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 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. // @dart = 2.9 import "package:expect/expect.dart"; import "dart:math" show pow, log; void main() { const String oneByteWhiteSpace = "\x09\x0a\x0b\x0c\x0d\x20" "\x85" //# 01: ok "\xa0"; const String whiteSpace = "\$oneByteWhiteSpace\u1680" "\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a" "\u2028\u2029\u202f\u205f\u3000\ufeff"; var digits = "0123456789abcdefghijklmnopqrstuvwxyz"; var zeros = "0" * 64; for (int i = 0; i < whiteSpace.length; i++) { var ws = whiteSpace[i]; Expect.equals(0, int.parse("\${ws}0\${ws}", radix: 2)); } void testParse(int result, String radixString, int radix) { var m = "\$radixString/\$radix->\$result"; Expect.equals( result, int.parse(radixString.toLowerCase(), radix: radix), m); Expect.equals( result, int.parse(radixString.toUpperCase(), radix: radix), m); Expect.equals(result, int.parse(" \$radixString", radix: radix), m); Expect.equals(result, int.parse("\$radixString ", radix: radix), m); Expect.equals(result, int.parse(" \$radixString ", radix: radix), m); Expect.equals(result, int.parse("+\$radixString", radix: radix), m); Expect.equals(result, int.parse(" +\$radixString", radix: radix), m); Expect.equals(result, int.parse("+\$radixString ", radix: radix), m); Expect.equals(result, int.parse(" +\$radixString ", radix: radix), m); Expect.equals(-result, int.parse("-\$radixString", radix: radix), m); Expect.equals(-result, int.parse(" -\$radixString", radix: radix), m); Expect.equals(-result, int.parse("-\$radixString ", radix: radix), m); Expect.equals(-result, int.parse(" -\$radixString ", radix: radix), m); Expect.equals( result, int.parse("\$oneByteWhiteSpace\$radixString\$oneByteWhiteSpace", radix: radix), m); Expect.equals( -result, int.parse("\$oneByteWhiteSpace-\$radixString\$oneByteWhiteSpace", radix: radix), m); Expect.equals(result, int.parse("\$whiteSpace\$radixString\$whiteSpace", radix: radix), m); Expect.equals(-result, int.parse("\$whiteSpace-\$radixString\$whiteSpace", radix: radix), m); Expect.equals(result, int.parse("\$zeros\$radixString", radix: radix), m); Expect.equals(result, int.parse("+\$zeros\$radixString", radix: radix), m); Expect.equals(-result, int.parse("-\$zeros\$radixString", radix: radix), m); } for (int r = 2; r <= 36; r++) { for (int i = 0; i <= r * r; i++) { String radixString = i.toRadixString(r); testParse(i, radixString, r); } } final max = 0x1FFFFFFFFFFFFF; for (int i = 2; i <= 36; i++) { // //# 02: ok // Test with bignums. // //# 02: continued final n = (log(max) / log(i)).truncate(); // //# 02: continued var digit = digits[i - 1]; // //# 02: continued testParse(pow(i, n) - 1, digit * n, i); // //# 02: continued testParse(0, zeros, i); // //# 02: continued } // //# 02: continued // Allow both upper- and lower-case letters. Expect.equals(0xABCD, int.parse("ABCD", radix: 16)); Expect.equals(0xABCD, int.parse("abcd", radix: 16)); Expect.equals(15628859, int.parse("09azAZ", radix: 36)); // Big-ish number. (2^53) Expect.equals(9007199254740991, int.parse("9007199254740991")); Expect.equals(-9007199254740991, int.parse("-9007199254740991")); Expect.equals(-9223372036854775808, int.parse("-9223372036854775808")); // Allow whitespace before and after the number. Expect.equals(1, int.parse(" 1", radix: 2)); Expect.equals(1, int.parse("1 ", radix: 2)); Expect.equals(1, int.parse(" 1 ", radix: 2)); Expect.equals(1, int.parse("\n1", radix: 2)); Expect.equals(1, int.parse("1\n", radix: 2)); Expect.equals(1, int.parse("\n1\n", radix: 2)); Expect.equals(1, int.parse("+1", radix: 2)); void testFails(String source, int radix) { Expect.throws(() { throw int.parse(source, radix: radix, onError: (s) { throw "FAIL"; }); }, isFail, "\$source/\$radix"); Expect.equals(-999, int.parse(source, radix: radix, onError: (s) => -999)); } for (int i = 2; i < 36; i++) { var char = i.toRadixString(36); testFails(char.toLowerCase(), i); testFails(char.toUpperCase(), i); } testFails("", 2); testFails("+ 1", 2); // No space between sign and digits. testFails("- 1", 2); // No space between sign and digits. testFails("0x", null); for (int i = 2; i <= 33; i++) { // No 0x specially allowed. // At radix 34 and above, "x" is a valid digit. testFails("0x10", i); } testBadTypes(var source, var radix) { Expect.throwsTypeError(() => int.parse(source, radix: radix, onError: (s) => 0)); //# badTypes: ok } testBadTypes(9, 10); testBadTypes(true, 10); testBadTypes("0", true); testBadTypes("0", "10"); testBadArguments(String source, int radix) { // If the types match, it should be an ArgumentError of some sort. Expect.throwsArgumentError( () => int.parse(source, radix: radix, onError: (s) => 0)); } testBadArguments("0", -1); testBadArguments("0", 0); testBadArguments("0", 1); testBadArguments("0", 37); // See also int_parse_radix_bad_handler_test.dart } bool isFail(e) => e == "FAIL";