Revert Preserve to a concrete type
A generic type with an embedded type is too much hassle with the type system. Add an "embedded" flag on "Preserve" to mark if a value should be considered as embedded.
This commit is contained in:
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9ed18c279c
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e6d07ba924
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@ -2,7 +2,7 @@
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# SPDX-License-Identifier: Unlicense
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import bigints
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import std/[algorithm, base64, endians, hashes, options, sets, sequtils, streams, strutils, tables, typetraits]
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import std/[base64, endians, hashes, options, sets, sequtils, streams, tables, typetraits]
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from std/json import escapeJson, escapeJsonUnquoted
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from std/macros import hasCustomPragma, getCustomPragmaVal
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@ -10,18 +10,16 @@ from std/macros import hasCustomPragma, getCustomPragmaVal
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type
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PreserveKind* = enum
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pkBoolean, pkFloat, pkDouble, pkSignedInteger, pkBigInteger, pkString, pkByteString, pkSymbol,
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pkRecord, pkSequence, pkSet, pkDictionary,
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pkEmbedded
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pkRecord, pkSequence, pkSet, pkDictionary
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const
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atomKinds* = {pkBoolean, pkFloat, pkDouble, pkSignedInteger, pkBigInteger, pkString, pkByteString, pkSymbol}
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compoundKinds* = {pkRecord, pkSequence, pkSet, pkDictionary}
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type
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DictEntry[EmbededType] = tuple[key: PreserveGen[EmbededType], val: PreserveGen[EmbededType]]
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DictEntry = tuple[key: Preserve, val: Preserve]
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PreserveGen*[EmbeddedType] {.acyclic.} = ref object
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## Generic ``Preserve`` type before embedding.
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Preserve* {.acyclic.} = object
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case kind*: PreserveKind
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of pkBoolean:
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bool*: bool
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@ -40,31 +38,47 @@ type
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of pkSymbol:
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symbol*: string
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of pkRecord:
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record*: seq[PreserveGen[EmbeddedType]] # label is last
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record*: seq[Preserve] # label is last
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of pkSequence:
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sequence*: seq[PreserveGen[EmbeddedType]]
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sequence*: seq[Preserve]
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of pkSet:
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set*: seq[PreserveGen[EmbeddedType]]
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# HashSet templates not hygenic enough for this type
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set*: seq[Preserve]
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# TODO: HashSet
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of pkDictionary:
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dict*: seq[DictEntry[EmbeddedType]]
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# Tables templates not hygenic enough for this type
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of pkEmbedded:
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when EmbeddedType is void:
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embedded*: PreserveGen[EmbeddedType]
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else:
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embedded*: EmbeddedType
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dict*: seq[DictEntry]
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# TODO: Tables
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embedded*: bool
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template PreserveOf*(T: typedesc): untyped = PreserveGen[T]
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## Customize ``PreserveGen`` with an embedded type.
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## ```
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## type MyPreserve = PreserveOf(MyEmbbededType)
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## ```
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type
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Preserve* = PreserveOf(void)
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## Type of Preserves with all embedded values
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## converted to an unembedded representation.
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proc `==`*(x, y: Preserve): bool =
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## Check `x` and `y` for equivalence.
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if x.kind == y.kind and x.embedded == y.embedded:
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case x.kind
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of pkBoolean:
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result = x.bool == y.bool
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of pkFloat:
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result = x.float == y.float
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of pkDouble:
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result = x.double == y.double
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of pkSignedInteger:
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result = x.int == y.int
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of pkBigInteger:
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result = x.bigint == y.bigint
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of pkString:
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result = x.string == y.string
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of pkByteString:
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result = x.bytes == y.bytes
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of pkSymbol:
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result = x.symbol == y.symbol
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of pkRecord:
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result = x.record == y.record
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of pkSequence:
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for i, val in x.sequence:
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if y.sequence[i] != val: return false
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result = true
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of pkSet:
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result = x.set == y.set
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of pkDictionary:
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result = x.dict == y.dict
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proc `<`(x, y: string | seq[byte]): bool =
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for i in 0 .. min(x.high, y.high):
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@ -72,9 +86,11 @@ proc `<`(x, y: string | seq[byte]): bool =
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if x[i] != y[i]: return false
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x.len < y.len
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proc `<`*[E](x, y: PreserveGen[E]): bool =
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proc `<`*(x, y: Preserve): bool =
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## Preserves have a total order over Values. Check if `x` is ordered before `y`.
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if x.kind != y.kind:
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if x.embedded != y.embedded:
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result = y.embedded
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elif x.kind != y.kind:
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if x.kind == pkSignedInteger and y.kind == pkBigInteger:
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result = x.int.initBigInt < y.bigint
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elif x.kind == pkBigInteger and y.kind == pkSignedInteger:
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@ -103,7 +119,7 @@ proc `<`*[E](x, y: PreserveGen[E]): bool =
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if x.record[x.record.high] < y.record[y.record.high]: return true
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for i in 0..<min(x.record.high, y.record.high):
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if x.record[i] < y.record[i]: return true
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if x.record[i] != y.record[i]: return false
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if x.record[i] == y.record[i]: return false
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result = x.record.len < y.record.len
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of pkSequence:
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for i in 0..min(x.sequence.high, y.sequence.high):
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@ -122,131 +138,88 @@ proc `<`*[E](x, y: PreserveGen[E]): bool =
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if x.dict[i].val < y.dict[i].val: return true
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if x.dict[i].val != y.dict[i].val: return false
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result = x.dict.len < y.dict.len
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of pkEmbedded:
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when not E is void:
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result = x.embedded < y.embedded
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proc `==`*[E](x, y: PreserveGen[E]): bool =
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## Check `x` and `y` for equivalence.
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# TODO: is this necessary to define?
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if x.isNil or y.isNil:
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result = x.isNil and y.isNil
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elif x.kind == y.kind:
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case x.kind
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of pkBoolean:
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result = x.bool == y.bool
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of pkFloat:
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result = x.float == y.float
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of pkDouble:
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result = x.double == y.double
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of pkSignedInteger:
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result = x.int == y.int
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of pkBigInteger:
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result = x.bigint == y.bigint
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of pkString:
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result = x.string == y.string
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of pkByteString:
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result = x.bytes == y.bytes
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of pkSymbol:
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result = x.symbol == y.symbol
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of pkRecord:
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result = x.record == y.record
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of pkSequence:
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for i, val in x.sequence:
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if y.sequence[i] != val: return false
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result = true
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of pkSet:
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result = x.set == y.set
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of pkDictionary:
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result = x.dict == y.dict
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of pkEmbedded:
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result = x.embedded == y.embedded
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proc hash*[E](prs: PreserveGen[E]): Hash =
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## Produce a `Hash` of `prs` for use with a `HashSet` or `Table`.
