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Interpreter pattern in java Turtle graphics

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computer science an abstract syntax tree  or just(syntax tree) is a tree representation of the structure of source code written in a programing language. Each node of the tree denotes a construct occurring in the source code. The syntax is abstract in not representing every detail appearing in the real syntax. For  grouping parentheses are implicit in the tree structure. and a syntactic construct like an if condition then expression may be denoted by means of a single node with three branches.

This  abstract syntax trees from syntax tree. traditionally designated parse tree which are often  built by a parser during the source code translation and  process. Once built additional information is added to the( AST) by means of subsequent processing. e.g.,.

Abstract syntax trees are also used in program analysis and programem systems...................


Apr 12th, 2015

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