function makeRope() { var left = newRope("@ABCDEFGHIJKLMNO", "PQRSTUVWXYZ[\\]^_"); var right = newRope("`abcdefghijklmno", "pqrstuvwxyz{|}~"); var rope = newRope(left, right); return {left, right, rope};
}
// Load a character from the left rope child using a constant index. The input // to String.prototype.charCodeAt is always rope. function testLeftChildConstant() { for (var i = 0; i < 200; ++i) { var {rope} = makeRope();
var ch = rope.charCodeAt(0);
assertEq(ch, 0x40);
}
} for (var i = 0; i < 2; ++i) {
testLeftChildConstant();
}
// Load a character from the right rope child using a constant index. The input // to String.prototype.charCodeAt is always rope. function testRightChildConstant() { for (var i = 0; i < 200; ++i) { var {rope} = makeRope();
var ch = rope.charCodeAt(32);
assertEq(ch, 0x60);
}
} for (var i = 0; i < 2; ++i) {
testRightChildConstant();
}
// Load a character from the left rope child using a variable index. The input // to String.prototype.charCodeAt is always rope. function testLeftChildVariable() { for (var i = 0; i < 200; ++i) { var {left, rope} = makeRope();
var idx = i % left.length; var ch = rope.charCodeAt(idx);
assertEq(ch, 0x40 + idx);
}
} for (var i = 0; i < 2; ++i) {
testLeftChildVariable();
}
// Load a character from the right rope child using a variable index. The input // to String.prototype.charCodeAt is always rope. function testRightChildVariable() { for (var i = 0; i < 200; ++i) { var {left, right, rope} = makeRope();
var idx = i % right.length; var ch = rope.charCodeAt(left.length + idx);
assertEq(ch, 0x60 + idx);
}
} for (var i = 0; i < 2; ++i) {
testRightChildVariable();
}
// Load all characters from both child ropes. This covers the case when the // call to String.prototype.charCodeAt linearizes the rope. function testBothChildren() { for (var i = 0; i < 200; ++i) { var {rope} = makeRope();
for (var j = 0; j < rope.length; ++j) { var ch = rope.charCodeAt(j);
assertEq(ch, 0x40 + j);
}
}
} for (var i = 0; i < 2; ++i) {
testBothChildren();
}
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