* Implement pretty printing
Signed-off-by: Victor Porof <victor.porof@gmail.com>
* Rewrite pretty printing.
This does a few things. First, it use pretty.rs directly, without the
layer of macro obfuscation. The code is significantly simpler as a
result.
Second, it tightens the layout, using pretty.rs to group nested
layouts that fit on a single line. This is Clojure's EDN style, more
or less.
Third, it drops "special format" support for queries. This wasn't
completely implemented; if we want it, we can newtype
Query(edn::Value) and figure out how to really implement this idea.
* Rename to reflect functionality.
* Make write interface more Rust-like.
There isn't a clear standard in the stdlib, but a function that takes
ownership of a writer and then returns it back is definitely not
Rust-like. That's what a (mutable) reference is for.
* Review comment: Use as_ref to avoid cloning strings.
* Post: Fix tests to use `without_spans()`.
* Test the mentat_query directory on Travis.
* Export common types from edn.
This allows you to write
use edn::{PlainSymbol,Keyword};
instead of
use edn:🔣:{PlainSymbol,Keyword};
* Add an edn::Value::is_keyword predicate.
* Clean up query, preparing for query-parser.
* Make EDN keywords and symbols take Into<String> arguments.
* Implement parsing of simple :find lists.
* Rustfmt query-parser. Split find and query.
* Review comment: values_to_variables now returns a NotAVariableError on failure.
* Review comment: rename gimme to to_parsed_value.
* Review comment: add comments.
The parser mostly works and has a decent test suite. It parses all the
queries issued by the Tofino UAS, with some caveats. Known flaws:
* No support for tagged elements, comments, discarded elements or "'".
* Incomplete support for escaped characters in strings and the range of
characters that are allowed in keywords and symbols.
* Possible whitespace handling problems.
