diff options
Diffstat (limited to 'js/src/jit-test/tests/cacheir/string-charCodeAt-rope.js')
-rw-r--r-- | js/src/jit-test/tests/cacheir/string-charCodeAt-rope.js | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/string-charCodeAt-rope.js b/js/src/jit-test/tests/cacheir/string-charCodeAt-rope.js new file mode 100644 index 0000000000..645c023230 --- /dev/null +++ b/js/src/jit-test/tests/cacheir/string-charCodeAt-rope.js @@ -0,0 +1,80 @@ +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(); +} |