1# Copyright 2006-2009 the V8 project authors. All rights reserved.
2# Redistribution and use in source and binary forms, with or without
3# modification, are permitted provided that the following conditions are
4# met:
5#
6#     * Redistributions of source code must retain the above copyright
7#       notice, this list of conditions and the following disclaimer.
8#     * Redistributions in binary form must reproduce the above
9#       copyright notice, this list of conditions and the following
10#       disclaimer in the documentation and/or other materials provided
11#       with the distribution.
12#     * Neither the name of Google Inc. nor the names of its
13#       contributors may be used to endorse or promote products derived
14#       from this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28# Dictionary that is passed as defines for js2c.py.
29# Used for defines that must be defined for all native JS files.
30
31const NONE        = 0;
32const READ_ONLY   = 1;
33const DONT_ENUM   = 2;
34const DONT_DELETE = 4;
35
36# Constants used for getter and setter operations.
37const GETTER = 0;
38const SETTER = 1;
39
40# These definitions must match the index of the properties in objects.h.
41const kApiTagOffset                 = 0;
42const kApiPropertyListOffset        = 1;
43const kApiSerialNumberOffset        = 2;
44const kApiConstructorOffset         = 2;
45const kApiPrototypeTemplateOffset   = 5;
46const kApiParentTemplateOffset      = 6;
47const kApiFlagOffset                = 14;
48
49const NO_HINT     = 0;
50const NUMBER_HINT = 1;
51const STRING_HINT = 2;
52
53const kFunctionTag  = 0;
54const kNewObjectTag = 1;
55
56# For date.js.
57const HoursPerDay      = 24;
58const MinutesPerHour   = 60;
59const SecondsPerMinute = 60;
60const msPerSecond      = 1000;
61const msPerMinute      = 60000;
62const msPerHour        = 3600000;
63const msPerDay         = 86400000;
64const msPerMonth       = 2592000000;
65
66# For apinatives.js
67const kUninitialized = -1;
68const kReadOnlyPrototypeBit = 3;  # For FunctionTemplateInfo, matches objects.h
69
70# Note: kDayZeroInJulianDay = ToJulianDay(1970, 0, 1).
71const kInvalidDate        = 'Invalid Date';
72const kDayZeroInJulianDay = 2440588;
73const kMonthMask          = 0x1e0;
74const kDayMask            = 0x01f;
75const kYearShift          = 9;
76const kMonthShift         = 5;
77
78# Limits for parts of the date, so that we support all the dates that
79# ECMA 262 - 15.9.1.1 requires us to, but at the same time be sure that
80# the date (days since 1970) is in SMI range.
81const kMinYear  = -1000000;
82const kMaxYear  = 1000000;
83const kMinMonth = -10000000;
84const kMaxMonth = 10000000;
85
86# Native cache ids.
87const STRING_TO_REGEXP_CACHE_ID = 0;
88
89# Type query macros.
90#
91# Note: We have special support for typeof(foo) === 'bar' in the compiler.
92#       It will *not* generate a runtime typeof call for the most important
93#       values of 'bar'.
