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Finally got variant objects to work 

* may still require some polish before merging
This commit is contained in:
Felix Krause 2016-05-25 23:32:49 +02:00
parent 592158fad0
commit a0c435d6eb
1 changed files with 21 additions and 15 deletions
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32
private/serialization.nim
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@ -72,8 +72,9 @@ proc constructObject*[T: int8|int16|int32|int64](
constructScalarItem(s, item, T):
result = T(parseBiggestInt(item.scalarContent))
template constructObject*(s: var YamlStream, c: ConstructionContext,
result: var int) =
proc constructObject*(s: var YamlStream, c: ConstructionContext,
result: var int)
{.raises: [YamlConstructionError, YamlStreamError], inline.} =
## constructs an integer of architecture-defined length by loading it into
## int32 and then converting it.
var i32Result: int32
@ -86,8 +87,9 @@ proc representObject*[T: int8|int16|int32|int64](value: T, ts: TagStyle,
result = iterator(): YamlStreamEvent =
yield scalarEvent($value, tag, yAnchorNone)
template representObject*(value: int, tagStyle: TagStyle,
c: SerializationContext, tag: TagId): RawYamlStream =
proc representObject*(value: int, tagStyle: TagStyle,
c: SerializationContext, tag: TagId): RawYamlStream
{.raises: [], inline.}=
## represent an integer of architecture-defined length by casting it to int32.
## on 64-bit systems, this may cause a type conversion error.
@ -110,8 +112,9 @@ proc constructObject*[T: uint8|uint16|uint32|uint64](
constructScalarItem(s, item, T):
result = T(parseBiggestUInt(item.scalarContent))
template constructObject*(s: var YamlStream, c: ConstructionContext,
result: var uint) =
proc constructObject*(s: var YamlStream, c: ConstructionContext,
result: var uint)
{.raises: [YamlConstructionError, YamlStreamError], inline.} =
## represent an unsigned integer of architecture-defined length by loading it
## into uint32 and then converting it.
var u32Result: uint32
@ -124,11 +127,11 @@ proc representObject*[T: uint8|uint16|uint32|uint64](value: T, ts: TagStyle,
result = iterator(): YamlStreamEvent =
yield scalarEvent($value, tag, yAnchorNone)
template representObject*(value: uint, ts: TagStyle, c: SerializationContext,
tag: TagId): RawYamlStream =
proc representObject*(value: uint, ts: TagStyle, c: SerializationContext,
tag: TagId): RawYamlStream {.raises: [], inline.} =
## represent an unsigned integer of architecture-defined length by casting it
## to int32. on 64-bit systems, this may cause a type conversion error.
representObject(uint32(value), tagStyle, c, tag)
representObject(uint32(value), ts, c, tag)
proc constructObject*[T: float|float32|float64](
s: var YamlStream, c: ConstructionContext, result: var T)
@ -384,13 +387,16 @@ proc representObject*[K, V](value: OrderedTable[K, V], ts: TagStyle,
yield endMapEvent()
yield endSeqEvent()
template yamlTag*(T: typedesc[object|enum]): expr =
var uri = when compiles(yamlTag(T)): yamlTag(T) else:
"!nim:custom:" & (typetraits.name(type(T)))
proc yamlTag*(T: typedesc[object|enum]):
TagId {.inline, noSideEffect, raises: [].} =
when compiles(yamlTag(T)): result = yamlTag(T)
else:
var uri = "!nim:custom:" & (typetraits.name(type(T)))
try: serializationTagLibrary.tags[uri]
except KeyError: serializationTagLibrary.registerUri(uri)
template yamlTag*(T: typedesc[tuple]): expr =
proc yamlTag*(T: typedesc[tuple]):
TagId {.inline, noSideEffect, raises: [].} =
var
i: T
uri = "!nim:tuple("