Converting ecma_value_t to class that is used for on-stack storage of ecma-values.

Original ecma_value_t is renamed to ecma_value_packed_t and is used for on-heap storage. Copy and move constructors, move assignment operator of ecma_value_t are not created. New ecma-value return convention is introduced: ecma-values are now returned through ecma_value_t &ret_val argument.
2015-01-30 22:52:43 +03:00
parent 4cd7f96acc
commit 00afd4e0e2
70 changed files with 1192 additions and 976 deletions
@@ -0,0 +1,67 @@
+/* Copyright 2015 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mem-allocator.h"
+
+#ifndef ECMA_COMPRESSED_POINTERS_H
+#define ECMA_COMPRESSED_POINTERS_H
+
+/** \addtogroup ecma ECMA
+ * @{
+ *
+ * \addtogroup ecmacompressedpointers Helpers for operations with compressed heap pointers
+ * @{
+ */
+
+/**
+ * Get value of pointer from specified non-null compressed pointer field.
+ */
+#define ECMA_GET_NON_NULL_POINTER(type, field) \
+  ((type *) mem_decompress_pointer (field))
+
+/**
+ * Get value of pointer from specified compressed pointer field.
+ */
+#define ECMA_GET_POINTER(type, field) \
+  (((unlikely (field == ECMA_NULL_POINTER)) ? NULL : ECMA_GET_NON_NULL_POINTER (type, field)))
+
+/**
+ * Set value of non-null compressed pointer field so that it will correspond
+ * to specified non_compressed_pointer.
+ */
+#define ECMA_SET_NON_NULL_POINTER(field, non_compressed_pointer) \
+  (field) = (mem_compress_pointer (non_compressed_pointer) & ((1u << ECMA_POINTER_FIELD_WIDTH) - 1))
+
+/**
+ * Set value of compressed pointer field so that it will correspond
+ * to specified non_compressed_pointer.
+ */
+#define ECMA_SET_POINTER(field, non_compressed_pointer) \
+  do \
+  { \
+    auto __temp_pointer = non_compressed_pointer; \
+    non_compressed_pointer = __temp_pointer; \
+  } while (0); \
+  \
+  (field) = (unlikely ((non_compressed_pointer) == NULL) ? ECMA_NULL_POINTER \
+                                                         : (mem_compress_pointer (non_compressed_pointer) \
+                                                            & ((1u << ECMA_POINTER_FIELD_WIDTH) - 1)))
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* ECMA_COMPRESSED_POINTERS_H */