Add API function to check if the specified feature is enabled. (#1465)

JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com

jerry-core/jerry-api.h

@@ -68,6 +68,18 @@ typedef enum
   JERRY_ERROR_URI        /**< URIError */
 } jerry_error_t;
 
+typedef enum
+{
+  JERRY_FEATURE_ERROR_MESSAGES, /**< error messages */
+  JERRY_FEATURE_CPOINTER_32_BIT, /**< 32 bit compressed pointers */
+  JERRY_FEATURE_MEM_STATS, /**< memory statistics */
+  JERRY_FEATURE_PARSER_DUMP, /**< parser byte-code dumps */
+  JERRY_FEATURE_REGEXP_DUMP, /**< regexp byte-code dumps */
+  JERRY_FEATURE_SNAPSHOT_SAVE, /**< saving snapshot files */
+  JERRY_FEATURE_SNAPSHOT_EXEC, /**< executing snapshot files */
+  JERRY_FEATURE__COUNT /**< number of features. NOTE: must be at the end of the list */
+} jerry_feature_t;
+
 /**
  * Jerry's char value
  */
@@ -191,6 +203,11 @@ bool jerry_value_is_object (const jerry_value_t);
 bool jerry_value_is_string (const jerry_value_t);
 bool jerry_value_is_undefined (const jerry_value_t);
 
+/**
+ * Checker function of whether the specified compile feature is enabled
+ */
+bool jerry_is_feature_enabled (const jerry_feature_t);
+
 /**
  * Error flag manipulation functions
  */

jerry-core/jerry.c

@@ -518,6 +518,41 @@ jerry_value_is_undefined (const jerry_value_t value) /**< api value */
   return ecma_is_value_undefined (value);
 } /* jerry_value_is_undefined */
 
+/**
+ * Check if the specified feature is enabled.
+ *
+ * @return true  - if the specified feature is enabled,
+ *         false - otherwise.
+ */
+bool jerry_is_feature_enabled (const jerry_feature_t feature)
+{
+  JERRY_ASSERT (feature < JERRY_FEATURE__COUNT);
+
+  return (false
+#ifdef JERRY_ENABLE_ERROR_MESSAGES
+          || feature == JERRY_FEATURE_ERROR_MESSAGES
+#endif /* JERRY_ENABLE_ERROR_MESSAGES */
+#ifdef JERRY_CPOINTER_32_BIT
+          || feature == JERRY_FEATURE_CPOINTER_32_BIT
+#endif /* JERRY_CPOINTER_32_BIT */
+#ifdef JMEM_STATS
+          || feature == JERRY_FEATURE_MEM_STATS
+#endif /* JMEM_STATS */
+#ifdef PARSER_DUMP_BYTE_CODE
+          || feature == JERRY_FEATURE_PARSER_DUMP
+#endif /* PARSER_DUMP_BYTE_CODE */
+#ifdef REGEXP_DUMP_BYTE_CODE
+          || feature == JERRY_FEATURE_REGEXP_DUMP
+#endif /* REGEXP_DUMP_BYTE_CODE */
+#ifdef JERRY_ENABLE_SNAPSHOT_SAVE
+          || feature == JERRY_FEATURE_SNAPSHOT_SAVE
+#endif /* JERRY_ENABLE_SNAPSHOT_SAVE */
+#ifdef JERRY_ENABLE_SNAPSHOT_EXEC
+          || feature == JERRY_FEATURE_SNAPSHOT_EXEC
+#endif /* JERRY_ENABLE_SNAPSHOT_EXEC */
+          );
+} /* jerry_is_feature_enabled */
+
 /**
  * Check if the specified value is an error value.
  *