Add the `simd` feature to enable simd-json

This doesn't yet work, but this is the cargo part of the implementation

.cargo/config

@@ -0,0 +1,2 @@
+[build]
+rustflags = ["-C", "target-cpu=native"]

Cargo.lock

@@ -618,6 +618,15 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "float-cmp"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da62c4f1b81918835a8c6a484a397775fff5953fe83529afd51b05f5c6a6617d"
+dependencies = [
+ "num-traits 0.2.12",
+]
+
 [[package]]
 name = "futures"
 version = "0.3.5"
@@ -772,6 +781,16 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "halfbrown"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c12499524b5585419ab2f51545a19b842263a373580a83c0eb98a0142a260a10"
+dependencies = [
+ "hashbrown",
+ "serde 1.0.114",
+]
+
 [[package]]
 name = "handlebars"
 version = "3.0.1"
@@ -786,6 +805,16 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96282e96bfcd3da0d3aa9938bedf1e50df3269b6db08b4876d2da0bb1a0841cf"
+dependencies = [
+ "ahash",
+ "autocfg",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.1"
@@ -849,6 +878,7 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "serde_regex",
+ "simd-json",
  "smol",
  "strum",
  "strum_macros",
@@ -1710,6 +1740,18 @@ dependencies = [
  "opaque-debug",
 ]
 
+[[package]]
+name = "simd-json"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc89d07bde0ea8bed2559b48d735bb753aff4305f20841bb42a9021a456fe486"
+dependencies = [
+ "halfbrown",
+ "serde 1.0.114",
+ "serde_json",
+ "value-trait",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.2"
@@ -2098,6 +2140,18 @@ dependencies = [
  "rand",
 ]
 
+[[package]]
+name = "value-trait"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0901856b3f57c2c00d2c12f76b1c5ca409bddbad8c38a5241becdc6ef48e061"
+dependencies = [
+ "float-cmp",
+ "halfbrown",
+ "itoa",
+ "ryu",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.10"

Cargo.toml

@@ -4,7 +4,10 @@ version = "0.3.3"
 authors = ["R. Tyler Croy <rtyler+hotdog@brokenco.de>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[features]
+default = []
+simd = ["simd-json"]
 
 [dependencies]
 # Base asynchronous runtime
@@ -52,6 +55,9 @@ serde_json = "~1.0.0"
 # Helpful to deserialize our regular expressions directly from the
 # configuration file
 serde_regex = "~0.4.0"
+
+simd-json = { version = "~0.3.14", optional = true}
+
 smol = "~0.1.18"
 # Needed to do clever enum/derive tricks for strings
 strum = "0.18.0"

src/main.rs

@@ -13,6 +13,8 @@ extern crate serde;
 #[macro_use]
 extern crate serde_derive;
 extern crate serde_regex;
+#[cfg(feature = "simd")]
+extern crate simd_json;
 extern crate strum;
 extern crate syslog_loose;
 extern crate syslog_rfc5424;