ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 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 | // This files contains runtime support implemented in JavaScript. |
| 29 | |
| 30 | // CAUTION: Some of the functions specified in this file are called |
| 31 | // directly from compiled code. These are the functions with names in |
| 32 | // ALL CAPS. The compiled code passes the first argument in 'this' and |
| 33 | // it does not push the function onto the stack. This means that you |
| 34 | // cannot use contexts in all these functions. |
| 35 | |
| 36 | |
| 37 | /* ----------------------------------- |
| 38 | - - - C o m p a r i s o n - - - |
| 39 | ----------------------------------- |
| 40 | */ |
| 41 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 42 | // The following declarations are shared with other native JS files. |
| 43 | // They are all declared at this one spot to avoid redeclaration errors. |
| 44 | var $Object = global.Object; |
| 45 | var $Array = global.Array; |
| 46 | var $String = global.String; |
| 47 | var $Number = global.Number; |
| 48 | var $Function = global.Function; |
| 49 | var $Boolean = global.Boolean; |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 50 | var $NaN = %GetRootNaN(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 51 | var builtins = this; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 52 | |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 53 | // ECMA-262 Section 11.9.3. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 54 | function EQUALS(y) { |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 55 | if (IS_STRING(this) && IS_STRING(y)) return %StringEquals(this, y); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 56 | var x = this; |
| 57 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 58 | while (true) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 59 | if (IS_NUMBER(x)) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 60 | while (true) { |
| 61 | if (IS_NUMBER(y)) return %NumberEquals(x, y); |
| 62 | if (IS_NULL_OR_UNDEFINED(y)) return 1; // not equal |
| 63 | if (!IS_SPEC_OBJECT(y)) { |
| 64 | // String or boolean. |
| 65 | return %NumberEquals(x, %ToNumber(y)); |
| 66 | } |
| 67 | y = %ToPrimitive(y, NO_HINT); |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 68 | } |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 69 | } else if (IS_STRING(x)) { |
| 70 | while (true) { |
| 71 | if (IS_STRING(y)) return %StringEquals(x, y); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 72 | if (IS_SYMBOL(y)) return 1; // not equal |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 73 | if (IS_NUMBER(y)) return %NumberEquals(%ToNumber(x), y); |
| 74 | if (IS_BOOLEAN(y)) return %NumberEquals(%ToNumber(x), %ToNumber(y)); |
| 75 | if (IS_NULL_OR_UNDEFINED(y)) return 1; // not equal |
| 76 | y = %ToPrimitive(y, NO_HINT); |
| 77 | } |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 78 | } else if (IS_SYMBOL(x)) { |
| 79 | while (true) { |
| 80 | if (IS_SYMBOL(y)) return %_ObjectEquals(x, y) ? 0 : 1; |
| 81 | if (!IS_SPEC_OBJECT(y)) return 1; // not equal |
| 82 | y = %ToPrimitive(y, NO_HINT); |
| 83 | } |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 84 | } else if (IS_BOOLEAN(x)) { |
| 85 | if (IS_BOOLEAN(y)) return %_ObjectEquals(x, y) ? 0 : 1; |
| 86 | if (IS_NULL_OR_UNDEFINED(y)) return 1; |
| 87 | if (IS_NUMBER(y)) return %NumberEquals(%ToNumber(x), y); |
| 88 | if (IS_STRING(y)) return %NumberEquals(%ToNumber(x), %ToNumber(y)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 89 | if (IS_SYMBOL(y)) return 1; // not equal |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 90 | // y is object. |
| 91 | x = %ToNumber(x); |
| 92 | y = %ToPrimitive(y, NO_HINT); |
| 93 | } else if (IS_NULL_OR_UNDEFINED(x)) { |
| 94 | return IS_NULL_OR_UNDEFINED(y) ? 0 : 1; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 95 | } else { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 96 | // x is an object. |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 97 | if (IS_SPEC_OBJECT(y)) { |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 98 | return %_ObjectEquals(x, y) ? 0 : 1; |
| 99 | } |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 100 | if (IS_NULL_OR_UNDEFINED(y)) return 1; // not equal |
| 101 | if (IS_BOOLEAN(y)) y = %ToNumber(y); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 102 | x = %ToPrimitive(x, NO_HINT); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 103 | } |
| 104 | } |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 105 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 106 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 107 | // ECMA-262, section 11.9.4, page 56. |
| 108 | function STRICT_EQUALS(x) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 109 | if (IS_STRING(this)) { |
| 110 | if (!IS_STRING(x)) return 1; // not equal |
| 111 | return %StringEquals(this, x); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 112 | } |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 113 | |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 114 | if (IS_NUMBER(this)) { |
| 115 | if (!IS_NUMBER(x)) return 1; // not equal |
| 116 | return %NumberEquals(this, x); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 117 | } |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 118 | |
