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use std::collections::HashMap;
use crate::{accessor::{AccessType, Accessor}, object::ConfigObjectAccessError};
#[derive(Debug, PartialEq, serde::Deserialize)]
#[serde(untagged)]
pub enum ConfigElement<'a> {
Null,
Bool(bool),
I8(i8),
I16(i16),
I32(i32),
I64(i64),
U8(u8),
U16(u16),
U32(u32),
U64(u64),
F32(f32),
F64(f64),
Str(&'a str),
List(Vec<ConfigElement<'a>>),
Map(HashMap<&'a str, ConfigElement<'a>>),
}
impl<'a> ConfigElement<'a> {
pub(crate) fn get(&self, accessor: &mut Accessor) -> Result<Option<&ConfigElement<'a>>, ConfigObjectAccessError> {
match (accessor.current(), &self) {
(Some(AccessType::Key(k)), ConfigElement::Null) => {
Err(ConfigObjectAccessError::AccessWithKeyOnNull(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::Bool(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnBool(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::I8(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnI8(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::I16(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnI16(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::I32(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnI32(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::I64(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnI64(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::U8(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnU8(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::U16(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnU16(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::U32(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnU32(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::U64(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnU64(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::F32(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnF32(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::F64(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnF64(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::Str(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnStr(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::List(_)) => {
Err(ConfigObjectAccessError::AccessWithKeyOnList(k.to_string()))
}
(Some(AccessType::Key(k)), ConfigElement::Map(hm)) => Ok(hm.get(k.as_str())),
(Some(AccessType::Index(u)), ConfigElement::Null) => {
Err(ConfigObjectAccessError::AccessWithIndexOnNull(*u))
}
(Some(AccessType::Index(u)), ConfigElement::Bool(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnBool(*u))
}
(Some(AccessType::Index(u)), ConfigElement::I8(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnI8(*u))
}
(Some(AccessType::Index(u)), ConfigElement::I16(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnI16(*u))
}
(Some(AccessType::Index(u)), ConfigElement::I32(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnI32(*u))
}
(Some(AccessType::Index(u)), ConfigElement::I64(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnI64(*u))
}
(Some(AccessType::Index(u)), ConfigElement::U8(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnU8(*u))
}
(Some(AccessType::Index(u)), ConfigElement::U16(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnU16(*u))
}
(Some(AccessType::Index(u)), ConfigElement::U32(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnU32(*u))
}
(Some(AccessType::Index(u)), ConfigElement::U64(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnU64(*u))
}
(Some(AccessType::Index(u)), ConfigElement::F32(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnF32(*u))
}
(Some(AccessType::Index(u)), ConfigElement::F64(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnF64(*u))
}
(Some(AccessType::Index(u)), ConfigElement::Str(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnStr(*u))
}
(Some(AccessType::Index(u)), ConfigElement::List(v)) => Ok(v.get(*u)),
(Some(AccessType::Index(u)), ConfigElement::Map(_)) => {
Err(ConfigObjectAccessError::AccessWithIndexOnMap(*u))
}
(None, _) => Err(ConfigObjectAccessError::NoAccessor),
}
}
}
pub trait AsConfigElement {
type Error: std::error::Error;
fn as_config_element<'a>(&'a self) -> Result<ConfigElement<'a>, Self::Error>;
}
#[cfg(feature = "json")]
pub mod json;
#[cfg(feature = "toml")]
pub mod toml;
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