PetitParser Examples

Parses Dart 3+ source code into strongly-typed ASTs, supporting records, patterns, switch expressions, and enhanced enums.

Parses classic Pascal source code implementing the Apple Pascal standard into structured Abstract Syntax Trees.

Indentation-aware grammar visualizer for modern Python 3.12+ source code supporting match statements, type aliases, and async constructs.

Complete Smalltalk-80 grammar and AST visualizer, ported from the original Smalltalk Helvetia implementation.

Scheme-like evaluator supporting lexical scoping, lambda closures, macros, recursion, and native environment inspection.

Logic programming inference engine featuring knowledge base rule parsing, SLD-resolution search, and unification.

Parses regular expressions, compiles them to Non-deterministic Finite Automata (NFA), and matches against text with interactive visualization.

Parses mathematical expressions with operator precedence, function calls, variables, and renders evaluation trees.

Parses dynamic multi-variable mathematical formulas with PetitParser's ExpressionBuilder, evaluating ASTs in real time to render animated 2D curves and 3D surfaces in WebGL.

Downloads and parses real-world BibTeX databases directly in your browser with filtering, full-text search, and citation export.

Compares the performance and parsed output of PetitParser's pure-Dart JSON grammar against the platform native JSON parser.

Parses CommonMark and GFM Markdown into typed ASTs with live in-browser syntax highlighting and HTML rendering.

Parses comma-separated (CSV) or tab-separated (TSV) tabular data with robust quote and escape handling into structured records.

Parses and decomposes Uniform Resource Identifiers (URIs) into their constituent parts according to RFC 3986 specifications.

Stream parses XML events (SAX), creates interactive DOM trees with pretty-printing, and evaluates real-time XPath queries.