kasperl@chromium.org | 8ccb0be | 2009-04-07 07:21:39 +0000 | [diff] [blame] | 119 | // If anything else gets here, we just do simple identity check. |
| 120 | // Objects (including functions), null, undefined and booleans were |
| 121 | // checked in the CompareStub, so there should be nothing left. |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 122 | return %_ObjectEquals(this, x) ? 0 : 1; |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 123 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 124 | |
| 125 | |
| 126 | // ECMA-262, section 11.8.5, page 53. The 'ncr' parameter is used as |
| 127 | // the result when either (or both) the operands are NaN. |
| 128 | function COMPARE(x, ncr) { |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 129 | var left; |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 130 | var right; |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 131 | // Fast cases for string, numbers and undefined compares. |
| 132 | if (IS_STRING(this)) { |
| 133 | if (IS_STRING(x)) return %_StringCompare(this, x); |
| 134 | if (IS_UNDEFINED(x)) return ncr; |
| 135 | left = this; |
| 136 | } else if (IS_NUMBER(this)) { |
| 137 | if (IS_NUMBER(x)) return %NumberCompare(this, x, ncr); |
| 138 | if (IS_UNDEFINED(x)) return ncr; |
| 139 | left = this; |
| 140 | } else if (IS_UNDEFINED(this)) { |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 141 | if (!IS_UNDEFINED(x)) { |
| 142 | %ToPrimitive(x, NUMBER_HINT); |
| 143 | } |
| 144 | return ncr; |
| 145 | } else if (IS_UNDEFINED(x)) { |
| 146 | %ToPrimitive(this, NUMBER_HINT); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 147 | return ncr; |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 148 | } else { |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 149 | left = %ToPrimitive(this, NUMBER_HINT); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 150 | } |
| 151 | |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 152 | right = %ToPrimitive(x, NUMBER_HINT); |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 153 | if (IS_STRING(left) && IS_STRING(right)) { |
| 154 | return %_StringCompare(left, right); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 155 | } else { |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 156 | var left_number = %ToNumber(left); |
| 157 | var right_number = %ToNumber(right); |
| 158 | if (NUMBER_IS_NAN(left_number) || NUMBER_IS_NAN(right_number)) return ncr; |
| 159 | return %NumberCompare(left_number, right_number, ncr); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 160 | } |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 161 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 162 | |
| 163 | |
| 164 | |
| 165 | /* ----------------------------------- |
| 166 | - - - A r i t h m e t i c - - - |
| 167 | ----------------------------------- |
| 168 | */ |
| 169 | |
| 170 | // ECMA-262, section 11.6.1, page 50. |
| 171 | function ADD(x) { |
| 172 | // Fast case: Check for number operands and do the addition. |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 173 | if (IS_NUMBER(this) && IS_NUMBER(x)) return %NumberAdd(this, x); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 174 | if (IS_STRING(this) && IS_STRING(x)) return %_StringAdd(this, x); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 175 | |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 176 | // Default implementation. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 177 | var a = %ToPrimitive(this, NO_HINT); |
| 178 | var b = %ToPrimitive(x, NO_HINT); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 179 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 180 | if (IS_STRING(a)) { |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 181 | return %_StringAdd(a, %ToString(b)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 182 | } else if (IS_STRING(b)) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 183 | return %_StringAdd(%NonStringToString(a), b); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 184 | } else { |
| 185 | return %NumberAdd(%ToNumber(a), %ToNumber(b)); |
| 186 | } |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 187 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 188 | |
| 189 | |
kasperl@chromium.org | 8ccb0be | 2009-04-07 07:21:39 +0000 | [diff] [blame] | 190 | // Left operand (this) is already a string. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 191 | function STRING_ADD_LEFT(y) { |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 192 | if (!IS_STRING(y)) { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 193 | if (IS_STRING_WRAPPER(y) && %_IsStringWrapperSafeForDefaultValueOf(y)) { |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 194 | y = %_ValueOf(y); |
| 195 | } else { |
| 196 | y = IS_NUMBER(y) |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 197 | ? %_NumberToString(y) |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 198 | : %ToString(%ToPrimitive(y, NO_HINT)); |
| 199 | } |
| 200 | } |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 201 | return %_StringAdd(this, y); |
kasperl@chromium.org | 8ccb0be | 2009-04-07 07:21:39 +0000 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 205 | // Right operand (y) is already a string. |
| 206 | function STRING_ADD_RIGHT(y) { |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 207 | var x = this; |