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type Value = PreserveGen[E]
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var h = hash(prs.kind.int)
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case prs.kind
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proc hash*(pr: Preserve): Hash =
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## Produce a `Hash` of `pr` for use with a `HashSet` or `Table`.
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var h = hash(pr.kind.int) !& hash(pr.embedded)
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case pr.kind
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of pkBoolean:
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h = h !& hash(prs.bool)
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h = h !& hash(pr.bool)
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of pkFloat:
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h = h !& hash(prs.float)
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h = h !& hash(pr.float)
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of pkDouble:
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h = h !& hash(prs.double)
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h = h !& hash(pr.double)
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of pkSignedInteger:
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h = h !& hash(prs.int)
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h = h !& hash(pr.int)
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of pkBigInteger:
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h = h !& hash(prs.bigint.flags)
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h = h !& hash(prs.bigint)
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h = h !& hash(pr.bigint.flags)
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h = h !& hash(pr.bigint)
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of pkString:
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h = h !& hash(prs.string)
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h = h !& hash(pr.string)
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of pkByteString:
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h = h !& hash(prs.bytes)
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h = h !& hash(pr.bytes)
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of pkSymbol:
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h = h !& hash(prs.symbol)
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h = h !& hash(pr.symbol)
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of pkRecord:
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for val in prs.record:
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for val in pr.record:
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h = h !& hash(val)
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of pkSequence:
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for val in prs.sequence:
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for val in pr.sequence:
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h = h !& hash(val)
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of pkSet:
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for val in prs.set.items:
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for val in pr.set.items:
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h = h !& hash(val)
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of pkDictionary:
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for (key, val) in prs.dict.items:
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for (key, val) in pr.dict.items:
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h = h !& hash(key) !& hash(val)
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of pkEmbedded:
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when not E is void:
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h = h !& hash(prs.embedded)
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!$h
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proc `[]`*(prs: Preserve; i: int): Preserve =
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## Select an indexed value from `prs`.
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proc `[]`*(pr: Preserve; i: int): Preserve =
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## Select an indexed value from `pr`.
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## Only valid for records and sequences.
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case prs.kind
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of pkRecord: prs.record[i]
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of pkSequence: prs.sequence[i]
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case pr.kind
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of pkRecord: pr.record[i]
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of pkSequence: pr.sequence[i]
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else:
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raise newException(ValueError, "`[]` is not valid for " & $prs.kind)
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raise newException(ValueError, "`[]` is not valid for " & $pr.kind)
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proc incl*[E](prs: var PreserveGen[E]; key: PreserveGen[E]) =
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## Include `key` in the Preserves set `prs`.
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for i in 0..prs.set.high:
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if key < prs.set[i]:
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insert(prs.set, [key], i)
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proc incl*(pr: var Preserve; key: Preserve) =
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## Include `key` in the Preserves set `pr`.
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for i in 0..pr.set.high:
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if key < pr.set[i]:
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insert(pr.set, [key], i)
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return
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prs.set.add(key)
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pr.set.add(key)
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proc excl*[E](prs: var PreserveGen[E]; key: PreserveGen[E]) =
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## Exclude `key` from the Preserves set `prs`.
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for i in 0..prs.set.high:
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if prs.set[i] == key:
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delete(prs.set, i, i)
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proc excl*(pr: var Preserve; key: Preserve) =
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## Exclude `key` from the Preserves set `pr`.
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for i in 0..pr.set.high:
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if pr.set[i] == key:
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delete(pr.set, i, i)
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break
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proc `[]`*[E](prs: var PreserveGen[E]; key: PreserveGen[E]): PreserveGen[E] =
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## Select a value by `key` from the Preserves dictionary `prs`.
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for (k, v) in prs.dict.items:
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proc `[]`*(pr: var Preserve; key: Preserve): Preserve =
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## Select a value by `key` from the Preserves dictionary `pr`.
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for (k, v) in pr.dict.items:
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if k == key: return v
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raise newException(KeyError, "value not in Preserves dictionary")
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proc `[]=`*[E](prs: var PreserveGen[E]; key, val: PreserveGen[E]) =
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## Insert `val` by `key` in the Preserves dictionary `prs`.
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for i in 0..prs.dict.high:
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if key < prs.dict[i].key:
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insert(prs.dict, [(key, val, )], i)
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proc `[]=`*(pr: var Preserve; key, val: Preserve) =
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## Insert `val` by `key` in the Preserves dictionary `pr`.
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for i in 0..pr.dict.high:
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if key < pr.dict[i].key:
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insert(pr.dict, [(key, val, )], i)
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return
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elif key == prs.dict[i].key:
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prs.dict[i].val = val
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elif key == pr.dict[i].key:
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pr.dict[i].val = val
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return
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prs.dict.add((key, val, ))
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pr.dict.add((key, val, ))
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proc symbol*(s: string; E = void): PreserveGen[E] {.inline.} =
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proc symbol*(s: string; E = void): Preserve {.inline.} =
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## Create a Preserves symbol value.
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PreserveGen[E](kind: pkSymbol, symbol: s)
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Preserve(kind: pkSymbol, symbol: s)
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proc initRecord*[E](label: PreserveGen[E]; args: varargs[PreserveGen[E]]): PreserveGen[E] =
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proc initRecord*(label: Preserve; args: varargs[Preserve]): Preserve =
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## Create a Preserves record value.
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result = Preserve(kind: pkRecord,
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record: newSeqOfCap[Preserve](1+args.len))
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@ -260,74 +233,74 @@ proc initRecord*(label: string; args: varargs[Preserve, toPreserve]): Preserve =
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assert($initRecord("foo", 1, 2.0) == "<foo 1 2.0f>")
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initRecord(symbol(label), args)
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proc initSet*(E = void): PreserveGen[E] = PreserveGen[E](kind: pkSet)
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proc initSet*(): Preserve = Preserve(kind: pkSet)
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## Create a Preserves set value.
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proc initDictionary*(E = void): PreserveGen[E] = PreserveGen[E](kind: pkDictionary)
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proc initDictionary*(): Preserve = Preserve(kind: pkDictionary)
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## Create a Preserves dictionary value.
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proc len*[E](prs: PreserveGen[E]): int =
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## Return the shallow count of values in ``prs``, that is the number of
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proc len*(pr: Preserve): int =
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## Return the shallow count of values in ``pr``, that is the number of
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## fields in a record, items in a sequence, items in a set, or key-value pairs
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## in a dictionary.
