44 lines
2.0 KiB
Nim
44 lines
2.0 KiB
Nim
import
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std/typetraits
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type
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DefaultFlavor* = object
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template serializationFormatImpl(Name: untyped,
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mimeTypeName: static string = "") {.dirty.} =
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# This indirection is required in order to be able to generate the
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# `mimeType` accessor template. Without the indirection, the template
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# mechanism of Nim will try to expand the `mimeType` param in the position
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# of the `mimeType` template name which will result in error.
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type Name* = object
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template mimeType*(T: type Name): string = mimeTypeName
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template serializationFormat*(Name: untyped, mimeType: static string = "") =
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serializationFormatImpl(Name, mimeType)
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template setReader*(Format, FormatReader: distinct type) =
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when arity(FormatReader) > 1:
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template ReaderType*(T: type Format, F: distinct type = DefaultFlavor): type = FormatReader[F]
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template Reader*(T: type Format, F: distinct type = DefaultFlavor): type = FormatReader[F]
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else:
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template ReaderType*(T: type Format): type = FormatReader
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template Reader*(T: type Format): type = FormatReader
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template setWriter*(Format, FormatWriter, PreferredOutput: distinct type) =
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when arity(FormatWriter) > 1:
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template WriterType*(T: type Format, F: distinct type = DefaultFlavor): type = FormatWriter[F]
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template Writer*(T: type Format, F: distinct type = DefaultFlavor): type = FormatWriter[F]
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else:
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template WriterType*(T: type Format): type = FormatWriter
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template Writer*(T: type Format): type = FormatWriter
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template PreferredOutputType*(T: type Format): type = PreferredOutput
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template createFlavor*(ModifiedFormat, FlavorName: untyped) =
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type FlavorName* = object
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template Reader*(T: type FlavorName): type = Reader(ModifiedFormat, FlavorName)
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template Writer*(T: type FlavorName): type = Writer(ModifiedFormat, FlavorName)
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template PreferredOutputType*(T: type FlavorName): type = PreferredOutputType(ModifiedFormat)
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template mimeType*(T: type FlavorName): string = mimeType(ModifiedFormat)
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