str-to-num.js revision a7e24c173cf37484693b9abb38e494fa7bd7baeb
1// Copyright 2008 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 28function toNumber(val) { 29 return Number(val); 30} 31 32// assertEquals(, toNumber()); 33 34 35assertEquals(123, toNumber(" 123")); 36assertEquals(123, toNumber("\n123")); 37assertEquals(123, toNumber("\r123")); 38assertEquals(123, toNumber("\t123")); 39assertEquals(123, toNumber("\f123")); 40 41assertEquals(123, toNumber("123 ")); 42assertEquals(123, toNumber("123\n")); 43assertEquals(123, toNumber("123\r")); 44assertEquals(123, toNumber("123\t")); 45assertEquals(123, toNumber("123\f")); 46 47assertEquals(123, toNumber(" 123 ")); 48assertEquals(123, toNumber("\n123\n")); 49assertEquals(123, toNumber("\r123\r")); 50assertEquals(123, toNumber("\t123\t")); 51assertEquals(123, toNumber("\f123\f")); 52 53assertTrue(isNaN(toNumber(" NaN "))); 54assertEquals(Infinity, toNumber(" Infinity ") ," Infinity"); 55assertEquals(-Infinity, toNumber(" -Infinity ")); 56assertEquals(Infinity, toNumber(" +Infinity "), " +Infinity"); 57assertEquals(Infinity, toNumber("Infinity ") ,"Infinity"); 58assertEquals(-Infinity, toNumber("-Infinity ")); 59assertEquals(Infinity, toNumber("+Infinity "), "+Infinity"); 60 61assertEquals(0, toNumber("0")); 62assertEquals(0, toNumber("+0")); 63assertEquals(-0, toNumber("-0")); 64 65assertEquals(1, toNumber("1")); 66assertEquals(1, toNumber("+1")); 67assertEquals(-1, toNumber("-1")); 68 69assertEquals(2, toNumber("2")); 70assertEquals(2, toNumber("+2")); 71assertEquals(-2, toNumber("-2")); 72 73assertEquals(3.1415926, toNumber("3.1415926")); 74assertEquals(3.1415926, toNumber("+3.1415926")); 75assertEquals(-3.1415926, toNumber("-3.1415926")); 76 77assertEquals(5, toNumber("5.")); 78assertEquals(5, toNumber("+5.")); 79assertEquals(-5, toNumber("-5.")); 80 81assertEquals(500, toNumber("5e2")); 82assertEquals(500, toNumber("+5e2")); 83assertEquals(-500, toNumber("-5e2")); 84assertEquals(500, toNumber("5e+2")); 85assertEquals(500, toNumber("+5e+2")); 86assertEquals(-500, toNumber("-5e+2")); 87assertEquals(0.05, toNumber("5e-2")); 88assertEquals(0.05, toNumber("+5e-2")); 89assertEquals(-0.05, toNumber("-5e-2")); 90 91assertEquals(0.00001, toNumber(".00001")); 92assertEquals(0.00001, toNumber("+.00001")); 93assertEquals(-0.00001, toNumber("-.00001")); 94assertEquals(1, toNumber(".00001e5")); 95assertEquals(1, toNumber("+.00001e5")); 96assertEquals(-1, toNumber("-.00001e5")); 97assertEquals(1, toNumber(".00001e+5")); 98assertEquals(1, toNumber("+.00001e+5")); 99assertEquals(-1, toNumber("-.00001e+5")); 100assertEquals(0.00001, toNumber(".001e-2")); 101assertEquals(0.00001, toNumber("+.001e-2")); 102assertEquals(-0.00001, toNumber("-.001e-2")); 103 104assertEquals(12340000, toNumber("1234e4")); 105assertEquals(12340000, toNumber("+1234e4")); 106assertEquals(-12340000, toNumber("-1234e4")); 107assertEquals(12340000, toNumber("1234e+4")); 108assertEquals(12340000, toNumber("+1234e+4")); 109assertEquals(-12340000, toNumber("-1234e+4")); 110assertEquals(0.1234, toNumber("1234e-4")); 111assertEquals(0.1234, toNumber("+1234e-4")); 112assertEquals(-0.1234, toNumber("-1234e-4")); 113 114assertEquals(0, toNumber("0x0")); 115assertEquals(1, toNumber("0x1")); 116assertEquals(2, toNumber("0x2")); 117assertEquals(9, toNumber("0x9")); 118assertEquals(10, toNumber("0xa")); 119assertEquals(11, toNumber("0xb")); 120assertEquals(15, toNumber("0xf")); 121assertEquals(10, toNumber("0xA")); 122assertEquals(11, toNumber("0xB")); 123assertEquals(15, toNumber("0xF")); 124 125assertEquals(0, toNumber("0X0")); 126assertEquals(9, toNumber("0X9")); 127assertEquals(10, toNumber("0Xa")); 128assertEquals(10, toNumber("0XA")); 129assertEquals(15, toNumber("0Xf")); 130assertEquals(15, toNumber("0XF")); 131 132assertEquals(0, toNumber("0x000")); 133assertEquals(9, toNumber("0x009")); 134assertEquals(10, toNumber("0x00a")); 135assertEquals(10, toNumber("0x00A")); 136assertEquals(15, toNumber("0x00f")); 137assertEquals(15, toNumber("0x00F")); 138 139assertEquals(0, toNumber("00")); 140assertEquals(1, toNumber("01")); 141assertEquals(2, toNumber("02")); 142assertEquals(10, toNumber("010")); 143assertEquals(100, toNumber("0100")); 144assertEquals(100, toNumber("000100")); 145 146assertEquals(Infinity, toNumber("1e999"), "1e999"); 147assertEquals(-Infinity, toNumber("-1e999")); 148assertEquals(0, toNumber("1e-999")); 149assertEquals(0, toNumber("-1e-999")); 150assertEquals(Infinity, 1 / toNumber("1e-999"), "1e-999"); 151assertEquals(-Infinity, 1 / toNumber("-1e-999")); 152 153assertTrue(isNaN(toNumber("junk")), "junk"); 154assertTrue(isNaN(toNumber("100 junk")), "100 junk"); 155assertTrue(isNaN(toNumber("0x100 junk")), "0x100 junk"); 156assertTrue(isNaN(toNumber("100.0 junk")), "100.0 junk"); 157assertTrue(isNaN(toNumber(".1e4 junk")), ".1e4 junk"); 158assertTrue(isNaN(toNumber("Infinity junk")), "Infinity junk"); 159