Some work

lc.h

@@ -1,6 +1,8 @@
 #ifndef INCLUDED_TERM_H
 #define INCLUDED_TERM_H
 
+#include "token.h"
+
 #include <stddef.h>
 
 typedef enum {
@@ -14,17 +16,22 @@ struct _LambdaTerm {
     LambdaTermType type;
     union {
         struct {
-            char name;
+            char *name;
+            size_t name_len;
         } v;
         struct {
-            char argument;
+            char *arg;
+            size_t arg_len;
             LambdaTerm *body;
         } l;
         struct {
-            char function;
-            LambdaTerm *argument;
-        };
+            LambdaTerm *func;
+            LambdaTerm *arg;
+        } a;
     };
 };
 
+LambdaTerm *read_lambda_term(TokenStream *restrict stream,
+                             ParseError *restrict err_out);
+
 #endif