JsonPrinter and SBEIR Schema codegen issues

[aksharp]

Ran into few issues while evaluating SBE 1.8.1

1. Issues with JsonPrinter (would like to use it for logging/toolchain as it is faster than alternatives)

• Prints invalid JSON
• Drops enum and bool fields
• Rounds up numbers

2. IR Schema file

• Enum values are missing when using sbeir schema with SBE Tool to codegen

POC code is available on github here: https://github.com/aksharp/sbe-poc

Failing test
https://github.com/aksharp/sbe-poc/blob/master/src/test/scala/sbe/JsonComparison.scala

[mjpt777]

Thanks @aksharp for the report. There was indeed an issue with encoded IR which I've now fixed.

The JsonPrinter was introduced for debugging purposes and is incomplete. If I get time I'll look at fleshing out the remainder of the functionality.

[mjpt777]

@billsegall Could you have a look at modifying the Rust codec so this test passes again and see if the C# needs any attention?

https://github.com/real-logic/simple-binary-encoding/blob/master/sbe-tool/src/test/java/uk/co/real_logic/sbe/generation/rust/RustGeneratorTest.java#L239

[mjpt777]

I've now fleshed out the features to support all types.

[mjpt777]

@ZackPierce Can you have a look at the Rust changes? I should be fairly simple.

[ZackPierce]

Sure, I'll look into it this week.

[ZackPierce]

Yep, I think I've got it sorted out. Will toss up a PR shortly.