From 4732603a42c76ea53ab6a4d7358380f4d0194c48 Mon Sep 17 00:00:00 2001 From: William Carroll Date: Tue, 9 Aug 2022 10:20:03 -0700 Subject: feat(wpcarro/rust): Include std::fmt::Display example Gotta know how to `to_string` things Change-Id: I259ef61ecaf6ae7fabe0b3d211706ba5f429b3a7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6057 Reviewed-by: wpcarro Autosubmit: wpcarro Tested-by: BuildkiteCI --- users/wpcarro/scratch/rust/Cargo.lock | 89 +++++++++++++++++++++++++++ users/wpcarro/scratch/rust/Cargo.toml | 8 +++ users/wpcarro/scratch/rust/json/Cargo.lock | 39 ------------ users/wpcarro/scratch/rust/json/Cargo.toml | 8 --- users/wpcarro/scratch/rust/json/src/main.rs | 89 --------------------------- users/wpcarro/scratch/rust/src/display/mod.rs | 13 ++++ users/wpcarro/scratch/rust/src/json/mod.rs | 81 ++++++++++++++++++++++++ users/wpcarro/scratch/rust/src/main.rs | 18 ++++++ 8 files changed, 209 insertions(+), 136 deletions(-) create mode 100644 users/wpcarro/scratch/rust/Cargo.lock create mode 100644 users/wpcarro/scratch/rust/Cargo.toml delete mode 100644 users/wpcarro/scratch/rust/json/Cargo.lock delete mode 100644 users/wpcarro/scratch/rust/json/Cargo.toml delete mode 100644 users/wpcarro/scratch/rust/json/src/main.rs create mode 100644 users/wpcarro/scratch/rust/src/display/mod.rs create mode 100644 users/wpcarro/scratch/rust/src/json/mod.rs create mode 100644 users/wpcarro/scratch/rust/src/main.rs (limited to 'users') diff --git a/users/wpcarro/scratch/rust/Cargo.lock b/users/wpcarro/scratch/rust/Cargo.lock new file mode 100644 index 000000000000..28aa1250cea4 --- /dev/null +++ b/users/wpcarro/scratch/rust/Cargo.lock @@ -0,0 +1,89 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "itoa" +version = "1.0.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d" + +[[package]] +name = "proc-macro2" +version = "1.0.43" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab" +dependencies = [ + "unicode-ident", +] + +[[package]] +name = "quote" +version = "1.0.21" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179" +dependencies = [ + "proc-macro2", +] + +[[package]] +name = "rust" +version = "0.1.0" +dependencies = [ + "serde", + "serde_json", +] + +[[package]] +name = "ryu" +version = "1.0.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695" + +[[package]] +name = "serde" +version = "1.0.137" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "61ea8d54c77f8315140a05f4c7237403bf38b72704d031543aa1d16abbf517d1" +dependencies = [ + "serde_derive", +] + +[[package]] +name = "serde_derive" +version = "1.0.137" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1f26faba0c3959972377d3b2d306ee9f71faee9714294e41bb777f83f88578be" +dependencies = [ + "proc-macro2", + "quote", + "syn", +] + +[[package]] +name = "serde_json" +version = "1.0.81" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c" +dependencies = [ + "itoa", + "ryu", + "serde", +] + +[[package]] +name = "syn" +version = "1.0.99" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13" +dependencies = [ + "proc-macro2", + "quote", + "unicode-ident", +] + +[[package]] +name = "unicode-ident" +version = "1.0.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf" diff --git a/users/wpcarro/scratch/rust/Cargo.toml b/users/wpcarro/scratch/rust/Cargo.toml new file mode 100644 index 000000000000..76235d11d37d --- /dev/null +++ b/users/wpcarro/scratch/rust/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "rust" +version = "0.1.0" +edition = "2021" + +[dependencies] +serde_json = "1.0.81" +serde = { version = "1.0.137", features = ["derive"] } diff --git a/users/wpcarro/scratch/rust/json/Cargo.lock b/users/wpcarro/scratch/rust/json/Cargo.lock deleted file mode 100644 index a3b92976ec08..000000000000 --- a/users/wpcarro/scratch/rust/json/Cargo.lock +++ /dev/null @@ -1,39 +0,0 @@ -# This file is automatically @generated by Cargo. -# It is not intended for manual editing. -version = 3 - -[[package]] -name = "itoa" -version = "1.0.2" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d" - -[[package]] -name = "rust" -version = "0.1.0" -dependencies = [ - "serde_json", -] - -[[package]] -name = "ryu" -version = "1.0.10" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695" - -[[package]] -name = "serde" -version = "1.0.137" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "61ea8d54c77f8315140a05f4c7237403bf38b72704d031543aa1d16abbf517d1" - -[[package]] -name = "serde_json" -version = "1.0.81" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c" -dependencies = [ - "itoa", - "ryu", - "serde", -] diff --git a/users/wpcarro/scratch/rust/json/Cargo.toml b/users/wpcarro/scratch/rust/json/Cargo.toml deleted file mode 100644 index 76235d11d37d..000000000000 --- a/users/wpcarro/scratch/rust/json/Cargo.toml +++ /dev/null @@ -1,8 +0,0 @@ -[package] -name = "rust" -version = "0.1.0" -edition = "2021" - -[dependencies] -serde_json = "1.0.81" -serde = { version = "1.0.137", features = ["derive"] } diff --git a/users/wpcarro/scratch/rust/json/src/main.rs b/users/wpcarro/scratch/rust/json/src/main.rs deleted file mode 100644 index 6481224fffe7..000000000000 --- a/users/wpcarro/scratch/rust/json/src/main.rs +++ /dev/null @@ -1,89 +0,0 @@ -use serde::{Deserialize, Serialize}; -use serde_json::{json, Value}; - -// From the serde_json docs: -// -// > There are three common ways that you might find yourself needing to work -// > with JSON data in Rust. -// > -// > 1. As text data. An unprocessed string of JSON data that you receive on an -// > HTTP endpoint, read from a file, or prepare to send to a remote server. -// > 2. As an untyped or loosely typed representation. Maybe you want to check -// > that some JSON data is valid before passing it on, but without knowing -// > the structure of what it contains. Or you want to do very basic -// > manipulations like insert a key in a particular spot. -// > 3. As a strongly typed Rust data structure. When you expect all or most of -// > your data to conform to a particular structure and want to get real work -// > done without JSON’s loosey-goosey nature tripping you up. -// -// So let's take a look at all three... - -//////////////////////////////////////////////////////////////////////////////// -// Types -//////////////////////////////////////////////////////////////////////////////// - -#[derive(Serialize, Deserialize, Debug)] -struct Person { - fname: String, - lname: String, - age: u8, -} - -//////////////////////////////////////////////////////////////////////////////// -// Functions -//////////////////////////////////////////////////////////////////////////////// - -// 1) Reading/writing from/to plain text. -// TL;DR: -// - read: serde_json::from_str(data) -// - write: x.to_string() -fn one() { - let data = json!({ - "fname": "William", - "lname": "Carroll", - "age": 30, - }) - .to_string(); - - println!("result: {:?}", data); -} - -// 2) Parse into a loosely typed representation; mutate it; serialize it back. -// TL;DR: -// - read: serde_json::from_str(data) -// - write: x.to_string() -fn two() { - let data = r#"{"fname":"William","lname":"Carroll","age":30}"#; - - let mut parsed: Value = serde_json::from_str(data).unwrap(); - parsed["fname"] = json!("Norm"); - parsed["lname"] = json!("Macdonald"); - parsed["age"] = json!(61); - - let result = parsed.to_string(); - println!("result: {:?}", result); -} - -// 3) Parse into a strongly typed structure. -// TL;DR: -// - read: serde_json::from_str(data) -// - write: serde_json::to_string(x).unwrap() -fn three() { - let data = r#"{"fname":"William","lname":"Carroll","age":30}"#; - - let mut read: Person = serde_json::from_str(data).unwrap(); - read.fname = "Norm".to_string(); - read.lname = "Macdonald".to_string(); - read.age = 61; - - let write = serde_json::to_string(&read).unwrap(); - println!("result: {:?