michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: // Specialized .h file to be used by both JS and C++ code.
michael@0: 
michael@0: #ifndef builtin_TypedObjectConstants_h
michael@0: #define builtin_TypedObjectConstants_h
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////
michael@0: // Slots for typed prototypes
michael@0: 
michael@0: #define JS_TYPROTO_SLOT_DESCR            0
michael@0: #define JS_TYPROTO_SLOTS                 1
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////
michael@0: // Slots for type objects
michael@0: //
michael@0: // Some slots apply to all type objects and some are specific to
michael@0: // particular kinds of type objects. For simplicity we use the same
michael@0: // number of slots no matter what kind of type descriptor we are
michael@0: // working with, even though this is mildly wasteful.
michael@0: 
michael@0: // Slots on all type objects
michael@0: #define JS_DESCR_SLOT_KIND               0  // Atomized string representation
michael@0: #define JS_DESCR_SLOT_STRING_REPR        1  // Atomized string representation
michael@0: #define JS_DESCR_SLOT_ALIGNMENT          2  // Alignment in bytes
michael@0: #define JS_DESCR_SLOT_SIZE               3  // Size in bytes, if sized, else 0
michael@0: #define JS_DESCR_SLOT_OPAQUE             4  // Atomized string representation
michael@0: #define JS_DESCR_SLOT_TYPROTO            5  // Prototype for instances, if any
michael@0: 
michael@0: // Slots on scalars, references, and x4s
michael@0: #define JS_DESCR_SLOT_TYPE               6  // Type code
michael@0: 
michael@0: // Slots on all array descriptors
michael@0: #define JS_DESCR_SLOT_ARRAY_ELEM_TYPE    6
michael@0: 
michael@0: // Slots on sized array descriptors
michael@0: #define JS_DESCR_SLOT_SIZED_ARRAY_LENGTH 7
michael@0: 
michael@0: // Slots on struct type objects
michael@0: #define JS_DESCR_SLOT_STRUCT_FIELD_NAMES 6
michael@0: #define JS_DESCR_SLOT_STRUCT_FIELD_TYPES 7
michael@0: #define JS_DESCR_SLOT_STRUCT_FIELD_OFFSETS 8
michael@0: 
michael@0: // Maximum number of slots for any descriptor
michael@0: #define JS_DESCR_SLOTS                   9
michael@0: 
michael@0: // These constants are for use exclusively in JS code. In C++ code,
michael@0: // prefer TypeRepresentation::Scalar etc, which allows you to
michael@0: // write a switch which will receive a warning if you omit a case.
michael@0: #define JS_TYPEREPR_UNSIZED_ARRAY_KIND  0
michael@0: #define JS_TYPEREPR_MAX_UNSIZED_KIND    0    // Unsized kinds go above here
michael@0: #define JS_TYPEREPR_SCALAR_KIND         1
michael@0: #define JS_TYPEREPR_REFERENCE_KIND      2
michael@0: #define JS_TYPEREPR_STRUCT_KIND         3
michael@0: #define JS_TYPEREPR_SIZED_ARRAY_KIND    4
michael@0: #define JS_TYPEREPR_X4_KIND             5
michael@0: 
michael@0: // These constants are for use exclusively in JS code. In C++ code,
michael@0: // prefer ScalarTypeRepresentation::TYPE_INT8 etc, which allows
michael@0: // you to write a switch which will receive a warning if you omit a
michael@0: // case.
michael@0: #define JS_SCALARTYPEREPR_INT8          0
michael@0: #define JS_SCALARTYPEREPR_UINT8         1
michael@0: #define JS_SCALARTYPEREPR_INT16         2
michael@0: #define JS_SCALARTYPEREPR_UINT16        3
michael@0: #define JS_SCALARTYPEREPR_INT32         4
michael@0: #define JS_SCALARTYPEREPR_UINT32        5
michael@0: #define JS_SCALARTYPEREPR_FLOAT32       6
michael@0: #define JS_SCALARTYPEREPR_FLOAT64       7
michael@0: #define JS_SCALARTYPEREPR_UINT8_CLAMPED 8
michael@0: 
michael@0: // These constants are for use exclusively in JS code. In C++ code,
michael@0: // prefer ReferenceTypeRepresentation::TYPE_ANY etc, which allows
michael@0: // you to write a switch which will receive a warning if you omit a
michael@0: // case.
michael@0: #define JS_REFERENCETYPEREPR_ANY        0
michael@0: #define JS_REFERENCETYPEREPR_OBJECT     1
michael@0: #define JS_REFERENCETYPEREPR_STRING     2
michael@0: 
michael@0: // These constants are for use exclusively in JS code.  In C++ code,
michael@0: // prefer X4TypeRepresentation::TYPE_INT32 etc, since that allows
michael@0: // you to write a switch which will receive a warning if you omit a
michael@0: // case.
michael@0: #define JS_X4TYPEREPR_INT32         0
michael@0: #define JS_X4TYPEREPR_FLOAT32       1
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////
michael@0: // Slots for typed objects
michael@0: 
michael@0: #define JS_TYPEDOBJ_SLOT_BYTEOFFSET       0
michael@0: #define JS_TYPEDOBJ_SLOT_BYTELENGTH       1
michael@0: #define JS_TYPEDOBJ_SLOT_OWNER            2
michael@0: #define JS_TYPEDOBJ_SLOT_NEXT_VIEW        3
michael@0: 
michael@0: #define JS_DATAVIEW_SLOTS              4 // Number of slots for data views
michael@0: 
michael@0: #define JS_TYPEDOBJ_SLOT_LENGTH           4 // Length of array (see (*) below)
michael@0: #define JS_TYPEDOBJ_SLOT_TYPE_DESCR       5 // For typed objects, type descr
michael@0: 
michael@0: #define JS_TYPEDOBJ_SLOT_DATA             7 // private slot, based on alloc kind
michael@0: #define JS_TYPEDOBJ_SLOTS                 6 // Number of slots for typed objs
michael@0: 
michael@0: // (*) The JS_TYPEDOBJ_SLOT_LENGTH slot stores the length for typed objects of
michael@0: // sized and unsized array type. The slot contains 0 for non-arrays.
michael@0: // The slot also contains 0 for *unattached* typed objects, no matter what
michael@0: // type they have.
michael@0: 
michael@0: #endif