| 208 | if (!IS_STRING(x)) { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 209 | if (IS_STRING_WRAPPER(x) && %_IsStringWrapperSafeForDefaultValueOf(x)) { |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 210 | x = %_ValueOf(x); |
| 211 | } else { |
| 212 | x = IS_NUMBER(x) |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 213 | ? %_NumberToString(x) |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 214 | : %ToString(%ToPrimitive(x, NO_HINT)); |
| 215 | } |
| 216 | } |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 217 | return %_StringAdd(x, y); |
kasperl@chromium.org | 8ccb0be | 2009-04-07 07:21:39 +0000 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 221 | // ECMA-262, section 11.6.2, page 50. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 222 | function SUB(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 223 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 224 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 225 | return %NumberSub(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 226 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 227 | |
| 228 | |
| 229 | // ECMA-262, section 11.5.1, page 48. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 230 | function MUL(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 231 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 232 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 233 | return %NumberMul(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 234 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 235 | |
| 236 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 237 | // ECMA-262, section 11.5.2, page 49. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 238 | function DIV(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 239 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 240 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 241 | return %NumberDiv(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 242 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 243 | |
| 244 | |
| 245 | // ECMA-262, section 11.5.3, page 49. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 246 | function MOD(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 247 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 248 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 249 | return %NumberMod(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 250 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 251 | |
| 252 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 253 | |
| 254 | /* ------------------------------------------- |
| 255 | - - - B i t o p e r a t i o n s - - - |
| 256 | ------------------------------------------- |
| 257 | */ |
| 258 | |
| 259 | // ECMA-262, section 11.10, page 57. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 260 | function BIT_OR(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 261 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 262 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 263 | return %NumberOr(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 264 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 265 | |
| 266 | |
| 267 | // ECMA-262, section 11.10, page 57. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 268 | function BIT_AND(y) { |
| 269 | var x; |
| 270 | if (IS_NUMBER(this)) { |
| 271 | x = this; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 272 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 273 | } else { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 274 | x = %NonNumberToNumber(this); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 275 | // Make sure to convert the right operand to a number before |
| 276 | // bailing out in the fast case, but after converting the |
| 277 | // left operand. This ensures that valueOf methods on the right |
| 278 | // operand are always executed. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 279 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 280 | // Optimize for the case where we end up AND'ing a value |
| 281 | // that doesn't convert to a number. This is common in |
| 282 | // certain benchmarks. |
| 283 | if (NUMBER_IS_NAN(x)) return 0; |
| 284 | } |
| 285 | return %NumberAnd(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 286 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 287 | |
| 288 | |
| 289 | // ECMA-262, section 11.10, page 57. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 290 | function BIT_XOR(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 291 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 292 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 293 | return %NumberXor(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 294 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 295 | |
| 296 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 297 | // ECMA-262, section 11.7.1, page 51. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 298 | function SHL(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 299 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 300 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 301 | return %NumberShl(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 302 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 303 | |
| 304 | |
| 305 | // ECMA-262, section 11.7.2, page 51. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 306 | function SAR(y) { |
| 307 | var x; |
