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// If no features are used, there is an "unused mut" warning in `ALL_EXTENSIONS`
// BUG: ? For some reason this doesn't do anything if I try and function scope this
#![allow(unused_mut)]
use source::Source;
use std::collections::HashMap;
use std::error::Error;
use value::Value;
#[cfg(feature = "toml")]
mod toml;
#[cfg(feature = "json")]
mod json;
#[cfg(feature = "yaml")]
mod yaml;
#[cfg(feature = "hjson")]
mod hjson;
#[cfg(feature = "ini")]
mod ini;
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum FileFormat {
/// TOML (parsed with toml)
#[cfg(feature = "toml")]
Toml,
/// JSON (parsed with serde_json)
#[cfg(feature = "json")]
Json,
/// YAML (parsed with yaml_rust)
#[cfg(feature = "yaml")]
Yaml,
/// HJSON (parsed with serde_hjson)
#[cfg(feature = "hjson")]
Hjson,
/// INI (parsed with rust_ini)
#[cfg(feature = "ini")]
Ini,
}
lazy_static! {
#[doc(hidden)]
// #[allow(unused_mut)] ?
pub static ref ALL_EXTENSIONS: HashMap<FileFormat, Vec<&'static str>> = {
let mut formats: HashMap<FileFormat, Vec<_>> = HashMap::new();
#[cfg(feature = "toml")]
formats.insert(FileFormat::Toml, vec!["toml"]);
#[cfg(feature = "json")]
formats.insert(FileFormat::Json, vec!["json"]);
#[cfg(feature = "yaml")]
formats.insert(FileFormat::Yaml, vec!["yaml", "yml"]);
#[cfg(feature = "hjson")]
formats.insert(FileFormat::Hjson, vec!["hjson"]);
#[cfg(feature = "ini")]
formats.insert(FileFormat::Ini, vec!["ini"]);
formats
};
}
impl FileFormat {
// TODO: pub(crate)
#[doc(hidden)]
pub fn extensions(&self) -> &'static Vec<&'static str> {
// It should not be possible for this to fail
// A FileFormat would need to be declared without being added to the
// ALL_EXTENSIONS map.
ALL_EXTENSIONS.get(self).unwrap()
}
// TODO: pub(crate)
#[doc(hidden)]
#[allow(unused_variables)]
pub fn parse(
&self,
uri: Option<&String>,
text: &str,
) -> Result<HashMap<String, Value>, Box<Error + Send + Sync>> {
match *self {
#[cfg(feature = "toml")]
FileFormat::Toml => toml::parse(uri, text),
#[cfg(feature = "json")]
FileFormat::Json => json::parse(uri, text),
#[cfg(feature = "yaml")]
FileFormat::Yaml => yaml::parse(uri, text),
#[cfg(feature = "hjson")]
FileFormat::Hjson => hjson::parse(uri, text),
#[cfg(feature = "ini")]
FileFormat::Ini => ini::parse(uri, text),
}
}
}
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