Compiler: Add invalidateTarget() method

Author: adazem009

include/scratchcpp/compiler.h

@@ -153,6 +153,8 @@ class LIBSCRATCHCPP_EXPORT Compiler
         void createThreadStop();
         void createStopWithoutSync();
 
+        void invalidateTarget();
+
         void createProcedureCall(BlockPrototype *prototype, const Compiler::Args &args);
 
         Input *input(const std::string &name) const;

src/engine/compiler.cpp

@@ -721,6 +721,15 @@ void Compiler::createStopWithoutSync()
     impl->builder->createStopWithoutSync();
 }
 
+/*!
+ * Creates a sprite/stage invalidation point.\n
+ * Use this if synchronization is not possible because the target has been deleted.
+ */
+void Compiler::invalidateTarget()
+{
+    impl->builder->invalidateTarget();
+}
+
 /*! Creates a call to the procedure with the given prototype. */
 void Compiler::createProcedureCall(BlockPrototype *prototype, const libscratchcpp::Compiler::Args &args)
 {

test/compiler/compiler_test.cpp

@@ -1701,6 +1701,20 @@ TEST_F(CompilerTest, CreateStopWithoutSync)
     compile(m_compiler.get(), block.get());
 }
 
+TEST_F(CompilerTest, InvalidateTarget)
+{
+
+    auto block = std::make_shared<Block>("", "");
+
+    block->setCompileFunction([](Compiler *compiler) -> CompilerValue * {
+        EXPECT_CALL(*m_builder, invalidateTarget());
+        compiler->invalidateTarget();
+        return nullptr;
+    });
+
+    compile(m_compiler.get(), block.get());
+}
+
 TEST_F(CompilerTest, CreateProcedureCall)
 {