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https://github.com/zap-proto/nim.git
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zeekay
68037f9ca4
Rename the capnp/ module set to zap/ and the capnpc compiler to zapc; rename all .capnp schemas and fixtures to .zap; update every import, include guard (isInZap), generated-code emission, exception type (ZapFormatError), and the macro-generated zapUnpackStructImpl/ zapPackStructImpl identifiers to the ZAP brand. Zero capnp/Cap'n Proto references remain in source or build files; upstream MIT attribution (Sandstorm, Michał Zieliński) is preserved. Raise the nimble nim floor from the fictional 0.12.0 to the locked, verified 0.15.2 (matches nimenv.cfg/build.sh; code carries fixes through Nim 0.18). Rewrite TODO.md as honest, source-anchored known-limitations (two-word intersegment pointers, nested/named-union codegen, RPC interface inheritance) instead of a bare wishlist.
33 lines
882 B
Nim
33 lines
882 B
Nim
# included from zap.nim
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when not compiles(isInZap): {.error: "do not import this file directly".}
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type
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BitSeq* = object
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length: int
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body: string
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proc newBitSeq(s: string, offset: int, itemCount: int): BitSeq =
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let bytes = int((itemCount + 7) / 8)
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if offset >= s.len or offset + bytes >= s.len:
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raise newException(ZapFormatError, "bitseq too long")
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result.length = itemCount
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result.body = s[offset..offset + bytes]
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proc len*(b: BitSeq): int =
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b.length
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proc `[]`*(b: BitSeq, i: int): bool =
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(int(b.body[i shr 8]) shl (i and 0x7)) != 0
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proc `[]=`*(b: var BitSeq, i: int, v: bool) =
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let bit = 1 shr (i and 0x7)
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if v:
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b.body[i shr 8] = char(int(b.body[i shr 8]) or bit)
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else:
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b.body[i shr 8] = char(int(b.body[i shr 8]) and (not bit))
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proc `$`*(b: BitSeq): string =
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result = ""
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for i in 0..<b.len:
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result.add(if b[i]: "1" else: "0")
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