diff --git a/src/abstract_tree/as.rs b/src/abstract_tree/as.rs
index 3e87b9d..cad906e 100644
--- a/src/abstract_tree/as.rs
+++ b/src/abstract_tree/as.rs
@@ -15,7 +15,7 @@ pub struct As {
 
 impl AbstractTree for As {
     fn from_syntax(node: Node, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "as", node)?;
+        SyntaxError::expect_syntax_node("as", node)?;
 
         let expression_node = node.child(0).unwrap();
         let expression = Expression::from_syntax(expression_node, source, context)?;
diff --git a/src/abstract_tree/assignment.rs b/src/abstract_tree/assignment.rs
index 7171d57..c9a7c9e 100644
--- a/src/abstract_tree/assignment.rs
+++ b/src/abstract_tree/assignment.rs
@@ -23,7 +23,7 @@ impl AbstractTree for Assignment {
         source: &str,
         context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "assignment", syntax_node)?;
+        SyntaxError::expect_syntax_node("assignment", syntax_node)?;
 
         let child_count = syntax_node.child_count();
 
diff --git a/src/abstract_tree/assignment_operator.rs b/src/abstract_tree/assignment_operator.rs
index b94c92d..3e0f29a 100644
--- a/src/abstract_tree/assignment_operator.rs
+++ b/src/abstract_tree/assignment_operator.rs
@@ -16,10 +16,10 @@ pub enum AssignmentOperator {
 impl AbstractTree for AssignmentOperator {
     fn from_syntax(
         node: SyntaxNode,
-        source: &str,
+        _source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "assignment_operator", node)?;
+        SyntaxError::expect_syntax_node("assignment_operator", node)?;
 
         let operator_node = node.child(0).unwrap();
         let operator = match operator_node.kind() {
@@ -30,8 +30,7 @@ impl AbstractTree for AssignmentOperator {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "=, += or -=".to_string(),
                     actual: operator_node.kind().to_string(),
-                    location: operator_node.start_position(),
-                    relevant_source: source[operator_node.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/block.rs b/src/abstract_tree/block.rs
index 482ee8f..10fdbe4 100644
--- a/src/abstract_tree/block.rs
+++ b/src/abstract_tree/block.rs
@@ -34,7 +34,7 @@ impl Block {
 
 impl AbstractTree for Block {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "block", node)?;
+        SyntaxError::expect_syntax_node("block", node)?;
 
         let first_child = node.child(0).unwrap();
         let is_async = first_child.kind() == "async";
diff --git a/src/abstract_tree/command.rs b/src/abstract_tree/command.rs
index 88c9c67..98c8034 100644
--- a/src/abstract_tree/command.rs
+++ b/src/abstract_tree/command.rs
@@ -21,7 +21,7 @@ impl AbstractTree for Command {
         source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "command", node)?;
+        SyntaxError::expect_syntax_node("command", node)?;
 
         let command_text_node = node.child(1).unwrap();
         let command_text = source[command_text_node.byte_range()].to_string();
diff --git a/src/abstract_tree/enum_defintion.rs b/src/abstract_tree/enum_defintion.rs
index 777b1d7..6504d08 100644
--- a/src/abstract_tree/enum_defintion.rs
+++ b/src/abstract_tree/enum_defintion.rs
@@ -31,7 +31,7 @@ impl EnumDefinition {
 
 impl AbstractTree for EnumDefinition {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "enum_definition", node)?;
+        SyntaxError::expect_syntax_node("enum_definition", node)?;
 
         let identifier_node = node.child(1).unwrap();
         let identifier = Identifier::from_syntax(identifier_node, source, context)?;
diff --git a/src/abstract_tree/enum_pattern.rs b/src/abstract_tree/enum_pattern.rs
index 77f839e..e14b2c3 100644
--- a/src/abstract_tree/enum_pattern.rs
+++ b/src/abstract_tree/enum_pattern.rs
@@ -29,7 +29,7 @@ impl EnumPattern {
 
 impl AbstractTree for EnumPattern {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "enum_pattern", node)?;
+        SyntaxError::expect_syntax_node("enum_pattern", node)?;
 
