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type
fixed32* = distinct uint32
fixed64* = distinct uint64
sfixed32* = distinct int32
sfixed64* = distinct int64
sint32* = distinct int32
sint64* = distinct int64
bytes* = distinct string
# int32 # varint, no zigzag
# int64 # varint, no zigzag
# uint32 # varint, no zigzag
# uint64 # varint, no zigzag
# fixed32 # 32-bit uint
# fixed64 # 64-bit uint
# sfixed32 # 32-bit int
# sfixed64 # 64-bit int
# sint32 # varint, zigzag
# sint64 # varint, zigzag
# float32 # fixed32
# float64 # fixed64
WireType* {.pure.} = enum
Varint = 0
Fixed64 = 1
LengthDelimited = 2
StartGroup = 3
EndGroup = 4
Fixed32 = 5
FieldType* {.pure.} = enum
Double = 1
Float
Int64
UInt64
Int32
Fixed64
Fixed32
Bool
String
Group
Message
Bytes
UInt32
Enum
SFixed32
SFixed64
SInt32
SInt64
proc wiretype*(ft: FieldType): WireType =
case ft
of FieldType.Double: result = WireType.Fixed64
of FieldType.Float: result = WireType.Fixed32
of FieldType.Int64: result = WireType.Varint
of FieldType.UInt64: result = WireType.Varint
of FieldType.Int32: result = WireType.Varint
of FieldType.Fixed64: result = WireType.Fixed64
of FieldType.Fixed32: result = WireType.Fixed32
of FieldType.Bool: result = WireType.Varint
of FieldType.String: result = WireType.LengthDelimited
of FieldType.Group: result = WireType.LengthDelimited # ???
of FieldType.Message: result = WireType.LengthDelimited
of FieldType.Bytes: result = WireType.LengthDelimited
of FieldType.UInt32: result = WireType.Varint
of FieldType.Enum: result = WireType.Varint
of FieldType.SFixed32: result = WireType.Fixed32
of FieldType.SFixed64: result = WireType.Fixed64
of FieldType.SInt32: result = WireType.Varint
of FieldType.SInt64: result = WireType.Varint
proc isNumeric*(wiretype: WireType): bool =
case wiretype
of WireType.Varint: result = true
of WireType.Fixed64: result = true
of WireType.Fixed32: result = true
else: result = false
proc isNumeric*(ft: FieldType): bool =
result = isNumeric(wiretype(ft))
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