Move common expression classes to simple parsing setup

src/Parser/Parsing/Simple/Expression/SimpleExpressionValue.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "ISimpleExpression.h"
+#include "Utils/ClassUtils.h"
+
+class ISimpleExpression;
+class SimpleExpressionValue final : public ISimpleExpression
+{
+public:
+    enum class Type
+    {
+        STRING,
+        DOUBLE,
+        INT
+    };
+
+    Type m_type;
+    std::shared_ptr<std::string> m_string_value;
+    union
+    {
+        double m_double_value;
+        int m_int_value;
+    };
+
+    explicit SimpleExpressionValue(std::string stringValue);
+    explicit SimpleExpressionValue(double doubleValue);
+    explicit SimpleExpressionValue(int intValue);
+
+    bool IsStatic() override;
+    SimpleExpressionValue Evaluate() override;
+    _NODISCARD bool IsTruthy() const;
+};