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 31 const NONE = 0; 32 const READ_ONLY = 1; 33 const DONT_ENUM = 2; 34 const DONT_DELETE = 4; 35 36 # Constants used for getter and setter operations. 37 const GETTER = 0; 38 const SETTER = 1; 39 40 # These definitions must match the index of the properties in objects.h. 41 const kApiTagOffset = 0; 42 const kApiPropertyListOffset = 1; 43 const kApiSerialNumberOffset = 2; 44 const kApiConstructorOffset = 2; 45 const kApiPrototypeTemplateOffset = 5; 46 const kApiParentTemplateOffset = 6; 47 48 const NO_HINT = 0; 49 const NUMBER_HINT = 1; 50 const STRING_HINT = 2; 51 52 const kFunctionTag = 0; 53 const kNewObjectTag = 1; 54 55 # For date.js. 56 const HoursPerDay = 24; 57 const MinutesPerHour = 60; 58 const SecondsPerMinute = 60; 59 const msPerSecond = 1000; 60 const msPerMinute = 60000; 61 const msPerHour = 3600000; 62 const msPerDay = 86400000; 63 const msPerMonth = 2592000000; 64 65 # For apinatives.js 66 const kUninitialized = -1; 67 68 # Note: kDayZeroInJulianDay = ToJulianDay(1970, 0, 1). 69 const kInvalidDate = 'Invalid Date'; 70 const kDayZeroInJulianDay = 2440588; 71 const kMonthMask = 0x1e0; 72 const kDayMask = 0x01f; 73 const kYearShift = 9; 74 const kMonthShift = 5; 75 76 # Limits for parts of the date, so that we support all the dates that 77 # ECMA 262 - 15.9.1.1 requires us to, but at the same time be sure that 78 # the date (days since 1970) is in SMI range. 79 const kMinYear = -1000000; 80 const kMaxYear = 1000000; 81 const kMinMonth = -10000000; 82 const kMaxMonth = 10000000; 83 const kMinDate = -100000000; 84 const kMaxDate = 100000000; 85 86 # Native cache ids. 87 const 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'. 94 macro IS_NULL(arg) = (arg === null); 95 macro IS_NULL_OR_UNDEFINED(arg) = (arg == null); 96 macro IS_UNDEFINED(arg) = (typeof(arg) === 'undefined'); 97 macro IS_NUMBER(arg) = (typeof(arg) === 'number'); 98 macro IS_STRING(arg) = (typeof(arg) === 'string'); 99 macro IS_BOOLEAN(arg) = (typeof(arg) === 'boolean'); 100 macro IS_OBJECT(arg) = (%_IsObject(arg)); 101 macro IS_ARRAY(arg) = (%_IsArray(arg)); 102 macro IS_FUNCTION(arg) = (%_IsFunction(arg)); 103 macro IS_REGEXP(arg) = (%_IsRegExp(arg)); 104 macro IS_DATE(arg) = (%_ClassOf(arg) === 'Date'); 105 macro IS_NUMBER_WRAPPER(arg) = (%_ClassOf(arg) === 'Number'); 106 macro IS_STRING_WRAPPER(arg) = (%_ClassOf(arg) === 'String'); 107 macro IS_BOOLEAN_WRAPPER(arg) = (%_ClassOf(arg) === 'Boolean'); 108 macro IS_ERROR(arg) = (%_ClassOf(arg) === 'Error'); 109 macro IS_SCRIPT(arg) = (%_ClassOf(arg) === 'Script'); 110 macro IS_ARGUMENTS(arg) = (%_ClassOf(arg) === 'Arguments'); 111 macro IS_GLOBAL(arg) = (%_ClassOf(arg) === 'global'); 112 macro IS_UNDETECTABLE(arg) = (%_IsUndetectableObject(arg)); 113 macro FLOOR(arg) = $floor(arg); 114 115 # Macro for ECMAScript 5 queries of the type: 116 # "Type(O) is object." 117 # This is the same as being either a function or an object in V8 terminology. 