Abstract syntax tree: Syntax, Source code, Programming language - Tapa blanda

Sinopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In computer science, an abstract syntax tree (AST), or just syntax tree, is a tree representation of the abstract syntactic structure of source code written in a programming language. Each node of the tree denotes a construct occurring in the source code. The syntax is ''abstract'' in the sense that it does not represent every detail that appears in the real syntax. For instance, grouping parentheses are implicit in the tree structure, and a syntactic construct such as an if-condition-then expression may be denoted by a single node with two branches. This makes abstract syntax trees different from concrete syntax trees, traditionally called parse trees, which are often built by the parser part of the source code translation and compiling process (despite a perhaps unintuitive naming). Once built, additional information is added to the AST by subsequent processing, e.g., semantic analysis.

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