Commit graph

51 commits

Author SHA1 Message Date
Nick Alexander
dcd9bcb1ce Extract partial storage abstraction; use error-chain throughout. Fixes #328. r=rnewman (#341)
* Pre: Drop unneeded tx0 from search results.

* Pre: Don't require a schema in some of the DB code.

The idea is to separate the transaction applying code, which is
schema-aware, from the concrete storage code, which is just concerned
with getting bits onto disk.

* Pre: Only reference Schema, not DB, in debug module.

This is part of a larger separation of the volatile PartitionMap,
which is modified every transaction, from the stable Schema, which is
infrequently modified.

* Pre: Fix indentation.

* Extract part of DB to new SchemaTypeChecking trait.

* Extract part of DB to new PartitionMapping trait.

* Pre: Don't expect :db.part/tx partition to advance when tx fails.

This fails right now, because we allocate tx IDs even when we shouldn't.

* Sketch a db interface without DB.

* Add ValueParseError; use error-chain in tx-parser.

This can be simplified when
https://github.com/Marwes/combine/issues/86 makes it to a published
release, but this unblocks us for now.  This converts the `combine`
error type `ParseError<&'a [edn::Value]>` to a type with owned
`Vec<edn::Value>` collections, re-using `edn::Value::Vector` for
making them `Display`.

* Pre: Accept Borrow<Schema> instead of just &Schema in debug module.

This makes it easy to use Rc<Schema> or Arc<Schema> without inserting
&* sigils throughout the code.

* Use error-chain in query-parser.

There are a few things to point out here:

- the fine grained error types have been flattened into one crate-wide
  error type; it's pretty easy to regain the granularity as needed.

- edn::ParseError is automatically lifted to
  mentat_query_parser::errors::Error;

- we use mentat_parser_utils::ValueParser to maintain parsing error
  information from `combine`.

* Patch up top-level.