         let enum_name_node = node.child(0).unwrap();
         let name = Identifier::from_syntax(enum_name_node, source, context)?;
diff --git a/src/abstract_tree/expression.rs b/src/abstract_tree/expression.rs
index 775bb19..5f400ed 100644
--- a/src/abstract_tree/expression.rs
+++ b/src/abstract_tree/expression.rs
@@ -30,7 +30,7 @@ impl AbstractTree for Expression {
         source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "expression", node)?;
+        SyntaxError::expect_syntax_node("expression", node)?;
 
         let child = if node.child(0).unwrap().is_named() {
             node.child(0).unwrap()
@@ -56,8 +56,7 @@ impl AbstractTree for Expression {
                     expected: "value, identifier, index, math, logic, function call, as or command"
                         .to_string(),
                     actual: child.kind().to_string(),
-                    location: child.start_position(),
-                    relevant_source: source[child.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/for.rs b/src/abstract_tree/for.rs
index d82e6ae..5d32937 100644
--- a/src/abstract_tree/for.rs
+++ b/src/abstract_tree/for.rs
@@ -22,7 +22,7 @@ pub struct For {
 
 impl AbstractTree for For {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "for", node)?;
+        SyntaxError::expect_syntax_node("for", node)?;
 
         let for_node = node.child(0).unwrap();
         let is_async = match for_node.kind() {
@@ -32,8 +32,7 @@ impl AbstractTree for For {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "for or async for".to_string(),
                     actual: for_node.kind().to_string(),
-                    location: for_node.start_position(),
-                    relevant_source: source[for_node.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/function_call.rs b/src/abstract_tree/function_call.rs
index 8561b5d..74b897c 100644
--- a/src/abstract_tree/function_call.rs
+++ b/src/abstract_tree/function_call.rs
@@ -32,7 +32,7 @@ impl FunctionCall {
 
 impl AbstractTree for FunctionCall {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "function_call", node)?;
+        SyntaxError::expect_syntax_node("function_call", node)?;
 
         let function_node = node.child(0).unwrap();
         let function_expression = FunctionExpression::from_syntax(function_node, source, context)?;
diff --git a/src/abstract_tree/function_expression.rs b/src/abstract_tree/function_expression.rs
index e56e8b6..8cbb3da 100644
--- a/src/abstract_tree/function_expression.rs
+++ b/src/abstract_tree/function_expression.rs
@@ -16,7 +16,7 @@ pub enum FunctionExpression {
 
 impl AbstractTree for FunctionExpression {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "function_expression", node)?;
+        SyntaxError::expect_syntax_node("function_expression", node)?;
 
         let first_child = node.child(0).unwrap();
         let child = if first_child.is_named() {
@@ -39,8 +39,7 @@ impl AbstractTree for FunctionExpression {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "identifier, function call, value or index".to_string(),
                     actual: child.kind().to_string(),
-                    location: child.start_position(),
-                    relevant_source: source[child.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/function_node.rs b/src/abstract_tree/function_node.rs
index f836204..0d82809 100644
--- a/src/abstract_tree/function_node.rs
+++ b/src/abstract_tree/function_node.rs
@@ -53,7 +53,7 @@ impl FunctionNode {
 
 impl AbstractTree for FunctionNode {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "function", node)?;
+        SyntaxError::expect_syntax_node("function", node)?;
 
         let child_count = node.child_count();
         let mut parameters = Vec::new();
diff --git a/src/abstract_tree/identifier.rs b/src/abstract_tree/identifier.rs
index 87700eb..87f4db4 100644
--- a/src/abstract_tree/identifier.rs
+++ b/src/abstract_tree/identifier.rs
@@ -50,7 +50,7 @@ impl AbstractTree for Identifier {
         source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "identifier", node)?;
+        SyntaxError::expect_syntax_node("identifier", node)?;
 
         let text = &source[node.byte_range()];
 
diff --git a/src/abstract_tree/index.rs b/src/abstract_tree/index.rs
index 0fdd5ed..ac564af 100644
--- a/src/abstract_tree/index.rs
+++ b/src/abstract_tree/index.rs
@@ -18,7 +18,7 @@ pub struct Index {
 
 impl AbstractTree for Index {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "index", node)?;
+        SyntaxError::expect_syntax_node("index", node)?;
 