| 308 | if (IS_NUMBER(this)) { |
| 309 | x = this; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 310 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 311 | } else { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 312 | x = %NonNumberToNumber(this); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 313 | // Make sure to convert the right operand to a number before |
| 314 | // bailing out in the fast case, but after converting the |
| 315 | // left operand. This ensures that valueOf methods on the right |
| 316 | // operand are always executed. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 317 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 318 | // Optimize for the case where we end up shifting a value |
| 319 | // that doesn't convert to a number. This is common in |
| 320 | // certain benchmarks. |
| 321 | if (NUMBER_IS_NAN(x)) return 0; |
| 322 | } |
| 323 | return %NumberSar(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 324 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 325 | |
| 326 | |
| 327 | // ECMA-262, section 11.7.3, page 52. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 328 | function SHR(y) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 329 | var x = IS_NUMBER(this) ? this : %NonNumberToNumber(this); |
| 330 | if (!IS_NUMBER(y)) y = %NonNumberToNumber(y); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 331 | return %NumberShr(x, y); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 332 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 333 | |
| 334 | |
| 335 | |
| 336 | /* ----------------------------- |
| 337 | - - - H e l p e r s - - - |
| 338 | ----------------------------- |
| 339 | */ |
| 340 | |
| 341 | // ECMA-262, section 11.4.1, page 46. |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 342 | function DELETE(key, strict) { |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 343 | return %DeleteProperty(%ToObject(this), %ToName(key), strict); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 344 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 345 | |
| 346 | |
| 347 | // ECMA-262, section 11.8.7, page 54. |
| 348 | function IN(x) { |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 349 | if (!IS_SPEC_OBJECT(x)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 350 | throw %MakeTypeError('invalid_in_operator_use', [this, x]); |
| 351 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 352 | return %_IsNonNegativeSmi(this) ? |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 353 | %HasElement(x, this) : %HasProperty(x, %ToName(this)); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 354 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 355 | |
| 356 | |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 357 | // ECMA-262, section 11.8.6, page 54. To make the implementation more |
kasperl@chromium.org | 8ccb0be | 2009-04-07 07:21:39 +0000 | [diff] [blame] | 358 | // efficient, the return value should be zero if the 'this' is an |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 359 | // instance of F, and non-zero if not. This makes it possible to avoid |
| 360 | // an expensive ToBoolean conversion in the generated code. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 361 | function INSTANCE_OF(F) { |
| 362 | var V = this; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 363 | if (!IS_SPEC_FUNCTION(F)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 364 | throw %MakeTypeError('instanceof_function_expected', [V]); |
| 365 | } |
| 366 | |
| 367 | // If V is not an object, return false. |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 368 | if (!IS_SPEC_OBJECT(V)) { |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 369 | return 1; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 370 | } |
| 371 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 372 | // Check if function is bound, if so, get [[BoundFunction]] from it |
| 373 | // and use that instead of F. |
| 374 | var bindings = %BoundFunctionGetBindings(F); |
| 375 | if (bindings) { |
| 376 | F = bindings[kBoundFunctionIndex]; // Always a non-bound function. |
| 377 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 378 | // Get the prototype of F; if it is not an object, throw an error. |
| 379 | var O = F.prototype; |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 380 | if (!IS_SPEC_OBJECT(O)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 381 | throw %MakeTypeError('instanceof_nonobject_proto', [O]); |
| 382 | } |
| 383 | |
| 384 | // Return whether or not O is in the prototype chain of V. |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 385 | return %IsInPrototypeChain(O, V) ? 0 : 1; |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 386 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 387 | |
| 388 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 389 | // Filter a given key against an object by checking if the object |
| 390 | // has a property with the given key; return the key as a string if |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 391 | // it has. Otherwise returns 0 (smi). Used in for-in statements. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 392 | function FILTER_KEY(key) { |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 393 | var string = %ToName(key); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 394 | if (%HasProperty(this, string)) return string; |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 395 | return 0; |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 396 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 397 | |
