Make serde optional

.travis.yml

@@ -2,7 +2,7 @@ language: rust
 rust: stable
 sudo: false
 script:
-  - cargo test --all --features "toml yaml json"
+  - cargo test --all --features "toml_config yaml_config json_config"
   - cargo build
   # No idea how to fix this, since we don't depend on futures-preview directly.
   # - rustdoc --test README.md --extern irc=target/debug/libirc.rlib -L target/debug/deps --edition 2018

Cargo.toml

@@ -20,11 +20,16 @@ is-it-maintained-open-issues = { repository = "aatxe/irc" }
 members = [ "./", "irc-proto" ]
 
 [features]
-default = ["ctcp", "toml"]
+default = ["ctcp", "toml_config"]
 ctcp = []
 nochanlists = []
-json = ["serde_json"]
+json_config = ["serde", "serde_derive", "serde_json"]
-yaml = ["serde_yaml"]
+toml_config = ["serde", "serde_derive", "toml"]
+yaml_config = ["serde", "serde_derive", "serde_yaml"]
+
+# Temporary transitionary features
+json = ["json_config"]
+yaml = ["yaml_config"]
 
 [dependencies]
 thiserror = "1.0.2"
@@ -35,8 +40,8 @@ encoding = "0.2"
 irc-proto = { version = "*", path = "irc-proto" }
 log = "0.4"
 native-tls = "0.2"
-serde = { version = "1.0", features = ["derive"] }
+serde = { version = "1.0", features = ["derive"], optional = true }
-serde_derive = "1.0"
+serde_derive = { version = "1.0", optional = true }
 tokio = { version = "0.2.4", features = ["time", "net", "stream", "macros", "stream"] }
 tokio-util = { version = "0.2.0", features = ["codec"] }
 tokio-tls = "0.3.0"

README.md

@@ -86,9 +86,9 @@ programmatic configuration. Runtime loading is done via the function `Config::lo
 sufficient for most IRC bots. Programmatic configuration is convenient for writing tests, but can
 also be useful when defining your own custom configuration format that can be converted to `Config`.
 The primary configuration format is TOML, but if you are so inclined, you can use JSON and/or YAML
-via the optional `json` and `yaml` features respectively. At the minimum, a configuration requires
+via the optional `json_config` and `yaml_config` features respectively. At the minimum, a configuration
-`nickname` and `server` to be defined, and all other fields are optional. You can find detailed
+requires `nickname` and `server` to be defined, and all other fields are optional. You can find
-explanations of the various fields on [docs.rs][config-fields].
+detailed explanations of the various fields on [docs.rs][config-fields].
 
 [config-fields]: https://docs.rs/irc/*/irc/client/data/config/struct.Config.html#fields
 

src/client/data/config.rs

@@ -1,4 +1,5 @@
 //! JSON configuration files using serde
+#[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 use std::{
     collections::HashMap,
@@ -8,15 +9,15 @@ use std::{
 };
 use tokio::net::ToSocketAddrs;
 
-#[cfg(feature = "json")]
+#[cfg(feature = "json_config")]
 use serde_json;
-#[cfg(feature = "yaml")]
+#[cfg(feature = "yaml_config")]
 use serde_yaml;
-#[cfg(feature = "toml")]
+#[cfg(feature = "toml_config")]
 use toml;
 
 use crate::error::Error::InvalidConfig;
-#[cfg(feature = "toml")]
+#[cfg(feature = "toml_config")]
 use crate::error::TomlError;
 use crate::error::{ConfigError, Result};
 