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case prs.kind
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of pkRecord: prs.record.len.pred
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of pkSequence: prs.sequence.len
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of pkSet: prs.set.len
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of pkDictionary: prs.dict.len
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case pr.kind
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of pkRecord: pr.record.len.pred
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of pkSequence: pr.sequence.len
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of pkSet: pr.set.len
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of pkDictionary: pr.dict.len
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else: 0
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iterator items*[E](prs: PreserveGen[E]): PreserveGen[E] =
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## Shallow iterator over `prs`, yield the fields in a record,
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iterator items*(pr: Preserve): Preserve =
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## Shallow iterator over `pr`, yield the fields in a record,
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## the items of a sequence, the items of a set, or the pairs
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## of a dictionary.
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case prs.kind
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case pr.kind
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of pkRecord:
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for i in 0..prs.record.high.pred:
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yield prs.record[i]
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for i in 0..pr.record.high.pred:
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yield pr.record[i]
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of pkSequence:
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for e in prs.sequence.items: yield e
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for e in pr.sequence.items: yield e
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of pkSet:
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for e in prs.set.items: yield e
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for e in pr.set.items: yield e
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of pkDictionary:
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for (k, v) in prs.dict.items:
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for (k, v) in pr.dict.items:
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yield k # key can be an arbitrary Preserve
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yield v
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else: discard
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proc isFalse*[E](prs: PreserveGen[E]): bool =
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## Check if ``prs`` is equivalent to the zero-initialized ``Preserve``.
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prs.kind == pkBoolean and prs.bool == false
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proc isFalse*(pr: Preserve): bool =
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## Check if ``pr`` is equivalent to the zero-initialized ``Preserve``.
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pr.kind == pkBoolean and pr.bool == false
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proc isSymbol*[E](prs: PreserveGen[E]; sym: string): bool =
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## Check if `prs` is a Preserves symbol.
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(prs.kind == pkSymbol) and (prs.symbol == sym)
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proc isSymbol*(pr: Preserve; sym: string): bool =
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## Check if `pr` is a Preserves symbol.
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(pr.kind == pkSymbol) and (pr.symbol == sym)
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proc isRecord*[E](prs: PreserveGen[E]): bool =
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## Check if `prs` is a Preserves record.
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if prs.kind == pkRecord:
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proc isRecord*(pr: Preserve): bool =
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## Check if `pr` is a Preserves record.
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if pr.kind == pkRecord:
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result = true
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assert(prs.record.len > 0)
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assert(pr.record.len > 0)
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proc isDictionary*[E](prs: PreserveGen[E]): bool =
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## Check if `prs` is a Preserves dictionary.
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prs.kind == pkDictionary
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proc isDictionary*(pr: Preserve): bool =
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## Check if `pr` is a Preserves dictionary.
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pr.kind == pkDictionary
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proc label*[E](prs: PreserveGen[E]): PreserveGen[E] {.inline.} =
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proc label*(pr: Preserve): Preserve {.inline.} =
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## Return the label of record value.
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prs.record[prs.record.high]
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pr.record[pr.record.high]
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proc arity*[E](prs: PreserveGen[E]): int {.inline.} =
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## Return the number of fields in record `prs`.
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pred(prs.record.len)
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proc arity*(pr: Preserve): int {.inline.} =
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## Return the number of fields in record `pr`.
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pred(pr.record.len)
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proc fields*[E](prs: PreserveGen[E]): seq[PreserveGen[E]] {.inline.} =
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proc fields*(pr: Preserve): seq[Preserve] {.inline.} =
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## Return the fields of a record value.
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prs.record[0..prs.record.high.pred]
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pr.record[0..pr.record.high.pred]
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iterator fields*[E](prs: PreserveGen[E]): PreserveGen[E] =
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iterator fields*(pr: Preserve): Preserve =
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## Iterate the fields of a record value.
|
||||
for i in 0..<prs.record.high: yield prs.record[i]
|
||||
for i in 0..<pr.record.high: yield pr.record[i]
|
||||
|
||||
proc writeVarint(s: Stream; n: int) =
|
||||
var n = n
|
||||
|
|
@ -349,39 +322,40 @@ proc readVarint(s: Stream): int =
|
|||
break
|
||||
shift.inc 7
|
||||
|
||||
proc write*[E](str: Stream; prs: PreserveGen[E]) =
|
||||
proc write*(str: Stream; pr: Preserve) =
|
||||
## Write the binary-encoding of a Preserves value to a stream.
|
||||
case prs.kind:
|
||||
if pr.embedded: str.write(0x86'u8)
|
||||
case pr.kind:
|
||||
of pkBoolean:
|
||||
case prs.bool
|
||||
case pr.bool
|
||||
of false: str.write(0x80'u8)
|
||||
of true: str.write(0x81'u8)
|
||||
of pkFloat:
|
||||
str.write(0x82'u8)
|
||||
when system.cpuEndian == bigEndian:
|
||||
str.write(prs.float)
|
||||
str.write(pr.float)
|
||||
else:
|
||||
var be: float32
|
||||
swapEndian32(be.addr, prs.float.unsafeAddr)
|
||||
swapEndian32(be.addr, pr.float.unsafeAddr)
|
||||
str.write(be)
|
||||
of pkDouble:
|
||||
str.write(0x83'u8)
|
||||
when system.cpuEndian == bigEndian:
|
||||
str.write(prs.double)
|
||||
str.write(pr.double)
|
||||
else:
|
||||
var be: float64
|
||||
swapEndian64(be.addr, prs.double.unsafeAddr)
|
||||
swapEndian64(be.addr, pr.double.unsafeAddr)
|
||||
str.write(be)
|
||||
of pkSignedInteger:
|
||||
if (-3 <= prs.int) and (prs.int <= 12):
|
||||
str.write(0x90'i8 or int8(if prs.int < 0: prs.int + 16 else: prs.int))
|
||||
if (-3 <= pr.int) and (pr.int <= 12):
|
||||
str.write(0x90'i8 or int8(if pr.int < 0: pr.int + 16 else: pr.int))
|
||||
else:
|
||||
var bitCount = 1'u8
|
||||
if prs.int < 0:
|
||||
while ((not prs.int) shr bitCount) != 0:
|
||||
if pr.int < 0:
|
||||
while ((not pr.int) shr bitCount) != 0:
|
||||
inc(bitCount)
|
||||
else:
|
||||
while (prs.int shr bitCount) != 0:
|
||||
while (pr.int shr bitCount) != 0:
|
||||
inc(bitCount)
|
||||
var byteCount = (bitCount + 8) div 8
|
||||
str.write(0xa0'u8 or (byteCount - 1))
|
||||
|
|
@ -389,13 +363,13 @@ proc write*[E](str: Stream; prs: PreserveGen[E]) =
|
|||
if n > 0:
|
||||
write(n.pred, i shr 8)
|
||||
str.write(i.uint8)
|
||||
write(byteCount, prs.int)
|
||||
write(byteCount, pr.int)
|
||||
of pkBigInteger:
|
||||
doAssert(Negative notin prs.bigint.flags, "negative big integers not implemented")
|
||||
var bytes = newSeqOfCap[uint8](prs.bigint.limbs.len * 4)
|
||||
doAssert(Negative notin pr.bigint.flags, "negative big integers not implemented")
|
||||
var bytes = newSeqOfCap[uint8](pr.bigint.limbs.len * 4)
|
||||
var begun = false
|
||||
for i in countdown(prs.bigint.limbs.high, 0):
|
||||
let limb = prs.bigint.limbs[i]
|
||||
for i in countdown(pr.bigint.limbs.high, 0):
|
||||
let limb = pr.bigint.limbs[i]
|
||||
for j in countdown(24, 0, 8):
|
||||
let b = uint8(limb shr j)
|
||||
begun = begun or (b != 0)
|
||||
|
|
@ -409,118 +383,110 @@ proc write*[E](str: Stream; prs: PreserveGen[E]) =
|
|||
str.write(cast[string](bytes))
|
||||
of pkString:
|
||||
str.write(0xb1'u8)
|
||||
str.writeVarint(prs.string.len)
|
||||
str.write(prs.string)
|
||||
str.writeVarint(pr.string.len)
|
||||
str.write(pr.string)
|
||||
of pkByteString:
|
||||
str.write(0xb2'u8)
|
||||
str.writeVarint(prs.bytes.len)
|
||||
str.write(cast[string](prs.bytes))
|
||||
str.writeVarint(pr.bytes.len)
|
||||
str.write(cast[string](pr.bytes))
|
||||
of pkSymbol:
|
||||
str.write(0xb3'u8)
|
||||
str.writeVarint(prs.symbol.len)
|
||||
str.write(prs.symbol)
|
||||
str.writeVarint(pr.symbol.len)
|
||||
str.write(pr.symbol)
|
||||
of pkRecord:
|
||||
assert(prs.record.len > 0)
|
||||
assert(pr.record.len > 0)
|
||||
str.write(0xb4'u8)
|
||||
str.write(prs.record[prs.record.high])
|
||||
for i in 0..<prs.record.high:
|
||||
str.write(prs.record[i])
|
||||
str.write(pr.record[pr.record.high])
|
||||
for i in 0..<pr.record.high:
|
||||
str.write(pr.record[i])
|
||||
str.write(0x84'u8)
|
||||
of pkSequence:
|
||||
str.write(0xb5'u8)
|
||||
for e in prs.sequence:
|
||||
for e in pr.sequence:
|
||||
str.write(e)
|
||||
str.write(0x84'u8)
|
||||
of pkSet:
|
||||
str.write(0xb6'u8)
|
||||
for val in prs.set.items:
|
||||
for val in pr.set.items:
|
||||
str.write(val)
|
||||
str.write(0x84'u8)
|
||||
of pkDictionary:
|
||||
str.write(0xb7'u8)
|
||||
for (key, value) in prs.dict.items:
|
||||
for (key, value) in pr.dict.items:
|
||||
str.write(key)
|
||||
str.write(value)
|
||||
str.write(0x84'u8)
|
||||
of pkEmbedded:
|
||||
str.write(0x86'u8)
|
||||
when E is void:
|
||||
str.write(0x80'u8)
|
||||
else:
|
||||
str.write(prs.embedded.toPreserve)
|
||||
|
||||
proc encode*[E](prs: PreserveGen[E]): string =
|
||||
proc encode*(pr: Preserve): seq[byte] =
|
||||
## Return the binary-encoding of a Preserves value.
|
||||
let s = newStringStream()
|
||||
s.write prs
|
||||
s.write pr
|
||||
s.setPosition 0
|
||||
result = s.readAll
|
||||
result = cast[seq[byte]](s.readAll)
