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209 lines
8.7 KiB
209 lines
8.7 KiB
# Copyright 2006-2009 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Dictionary that is passed as defines for js2c.py.
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# Used for defines that must be defined for all native JS files.
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const NONE = 0;
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const READ_ONLY = 1;
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const DONT_ENUM = 2;
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const DONT_DELETE = 4;
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# Constants used for getter and setter operations.
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const GETTER = 0;
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const SETTER = 1;
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# These definitions must match the index of the properties in objects.h.
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const kApiTagOffset = 0;
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const kApiPropertyListOffset = 1;
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const kApiSerialNumberOffset = 2;
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const kApiConstructorOffset = 2;
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const kApiPrototypeTemplateOffset = 5;
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const kApiParentTemplateOffset = 6;
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const kApiFlagOffset = 14;
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const NO_HINT = 0;
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const NUMBER_HINT = 1;
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const STRING_HINT = 2;
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const kFunctionTag = 0;
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const kNewObjectTag = 1;
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# For date.js.
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const HoursPerDay = 24;
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const MinutesPerHour = 60;
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const SecondsPerMinute = 60;
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const msPerSecond = 1000;
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const msPerMinute = 60000;
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const msPerHour = 3600000;
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const msPerDay = 86400000;
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const msPerMonth = 2592000000;
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# For apinatives.js
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const kUninitialized = -1;
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const kReadOnlyPrototypeBit = 3; # For FunctionTemplateInfo, matches objects.h
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# Note: kDayZeroInJulianDay = ToJulianDay(1970, 0, 1).
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const kInvalidDate = 'Invalid Date';
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const kDayZeroInJulianDay = 2440588;
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const kMonthMask = 0x1e0;
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const kDayMask = 0x01f;
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const kYearShift = 9;
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const kMonthShift = 5;
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# Limits for parts of the date, so that we support all the dates that
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# ECMA 262 - 15.9.1.1 requires us to, but at the same time be sure that
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# the date (days since 1970) is in SMI range.
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const kMinYear = -1000000;
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const kMaxYear = 1000000;
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const kMinMonth = -10000000;
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const kMaxMonth = 10000000;
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# Native cache ids.
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const STRING_TO_REGEXP_CACHE_ID = 0;
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# Type query macros.
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#
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# Note: We have special support for typeof(foo) === 'bar' in the compiler.
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# It will *not* generate a runtime typeof call for the most important
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# values of 'bar'.
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macro IS_NULL(arg) = (arg === null);
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macro IS_NULL_OR_UNDEFINED(arg) = (arg == null);
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macro IS_UNDEFINED(arg) = (typeof(arg) === 'undefined');
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macro IS_NUMBER(arg) = (typeof(arg) === 'number');
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macro IS_STRING(arg) = (typeof(arg) === 'string');
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macro IS_BOOLEAN(arg) = (typeof(arg) === 'boolean');
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macro IS_OBJECT(arg) = (%_IsObject(arg));
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macro IS_ARRAY(arg) = (%_IsArray(arg));
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macro IS_FUNCTION(arg) = (%_IsFunction(arg));
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macro IS_REGEXP(arg) = (%_IsRegExp(arg));
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macro IS_SET(arg) = (%_ClassOf(arg) === 'Set');
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macro IS_MAP(arg) = (%_ClassOf(arg) === 'Map');
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macro IS_WEAKMAP(arg) = (%_ClassOf(arg) === 'WeakMap');
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macro IS_DATE(arg) = (%_ClassOf(arg) === 'Date');
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macro IS_NUMBER_WRAPPER(arg) = (%_ClassOf(arg) === 'Number');
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macro IS_STRING_WRAPPER(arg) = (%_ClassOf(arg) === 'String');
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macro IS_BOOLEAN_WRAPPER(arg) = (%_ClassOf(arg) === 'Boolean');
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macro IS_ERROR(arg) = (%_ClassOf(arg) === 'Error');
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macro IS_SCRIPT(arg) = (%_ClassOf(arg) === 'Script');
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macro IS_ARGUMENTS(arg) = (%_ClassOf(arg) === 'Arguments');
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macro IS_GLOBAL(arg) = (%_ClassOf(arg) === 'global');
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macro IS_UNDETECTABLE(arg) = (%_IsUndetectableObject(arg));
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macro FLOOR(arg) = $floor(arg);
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# Macro for ECMAScript 5 queries of the type:
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# "Type(O) is object."
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# This is the same as being either a function or an object in V8 terminology
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# (including proxies).
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# In addition, an undetectable object is also included by this.
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macro IS_SPEC_OBJECT(arg) = (%_IsSpecObject(arg));
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# Macro for ECMAScript 5 queries of the type:
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# "IsCallable(O)"
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# We assume here that this is the same as being either a function or a function
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# proxy. That ignores host objects with [[Call]] methods, but in most situations
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# we cannot handle those anyway.