94macro IS_NULL(arg)              = (arg === null);
95macro IS_NULL_OR_UNDEFINED(arg) = (arg == null);
96macro IS_UNDEFINED(arg)         = (typeof(arg) === 'undefined');
97macro IS_NUMBER(arg)            = (typeof(arg) === 'number');
98macro IS_STRING(arg)            = (typeof(arg) === 'string');
99macro IS_BOOLEAN(arg)           = (typeof(arg) === 'boolean');
100macro IS_OBJECT(arg)            = (%_IsObject(arg));
101macro IS_ARRAY(arg)             = (%_IsArray(arg));
102macro IS_FUNCTION(arg)          = (%_IsFunction(arg));
103macro IS_REGEXP(arg)            = (%_IsRegExp(arg));
104macro IS_SET(arg)               = (%_ClassOf(arg) === 'Set');
105macro IS_MAP(arg)               = (%_ClassOf(arg) === 'Map');
106macro IS_WEAKMAP(arg)           = (%_ClassOf(arg) === 'WeakMap');
107macro IS_DATE(arg)              = (%_ClassOf(arg) === 'Date');
108macro IS_NUMBER_WRAPPER(arg)    = (%_ClassOf(arg) === 'Number');
109macro IS_STRING_WRAPPER(arg)    = (%_ClassOf(arg) === 'String');
110macro IS_BOOLEAN_WRAPPER(arg)   = (%_ClassOf(arg) === 'Boolean');
111macro IS_ERROR(arg)             = (%_ClassOf(arg) === 'Error');
112macro IS_SCRIPT(arg)            = (%_ClassOf(arg) === 'Script');
113macro IS_ARGUMENTS(arg)         = (%_ClassOf(arg) === 'Arguments');
114macro IS_GLOBAL(arg)            = (%_ClassOf(arg) === 'global');
115macro IS_UNDETECTABLE(arg)      = (%_IsUndetectableObject(arg));
116macro FLOOR(arg)                = $floor(arg);
117
118# Macro for ECMAScript 5 queries of the type:
119# "Type(O) is object."
120# This is the same as being either a function or an object in V8 terminology
121# (including proxies).
122# In addition, an undetectable object is also included by this.
123macro IS_SPEC_OBJECT(arg)   = (%_IsSpecObject(arg));
124
125# Macro for ECMAScript 5 queries of the type:
126# "IsCallable(O)"
127# We assume here that this is the same as being either a function or a function
128# proxy. That ignores host objects with [[Call]] methods, but in most situations
129# we cannot handle those anyway.
130macro IS_SPEC_FUNCTION(arg) = (%_ClassOf(arg) === 'Function');
131
132# Indices in bound function info retrieved by %BoundFunctionGetBindings(...).
133const kBoundFunctionIndex = 0;
134const kBoundThisIndex = 1;
135const kBoundArgumentsStartIndex = 2;
136
137# Inline macros. Use %IS_VAR to make sure arg is evaluated only once.
138macro NUMBER_IS_NAN(arg) = (!%_IsSmi(%IS_VAR(arg)) && !(arg == arg));
139macro NUMBER_IS_FINITE(arg) = (%_IsSmi(%IS_VAR(arg)) || ((arg == arg) && (arg != 1/0) && (arg != -1/0)));
140macro TO_INTEGER(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : %NumberToInteger(ToNumber(arg)));
141macro TO_INTEGER_MAP_MINUS_ZERO(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : %NumberToIntegerMapMinusZero(ToNumber(arg)));
142macro TO_INT32(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : (arg >> 0));
143macro TO_UINT32(arg) = (arg >>> 0);
144macro TO_STRING_INLINE(arg) = (IS_STRING(%IS_VAR(arg)) ? arg : NonStringToString(arg));
145macro TO_NUMBER_INLINE(arg) = (IS_NUMBER(%IS_VAR(arg)) ? arg : NonNumberToNumber(arg));
146macro TO_OBJECT_INLINE(arg) = (IS_SPEC_OBJECT(%IS_VAR(arg)) ? arg : ToObject(arg));
147macro JSON_NUMBER_TO_STRING(arg) = ((%_IsSmi(%IS_VAR(arg)) || arg - arg == 0) ? %_NumberToString(arg) : "null");
148
149# Macros implemented in Python.
150python macro CHAR_CODE(str) = ord(str[1]);
151
152# Constants used on an array to implement the properties of the RegExp object.
153const REGEXP_NUMBER_OF_CAPTURES = 0;
154const REGEXP_FIRST_CAPTURE = 3;
155
156# We can't put macros in macros so we use constants here.
157# REGEXP_NUMBER_OF_CAPTURES
158macro NUMBER_OF_CAPTURES(array) = ((array)[0]);
159
160# Limit according to ECMA 262 15.9.1.1
161const MAX_TIME_MS = 8640000000000000;
162# Limit which is MAX_TIME_MS + msPerMonth.
