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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"
"\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";