add rust cxx sample

bindings/rust/cxx-sample/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "cxx-sample"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cxx = "1.0"
+
+[build-dependencies]
+cxx-build = "1.0"

bindings/rust/cxx-sample/build.rs

@@ -0,0 +1,10 @@
+fn main() {
+    cxx_build::bridge("src/main.rs")
+        .file("src/math-utils.cc")
+        .std("c++14")
+        .compile("cxxbridge-core");
+
+    println!("cargo:rerun-if-changed=src/main.rs");
+    println!("cargo:rerun-if-changed=src/math-utils.cc");
+    println!("cargo:rerun-if-changed=include/math-utils.h");
+}

bindings/rust/cxx-sample/include/math-utils.h

@@ -0,0 +1,80 @@
+// The MIT License
+//
+// Copyright (c) 2024 MGTheTrain
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+#define M_PI 3.141
+extern "C" {
+#endif
+
+/**
+ * @brief Adds two integers.
+ * @param a The first integer.
+ * @param b The second integer.
+ * @return The sum of a and b.
+ */
+int32_t add(int32_t a, int32_t b);
+
+/**
+ * @brief Subtracts one integer from another.
+ * @param a The integer to subtract from.
+ * @param b The integer to subtract.
+ * @return The result of subtracting b from a.
+ */
+int32_t subtract(int32_t a, int32_t b);
+
+/**
+ * @brief Multiplies two integers.
+ * @param a The first integer.
+ * @param b The second integer.
+ * @return The product of a and b.
+ */
+int32_t multiply(int32_t a, int32_t b);
+
+/**
+ * @brief Divides one float by another.
+ * @param a The float to divide.
+ * @param b The divisor.
+ * @return The result of dividing a by b.
+ * @throw Division by zero error if b is zero.
+ */
+float divide(float a, float b);
+
+/**
+ * @brief Calculates the area of the circle.
+ * @param radius The radius of the circle.
+ * @return The area of the circle.
+ */
+float getCircleArea(float radius);
+
+/**
+ * @brief Calculates the circumference of the circle.
+ * @param radius The radius of the circle
+ * @return The circumference of the circle.
+ */
+float getCircleCircumference(float radius);
+#ifdef __cplusplus
+}
+#endif

bindings/rust/cxx-sample/src/main.rs

@@ -0,0 +1,48 @@
+use cxx::ExternType;
+
+#[cxx::bridge]
+mod ffi {
+    unsafe extern "C++" {
+        include!("cxx-sample/include/math-utils.h");
+        fn add(a: i32, b: i32) -> i32;
+        fn subtract(a: i32, b: i32) -> i32;
+        fn multiply(a: i32, b: i32) -> i32;
+        fn divide(a: f32, b: f32) -> f32;
+
+        fn getCircleArea(radius: f32) -> f32;
+        fn getCircleCircumference(radius: f32) -> f32;
+    }
+}
+
+fn main() {
+    let a = 10;
+    let b = 5;
+    let result_add: i32;
+    let result_subtract: i32;
+    let result_multiply: i32;
+    let result_divide: f32;
+
+    unsafe {
+        result_add = ffi::add(a, b);
+        result_subtract = ffi::subtract(a, b);
+        result_multiply = ffi::multiply(a, b);
+        result_divide = ffi::divide(a as f32, b as f32);
+    }
+
+    println!("{} + {} = {}", a, b, result_add);
+    println!("{} - {} = {}", a, b, result_subtract);
+    println!("{} * {} = {}", a, b, result_multiply);
+    println!("{} / {} = {}", a, b, result_divide);
+
+    let radius = 5.0;
+    let circle_area: f32;
+    let circle_circumference: f32;
+
+    unsafe {
+        circle_area = ffi::getCircleArea(radius);
+        circle_circumference = ffi::getCircleCircumference(radius);
+    }
+
+    println!("Area of circle with radius {}: {}", radius, circle_area);
+    println!("Circumference of circle with radius {}: {}", radius, circle_circumference);
+}

bindings/rust/cxx-sample/src/math-utils.cc

@@ -0,0 +1,70 @@
+// The MIT License
+//
+// Copyright (c) 2024 MGTheTrain
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "../include/math-utils.h"
+
+/**
+ * @brief Adds two integers.
+ * @param a The first integer.
+ * @param b The second integer.
+ * @return The sum of a and b.
+ */
+int32_t add(int32_t a, int32_t b) { return a + b; }
+
+/**
+ * @brief Subtracts one integer from another.
+ * @param a The integer to subtract from.
+ * @param b The integer to subtract.
+ * @return The result of subtracting b from a.
+ */
+int32_t subtract(int32_t a, int32_t b) { return a - b; }
+
+/**
+ * @brief Multiplies two integers.
+ * @param a The first integer.
+ * @param b The second integer.
+ * @return The product of a and b.
+ */
+int32_t multiply(int32_t a, int32_t b) { return a * b; }
+
+/**
+ * @brief Divides one float by another.
+ * @param a The float to divide.
+ * @param b The divisor.
+ * @return The result of dividing a by b.
+ * @throw Division by zero error if b is zero.
+ */
+float divide(float a, float b) { return a / b; }
+
+/**
+ * @brief Calculates the area of the circle.
+ * @param radius The radius of the circle.
+ * @return The area of the circle.
+ */
+float getCircleArea(float radius) { return M_PI * radius * radius; }
+
+/**
+ * @brief Calculates the circumference of the circle.
+ * @param radius The radius of the circle
+ * @return The circumference of the circle.
+ */
+float getCircleCircumference(float radius) { return 2 * M_PI * radius; }