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Represents assignment expressions with shorthand arithmetic operations ('+=','-=', …)

#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 enclosing element.

#lhs: getFieldT, identT, indexedT
ID of the left hand side of this assignment expression.

'operator': atom
assignment operator.

#expr: expression
ID of the right hand side expression.

void assignOperation(){
	int i = 5;
	i += i;                //corresponding line to assignopT
	System.out.println(i);
}

assignopT(#id, #parent, #encl, #lhs, '+', #expr),
execT(#parent, ..., #encl, #id),
methodT(#encl, ..., 'assignOperation', [], type(basic, void, 0), [], ...),
identT(#lhs, #id, #encl, 'i', ...),
identT(#expr, #id, #encl, 'i', ...),

ast_node_def('Java',assignopT,[
     ast_arg(id,      mult(1,1,no ), id,  [assignopT]), % <-- convention!!!
     ast_arg(parent,  mult(1,1,no ), id,  [id]), % <-- convention!!!
     ast_arg(encl,    mult(1,1,no ), id,  [methodT, constructorT, classInitializerT, fieldT]),
     ast_arg(lhs,     mult(1,1,no ), id,  [getFieldT, identT, indexedT]),
     ast_arg(operator,mult(1,1,no ), attr,[atom]),
     ast_arg(expr,    mult(1,1,no ), id,  [expressionType])
]).