logics-rs: Test fixes and README.md update

Author: phorward

README.md

@@ -13,8 +13,11 @@
     <a href="https://www.npmjs.com/package/logics-js">
         <img alt="Badge showing current npm version of logics-js" title="logics-js" src="https://img.shields.io/npm/v/logics-js?label=logics-js">
     </a>
+    <a href="https://crates.io/crates/logics-rs">
+        <img alt="Badge showing current crates.io version of logics-rs" title="logics-rs", src="https://img.shields.io/crates/v/logics-rs">
+    </a>
     <br>
-    A multi-platform, sandboxed and extendable expression language with a Python-like syntax.
+    A sandboxed and extendable expression language with a Python-like syntax, running in Python, JavaScript and Rust* (*soon).
 </div>
 
 ## About
@@ -41,7 +44,7 @@ Since Logics is used on both the client and server side, the language was made a
 
 - [logics-js](https://www.npmjs.com/package/logics-js) is a pure (vanilla) JavaScript implementation of Logics provided as npm-package.
 - [logics-py](https://pypi.org/project/logics-py/) is a pure Python >= 3.10 implementation of Logics provided as PyPI-package.
-- [logics-rs](https://crates.io/crates/logics-rs) is a new Rust implementation of Logics provided via crates.io, under development.
+- [logics-rs](https://crates.io/crates/logics-rs) is a new Rust implementation of Logics provided via crates.io, **under development**.
 
 Both packages are stand-alone without any further dependencies. They are both under recent development and stable until a specific degree right now. They are maintained in separate version numbers, which is planned to be changed soon, when they become almost feature-complete.
 
@@ -64,6 +67,19 @@ logics = Logics("a + 2 * 3 + b")
 print(logics.run({"a": 1, "b": "-Logics"}))  # "7-Logics"
 ```
 
+Using Logics in Rust (currently supports only Value abstraction):
+```rust
+// cargo install logics-rs
+
+use logics_rs::Value;
+
+fn main() {
+    // Currently, only the Value-object abstraction is available.
+    let v = Value::String("7-Logics".to_string());
+    println!("{}", v.to_string());  // "7-Logics"
+}
+```
+
 ## Features
 
 - Secure, native, running in a sandboxed environment apart from the host language

logics-rs/Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "logics-rs"
-version = "0.1.1"
+version = "0.1.2"
 edition = "2024"
 description = "Logics is a user-friendly formula language with a subset of Python's expression syntax"
 authors = [
@@ -16,3 +16,4 @@ categories = [
 readme = "../README.md"
 
 [dependencies]
+num-parse = "0.1"

logics-rs/Cargo.toml

@@ -1,7 +1,8 @@
 use std::collections::HashMap;
+use num_parse::parse_int;
 
 #[derive(Debug)]
-enum Value {
+pub enum Value {
     None,
     Bool(bool),
     Int(i64),
@@ -37,7 +38,7 @@ impl Value {
             Self::Int(i) => *i,
             Self::Float(f) => *f as i64,
             Self::String(s) => {
-                if let Ok(i) = s.parse::<i64>() {
+                if let Some(i) = parse_int::<i64>(s) {
                     i
                 } else {
                     0
@@ -224,5 +225,5 @@ fn test_string() {
     assert_eq!(s.to_i64(), 3i64);
     assert_eq!(s.to_f64(), 3.1415f64);
     assert_eq!(s.to_string(), "3.1415");
-    assert_eq!(s.repr(), "3.1415");
+    assert_eq!(s.repr(), "\"3.1415\"");
 }