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function testSubstrLatin1() {
var s1 = "abcdefghijklmnopqrstuvwxyz12345678900000a";
// Static strings.
assertEq(s1.substr(s1.length - 1), "a");
assertEq(s1.substr(s1.length - 2), "0a");
assertEq(s1.substr(26, 3), "123");
// (Fat) inline strings.
var s2 = s1.substr(3, 5);
assertEq(isLatin1(s2), true);
assertEq(s2, "defgh");
s2 = s1.substr(0, 20);
assertEq(isLatin1(s2), true);
assertEq(s2, "abcdefghijklmnopqrst");
// Dependent string.
s2 = s1.substr(1, s1.length - 2);
assertEq(isLatin1(s2), true);
assertEq(s2.length, 39);
assertEq(s2, "bcdefghijklmnopqrstuvwxyz12345678900000");
s2 = s2.substr(2).substr(1);
assertEq(isLatin1(s2), true);
assertEq(s2, "efghijklmnopqrstuvwxyz12345678900000");
}
testSubstrLatin1();
function testSubstrTwoByte() {
// Two byte string.
var s1 = "abcdefghijklmnopqrstuvwxyz12345678900000a\u1480";
assertEq(isLatin1(s1), false);
// Static string.
var s2 = s1.substr(28, 1);
assertEq(s2, "3");
// Inline string.
s2 = s1.substr(3, 5);
assertEq(s2, "defgh");
// Dependent string.
s2 = s1.substr(2);
assertEq(isLatin1(s2), false);
assertEq(s2, "cdefghijklmnopqrstuvwxyz12345678900000a\u1480");
s2 = s2.substr(2).substr(1);
assertEq(isLatin1(s2), false);
assertEq(s2, "fghijklmnopqrstuvwxyz12345678900000a\u1480");
}
testSubstrTwoByte();
function testSubstring() {
var s1 = "abcdefghijklmnopqrstuvwxyz123456789000ab";
var s2 = s1.substring(1, 8);
assertEq(isLatin1(s2), true);
assertEq(s2, "bcdefgh");
s2 = s1.substring(0, s1.length - 1);
assertEq(isLatin1(s2), true);
assertEq(s2, "abcdefghijklmnopqrstuvwxyz123456789000a");
}
testSubstring();
function testSlice() {
var s1 = "abcdefghijklmnopqrstuvwxyz123456789000ABC";
var s2 = s1.slice(1, 8);
assertEq(isLatin1(s2), true);
assertEq(s2, "bcdefgh");
s2 = s1.slice(0, -2);
assertEq(isLatin1(s2), true);
assertEq(s2, "abcdefghijklmnopqrstuvwxyz123456789000A");
}
testSlice();
function testUndepend() {
// Latin1
var s = "abcdefg".repeat(7);
s.indexOf("def"); // flatten
assertEq(isLatin1(s), true);
var dep = s.substr(7);
var res = dep.replace(/abcdef/g, ""); // StrReplaceRegexpRemove undepends.
assertEq(res, "gggggg");
// TwoByte
var s = "abcdefg\u1200".repeat(6);
s.indexOf("def"); // flatten
var dep = s.substr(8);
var res = dep.replace(/abcdefg/g, ""); // StrReplaceRegexpRemove undepends.
assertEq(res, "\u1200\u1200\u1200\u1200\u1200");
}
testUndepend();
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