3 files changed, 14 insertions, 7 deletions

diff --git a/src/lexer.c b/src/lexer.c
index 74cc298..5d334bd 100644
--- a/src/lexer.c
+++ b/src/lexer.c
@@ -1,11 +1,14 @@
-#include "include/lexer.h" 
-#include "include/token.h"
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
 #include <stdio.h>
 
 
+#include "include/log.h"
+#include "include/lexer.h" 
+#include "include/token.h"
+
+
 lexer_t* lexer_init(char* content) {
    lexer_t* lexer = calloc(1, sizeof(struct LEXER_STRUC));
 
@@ -121,7 +124,7 @@ token_t* lexer_get_next_token(lexer_t* lexer) {
              ); break;
          case '\0': return token_init(TOKEN_EOF, lexer_get_c_as_string(lexer)); break;
          default:
-            fputs("Unrecognized token.", stderr);
+            log_err("Unrecognized token");
             exit(1);
       }
    }
@@ -180,7 +183,7 @@ token_t* lexer_get_def_const(lexer_t* lexer) {
       lexer_next(lexer);
       return token_init(TOKEN_DEFINE_CONST, "=>");
    } else {
-      fputs("Unknown variable state.", stderr);
+      log_err("Unknown variable state.");
       exit(1);
    }
 }
@@ -193,7 +196,7 @@ token_t* lexer_get_def_var(lexer_t* lexer) {
    } else if (lexer_next(lexer), lexer->c == '-') {
       return lexer_get_def_mut(lexer); 
    } else {
-      fputs("Unknown variable state.", stderr);
+      log_err("Unknown variable state.");
       exit(1);
    }
 }
@@ -205,7 +208,7 @@ token_t* lexer_get_def_mut(lexer_t* lexer) {
       lexer_next(lexer);
       return token_init(TOKEN_DEFINE_MUT, "->");
    } else {
-      fputs("Unknown variable state.", stderr);
+      log_err("Unknown variable state.");
       exit(1);
    }
 }
diff --git a/src/main.c b/src/main.c
index 4b4944d..fa468a5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 
 
+#include "include/log.h"
 #include "include/lexer.h"
 #include "include/tree.h"
 
@@ -49,5 +50,7 @@ int main(int argc, char* argv[]) {
 
    lexer_destroy(lexer);
 
+   log_inf("Lexer destroyed.");
+
    return 0;
 }
diff --git a/src/parser.c b/src/parser.c
index a9ee6d5..2cc0d39 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -22,7 +22,7 @@ void parser_check_expect(parser_t* parser, int token_type) {
    if (parser->token->type == token_type) {
       parser->token = lexer_get_next_token(parser->lexer);
    } else {
-      printf("[ERRR] [%d]\n\tUnexpected token '%s' with type '%d'.", 
+      fprintf(stderr, "[ERRR] [%d]\n\tUnexpected token '%s' with type '%d'.", 
       parser->lexer->i, parser->token->value, parser->token->type);
 
       exit(1);
@@ -96,6 +96,7 @@ tree_t* parser_parse_var_def(parser_t* parser) {
    parser_check_expect(parser, TOKEN_KEYWORD);        // let
    char* var_name = parser->token->value;             // set variable name
    parser_check_expect(parser, TOKEN_KEYWORD);        // expect variable name & advance
+
    if (parser->token->type == TOKEN_DEFINE_CONST) {   // check either constant or mutable variable
       var_is_const = 1;
       parser_check_expect(parser, TOKEN_DEFINE_CONST);