v1.9.0

Added

• Lots of work on the Ripper translation layer to make it more compatible and efficient.
• Alias Prism::Node#breadth_first_search to Prism::Node#find.
• Add Prism::Node#breadth_first_search_all/Prism::Node#find_all for finding all nodes matching a condition.

Changed

• Fixed location of opening tokens when invalid syntax is parsed.
• Fix RBI for parsing options.

v1.8.0

Added

• Optimize ruby visitor.
• Report unterminated construct errors at opening token.

Changed

• Correctly expose ripper state.
• Use one file for versioned parser classes.
• Fix denominator of rational float literal.
• Decouple ripper translator from ripper library.
• Sync Prism::Translation::ParserCurrent with Ruby 4.0.

v1.7.0

Added

• Support 4.1 as a version option.
• Add equal_loc to CallNode.
• Add len()/is_empty() to ConstantList and NodeList in the Rust API.

Changed

• Rename version 3.5 to version 4.0.
• Fix compiling the gem from source on Windows.
• Fix parsing of unary method calls like 42.~@.
• Reject def f a, (b) = 1.
• Reject endless method as a block parameter default.
• Reject variable capture in alternative pattern.
• Many fixes in regards to memory safety, found through fuzzing.
• Many fixes to better handle invalid syntax, also found through fuzzing.
• Fix the ruby version used by the ripper translator.
• Fix ruby_parser translation comment processing.

v1.6.0

Added

• Add support for passing "current" as the version option to Prism.* APIs.

Changed

• Remove a compiler warning for a missing unsigned cast for a shift value.

v1.5.2

Changed

• Fix character literal forced encoding when a unicode escape sequence is used.
• Reject 1 if foo = bar baz.
• Clear static literal flag on interpolated strings.
• Reject optional argument/endless method definition ambiguity.

v1.5.1

Changed

• Revert of a bug introduced with static literal flags on interpolated strings.

v1.5.0

Added

• Add Prism::Translation::ParserCurrent.
• Add Integer::to_u32_digits for the Rust API.
• Add pm_comment_type_t field for the Rust API.
• Support leading logical operators for CRuby 3.5+.

Changed

• Mark Prism as ractor-safe.
• Enforce a minimum version for the parser translation layer.
• Many fixes to the parser translation layer.
• Accept a newline after the defined? keyword.
• Reject true && not true.
• Make it = it assign nil to match parse.y behavior [Bug #21139].
• Some fixes to the ruby parser translation layer.
• Ensure call nodes have the correct ending location.
• Reject foo && return bar.

v1.4.0

Added

• Support 3.5 as a version option.
• Many, many compatibility fixes for the parser translation layer.
• Handle escapes in named capture names.
• The freeze option is added to the various Prism:: APIs to deeply freeze the AST.
• Properly support it for the parser and ruby_parser translation layers.
• Track the then keyword on rescue nodes.
• Add a multiple_statements? flag to parentheses nodes to support desired defined? behavior.

Changed

• The strings used in the AST are now frozen.
• Fixed handling escaped characters after control sequences in character literals.
• Fix reading off the end of an unterminated global variable.
• Raise a syntax error for defining []= with endless method syntax.
• Increase value of PRISM_DEPTH_MAXIMUM to 10000.
• Freeze Prism::VERSION.
• Fix up rescue modifier precedence.

v1.3.0

Added

• Introduce Prism::StringQuery.
• Introduce Prism::Relocation.
• Track do keyword for WhileNode and UntilNode.
• Change the way the gem is built to rely on mkmf instead of make.
• Lots more documentation on node fields.

Changed

• Properly add an error for def @foo; end.
• Properly add an error for foo(**, *).
• Fix up regression in string parsing in RubyParser translation.
• Reject invalid dot method call after match expression.
• Reject invalid operator after match expression.
• Fix up %-literals delimited by newlines.
• Properly add an error for -> { _1; -> { _1 } }.
• Reject blocks and keywords in index writes.

v1.2.0

Added

• Introduce Prism::CodeUnitsCache.

Changed

• Properly handle lexing global variables that begin with $-.
• Properly reject invalid multi writes within parentheses.
• Fix unary * binding power.
• Set contains_keywords flag for implicit gets calls when -p is used.
• Properly reject invalid non-associative operator patterns.
• Do not warn about unused variables declared on negative lines.