         let collection_node = node.child(0).unwrap();
         let collection = IndexExpression::from_syntax(collection_node, source, context)?;
diff --git a/src/abstract_tree/index_assignment.rs b/src/abstract_tree/index_assignment.rs
index 4bfe767..b2ba926 100644
--- a/src/abstract_tree/index_assignment.rs
+++ b/src/abstract_tree/index_assignment.rs
@@ -15,7 +15,7 @@ pub struct IndexAssignment {
 
 impl AbstractTree for IndexAssignment {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "index_assignment", node)?;
+        SyntaxError::expect_syntax_node("index_assignment", node)?;
 
         let index_node = node.child(0).unwrap();
         let index = Index::from_syntax(index_node, source, context)?;
diff --git a/src/abstract_tree/index_expression.rs b/src/abstract_tree/index_expression.rs
index 7b4ee63..4958140 100644
--- a/src/abstract_tree/index_expression.rs
+++ b/src/abstract_tree/index_expression.rs
@@ -16,7 +16,7 @@ pub enum IndexExpression {
 
 impl AbstractTree for IndexExpression {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "index_expression", node)?;
+        SyntaxError::expect_syntax_node("index_expression", node)?;
 
         let first_child = node.child(0).unwrap();
         let child = if first_child.is_named() {
@@ -40,8 +40,7 @@ impl AbstractTree for IndexExpression {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "value, identifier, index or function call".to_string(),
                     actual: child.kind().to_string(),
-                    location: child.start_position(),
-                    relevant_source: source[child.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/logic.rs b/src/abstract_tree/logic.rs
index abd9e00..5c7777c 100644
--- a/src/abstract_tree/logic.rs
+++ b/src/abstract_tree/logic.rs
@@ -15,7 +15,7 @@ pub struct Logic {
 
 impl AbstractTree for Logic {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "logic", node)?;
+        SyntaxError::expect_syntax_node("logic", node)?;
 
         let first_node = node.child(0).unwrap();
         let (left_node, operator_node, right_node) = {
diff --git a/src/abstract_tree/logic_operator.rs b/src/abstract_tree/logic_operator.rs
index 4d80b68..b271142 100644
--- a/src/abstract_tree/logic_operator.rs
+++ b/src/abstract_tree/logic_operator.rs
@@ -20,10 +20,10 @@ pub enum LogicOperator {
 impl AbstractTree for LogicOperator {
     fn from_syntax(
         node: SyntaxNode,
-        source: &str,
+        _source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "logic_operator", node)?;
+        SyntaxError::expect_syntax_node("logic_operator", node)?;
 
         let operator_node = node.child(0).unwrap();
         let operator = match operator_node.kind() {
@@ -39,8 +39,7 @@ impl AbstractTree for LogicOperator {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "==, !=, &&, ||, >, <, >= or <=".to_string(),
                     actual: operator_node.kind().to_string(),
-                    location: operator_node.start_position(),
-                    relevant_source: source[operator_node.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/map_node.rs b/src/abstract_tree/map_node.rs
index 56c29f1..3ffa621 100644
--- a/src/abstract_tree/map_node.rs
+++ b/src/abstract_tree/map_node.rs
@@ -23,7 +23,7 @@ impl MapNode {
 
 impl AbstractTree for MapNode {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "map", node)?;
+        SyntaxError::expect_syntax_node("map", node)?;
 
         let mut properties = BTreeMap::new();
         let mut current_identifier = None;
diff --git a/src/abstract_tree/match.rs b/src/abstract_tree/match.rs
index 681e897..aaf77fa 100644
--- a/src/abstract_tree/match.rs
+++ b/src/abstract_tree/match.rs
@@ -20,7 +20,7 @@ pub struct Match {
 
 impl AbstractTree for Match {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "match", node)?;
+        SyntaxError::expect_syntax_node("match", node)?;
 
         let matcher_node = node.child(1).unwrap();
         let matcher = Expression::from_syntax(matcher_node, source, context)?;
diff --git a/src/abstract_tree/match_pattern.rs b/src/abstract_tree/match_pattern.rs
index 90c9362..f63248c 100644
--- a/src/abstract_tree/match_pattern.rs
+++ b/src/abstract_tree/match_pattern.rs
@@ -15,7 +15,7 @@ pub enum MatchPattern {
 
