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-rw-r--r--third_party/rust/basic-toml/examples/decode.rs54
1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/rust/basic-toml/examples/decode.rs b/third_party/rust/basic-toml/examples/decode.rs
new file mode 100644
index 0000000000..21e438294a
--- /dev/null
+++ b/third_party/rust/basic-toml/examples/decode.rs
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+//! An example showing off the usage of `Deserialize` to automatically decode
+//! TOML into a Rust `struct`
+
+#![deny(warnings)]
+#![allow(dead_code)]
+
+use serde_derive::Deserialize;
+
+/// This is what we're going to decode into. Each field is optional, meaning
+/// that it doesn't have to be present in TOML.
+#[derive(Debug, Deserialize)]
+struct Config {
+ global_string: Option<String>,
+ global_integer: Option<u64>,
+ server: Option<ServerConfig>,
+ peers: Option<Vec<PeerConfig>>,
+}
+
+/// Sub-structs are decoded from tables, so this will decode from the `[server]`
+/// table.
+///
+/// Again, each field is optional, meaning they don't have to be present.
+#[derive(Debug, Deserialize)]
+struct ServerConfig {
+ ip: Option<String>,
+ port: Option<u64>,
+}
+
+#[derive(Debug, Deserialize)]
+struct PeerConfig {
+ ip: Option<String>,
+ port: Option<u64>,
+}
+
+fn main() {
+ let toml_str = r#"
+ global_string = "test"
+ global_integer = 5
+
+ [server]
+ ip = "127.0.0.1"
+ port = 80
+
+ [[peers]]
+ ip = "127.0.0.1"
+ port = 8080
+
+ [[peers]]
+ ip = "127.0.0.1"
+ "#;
+
+ let decoded: Config = basic_toml::from_str(toml_str).unwrap();
+ println!("{:#?}", decoded);
+}