start rewriting the parser to return with error messages so errors can be caught

src/parser/assignable/assign/assign.c

@@ -7,8 +7,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-ParsedValue *parse_assign(char *file, DArray *tokens, ParsedValue *assign_to,
-                          size_t *index) {
+ParsedValueReturn parse_assign(char *file, DArray *tokens,
+                               ParsedValue *assign_to, size_t *index) {
   Token *token = darray_get(tokens, *index);
   switch (assign_to->type) {
   case AST_IDENTIFIER:
@@ -24,6 +24,7 @@ ParsedValue *parse_assign(char *file, DArray *tokens, ParsedValue *assign_to,
                 "only use letters, digits, or _, and can't be keywords.\n",
                 file, token->line, token->column);
         exit(EXIT_FAILURE);
+        
       }
     }
     break;
@@ -35,19 +36,25 @@ ParsedValue *parse_assign(char *file, DArray *tokens, ParsedValue *assign_to,
   ParsedAssign *assign = checked_malloc(sizeof(ParsedAssign));
   assign->to = assign_to;
   assign->type = token->type;
+  ParsedValue *parsedValue = checked_malloc(sizeof(ParsedValue));
+  parsedValue->type = AST_ASSIGN;
+  parsedValue->data = assign;
   (*index)++;
   error_if_finished(file, tokens, index);
   token = darray_get(tokens, *index);
-  assign->from = parse_token(file, tokens, index, true);
+  ParsedValueReturn from = parse_token(file, tokens, index, true);
+  if (from.err.exists) {
+    free_parsed(parsedValue);
+    free(parsedValue);
+    return from;
+  }
+  assign->from = from.value;
   if (!assign->from) {
     fprintf(stderr, "%s:%zu:%zu error: syntax error\n", file, token->line,
             token->column);
     exit(EXIT_FAILURE);
   }
-  ParsedValue *parsedValue = checked_malloc(sizeof(ParsedValue));
-  parsedValue->type = AST_ASSIGN;
-  parsedValue->data = assign;
-  return parsedValue;
+  return (ParsedValueReturn){no_err, parsedValue};
 }
 
 void free_parse_assign(void *ptr) {

src/parser/assignable/assign/assign.h

@@ -9,8 +9,8 @@ typedef struct {
   ParsedValue * from;
 } ParsedAssign;
 
-ParsedValue *parse_assign(char*file, DArray *tokens,
-                          ParsedValue *assign_to, size_t *index);
+ParsedValueReturn parse_assign(char *file, DArray *tokens, ParsedValue *assign_to,
+                          size_t *index);
 
 void free_parse_assign(void*ptr);