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Allow negative shift bits.

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This commit is contained in:
Stephen Chung
2022-12-18 14:51:38 +08:00
parent 3da1d060ec
commit b880893154
4 changed files with 88 additions and 22 deletions
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2
tests/binary_ops.rs
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@@ -30,7 +30,9 @@ fn test_binary_ops() -> Result<(), Box<EvalAltResult>> {
assert_eq!(engine.eval::<INT>("let x = 10; x %= 4; x")?, 2);
assert_eq!(engine.eval::<INT>("let x = 10; x **= 4; x")?, 10000);
assert_eq!(engine.eval::<INT>("let x = 10; x <<= 4; x")?, 160);
assert_eq!(engine.eval::<INT>("let x = 10; x <<= -1; x")?, 5);
assert_eq!(engine.eval::<INT>("let x = 10; x >>= 4; x")?, 0);
assert_eq!(engine.eval::<INT>("let x = 10; x >>= -2; x")?, 40);
assert_eq!(engine.eval::<INT>("let x = 10; x &= 4; x")?, 0);
assert_eq!(engine.eval::<INT>("let x = 10; x |= 4; x")?, 14);
assert_eq!(engine.eval::<INT>("let x = 10; x ^= 4; x")?, 14);