3 files changed, 39 insertions, 16 deletions
diff --git a/flowgraph/node.cpp b/flowgraph/node.cpp
index 795a252..9b68d74 100644
--- a/flowgraph/node.cpp
+++ b/flowgraph/node.cpp
@@ -14,17 +14,22 @@ Data FlowGraph::MakeConstantInt(int i)
  return Data(DataType::Int, std::make_shared<Constant>(value));
 }
 
-Data FlowGraph::MakeLocalPointer(const std::string& name)
+Data FlowGraph::MakeLocalPointer(FlowGraph::LocalScope& scope, const std::string& name)
 {
- return Data(DataType::Pointer, std::make_shared<LocalStorage>(name));
+ return Data(DataType::Pointer, std::make_shared<LocalStorage>(scope, name));
 }
 
-Data FlowGraph::MakeLocalSize(const std::string& name)
+Data FlowGraph::MakeLocalSize(FlowGraph::LocalScope& scope, const std::string& name)
 {
- return Data(DataType::Size, std::make_shared<LocalStorage>(name));
+ return Data(DataType::Size, std::make_shared<LocalStorage>(scope, name));
 }
 
 Data FlowGraph::MakeTemporaryInt(FlowGraph::LocalScope& scope)
 {
  return Data(DataType::Int, std::make_shared<TemporaryStorage>(scope));
 }
+
+LocalScope& CreateScopeOp::scope()
+{
+ return m_scope;
+}
diff --git a/flowgraph/node.h b/flowgraph/node.h
index 9ae5479..98c684d 100644
--- a/flowgraph/node.h
+++ b/flowgraph/node.h
@@ -43,8 +43,8 @@ namespace FlowGraph {
  };
 
  Data MakeConstantInt(int i);
- Data MakeLocalPointer(const std::string& name);
- Data MakeLocalSize(const std::string& name);
+ Data MakeLocalPointer(FlowGraph::LocalScope& scope, const std::string& name);
+ Data MakeLocalSize(FlowGraph::LocalScope& scope, const std::string& name);
  Data MakeTemporaryInt(LocalScope& scope);
 
  class MemCopy: public Node
@@ -114,7 +114,8 @@ namespace FlowGraph {
  {
   Increment,
   Decrement,
-  Negate
+  Negate,
+  Store // just take Data as-is to store it at destination
  };
 
  class UnaryOperation: public Node
@@ -159,4 +160,21 @@ namespace FlowGraph {
   BinaryOperationType m_type;
  };
 
+ // Open a new scope, with stack frame
+ class CreateScopeOp: public Node
+ {
+ public:
+  CreateScopeOp() {}
+  LocalScope& scope();
+ private:
+  LocalScope m_scope;
+ };
+
+ // Close current scope, closing stack frame
+ class DestroyScopeOp: public Node
+ {
+ public:
+  DestroyScopeOp() {}
+ };
+
 } // namespace FlowGraph
diff --git a/flowgraph/storage.h b/flowgraph/storage.h
index 28aae1e..fd3c085 100644
--- a/flowgraph/storage.h
+++ b/flowgraph/storage.h
@@ -37,15 +37,6 @@ namespace FlowGraph {
   std::string m_name;
  };
 
- class LocalStorage : public Storage
- {
- public:
-  LocalStorage(const std::string& name): m_name(name) {}
-  const std::string& name() const { return m_name; }
- private:
-  std::string m_name;
- };
-
  // Provide a context for local temporaries name generation
  class LocalScope
  {
@@ -56,6 +47,15 @@ namespace FlowGraph {
   size_t m_index{ 0 };
  };
 
+ class LocalStorage : public Storage
+ {
+ public:
+  LocalStorage(LocalScope& scope, const std::string& name): m_name(name) {}
+  const std::string& name() const { return m_name; }
+ private:
+  std::string m_name;
+ };
+
  // intermediate results, anonymous values
  // use generated name
  class TemporaryStorage : public Storage