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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.
import "package:expect/expect.dart";
import "dart:math" show pow, log;
void main() {
const String oneByteWhiteSpace = "\x09\x0a\x0b\x0c\x0d\x20\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.tryParse(radixString.toLowerCase(), radix: radix), m);
Expect.equals(
result, int.tryParse(radixString.toUpperCase(), radix: radix), m);
Expect.equals(result, int.tryParse(" $radixString", radix: radix), m);
Expect.equals(result, int.tryParse("$radixString ", radix: radix), m);
Expect.equals(result, int.tryParse(" $radixString ", radix: radix), m);
Expect.equals(result, int.tryParse("+$radixString", radix: radix), m);
Expect.equals(result, int.tryParse(" +$radixString", radix: radix), m);
Expect.equals(result, int.tryParse("+$radixString ", radix: radix), m);
Expect.equals(result, int.tryParse(" +$radixString ", radix: radix), m);
Expect.equals(-result, int.tryParse("-$radixString", radix: radix), m);
Expect.equals(-result, int.tryParse(" -$radixString", radix: radix), m);
Expect.equals(-result, int.tryParse("-$radixString ", radix: radix), m);
Expect.equals(-result, int.tryParse(" -$radixString ", radix: radix), m);
Expect.equals(
result,
int.tryParse("$oneByteWhiteSpace$radixString$oneByteWhiteSpace",
radix: radix),
m);
Expect.equals(
-result,
int.tryParse("$oneByteWhiteSpace-$radixString$oneByteWhiteSpace",
radix: radix),
m);
Expect.equals(result,
int.tryParse("$whiteSpace$radixString$whiteSpace", radix: radix), m);
Expect.equals(-result,
int.tryParse("$whiteSpace-$radixString$whiteSpace", radix: radix), m);
Expect.equals(result, int.tryParse("$zeros$radixString", radix: radix), m);
Expect.equals(result, int.tryParse("+$zeros$radixString", radix: radix), m);
Expect.equals(
-result, int.tryParse("-$zeros$radixString", radix: radix), m);
}
for (int r = 2; r <= 36; r++) {
for (int i = 0; i <= r * r; i++) {
String radixString = i.toRadixString(r);
testParse(i, radixString, r);
}
for (var v in [
0,
0x10000,
0x7FFFFFFF,
0x80000000,
0xFFFFFFFF,
0x100000000,
0x7FFFFFFFFFFFF8,
]) {
var string = v.toRadixString(r);
Expect.equals(v, int.tryParse(string, radix: r));
if (v > 0) {
Expect.equals(-v, int.tryParse("-$string", radix: r));
if (r == 16) {
Expect.equals(v, int.tryParse("0x$string"));
Expect.equals(v, int.tryParse("0X$string"));
}
}
}
}
// Allow both upper- and lower-case letters.
Expect.equals(0xABCD, int.tryParse("ABCD", radix: 16));
Expect.equals(0xABCD, int.tryParse("abcd", radix: 16));
Expect.equals(15628859, int.tryParse("09azAZ", radix: 36));
// Bigish numbers (representable precisely as both Int64 and double (2^53)).
Expect.equals(9007199254740991, int.tryParse("9007199254740991"));
Expect.equals(-9007199254740991, int.tryParse("-9007199254740991"));
// Allow whitespace before and after the number.
Expect.equals(1, int.tryParse(" 1", radix: 2));
Expect.equals(1, int.tryParse("1 ", radix: 2));
Expect.equals(1, int.tryParse(" 1 ", radix: 2));
Expect.equals(1, int.tryParse("\n1", radix: 2));
Expect.equals(1, int.tryParse("1\n", radix: 2));
Expect.equals(1, int.tryParse("\n1\n", radix: 2));
Expect.equals(1, int.tryParse("+1", radix: 2));
void testFails(String source, int radix, [String message]) {
Expect.isNull(int.tryParse(source, radix: radix), message);
}
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);
}
int digitX = 33;
Expect.equals(((digitX * 34) + 1) * 34, int.tryParse("0x10", radix: 34));
Expect.equals(((digitX * 35) + 1) * 35, int.tryParse("0x10", radix: 35));
// Radix must be in the range 2 .. 36.
Expect.throwsArgumentError(() => int.tryParse("0", radix: -1));
Expect.throwsArgumentError(() => int.tryParse("0", radix: 0));
Expect.throwsArgumentError(() => int.tryParse("0", radix: -1));
Expect.throwsArgumentError(() => int.tryParse("0", radix: 37));
// Regression test for http://dartbug.com/32858
Expect.equals(
-0x8000000000000000, int.tryParse("-0x8000000000000000"), "-minint");
// Tests run only with 64-bit integers.
if (0x8000000000000000 < 0) {
// `int` is 64-bit signed integers.
Expect.equals(
-0x8000000000000000, int.tryParse("0x8000000000000000"), "0xUnsigned");
Expect.equals(-1, int.tryParse("0xFFFFFFFFFFFFFFFF"), "0xUnsigned2");
Expect.equals(
0x8000000000000000 - 1, int.tryParse("0x7FFFFFFFFFFFFFFF"), "maxint");
testFails("8000000000000000", 16, "2^63 radix: 16");
testFails("FFFFFFFFFFFFFFFF", 16, "maxuint64 radix: 16");
testFails("-0xC000000000000000", null, "signed uint64");
}
}