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