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fix[ux]: improve error message for bad hex literals #4244

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merged 4 commits into from
Sep 19, 2024
Merged

fix[ux]: improve error message for bad hex literals #4244

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aa6e05b
fix[ux]: improve error message for bad hex literals
charles-cooper Sep 17, 2024
1cda9e8
Merge branch 'master' into fix/hex-capital-0x
charles-cooper Sep 18, 2024
6fd62d9
fix lint
charles-cooper Sep 18, 2024
248b85d
Merge branch 'master' into fix/hex-capital-0x
charles-cooper Sep 19, 2024
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3 changes: 3 additions & 0 deletions tests/unit/ast/nodes/test_hex.py
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,9 @@ def foo():
"""
foo: constant(bytes4) = 0x12_34_56
""",
"""
foo: constant(bytes4) = 0X12345678
""",
]


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5 changes: 5 additions & 0 deletions vyper/ast/nodes.py
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Expand Up @@ -854,10 +854,15 @@ class Hex(Constant):

def validate(self):
if "_" in self.value:
# TODO: revisit this, we should probably allow underscores
raise InvalidLiteral("Underscores not allowed in hex literals", self)
if len(self.value) % 2:
raise InvalidLiteral("Hex notation requires an even number of digits", self)

if self.value.startswith("0X"):
hint = f"Did you mean `0x{self.value[2:]}`?"
raise InvalidLiteral("Hex literal begins with 0X!", self, hint=hint)

@property
def n_nibbles(self):
"""
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