 impl AbstractTree for MatchPattern {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "match_pattern", node)?;
+        SyntaxError::expect_syntax_node("match_pattern", node)?;
 
         let child = node.child(0).unwrap();
         let pattern = match child.kind() {
@@ -28,8 +28,7 @@ impl AbstractTree for MatchPattern {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "enum pattern or value".to_string(),
                     actual: child.kind().to_string(),
-                    location: child.start_position(),
-                    relevant_source: source[child.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/math.rs b/src/abstract_tree/math.rs
index ccc2aa1..0f24230 100644
--- a/src/abstract_tree/math.rs
+++ b/src/abstract_tree/math.rs
@@ -18,7 +18,7 @@ pub struct Math {
 
 impl AbstractTree for Math {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "math", node)?;
+        SyntaxError::expect_syntax_node("math", node)?;
 
         let left_node = node.child(0).unwrap();
         let left = Expression::from_syntax(left_node, source, context)?;
diff --git a/src/abstract_tree/math_operator.rs b/src/abstract_tree/math_operator.rs
index 89d8290..2d6f1d1 100644
--- a/src/abstract_tree/math_operator.rs
+++ b/src/abstract_tree/math_operator.rs
@@ -17,7 +17,7 @@ pub enum MathOperator {
 impl AbstractTree for MathOperator {
     fn from_syntax(
         node: SyntaxNode,
-        source: &str,
+        _source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
         let operator_node = node.child(0).unwrap();
@@ -31,8 +31,7 @@ impl AbstractTree for MathOperator {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "+, -, *, / or %".to_string(),
                     actual: operator_node.kind().to_string(),
-                    location: operator_node.start_position(),
-                    relevant_source: source[operator_node.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/mod.rs b/src/abstract_tree/mod.rs
index 297dc6f..4a2ea37 100644
--- a/src/abstract_tree/mod.rs
+++ b/src/abstract_tree/mod.rs
@@ -85,7 +85,7 @@ pub struct Root {
 // top-level statements in the tree.
 impl AbstractTree for Root {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "root", node)?;
+        SyntaxError::expect_syntax_node("root", node)?;
 
         let statement_count = node.child_count();
         let mut statements = Vec::with_capacity(statement_count);
diff --git a/src/abstract_tree/statement.rs b/src/abstract_tree/statement.rs
index 7f85146..010463a 100644
--- a/src/abstract_tree/statement.rs
+++ b/src/abstract_tree/statement.rs
@@ -25,7 +25,7 @@ impl AbstractTree for Statement {
         source: &str,
         _context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "statement", node)?;
+        SyntaxError::expect_syntax_node("statement", node)?;
 
         let first_child = node.child(0).unwrap();
         let mut is_return = first_child.kind() == "return";
@@ -83,7 +83,7 @@ enum StatementKind {
 
 impl AbstractTree for StatementKind {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "statement_kind", node)?;
+        SyntaxError::expect_syntax_node("statement_kind", node)?;
 
         let child = node.child(0).unwrap();
 
@@ -119,8 +119,7 @@ impl AbstractTree for StatementKind {
                 expected:
                     "assignment, index assignment, expression, type_definition, block, return, if...else, while, for or match".to_string(),
                 actual: child.kind().to_string(),
-                location: child.start_position(),
-                relevant_source: source[child.byte_range()].to_string(),
+                position: node.range().into(),
             }),
         }
     }
diff --git a/src/abstract_tree/struct_definition.rs b/src/abstract_tree/struct_definition.rs
index 4284bd7..9b43772 100644
--- a/src/abstract_tree/struct_definition.rs
+++ b/src/abstract_tree/struct_definition.rs
@@ -44,7 +44,7 @@ impl StructDefinition {
 
 impl AbstractTree for StructDefinition {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "struct_definition", node)?;
+        SyntaxError::expect_syntax_node("struct_definition", node)?;
 
         let name_node = node.child(1).unwrap();
         let name = Identifier::from_syntax(name_node, source, context)?;
diff --git a/src/abstract_tree/type.rs b/src/abstract_tree/type.rs
index 6334e43..f438d45 100644
--- a/src/abstract_tree/type.rs
+++ b/src/abstract_tree/type.rs
@@ -147,7 +147,7 @@ impl AbstractTree for Type {
         _source: &str,
         context: &Context,
     ) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(_source, "type", node)?;
+        SyntaxError::expect_syntax_node("type", node)?;
 
         let type_node = node.child(0).unwrap();
 
