js/src/builtin/TypedObjectConstants.h@6474c204b198 (annotated)
js/src/builtin/TypedObjectConstants.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * vim: set ts=8 sts=4 et sw=4 tw=99: |
| michael@0 | 3 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | // Specialized .h file to be used by both JS and C++ code. |
| michael@0 | 8 | |
| michael@0 | 9 | #ifndef builtin_TypedObjectConstants_h |
| michael@0 | 10 | #define builtin_TypedObjectConstants_h |
| michael@0 | 11 | |
| michael@0 | 12 | /////////////////////////////////////////////////////////////////////////// |
| michael@0 | 13 | // Slots for typed prototypes |
| michael@0 | 14 | |
| michael@0 | 15 | #define JS_TYPROTO_SLOT_DESCR 0 |
| michael@0 | 16 | #define JS_TYPROTO_SLOTS 1 |
| michael@0 | 17 | |
| michael@0 | 18 | /////////////////////////////////////////////////////////////////////////// |
| michael@0 | 19 | // Slots for type objects |
| michael@0 | 20 | // |
| michael@0 | 21 | // Some slots apply to all type objects and some are specific to |
| michael@0 | 22 | // particular kinds of type objects. For simplicity we use the same |
| michael@0 | 23 | // number of slots no matter what kind of type descriptor we are |
| michael@0 | 24 | // working with, even though this is mildly wasteful. |
| michael@0 | 25 | |
| michael@0 | 26 | // Slots on all type objects |
| michael@0 | 27 | #define JS_DESCR_SLOT_KIND 0 // Atomized string representation |
| michael@0 | 28 | #define JS_DESCR_SLOT_STRING_REPR 1 // Atomized string representation |
| michael@0 | 29 | #define JS_DESCR_SLOT_ALIGNMENT 2 // Alignment in bytes |
| michael@0 | 30 | #define JS_DESCR_SLOT_SIZE 3 // Size in bytes, if sized, else 0 |
| michael@0 | 31 | #define JS_DESCR_SLOT_OPAQUE 4 // Atomized string representation |
| michael@0 | 32 | #define JS_DESCR_SLOT_TYPROTO 5 // Prototype for instances, if any |
| michael@0 | 33 | |
| michael@0 | 34 | // Slots on scalars, references, and x4s |
| michael@0 | 35 | #define JS_DESCR_SLOT_TYPE 6 // Type code |
| michael@0 | 36 | |
| michael@0 | 37 | // Slots on all array descriptors |
| michael@0 | 38 | #define JS_DESCR_SLOT_ARRAY_ELEM_TYPE 6 |
| michael@0 | 39 | |
| michael@0 | 40 | // Slots on sized array descriptors |
| michael@0 | 41 | #define JS_DESCR_SLOT_SIZED_ARRAY_LENGTH 7 |
| michael@0 | 42 | |
| michael@0 | 43 | // Slots on struct type objects |
| michael@0 | 44 | #define JS_DESCR_SLOT_STRUCT_FIELD_NAMES 6 |
| michael@0 | 45 | #define JS_DESCR_SLOT_STRUCT_FIELD_TYPES 7 |
| michael@0 | 46 | #define JS_DESCR_SLOT_STRUCT_FIELD_OFFSETS 8 |
| michael@0 | 47 | |
| michael@0 | 48 | // Maximum number of slots for any descriptor |
| michael@0 | 49 | #define JS_DESCR_SLOTS 9 |
| michael@0 | 50 | |
| michael@0 | 51 | // These constants are for use exclusively in JS code. In C++ code, |
| michael@0 | 52 | // prefer TypeRepresentation::Scalar etc, which allows you to |
| michael@0 | 53 | // write a switch which will receive a warning if you omit a case. |
| michael@0 | 54 | #define JS_TYPEREPR_UNSIZED_ARRAY_KIND 0 |
| michael@0 | 55 | #define JS_TYPEREPR_MAX_UNSIZED_KIND 0 // Unsized kinds go above here |
| michael@0 | 56 | #define JS_TYPEREPR_SCALAR_KIND 1 |
| michael@0 | 57 | #define JS_TYPEREPR_REFERENCE_KIND 2 |