@@ -65,127 +66,129 @@ use crate::error::{ConfigError, Result};
 /// let config = Config::load("config.toml").unwrap();
 /// # }
 /// ```
-#[derive(Clone, Deserialize, Serialize, Default, PartialEq, Debug)]
+#[derive(Clone, Default, PartialEq, Debug)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Config {
     /// A list of the owners of the client by nickname (for bots).
-    #[serde(skip_serializing_if = "Vec::is_empty")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Vec::is_empty"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub owners: Vec<String>,
     /// The client's nickname.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub nickname: Option<String>,
     /// The client's NICKSERV password.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub nick_password: Option<String>,
     /// Alternative nicknames for the client, if the default is taken.
-    #[serde(skip_serializing_if = "Vec::is_empty")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Vec::is_empty"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub alt_nicks: Vec<String>,
     /// The client's username.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub username: Option<String>,
     /// The client's real name.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub realname: Option<String>,
     /// The server to connect to.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub server: Option<String>,
     /// The port to connect on.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub port: Option<u16>,
     /// The password to connect to the server.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub password: Option<String>,
     /// Whether or not to use SSL.
     /// Clients will automatically panic if this is enabled without SSL support.
-    #[serde(skip_serializing_if = "is_false")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "is_false"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub use_ssl: bool,
     /// The path to the SSL certificate for this server in DER format.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub cert_path: Option<String>,
     /// The path to a SSL certificate to use for CertFP client authentication in DER format.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub client_cert_path: Option<String>,
     /// The password for the certificate to use in CertFP authentication.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub client_cert_pass: Option<String>,
     /// The encoding type used for this connection.
     /// This is typically UTF-8, but could be something else.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub encoding: Option<String>,
     /// A list of channels to join on connection.
-    #[serde(skip_serializing_if = "Vec::is_empty")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Vec::is_empty"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub channels: Vec<String>,
     /// User modes to set on connect. Example: "+RB -x"
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub umodes: Option<String>,
     /// The text that'll be sent in response to CTCP USERINFO requests.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub user_info: Option<String>,
     /// The text that'll be sent in response to CTCP VERSION requests.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub version: Option<String>,
     /// The text that'll be sent in response to CTCP SOURCE requests.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub source: Option<String>,
     /// The amount of inactivity in seconds before the client will ping the server.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub ping_time: Option<u32>,
     /// The amount of time in seconds for a client to reconnect due to no ping response.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub ping_timeout: Option<u32>,
     /// The length in seconds of a rolling window for message throttling. If more than
     /// `max_messages_in_burst` messages are sent within `burst_window_length` seconds, additional
     /// messages will be delayed automatically as appropriate. In particular, in the past
     /// `burst_window_length` seconds, there will never be more than `max_messages_in_burst` messages
     /// sent.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub burst_window_length: Option<u32>,
     /// The maximum number of messages that can be sent in a burst window before they'll be delayed.
     /// Messages are automatically delayed as appropriate.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub max_messages_in_burst: Option<u32>,
     /// Whether the client should use NickServ GHOST to reclaim its primary nickname if it is in
     /// use. This has no effect if `nick_password` is not set.
-    #[serde(skip_serializing_if = "is_false")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "is_false"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub should_ghost: bool,
     /// The command(s) that should be sent to NickServ to recover a nickname. The nickname and
     /// password will be appended in that order after the command.
     /// E.g. `["RECOVER", "RELEASE"]` means `RECOVER nick pass` and `RELEASE nick pass` will be sent
     /// in that order.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub ghost_sequence: Option<Vec<String>>,
     /// Whether or not to use a fake connection for testing purposes. You probably will never want
     /// to enable this, but it is used in unit testing for the `irc` crate.
-    #[serde(skip_serializing_if = "is_false")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "is_false"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub use_mock_connection: bool,
     /// The initial value used by the fake connection for testing. You probably will never need to
     /// set this, but it is used in unit testing for the `irc` crate.
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "Option::is_none"))]
     pub mock_initial_value: Option<String>,
 
     /// A mapping of channel names to keys for join-on-connect.
-    #[serde(skip_serializing_if = "HashMap::is_empty")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "HashMap::is_empty"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub channel_keys: HashMap<String, String>,
     /// A map of additional options to be stored in config.
-    #[serde(skip_serializing_if = "HashMap::is_empty")]
+    #[cfg_attr(feature = "serde", serde(skip_serializing_if = "HashMap::is_empty"))]
-    #[serde(default)]
+    #[cfg_attr(feature = "serde", serde(default))]
     pub options: HashMap<String, String>,
 
     /// The path that this configuration was loaded from.
     ///
     /// This should not be specified in any configuration. It will automatically be handled by the library.
-    #[serde(skip_serializing)]
+    #[cfg_attr(feature = "serde", serde(skip_serializing))]
     #[doc(hidden)]
     pub path: Option<PathBuf>,
 }
 
+#[cfg(feature = "serde")]
 fn is_false(v: &bool) -> bool {
     !v
 }
@@ -230,7 +233,7 @@ impl Config {
         res.map(|config| config.with_path(path))
     }
 
-    #[cfg(feature = "json")]
+    #[cfg(feature = "json_config")]
     fn load_json<P: AsRef<Path>>(path: P, data: &str) -> Result<Config> {
         serde_json::from_str(data).map_err(|e| InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -238,7 +241,7 @@ impl Config {
         })
     }
 
-    #[cfg(not(feature = "json"))]
+    #[cfg(not(feature = "json_config"))]
     fn load_json<P: AsRef<Path>>(path: P, _: &str) -> Result<Config> {
         Err(InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -246,7 +249,7 @@ impl Config {
         })
     }
 
-    #[cfg(feature = "toml")]
+    #[cfg(feature = "toml_config")]
     fn load_toml<P: AsRef<Path>>(path: P, data: &str) -> Result<Config> {
         toml::from_str(data).map_err(|e| InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -254,7 +257,7 @@ impl Config {
         })
     }
 
