diff --git a/src/main/kotlin/dsl/ast/model/node/AccessOperatorNode.kt b/src/main/kotlin/dsl/ast/model/node/AccessOperatorNode.kt
new file mode 100644
index 0000000..b6a51bf
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/AccessOperatorNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class AccessOperatorNode(position: TokenPosition) : BinaryOperatorAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/AtomAbstractNode.kt b/src/main/kotlin/dsl/ast/model/node/AtomAbstractNode.kt
new file mode 100644
index 0000000..b94a8b7
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/AtomAbstractNode.kt
@@ -0,0 +1,12 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+abstract class AtomAbstractNode(position: TokenPosition) : Node(1, position) {
+    var value: Any
+    get() = children[0]
+    set(value) {
+        children[0] = value
+    }
+}
+
diff --git a/src/main/kotlin/dsl/ast/model/node/BinaryOperatorAbstractNode.kt b/src/main/kotlin/dsl/ast/model/node/BinaryOperatorAbstractNode.kt
new file mode 100644
index 0000000..5bc8ade
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/BinaryOperatorAbstractNode.kt
@@ -0,0 +1,23 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+abstract class BinaryOperatorAbstractNode(position: TokenPosition) : Node(3, position) {
+    var lhs: Any
+    get() = children[0]
+    set(value) {
+        children[0] = value
+    }
+
+    var operator: Any
+    get() = children[1]
+    set(value) {
+        children[1] = value
+    }
+
+    var rhs: Any
+    get() = children[2]
+    set(value) {
+        children[2] = value
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/BoolLiteralNode.kt b/src/main/kotlin/dsl/ast/model/node/BoolLiteralNode.kt
new file mode 100644
index 0000000..aa06e1c
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/BoolLiteralNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class BoolLiteralNode(position: TokenPosition) : AtomAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/FloatLiteralNode.kt b/src/main/kotlin/dsl/ast/model/node/FloatLiteralNode.kt
new file mode 100644
index 0000000..545585f
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/FloatLiteralNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class FloatLiteralNode(position: TokenPosition) : AtomAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/IntegerLiteralNode.kt b/src/main/kotlin/dsl/ast/model/node/IntegerLiteralNode.kt
new file mode 100644
index 0000000..cfcb27c
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/IntegerLiteralNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class IntegerLiteralNode(position: TokenPosition) : AtomAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/MinusOperatorNode.kt b/src/main/kotlin/dsl/ast/model/node/MinusOperatorNode.kt
new file mode 100644
index 0000000..f89a37e
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/MinusOperatorNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class MinusOperatorNode(position: TokenPosition) : UnaryOperatorAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/Node.kt b/src/main/kotlin/dsl/ast/model/node/Node.kt
new file mode 100644
index 0000000..d6d2549
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/Node.kt
@@ -0,0 +1,38 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+abstract class Node(numberOfChildren: Int, val position: TokenPosition) {
+    protected var children: MutableList<Any> = MutableList(numberOfChildren) { NONE }
+
+    constructor(children: List<Any>, position: TokenPosition) : this(children.size, position) {
+        this.children = children.toMutableList()
+    }
+
+    operator fun get(index: Int) = children[index]
+
+    operator fun set(index: Int, value: Any) {
+        children[index] = value
+    }
+
+    fun pretty(prefix: String = "", last: Boolean = true, first: Boolean = true) {
+        var newPrefix = prefix
+        var newLast = last
+        val nodeName = this::class.simpleName ?: "<anonymous>"
+
+        println(newPrefix + (if (first) "" else if (newLast) "└─" else "├─") + nodeName + " " + position)
+        newPrefix += if (newLast) "   " else "│  "
+        for((index, child) in children.withIndex()) {
+            newLast = index == children.size - 1
+            if(child is Node) {
+                child.pretty(newPrefix, newLast, false)
+            } else {
+                println(newPrefix + (if(newLast) "└ " else "├ ") + child)
+            }
+        }
+    }
+
+    companion object {
+        val NONE = NoneNode()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/NoneNode.kt b/src/main/kotlin/dsl/ast/model/node/NoneNode.kt
new file mode 100644
index 0000000..2e6b39a
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/NoneNode.kt
@@ -0,0 +1,7 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class NoneNode : Node(0,
+    TokenPosition.NONE
+)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/NoteLiteralNode.kt b/src/main/kotlin/dsl/ast/model/node/NoteLiteralNode.kt
new file mode 100644
index 0000000..d987904
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/NoteLiteralNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class NoteLiteralNode(position: TokenPosition) : AtomAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/StringLiteralNode.kt b/src/main/kotlin/dsl/ast/model/node/StringLiteralNode.kt
new file mode 100644
index 0000000..39b3d5b
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/StringLiteralNode.kt
@@ -0,0 +1,5 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+class StringLiteralNode(position: TokenPosition) : AtomAbstractNode(position)
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/TokenNode.kt b/src/main/kotlin/dsl/ast/model/node/TokenNode.kt
new file mode 100644
index 0000000..c9f9229
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/TokenNode.kt
@@ -0,0 +1,15 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.Token
+
+class TokenNode(_token: Token) : Node(1, _token.position) {
+    var type: Any
+    get() = children[0]
+    set(value) {
+        children[0] = value
+    }
+
+    init {
+        type = _token
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/model/node/UnaryOperatorAbstractNode.kt b/src/main/kotlin/dsl/ast/model/node/UnaryOperatorAbstractNode.kt
new file mode 100644
index 0000000..90bcd48
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/model/node/UnaryOperatorAbstractNode.kt
@@ -0,0 +1,17 @@
+package dsl.ast.model.node
+
+import dsl.token.model.entity.TokenPosition
+
+abstract class UnaryOperatorAbstractNode(position: TokenPosition) : Node(2, position) {
+    var operator: Any
+    get() = children[0]
+    set(value) {
+        children[0] = value
+    }
+
+    var value: Any
+    get() = children[1]
+    set(_value) {
+        children[1] = _value
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/dsl/ast/node/Node.kt b/src/main/kotlin/dsl/ast/node/Node.kt
deleted file mode 100644
index 21f1b41..0000000
--- a/src/main/kotlin/dsl/ast/node/Node.kt
+++ /dev/null
@@ -1,36 +0,0 @@
-package dsl.ast.node
-
-import dsl.token.model.entity.TokenPosition
-
-class NoneNode : Node(0, TokenPosition.NONE)
-
-abstract class Node(numberOfChildren: Int, val position: TokenPosition) {
-    protected var children: Array<Node> = Array(numberOfChildren) { NONE }
-
-    constructor(children: Array<Node>, position: TokenPosition) : this(children.size, position) {
-        this.children = children
-    }
-
-    operator fun get(index: Int) = children[index]
-
-    operator fun set(index: Int, value: Node) {
-        children[index] = value
-    }
-
-    fun pretty(prefix: String = "", last: Boolean = true, first: Boolean = true) {
-        var newPrefix = prefix
-        var newLast = last
-        val newFirst = first
-
-        println(newPrefix + (if (newFirst) "" else if (newLast) "└─" else "├─") + this::class.simpleName + " " + position)
-        newPrefix += if (newLast) "   " else "│  "
-        for((index, child) in children.withIndex()) {
-            newLast = index == children.size - 1
-            child.pretty(newPrefix, newLast, false)
-        }
-    }
-
-    companion object {
-        val NONE = NoneNode()
-    }
-}
\ No newline at end of file