| 398 | |
| 399 | function CALL_NON_FUNCTION() { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 400 | var delegate = %GetFunctionDelegate(this); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 401 | if (!IS_FUNCTION(delegate)) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 402 | throw %MakeTypeError('called_non_callable', [typeof this]); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 403 | } |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 404 | return %Apply(delegate, this, arguments, 0, %_ArgumentsLength()); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 405 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 406 | |
| 407 | |
sgjesse@chromium.org | 05521fc | 2009-05-21 07:37:44 +0000 | [diff] [blame] | 408 | function CALL_NON_FUNCTION_AS_CONSTRUCTOR() { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 409 | var delegate = %GetConstructorDelegate(this); |
sgjesse@chromium.org | 05521fc | 2009-05-21 07:37:44 +0000 | [diff] [blame] | 410 | if (!IS_FUNCTION(delegate)) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 411 | throw %MakeTypeError('called_non_callable', [typeof this]); |
sgjesse@chromium.org | 05521fc | 2009-05-21 07:37:44 +0000 | [diff] [blame] | 412 | } |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 413 | return %Apply(delegate, this, arguments, 0, %_ArgumentsLength()); |
| 414 | } |
| 415 | |
| 416 | |
| 417 | function CALL_FUNCTION_PROXY() { |
| 418 | var arity = %_ArgumentsLength() - 1; |
| 419 | var proxy = %_Arguments(arity); // The proxy comes in as an additional arg. |
| 420 | var trap = %GetCallTrap(proxy); |
| 421 | return %Apply(trap, this, arguments, 0, arity); |
| 422 | } |
| 423 | |
| 424 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 425 | function CALL_FUNCTION_PROXY_AS_CONSTRUCTOR() { |
| 426 | var proxy = this; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 427 | var trap = %GetConstructTrap(proxy); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 428 | return %Apply(trap, this, arguments, 0, %_ArgumentsLength()); |
sgjesse@chromium.org | 05521fc | 2009-05-21 07:37:44 +0000 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 432 | function APPLY_PREPARE(args) { |
| 433 | var length; |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 434 | // First check whether length is a positive Smi and args is an |
| 435 | // array. This is the fast case. If this fails, we do the slow case |
| 436 | // that takes care of more eventualities. |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 437 | if (IS_ARRAY(args)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 438 | length = args.length; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 439 | if (%_IsSmi(length) && length >= 0 && length < 0x800000 && |
| 440 | IS_SPEC_FUNCTION(this)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 441 | return length; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | length = (args == null) ? 0 : %ToUint32(args.length); |
| 446 | |
| 447 | // We can handle any number of apply arguments if the stack is |
| 448 | // big enough, but sanity check the value to avoid overflow when |
| 449 | // multiplying with pointer size. |
| 450 | if (length > 0x800000) { |
ager@chromium.org | 6a2b0aa | 2010-07-13 20:58:03 +0000 | [diff] [blame] | 451 | throw %MakeRangeError('stack_overflow', []); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 452 | } |
| 453 | |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 454 | if (!IS_SPEC_FUNCTION(this)) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 455 | throw %MakeTypeError('apply_non_function', |
| 456 | [ %ToString(this), typeof this ]); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | // Make sure the arguments list has the right type. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 460 | if (args != null && !IS_SPEC_OBJECT(args)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 461 | throw %MakeTypeError('apply_wrong_args', []); |
| 462 | } |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 463 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 464 | // Return the length which is the number of arguments to copy to the |
| 465 | // stack. It is guaranteed to be a small integer at this point. |
| 466 | return length; |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 467 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 468 | |
| 469 | |
| 470 | function APPLY_OVERFLOW(length) { |
ager@chromium.org | 6a2b0aa | 2010-07-13 20:58:03 +0000 | [diff] [blame] | 471 | throw %MakeRangeError('stack_overflow', []); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 472 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 473 | |
| 474 | |
| 475 | // Convert the receiver to an object - forward to ToObject. |
| 476 | function TO_OBJECT() { |
| 477 | return %ToObject(this); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 478 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 479 | |
| 480 | |
| 481 | // Convert the receiver to a number - forward to ToNumber. |
| 482 | function TO_NUMBER() { |
| 483 | return %ToNumber(this); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 484 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 485 | |
