feat: support cpp language with turbo modules

Author: satya164

.github/workflows/build-templates.yml

@@ -35,12 +35,18 @@ jobs:
           - type: module-legacy
             language: cpp
             example: native
+          - type: module-mixed
+            language: cpp
+            example: native
+          - type: module-turbo
+            language: cpp
+            example: native
           - type: library
             language: js
-            example: expo
+            example: native
           - type: library
             language: js
-            example: native
+            example: expo
 
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}-${{ matrix.type }}-${{ matrix.language }}-${{ matrix.example }}
@@ -89,7 +95,7 @@ jobs:
           echo "work_dir=$WORK_DIR" >> $GITHUB_ENV
 
           # Build Android for only some matrices to skip redundant builds
-          if [[ ${{ matrix.type }} == view && ${{ matrix.language }} == *-objc ]] || [[ ${{ matrix.type }} == module-* && ${{ matrix.language }} == *-objc ]] || [[ ${{ matrix.type }} == module-legacy && ${{ matrix.language }} == cpp ]]; then
+          if [[ ${{ matrix.type }} == view && ${{ matrix.language }} == *-objc ]] || [[ ${{ matrix.type }} == module-* && ${{ matrix.language }} == *-objc ]] || [[ ${{ matrix.type }} == module-* && ${{ matrix.language }} == cpp ]]; then
             echo "build_android=1" >> $GITHUB_ENV
           fi
 

packages/create-react-native-library/src/index.ts

@@ -301,11 +301,14 @@ async function create(argv: yargs.Arguments<any>) {
         if (values.type !== 'module-turbo' && values.type !== 'module-mixed') {
           languages.push(
             { title: 'Java & Swift', value: 'java-swift' },
-            { title: 'Kotlin & Swift', value: 'kotlin-swift' },
-            { title: 'C++ for both iOS & Android', value: 'cpp' }
+            { title: 'Kotlin & Swift', value: 'kotlin-swift' }
           );
         }
 
+        if (values.type !== 'view') {
+          languages.push({ title: 'C++ for Android & iOS', value: 'cpp' });
+        }
+
         return languages;
       },
     },

packages/create-react-native-library/templates/cpp-library/android/cpp-adapter.cpp

@@ -3,6 +3,10 @@
 
 extern "C"
 JNIEXPORT jint JNICALL
+<% if (project.architecture == 'mixed') { -%>
+Java_com_<%- project.package -%>_<%- project.name -%>ModuleImpl_multiply(JNIEnv *env, jclass type, jdouble a, jdouble b) {
+<% } else { -%>
 Java_com_<%- project.package -%>_<%- project.name -%>Module_nativeMultiply(JNIEnv *env, jclass type, jdouble a, jdouble b) {
-    return example::multiply(a, b);
+<% } -%>
+    return <%- project.package -%>::multiply(a, b);
 }

packages/create-react-native-library/templates/cpp-library/cpp/{%- project.identifier %}.cpp

@@ -1,7 +1,7 @@
 #include "<%- project.identifier -%>.h"
 
-namespace example {
-	int multiply(double a, double b) {
+namespace <%- project.package -%> {
+	double multiply(double a, double b) {
 		return a * b;
 	}
 }

packages/create-react-native-library/templates/cpp-library/cpp/{%- project.identifier %}.h

@@ -1,8 +1,8 @@
-#ifndef EXAMPLE_H
-#define EXAMPLE_H
+#ifndef <%- project.package -%>_H
+#define <%- project.package -%>_H
 
-namespace example {
-  int multiply(double a, double b);
+namespace <%- project.package -%> {
+  double multiply(double a, double b);
 }
 
-#endif /* EXAMPLE_H */
+#endif /* <%- project.package -%>_H */

packages/create-react-native-library/templates/cpp-library/ios/{%- project.name %}.h

@@ -24,11 +24,7 @@ public String getName() {
 
 <% if (project.cpp) { -%>
   static {
-    try {
-      // Used to load the 'native-lib' library on application startup.
-      System.loadLibrary("cpp");
-    } catch (Exception ignored) {
-    }
+    System.loadLibrary("cpp");
   }
 <% } -%>
 
@@ -44,6 +40,6 @@ public void multiply(double a, double b, Promise promise) {
   }
 
 <% if (project.cpp) { -%>
-  public static native double nativeMultiply(double a, double b);
+  private static native double nativeMultiply(double a, double b);
 <% } -%>
 }

packages/create-react-native-library/templates/cpp-library/ios/{%- project.name %}.mm

@@ -23,6 +23,6 @@ public String getName() {
   // See https://reactnative.dev/docs/native-modules-android
   @ReactMethod
   public void multiply(double a, double b, Promise promise) {
-    <%- project.name -%>ModuleImpl.multiply(a, b, promise);
+    promise.resolve(<%- project.name -%>ModuleImpl.multiply(a, b));
   }
 }

packages/create-react-native-library/templates/java-library-legacy/android/src/main/java/com/{%- project.package %}/{%- project.name %}Module.java

@@ -1,16 +1,21 @@
 package com.<%- project.package -%>;
 