|
||||
|
||||
proc decodePreserves*(s: Stream; E = void): PreserveGen[E] =
|
||||
proc decodePreserves*(s: Stream): Preserve =
|
||||
## Decode a Preserves value from a binary-encoded stream.
|
||||
## ``E`` is the Nim type of embedded values where ``void``
|
||||
## selects a ``Preserve`` representation.
|
||||
type Value = PreserveGen[E]
|
||||
proc assertStream(check: bool) =
|
||||
if not check:
|
||||
raise newException(ValueError, "invalid Preserves stream")
|
||||
const endMarker = 0x84
|
||||
let tag = s.readUint8()
|
||||
case tag
|
||||
of 0x80: result = Value(kind: pkBoolean, bool: false)
|
||||
of 0x81: result = Value(kind: pkBoolean, bool: true)
|
||||
of 0x80: result = Preserve(kind: pkBoolean, bool: false)
|
||||
of 0x81: result = Preserve(kind: pkBoolean, bool: true)
|
||||
of 0x82:
|
||||
when system.cpuEndian == bigEndian:
|
||||
result = Value(kind: pkFloat, float: s.readFloat32())
|
||||
result = Preserve(kind: pkFloat, float: s.readFloat32())
|
||||
else:
|
||||
result = Value(kind: pkFloat)
|
||||
result = Preserve(kind: pkFloat)
|
||||
var be = s.readFloat32()
|
||||
swapEndian32(result.float.addr, be.addr)
|
||||
of 0x83:
|
||||
when system.cpuEndian == bigEndian:
|
||||
result = Value(kind: pkDouble, double: s.readFloat64())
|
||||
result = Preserve(kind: pkDouble, double: s.readFloat64())
|
||||
else:
|
||||
result = Value(kind: pkDouble)
|
||||
result = Preserve(kind: pkDouble)
|
||||
var be = s.readFloat64()
|
||||
swapEndian64(result.double.addr, be.addr)
|
||||
of 0x86:
|
||||
result = Value(kind: pkEmbedded, embedded: decodePreserves(s, E))
|
||||
result = decodePreserves(s)
|
||||
result.embedded = true
|
||||
of 0xb1:
|
||||
result = Value(kind: pkString)
|
||||
result = Preserve(kind: pkString)
|
||||
let len = s.readVarint()
|
||||
result.string = s.readStr(len)
|
||||
of 0xb2:
|
||||
result = Value(kind: pkByteString)
|
||||
result = Preserve(kind: pkByteString)
|
||||
let len = s.readVarint()
|
||||
result.bytes = cast[seq[byte]](s.readStr(len))
|
||||
of 0xb3:
|
||||
let len = s.readVarint()
|
||||
result = Value(kind: pkSymbol, symbol: s.readStr(len))
|
||||
result = Preserve(kind: pkSymbol, symbol: s.readStr(len))
|
||||
of 0xb4:
|
||||
result = Value(kind: pkRecord)
|
||||
var label = decodePreserves(s, E)
|
||||
result = Preserve(kind: pkRecord)
|
||||
var label = decodePreserves(s)
|
||||
while s.peekUint8() != endMarker:
|
||||
result.record.add decodePreserves(s, E)
|
||||
result.record.add decodePreserves(s)
|
||||
result.record.add(move label)
|
||||
discard s.readUint8()
|
||||
of 0xb5:
|
||||
result = Value(kind: pkSequence)
|
||||
result = Preserve(kind: pkSequence)
|
||||
while s.peekUint8() != endMarker:
|
||||
result.sequence.add decodePreserves(s, E)
|
||||
result.sequence.add decodePreserves(s)
|
||||
discard s.readUint8()
|
||||
of 0xb6:
|
||||
result = Value(kind: pkSet)
|
||||
result = Preserve(kind: pkSet)
|
||||
while s.peekUint8() != endMarker:
|
||||
incl(result, decodePreserves(s, E))
|
||||
incl(result, decodePreserves(s))
|
||||
discard s.readUint8()
|
||||
of 0xb7:
|
||||
result = Value(kind: pkDictionary)
|
||||
result = Preserve(kind: pkDictionary)
|
||||
while s.peekUint8() != endMarker:
|
||||
result[decodePreserves(s, E)] = decodePreserves(s, E)
|
||||
result[decodePreserves(s)] = decodePreserves(s)
|
||||
discard s.readUint8()
|
||||
of 0xb0:
|
||||
let len = s.readVarint()
|
||||
result = Value(kind: pkBigInteger, bigint: initBigint 0)
|
||||
result = Preserve(kind: pkBigInteger, bigint: initBigint 0)
|
||||
for _ in 1..len:
|
||||
result.bigint = (result.bigint shl 8) + s.readUint8().int32
|
||||
of endMarker:
|
||||
|
|
@ -529,29 +495,29 @@ proc decodePreserves*(s: Stream; E = void): PreserveGen[E] =
|
|||
case 0xf0 and tag
|
||||
of 0x90:
|
||||
var n = tag.BiggestInt
|
||||
result = Value(kind: pkSignedInteger,
|
||||
result = Preserve(kind: pkSignedInteger,
|
||||
int: n - (if n > 0x9c: 0xa0 else: 0x90))
|
||||
of 0xa0:
|
||||
let len = (tag.int and 0x0f) + 1
|
||||
if len <= 8:
|
||||
result = Value(kind: pkSignedInteger, int: s.readUint8().BiggestInt)
|
||||
result = Preserve(kind: pkSignedInteger, int: s.readUint8().BiggestInt)
|
||||
if (result.int and 0x80) != 0: result.int.dec(0x100)
|
||||
for i in 1..<len:
|
||||
result.int = (result.int shl 8) or s.readUint8().BiggestInt
|
||||
else:
|
||||
result = Value(kind: pkBigInteger)
|
||||
result = Preserve(kind: pkBigInteger)
|
||||
for i in 0..<len:
|
||||
result.bigint = (result.bigint shl 8) + s.readUint8().int32
|
||||
else:
|
||||
assertStream(false)
