refactor: nud and led have differetn responasblires

So now nud and led do what they were supposed to do i guess, now i
thinks is just adjusting infix and postfix and all bd funcions to act on
operator instead.

include/parser.h

@@ -38,6 +38,7 @@ typedef enum {
     PARSER_UNMATCHED_PAREN,
     PARSER_OUT_OF_MEMORY,
     PARSER_INVALID_TOKENIZE,
+    PARSER_UNEXMECTED_EOF,
 } ParserErr;
 
 typedef struct {
@@ -76,8 +77,8 @@ typedef struct {
 } ParserU8Result;
 
 Node token_to_node(Token token);
-NodeResult nud(Token token); // Null denotation
-NodeResult led(Token token); // Left denotation
+TreeResult nud(ArraySlice *slice, Arena *arena, Token token); // Null denotation
+TreeResult led(ArraySlice *slice, Arena *arena, Node *left, Token token); // Left denotation
 
 ParserU8Result prefix_rbp(Node node);
 ParserU8Result postfix_lbp(Node node);