Parser / Compiler - (Abstract) Syntax Tree (AST)

About

An Abstract Syntax Tree (AST) is a syntax tree. It represents the structure of the grammar at a higher level than a concrete syntax tree (parse tree) and thus easier to manipulate.

At the opposite of a concrete syntax tree, an abstract syntax tree has only the syntactic structure of the code.

For instance, an AST would not known if a literal was enclosed by a double or single quote.

An Abstract Syntax Tree (AST) is created by a parser.

Explorer

The site astexporer ¹⁾ permits to create AST from compiler library for different languages.

• Choose your language
• Choose your compiler if many
• Copy your code
• And explore the AST in the right pane.

Implementation

• https://github.com/syntax-tree/hast