diff --git a/src/abstract_tree/enum_definition.rs b/src/abstract_tree/enum_definition.rs
index c848a1f..0be3cfc 100644
--- a/src/abstract_tree/enum_definition.rs
+++ b/src/abstract_tree/enum_definition.rs
@@ -1,4 +1,9 @@
-use super::{AbstractTree, Identifier, Type, WithPosition};
+use crate::{
+    context::Context,
+    error::{RuntimeError, ValidationError},
+};
+
+use super::{AbstractTree, Action, Identifier, Type, WithPosition};
 
 #[derive(Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
 pub struct EnumDefinition {
@@ -22,24 +27,17 @@ impl EnumDefinition {
 }
 
 impl AbstractTree for EnumDefinition {
-    fn expected_type(
-        &self,
-        _context: &crate::context::Context,
-    ) -> Result<Type, crate::error::ValidationError> {
-        todo!()
+    fn expected_type(&self, _context: &Context) -> Result<Type, ValidationError> {
+        Ok(Type::None)
     }
 
-    fn validate(
-        &self,
-        _context: &crate::context::Context,
-    ) -> Result<(), crate::error::ValidationError> {
-        todo!()
+    fn validate(&self, _context: &Context) -> Result<(), ValidationError> {
+        Ok(())
     }
 
-    fn run(
-        self,
-        _context: &crate::context::Context,
-    ) -> Result<super::Action, crate::error::RuntimeError> {
-        todo!()
+    fn run(self, context: &Context) -> Result<Action, RuntimeError> {
+        context.set_enum_definition(self.name.clone(), self)?;
+
+        Ok(Action::None)
     }
 }
diff --git a/src/abstract_tree/statement.rs b/src/abstract_tree/statement.rs
index c0569e0..3b2d9ab 100644
--- a/src/abstract_tree/statement.rs
+++ b/src/abstract_tree/statement.rs
@@ -25,7 +25,7 @@ impl AbstractTree for Statement {
             Statement::Assignment(assignment) => assignment.expected_type(_context),
             Statement::Block(block) => block.expected_type(_context),
             Statement::Break => Ok(Type::None),
-            Statement::EnumDefinition(_) => todo!(),
+            Statement::EnumDefinition(enum_definition) => enum_definition.expected_type(_context),
             Statement::Expression(expression) => expression.expected_type(_context),
             Statement::IfElse(if_else) => if_else.expected_type(_context),
             Statement::Loop(r#loop) => r#loop.expected_type(_context),
@@ -38,7 +38,7 @@ impl AbstractTree for Statement {
             Statement::Assignment(assignment) => assignment.validate(_context),
             Statement::Block(block) => block.validate(_context),
             Statement::Break => Ok(()),
-            Statement::EnumDefinition(_) => todo!(),
+            Statement::EnumDefinition(enum_definition) => enum_definition.validate(_context),
             Statement::Expression(expression) => expression.validate(_context),
             Statement::IfElse(if_else) => if_else.validate(_context),
             Statement::Loop(r#loop) => r#loop.validate(_context),
@@ -51,7 +51,7 @@ impl AbstractTree for Statement {
             Statement::Assignment(assignment) => assignment.run(_context),
             Statement::Block(block) => block.run(_context),
             Statement::Break => Ok(Action::Break),
-            Statement::EnumDefinition(_) => todo!(),
+            Statement::EnumDefinition(enum_definition) => enum_definition.run(_context),
             Statement::Expression(expression) => expression.run(_context),
             Statement::IfElse(if_else) => if_else.run(_context),
             Statement::Loop(r#loop) => r#loop.run(_context),
diff --git a/src/context.rs b/src/context.rs
index 74e3193..27f320b 100644
--- a/src/context.rs
+++ b/src/context.rs
@@ -4,7 +4,7 @@ use std::{
 };
 
 use crate::{
-    abstract_tree::{Identifier, Type},
+    abstract_tree::{EnumDefinition, Identifier, Type},
     error::RwLockPoisonError,
     value::{BUILT_IN_FUNCTIONS, BUILT_IN_MODULES},
     Value,
@@ -77,6 +77,7 @@ impl Context {
             let r#type = match value_data {
                 ValueData::Type(r#type) => r#type.clone(),
                 ValueData::Value(value) => value.r#type(),
+                ValueData::EnumDefinition(_) => return Ok(None),
             };
 
             return Ok(Some(r#type.clone()));
@@ -117,6 +118,18 @@ impl Context {
         }
     }
 
+    pub fn set_enum_definition(
+        &self,
+        identifier: Identifier,
+        definition: EnumDefinition,
+    ) -> Result<(), RwLockPoisonError> {
+        let mut inner = self.inner.write()?;
+
+        inner.insert(identifier, ValueData::EnumDefinition(definition));
+
+        Ok(())
+    }
+
     pub fn set_type(&self, identifier: Identifier, r#type: Type) -> Result<(), RwLockPoisonError> {
         self.inner
             .write()?
@@ -138,4 +151,5 @@ impl Context {
 pub enum ValueData {
     Type(Type),
     Value(Value),
+    EnumDefinition(EnumDefinition),
 }
diff --git a/src/parser.rs b/src/parser.rs
index bd62239..0a4f338 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -506,11 +506,11 @@ mod tests {
                 vec![
                     (
                         Identifier::new("Foo"),
-                        vec![Type::Custom(Identifier::new("F")).with_position((0, 0))],
+                        vec![Type::Custom(Identifier::new("F")).with_position((62, 63))],
                     ),
                     (
                         Identifier::new("Bar"),
-                        vec![Type::Custom(Identifier::new("B")).with_position((0, 0))]
+                        vec![Type::Custom(Identifier::new("B")).with_position((90, 91))]
                     )
                 ]
             ))