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<!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="Collects per-column bounds and passthrough atoms from a pure `AND` tree."><title>collect_conjunction_bounds in partition::utils::split - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="partition" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../../static.files/storage-41dd4d93.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc fn"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">collect_conjunction_bounds</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../partition/index.html">partition</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"><h2><a href="index.html">In partition::<wbr>utils::<wbr>split</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../index.html">partition</a>::<wbr><a href="../index.html">utils</a>::<wbr><a href="index.html">split</a></div><h1>Function <span class="fn">collect_<wbr>conjunction_<wbr>bounds</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../../src/partition/utils/split.rs.html#567-656">Source</a> </span></div><pre class="rust item-decl"><code>fn collect_conjunction_bounds(
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expr: &<a class="struct" href="../../expr/struct.PartitionExpr.html" title="struct partition::expr::PartitionExpr">PartitionExpr</a>,
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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.CollectedConjunction.html" title="struct partition::utils::split::CollectedConjunction">CollectedConjunction</a>></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Collects per-column bounds and passthrough atoms from a pure <code>AND</code> tree.</p>
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<p>Scope and intent:</p>
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<ul>
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<li>This helper is shared by <a href="fn.is_empty_and_conjunction.html" title="fn partition::utils::split::is_empty_and_conjunction"><code>is_empty_and_conjunction</code></a> and
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<a href="fn.simplify_and_bounds.html" title="fn partition::utils::split::simplify_and_bounds"><code>simplify_and_bounds</code></a> so both paths interpret conjunction atoms the same
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way.</li>
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<li>It only handles conjunction-only expressions. If any <code>OR</code> is present, it
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returns <code>None</code> and lets callers keep their conservative fallback behavior.</li>
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</ul>
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<p>Behavior:</p>
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<ul>
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<li>Tightest lower/upper bounds are recorded per column.</li>
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<li><code>=</code> contributes both a lower and an upper bound at the same value.</li>
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<li><code>!=</code> and non-range atoms are preserved in <code>passthrough</code> for callers that
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need to rebuild the conjunction.</li>
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<li><code>has_conflict</code> is set when atomic constraints already contradict each
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other (for example <code>a = 1 AND a <> 1</code>).</li>
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</ul>
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<p>Notes:</p>
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<ul>
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<li>This helper is intentionally a bit more general than the current
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<code>split_partition_expr</code> contract, which now only feeds range-only
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conjunctions into the main split path.</li>
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</ul>
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</div></details></section></div></main></body></html> |