## Description
Closes: #12709
Part of Sign Mode Textual (ADR 050) implementation.
Renders Timestamp messages as RFC 3339 (simplified ISO 8601).
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## Description
ref: https://github.com/cosmos/cosmos-sdk/pull/12910#discussion_r943984849
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Noticed in an audit that the differeent value renderers perform an
expensive and unnecessary string->byteslice in cases where the output
write implements io.StringWriter. This change instead invokes
io.WriteString(w, formatted)
instead of:
w.Write([]byte(formatted))
and added benchmarks that show an improvement from just the 1 line change:
```shell
$ benchstat before.txt after.txt
name old time/op new time/op delta
IntValueRendererFormat-8 4.13µs ± 3% 3.95µs ± 6% -4.55% (p=0.000 n=15+14)
BytesValueRendererFormat-8 5.22ms ± 3% 4.77ms ± 5% -8.60% (p=0.000 n=15+14)
name old alloc/op new alloc/op delta
IntValueRendererFormat-8 3.64kB ± 0% 3.31kB ± 0% -9.01% (p=0.000 n=15+15)
BytesValueRendererFormat-8 12.6MB ± 0% 8.4MB ± 0% -33.22% (p=0.000 n=15+15)
name old allocs/op new allocs/op delta
IntValueRendererFormat-8 76.0 ± 0% 67.0 ± 0% -11.84% (p=0.000 n=15+15)
BytesValueRendererFormat-8 27.0 ± 0% 18.0 ± 0% -33.33% (p=0.000 n=15+15)
```
While here, implemented negative sign preservation because previously
the code wasn't tested for negative values so passing in negative values
such as:
"-10000000.11"
would produce:
"10'000'000.11"
instead of the proper value with the negative sign preserved:
"-10'000'000.11"
Fixes#12810Fixes#12812
## Description
Closes: #12711
Implements bytes value renderer for SIGN_MODE_TEXTUAL
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## Description
closes#12613
This PR sets up the infrastructure for value renderers as discussed in ADR-050. It's only additive, in a new package, and isn't wired up to the rest of the codebase.
It adds a new root go module `tx`, which has one `textual` subpackage for now.
Only adds implementation for:
- integers
- decimals
Sister PR:
- [ ] https://github.com/cosmos/cosmjs/pull/1147
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