-import com.facebook.react.bridge.Promise;
-import com.facebook.react.bridge.ReactMethod;
-
 /**
  * This is where the module implementation lives
  * The exposed methods can be defined in the `turbo` and `legacy` folders
  */
 public class <%- project.name -%>ModuleImpl  {
   public static final String NAME = "<%- project.name -%>";
 
-  public static void multiply(double a, double b, Promise promise) {
-    promise.resolve(a * b);
+<% if (project.cpp) { -%>
+  static {
+    System.loadLibrary("cpp");
+  }
+
+  public static native double multiply(double a, double b);
+<% } else { -%>
+  public static double multiply(double a, double b) {
+    return a * b;
   }
+<% } -%>
 }

packages/create-react-native-library/templates/java-library-mixed/android/src/legacy/{%- project.name %}Module.java

@@ -23,6 +23,6 @@ public String getName() {
   @Override
   @ReactMethod
   public void multiply(double a, double b, Promise promise) {
-    <%- project.name -%>ModuleImpl.multiply(a, b, promise);
+    promise.resolve(<%- project.name -%>ModuleImpl.multiply(a, b));
   }
 }

packages/create-react-native-library/templates/java-library-mixed/android/src/main/java/com/{%- project.package %}/{%- project.name %}ModuleImpl.java

@@ -19,10 +19,24 @@ public String getName() {
     return NAME;
   }
 
+<% if (project.cpp) { -%>
+  static {
+    System.loadLibrary("cpp");
+  }
+<% } -%>
+
   // Example method
   // See https://reactnative.dev/docs/native-modules-android
   @Override
   public double multiply(double a, double b) {
+<% if (project.cpp) { -%>
+    return nativeMultiply(a, b);
+<% } else { -%>
     return a * b;
+<% } -%>
   }
+
+<% if (project.cpp) { -%>
+  private static native double nativeMultiply(double a, double b);
+<% } -%>
 }

packages/create-react-native-library/templates/java-library-mixed/android/src/turbo/{%- project.name %}Module.java

@@ -14,25 +14,7 @@ class <%- project.name -%>Module(reactContext: ReactApplicationContext) : ReactC
   // Example method
   // See https://reactnative.dev/docs/native-modules-android
   @ReactMethod
-  fun multiply(a: Int, b: Int, promise: Promise) {
-  <% if (project.cpp) { -%>
-    promise.resolve(nativeMultiply(a, b));
-  <% } else { -%>
+  fun multiply(a: Double, b: Double, promise: Promise) {
     promise.resolve(a * b)
-  <% } -%>
   }
-
-  <% if (project.cpp) { -%>
-  external fun nativeMultiply(a: Int, b: Int): Int;
-
-  companion object
-  {
-
-    // Used to load the 'native-lib' library on application startup.
-    init
-    {
-      System.loadLibrary("cpp")
-    }
-  }
-  <% } -%>
 }

packages/create-react-native-library/templates/java-library-turbo/android/src/main/java/com/{%- project.package %}/{%- project.name %}Module.java

@@ -1,3 +1,9 @@
+<% if (project.cpp) { -%>
+#ifdef __cplusplus
+#import "<%- project.identifier -%>.h"
+#endif
+<% } -%>
+
 #ifdef RCT_NEW_ARCH_ENABLED
 #import "RN<%- project.name -%>Spec.h"
 

packages/create-react-native-library/templates/kotlin-library-legacy/android/src/main/java/com/{%- project.package %}/{%- project.name %}Module.kt

@@ -6,26 +6,14 @@ @implementation <%- project.name -%>
 
 <% if (project.architecture == 'turbo') { -%>
 - (NSNumber *)multiply:(double)a b:(double)b {
+<% if (project.cpp) { -%>
+    NSNumber *result = @(<%- project.package -%>::multiply(a, b));
+<% } else { -%>
     NSNumber *result = @(a * b);
+<% } -%>
 
     return result;
 }
-<% } else if (project.architecture == 'mixed') { -%>
-// Example method
-// See // https://reactnative.dev/docs/native-modules-ios
-RCT_REMAP_METHOD(multiply,
-                 multiplyWithA:(double)a  withB:(double)b
-                 withResolver:(RCTPromiseResolveBlock)resolve
-                 withRejecter:(RCTPromiseRejectBlock)reject)
-{
-    [self multiply:a b:b resolve:resolve reject:reject];
-}
-
-- (void)multiply:(double)a b:(double)b resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject {
-    NSNumber *result = @(a * b);
-
-    resolve(result);
-}
 <% } else { -%>
 // Example method
 // See // https://reactnative.dev/docs/native-modules-ios
@@ -34,9 +22,13 @@ - (void)multiply:(double)a b:(double)b resolve:(RCTPromiseResolveBlock)resolve r
                  withResolver:(RCTPromiseResolveBlock)resolve
                  withRejecter:(RCTPromiseRejectBlock)reject)
 {
-  NSNumber *result = @(a * b);
+<% if (project.cpp) { -%>
+    NSNumber *result = @(<%- project.package -%>::multiply(a, b));
+<% } else { -%>
+    NSNumber *result = @(a * b);
+<% } -%>
 
-  resolve(result);
+    resolve(result);
 }
 <% } -%>