| 486 | |
| 487 | // Convert the receiver to a string - forward to ToString. |
| 488 | function TO_STRING() { |
| 489 | return %ToString(this); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 490 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 491 | |
| 492 | |
| 493 | /* ------------------------------------- |
| 494 | - - - C o n v e r s i o n s - - - |
| 495 | ------------------------------------- |
| 496 | */ |
| 497 | |
| 498 | // ECMA-262, section 9.1, page 30. Use null/undefined for no hint, |
| 499 | // (1) for number hint, and (2) for string hint. |
| 500 | function ToPrimitive(x, hint) { |
ager@chromium.org | 7c537e2 | 2008-10-16 08:43:32 +0000 | [diff] [blame] | 501 | // Fast case check. |
| 502 | if (IS_STRING(x)) return x; |
| 503 | // Normal behavior. |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 504 | if (!IS_SPEC_OBJECT(x)) return x; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 505 | if (IS_SYMBOL_WRAPPER(x)) return %_ValueOf(x); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 506 | if (hint == NO_HINT) hint = (IS_DATE(x)) ? STRING_HINT : NUMBER_HINT; |
| 507 | return (hint == NUMBER_HINT) ? %DefaultNumber(x) : %DefaultString(x); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 508 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 509 | |
| 510 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 511 | // ECMA-262, section 9.2, page 30 |
| 512 | function ToBoolean(x) { |
| 513 | if (IS_BOOLEAN(x)) return x; |
| 514 | if (IS_STRING(x)) return x.length != 0; |
| 515 | if (x == null) return false; |
| 516 | if (IS_NUMBER(x)) return !((x == 0) || NUMBER_IS_NAN(x)); |
| 517 | return true; |
| 518 | } |
| 519 | |
| 520 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 521 | // ECMA-262, section 9.3, page 31. |
| 522 | function ToNumber(x) { |
| 523 | if (IS_NUMBER(x)) return x; |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 524 | if (IS_STRING(x)) { |
| 525 | return %_HasCachedArrayIndex(x) ? %_GetCachedArrayIndex(x) |
| 526 | : %StringToNumber(x); |
| 527 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 528 | if (IS_BOOLEAN(x)) return x ? 1 : 0; |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 529 | if (IS_UNDEFINED(x)) return $NaN; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 530 | if (IS_SYMBOL(x)) return $NaN; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 531 | return (IS_NULL(x)) ? 0 : ToNumber(%DefaultNumber(x)); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 532 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 533 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 534 | function NonNumberToNumber(x) { |
| 535 | if (IS_STRING(x)) { |
| 536 | return %_HasCachedArrayIndex(x) ? %_GetCachedArrayIndex(x) |
| 537 | : %StringToNumber(x); |
| 538 | } |
| 539 | if (IS_BOOLEAN(x)) return x ? 1 : 0; |
| 540 | if (IS_UNDEFINED(x)) return $NaN; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 541 | if (IS_SYMBOL(x)) return $NaN; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 542 | return (IS_NULL(x)) ? 0 : ToNumber(%DefaultNumber(x)); |
| 543 | } |
| 544 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 545 | |
| 546 | // ECMA-262, section 9.8, page 35. |
| 547 | function ToString(x) { |
| 548 | if (IS_STRING(x)) return x; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 549 | if (IS_NUMBER(x)) return %_NumberToString(x); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 550 | if (IS_BOOLEAN(x)) return x ? 'true' : 'false'; |
| 551 | if (IS_UNDEFINED(x)) return 'undefined'; |
| 552 | return (IS_NULL(x)) ? 'null' : %ToString(%DefaultString(x)); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 553 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 554 | |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 555 | function NonStringToString(x) { |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 556 | if (IS_NUMBER(x)) return %_NumberToString(x); |
fschneider@chromium.org | b95b98b | 2010-02-23 10:34:29 +0000 | [diff] [blame] | 557 | if (IS_BOOLEAN(x)) return x ? 'true' : 'false'; |
| 558 | if (IS_UNDEFINED(x)) return 'undefined'; |
| 559 | return (IS_NULL(x)) ? 'null' : %ToString(%DefaultString(x)); |
| 560 | } |
| 561 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 562 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 563 | // ES6 symbols |
| 564 | function ToName(x) { |
| 565 | return IS_SYMBOL(x) ? x : %ToString(x); |
| 566 | } |
| 567 | |
| 568 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 569 | // ECMA-262, section 9.9, page 36. |
| 570 | function ToObject(x) { |
| 571 | if (IS_STRING(x)) return new $String(x); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 572 | if (IS_SYMBOL(x)) return new $Symbol(x); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 573 | if (IS_NUMBER(x)) return new $Number(x); |
| 574 | if (IS_BOOLEAN(x)) return new $Boolean(x); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 575 | if (IS_NULL_OR_UNDEFINED(x) && !IS_UNDETECTABLE(x)) { |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 576 | throw %MakeTypeError('undefined_or_null_to_object', []); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 577 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 578 | return x; |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 579 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 580 | |
| 581 | |
| 582 | // ECMA-262, section 9.4, page 34. |