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macro IS_SPEC_FUNCTION(arg) = (%_ClassOf(arg) === 'Function');
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# Indices in bound function info retrieved by %BoundFunctionGetBindings(...).
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const kBoundFunctionIndex = 0;
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const kBoundThisIndex = 1;
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const kBoundArgumentsStartIndex = 2;
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# Inline macros. Use %IS_VAR to make sure arg is evaluated only once.
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macro NUMBER_IS_NAN(arg) = (!%_IsSmi(%IS_VAR(arg)) && !(arg == arg));
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macro NUMBER_IS_FINITE(arg) = (%_IsSmi(%IS_VAR(arg)) || ((arg == arg) && (arg != 1/0) && (arg != -1/0)));
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macro TO_INTEGER(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : %NumberToInteger(ToNumber(arg)));
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macro TO_INTEGER_MAP_MINUS_ZERO(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : %NumberToIntegerMapMinusZero(ToNumber(arg)));
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macro TO_INT32(arg) = (%_IsSmi(%IS_VAR(arg)) ? arg : (arg >> 0));
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macro TO_UINT32(arg) = (arg >>> 0);
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macro TO_STRING_INLINE(arg) = (IS_STRING(%IS_VAR(arg)) ? arg : NonStringToString(arg));
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macro TO_NUMBER_INLINE(arg) = (IS_NUMBER(%IS_VAR(arg)) ? arg : NonNumberToNumber(arg));
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macro TO_OBJECT_INLINE(arg) = (IS_SPEC_OBJECT(%IS_VAR(arg)) ? arg : ToObject(arg));
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macro JSON_NUMBER_TO_STRING(arg) = ((%_IsSmi(%IS_VAR(arg)) || arg - arg == 0) ? %_NumberToString(arg) : "null");
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# Macros implemented in Python.
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python macro CHAR_CODE(str) = ord(str[1]);
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# Constants used on an array to implement the properties of the RegExp object.
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const REGEXP_NUMBER_OF_CAPTURES = 0;
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const REGEXP_FIRST_CAPTURE = 3;
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# We can't put macros in macros so we use constants here.
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# REGEXP_NUMBER_OF_CAPTURES
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macro NUMBER_OF_CAPTURES(array) = ((array)[0]);
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# Limit according to ECMA 262 15.9.1.1
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const MAX_TIME_MS = 8640000000000000;
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# Limit which is MAX_TIME_MS + msPerMonth.
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const MAX_TIME_BEFORE_UTC = 8640002592000000;
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# Gets the value of a Date object. If arg is not a Date object
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# a type error is thrown.
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macro DATE_VALUE(arg) = (%_ClassOf(arg) === 'Date' ? %_ValueOf(arg) : ThrowDateTypeError());
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macro DAY(time) = ($floor(time / 86400000));
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macro NAN_OR_DATE_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : DateFromTime(time));
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macro HOUR_FROM_TIME(time) = (Modulo($floor(time / 3600000), 24));
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macro MIN_FROM_TIME(time) = (Modulo($floor(time / 60000), 60));
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macro NAN_OR_MIN_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : MIN_FROM_TIME(time));
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macro SEC_FROM_TIME(time) = (Modulo($floor(time / 1000), 60));
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macro NAN_OR_SEC_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : SEC_FROM_TIME(time));
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macro MS_FROM_TIME(time) = (Modulo(time, 1000));
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macro NAN_OR_MS_FROM_TIME(time) = (NUMBER_IS_NAN(time) ? time : MS_FROM_TIME(time));
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# Last input and last subject of regexp matches.
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macro LAST_SUBJECT(array) = ((array)[1]);
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macro LAST_INPUT(array) = ((array)[2]);
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# REGEXP_FIRST_CAPTURE
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macro CAPTURE(index) = (3 + (index));
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const CAPTURE0 = 3;
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const CAPTURE1 = 4;
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# PropertyDescriptor return value indices - must match
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# PropertyDescriptorIndices in runtime.cc.
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const IS_ACCESSOR_INDEX = 0;
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const VALUE_INDEX = 1;
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const GETTER_INDEX = 2;
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const SETTER_INDEX = 3;
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const WRITABLE_INDEX = 4;
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const ENUMERABLE_INDEX = 5;
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const CONFIGURABLE_INDEX = 6;
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# For messages.js
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# Matches Script::Type from objects.h
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const TYPE_NATIVE = 0;
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const TYPE_EXTENSION = 1;
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const TYPE_NORMAL = 2;
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# Matches Script::CompilationType from objects.h
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const COMPILATION_TYPE_HOST = 0;
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const COMPILATION_TYPE_EVAL = 1;
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const COMPILATION_TYPE_JSON = 2;
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# Matches Messages::kNoLineNumberInfo from v8.h
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const kNoLineNumberInfo = 0;
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