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identT(#id, #parent, #encl, #refToAccessedElement)

Represents an access to

  1. a method parameter or
  2. a local variable or
  3. 'this' (represented by a thisT 1) fact) or
  4. 'super' (represented by a superT 2) fact)
Note that identT represents no field accesses. Field accesses are represented by fieldAccessT.
Changes in JTransformer 4.0
  • Removed “name” argument
  • The access to the Java constant 'null' is not longer represented as an identT but as a literalT
  • In JTransformer versions < 2.6.0 identT also represented class literals, and qualified type names. Class literals are now modeled with selectT. Qualified type names in static method calls and static field accesses are now represented with staticTypeRefT.

Arguments

#id: id
the unique ID assigned to this fact.

#parent: id
ID of the parent node.

#encl: methodT, constructorT, classInitializerT, fieldT
ID of the fact that represents the method, constructor, class initializer or field definition that contains this variable access.

#refToAccessedElement: localT, paramT, thisT, superT
ID of the accessed element.

Sample Java Code

public Object m(int i) {
	int j=0;
        ...
        x = i + j;
        ...
        Object o = super.abc;
        ...
        return this;
}

Its PEF Representation

For better readability IDs are represented by symbolic constants prefixed with #.

methodT(#encl, ..., 'm', [], #refToObject, [], ...).
  paramT(#symbol1, ..., #refToInt, 'i').
  localT(#symbol2, ..., #encl, #refToInt, 'j', ...).
...
operationT(#parent, ..., #encl, [#id1, #id2], '+', 0).
  identT(#id1, #parent, #encl, #symbol1).
  identT(#id2, #parent, #encl, #symbol2).
...
localT(#symbol3, ..., #encl, #refToObject, 'o', #fieldAccess).
  fieldAccessT(#fieldAccess, #symbol3, #encl, #id3, #abc, #refToFieldType).
    identT(#id3, #fieldAccess, #encl, #superclass).
    superT(#id3).

...
returnT(#retid, ..., #encl, #ident).
  identT(#ident, #retid, #encl, #classOfThis).
  thisT(#ident).

AST Specification

ast_node_type_spec(identT,[
     ast_arg(id,      mult(1,1,no ), id,  [identT]),
     ast_arg(parent,  mult(1,1,no ), id,  [id]), 
     ast_arg(encl,    mult(1,1,no ), id,  [methodT, constructorT, classInitializerT, fieldT]), 
     ast_arg(ref,     mult(1,1,no ), id,  [classT,localT,paramT]) 
]).
1) , 2)
added in Version 4.1
research/jtransformer/api/java/pefs/4.2/identt.txt · Last modified: 2018/12/20 12:21 by Günter Kniesel

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