|
||||
|
||||
proc decodePreserves*(s: string, E = void): PreserveGen[E] =
|
||||
proc decodePreserves*(s: string): Preserve =
|
||||
## Decode a string of binary-encoded Preserves.
|
||||
s.newStringStream.decodePreserves E
|
||||
s.newStringStream.decodePreserves
|
||||
|
||||
proc decodePreserves*(s: seq[byte], E = void): PreserveGen[E] =
|
||||
proc decodePreserves*(s: seq[byte]): Preserve =
|
||||
## Decode a byte-string of binary-encoded Preserves.
|
||||
cast[string](s).decodePreserves E
|
||||
cast[string](s).decodePreserves
|
||||
|
||||
template record*(label: string) {.pragma.}
|
||||
## Serialize this object or tuple as a record. See ``toPreserve``.
|
||||
|
|
@ -559,50 +525,46 @@ template record*(label: string) {.pragma.}
|
|||
template unpreservable*() {.pragma.}
|
||||
## Pragma to forbid a type from being converted by ``toPreserve``.
|
||||
|
||||
proc toPreserve*[T](x: T; E = void): PreserveGen[E] =
|
||||
proc toPreserve*[T](x: T): Preserve =
|
||||
## Serializes ``x`` to Preserves. Can be customized by defining
|
||||
## ``toPreserveHook(x: T)`` in the calling scope.
|
||||
## ``E`` is the embedded type where ``void`` returns embedded
|
||||
## values as Preserves.
|
||||
type Value = PreserveGen[E]
|
||||
when (T is Value): result = x
|
||||
elif T is E: result = Value(kind: pkEmbedded, embedded: x)
|
||||
when (T is Preserve): result = x
|
||||
elif compiles(toPreserveHook(x)):
|
||||
result = toPreserveHook(x)
|
||||
elif T is Bigint:
|
||||
result = Value(kind: pkBigInteger, bigint: x)
|
||||
result = Preserve(kind: pkBigInteger, bigint: x)
|
||||
elif T is seq[byte]:
|
||||
result = Value(kind: pkByteString, bytes: x)
|
||||
result = Preserve(kind: pkByteString, bytes: x)
|
||||
elif T is array | seq:
|
||||
result = Value(kind: pkSequence)
|
||||
for v in x.items: result.sequence.add(toPreserve(v, E))
|
||||
result = Preserve(kind: pkSequence)
|
||||
for v in x.items: result.sequence.add(toPreserve(v))
|
||||
elif T is bool:
|
||||
result = Value(kind: pkBoolean, bool: x)
|
||||
result = Preserve(kind: pkBoolean, bool: x)
|
||||
elif T is distinct:
|
||||
result = toPreserve(x.distinctBase)
|
||||
elif T is float:
|
||||
result = Value(kind: pkFloat, float: x)
|
||||
result = Preserve(kind: pkFloat, float: x)
|
||||
elif T is float64:
|
||||
result = Value(kind: pkDouble, double: x)
|
||||
result = Preserve(kind: pkDouble, double: x)
|
||||
elif T is object | tuple:
|
||||
when T.hasCustomPragma(unpreservable): {.fatal: "unpreservable type".}
|
||||
elif T.hasCustomPragma(record):
|
||||
result = Value(kind: pkRecord)
|
||||
result = Preserve(kind: pkRecord)
|
||||
for _, f in x.fieldPairs: result.record.add(toPreserve(f))
|
||||
result.record.add(symbol(T.getCustomPragmaVal(record)))
|
||||
else:
|
||||
result = Value(kind: pkDictionary)
|
||||
result = Preserve(kind: pkDictionary)
|
||||
for k, v in x.fieldPairs:
|
||||
result[symbol(k, E)] = toPreserve(v, E)
|
||||
result[symbol(k)] = toPreserve(v)
|
||||
elif T is Ordinal:
|
||||
result = Value(kind: pkSignedInteger, int: x.ord.BiggestInt)
|
||||
result = Preserve(kind: pkSignedInteger, int: x.ord.BiggestInt)
|
||||
elif T is ptr | ref:
|
||||
if system.`==`(x, nil): result = symbol("null", E)
|
||||
if system.`==`(x, nil): result = symbol("null")
|
||||
else: result = toPreserve(x[])
|
||||
elif T is string:
|
||||
result = Value(kind: pkString, string: x)
|
||||
result = Preserve(kind: pkString, string: x)
|
||||
elif T is SomeInteger:
|
||||
result = Value(kind: pkSignedInteger, int: x.BiggestInt)
|
||||
result = Preserve(kind: pkSignedInteger, int: x.BiggestInt)
|
||||
else:
|
||||
raiseAssert("unpreservable type" & $T)
|
||||
|
||||
|
|
@ -613,9 +575,9 @@ proc toPreserveHook*[T](set: HashSet[T]): Preserve =
|
|||
proc toPreserveHook*[A, B](table: Table[A, B]|TableRef[A, B]): Preserve =
|
||||
## Hook for preserving ``Table``.
|
||||
result = Preserve(kind: pkDictionary, dict: initTable[Preserve, Preserve](table.len))
|
||||
for k, v in table.pairs: result.dict.add((toPreserve(k), toPreserve(v), ))
|
||||
for k, v in table.pairs: result.dict.add((k.toPreserve, v.toPreserve, ))
|
||||
|
||||
