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76ab3425d3
## Summary Resolves [#461](https://github.com/astral-sh/ty/issues/461). ty was hardcoded to infer `BytesLiteral` types for integer indexing into `BytesLiteral`. It will now infer `IntLiteral` types instead. ## Test Plan Markdown tests.
1.3 KiB
1.3 KiB
Bytes subscripts
Indexing
b = b"\x00abc\xff"
reveal_type(b[0]) # revealed: Literal[0]
reveal_type(b[1]) # revealed: Literal[97]
reveal_type(b[4]) # revealed: Literal[255]
reveal_type(b[-1]) # revealed: Literal[255]
reveal_type(b[-2]) # revealed: Literal[99]
reveal_type(b[-5]) # revealed: Literal[0]
reveal_type(b[False]) # revealed: Literal[0]
reveal_type(b[True]) # revealed: Literal[97]
x = b[5] # error: [index-out-of-bounds] "Index 5 is out of bounds for bytes literal `Literal[b"\x00abc\xff"]` with length 5"
reveal_type(x) # revealed: Unknown
y = b[-6] # error: [index-out-of-bounds] "Index -6 is out of bounds for bytes literal `Literal[b"\x00abc\xff"]` with length 5"
reveal_type(y) # revealed: Unknown
def _(n: int):
a = b"abcde"[n]
reveal_type(a) # revealed: int
Slices
b: bytes = b"\x00abc\xff"
reveal_type(b[0:2]) # revealed: Literal[b"\x00a"]
reveal_type(b[-3:]) # revealed: Literal[b"bc\xff"]
b[0:4:0] # error: [zero-stepsize-in-slice]
b[:4:0] # error: [zero-stepsize-in-slice]
b[0::0] # error: [zero-stepsize-in-slice]
b[::0] # error: [zero-stepsize-in-slice]
def _(m: int, n: int):
byte_slice1 = b[m:n]
reveal_type(byte_slice1) # revealed: bytes
def _(s: bytes) -> bytes:
byte_slice2 = s[0:5]
return reveal_type(byte_slice2) # revealed: bytes