1 files changed, 30 insertions, 7 deletions

diff --git a/inc/treeify.h b/inc/treeify.h
index bc8a64d..1e2d3e5 100644
--- a/inc/treeify.h
+++ b/inc/treeify.h
@@ -6,6 +6,7 @@
 enum node_type {
 	EXPRESSION,
 	DECLARATION,
+	DEFINITION,
 };
 
 /**
@@ -31,33 +32,55 @@ struct node_expression_parameter {
 	} data;
 };
 
-// *(f x y)*
+// (*f x y*)
 struct node_expression {
 	struct node_expression_identifier *callee; // f
 	struct node_expression_parameter *parameters; // x y
+	size_t parameter_count;
 };
 
 /**
  * Declarations
  */
 
-// *u32:f* u32:x u32:y = (...)
+// *f* u32 u32 -> *u32*
 struct node_declaration_callee {
 	ctx_string name; // f
 	ctx_string type; // u32
 };
 
-// u32:f *u32:x* *u32:y* = (...)
+// f *u32* *u32* -> u32
 struct node_declaration_parameter {
-	ctx_string name; // x or y
 	ctx_string type; // u32
 };
 
-// *u32:f u32:x u32:y* = (...) OR
-// *u32:a* = ...
+// *f u32 u32 -> u32*
 struct node_declaration {
 	struct node_declaration_callee callee; // f
-	struct node_declaration_parameter *parameters; // x y OR NULL
+	struct node_declaration_parameter *parameters; // u32 u32 OR NULL
+	size_t parameter_count;
+};
+
+/**
+ * Definitions
+ */
+
+// *f* a b : expr
+struct node_definition_callee {
+	ctx_string name;
+};
+
+// f *a* *b* : expr
+struct node_definition_parameter {
+	ctx_string name; // u32
+};
+
+// *f a b : expr*
+struct node_definition {
+	struct node_definition_callee callee; // f
+	struct node_definition_parameter *parameters; // a b
+	size_t parameter_count;
+	struct node_expression expression; // expr
 };
 
 struct node {