="number">99999u128</span>, |
| <span class="number">100000u128</span>, |
| <span class="number">100001u128</span>, |
| <span class="number">4_000_211_221u128</span>, |
| <span class="number">4_000_211_222u128</span>, |
| <span class="number">333u128</span>, |
| ]; |
| <span class="kw">let </span><span class="kw-2">mut </span>data = test_aux_vals(vals); |
| |
| <span class="kw">let </span>_header = U128Header::deserialize(<span class="kw-2">&mut </span>data); |
| <span class="kw">let </span>decomp = CompactSpaceDecompressor::open(data).unwrap(); |
| <span class="kw">let </span>complete_range = <span class="number">0</span>..vals.len() <span class="kw">as </span>u32; |
| <span class="kw">for </span>(pos, val) <span class="kw">in </span>vals.iter().enumerate() { |
| <span class="kw">let </span>val = <span class="kw-2">*</span>val <span class="kw">as </span>u128; |
| <span class="kw">let </span>pos = pos <span class="kw">as </span>u32; |
| <span class="kw">let </span><span class="kw-2">mut </span>positions = Vec::new(); |
| decomp.get_positions_for_value_range(val..=val, pos..pos + <span class="number">1</span>, <span class="kw-2">&mut </span>positions); |
| <span class="macro">assert_eq!</span>(positions, <span class="macro">vec!</span>[pos]); |
| } |
| |
| <span class="comment">// handle docid range out of bounds |
| </span><span class="kw">let </span>positions = get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">1</span>, <span class="number">1</span>..u32::MAX); |
| <span class="macro">assert_eq!</span>(positions, <span class="macro">vec!</span>[]); |
| |
| <span class="kw">let </span>positions = |
| get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">1</span>, complete_range.clone()); |
| <span class="macro">assert_eq!</span>(positions, <span class="macro">vec!</span>[<span class="number">0</span>]); |
| <span class="kw">let </span>positions = |
| get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">2</span>, complete_range.clone()); |
| <span class="macro">assert_eq!</span>(positions, <span class="macro">vec!</span>[<span class="number">0</span>]); |
| <span class="kw">let </span>positions = |
| get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">3</span>, complete_range.clone()); |
| <span class="macro">assert_eq!</span>(positions, <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">2</span>]); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">99999u128</span>..=<span class="number">99999u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">3</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">99999u128</span>..=<span class="number">100000u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">3</span>, <span class="number">4</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">99998u128</span>..=<span class="number">100000u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">3</span>, <span class="number">4</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">99998u128</span>..=<span class="number">99999u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">3</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">99998u128</span>..=<span class="number">99998u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">333u128</span>..=<span class="number">333u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">8</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">332u128</span>..=<span class="number">333u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">8</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">332u128</span>..=<span class="number">334u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">8</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">333u128</span>..=<span class="number">334u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">8</span>] |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&</span>decomp, |
| <span class="number">4_000_211_221u128</span>..=<span class="number">5_000_000_000u128</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">6</span>, <span class="number">7</span>] |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_empty() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[]; |
| <span class="kw">let </span>data = test_aux_vals(vals); |
| <span class="kw">let </span>_decomp = CompactSpaceDecompressor::open(data).unwrap(); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_range_2() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[ |
| <span class="number">100u128</span>, |
| <span class="number">99999u128</span>, |
| <span class="number">100000u128</span>, |
| <span class="number">100001u128</span>, |
| <span class="number">4_000_211_221u128</span>, |
| <span class="number">4_000_211_222u128</span>, |
| <span class="number">333u128</span>, |
| ]; |
| <span class="kw">let </span><span class="kw-2">mut </span>data = test_aux_vals(vals); |
| <span class="kw">let </span>_header = U128Header::deserialize(<span class="kw-2">&mut </span>data); |
| <span class="kw">let </span>decomp = CompactSpaceDecompressor::open(data).unwrap(); |
| <span class="kw">let </span>complete_range = <span class="number">0</span>..vals.len() <span class="kw">as </span>u32; |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">5</span>, complete_range.clone()), |
| <span class="macro">vec!</span>[] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">100</span>, complete_range.clone()), |
| <span class="macro">vec!</span>[<span class="number">0</span>] |
| ); |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper(<span class="kw-2">&</span>decomp, <span class="number">0</span>..=<span class="number">105</span>, complete_range.clone()), |
