v0.18.0

Added

• The ParametersNode#signature method is added, which returns the same thing as Method#parameters.
• Visitor functionality has been added to the JavaScript API.
• The Node#to_dot API has been added to convert syntax trees to Graphviz digraphs.
• IfNode and UnlessNode now have a then_keyword_loc field.
• Many more encodings are now supported.
• Some new Location APIs have been added for dealing with characters instead of bytes, which are: start_character_offset, end_character_offset, start_character_column, and end_character_column.
• A warning has been added for when END {} is used within a method.
• ConstantPathNode#full_name{,_parts} will now raise an error if the receiver of the constant path is not itself a constant.
• The in keyword and the => operator now respect non-associativity.
• The .. and ... operators now properly respect non-associativity.

Changed

• Previously ... in blocks was accepted, but it is now properly rejected.
• BREAKING: librubyparser.* has been renamed to libprism.* in the C API.
• We now properly reject floats with exponent and rational suffixes.
• We now properly reject void value expressions.
• BREAKING: The --disable-static option has been removed from the C extension.
• The rescue modifier keyword is now properly parsed in terms of precedence.
• We now properly reject defining a numbered parameter method.
• BREAKING: MatchWriteNode now has a list of targets, which are local variable target nodes. This is instead of locals which was a constant list. This is to support writing to local variables outside the current scope. It has the added benefit of providing location information for the local variable targets.
• BREAKING: CaseNode has been split into CaseNode and CaseMatchNode, the latter is used for case ... in expressions.
• BREAKING: StringConcatNode has been removed in favor of using InterpolatedStringNode as a list.