[Feature Request] Separate format AST for code generation

[ma2bd]

🚀 Feature Request

Motivation

Currently, we use a YAML serialization of the Format definitions provided by serde-reflection.

• (minor) The AST of serde-reflection contain temporary variables that should stay internal to serde-reflection
• Code generation supports an increasing number of features and options (such as comments and external definitions) that would be better included in a richer format AST.
• In general, we need to think about syntax, modularity, namespacing in a future "IDL".

Pitch

• Create a new module format in serde-generate that extends the one in serde-reflection.
• Create a converter from serde-reflection's AST that can incorporate new information such as comments and external definitions (aka imports).
• Design the new enriched AST with a future, possible syntax in mind (parsing and pretty-printing)