chore: cleanup unused imports

Cargo.lock

@@ -4,4 +4,4 @@ version = 3
 
 [[package]]
 name = "estring"
-version = "0.2.1"
+version = "0.3.0"

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "estring"
 description = "A simple way to parse a string using type annotations"
-version = "0.2.1"
+version = "0.3.0"
 edition = "2021"
 authors = ["Dmitriy Pleshevskiy <dmitriy@ideascup.me>"]
 readme = "README.md"

README.md

@@ -7,7 +7,7 @@
 
 ```toml
 [dependencies]
-estring = "0.2"
+estring = "0.3"
 ```
 
 A simple way to parse a string using type annotations.
@@ -24,6 +24,23 @@ For more details, see [examples].
 
 ## Usage
 
+Basic
+
+```rust
+use estring::EString;
+
+fn main() -> estring::Result<()> {
+    let res: i32 = EString::from("10").parse()?;
+    assert_eq!(res, 10);
+    Ok(())
+}
+```
+
+You can use predefined structs like `SepVec` if you enable the `structs`
+feature.
+
+Note: You can use custom types as annotations! Just implement `ParseFragment`!
+
 ```rust
 use estring::{SepVec, EString};
 
@@ -42,8 +59,23 @@ fn main() -> estring::Result<()> {
 }
 ```
 
-You can use custom types as annotations! Just implement
-`estring::ParseFragment`!
+You can also use predefined aggregators if you enable the `aggs` feature.
+
+```rust
+use estring::{Aggregate, EString, Product, SepVec, Sum};
+
+type PlusVec<T> = SepVec<T, '+'>;
+type MulVec<T> = SepVec<T, '*'>;
+
+fn main() -> estring::Result<()> {
+    let res = EString::from("10+5*2+3")
+        .parse::<Sum<PlusVec<Product<MulVec<f32>>>>>()?
+        .agg();
+
+    assert_eq!(res, 23.0);
+    Ok(())
+}
+```
 
 ## Contact Us
 

src/core.rs

@@ -240,6 +240,7 @@ impl ParseFragment for EString {
     }
 }
 
+#[cfg(feature = "aggs")]
 impl Aggregatable for EString {
     type Item = Self;
 
@@ -263,6 +264,7 @@ impl ToEString for String {
     }
 }
 
+#[cfg(feature = "aggs")]
 impl Aggregatable for String {
     type Item = Self;
 
@@ -286,6 +288,7 @@ impl<'a> ToEString for &'a str {
     }
 }
 
+#[cfg(feature = "aggs")]
 impl<'a> Aggregatable for &'a str {
     type Item = Self;
 

src/lib.rs

@@ -7,7 +7,23 @@
 //!
 //! [enve]: https://github.com/pleshevskiy/enve
 //!
-//! ## Getting started
+//! ## Usage
+//!
+//! Basic
+//!
+//! ```rust
+//! use estring::EString;
+//!
+//! fn main() -> estring::Result<()> {
+//!     let res: i32 = EString::from("10").parse()?;
+//!     assert_eq!(res, 10);
+//!     Ok(())
+//! }
+//! ```
+//!
+//! You can use predefined structs like ``SepVec`` if you enable `structs` feature.
+//!
+//! Note: You can use custom types as annotations! Just implement ``ParseFragment``!
 //!
 //! ```rust
 //! use estring::{SepVec, EString};
@@ -27,6 +43,30 @@
 //! }
 //! ```
 //!
+//! You can also use predefined aggregators if you enable `aggs` feature.
+//!
+//! ```rust
+//! use estring::{Aggregate, EString, Product, SepVec, Sum};
+//!
+//! type PlusVec<T> = SepVec<T, '+'>;
+//! type MulVec<T> = SepVec<T, '*'>;
+//!
+//! fn main() -> estring::Result<()> {
+//!     let res = EString::from("10+5*2+3")
+//!         .parse::<Sum<PlusVec<Product<MulVec<f32>>>>>()?
+//!         .agg();
+//!
+//!     assert_eq!(res, 23.0);
+//!     Ok(())
+//! }
+//! ```
+//!
+//! ---
+//!
+//! For more details, see [examples].
+//!
+//! [examples]: https://github.com/pleshevskiy/estring/tree/main/examples
+//!
 #![deny(clippy::pedantic)]
 #![allow(clippy::module_name_repetitions)]
 #![warn(missing_docs)]

src/std/bool.rs

@@ -1,4 +1,4 @@
-use crate::core::{Aggregatable, EString, ParseFragment, ToEString};
+use crate::core::{EString, ParseFragment, ToEString};
 use crate::error::{Error, Reason};
 
 impl ParseFragment for bool {
@@ -19,7 +19,8 @@ impl ToEString for bool {
     }
 }
 
-impl Aggregatable for bool {
+#[cfg(feature = "aggs")]
+impl crate::core::Aggregatable for bool {
     type Item = Self;
 
     #[inline]

src/std/number.rs

@@ -1,4 +1,4 @@
-use crate::core::{Aggregatable, EString, ParseFragment, ToEString};
+use crate::core::{EString, ParseFragment, ToEString};
 use crate::error::{Error, Reason};
 
 #[doc(hidden)]
@@ -19,7 +19,8 @@ macro_rules! from_env_string_numbers_impl {
                 }
             }
 
-            impl Aggregatable for $ty {
+            #[cfg(feature = "aggs")]
+            impl crate::core::Aggregatable for $ty {
                 type Item = Self;
 
                 #[inline]

src/std/option.rs

@@ -1,4 +1,4 @@
-use crate::core::{Aggregatable, EString, ParseFragment, ToEString};
+use crate::core::{EString, ParseFragment, ToEString};
 
 impl<T> ToEString for Option<T>
 where
@@ -25,9 +25,10 @@ where
     }
 }
 
-impl<T> Aggregatable for Option<T>
+#[cfg(feature = "aggs")]
+impl<T> crate::core::Aggregatable for Option<T>
 where
-    T: Aggregatable,
+    T: crate::core::Aggregatable,
 {
     type Item = T::Item;
 

src/structs/pair.rs

@@ -118,7 +118,7 @@ hello=bar",
     #[test]
     fn should_format_pair() {
         let pair = Pair::<_, '+', _>(1, 2);
-        assert_eq!(pair.clone().to_estring(), EString(String::from("1+2")));
+        assert_eq!(pair.to_estring(), EString(String::from("1+2")));
         let pair_in_pair = Pair::<_, '=', _>(3, pair);
         assert_eq!(pair_in_pair.to_estring(), EString(String::from("3=1+2")));
     }

src/structs/sep_vec.rs

@@ -1,7 +1,7 @@
 //! Contains the implementations to vec type
 //!
 
-use crate::core::{Aggregatable, EString, ParseFragment, ToEString};
+use crate::core::{EString, ParseFragment, ToEString};
 use std::fmt::Write;
 
 /// Wrapper for ``Vec`` to split string by a separator (`SEP`).
@@ -92,9 +92,10 @@ where
     }
 }
 
-impl<T, const SEP: char> Aggregatable for SepVec<T, SEP>
+#[cfg(feature = "aggs")]
+impl<T, const SEP: char> crate::core::Aggregatable for SepVec<T, SEP>
 where
-    T: Aggregatable,
+    T: crate::core::Aggregatable,
 {
     type Item = T::Item;
 
@@ -106,6 +107,7 @@ where
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::Aggregatable;
     use crate::Pair;
     use crate::{Error, Reason};