}", write); -} - -//////////////////////////////////////////////////////////////////////////////// -// Main -//////////////////////////////////////////////////////////////////////////////// - -fn main() { - three() -} diff --git a/users/wpcarro/scratch/rust/src/display/mod.rs b/users/wpcarro/scratch/rust/src/display/mod.rs new file mode 100644 index 000000000000..838463109190 --- /dev/null +++ b/users/wpcarro/scratch/rust/src/display/mod.rs @@ -0,0 +1,13 @@ +use std::fmt; + +pub struct Person { + pub fname: String, + pub lname: String, + pub age: i8, +} + +impl fmt::Display for Person { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "{}, {} ({} years old)", self.lname, self.fname, self.age) + } +} diff --git a/users/wpcarro/scratch/rust/src/json/mod.rs b/users/wpcarro/scratch/rust/src/json/mod.rs new file mode 100644 index 000000000000..d3307b394ea4 --- /dev/null +++ b/users/wpcarro/scratch/rust/src/json/mod.rs @@ -0,0 +1,81 @@ +use serde::{Deserialize, Serialize}; +use serde_json::{json, Value}; + +// From the serde_json docs: +// +// > There are three common ways that you might find yourself needing to work +// > with JSON data in Rust. +// > +// > 1. As text data. An unprocessed string of JSON data that you receive on an +// > HTTP endpoint, read from a file, or prepare to send to a remote server. +// > 2. As an untyped or loosely typed representation. Maybe you want to check +// > that some JSON data is valid before passing it on, but without knowing +// > the structure of what it contains. Or you want to do very basic +// > manipulations like insert a key in a particular spot. +// > 3. As a strongly typed Rust data structure. When you expect all or most of +// > your data to conform to a particular structure and want to get real work +// > done without JSON’s loosey-goosey nature tripping you up. +// +// So let's take a look at all three... + +//////////////////////////////////////////////////////////////////////////////// +// Types +//////////////////////////////////////////////////////////////////////////////// + +#[derive(Serialize, Deserialize, Debug)] +struct Person { + fname: String, + lname: String, + age: u8, +} + +//////////////////////////////////////////////////////////////////////////////// +// Functions +//////////////////////////////////////////////////////////////////////////////// + +// 1) Reading/writing from/to plain text. +// TL;DR: +// - read: serde_json::from_str(data) +// - write: x.to_string() +pub fn one() { + let data = json!({ + "fname": "William", + "lname": "Carroll", + "age": 30, + }) + .to_string(); + + println!("result: {:?}", data); +} + +// 2) Parse into a loosely typed representation; mutate it; serialize it back. +// TL;DR: +// - read: serde_json::from_str(data) +// - write: x.to_string() +pub fn two() { + let data = r#"{"fname":"William","lname":"Carroll","age":30}"#; + + let mut parsed: Value = serde_json::from_str(data).unwrap(); + parsed["fname"] = json!("Norm"); + parsed["lname"] = json!("Macdonald"); + parsed["age"] = json!(61); + + let result = parsed.to_string(); + println!("result: {:?}", result); +} + +// 3) Parse into a strongly typed structure. +// TL;DR: +// - read: serde_json::from_str(data) +// - write: serde_json::to_string(x).unwrap() +pub fn three() { + let data = r#"{"fname":"William","lname":"Carroll","age":30}"#; + + let mut read: Person = serde_json::from_str(data).unwrap(); + read.fname = "Norm".to_string(); + read.lname = "Macdonald".to_string(); + read.age = 61; + + let write = serde_json::to_string(&read).unwrap(); + println!("result: {:?}", write); +} diff --git a/users/wpcarro/scratch/rust/src/main.rs b/users/wpcarro/scratch/rust/src/main.rs new file mode 100644 index 000000000000..da9e3d3c637c --- /dev/null +++ b/users/wpcarro/scratch/rust/src/main.rs @@ -0,0 +1,18 @@ +use serde::{Deserialize, Serialize}; +use serde_json::{json, Value}; + +mod display; +mod json; + +//////////////////////////////////////////////////////////////////////////////// +// Main +//////////////////////////////////////////////////////////////////////////////// + +fn main() { + let john: display::Person = display::Person { + fname: "John".to_string(), + lname: "Cleese".to_string(), + age: 82, + }; + println!("Person: {}", john) +} -- cgit 1.4.1