[ES2015 profile]add TypedArray intrinsic object (#1507)

* add %TypedArray% intrinsic object
* implement Int8Array
* will implement other types and prototype functions
in the following patches.

JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com

Author: jiangzidong

jerry-core/ecma/base/ecma-gc.c

@@ -31,6 +31,10 @@
 #include "vm-defines.h"
 #include "vm-stack.h"
 
+#ifndef CONFIG_DISABLE_ARRAYBUFFER_BUILTIN
+#include "ecma-typedarray-object.h"
+#endif
+
 #define JERRY_INTERNAL
 #include "jerry-internal.h"
 
@@ -259,14 +263,35 @@ ecma_gc_mark (ecma_object_t *object_p) /**< object to mark from */
 
     switch (ecma_get_object_type (object_p))
     {
-      case ECMA_OBJECT_TYPE_ARGUMENTS:
+      case ECMA_OBJECT_TYPE_PSEUDO_ARRAY:
       {
         ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
 
-        ecma_object_t *lex_env_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_object_t,
-                                                                    ext_object_p->u.arguments.lex_env_cp);
+        switch (ext_object_p->u.pseudo_array.type)
+        {
+          case ECMA_PSEUDO_ARRAY_ARGUMENTS:
+          {
+            ecma_object_t *lex_env_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_object_t,
+                                                                        ext_object_p->u.pseudo_array.u2.lex_env_cp);
+
+            ecma_gc_set_object_visited (lex_env_p, true);
+            break;
+          }
+  #ifndef CONFIG_DISABLE_TYPEDARRAY_BUILTIN
+          case ECMA_PSEUDO_ARRAY_TYPEDARRAY:
+          case ECMA_PSEUDO_ARRAY_TYPEDARRAY_WITH_INFO:
+          {
+            ecma_gc_set_object_visited (ecma_typedarray_get_arraybuffer (object_p), true);
+            break;
+          }
+  #endif /* !CONFIG_DISABLE_TYPEDARRAY_BUILTIN */
+          default:
+          {
+            JERRY_UNREACHABLE ();
+            break;
+          }
+        }
 
-        ecma_gc_set_object_visited (lex_env_p, true);
         break;
       }
       case ECMA_OBJECT_TYPE_BOUND_FUNCTION:
@@ -503,25 +528,52 @@ ecma_gc_sweep (ecma_object_t *object_p) /**< object to free */
       return;
     }
 
-    if (object_type == ECMA_OBJECT_TYPE_ARGUMENTS)
+    if (object_type == ECMA_OBJECT_TYPE_PSEUDO_ARRAY)
     {
       ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
 
-      ecma_length_t formal_params_number = ext_object_p->u.arguments.length;
-      jmem_cpointer_t *arg_Literal_p = (jmem_cpointer_t *) (ext_object_p + 1);
-
-      for (ecma_length_t i = 0; i < formal_params_number; i++)
+      switch (ext_object_p->u.pseudo_array.type)
       {
-        if (arg_Literal_p[i] != JMEM_CP_NULL)
+        case ECMA_PSEUDO_ARRAY_ARGUMENTS:
+        {
+          ecma_length_t formal_params_number = ext_object_p->u.pseudo_array.u1.length;
+          jmem_cpointer_t *arg_Literal_p = (jmem_cpointer_t *) (ext_object_p + 1);
+
+          for (ecma_length_t i = 0; i < formal_params_number; i++)
+          {
+            if (arg_Literal_p[i] != JMEM_CP_NULL)
+            {
+              ecma_string_t *name_p = JMEM_CP_GET_NON_NULL_POINTER (ecma_string_t, arg_Literal_p[i]);
+              ecma_deref_ecma_string (name_p);
+            }
+          }
+
+          size_t formal_params_size = formal_params_number * sizeof (jmem_cpointer_t);
+          ecma_dealloc_extended_object (ext_object_p, sizeof (ecma_extended_object_t) + formal_params_size);
+          return;
+        }
+#ifndef CONFIG_DISABLE_TYPEDARRAY_BUILTIN
+        case ECMA_PSEUDO_ARRAY_TYPEDARRAY:
         {
-          ecma_string_t *name_p = JMEM_CP_GET_NON_NULL_POINTER (ecma_string_t, arg_Literal_p[i]);
-          ecma_deref_ecma_string (name_p);
+          ecma_dealloc_extended_object ((ecma_extended_object_t *) object_p,
+                                        sizeof (ecma_extended_object_t));
+          return;
+        }
+        case ECMA_PSEUDO_ARRAY_TYPEDARRAY_WITH_INFO:
+        {
+          ecma_dealloc_extended_object ((ecma_extended_object_t *) object_p,
+                                        sizeof (ecma_extended_typedarray_object_t));
+          return;
+        }
+#endif /* !CONFIG_DISABLE_TYPEDARRAY_BUILTIN */
+        default:
+        {
+          JERRY_UNREACHABLE ();
+          break;
         }
       }
 
