Represents the execution of an expression in a block.
Converts an expression to a statement.

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

#parent: id
ID of the parent node.

#encl: methodT, constructorT, classInitializerT
ID of the enclosing element.

#expr: expression,classT
ID of the expression to be executed. In the case of a local class the ID of that class.

void myExe(){
	int i =10;
	int j = 9;
	j = i * j;//corresponding code line to execT
}

methodT(#Method, _, 'myExe', [], type(basic, void, 0), [], #Block),
blockT(#Block, #Method, #Method, [_, _, #ExecT]),
...
execT(#ExecT, #Block, #Method, #Assign),    %% execT
assignT(#Assign, #ExecT, #Method, _, _),
...

ast_node_def('Java',execT,[
     ast_arg(id,      mult(1,1,no ), id,  [execT]), % <-- convention!!!
     ast_arg(parent,  mult(1,1,no ), id,  [id]), % <-- convention!!!
     ast_arg(encl,    mult(1,1,no ), id,  [methodT, constructorT, classInitializerT]),
     ast_arg(expr,    mult(1,1,no ), id,  [expressionType,classT])
]).