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2. Parse tree - Wikipedia

   en.wikipedia.org/wiki/Parse_tree

   A simple parse tree. A parse tree is made up of nodes and branches. [4] In the picture the parse tree is the entire structure, starting from S and ending in each of the leaf nodes (John, ball, the, hit). In a parse tree, each node is either a root node, a branch node, or a leaf node. In the above example, S is a root node, NP and VP are branch ...

3. Compiler-compiler - Wikipedia

   en.wikipedia.org/wiki/Compiler-compiler

   Compiler-compilers exist in many flavors, including bottom-up rewrite machine generators (see JBurg) used to tile syntax trees according to a rewrite grammar for code generation, and attribute grammar parser generators (e.g. ANTLR can be used for simultaneous type checking, constant propagation, and more during the parsing stage).

4. ANTLR - Wikipedia

   en.wikipedia.org/wiki/ANTLR

   A language is specified using a context-free grammar expressed using Extended Backus–Naur Form (EBNF). [citation needed] [6] ANTLR can generate lexers, parsers, tree parsers, and combined lexer-parsers. Parsers can automatically generate parse trees or abstract syntax trees, which can be further processed with tree parsers. ANTLR provides a ...

5. Tree-sitter (parser generator) - Wikipedia

   en.wikipedia.org/wiki/Tree-sitter_(parser_generator)

   Tree-sitter parsers have been written for these languages and many others. [11] GitHub uses Tree-sitter to support in-browser symbolic code navigation in Git repositories. [12] Tree-sitter uses a GLR parser, a type of LR parser. [13] [14] [12] Tree-sitter was originally developed by GitHub for use in the Atom text editor, where it was first ...

6. Syntax (programming languages) - Wikipedia

   en.wikipedia.org/wiki/Syntax_(programming_languages)

   The parsing stage itself can be divided into two parts: the parse tree, or "concrete syntax tree", which is determined by the grammar, but is generally far too detailed for practical use, and the abstract syntax tree (AST), which simplifies this into a usable form. The AST and contextual analysis steps can be considered a form of semantic ...

7. Abstract syntax tree - Wikipedia

   en.wikipedia.org/wiki/Abstract_syntax_tree

   An abstract syntax tree (AST) is a data structure used in computer science to represent the structure of a program or code snippet. It is a tree representation of the abstract syntactic structure of text (often source code) written in a formal language. Each node of the tree denotes a construct occurring in the text.

8. Parser Grammar Engine - Wikipedia

   en.wikipedia.org/wiki/Parser_Grammar_Engine

   The Parser Grammar Engine (PGE, originally the Parrot Grammar Engine) is a compiler and runtime system for Raku rules for the Parrot virtual machine. [1] PGE uses these rules to convert a parsing expression grammar into Parrot bytecode. It is therefore compiling rules into a program, unlike most virtual machines and runtimes, which store ...

9. Yacc - Wikipedia

   en.wikipedia.org/wiki/Yacc

   Yacc (Yet Another Compiler-Compiler) is a computer program for the Unix operating system developed by Stephen C. Johnson.It is a lookahead left-to-right rightmost derivation (LALR) parser generator, generating a LALR parser (the part of a compiler that tries to make syntactic sense of the source code) based on a formal grammar, written in a notation similar to Backus–Naur form (BNF). [1]