diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3cd32c0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+/cmake-build-debug/**
+/.idea/**
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..918c4c3
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,44 @@
+cmake_minimum_required(VERSION 3.9)
+project(SchemeEditor)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+find_package(Qt5 CONFIG REQUIRED COMPONENTS Core Gui Widgets)
+set(CMAKE_AUTOMOC TRUE)
+set(CMAKE_AUTORCC TRUE)
+set(CMAKE_AUTOUIC TRUE)
+add_executable(SchemeEditor
+  mainwindow.cpp
+  comdel/display/component_display.cpp
+  comdel/display/schema_display.cpp
+  comdel/display/library_display.cpp
+  comdel/domain/value.cpp
+  comdel/domain/schema.cpp
+  comdel/domain/component.cpp
+        comdel/domain/connectioninstance.cpp
+  comdel/domain/rule.cpp
+  comdel/domain/wireinstance.cpp
+  comdel/domain/attribute.cpp
+  comdel/domain/bus.cpp
+  comdel/domain/pin.cpp
+  comdel/domain/display.cpp
+  comdel/domain/library.cpp
+  comdel/domain/functionsignature.cpp
+  comdel/domain/addressspace.cpp
+  comdel/domain/instanceattribute.cpp
+  comdel/domain/connection.cpp
+  comdel/domain/instance.cpp
+  comdel/domain/comdelgenerator.cpp
+  comdel/parser/assert.cpp
+  comdel/parser/comdelparser.cpp
+  comdel/parser/token.cpp
+  comdel/parser/parser_util.cpp
+  comdel/parser/sourceerror.cpp
+  comdel/parser/parsecontext.cpp
+  comdel/parser/tokenstype.cpp
+  comdel/parser/astnode.cpp
+  comdel/parser/parserutil.cpp
+  comdel/parser/comdellexer.cpp
+  main.cpp
+  mainwindow.ui
+)
+target_link_libraries(SchemeEditor Qt5::Core Qt5::Gui Qt5::Widgets)
diff --git a/comdel/domain/comdelgenerator.cpp b/comdel/domain/comdelgenerator.cpp
index 9068270..c722d04 100644
--- a/comdel/domain/comdelgenerator.cpp
+++ b/comdel/domain/comdelgenerator.cpp
@@ -150,7 +150,7 @@ std::optional<Library> ComdelGenerator::loadLibrary(LibraryNode node)
 
     for(uint i=0; i<node.messages.size(); i++) {
         if(!node.messages[i].value.is(ValueNode::STRING)) {
-            errors.push_back(SourceError{node.messages[i].span, "expected `string`"});
+            errors.push_back(SourceError{node.messages[i].value.span, "expected `string`"});
         } else {
             messages[node.messages[i].key.value] = node.messages[i].value.asString();
         }
diff --git a/comdel/domain/comdelvalidator.cpp b/comdel/domain/comdelvalidator.cpp
deleted file mode 100644
index eb142bc..0000000
--- a/comdel/domain/comdelvalidator.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "comdelvalidator.h"
-
-namespace domain {
-
-ComdelValidator::ComdelValidator(std::vector<FunctionSignature> signatures)
-    : signatures(signatures)
-{}
-
-std::vector<SourceError> ComdelValidator::getErrors() {
-    return errors;
-}
-
-void validateLibrary(Library library, ParseContext* parseContext, std::ostream& stream) {
-
-}
-
-
-} // namespace domain
diff --git a/comdel/domain/comdelvalidator.h b/comdel/domain/comdelvalidator.h
deleted file mode 100644
index ee87d43..0000000
--- a/comdel/domain/comdelvalidator.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef DOMAIN_COMDELVALIDATOR_H
-#define DOMAIN_COMDELVALIDATOR_H
-
-#include "functionsignature.h"
-#include "library.h"
-
-#include <vector>
-
-#include <comdel/parser/parsecontext.h>
-#include <comdel/parser/sourceerror.h>
-
-namespace domain {
-
-class ComdelValidator
-{
-private:
-    std::vector<SourceError> errors;
-    std::vector<FunctionSignature> signatures;
-
-public:
-
-    ComdelValidator(std::vector<FunctionSignature> signatures);
-
-    std::vector<SourceError> getErrors() {
-        return errors;
-    }
-
-    void validateLibrary(Library library, ParseContext* parseContext, std::ostream& stream);
-
-};
-
-} // namespace domain
-
-#endif // DOMAIN_COMDELVALIDATOR_H
diff --git a/comdel/domain/value.h b/comdel/domain/value.h
index f9e457f..eb3cedc 100644
--- a/comdel/domain/value.h
+++ b/comdel/domain/value.h
@@ -6,6 +6,7 @@
 #include <string>
 #include <optional>
 
+
 namespace domain {
 
 class Value
diff --git a/comdel/parser/astnode.h b/comdel/parser/astnode.h
index 26f4de9..f3c1241 100644
--- a/comdel/parser/astnode.h
+++ b/comdel/parser/astnode.h
@@ -66,7 +66,7 @@ struct AddressSpaceNode: public AstNode
 };
 
 
-class ValueNode: AstNode
+class ValueNode: public AstNode
 {
 public:
     enum ValueType {
diff --git a/main.cpp b/main.cpp
index 547577a..cd2dba4 100644
--- a/main.cpp
+++ b/main.cpp
@@ -11,6 +11,8 @@
 
 int main(int argc, char *argv[])
 {
+
+
     QApplication a(argc, argv);
     MainWindow w;
     w.show();