write `Fork` enum in a "modern way"

This provides the same functionality as `$` proc, but it keeps working
with Nim 1.3+, where `parseEnum` implementation has been changed to be
able to work with enums with holes (after a bugfix for them).

Note that the first character is case-sensitive and "Constantinople" !=
"constantinople".
Since the tests (`test_op_arith` and `test_op_bit`) use lower-case first
letter, the string representation is also changed to the lower-case.
This commit is contained in:
narimiran 2020-09-03 10:03:20 +02:00
parent 285d1ae7d8
commit 36a75197d2
1 changed files with 8 additions and 19 deletions

View File

@ -9,22 +9,11 @@ import stint, eth/common/eth_types
type type
Fork* = enum Fork* = enum
FkFrontier, FkFrontier = "frontier"
FkHomestead, FkHomestead = "homestead"
FkTangerine, FkTangerine = "tangerine whistle"
FkSpurious, FkSpurious = "spurious dragon"
FkByzantium, FkByzantium = "byzantium"
FkConstantinople, FkConstantinople = "constantinople"
FkPetersburg, FkPetersburg = "petersburg"
FkIstanbul FkIstanbul = "istanbul"
proc `$`*(fork: Fork): string =
case fork
of FkFrontier: result = "Frontier"
of FkHomestead: result = "Homestead"
of FkTangerine: result = "Tangerine Whistle"
of FkSpurious: result = "Spurious Dragon"
of FkByzantium: result = "Byzantium"
of FkConstantinople: result = "Constantinople"
of FkPetersburg: result = "Petersburg"
of FkIstanbul: result = "Istanbul"