-      size_t formal_params_size = formal_params_number * sizeof (jmem_cpointer_t);
-      ecma_dealloc_extended_object (ext_object_p, sizeof (ecma_extended_object_t) + formal_params_size);
-      return;
+      JERRY_UNREACHABLE ();
     }
 
     if (object_type == ECMA_OBJECT_TYPE_BOUND_FUNCTION)

jerry-core/ecma/base/ecma-globals.h

@@ -291,6 +291,11 @@ typedef enum
  */
 #define ECMA_PROPERTY_TYPE_NOT_FOUND ECMA_PROPERTY_TYPE_DELETED
 
+/**
+ * Type of property not found and no more searching in the proto chain.
+ */
+#define ECMA_PROPERTY_TYPE_NOT_FOUND_AND_STOP ECMA_PROPERTY_TYPE_HASHMAP
+
 /**
  * Property flag list (for ECMA_PROPERTY_TYPE_NAMEDDATA
  * and ECMA_PROPERTY_TYPE_NAMEDACCESSOR).
@@ -321,6 +326,12 @@ typedef enum
 #define ECMA_PROPERTY_CONFIGURABLE_WRITABLE \
   (ECMA_PROPERTY_FLAG_CONFIGURABLE | ECMA_PROPERTY_FLAG_WRITABLE)
 
+/**
+ * Property flags enumerable, writable.
+ */
+#define ECMA_PROPERTY_ENUMERABLE_WRITABLE \
+  (ECMA_PROPERTY_FLAG_ENUMERABLE | ECMA_PROPERTY_FLAG_WRITABLE)
+
 /**
  * No attributes can be changed for this property.
  */
@@ -488,7 +499,7 @@ typedef struct
 } ecma_extended_property_ref_t;
 
 /**
- * Option flags for ecma_op_object_get_property
+ * Option flags for ecma_op_object_get_property.
  */
 typedef enum
 {
@@ -498,7 +509,7 @@ typedef enum
 } ecma_property_get_option_bits_t;
 
 /**
- * Internal object types
+ * Internal object types.
  */
 typedef enum
 {
@@ -509,13 +520,25 @@ typedef enum
   ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION = 3, /**< External (host) function object */
   ECMA_OBJECT_TYPE_ARRAY = 4, /**< Array object (15.4) */
   ECMA_OBJECT_TYPE_BOUND_FUNCTION = 5, /**< Function objects (15.3), created through 15.3.4.5 routine */
-  ECMA_OBJECT_TYPE_ARGUMENTS = 6, /**< Arguments object (10.6) */
+  ECMA_OBJECT_TYPE_PSEUDO_ARRAY  = 6, /**< Array-like object, such as Arguments object (10.6) */
 
-  ECMA_OBJECT_TYPE__MAX = ECMA_OBJECT_TYPE_ARGUMENTS /**< maximum value */
+  ECMA_OBJECT_TYPE__MAX = ECMA_OBJECT_TYPE_PSEUDO_ARRAY /**< maximum value */
 } ecma_object_type_t;
 
 /**
- * Types of lexical environments
+ * Types of objects with class property.
+ */
+typedef enum
+{
+  ECMA_PSEUDO_ARRAY_ARGUMENTS = 0, /**< Arguments object (10.6) */
+  ECMA_PSEUDO_ARRAY_TYPEDARRAY = 1, /**< TypedArray which does NOT need extra space to store length and offset */
+  ECMA_PSEUDO_ARRAY_TYPEDARRAY_WITH_INFO = 2, /**< TypedArray which NEEDS extra space to store length and offset */
+
+  ECMA_PSEUDO_ARRAY__MAX = ECMA_PSEUDO_ARRAY_TYPEDARRAY_WITH_INFO /**< maximum value */
+} ecma_pseudo_array_type_t;
+
+/**
+ * Types of lexical environments.
  */
 typedef enum
 {
@@ -629,13 +652,14 @@ typedef struct
     struct
     {
       uint16_t class_id; /**< class id of the object */
+
       /*
        * Description of extra fields. These extra fields depends on the class_id.
        */
       union
       {
         ecma_value_t value; /**< value of the object (e.g. boolean, number, string, etc.) */
-        uint32_t length; /**< length related property (e.g. length of ArrayBuffer) */
+        uint32_t length; /**< length related property  (e.g. length of ArrayBuffer) */
       } u;
     } class_prop;
 
@@ -658,13 +682,24 @@ typedef struct
     } array;
 
     /*
-     * Description of arguments objects.
+     * Description of pseudo array objects.
      */
     struct
     {
-      ecma_value_t lex_env_cp; /**< lexical environment */
-      uint32_t length; /**< length of names */
-    } arguments;
+      uint8_t type; /**< pseudo array type, e.g. Arguments, TypedArray*/
+      uint8_t extra_info; /**< extra infomations about the object.
+                            *  e.g. element_width_shift for typed arrays */
+      union
+      {
+        uint16_t length; /**< for arguments: length of names */
+        uint16_t class_id; /**< for typedarray: the specific class name */
+      } u1;
+      union
+      {
+        ecma_value_t lex_env_cp; /**< for arguments: lexical environment */
+        ecma_value_t arraybuffer; /**< for typedarray: internal arraybuffer */
+      } u2;
+    } pseudo_array;
 