* Review comment: Only `borrow()` once.
2017-02-24 15:33:48 -08:00
Victor Porof
7fc2a22d68 Implement a basic edn matcher, r=ncalexan (#271) (#338)
Signed-off-by: Victor Porof <victor.porof@gmail.com>
2017-02-23 09:11:34 +01:00
Victor Porof
bf707acbc3 Lint for the clippy gods in the edn crate (#340)
Signed-off-by: Victor Porof <victor.porof@gmail.com>
2017-02-22 18:11:05 +01:00
Victor Porof
0d3b8e4b29 Avoid code duplication for common Value trait implementations, r=ncalexan
Signed-off-by: Victor Porof <victor.porof@gmail.com>
2017-02-22 08:36:45 +01:00
Victor Porof
1b26e23d02 Implement edn pretty printing using pretty.rs. Fixes #195. (#245)
* 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()`.
2017-02-21 11:48:08 -08:00
Richard Newman
a10f68fdb7 Mark every project as being part of the workspace. r=nalexander
This allows `cargo test --all` to work.
2017-02-20 11:04:08 -08:00
Jordan Santell
a59f9583ac Store Idents as NamespacedKeywords, rather than Strings. Fixes #291. (#300)
r=ncalexander
2017-02-17 13:55:36 -08:00
Victor Porof
896d7f8f88 Add a span component to edn::Value, r=ncalexan
Signed-off-by: Victor Porof <victor.porof@gmail.com>
2017-02-17 18:31:26 +01:00
Joe Walker
89949fb451 Update README for edn; r=me 2017-02-16 18:32:36 +00:00
Jordan Santell
4f5c94891a Add octal, hexadecimal, and arbitrary base integers to the EDN parser. Fixes #277. r=rnewman (#286) 2017-02-10 16:03:35 -08:00
Victor Porof
49f91b05b0 Expose EDN into_ methods that consume the edn value, r=jwalker. Fixes 256
Signed-off-by: Victor Porof <victor.porof@gmail.com>
2017-02-10 14:58:38 +01:00
Richard Newman
4366f6d61f Expose EDN as_ methods that return copied values, not references. 2017-02-09 10:21:35 -08:00
Victor Porof
42580539b8 Properly handle whitespace for Infinity and NaN, r=rnewman (#246)
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-09 18:13:44 +01:00
Victor Porof
c585715224 Don't depend on num and ordered-float in the db and query crates, r=ncalexan (#223)
Signed-off-by: Victor Porof <victor.porof@gmail.com>
2017-02-08 12:19:16 +01:00
Victor Porof
4d83aafa2a Ensure printing/parsing edn strings is isomorphic
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-04 08:47:48 +01:00
Victor Porof
a627f532f0 Relax whitespace rules for edn vectors, lists, sets and maps
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-04 08:45:31 +01:00
Victor Porof
419db388da Relax whitespace rules for Infinity and NaN
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-04 08:45:02 +01:00
Jordan Santell
0b20d7691b Parse and display EDN values for NaN, +Infinity and -Infinity. Fixes #232 (#238) r=victorporof 2017-02-03 10:14:23 -08:00
Victor Porof
c038c11017 Consolidate edn peg rules to better parse keywords and symbols, r=ncalexan. Fixes #219 2017-02-03 09:08:24 +01:00
Victor Porof
9ee0ac8e00 Unify and generalize keywords and symbols parsing
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-03 09:06:42 +01:00
Victor Porof
72da5722ae Update rustpeg to latest version and follow new syntax and formatting rules
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-03 09:06:42 +01:00
Victor Porof
611fbe2eef Properly print null edn values as "nil", to allow for isomorphic write/parse
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-03 09:06:42 +01:00
Richard Newman
5b770a54cd Parse basic :find and :where clauses. (#211) r=nalexander
* Make Variable::from_symbol public.
* Implement basic parsing of queries.
* Use pinned dependencies the hard way to fix Travis.
* Bump ordered-float dependency to 0.4.0.
* Error coercions to use ?, and finishing the find interface.
2017-02-02 18:32:00 -08:00
Victor Porof
707ce36236 Don't use single-character string constants in the is_backward function
See https://github.com/Manishearth/rust-clippy/wiki#single_char_pattern for further info

Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 19:55:29 +01:00
Victor Porof
9a5ece8c89 Handle more edn::Value types for printing, precursor for #195
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 17:22:58 +01:00
Victor Porof
2ecda0a2bd Avoid needless reborrows and simplify Ord implementation for edn::Value 2017-02-02 17:22:58 +01:00
Victor Porof
a685d6c541 Move edn test functions into a submodule
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 17:22:58 +01:00
Victor Porof
cc56cec11a Add note about linked lists data type choice for edn::Value 2017-02-02 17:22:58 +01:00
Victor Porof
00048d1955 Remove edn::Pair struct since it's not used anywhere
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 17:22:58 +01:00
Victor Porof
4e9e8ed837 Use idiomatic enumerate method on interators instead of iterating over indices
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 10:59:03 +01:00
Victor Porof
4b2c7870c0 Wrap code indicated by the "_" in documentation as suggested by rustdoc best practices
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 10:59:03 +01:00
Victor Porof
17bc85fe27 Remove return statements from edn parser tests
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 10:59:03 +01:00
Victor Porof
25474980b1 Add rustdoc comments for to_symbol and to_keyword functions
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 10:59:03 +01:00
Victor Porof
8f68f68378 Use idiomatic map_or_else calls to Option<T> instead of double returns
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 10:59:03 +01:00
Victor Porof
85da91a0ab Add helper functions constructing OrderedFloat and BigInt to edn crate, r=ncalexan,rnewman. Fixes #198
Signed-off-by: Victor Porof <vporof@mozilla.com>
2017-02-02 10:58:08 +01:00
Richard Newman
a9929249eb Use Into<Option<>> trick for to_keyword and to_symbol. 2017-02-01 17:46:53 -08:00
Richard Newman
0b3387f8b9 Minor EDN cleanup. (#217) r=jsantell
* to_reverse -> to_reversed.
* Add PlainSymbol::plain_name for examining $x and ?y.
* Fix comment.
2017-02-01 14:34:51 -08:00
Richard Newman
932a42866c Fix comments in EDN crate. 2017-01-30 17:45:02 -08:00
Jordan Santell
0a21b5dca4 Add NamespacedKeyword::{is_forward, is_backward, to_reverse} for
inspection in NamespacedKewyord for usage by query and transaction parsers. Fixes #202
2017-01-30 14:39:53 -08:00
Jordan Santell
359d356dd9 Merge pull request #213 from mozilla/199
Add Into<String> to symbol::* constructors. Fixes #199
2017-01-30 13:35:12 -08:00
Jordan Santell
d116fd7bff Add is_$type and as_$type methods to edn::Value types and add tests. Fixes #197 2017-01-30 09:35:33 -08:00
Jordan Santell
18279fdd3c Add Into<String> to symbol::* constructors. Fixes #199 2017-01-28 22:53:40 -08:00
Richard Newman
c6fa14c0c8 Rudimentary printing of EDN values. (#209) r=jsantell
* Add a little From helper for edn::parse::ParseError. Not used yet.

