fix: cast warnings.

Author: divy9881

casbin/model/Assertion.h

@@ -7,6 +7,7 @@ enum policy_op{
     policy_add,
     policy_remove
 };
+typedef enum policy_op policy_op;
 
 // Assertion represents an expression in a section of the model.
 // For example: r = sub, obj, act
@@ -17,7 +18,7 @@ class Assertion {
         string value;
         vector<string> tokens;
         vector<vector<string>> policy;
-        RoleManager *rm;
+        RoleManager* rm;
 
         void BuildIncrementalRoleLinks(RoleManager* rm, policy_op op, vector<vector<string>> rules);
 

casbin/util/built_in_functions.cpp

@@ -53,8 +53,8 @@ ReturnType KeyMatch2(Scope scope) {
             break;
         }
         if(key1_arr[i] != key2_arr[i]){
-            int index1 = key2_arr[i].find("*");
-            int index2 = key2_arr[i].find(":");
+            int index1 = int(key2_arr[i].find("*"));
+            int index2 = int(key2_arr[i].find(":"));
             if(index1 != string::npos){
                 if(index1==0){
                     res = true;
@@ -103,9 +103,9 @@ ReturnType KeyMatch3(Scope scope) {
             break;
         }
         if(key1_arr[i] != key2_arr[i]){
-            int index1 = key2_arr[i].find("*");
-            int index2 = key2_arr[i].find("{");
-            int index3 = key2_arr[i].find("}");
+            int index1 = int(key2_arr[i].find("*"));
+            int index2 = int(key2_arr[i].find("{"));
+            int index3 = int(key2_arr[i].find("}"));
             if(index1 != string::npos){
                 if(index1==0){
                     res = true;