Parse.

src/grammar.y

@@ -1,6 +1,8 @@
 %{
+    #include <stdio.h>
     #include "../../src/include/ast.h"
     #include "../../src/include/lexer.h"
+    
     int yylex(void);
     void yyerror(char const*);
 %}
@@ -15,6 +17,8 @@
     AST* ast;
 }
 
+%define parse.error verbose
+
 %token<intval> NUM
 %token<strval> CALL
 %token PLUS
@@ -22,6 +26,17 @@
 
 %%
 
+input:
+    %empty
+    | input line
+    ;
+
+
+line:
+    '\n'
+    | exp '\n' { printf("it worked. 👍\n"); }
+    ;
+
 exp: 
     NUM { $$ = ast_init(AST_TYPE_NUM, ast_type_num_init($1)); }
     | NUM PLUS NUM {

src/include/util.h

@@ -77,7 +77,7 @@
     printf(COL_BWHI "%s ]\n" COL_RESET, INDENT_spacing->buf);
 
 // End an indent block.
-#define INDENT_END dstr_destroy(INDENT_spacing);
+#define INDENT_END printf(COL_RESET); dstr_destroy(INDENT_spacing);
 
 // Allocate a pointer with a type.
 #define talloc(T, X) T* X = malloc(sizeof(T));

src/lexer.c

@@ -172,4 +172,4 @@ int yylex() {
 
     return 0;
 }
-void yyerror(char const* s) { fprintf(stderr, "%s\n", s); }
+void yyerror(char const* s) { fprintf(stderr, "Syntax error:\n%s\n", s); }