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use crate::keymap::{default::default, merge_keys, Keymap};
use helix_view::document::Mode;
use serde::Deserialize;
use std::collections::HashMap;
use std::fmt::Display;
use std::io::Error as IOError;
use std::path::PathBuf;
use toml::de::Error as TomlError;
#[derive(Debug, Clone, PartialEq, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct Config {
pub theme: Option<String>,
#[serde(default)]
pub lsp: LspConfig,
#[serde(default = "default")]
pub keys: HashMap<Mode, Keymap>,
#[serde(default)]
pub editor: helix_view::editor::Config,
}
impl Default for Config {
fn default() -> Config {
Config {
theme: None,
lsp: LspConfig::default(),
keys: default(),
editor: helix_view::editor::Config::default(),
}
}
}
#[derive(Debug)]
pub enum ConfigLoadError {
BadConfig(TomlError),
Error(IOError),
}
impl Display for ConfigLoadError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
ConfigLoadError::BadConfig(err) => err.fmt(f),
ConfigLoadError::Error(err) => err.fmt(f),
}
}
}
#[derive(Debug, Default, Clone, PartialEq, Deserialize)]
#[serde(rename_all = "kebab-case", deny_unknown_fields)]
pub struct LspConfig {
pub display_messages: bool,
}
impl Config {
pub fn load(config_path: PathBuf) -> Result<Config, ConfigLoadError> {
match std::fs::read_to_string(config_path) {
Ok(config) => toml::from_str(&config)
.map(merge_keys)
.map_err(ConfigLoadError::BadConfig),
Err(err) => Err(ConfigLoadError::Error(err)),
}
}
pub fn load_default() -> Result<Config, ConfigLoadError> {
Config::load(helix_loader::config_file())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn parsing_keymaps_config_file() {
use crate::keymap;
use crate::keymap::Keymap;
use helix_core::hashmap;
use helix_view::document::Mode;
let sample_keymaps = r#"
[keys.insert]
y = "move_line_down"
S-C-a = "delete_selection"
[keys.normal]
A-F12 = "move_next_word_end"
"#;
assert_eq!(
toml::from_str::<Config>(sample_keymaps).unwrap(),
Config {
keys: hashmap! {
Mode::Insert => Keymap::new(keymap!({ "Insert mode"
"y" => move_line_down,
"S-C-a" => delete_selection,
})),
Mode::Normal => Keymap::new(keymap!({ "Normal mode"
"A-F12" => move_next_word_end,
})),
},
..Default::default()
}
);
}
#[test]
fn keys_resolve_to_correct_defaults() {
// From serde default
let default_keys = toml::from_str::<Config>("").unwrap().keys;
assert_eq!(default_keys, default());
// From the Default trait
let default_keys = Config::default().keys;
assert_eq!(default_keys, default());
}
}
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