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register callback for marshal in VM (#19578)

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* register callback for marshal in VM

* remove unrelated code

* polish

* more tests

* more tests

* add loadVM and toVM
This commit is contained in:
flywind 2022-03-09 01:12:31 +08:00 • committed by GitHub
commit 8f9dd5b349
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6 changed files with 96 additions and 59 deletions
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28
lib/pure/marshal.nim
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@ -298,6 +298,9 @@ proc store*[T](s: Stream, data: T) =
shallowCopy(d, data)
storeAny(s, toAny(d), stored)
proc loadVM[T](typ: typedesc[T], x: T): string =
discard "the implementation is in the compiler/vmops"
proc `$$`*[T](x: T): string =
## Returns a string representation of `x` (serialization, marshalling).
##
@ -313,12 +316,18 @@ proc `$$`*[T](x: T): string =
let y = $$x
assert y == """{"id": 1, "bar": "baz"}"""
var stored = initIntSet()
var d: T
shallowCopy(d, x)
var s = newStringStream()
storeAny(s, toAny(d), stored)
result = s.data
when nimvm:
result = loadVM(T, x)
else:
var stored = initIntSet()
var d: T
shallowCopy(d, x)
var s = newStringStream()
storeAny(s, toAny(d), stored)
result = s.data
proc toVM[T](typ: typedesc[T], data: string): T =
discard "the implementation is in the compiler/vmops"
proc to*[T](data: string): T =
## Reads data and transforms it to a type `T` (deserialization, unmarshalling).
@ -335,5 +344,8 @@ proc to*[T](data: string): T =
assert z.id == 1
assert z.bar == "baz"
var tab = initTable[BiggestInt, pointer]()
loadAny(newStringStream(data), toAny(result), tab)
when nimvm:
result = toVM(T, data)
else:
var tab = initTable[BiggestInt, pointer]()
loadAny(newStringStream(data), toAny(result), tab)