1 files changed, 9 insertions, 1 deletions
diff --git a/include/ast.h b/include/ast.h
index 7b16796..25d9034 100644
--- a/include/ast.h
+++ b/include/ast.h
@@ -2,6 +2,7 @@
 #define AMALGAM_AST_H
 
 #include "defs.h"
+#include "std/defs.h"
 #include "std/buffer_view.h"
 #include "std/buffer.h"
 #include "std/misc.h"
@@ -108,6 +109,13 @@ struct LhsExpr {
     BufferView var_name;
     Variable type;
     Ast rhs_expr;
+    /*
+    A mutex is only available if the LhsExpr is public, because other threads (files)
+    can access it. It's used to prevent usage of unresolved data and also to decide which
+    thread has responsibility of resolving data.
+    TODO: Find a better way to store this. This most likely will use too much memory.
+    */
+    amal_mutex *mutex;
 };
 
 struct Import {
@@ -149,7 +157,7 @@ CHECK_RESULT int funcdecl_init(FunctionDecl *self, Scope *parent, ScopedAllocato
 CHECK_RESULT int funccall_init(FunctionCall *self, BufferView name, ScopedAllocator *allocator);
 CHECK_RESULT int structdecl_init(StructDecl *self, Scope *parent, ScopedAllocator *allocator);
 void structfield_init(StructField *self, BufferView name, BufferView type_name);
-void lhsexpr_init(LhsExpr *self, bool is_pub, bool is_const, BufferView var_name);
+CHECK_RESULT int lhsexpr_init(LhsExpr *self, bool is_pub, bool is_const, BufferView var_name, ScopedAllocator *allocator);
 void import_init(Import *self, BufferView path);
 CHECK_RESULT int string_init(String *self, BufferView str);
 void number_init(Number *self, i64 value, bool is_integer);