@@ -207,8 +207,7 @@ impl AbstractTree for Type {
                 return Err(SyntaxError::UnexpectedSyntaxNode {
                     expected: "any, bool, float, int, num, str, custom type, (, [ or {".to_string(),
                     actual: type_node.kind().to_string(),
-                    location: type_node.start_position(),
-                    relevant_source: _source[type_node.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/type_definition.rs b/src/abstract_tree/type_definition.rs
index ea3e68b..8036508 100644
--- a/src/abstract_tree/type_definition.rs
+++ b/src/abstract_tree/type_definition.rs
@@ -23,7 +23,7 @@ impl TypeDefinition {
 
 impl AbstractTree for TypeDefinition {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "type_definition", node)?;
+        SyntaxError::expect_syntax_node("type_definition", node)?;
 
         let child = node.child(0).unwrap();
 
@@ -37,8 +37,7 @@ impl AbstractTree for TypeDefinition {
             _ => Err(SyntaxError::UnexpectedSyntaxNode {
                 expected: "enum or struct definition".to_string(),
                 actual: child.kind().to_string(),
-                location: child.start_position(),
-                relevant_source: source[child.byte_range()].to_string(),
+                position: node.range().into(),
             }),
         }
     }
diff --git a/src/abstract_tree/type_specification.rs b/src/abstract_tree/type_specification.rs
index 5354069..108c230 100644
--- a/src/abstract_tree/type_specification.rs
+++ b/src/abstract_tree/type_specification.rs
@@ -26,7 +26,7 @@ impl TypeSpecification {
 
 impl AbstractTree for TypeSpecification {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "type_specification", node)?;
+        SyntaxError::expect_syntax_node("type_specification", node)?;
 
         let type_node = node.child(1).unwrap();
         let r#type = Type::from_syntax(type_node, source, context)?;
diff --git a/src/abstract_tree/value_node.rs b/src/abstract_tree/value_node.rs
index 5b410a3..76c3228 100644
--- a/src/abstract_tree/value_node.rs
+++ b/src/abstract_tree/value_node.rs
@@ -32,7 +32,7 @@ pub enum ValueNode {
 
 impl AbstractTree for ValueNode {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "value", node)?;
+        SyntaxError::expect_syntax_node("value", node)?;
 
         let child = node.child(0).unwrap();
         let value_node = match child.kind() {
@@ -108,8 +108,7 @@ impl AbstractTree for ValueNode {
                         "string, integer, float, boolean, range, list, map, option, function, struct or enum"
                             .to_string(),
                     actual: child.kind().to_string(),
-                    location: child.start_position(),
-                    relevant_source: source[child.byte_range()].to_string(),
+                    position: node.range().into(),
                 })
             }
         };
diff --git a/src/abstract_tree/while.rs b/src/abstract_tree/while.rs
index ed2b238..07ba81c 100644
--- a/src/abstract_tree/while.rs
+++ b/src/abstract_tree/while.rs
@@ -16,7 +16,7 @@ pub struct While {
 
 impl AbstractTree for While {
     fn from_syntax(node: SyntaxNode, source: &str, context: &Context) -> Result<Self, SyntaxError> {
-        SyntaxError::expect_syntax_node(source, "while", node)?;
+        SyntaxError::expect_syntax_node("while", node)?;
 
         let expression_node = node.child(1).unwrap();
         let expression = Expression::from_syntax(expression_node, source, context)?;
diff --git a/src/error/mod.rs b/src/error/mod.rs
index ef49a1f..9dd7a5c 100644
--- a/src/error/mod.rs
+++ b/src/error/mod.rs
@@ -7,6 +7,7 @@ pub(crate) mod rw_lock_error;
 mod syntax_error;
 mod validation_error;
 