| michael@0 | 58 | #define JS_TYPEREPR_STRUCT_KIND 3 |
| michael@0 | 59 | #define JS_TYPEREPR_SIZED_ARRAY_KIND 4 |
| michael@0 | 60 | #define JS_TYPEREPR_X4_KIND 5 |
| michael@0 | 61 | |
| michael@0 | 62 | // These constants are for use exclusively in JS code. In C++ code, |
| michael@0 | 63 | // prefer ScalarTypeRepresentation::TYPE_INT8 etc, which allows |
| michael@0 | 64 | // you to write a switch which will receive a warning if you omit a |
| michael@0 | 65 | // case. |
| michael@0 | 66 | #define JS_SCALARTYPEREPR_INT8 0 |
| michael@0 | 67 | #define JS_SCALARTYPEREPR_UINT8 1 |
| michael@0 | 68 | #define JS_SCALARTYPEREPR_INT16 2 |
| michael@0 | 69 | #define JS_SCALARTYPEREPR_UINT16 3 |
| michael@0 | 70 | #define JS_SCALARTYPEREPR_INT32 4 |
| michael@0 | 71 | #define JS_SCALARTYPEREPR_UINT32 5 |
| michael@0 | 72 | #define JS_SCALARTYPEREPR_FLOAT32 6 |
| michael@0 | 73 | #define JS_SCALARTYPEREPR_FLOAT64 7 |
| michael@0 | 74 | #define JS_SCALARTYPEREPR_UINT8_CLAMPED 8 |
| michael@0 | 75 | |
| michael@0 | 76 | // These constants are for use exclusively in JS code. In C++ code, |
| michael@0 | 77 | // prefer ReferenceTypeRepresentation::TYPE_ANY etc, which allows |
| michael@0 | 78 | // you to write a switch which will receive a warning if you omit a |
| michael@0 | 79 | // case. |
| michael@0 | 80 | #define JS_REFERENCETYPEREPR_ANY 0 |
| michael@0 | 81 | #define JS_REFERENCETYPEREPR_OBJECT 1 |
| michael@0 | 82 | #define JS_REFERENCETYPEREPR_STRING 2 |
| michael@0 | 83 | |
| michael@0 | 84 | // These constants are for use exclusively in JS code. In C++ code, |
| michael@0 | 85 | // prefer X4TypeRepresentation::TYPE_INT32 etc, since that allows |
| michael@0 | 86 | // you to write a switch which will receive a warning if you omit a |
| michael@0 | 87 | // case. |
| michael@0 | 88 | #define JS_X4TYPEREPR_INT32 0 |
| michael@0 | 89 | #define JS_X4TYPEREPR_FLOAT32 1 |
| michael@0 | 90 | |
| michael@0 | 91 | /////////////////////////////////////////////////////////////////////////// |
| michael@0 | 92 | // Slots for typed objects |
| michael@0 | 93 | |
| michael@0 | 94 | #define JS_TYPEDOBJ_SLOT_BYTEOFFSET 0 |
| michael@0 | 95 | #define JS_TYPEDOBJ_SLOT_BYTELENGTH 1 |
| michael@0 | 96 | #define JS_TYPEDOBJ_SLOT_OWNER 2 |
| michael@0 | 97 | #define JS_TYPEDOBJ_SLOT_NEXT_VIEW 3 |
| michael@0 | 98 | |
| michael@0 | 99 | #define JS_DATAVIEW_SLOTS 4 // Number of slots for data views |
| michael@0 | 100 | |
| michael@0 | 101 | #define JS_TYPEDOBJ_SLOT_LENGTH 4 // Length of array (see (*) below) |
| michael@0 | 102 | #define JS_TYPEDOBJ_SLOT_TYPE_DESCR 5 // For typed objects, type descr |
| michael@0 | 103 | |
| michael@0 | 104 | #define JS_TYPEDOBJ_SLOT_DATA 7 // private slot, based on alloc kind |
| michael@0 | 105 | #define JS_TYPEDOBJ_SLOTS 6 // Number of slots for typed objs |
| michael@0 | 106 | |
| michael@0 | 107 | // (*) The JS_TYPEDOBJ_SLOT_LENGTH slot stores the length for typed objects of |
| michael@0 | 108 | // sized and unsized array type. The slot contains 0 for non-arrays. |
| michael@0 | 109 | // The slot also contains 0 for *unattached* typed objects, no matter what |
| michael@0 | 110 | // type they have. |
| michael@0 | 111 | |
| michael@0 | 112 | #endif |
