From f7e3f45cf3da149dbb772bb9fc91c626f7c4499d Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Tue, 18 Mar 2025 13:40:42 +0100
Subject: [PATCH] Create rule S7200: Avoid resizing a vector to zero using
 `vec.resize(0, value)` (#4677)

---
 docs/link_formatting.adoc      |  1 +
 rules/S7200/metadata.json      |  2 ++
 rules/S7200/rust/metadata.json | 24 ++++++++++++++++++++++++
 rules/S7200/rust/rule.adoc     | 30 ++++++++++++++++++++++++++++++
 4 files changed, 57 insertions(+)
 create mode 100644 rules/S7200/metadata.json
 create mode 100644 rules/S7200/rust/metadata.json
 create mode 100644 rules/S7200/rust/rule.adoc

diff --git a/docs/link_formatting.adoc b/docs/link_formatting.adoc
index faa220e686..9d5e305f1c 100644
--- a/docs/link_formatting.adoc
+++ b/docs/link_formatting.adoc
@@ -45,6 +45,7 @@ When web pages have massively long names like "Java™ Platform, Standard Editio
 * AWS blog - https://aws.amazon.com/blogs
 * Azure Documentation - https://learn.microsoft.com/en-us/azure/?product=popular
 * CERT - https://wiki.sei.cmu.edu/confluence/display/seccode
+* Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html
 * {cpp} reference - https://en.cppreference.com/w/
 * {cpp} Core Guidelines - https://github.com/isocpp/CppCoreGuidelines/blob/e49158a/CppCoreGuidelines.md
 * CVE - https://cve.mitre.org
diff --git a/rules/S7200/metadata.json b/rules/S7200/metadata.json
new file mode 100644
index 0000000000..2c63c08510
--- /dev/null
+++ b/rules/S7200/metadata.json
@@ -0,0 +1,2 @@
+{
+}
diff --git a/rules/S7200/rust/metadata.json b/rules/S7200/rust/metadata.json
new file mode 100644
index 0000000000..e81f240918
--- /dev/null
+++ b/rules/S7200/rust/metadata.json
@@ -0,0 +1,24 @@
+{
+  "title": "Avoid resizing a vector to zero using `vec.resize(0, value)`",
+  "type": "BUG",
+  "status": "ready",
+  "remediation": {
+    "func": "Constant\/Issue",
+    "constantCost": "5min"
+  },
+  "tags": [
+    "clippy"
+  ],
+  "defaultSeverity": "Major",
+  "ruleSpecification": "RSPEC-7200",
+  "sqKey": "S7200",
+  "scope": "All",
+  "defaultQualityProfiles": ["Sonar way"],
+  "quickfix": "unknown",
+  "code": {
+    "impacts": {
+      "MAINTAINABILITY": "LOW"
+    },
+    "attribute": "CLEAR"
+  }
+}
diff --git a/rules/S7200/rust/rule.adoc b/rules/S7200/rust/rule.adoc
new file mode 100644
index 0000000000..66cb898442
--- /dev/null
+++ b/rules/S7200/rust/rule.adoc
@@ -0,0 +1,30 @@
+== Why is this an issue?
+
+Resizing a vector to zero using `vec.resize(0, value)` is misleading. It's either unreadable if the intent was simply to clear the vector, making the code harder to understand, or suspicious and unintentional if a resize was actually expected, but the arguments were accidentally swapped.
+
+== How to fix it
+
+Replace `vec.resize(0, value)` with `vec.clear()`, or swap the `vec.resize` arguments.
+
+=== Code examples
+
+==== Noncompliant code example
+
+[source,rust,diff-id=1,diff-type=noncompliant]
+----
+let mut vec = vec![1, 2, 3, 4, 5];
+vec.resize(0, 5); // Noncompliant: Resizing the vector to 0.
+----
+
+==== Compliant solution
+
+[source,rust,diff-id=1,diff-type=compliant]
+----
+let mut vec = vec![1, 2, 3, 4, 5];
+vec.clear(); // Compliant: Clear the vector.
+----
+
+== Resources
+=== Documentation
+
+* Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#vec_resize_to_zero