Prior to this commit, a 'json!' invocation returned a value of type
'Value' from 'serde_json'. Because 'Value' does not implement
'Responder', most uses of 'json!' were wrapped in 'Json':
'Json(json!(..))`. By returning a crate-local 'JsonValue' type that
implements 'Responder', this repetition is resolved, and a 'json!' can
appear unwrapped.
This commit also removes the reexport of 'Value' from 'rocket_contrib'
as well as the default type of 'Value' for 'T' in 'Json<T>'.
This commit modifies `codegen` so that a route's name (the name of the
route handler) is stored in the generated static route information
structure and later propogated into the corresponding `Route`
structure.
The primary advantage of this change is an improvement to debug and
error messages which now include route names. The collision error
message, in particular, has been improved dramatically in this commit.
Additionally, the `LaunchError::Collision` variant now contains a
vector of the colliding routes.
Rust's linting API is incredibly unstable, resulting in unnecessary
breakage to `rocket_codegen`. Rocket's lints are also not as
conservative as would be desired, resulting in spurious warnings. For
these reasons, this commit removes linting from `rocket_codegen`.
These lints will likely be reintroduced as part of a 'rocket_lints'
crate. Factoring the lints out to a separate crate means that lint
breakage can be dealt with by uncommenting the dependency instead of
waiting for a new release or backtracking nightlies. In the same vein,
it will likely improve stability of the 'rocket_codegen' crate.
The first line in the Tera error messages is sometimes less useful,
but in other cases, like when the context is not a map or struct,
contains the complete description. As such, always include it, even if
the output is slightly uglier. Also don't append periods at the end
since some Tera messages already have them.