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CHANGELOG.md

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Changelog

v0.14.0 - November 3, 2017

Notable changes:

API

  • [753dc4d] Ohm's version number is now exposed as a top-level 'version' property
  • [c5d7046] missingSemanticAction errors include an action call stack
  • [f06ccbb] Range expressions now only work with single-character terminals. E.g., "a".."z" is valid but "foo".."bar" is not.

v0.13.0 - February 24, 2017

Notable changes:

Big stuff

  • Ohm now supports incremental parsing! See the new Matcher class, which can be instantiated for a grammar g via g.matcher().

Language

  • [75d1bc8] Update built-in lower, upper, and unicodeLtmo rules to be consistent with unicode-9.0.0
  • [4f864a0] Add built-in rule caseInsensitive rule for case-insensitive string matching (fixes #162)

API

  • [b63aa84] Remove MatchResult.prototype.getDiscardedSpaces()
  • [7b455d2] Remove children and childOffset from TerminalNodes (fixes #176)

Misc

  • [865c948] Add Typescript type declarations (#187)
  • [798ea77] Show action call stack when a semantic action is missing (fixes #53)
  • [482b693] Add VisitorFamily to extras (#156)

v0.12.0 - August 16, 2016

  • [17d1e32]: Grammar.prototype.semantics renamed to createSemantics.
  • [e98ba04]: Combine ruleBodies, ruleFormals, ruleDescriptions properties of Grammar objects into a single 'rules' property.
  • [555dc22, 6ef0bce, 17ee66f]: The 'interval' property of CST nodes & semantic wrappers is now called 'source'.
  • [7b34725]: Add 'sourceString' property to Wrappers, as an alias for source.contents (formerly interval.contents)
  • [7797eba]: Grammar recipe format is now pure JSON, rather than JavaScript source.

v0.11.0 - May 16, 2016

Notable changes:

Language

  • [5d972f6]: Inline rule declarations are now only allowed in top-level alternation nodes.
    • Previously, the grammar allowed inline rule declarations in any alternation, but it only really makes sense at the top level.
  • [fdf4381]: Matching on structured data (Objects, Arrays, etc.) is no longer supported.
    • This was a feature that Ohm inherited from OMeta, but we found that we almost never used it in Ohm. Removing it allows significant simplification to the language, code, and documentation.

API

  • [e497d47]: Like grammars, Semantics instances now have a toRecipe method

v0.10.0 - May 2, 2016

Notable changes:

Language

  • [3ce66ea]: Allow leading pipe in rule bodies (suggested by Jason Merrill).
    • In rule definitions, the body may optionally begin with a | character, which will be ignored.
  • [761d6ef]: ListOf_some and ListOf_none renamed to NonemptyListOf and EmptyListOf.
  • [c548f01]: The built-in spaces_ rule has been renamed to spaces.

API

  • [22ff905]: No more default semantic action for _terminal.
    • To duplicate the old behavior, you can write a "_terminal" semantic action that just returns this.primitiveValue, as in the math example.
  • [8efa687]: Expose pexprs as part of the public API (ohm.pexprs).
  • #63: Semantics instances now include a built-in attribute named 'asIteration'.
    • This simplifies working with the built-in ListOf rule.
    • Needs documentation (#93)
  • [7590d82]: Add "extras" module, with toAST() operation.
  • [e24a146]: New isOptional method on parse nodes.
  • [64ee822]: New getDiscardedSpaces method on MatchResult, which makes Alex happy.
    • Needs documentation (#92)