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research:jtransformer:api:meta:meta-model:ast_sub_tree [2011/02/15 15:19]
Günter Kniesel
research:jtransformer:api:meta:meta-model:ast_sub_tree [2018/05/09 01:59] (current)
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 + -> [[..:​..:​notation|Notation used in the following]]
 +**ast_sub_tree**(?​Language,​ ?​ArgumentName) is nondet
 +  * In all nodes of the AST of language arg1, the argument with
 +    name arg2 refers to a subtree of the respective AST node. 
 +    For instance, in the Java AST arguments named ''​ref''​ are references.:​
 +<Code lang-prolog> ​
 +    ast_sub_tree('​Java',​ expr). ​
 +    ast_sub_tree('​Java',​ args).
 +  * In particular, the ''​expr''​ argument used above in the definition of ''​callT''​ denotes
 +    the child expression that represents the message receiver and the ''​args''​ argument
 +    denotes the list of identities of the expressions representing message arguments.  ​
 +  * The ''​ast_sub_tree/​2''​ declarations allow language-independent ​
 +    top down traversal of an AST. Language independent bottom up traversals are supported ​
 +    by the convention that the second argument of every AST
 +    node has the name ''​parent''​ and refers to the parent node.
research/jtransformer/api/meta/meta-model/ast_sub_tree.txt · Last modified: 2018/05/09 01:59 (external edit)

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