| <span class="macro">vec!</span>[<span class="number">0</span>] |
| ); |
| } |
| |
| <span class="kw">fn </span>get_positions_for_value_range_helper<C: Column<T> + <span class="question-mark">?</span>Sized, T: PartialOrd + fmt::Debug>( |
| column: <span class="kw-2">&</span>C, |
| value_range: RangeInclusive<T>, |
| doc_id_range: Range<u32>, |
| ) -> Vec<u32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>positions = Vec::new(); |
| column.get_docids_for_value_range(value_range, doc_id_range, <span class="kw-2">&mut </span>positions); |
| positions |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_range_3() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[ |
| <span class="number">200u128</span>, |
| <span class="number">201</span>, |
| <span class="number">202</span>, |
| <span class="number">203</span>, |
| <span class="number">204</span>, |
| <span class="number">204</span>, |
| <span class="number">206</span>, |
| <span class="number">207</span>, |
| <span class="number">208</span>, |
| <span class="number">209</span>, |
| <span class="number">210</span>, |
| <span class="number">1_000_000</span>, |
| <span class="number">5_000_000_000</span>, |
| ]; |
| <span class="kw">let </span><span class="kw-2">mut </span>out = Vec::new(); |
| serialize_u128(|| vals.iter().cloned(), vals.len() <span class="kw">as </span>u32, <span class="kw-2">&mut </span>out).unwrap(); |
| <span class="kw">let </span>decomp = open_u128::<u128>(OwnedBytes::new(out)).unwrap(); |
| <span class="kw">let </span>complete_range = <span class="number">0</span>..vals.len() <span class="kw">as </span>u32; |
| |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper(<span class="kw-2">&*</span>decomp, <span class="number">199</span>..=<span class="number">200</span>, complete_range.clone()), |
| <span class="macro">vec!</span>[<span class="number">0</span>] |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper(<span class="kw-2">&*</span>decomp, <span class="number">199</span>..=<span class="number">201</span>, complete_range.clone()), |
| <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">1</span>] |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper(<span class="kw-2">&*</span>decomp, <span class="number">200</span>..=<span class="number">200</span>, complete_range.clone()), |
| <span class="macro">vec!</span>[<span class="number">0</span>] |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| get_positions_for_value_range_helper( |
| <span class="kw-2">&*</span>decomp, |
| <span class="number">1_000_000</span>..=<span class="number">1_000_000</span>, |
| complete_range.clone() |
| ), |
| <span class="macro">vec!</span>[<span class="number">11</span>] |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_bug1() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[<span class="number">9223372036854775806</span>]; |
| <span class="kw">let </span>_data = test_aux_vals(vals); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_bug2() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[<span class="number">340282366920938463463374607431768211455u128</span>]; |
| <span class="kw">let </span>_data = test_aux_vals(vals); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_bug3() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[<span class="number">340282366920938463463374607431768211454</span>]; |
| <span class="kw">let </span>_data = test_aux_vals(vals); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_bug4() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[<span class="number">340282366920938463463374607431768211455</span>, <span class="number">0</span>]; |
| <span class="kw">let </span>_data = test_aux_vals(vals); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_first_large_gaps() { |
| <span class="kw">let </span>vals = <span class="kw-2">&</span>[<span class="number">1_000_000_000u128</span>; <span class="number">100</span>]; |
| <span class="kw">let </span>_data = test_aux_vals(vals); |
| } |
| <span class="kw">use </span>itertools::Itertools; |
| <span class="kw">use </span>proptest::prelude::<span class="kw-2">*</span>; |
| |
| <span class="kw">fn </span>num_strategy() -> <span class="kw">impl </span>Strategy<Value = u128> { |
| <span class="macro">prop_oneof!</span>[ |
| <span class="number">1 </span>=> prop::num::u128::ANY.prop_map(|num| u128::MAX - (num % <span class="number">10</span>) ), |
| <span class="number">1 </span>=> prop::num::u128::ANY.prop_map(|num| i64::MAX <span class="kw">as </span>u128 + <span class="number">5 </span>- (num % <span class="number">10</span>) ), |
| <span class="number">1 </span>=> prop::num::u128::ANY.prop_map(|num| i128::MAX <span class="kw">as </span>u128 + <span class="number">5 </span>- (num % <span class="number">10</span>) ), |
| <span class="number">1 </span>=> prop::num::u128::ANY.prop_map(|num| num % <span class="number">10 </span>), |
| <span class="number">20 </span>=> prop::num::u128::ANY, |
| ] |
| } |
| |
| <span class="macro">proptest! </span>{ |
| <span class="attribute">#![proptest_config(ProptestConfig::with_cases(<span class="number">10</span>))] |
| |
| #[test] |
| </span><span class="kw">fn </span>compress_decompress_random(vals <span class="kw">in </span>proptest::collection::vec(num_strategy() |
| , <span class="number">1</span>..<span class="number">1000</span>)) { |
| <span class="kw">let </span>_data = test_aux_vals(<span class="kw-2">&</span>vals); |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="fastfield_codecs" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
