51 lines
1.9 KiB
Nim
51 lines
1.9 KiB
Nim
import std/macros
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import std/typetraits
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import pkg/contractabi
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import ./basics
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import ./provider
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type
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Event* = object of RootObj
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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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SmallByteArray = array[ 1, byte] | array[ 2, byte] | array[ 3, byte] |
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array[ 4, byte] | array[ 5, byte] | array[ 6, byte] |
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array[ 7, byte] | array[ 8, byte] | array[ 9, byte] |
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array[10, byte] | array[11, byte] | array[12, byte] |
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array[13, byte] | array[14, byte] | array[15, byte] |
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array[16, byte] | array[17, byte] | array[18, byte] |
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array[19, byte] | array[20, byte] | array[21, byte] |
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array[22, byte] | array[23, byte] | array[24, byte] |
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array[25, byte] | array[26, byte] | array[27, byte] |
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array[28, byte] | array[29, byte] | array[30, byte] |
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array[31, byte] | array[32, byte]
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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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decoder.startTuple()
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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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decoder.finishTuple()
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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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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 or
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typeof(field) is SmallByteArray or
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typeof(field).distinctBase is ValueType or
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typeof(field).distinctBase is SmallByteArray:
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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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