proc fromPreserve*[E, T](v: var T; prs: PreserveGen[E]): bool =
|
||||
proc fromPreserve*[T](v: var T; pr: Preserve): bool =
|
||||
## Inplace version of `preserveTo`. Returns ``true`` on
|
||||
## a complete match, otherwise returns ``false``.
|
||||
# TODO: {.raises: [].}
|
||||
|
|
@ -627,93 +589,93 @@ proc fromPreserve*[E, T](v: var T; prs: PreserveGen[E]): bool =
|
|||
assert(fromPreserve(foo, parsePreserves("""<foo 1 2>""")))
|
||||
assert(foo.x == 1)
|
||||
assert(foo.y == 2)
|
||||
type Value = PreserveGen[E]
|
||||
type Value = Preserve
|
||||
when T is Value:
|
||||
v = prs
|
||||
v = pr
|
||||
result = true
|
||||
elif compiles(fromPreserveHook(v, prs)):
|
||||
result = fromPreserveHook(v, prs)
|
||||
elif compiles(fromPreserveHook(v, pr)):
|
||||
result = fromPreserveHook(v, pr)
|
||||
elif T is Bigint:
|
||||
case prs.kind
|
||||
case pr.kind
|
||||
of pkSignedInteger:
|
||||
v = initBigint(prs.int)
|
||||
v = initBigint(pr.int)
|
||||
result = true
|
||||
of pkBigInteger:
|
||||
v = prs.bigint
|
||||
v = pr.bigint
|
||||
result = true
|
||||
else: disard
|
||||
elif T is bool:
|
||||
if prs.kind == pkBoolean:
|
||||
v = prs.bool
|
||||
if pr.kind == pkBoolean:
|
||||
v = pr.bool
|
||||
result = true
|
||||
elif T is SomeInteger:
|
||||
if prs.kind == pkSignedInteger:
|
||||
v = T(prs.int)
|
||||
if pr.kind == pkSignedInteger:
|
||||
v = T(pr.int)
|
||||
result = true
|
||||
elif T is float:
|
||||
if prs.kind == pkFloat:
|
||||
v = prs.float
|
||||
if pr.kind == pkFloat:
|
||||
v = pr.float
|
||||
result = true
|
||||
elif T is seq:
|
||||
if T is seq[byte] and prs.kind == pkByteString:
|
||||
v = prs.bytes
|
||||
if T is seq[byte] and pr.kind == pkByteString:
|
||||
v = pr.bytes
|
||||
result = true
|
||||
elif prs.kind == pkSequence:
|
||||
v.setLen(prs.len)
|
||||
elif pr.kind == pkSequence:
|
||||
v.setLen(pr.len)
|
||||
result = true
|
||||
for i, e in prs.sequence:
|
||||
for i, e in pr.sequence:
|
||||
result = result and fromPreserve(v[i], e)
|
||||
elif T is float64:
|
||||
case prs.kind
|
||||
case pr.kind
|
||||
of pkFloat:
|
||||
v = prs.float
|
||||
v = pr.float
|
||||
result = true
|
||||
of pkDouble:
|
||||
v = prs.double
|
||||
v = pr.double
|
||||
result = true
|
||||
elif T is object | tuple:
|
||||
case prs.kind
|
||||
case pr.kind
|
||||
of pkRecord:
|
||||
when T.hasCustomPragma(record):
|
||||
if prs.record[prs.record.high].isSymbol T.getCustomPragmaVal(record):
|
||||
if pr.record[pr.record.high].isSymbol T.getCustomPragmaVal(record):
|
||||
result = true
|
||||
var i = 0
|
||||
for fname, field in v.fieldPairs:
|
||||
if not result or (i == prs.record.high): break
|
||||
result = result and fromPreserve(field, prs.record[i])
|
||||
if not result or (i == pr.record.high): break
|
||||
result = result and fromPreserve(field, pr.record[i])
|
||||
inc(i)
|
||||
result = result and (i == prs.record.high) # arity equivalence check=
|
||||
result = result and (i == pr.record.high) # arity equivalence check=
|
||||
of pkDictionary:
|
||||
result = true
|
||||
var fieldCount = 0
|
||||
for key, val in v.fieldPairs:
|
||||
inc fieldCount
|
||||
for (pk, pv) in prs.dict.items:
|
||||
var sym = symbol(key, E)
|
||||
for (pk, pv) in pr.dict.items:
|
||||
var sym = symbol(key)
|
||||
if sym == pk:
|
||||
result = result and fromPreserve(val, pv)
|
||||
break
|
||||
result = result and prs.dict.len == fieldCount
|
||||
result = result and pr.dict.len == fieldCount
|
||||
else: discard
|
||||
elif T is Ordinal | SomeInteger:
|
||||
if prs.kind == pkSignedInteger:
|
||||
v = (T)prs.int
|
||||
if pr.kind == pkSignedInteger:
|
||||
v = (T)pr.int
|
||||
result = true
|
||||
elif T is ref:
|
||||
if prs != symbol("null", E):
|
||||
if pr != symbol("null"):
|
||||
new v
|
||||
result = fromPreserve(v[], prs)
|
||||
result = fromPreserve(v[], pr)
|
||||
elif T is string:
|
||||
if prs.kind == pkString:
|
||||
v = prs.string
|
||||
if pr.kind == pkString:
|
||||
v = pr.string
|
||||
result = true
|
||||
elif T is distinct:
|
||||
result = fromPreserve(result.distinctBase, prs)
|
||||
result = fromPreserve(result.distinctBase, pr)
|
||||
else:
|
||||
raiseAssert("no conversion of type Preserve to " & $T)
