ExecutionContext: Add promise API

Author: adazem009

include/scratchcpp/dev/executioncontext.h

@@ -9,6 +9,7 @@ namespace libscratchcpp
 {
 
 class Target;
+class Promise;
 class ExecutionContextPrivate;
 
 /*! \brief The ExecutionContext represents the execution context of a target (can be a clone) with variables, lists, etc. */
@@ -21,6 +22,9 @@ class LIBSCRATCHCPP_EXPORT ExecutionContext
 
         Target *target() const;
 
+        std::shared_ptr<Promise> promise() const;
+        void setPromise(std::shared_ptr<Promise> promise);
+
     private:
         spimpl::unique_impl_ptr<ExecutionContextPrivate> impl;
 };

src/dev/engine/executioncontext.cpp

@@ -17,3 +17,15 @@ Target *ExecutionContext::target() const
 {
     return impl->target;
 }
+
+/*! Returns the script promise. */
+std::shared_ptr<Promise> ExecutionContext::promise() const
+{
+    return impl->promise;
+}
+
+/*! Sets the script promise (yields until the promise is resolved). */
+void ExecutionContext::setPromise(std::shared_ptr<Promise> promise)
+{
+    impl->promise = promise;
+}

src/dev/engine/executioncontext_p.h

@@ -2,16 +2,20 @@
 
 #pragma once
 
+#include <memory>
+
 namespace libscratchcpp
 {
 
 class Target;
+class Promise;
 
 struct ExecutionContextPrivate
 {
         ExecutionContextPrivate(Target *target);
 
         Target *target = nullptr;
+        std::shared_ptr<Promise> promise;
 };
 
 } // namespace libscratchcpp

test/dev/executioncontext/executioncontext_test.cpp

@@ -1,5 +1,6 @@
 #include <scratchcpp/dev/executioncontext.h>
 #include <scratchcpp/target.h>
+#include <scratchcpp/dev/promise.h>
 
 #include "../../common.h"
 
@@ -11,3 +12,17 @@ TEST(ExecutionContextTest, Constructor)
     ExecutionContext ctx(&target);
     ASSERT_EQ(ctx.target(), &target);
 }
+
+TEST(ExecutionContextTest, Promise)
+{
+    Target target;
+    ExecutionContext ctx(&target);
+    ASSERT_EQ(ctx.promise(), nullptr);
+
+    auto promise = std::make_shared<Promise>();
+    ctx.setPromise(promise);
+    ASSERT_EQ(ctx.promise(), promise);
+
+    ctx.setPromise(nullptr);
+    ASSERT_EQ(ctx.promise(), nullptr);
+}