* Ignore more things.

* Partly implement Display for edn::Value.
2017-01-28 14:18:17 -08:00
Nick Alexander
81af295948 Start installing SQL schema. (#171) r=rnewman
* Start installing the SQLite store and bootstrapping the datom store.

* Review comment: Decomplect V2_IDENTS.

* Review comment: Decomplect V2_PARTS.

* Review comment: Pre: Expose Clojure's merge on Value instances.

* Review comment: Decomplect V2_SYMBOLIC_SCHEMA.

* Review comment: Decomplect V1_STATEMENTS.

* Review comment: Prefer ? to try!.

* Review comment: Fix typos; format; add TODOs.

* Review comment: Assert that Mentat `Schema` is valid upon creation.

* Review comment: Improve conversion to and from SQL values.

This patch factors the fundamental SQL conversion maps
between (rusqlite::Value, value_type_tag) and (edn::Value, ValueType)
through a new Mentat TypedValue.  (A future patch might rename this
fundamental type mentat::Value.)

To make certain conversion functions infallible, I removed
placeholders for :db.type/{instant,uuid,uri}.  (We could panic
instead, but there's no need to do that right now.)

* Review comment: Always uses bundled SQLite in rusqlite.

This avoids (runtime) failures in Travis CI due to old SQLite
versions.  See 432966ac77.

* Review comment: Move semantics in `from_sql_value_pair`.

* Review comment: DB_EXCISE_BEFORE_T instead of ...BEFORET (no underscore).

* Review comment: Move overview notes to the Wiki.
2017-01-25 16:13:56 -08:00
Richard Newman
2592506288 Implement parsing of simple :find expressions. (#196) r=nalexander
* 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.
2017-01-25 14:06:19 -08:00
Nick Alexander
ab041291fb edn: Bound values by optional whitespace; treat comma as whitespace. 2017-01-18 08:34:27 -08:00
Nick Alexander
247035cc9b edn: Allow comments.
EDN supports only one type of comment: initiated by ; and lasting
until the end of the current line or the end of the input stream.
2017-01-18 08:34:27 -08:00
Nick Alexander
b11b9b909c Add tx{-parser} crates; start parsing transactions. (#164) r=rnewman
This depends on edn and uses the combine parser combinator library.
2017-01-12 16:08:29 -08:00
Richard Newman
a152e60040 Read EDN keywords and symbols as rich types. Fixes #154. r=nalexander 2017-01-12 09:09:48 -08:00
Joe Walker
c4735119c4 Implement a basic EDN parser. (#149) r=rnewman,bgrins,nalexander
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.
2017-01-11 13:03:04 -08:00