44 lines
1.0 KiB
Nim
44 lines
1.0 KiB
Nim
import pkg/stint
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{.push raises:[].}
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type
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BlockTagKind = enum
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stringBlockTag
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numberBlockTag
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BlockTag* = object
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case kind: BlockTagKind
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of stringBlockTag:
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stringValue: string
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of numberBlockTag:
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numberValue: UInt256
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func init(_: type BlockTag, value: string): BlockTag =
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BlockTag(kind: stringBlockTag, stringValue: value)
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func init*(_: type BlockTag, value: UInt256): BlockTag =
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BlockTag(kind: numberBlockTag, numberValue: value)
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func earliest*(_: type BlockTag): BlockTag =
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BlockTag.init("earliest")
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func latest*(_: type BlockTag): BlockTag =
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BlockTag.init("latest")
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func pending*(_: type BlockTag): BlockTag =
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BlockTag.init("pending")
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func `$`*(blockTag: BlockTag): string =
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case blockTag.kind
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of stringBlockTag:
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blockTag.stringValue
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of numberBlockTag:
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"0x" & blockTag.numberValue.toHex
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func `==`*(a, b: BlockTag): bool =
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case a.kind
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of stringBlockTag:
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a.stringValue == b.stringValue
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of numberBlockTag:
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a.numberValue == b.numberValue
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