118 # In addition, an undetectable object is also included by this. 119 macro IS_SPEC_OBJECT(arg) = (%_IsSpecObject(arg)); 120 121 # Inline macros. Use %IS_VAR to make sure arg is evaluated only once. 122 macro NUMBER_IS_NAN(arg) = (!%_IsSmi(%IS_VAR(arg)) && !(arg == arg)); 123 macro NUMBER_IS_FINITE(arg) = (%_IsSmi(%IS_VAR(arg)) || arg - arg == 0); 124 macro TO_INTEGER(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : %NumberToInteger(ToNumber(arg))); 125 macro TO_INTEGER_MAP_MINUS_ZERO(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : %NumberToIntegerMapMinusZero(ToNumber(arg))); 126 macro TO_INT32(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : (arg >> 0)); 127 macro TO_UINT32(arg) = (arg >>> 0); 128 macro TO_STRING_INLINE(arg) = (IS_STRING(%IS_VAR(arg)) ? arg : NonStringToString(arg)); 129 macro TO_NUMBER_INLINE(arg) = (IS_NUMBER(%IS_VAR(arg)) ? arg : NonNumberToNumber(arg)); 130 131 132 # Macros implemented in Python. 133 python macro CHAR_CODE(str) = ord(str[1]); 134 135 # Constants used on an array to implement the properties of the RegExp object. 136 const REGEXP_NUMBER_OF_CAPTURES = 0; 137 const REGEXP_FIRST_CAPTURE = 3; 138 139 # We can't put macros in macros so we use constants here. 140 # REGEXP_NUMBER_OF_CAPTURES 141 macro NUMBER_OF_CAPTURES(array) = ((array)[0]); 142 143 # Limit according to ECMA 262 15.9.1.1 144 const MAX_TIME_MS = 8640000000000000; 145 # Limit which is MAX_TIME_MS + msPerMonth. 146 const MAX_TIME_BEFORE_UTC = 8640002592000000; 147 148 # Gets the value of a Date object. If arg is not a Date object 149 # a type error is thrown. 150 macro DATE_VALUE(arg) = (%_ClassOf(arg) === 'Date' ? %_ValueOf(arg) : ThrowDateTypeError()); 151 macro DAY(time) = ($floor(time / 86400000)); 152 macro NAN_OR_DATE_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : DateFromTime(time)); 153 macro HOUR_FROM_TIME(time) = (Modulo($floor(time / 3600000), 24)); 154 macro MIN_FROM_TIME(time) = (Modulo($floor(time / 60000), 60)); 155 macro NAN_OR_MIN_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : MIN_FROM_TIME(time)); 156 macro SEC_FROM_TIME(time) = (Modulo($floor(time / 1000), 60)); 157 macro NAN_OR_SEC_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : SEC_FROM_TIME(time)); 158 macro MS_FROM_TIME(time) = (Modulo(time, 1000)); 159 macro NAN_OR_MS_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : MS_FROM_TIME(time)); 160 161 # Last input and last subject of regexp matches. 162 macro LAST_SUBJECT(array) = ((array)[1]); 163 macro LAST_INPUT(array) = ((array)[2]); 164 165 # REGEXP_FIRST_CAPTURE 166 macro CAPTURE(index) = (3 + (index)); 167 const CAPTURE0 = 3; 168 const CAPTURE1 = 4; 169 170 # PropertyDescriptor return value indices - must match 171 # PropertyDescriptorIndices in runtime.cc. 172 const IS_ACCESSOR_INDEX = 0; 173 const VALUE_INDEX = 1; 174 const GETTER_INDEX = 2; 175 const SETTER_INDEX = 3; 176 const WRITABLE_INDEX = 4; 177 const ENUMERABLE_INDEX = 5; 178 const CONFIGURABLE_INDEX = 6; 179