-    #[cfg(not(feature = "toml"))]
+    #[cfg(not(feature = "toml_config"))]
     fn load_toml<P: AsRef<Path>>(path: P, _: &str) -> Result<Config> {
         Err(InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -262,7 +265,7 @@ impl Config {
         })
     }
 
-    #[cfg(feature = "yaml")]
+    #[cfg(feature = "yaml_config")]
     fn load_yaml<P: AsRef<Path>>(path: P, data: &str) -> Result<Config> {
         serde_yaml::from_str(data).map_err(|e| InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -270,7 +273,7 @@ impl Config {
         })
     }
 
-    #[cfg(not(feature = "yaml"))]
+    #[cfg(not(feature = "yaml_config"))]
     fn load_yaml<P: AsRef<Path>>(path: P, _: &str) -> Result<Config> {
         Err(InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -308,7 +311,7 @@ impl Config {
         Ok(())
     }
 
-    #[cfg(feature = "json")]
+    #[cfg(feature = "json_config")]
     fn save_json<P: AsRef<Path>>(&self, path: &P) -> Result<String> {
         serde_json::to_string(self).map_err(|e| InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -316,7 +319,7 @@ impl Config {
         })
     }
 
-    #[cfg(not(feature = "json"))]
+    #[cfg(not(feature = "json_config"))]
     fn save_json<P: AsRef<Path>>(&self, path: &P) -> Result<String> {
         Err(InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -324,7 +327,7 @@ impl Config {
         })
     }
 
-    #[cfg(feature = "toml")]
+    #[cfg(feature = "toml_config")]
     fn save_toml<P: AsRef<Path>>(&self, path: &P) -> Result<String> {
         toml::to_string(self).map_err(|e| InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -332,7 +335,7 @@ impl Config {
         })
     }
 
-    #[cfg(not(feature = "toml"))]
+    #[cfg(not(feature = "toml_config"))]
     fn save_toml<P: AsRef<Path>>(&self, path: &P) -> Result<String> {
         Err(InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -340,7 +343,7 @@ impl Config {
         })
     }
 
-    #[cfg(feature = "yaml")]
+    #[cfg(feature = "yaml_config")]
     fn save_yaml<P: AsRef<Path>>(&self, path: &P) -> Result<String> {
         serde_yaml::to_string(self).map_err(|e| InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -348,7 +351,7 @@ impl Config {
         })
     }
 
-    #[cfg(not(feature = "yaml"))]
+    #[cfg(not(feature = "yaml_config"))]
     fn save_yaml<P: AsRef<Path>>(&self, path: &P) -> Result<String> {
         Err(InvalidConfig {
             path: path.as_ref().to_string_lossy().into_owned(),
@@ -561,8 +564,7 @@ impl Config {
 
 #[cfg(test)]
 mod test {
-    use super::Config;
+    use super::{Config, Result};
-    use anyhow::Result;
     use std::collections::HashMap;
 
     #[allow(unused)]
@@ -609,7 +611,7 @@ mod test {
     }
 
     #[test]
-    #[cfg(feature = "json")]
+    #[cfg(feature = "json_config")]
     fn load_from_json() -> Result<()> {
         const DATA: &str = include_str!("client_config.json");
         assert_eq!(
@@ -620,7 +622,7 @@ mod test {
     }
 
     #[test]
-    #[cfg(feature = "toml")]
+    #[cfg(feature = "toml_config")]
     fn load_from_toml() -> Result<()> {
         const DATA: &str = include_str!("client_config.toml");
         assert_eq!(
@@ -631,7 +633,7 @@ mod test {
     }
 
     #[test]
-    #[cfg(feature = "yaml")]
+    #[cfg(feature = "yaml_config")]
     fn load_from_yaml() -> Result<()> {
         const DATA: &str = include_str!("client_config.yaml");
         assert_eq!(

src/error.rs

@@ -94,17 +94,17 @@ pub enum Error {
 #[derive(Debug, Error)]
 pub enum ConfigError {
     /// Failed to parse as TOML.
-    #[cfg(feature = "toml")]
+    #[cfg(feature = "toml_config")]
     #[error("invalid toml")]
     InvalidToml(#[source] TomlError),
 
     /// Failed to parse as JSON.
-    #[cfg(feature = "json")]
+    #[cfg(feature = "json_config")]
     #[error("invalid json")]
     InvalidJson(#[source] serde_json::Error),
 
     /// Failed to parse as YAML.
-    #[cfg(feature = "yaml")]
+    #[cfg(feature = "yaml_config")]
     #[error("invalid yaml")]
     InvalidYaml(#[source] serde_yaml::Error),
 
@@ -136,7 +136,7 @@ pub enum ConfigError {
 }
 
 /// A wrapper that combines toml's serialization and deserialization errors.
-#[cfg(feature = "toml")]
+#[cfg(feature = "toml_config")]
 #[derive(Debug, Error)]
 pub enum TomlError {
     /// A TOML deserialization error.