javaparser/javaparser
Javaparser
JavaParser is a library that parses Java source code up to version 12 into an Abstract Syntax Tree (AST), enabling programmatic analysis, transformation, and generation of Java code. It serves as a parser, code analyzer, code generator, comment parser, and symbol resolver, providing a unified toolkit for working with Java source at the AST level.
The library distinguishes itself through several integrated capabilities that go beyond basic parsing. It includes a symbol resolution engine that resolves type and symbol references across files for accurate semantic analysis, and an error-recovery parser that continues producing a partial AST even after encountering syntax errors. A lexical preservation layer retains original whitespace, comments, and formatting when modifying the AST and regenerating source code, while comment-aware AST association attaches extracted comments to corresponding nodes for documentation or analysis. The visitor-pattern tree traversal enables inspection or transformation of nodes without manual recursion, and the cross-file analysis pipeline processes all source files in a project at once for bulk operations and inter-file pattern detection.
The library supports analyzing Java source code to find patterns of interest, inspecting specific AST nodes, traversing and manipulating ASTs, transforming code by identifying and modifying patterns, and generating Java source code by building an AST from scratch. It also handles parsing Java comments and recovering from parse errors, with the ability to preserve lexical formatting throughout transformations.
Features
- Java Source Code Analyzers - Traverses parsed Java source code to find patterns of interest, such as specific field declarations or class structures.
- Java Parsers - Parses Java source code up to version 12 into an Abstract Syntax Tree for analysis and manipulation.
- Symbol Resolution - Resolves type and symbol references in Java source using a built-in solver for accurate semantic analysis.
- Java Symbol Resolvers - Resolves type and symbol references in Java source code using a symbol solver for accurate semantic analysis across files.
- AST-to-Source Generators - Builds Java source by constructing an AST in memory and rendering it to text.
- Java Symbol Resolvers - Resolves type and symbol references in Java source using a symbol solver for accurate semantic analysis.
- Format-Preserving Printing - Retains original whitespace, comments, and formatting when modifying the AST and regenerating source code.
- Java Code Generators - Generates Java source code programmatically by building an AST from scratch and rendering it as text.
- Java Parsers - Parses Java source code up to version 12 into an Abstract Syntax Tree for analysis and manipulation.
- Java Source Code Analyzers - Parses Java source code into an AST to inspect, query, and analyze code structure, patterns, and comments.
- Source Code Transformation Engines - Identifies code patterns in parsed Java source and programmatically modifies them, for example renaming classes.
- Java Source Code Transformers - Programmatically modifies parsed Java source code by traversing and editing the AST with lexical formatting preservation.
- Source Code Generators - Creates Java source code programmatically by building an Abstract Syntax Tree from scratch and rendering it as text.
- Abstract Syntax Tree Tools - Traverses and modifies the Abstract Syntax Tree of parsed Java code to support programmatic refactoring or analysis.
- AST Traversal Engines - Walks and modifies the Abstract Syntax Tree of parsed Java code to support programmatic refactoring or analysis.
- AST Visitor Patterns - Walks the AST using the Visitor design pattern to inspect or transform nodes without manual recursion.
- Parsing Recovery - Continues parsing after syntax errors to produce a partial AST representing valid parts of the source code.
- Cross-File Analysis Pipelines - Processes all source files in a project at once to enable bulk operations and inter-file pattern detection.
- Project-Wide Source Analyzers - Processes all source files in a project at once to enable cross-file analysis and bulk operations.
- Comment Association Engines - Extracts and attaches comments from source code to corresponding AST nodes for documentation or analysis.
- Comment Extraction Engines - Extracts and associates comments from source code with the corresponding AST nodes for documentation or analysis.
- Project-Wide Source Analyzers - Processes all source files in a Java project at once to enable bulk operations and cross-file analysis workflows.
- Java Comment Parsers - Extracts and associates comments from source code with the corresponding AST nodes for documentation or analysis.
- AST Node Querying - Accesses and queries specific parts of the parsed syntax tree to retrieve information about the source code.
- Development Utilities - Tools for parsing, modifying, and generating Java code.
- Metaprogramming and Compilers - Java 1.8 Parser and Abstract Syntax Tree.
Star history
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