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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/arbitrary/examples
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--third_party/rust/arbitrary/examples/derive_enum.rs27
1 files changed, 27 insertions, 0 deletions
diff --git a/third_party/rust/arbitrary/examples/derive_enum.rs b/third_party/rust/arbitrary/examples/derive_enum.rs
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+++ b/third_party/rust/arbitrary/examples/derive_enum.rs
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+//! A simple example of deriving the `Arbitrary` trait for an `enum`.
+//!
+//! Note that this requires enabling the "derive" cargo feature.
+
+// Various enums/fields that we are deriving `Arbitrary` for aren't actually
+// used except to show off the derive.
+#![allow(dead_code)]
+
+use arbitrary::{Arbitrary, Unstructured};
+
+#[derive(Arbitrary, Debug)]
+enum MyEnum {
+ UnitVariant,
+ TupleVariant(bool, u32),
+ StructVariant { x: i8, y: (u8, i32) },
+}
+
+fn main() {
+ let raw = b"This is some raw, unstructured data!";
+
+ let mut unstructured = Unstructured::new(raw);
+
+ let instance = MyEnum::arbitrary(&mut unstructured)
+ .expect("`unstructured` has enough underlying data to create all variants of `MyEnum`");
+
+ println!("Here is an arbitrary enum: {:?}", instance);
+}