Implement eval check for ECMAScript code (#4788)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/parser/js/byte-code.h

@@ -1004,12 +1004,13 @@ typedef enum
   CBC_SCRIPT_USER_VALUE_IS_OBJECT = (1 << 1), /**< user value is object */
   CBC_SCRIPT_HAS_FUNCTION_ARGUMENTS = (1 << 2), /**< script is a function with arguments source code */
   CBC_SCRIPT_HAS_IMPORT_META = (1 << 3), /**< script is a module with import.meta object */
+  CBC_SCRIPT_IS_EVAL_CODE = (1 << 4), /**< script is compiled by eval like (eval, new Function, etc.) expression */
 } cbc_script_type;
 
 /**
  * Value for increasing or decreasing the script reference counter.
  */
-#define CBC_SCRIPT_REF_ONE 0x10
+#define CBC_SCRIPT_REF_ONE 0x20
 
 /**
  * Maximum value of script reference counter.

jerry-core/parser/js/js-parser.c

@@ -2108,6 +2108,11 @@ parser_parse_source (void *source_p, /**< source code */
 
     CBC_SCRIPT_SET_TYPE (context.script_p, context.user_value, CBC_SCRIPT_REF_ONE);
 
+    if (context.global_status_flags & (ECMA_PARSE_EVAL | ECMA_PARSE_HAS_ARGUMENT_LIST_VALUE))
+    {
+      context.script_p->refs_and_type |= CBC_SCRIPT_IS_EVAL_CODE;
+    }
+
 #if JERRY_BUILTIN_REALMS
     context.script_p->realm_p = (ecma_object_t *) JERRY_CONTEXT (global_object_p);
 #endif /* JERRY_BUILTIN_REALMS */