163const MAX_TIME_BEFORE_UTC = 8640002592000000;
164
165# Gets the value of a Date object. If arg is not a Date object
166# a type error is thrown.
167macro CHECK_DATE(arg) = if (%_ClassOf(arg) !== 'Date') ThrowDateTypeError();
168macro LOCAL_DATE_VALUE(arg) = (%_DateField(arg, 0) + %_DateField(arg, 21));
169macro UTC_DATE_VALUE(arg)    = (%_DateField(arg, 0));
170
171macro LOCAL_YEAR(arg)        = (%_DateField(arg, 1));
172macro LOCAL_MONTH(arg)       = (%_DateField(arg, 2));
173macro LOCAL_DAY(arg)         = (%_DateField(arg, 3));
174macro LOCAL_WEEKDAY(arg)     = (%_DateField(arg, 4));
175macro LOCAL_HOUR(arg)        = (%_DateField(arg, 5));
176macro LOCAL_MIN(arg)         = (%_DateField(arg, 6));
177macro LOCAL_SEC(arg)         = (%_DateField(arg, 7));
178macro LOCAL_MS(arg)          = (%_DateField(arg, 8));
179macro LOCAL_DAYS(arg)        = (%_DateField(arg, 9));
180macro LOCAL_TIME_IN_DAY(arg) = (%_DateField(arg, 10));
181
182macro UTC_YEAR(arg)        = (%_DateField(arg, 11));
183macro UTC_MONTH(arg)       = (%_DateField(arg, 12));
184macro UTC_DAY(arg)         = (%_DateField(arg, 13));
185macro UTC_WEEKDAY(arg)     = (%_DateField(arg, 14));
186macro UTC_HOUR(arg)        = (%_DateField(arg, 15));
187macro UTC_MIN(arg)         = (%_DateField(arg, 16));
188macro UTC_SEC(arg)         = (%_DateField(arg, 17));
189macro UTC_MS(arg)          = (%_DateField(arg, 18));
190macro UTC_DAYS(arg)        = (%_DateField(arg, 19));
191macro UTC_TIME_IN_DAY(arg) = (%_DateField(arg, 20));
192
193macro TIMEZONE_OFFSET(arg)   = (%_DateField(arg, 21));
194
195macro SET_UTC_DATE_VALUE(arg, value) = (%DateSetValue(arg, value, 1));
196macro SET_LOCAL_DATE_VALUE(arg, value) = (%DateSetValue(arg, value, 0));
197
198# Last input and last subject of regexp matches.
199macro LAST_SUBJECT(array) = ((array)[1]);
200macro LAST_INPUT(array) = ((array)[2]);
201
202# REGEXP_FIRST_CAPTURE
203macro CAPTURE(index) = (3 + (index));
204const CAPTURE0 = 3;
205const CAPTURE1 = 4;
206
207# PropertyDescriptor return value indices - must match
208# PropertyDescriptorIndices in runtime.cc.
209const IS_ACCESSOR_INDEX = 0;
210const VALUE_INDEX = 1;
211const GETTER_INDEX = 2;
212const SETTER_INDEX = 3;
213const WRITABLE_INDEX = 4;
214const ENUMERABLE_INDEX = 5;
215const CONFIGURABLE_INDEX = 6;
216
217# For messages.js
218# Matches Script::Type from objects.h
219const TYPE_NATIVE = 0;
220const TYPE_EXTENSION = 1;
221const TYPE_NORMAL = 2;
222
223# Matches Script::CompilationType from objects.h
224const COMPILATION_TYPE_HOST = 0;
225const COMPILATION_TYPE_EVAL = 1;
226const COMPILATION_TYPE_JSON = 2;
227
228# Matches Messages::kNoLineNumberInfo from v8.h
229const kNoLineNumberInfo = 0;
230