|
||||
if not result: reset v
|
||||
|
||||
proc preserveTo*[E](prs: PreserveGen[E]; T: typedesc): Option[T] =
|
||||
proc preserveTo*(pr: Preserve; T: typedesc): Option[T] =
|
||||
## Reverse of `toPreserve`.
|
||||
##
|
||||
# TODO: {.raises: [].}
|
||||
|
|
@ -726,70 +688,71 @@ proc preserveTo*[E](prs: PreserveGen[E]; T: typedesc): Option[T] =
|
|||
assert(parsePreserves("""<bar 1 2>""").preserveTo(Foo).isNone)
|
||||
assert(parsePreserves("""<foo 1 2>""").preserveTo(Foo).isSome)
|
||||
var v: T
|
||||
if fromPreserve(v, prs):
|
||||
if fromPreserve(v, pr):
|
||||
result = some(move v)
|
||||
|
||||
proc fromPreserveHook*[A,B](t: var Table[A,B]|TableRef[A,B]; prs: Preserve): bool =
|
||||
if prs.isDictionary:
|
||||
for k, v in prs.pairs:
|
||||
t[preserveTo(k, A)] = preserveTo(k, B)
|
||||
proc fromPreserveHook*[A,B,E](t: var Table[A,B]|TableRef[A,B]; pr: Preserve): bool =
|
||||
if pr.isDictionary:
|
||||
for k, v in pr.pairs:
|
||||
t[preserveTo(k, A)] = preserveTo(v, B)
|
||||
result = true
|
||||
|
||||
proc concat[E](result: var string; prs: PreserveGen[E]) =
|
||||
case prs.kind:
|
||||
proc concat(result: var string; pr: Preserve) =
|
||||
if pr.embedded: result.add("#!")
|
||||
case pr.kind:
|
||||
of pkBoolean:
|
||||
case prs.bool
|
||||
case pr.bool
|
||||
of false: result.add "#f"
|
||||
of true: result.add "#t"
|
||||
of pkFloat:
|
||||
result.add($prs.float & "f")
|
||||
result.add($pr.float & "f")
|
||||
of pkDouble:
|
||||
result.add $prs.double
|
||||
result.add $pr.double
|
||||
of pkSignedInteger:
|
||||
result.add $prs.int
|
||||
result.add $pr.int
|
||||
of pkBigInteger:
|
||||
result.add $prs.bigint
|
||||
result.add $pr.bigint
|
||||
of pkString:
|
||||
result.add escapeJson(prs.string)
|
||||
result.add escapeJson(pr.string)
|
||||
of pkByteString:
|
||||
for b in prs.bytes:
|
||||
for b in pr.bytes:
|
||||
if b.char notin {'\20'..'\21', '#'..'[', ']'..'~'}:
|
||||
result.add("#[") #]#
|
||||
result.add(base64.encode(prs.bytes))
|
||||
result.add(base64.encode(pr.bytes))
|
||||
result.add(']')
|
||||
return
|
||||
result.add("#\"")
|
||||
result.add(cast[string](prs.bytes))
|
||||
result.add(cast[string](pr.bytes))
|
||||
result.add('"')
|
||||
of pkSymbol:
|
||||
result.add(escapeJsonUnquoted(prs.symbol))
|
||||
result.add(escapeJsonUnquoted(pr.symbol))
|
||||
of pkRecord:
|
||||
assert(prs.record.len > 0)
|
||||
assert(pr.record.len > 0)
|
||||
result.add('<')
|
||||
result.concat(prs.record[prs.record.high])
|
||||
for i in 0..<prs.record.high:
|
||||
result.concat(pr.record[pr.record.high])
|
||||
for i in 0..<pr.record.high:
|
||||
result.add(' ')
|
||||
result.concat(prs.record[i])
|
||||
result.concat(pr.record[i])
|
||||
result.add('>')
|
||||
of pkSequence:
|
||||
result.add('[')
|
||||
for i, val in prs.sequence:
|
||||
for i, val in pr.sequence:
|
||||
if i > 0:
|
||||
result.add(' ')
|
||||
result.concat(val)
|
||||
result.add(']')
|
||||
of pkSet:
|
||||
result.add("#{")
|
||||
for val in prs.set.items:
|
||||
for val in pr.set.items:
|
||||
result.concat(val)
|
||||
result.add(' ')
|
||||
if prs.set.len > 1:
|
||||
if pr.set.len > 1:
|
||||
result.setLen(result.high)
|
||||
result.add('}')
|
||||
of pkDictionary:
|
||||
result.add('{')
|
||||
var i = 0
|
||||
for (key, value) in prs.dict.items:
|
||||
for (key, value) in pr.dict.items:
|
||||
if i > 0:
|
||||
result.add(' ')
|
||||
result.concat(key)
|
||||
|
|
@ -797,12 +760,6 @@ proc concat[E](result: var string; prs: PreserveGen[E]) =
|
|||
result.concat(value)
|
||||
inc i
|
||||
result.add('}')
|
||||
of pkEmbedded:
|
||||
result.add("#!")
