test(lib): fix lib example

Cargo.lock

@@ -48,12 +48,12 @@ version = "0.1.0"
 dependencies = [
  "claims",
  "merge",
- "proc-macro-error",
+ "proc-macro-error2",
  "proc-macro2",
  "quote",
  "serde",
  "serde_json",
- "syn 2.0.104",
+ "syn",
  "tempfile",
 ]
 
@@ -112,7 +112,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.104",
+ "syn",
 ]
 
 [[package]]
@@ -130,30 +130,6 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
-[[package]]
-name = "proc-macro-error"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
-dependencies = [
- "proc-macro-error-attr",
- "proc-macro2",
- "quote",
- "syn 1.0.109",
- "version_check",
-]
-
-[[package]]
-name = "proc-macro-error-attr"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
-dependencies = [
- "proc-macro2",
- "quote",
- "version_check",
-]
-
 [[package]]
 name = "proc-macro-error-attr2"
 version = "2.0.0"
@@ -173,7 +149,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn 2.0.104",
+ "syn",
 ]
 
 [[package]]
@@ -236,7 +212,7 @@ checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.104",
+ "syn",
 ]
 
 [[package]]
@@ -251,16 +227,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.104"
@@ -291,12 +257,6 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
 
-[[package]]
-name = "version_check"
-version = "0.9.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
-
 [[package]]
 name = "wasi"
 version = "0.14.2+wasi-0.2.4"

Cargo.toml

@@ -8,14 +8,7 @@ repository = "https://github.com/kristoferssolo/filecaster"
 documentation = "https://docs.rs/filecaster"
 homepage = "https://github.com/kristoferssolo/filecaster"
 license = "MIT OR Apache-2.0"
-keywords = [
+keywords = ["proc-macro", "derive", "configuration", "file-parsing"]
-  "proc-macro",
-  "derive",
-  "configuration",
-  "file-parsing",
-  "defaults",
-  "merge",
-]
 categories = ["development-tools::procedural-macro", "parsing", "config"]
 exclude = ["/.github", "/.gitignore", "/tests", "*.png", "*.md"]
 readme = "README.md"
@@ -27,7 +20,7 @@ merge = ["dep:merge"]
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1.0"
-proc-macro-error = "1.0"
+proc-macro-error2 = "2.0"
 syn = { version = "2.0", features = ["extra-traits", "parsing"] }
 serde = { version = "1.0", features = ["derive"] }
 merge = { version = "0.2", optional = true }

src/lib.rs

@@ -31,10 +31,9 @@
 //! Example:
 //!
 //! ```rust
-//! use from_file::FromFile;
+//! use filecaster::FromFile;
 //!
 //! #[derive(Debug, Clone, FromFile)]
-//! #[serde(default)]
 //! struct AppConfig {
 //!     /// If the user does not specify a host, use `"127.0.0.1"`.
 //!     #[from_file(default = "127.0.0.1")]
@@ -48,9 +47,15 @@
 //!     auto_reload: bool,  // requires `bool: Default`
 //! }
 //!
+//! let file_content = r#"
+//!     {
+//!         "host": "localhost"
+//!     }
+//! "#;
+//!
+//! let config_from_file = serde_json::from_str::<AppConfigFile>(file_content).unwrap();
 //! // After deserializing the partial config from disk (e.g. with Serde):
-//! let file: Option<AppConfigFile> = serde_yaml::from_str(yaml_text).ok();
+//! let cfg = AppConfig::from_file(Some(config_from_file));
-//! let cfg: AppConfig = AppConfig::from_file(file);
 //! println!("{cfg:#?}");
 //! ```
 //!
@@ -75,7 +80,7 @@ mod from_file;
 
 pub(crate) use from_file::impl_from_file;
 use proc_macro::TokenStream;
-use proc_macro_error::proc_macro_error;
+use proc_macro_error2::proc_macro_error;
 use syn::{DeriveInput, parse_macro_input};
 
 /// Implements the `FromFile` derive macro.