Add ICodeBuilder internal class

Author: adazem009

src/dev/engine/CMakeLists.txt

@@ -3,6 +3,7 @@ target_sources(scratchcpp
     executioncontext.cpp
     executioncontext_p.cpp
     executioncontext_p.h
+    internal/icodebuilder.h
     internal/llvmexecutablecode.cpp
     internal/llvmexecutablecode.h
     internal/llvmexecutioncontext.cpp

src/dev/engine/internal/icodebuilder.h

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <string>
+#include <memory>
+
+namespace libscratchcpp
+{
+
+class Value;
+class Variable;
+class List;
+class ExecutableCode;
+
+class ICodeBuilder
+{
+    public:
+        virtual ~ICodeBuilder() { }
+
+        virtual std::shared_ptr<ExecutableCode> finalize() = 0;
+
+        virtual void addFunctionCall(const std::string &functionName, int argCount, bool returns) = 0;
+        virtual void addConstValue(const Value &value) = 0;
+        virtual void addVariableValue(Variable *variable) = 0;
+        virtual void addListContents(List *list) = 0;
+
+        virtual void beginIfStatement() = 0;
+        virtual void beginElseBranch() = 0;
+        virtual void endIf() = 0;
+
+        virtual void beginLoop() = 0;
+        virtual void endLoop() = 0;
+
+        virtual void yield() = 0;
+};
+
+} // namespace libscratchcpp