diff --git a/schala-lang/language/src/lib.rs b/schala-lang/language/src/lib.rs
index 93a10b8..5258dc2 100644
--- a/schala-lang/language/src/lib.rs
+++ b/schala-lang/language/src/lib.rs
@@ -29,6 +29,7 @@ macro_rules! bx {
 }
 
 mod util;
+mod source_map;
 mod builtin;
 mod tokenizing;
 mod ast;
diff --git a/schala-lang/language/src/source_map.rs b/schala-lang/language/src/source_map.rs
new file mode 100644
index 0000000..211673f
--- /dev/null
+++ b/schala-lang/language/src/source_map.rs
@@ -0,0 +1,13 @@
+
+pub struct SourceMap<T> {
+  node: T,
+  data: SourceData
+}
+
+struct SourceData {
+  line_number: usize,
+  char_idx: usize
+}
+
+
+