feat: support ron (#162)

Author: rawkode

Cargo.lock

@@ -9,6 +9,7 @@ miette = "7.6.0"
 regex = "1.11.1"
 relative-path = "2.0.1"
 reqwest = { version = "0.12.19", default-features = false }
+ron = "0.10.1"
 rpkl = "0.4.2"
 rust_decimal = "1.37.1"
 semver = "1.0.26"

Cargo.toml

@@ -128,6 +128,7 @@ Schematic is powered entirely by [serde](https://serde.rs), and supports the fol
 
 - JSON - Uses `serde_json` and requires the `json` Cargo feature.
 - Pkl (experimental) - Uses `rpkl` and requires the `pkl` Cargo feature.
+- RON - Uses `ron` and requires the `ron` Cargo feature.
 - TOML - Uses `toml` and requires the `toml` Cargo feature.
 - YAML - Uses `serde_yml` and requires the `yml` Cargo feature.
 - YAML (deprecated) - Uses `serde_yaml` and requires the `yaml` Cargo feature.
@@ -141,6 +142,7 @@ The following Cargo features are available:
 - `extends` (default) - Enables configs to extend other configs.
 - `json` - Enables JSON.
 - `pkl` - Enables Pkl.
+- `ron` - Enables RON.
 - `toml` - Enables TOML.
 - `tracing` - Wrap generated code in tracing instrumentations.
 - `url` - Enables loading, extending, and parsing configs from URLs.

book/src/config/index.md

@@ -47,6 +47,9 @@ schemars = { version = "0.8.22", optional = true, default-features = false }
 # pkl
 rpkl = { workspace = true, optional = true }
 
+# ron
+ron = { workspace = true, optional = true }
+
 # toml
 toml = { workspace = true, optional = true }
 
@@ -77,6 +80,7 @@ validate = ["dep:garde", "schematic_macros/validate"]
 # Formats
 json = ["dep:serde_json", "schematic_types/serde_json"]
 pkl = ["dep:rpkl", "schematic_types/serde_rpkl"]
+ron = ["dep:ron", "schematic_types/serde_ron"]
 toml = ["dep:toml", "schematic_types/serde_toml"]
 yaml = ["dep:serde_yaml", "schematic_types/serde_yaml"]
 yml = ["dep:serde_yml", "schematic_types/serde_yml"]

crates/schematic/Cargo.toml

@@ -2,6 +2,8 @@
 mod json;
 #[cfg(feature = "pkl")]
 mod pkl;
+#[cfg(feature = "ron")]
+mod ron;
 #[cfg(feature = "toml")]
 mod toml;
 #[cfg(any(feature = "yaml", feature = "yml"))]
@@ -44,6 +46,9 @@ impl Format {
             #[cfg(feature = "pkl")]
             Format::Pkl => pkl::parse(location, content, file_path),
 
+            #[cfg(feature = "ron")]
+            Format::Ron => ron::parse(location, content),
+
             #[cfg(feature = "toml")]
             Format::Toml => toml::parse(location, content),
 

crates/schematic/src/config/formats/mod.rs

@@ -0,0 +1,25 @@
+use crate::config::error::ConfigError;
+use crate::config::parser::ParserError;
+use miette::NamedSource;
+use serde::de::DeserializeOwned;
+
+pub fn parse<D>(name: &str, content: &str) -> Result<D, ConfigError>
+where
+    D: DeserializeOwned,
+{
+    let result: D = ron::from_str(content).map_err(|error| {
+        // Extract position from error
+        let position = error.position;
+        let line = position.line;
+        let column = position.col;
+
+        ParserError {
+            content: NamedSource::new(name, content.to_owned()),
+            path: String::new(), // RON doesn't provide field path info
+            span: Some(super::create_span(content, line, column)),
+            message: error.code.to_string(),
+        }
+    })?;
+
+    Ok(result)
+}

crates/schematic/src/config/formats/ron.rs

@@ -18,6 +18,9 @@ pub enum Format {
     #[cfg(feature = "pkl")]
     Pkl,
 
+    #[cfg(feature = "ron")]
+    Ron,
+
     #[cfg(feature = "toml")]
     Toml,
 
@@ -49,6 +52,15 @@ impl Format {
             }
         }
 
+        #[cfg(feature = "ron")]
+        {
+            available.push("RON");
+
+            if value.ends_with(".ron") {
+                return Ok(Format::Ron);
+            }
+        }
+
         #[cfg(feature = "toml")]
         {
             available.push("TOML");
@@ -95,6 +107,17 @@ impl Format {
         }
     }
 
+    pub fn is_ron(&self) -> bool {
+        #[cfg(feature = "ron")]
+        {
+            matches!(self, Format::Ron)
+        }
+        #[cfg(not(feature = "ron"))]
+        {
+            false
+        }
+    }
+
     pub fn is_toml(&self) -> bool {
         #[cfg(feature = "toml")]
         {

crates/schematic/src/format.rs

@@ -13,6 +13,7 @@ indexmap = { workspace = true }
 regex = { workspace = true, optional = true }
 rust_decimal = { workspace = true, optional = true }
 relative-path = { workspace = true, optional = true }
+ron = { workspace = true, optional = true }
 url = { workspace = true, optional = true }
 rpkl = { workspace = true, optional = true }
 semver = { workspace = true, optional = true }
@@ -32,6 +33,7 @@ schematic_types = { path = ".", features = [
 	"semver",
 	"serde",
 	"serde_json",
+	"serde_ron",
 	"serde_rpkl",
 	"serde_toml",
 	"serde_yaml",
@@ -50,6 +52,7 @@ rust_decimal = ["dep:rust_decimal"]
 semver = ["dep:semver"]
 serde = ["dep:serde"]
 serde_json = ["dep:serde_json"]
+serde_ron = ["dep:ron"]
 serde_rpkl = ["dep:rpkl"]
 serde_toml = ["dep:toml"]
 serde_yaml = ["dep:serde_yaml"]