35 lines
975 B
Nim
35 lines
975 B
Nim
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import std/macros
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import pkg/contractabi
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import ./basics
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type
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Event* = object of RootObj
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Topic* = array[32, byte]
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ValueType = uint8 | uint16 | uint32 | uint64 | UInt256 | UInt128 |
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int8 | int16 | int32 | int64 | Int256 | Int128 |
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bool | Address
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push: {.upraises: [].}
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template indexed* {.pragma.}
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func decode[E: Event](decoder: var AbiDecoder, _: type E): ?!E =
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var event: E
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for field in event.fields:
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if not field.hasCustomPragma(indexed):
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field = ?decoder.read(typeof(field))
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success event
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func decode*[E: Event](_: type E, data: seq[byte], topics: seq[Topic]): ?!E =
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bind decode
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var event = ?Abidecoder.decode(data, E)
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var i = 1
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for field in event.fields:
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if field.hasCustomPragma(indexed):
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if i >= topics.len:
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return failure "indexed event parameter not found"
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if typeof(field) is ValueType:
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field = ?AbiDecoder.decode(@(topics[i]), typeof(field))
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inc i
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success event
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