Add Rust folder for experiments etc

rust/Cargo.lock

+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "rust"
+version = "0.1.0"

rust/Cargo.toml

+[package]
+name = "rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

rust/README.md

+# Rust Snippets
+
+This is the Rust snippet heap. All the Rust code I actually have to have in `.rs` files is found here.
+
+## Creating MIR control-flow graphs
+
+We create a CFG by running `rustc` on a file with some options to emit a `.dot` file instead of a compiled binary:
+
+```bash
+rustc --emit mir -Z dump-mir=F -Z dump-mir-dataflow -Z unpretty=mir-cfg path/to/file.rs > mir.dot
+```
+
+We can then convert it to SVG if we want to:
+
+```bash
+dot -T svg -o mir.svg mir.dot
+```
\ No newline at end of file

rust/mir.dot

+digraph Mir_0_3 {
+    graph [fontname="Courier, monospace"];
+    node [fontname="Courier, monospace"];
+    edge [fontname="Courier, monospace"];
+    label=<fn main() -&gt; ()<br align="left"/>let mut _1: i32;<br align="left"/>let _2: &amp;i32;<br align="left"/>let _3: ();<br align="left"/>let mut _4: std::fmt::Arguments;<br align="left"/>let mut _5: &amp;[&amp;str];<br align="left"/>let mut _6: &amp;[&amp;str; 2];<br align="left"/>let _7: &amp;[&amp;str; 2];<br align="left"/>let mut _8: &amp;[std::fmt::ArgumentV1];<br align="left"/>let mut _9: &amp;[std::fmt::ArgumentV1; 1];<br align="left"/>let _10: &amp;[std::fmt::ArgumentV1; 1];<br align="left"/>let _11: [std::fmt::ArgumentV1; 1];<br align="left"/>let mut _12: std::fmt::ArgumentV1;<br align="left"/>let mut _13: &amp;&amp;i32;<br align="left"/>let _14: &amp;&amp;i32;<br align="left"/>let mut _15: (i32, bool);<br align="left"/>let mut _16: &amp;[&amp;str; 2];<br align="left"/>debug x =&gt; _1;<br align="left"/>debug xref =&gt; _2;<br align="left"/>>;
+    bb0__0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">0</td></tr><tr><td align="left" balign="left">_1 = const 0_i32<br/>_2 = &amp;_1<br/>_16 = const main::promoted[0]<br/>_7 = _16<br/>_6 = _7<br/>_5 = move _6 as &amp;[&amp;str] (Pointer(Unsize))<br/>_14 = &amp;_2<br/>_13 = _14<br/></td></tr><tr><td align="left">_12 = ArgumentV1::new_display::&lt;&amp;i32&gt;(move _13)</td></tr></table>>];
+    bb1__0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">1</td></tr><tr><td align="left" balign="left">_11 = [move _12]<br/>_10 = &amp;_11<br/>_9 = _10<br/>_8 = move _9 as &amp;[std::fmt::ArgumentV1] (Pointer(Unsize))<br/></td></tr><tr><td align="left">_4 = Arguments::new_v1(move _5, move _8)</td></tr></table>>];
+    bb2__0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">2</td></tr><tr><td align="left">_3 = _print(move _4)</td></tr></table>>];
+    bb3__0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">3</td></tr><tr><td align="left" balign="left">_15 = CheckedAdd(_1, const 1_i32)<br/></td></tr><tr><td align="left">assert(!move (_15.1: bool), &quot;attempt to compute `{} + {}`, which would overflow&quot;, _1, const 1_i32)</td></tr></table>>];
+    bb4__0_3 [shape="none", label=<<table border="0" cellborder="1" cellspacing="0"><tr><td bgcolor="gray" align="center" colspan="1">4</td></tr><tr><td align="left" balign="left">_1 = move (_15.0: i32)<br/></td></tr><tr><td align="left">return</td></tr></table>>];
+    bb0__0_3 -> bb1__0_3 [label="return"];
+    bb1__0_3 -> bb2__0_3 [label="return"];
+    bb2__0_3 -> bb3__0_3 [label="return"];
+    bb3__0_3 -> bb4__0_3 [label=""];
+}

rust/src/main.rs

+fn main() {
+    let mut x = 0;
+    let xref = &x;
+    println!("{xref}");
+    x += 1;
+}