|
||||
when E is void:
|
||||
result.add("#f")
|
||||
else:
|
||||
result.add($prs.embedded)
|
||||
|
||||
proc `$`*[E](prs: PreserveGen[E]): string = concat(result, prs)
|
||||
## Generate the textual representation of ``prs``.
|
||||
proc `$`*(pr: Preserve): string = concat(result, pr)
|
||||
## Generate the textual representation of ``pr``.
|
||||
|
|
|
|||
|
|
@ -28,45 +28,45 @@ proc toPreserveHook*(js: JsonNode): Preserve =
|
|||
for i, e in js.elems:
|
||||
result.sequence[i] = toPreserveHook(e)
|
||||
|
||||
proc toJsonHook*(prs: Preserve): JsonNode =
|
||||
proc fromPreserveHook*(js: var JsonNode; prs: Preserve): bool =
|
||||
case prs.kind:
|
||||
of pkBoolean:
|
||||
result = newJBool(prs.bool)
|
||||
js = newJBool(prs.bool)
|
||||
of pkFloat:
|
||||
result = newJFloat(prs.float)
|
||||
js = newJFloat(prs.float)
|
||||
of pkDouble:
|
||||
result = newJFloat(prs.double)
|
||||
js = newJFloat(prs.double)
|
||||
of pkSignedInteger:
|
||||
result = newJInt(prs.int)
|
||||
of pkBigInteger:
|
||||
raise newException(ValueError, "cannot convert big integer to JSON")
|
||||
js = newJInt(prs.int)
|
||||
of pkString:
|
||||
result = newJString(prs.string)
|
||||
of pkByteString:
|
||||
raise newException(ValueError, "cannot convert bytes to JSON")
|
||||
js = newJString(prs.string)
|
||||
of pkSymbol:
|
||||
case prs.symbol
|
||||
of "false":
|
||||
result = newJBool(false)
|
||||
js = newJBool(false)
|
||||
of "true":
|
||||
result = newJBool(true)
|
||||
js = newJBool(true)
|
||||
of "null":
|
||||
result = newJNull()
|
||||
js = newJNull()
|
||||
else:
|
||||
raise newException(ValueError, "cannot convert symbol to JSON")
|
||||
of pkRecord:
|
||||
raise newException(ValueError, "cannot convert record to JSON")
|
||||
return false
|
||||
of pkSequence:
|
||||
result = newJArray()
|
||||
for val in prs.sequence:
|
||||
result.add(toJsonHook(val))
|
||||
of pkSet:
|
||||
raise newException(ValueError, "cannot convert set to JSON")
|
||||
js = newJArray()
|
||||
js.elems.setLen(prs.sequence.len)
|
||||
for i, val in prs.sequence:
|
||||
if not fromPreserve(js.elems[i], val):
|
||||
return false
|
||||
of pkDictionary:
|
||||
result = newJObject()
|
||||
js = newJObject()
|
||||
for (key, val) in prs.dict.items:
|
||||
if key.kind != pkString:
|
||||
raise newException(ValueError, "cannot convert non-string dictionary key to JSON")
|
||||
result[key.string] = toJsonHook(val)
|
||||
of pkEmbedded:
|
||||
raise newException(ValueError, "cannot convert embedded value to JSON")
|
||||
return false
|
||||
var jsVal: JsonNode
|
||||
if not fromPreserve(jsVal, val): return false
|
||||
js[key.string] = jsVal
|
||||
else: return false
|
||||
true
|
||||
|
||||
proc toJsonHook*(pr: Preserve): JsonNode =
|
||||
if not fromPreserve(result, pr):
|
||||
raise newException(ValueError, "cannot convert Preserves value to JSON")
|
||||
|
|
|
|||
|
|
@ -89,9 +89,9 @@ proc parsePreserves*(text: string): Preserve {.gcsafe.} =
|
|||
pushStack Preserve(kind: pkSymbol, symbol: $0)
|
||||
|
||||
Preserves.Embedded <- Preserves.Embedded:
|
||||
pushStack Preserve(
|
||||
kind: pkEmbedded,
|
||||
embedded: stack.pop.value)
|
||||
var v = stack.pop.value
|
||||
v.embedded = true
|
||||
pushStack v
|
||||
|
||||
Preserves.Compact <- Preserves.Compact:
|
||||
pushStack decodePreserves(stack.pop.value.bytes)
|
||||
|
|
|
|||
|
|
@ -4,9 +4,9 @@
|
|||
import std/[macros, typetraits]
|
||||
import ../preserves
|
||||
|
||||
type RecordClass*[EmbeddedType] = object
|
||||
type RecordClass* = object
|
||||
## Type of a preserves record.
|
||||
label*: PreserveGen[EmbeddedType]
|
||||
label*: Preserve
|
||||
arity*: Natural
|
||||
|
||||
proc `$`*(rec: RecordClass): string =
|
||||
|
|
@ -18,17 +18,17 @@ proc isClassOf*(rec: RecordClass; val: Preserve): bool =
|
|||
assert(val.record.len > 0)
|
||||
result = val.label == rec.label and rec.arity == val.arity
|
||||
|
||||
proc classOf*[E](val: PreserveGen[E]): RecordClass[E] =
|
||||
proc classOf*(val: Preserve): RecordClass =
|
||||
## Derive the ``RecordClass`` of ``val``.
|
||||
if val.kind != pkRecord:
|
||||
raise newException(Defect, "cannot derive class of non-record value " & $val)
|
||||
assert(val.record.len > 0)
|
||||
RecordClass[E](label: val.label, arity: val.arity)
|
||||
RecordClass(label: val.label, arity: val.arity)
|
||||
|
||||
proc classOf*[T](x: T; E = void): RecordClass[E] =
|
||||
proc classOf*[T](x: T): RecordClass =
|
||||
## Derive the ``RecordClass`` of ``x``.
|
||||
when not T.hasCustomPragma(record): {.error: "no {.record.} pragma on " & $T.}
|
||||
result.label = preserves.symbol(T.getCustomPragmaVal(record), E)
|
||||
result.label = preserves.symbol(T.getCustomPragmaVal(record))
|
||||
for k, v in x.fieldPairs: inc(result.arity)
|
||||
|
||||
proc classOf*(T: typedesc[tuple]): RecordClass =
|
||||
|
|
|
|||
|
|
@ -37,4 +37,4 @@ suite "parse":
|
|||
let
|
||||
a = encode test
|
||||
b = bin
|
||||
check(a.toHex == b.toHex)
|
||||
check(cast[string](a).toHex == b.toHex)
|
||||
|
|
|
|||
Loading…
Reference in New Issue