     /*
      * Description of bound function object.
@@ -1121,6 +1156,21 @@ typedef struct
 
 #endif /* !CONFIG_ECMA_LCACHE_DISABLE */
 
+#ifndef CONFIG_DISABLE_TYPEDARRAY_BUILTIN
+
+/**
+ * Some internal properties of TypedArray object.
+ * It is only used when the offset is not 0, and
+ * the array-length is not buffer-length / element_size.
+ */
+typedef struct
+{
+  ecma_extended_object_t extended_object; /**< extended object part */
+  ecma_length_t byte_offset; /**< the byteoffset of the above arraybuffer */
+  ecma_length_t array_length; /**< the array length */
+} ecma_extended_typedarray_object_t;
+
+#endif /* !CONFIG_DISABLE_TYPEDARRAY_BUILTIN */
 /**
  * @}
  * @}

jerry-core/ecma/builtin-objects/ecma-builtin-global.inc.h

@@ -174,6 +174,11 @@ OBJECT_VALUE (LIT_MAGIC_STRING_ARRAY_BUFFER_UL,
               ECMA_PROPERTY_CONFIGURABLE_WRITABLE)
 #endif /* !CONFIG_DISABLE_ARRAYBUFFER_BUILTIN */
 
+#ifndef CONFIG_DISABLE_TYPEDARRAY_BUILTIN
+OBJECT_VALUE (LIT_MAGIC_STRING_INT8_ARRAY_UL,
+              ECMA_BUILTIN_ID_INT8ARRAY,
+              ECMA_PROPERTY_CONFIGURABLE_WRITABLE)
+#endif /* !CONFIG_DISABLE_ARRAYBUFFER_BUILTIN */
 /* Routine properties:
  *  (property name, C routine name, arguments number or NON_FIXED, value of the routine's length property) */
 

jerry-core/ecma/builtin-objects/ecma-builtin-int8array-prototype.c

@@ -0,0 +1,43 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * 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 "ecma-builtins.h"
+
+#ifndef CONFIG_DISABLE_TYPEDARRAY_BUILTIN
+
+#define ECMA_BUILTINS_INTERNAL
+#include "ecma-builtins-internal.h"
+
+#define BUILTIN_INC_HEADER_NAME "ecma-builtin-int8array-prototype.inc.h"
+#define BUILTIN_UNDERSCORED_ID int8array_prototype
+#include "ecma-builtin-internal-routines-template.inc.h"
+
+/** \addtogroup ecma ECMA
+ * @{
+ *
+ * \addtogroup ecmabuiltins
+ * @{
+ *
+ * \addtogroup int8array prototype ECMA Int8Array.prototype object built-in
+ * @{
+ */
+
+/**
+ * @}
+ * @}
+ * @}
+ */
+
+#endif /* !CONFIG_DISABLE_TYPEDARRAY_BUILTIN */

jerry-core/ecma/builtin-objects/ecma-builtin-int8array-prototype.inc.h

@@ -0,0 +1,60 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * 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.
+ */
+
+/*
+ * Int8Array prototype description
+ */
+
+#ifndef OBJECT_ID
+# define OBJECT_ID(builtin_object_id)
+#endif /* !OBJECT_ID */
+
+#ifndef NUMBER_VALUE
+# define NUMBER_VALUE(name, number_value, prop_attributes)
+#endif /* !NUMBER_VALUE */
+
+#ifndef STRING_VALUE
+# define STRING_VALUE(name, magic_string_id, prop_attributes)
+#endif /* !STRING_VALUE */
+
+#ifndef OBJECT_VALUE
+# define OBJECT_VALUE(name, obj_builtin_id, prop_attributes)
+#endif /* !OBJECT_VALUE */
+
+#ifndef ROUTINE
+# define ROUTINE(name, c_function_name, args_number, length_prop_value)
+#endif /* !ROUTINE */
+
+/* Object identifier */
+OBJECT_ID (ECMA_BUILTIN_ID_INT8ARRAY_PROTOTYPE)
+
+/* ES2015 22.2.3.4 */
+OBJECT_VALUE (LIT_MAGIC_STRING_CONSTRUCTOR,
+              ECMA_BUILTIN_ID_INT8ARRAY,
+              ECMA_PROPERTY_CONFIGURABLE_WRITABLE)
+
+/* ES2015 22.2.6.1 */
+NUMBER_VALUE (LIT_MAGIC_STRING_BYTES_PER_ELEMENT_U,
+              1,
+              ECMA_PROPERTY_FIXED)
+
+#undef OBJECT_ID
+#undef SIMPLE_VALUE
+#undef NUMBER_VALUE
+#undef STRING_VALUE
+#undef OBJECT_VALUE
+#undef ROUTINE
+#undef ACCESSOR_READ_WRITE
+#undef ACCESSOR_READ_ONLY