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Changelog

2.5.0

  • Upgraded baseline to Java 21 LTS (<maven.compiler.release>21</maven.compiler.release>) and modernized GitHub Actions CI.
  • Added fluent .then(...) sequence chaining with strongly-typed SequenceParser2 through SequenceParser9.
  • Added multi-arity .map(...) callbacks (BiFunction, Function3 through Function9) for type-safe sequence unpacking.
  • Introduced dual-nature tuples (Tuple2 through Tuple9) extending AbstractList<Object> with typed accessors and standard list compatibility.
  • Added type-safe grammar productions with Production<T> keys and GrammarParser typed lookup.
  • Modernized ExpressionBuilder<T> with full generic typing, builder-level primitive helpers, loopback access, optional operator groups, foldLeft/foldRight, and typed action callbacks.
  • Added zero-list repeating character parsers (starString(), plusString(), timesString(), repeatString()) with SIMD string matching.
  • Added full Unicode code point and surrogate pair parsing with UnicodeCharacterParser.
  • Added CharacterPredicate AST hierarchy with range merging and automatic lookup table optimization.
  • Added indentation-sensitive parsing engine (Indent) for indentation-aware grammars (Indent.during, equal, greater, etc.).
  • Added grammar Analyzer for computing reachability, cycles, nullability, FIRST sets, and FOLLOW sets.
  • Added grammar Linter with 13 automated rules detecting anti-patterns.
  • Added grammar Optimizer rule engine with choice flattening, character repeater rewriting, and delegate removal.
  • Added Progress visual execution debugger and ProgressFrame for inspecting parser backtracking and execution graphs.
  • Added lazy stream matching (matchesAsStream()) and offset-based searching on Parser.
  • Added zero-allocation fast parse (fastParseOn) across all parsers.
  • Added skip(...) and delimiter combinators, where(...) filtering combinator, label(...) parser, and position() / newline() primitives.
  • Comprehensive documentation rewrite and examples modernization in README.md and ExamplesTest.java.
  • Near 100% test coverage across all reactor modules.

2.4.0

  • Added Java Platform Module System (JPMS) support with module-info.java.
  • Added configurable failure join strategy on ChoiceParser (FailureJoiner).
  • Improved character parser failure messages and XML grammar performance.
  • Migrated continuous integration pipelines to GitHub Actions.

2.3.0

  • Introduced zero-allocation fast parse mode (fastParseOn).
  • Added parenthesis expression support to ExpressionBuilder.
  • Optimized XML and JSON grammars to take advantage of fast parsing.
  • Improved Java 11 (LTS) compatibility.

2.2.0

  • Preserved parser generic types during copy().
  • Cleaned up build configuration for Maven Central publication.
  • Code cleanups, static analysis fixes, and dependency upgrades.

2.1.0

  • Introduced GrammarDefinition and GrammarParser following the Dart architecture.
  • Migrated XML and Smalltalk example grammars to grammar definitions.
  • Modernized internal collections, replacing legacy synchronized classes.

2.0.0

  • Major rewrite modernizing PetitParser for Java 8+ with lambda expressions.
  • Package structure reorganization into context, actions, combinators, primitive, and repeating.
  • Rebuilt character predicate hierarchy with optimized range checks and bitmask lookups.
  • Added expression builder and composite grammar tools.