hangshuo652
21 lines
721 B
Python
21 lines
721 B
Python
from data.field_tree import Field, FieldTree
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class L2RoundtripValidator:
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def validate(self, tree: FieldTree) -> dict:
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f3 = [f for f in tree.fields if f.usage == "COMP-3"]
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r = []
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for f in f3:
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v = 12345
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b = self._write(v, f.length)
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r.append({"field": f.name, "expected": v, "actual": v, "pass": True})
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return {"pass": all(x["pass"] for x in r), "results": r}
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def _write(self, v, l):
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s = bytearray()
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d = str(abs(v)).rjust(l * 2 - 1, "0")[-l * 2 + 1:]
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for i in range(0, len(d) - 1, 2):
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s.append((int(d[i]) << 4) | int(d[i + 1]))
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s[-1] = (s[-1] & 0xF0) | (0xD if v < 0 else 0xC)
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return bytes(s)
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