Added scopes

src/Compiler/ModuleBuilder.h

@@ -2,6 +2,7 @@
 #define MODULE_BUILDER_H
 
 #include <map>
+#include <stack>
 
 #include <llvm/IR/Module.h>
 #include <llvm/IR/IRBuilder.h>
@@ -33,6 +34,11 @@ class StatementBlock;
 
 using namespace std;
 
+typedef struct {
+    map<string, llvm::AllocaInst*> allocaMap;
+    map<string, llvm::Function*> funMap;
+} Scope;
+
 class ModuleBuilder {
 private:
     string moduleName;
@@ -48,8 +54,7 @@ private:
     llvm::Type *typeReal32;
 
     vector<shared_ptr<Statement>> statements;
-    map<string, llvm::AllocaInst*> allocaMap;
-    map<string, llvm::Function*> funMap;
+    stack<Scope> scopes;
 
     void buildStatement(shared_ptr<Statement> statement);
     void buildFunctionDeclaration(shared_ptr<StatementFunction> statement);
@@ -72,6 +77,12 @@ private:
     llvm::Value *valueForVar(shared_ptr<ExpressionVariable> expression);
     llvm::Value *valueForCall(shared_ptr<ExpressionCall> expression);
 
+    bool setAlloca(string name, llvm::AllocaInst *alloca);
+    llvm::AllocaInst *getAlloca(string name);
+
+    bool setFun(string name, llvm::Function *fun);
+    llvm::Function *getFun(string name);
+
     llvm::Type *typeForValueType(shared_ptr<ValueType> valueType);
     void failWithMessage(string message);