Abstract Syntax TreeEdit

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An Abstract Syntax Tree or AST is an hierarchical representation produced by a parser when recognizing a document. The structure of the tree itself encodes the relationship between the nodes: for example, the expression a = b might be represented as an "assignment node" whose children are "a" and "b"; the "=" symbol itself need not be stored in the tree because the assignment node itself embodies the relationship between "a" and "b".

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