| 583 | function ToInteger(x) { |
| 584 | if (%_IsSmi(x)) return x; |
| 585 | return %NumberToInteger(ToNumber(x)); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 586 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 587 | |
| 588 | |
| 589 | // ECMA-262, section 9.6, page 34. |
| 590 | function ToUint32(x) { |
mads.s.ager@gmail.com | 769cc96 | 2008-08-06 10:02:49 +0000 | [diff] [blame] | 591 | if (%_IsSmi(x) && x >= 0) return x; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 592 | return %NumberToJSUint32(ToNumber(x)); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 593 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 594 | |
| 595 | |
| 596 | // ECMA-262, section 9.5, page 34 |
| 597 | function ToInt32(x) { |
| 598 | if (%_IsSmi(x)) return x; |
| 599 | return %NumberToJSInt32(ToNumber(x)); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 600 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 601 | |
| 602 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 603 | // ES5, section 9.12 |
| 604 | function SameValue(x, y) { |
| 605 | if (typeof x != typeof y) return false; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 606 | if (IS_NUMBER(x)) { |
| 607 | if (NUMBER_IS_NAN(x) && NUMBER_IS_NAN(y)) return true; |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 608 | // x is +0 and y is -0 or vice versa. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 609 | if (x === 0 && y === 0 && (1 / x) != (1 / y)) return false; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 610 | } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 611 | return x === y; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 612 | } |
| 613 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 614 | |
| 615 | /* --------------------------------- |
| 616 | - - - U t i l i t i e s - - - |
| 617 | --------------------------------- |
| 618 | */ |
| 619 | |
| 620 | // Returns if the given x is a primitive value - not an object or a |
| 621 | // function. |
| 622 | function IsPrimitive(x) { |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 623 | // Even though the type of null is "object", null is still |
| 624 | // considered a primitive value. IS_SPEC_OBJECT handles this correctly |
| 625 | // (i.e., it will return false if x is null). |
| 626 | return !IS_SPEC_OBJECT(x); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 627 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 628 | |
| 629 | |
| 630 | // ECMA-262, section 8.6.2.6, page 28. |
| 631 | function DefaultNumber(x) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 632 | var valueOf = x.valueOf; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 633 | if (IS_SPEC_FUNCTION(valueOf)) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 634 | var v = %_CallFunction(x, valueOf); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 635 | if (%IsPrimitive(v)) return v; |
| 636 | } |
| 637 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 638 | var toString = x.toString; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 639 | if (IS_SPEC_FUNCTION(toString)) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 640 | var s = %_CallFunction(x, toString); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 641 | if (%IsPrimitive(s)) return s; |
| 642 | } |
| 643 | |
| 644 | throw %MakeTypeError('cannot_convert_to_primitive', []); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 645 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 646 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 647 | // ECMA-262, section 8.6.2.6, page 28. |
| 648 | function DefaultString(x) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 649 | var toString = x.toString; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 650 | if (IS_SPEC_FUNCTION(toString)) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 651 | var s = %_CallFunction(x, toString); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 652 | if (%IsPrimitive(s)) return s; |
| 653 | } |
| 654 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 655 | var valueOf = x.valueOf; |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 656 | if (IS_SPEC_FUNCTION(valueOf)) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 657 | var v = %_CallFunction(x, valueOf); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 658 | if (%IsPrimitive(v)) return v; |
| 659 | } |
| 660 | |
| 661 | throw %MakeTypeError('cannot_convert_to_primitive', []); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 662 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 663 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 664 | function ToPositiveInteger(x, rangeErrorName) { |
| 665 | var i = TO_INTEGER(x); |
| 666 | if (i < 0) throw %MakeRangeError(rangeErrorName); |
| 667 | return i; |
| 668 | } |
| 669 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 670 | |
| 671 | // NOTE: Setting the prototype for Array must take place as early as |
| 672 | // possible due to code generation for array literals. When |
| 673 | // generating code for a array literal a boilerplate array is created |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 674 | // that is cloned when running the code. It is essential that the |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 675 | // boilerplate gets the right prototype. |
| 676 | %FunctionSetPrototype($Array, new $Array(0)); |