nikic/PHP-Parser
PHP Parser
PHP-Parser is a tool that converts PHP source code into an abstract syntax tree for static analysis and programmatic manipulation. It functions as a parser, a code generator, and a static analysis framework.
The project enables the programmatic construction of abstract syntax tree nodes through a fluent interface and provides the ability to transform these trees back into formatted source code. It includes a serializer that exports abstract syntax trees to JSON format and reconstructs them from strings.
The toolset covers several capability areas, including namespace resolution, constant expression evaluation, and the traversal or modification of tree nodes using visitor patterns. These features support a range of language tooling tasks such as automated refactoring, code transformation, and the enforcement of coding standards.
Features
- PHP AST Parsers - Converts PHP source code into an abstract syntax tree to enable static analysis and programmatic manipulation of the code structure.
- Static Code Analysis - Provides a comprehensive framework for analyzing PHP source code to detect bugs and enforce standards.
- Recursive Descent Parsers - Uses a recursive descent parsing strategy to translate PHP tokens into a structured abstract syntax tree.
- AST Structure Modification - Allows for identifying, altering, or removing nodes within the AST using visitor patterns.
- AST to Source Conversion - Transforms an abstract syntax tree back into formatted PHP source code.
- PHP Development Tools - Provides the fundamental building blocks for creating PHP linters, formatters, and other language tools.
- Lexical Tokenizers - Processes source text through a lexer that emits a sequential stream of tokens for the parser.
- PHP Code Generators - Constructs AST nodes and transforms them back into formatted PHP source code.
- PHP Parsers - Converts PHP source code into an abstract syntax tree for static analysis and manipulation.
- Symbol Resolution - Analyzes the abstract syntax tree to determine the fully qualified names of classes, functions, and constants.
- Abstract Syntax Tree Specifications - Provides a standardized internal representation of PHP source code as a hierarchy of linguistic construct nodes.
- Visitor Patterns - Decouples tree structure from analysis logic using a visitor-based traversal pattern.
- JSON Serialization Libraries - Converts PHP abstract syntax tree objects to and from JSON format.
- AST Node Generation - Provides utilities for the programmatic creation of structurally valid AST nodes.
- JSON Serialization - Serializes abstract syntax trees into JSON format and reconstructs them back into tree structures.
- Compile-Time Expression Evaluation - Computes the final values of constant expressions and initializers during the analysis phase.
- Fluent Interface Patterns - Implements a fluent interface for the programmatic construction of complex abstract syntax tree structures.
- Refactoring Automation - Automates structural changes by searching and replacing specific patterns within the PHP AST.
- Source Code Transformation Engines - Enables automated modification of PHP code by transforming it through an AST.
- Source Code Generators - Programmatically creates valid PHP files by building an abstract syntax tree.
- Abstract Syntax Tree Tools - Provides utilities for serializing and manipulating PHP abstract syntax trees.
- Fault-Tolerant Parsing - Converts source code into an abstract syntax tree with support for partial trees when encountering invalid syntax.
- Static Expression Evaluation - Computes the values of constant and property initializers within the code during the analysis phase.
- Code Analysis and Refactoring - Parses source code into an abstract syntax tree.
- Static Analysis Tools - PHP parser written in PHP.