+use colored::Colorize;
 use lyneate::Report;
 pub use runtime_error::RuntimeError;
 pub use syntax_error::SyntaxError;
@@ -35,15 +36,33 @@ impl Error {
     /// The `source` argument should be the full source code document that was
     /// used to create this error.
     pub fn create_report(&self, source: &str) -> String {
-        let markers = if let Error::Syntax(SyntaxError::InvalidSource { source, position }) = self {
+        let markers = if let Error::Syntax(SyntaxError::InvalidSource { position }) = self {
             vec![(
                 position.start_byte..position.end_byte,
                 format!(
                     "Invalid syntax from ({}, {}) to ({}, {}).",
                     position.start_row,
                     position.start_column,
+                    position.end_row,
                     position.end_column,
-                    position.end_row
+                ),
+                (255, 200, 100),
+            )]
+        } else if let Error::Syntax(SyntaxError::UnexpectedSyntaxNode {
+            expected,
+            actual,
+            position,
+        }) = self
+        {
+            vec![(
+                position.start_byte..position.end_byte,
+                format!(
+                    "Unexpected syntax from ({}, {}) to ({}, {}). {}",
+                    position.start_row,
+                    position.start_column,
+                    position.end_row,
+                    position.end_column,
+                    format!("Expected {} but got {}.", expected, actual).dimmed(),
                 ),
                 (255, 100, 100),
             )]
diff --git a/src/error/syntax_error.rs b/src/error/syntax_error.rs
index 99527e0..c30a2d4 100644
--- a/src/error/syntax_error.rs
+++ b/src/error/syntax_error.rs
@@ -1,7 +1,7 @@
 use std::fmt::{self, Display, Formatter};
 
 use serde::{Deserialize, Serialize};
-use tree_sitter::{Node as SyntaxNode, Point};
+use tree_sitter::Node as SyntaxNode;
 
 use crate::SourcePosition;
 
@@ -11,7 +11,6 @@ use super::rw_lock_error::RwLockError;
 pub enum SyntaxError {
     /// Invalid user input.
     InvalidSource {
-        source: String,
         position: SourcePosition,
     },
 
@@ -20,35 +19,25 @@ pub enum SyntaxError {
     UnexpectedSyntaxNode {
         expected: String,
         actual: String,
-
-        #[serde(skip)]
-        location: Point,
-
-        relevant_source: String,
+        position: SourcePosition,
     },
 }
 
 impl SyntaxError {
-    pub fn expect_syntax_node(
-        source: &str,
-        expected: &str,
-        actual: SyntaxNode,
-    ) -> Result<(), SyntaxError> {
+    pub fn expect_syntax_node(expected: &str, actual: SyntaxNode) -> Result<(), SyntaxError> {
         log::info!("Converting {} to abstract node", actual.kind());
 
         if expected == actual.kind() {
             Ok(())
         } else if actual.is_error() {
             Err(SyntaxError::InvalidSource {
-                source: source[actual.byte_range()].to_string(),
                 position: SourcePosition::from(actual.range()),
             })
         } else {
             Err(SyntaxError::UnexpectedSyntaxNode {
                 expected: expected.to_string(),
                 actual: actual.kind().to_string(),
-                location: actual.start_position(),
-                relevant_source: source[actual.byte_range()].to_string(),
+                position: SourcePosition::from(actual.range()),
             })
         }
     }
@@ -61,7 +50,7 @@ impl From<RwLockError> for SyntaxError {
 }
 
 impl Display for SyntaxError {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+    fn fmt(&self, _f: &mut Formatter<'_>) -> fmt::Result {
         todo!()
     }
 }
diff --git a/src/interpret.rs b/src/interpret.rs
index 19a03a7..de75b3d 100644
--- a/src/interpret.rs
+++ b/src/interpret.rs
@@ -35,11 +35,9 @@
 //!     Ok(Value::Integer(10))
 //! );
 //! ```
-use tree_sitter::{Node as SyntaxNode, Parser, Tree as SyntaxTree, TreeCursor};
+use tree_sitter::{Parser, Tree as SyntaxTree};
 
-use crate::{
-    error::SyntaxError, language, AbstractTree, Context, Error, Format, Root, SourcePosition, Value,
-};
+use crate::{language, AbstractTree, Context, Error, Format, Root, Value};
 
 /// Interpret the given source code. Returns the value of last statement or the
 /// first error encountered.