VariableNamePrefix computed for VariableActions

import com.github.javaparser.ast.body.Parameter;

import com.github.javaparser.ast.body.VariableDeclarator;

import com.github.javaparser.ast.expr.*;

import com.github.javaparser.ast.stmt.CatchClause;

import com.github.javaparser.ast.stmt.ExplicitConstructorInvocationStmt;

import com.github.javaparser.ast.stmt.ExpressionStmt;

import com.github.javaparser.ast.stmt.ForEachStmt;

import com.github.javaparser.ast.stmt.*;

import com.github.javaparser.resolution.Resolvable;

import com.github.javaparser.resolution.declarations.ResolvedMethodLikeDeclaration;

import com.github.javaparser.symbolsolver.javaparsermodel.declarations.JavaParserFieldDeclaration;

    @Override

    public void visit(NameExpr n, Action action) {

        String prefix = this.getNamePrefix(n);

        String prefix = this.getNamePrefix(n); // Add a prefix to the name ("this." or "CLASS.this.")

        n.setName(new SimpleName(prefix + n.getNameAsString()));

        acceptAction(n, action);

    }

    /** Checks whether a NameExpr representing a variable

     * is a Field and returns the correct prefix to reference it */

    protected String getNamePrefix(NameExpr n){

        // There are three constructs whose variable cannot be resolved due to: getNameAsExpression() function

        // FieldDeclaration, VariableDeclarationExpr, and ForEachStmt. They must be treated separately

        // 1. FieldDeclaration

        if (graphNode.getAstNode() instanceof FieldDeclaration)

            return "this.";

        else {

        // 2. VariableDeclarationExpr

        if (graphNode.getAstNode() instanceof ExpressionStmt) {

            Expression expr = ((ExpressionStmt) graphNode.getAstNode()).getExpression();

            if (expr instanceof AssignExpr && n.resolve().isField()){

            if (expr instanceof VariableDeclarationExpr)

                return "";

        }

        // 3. ForEachStmt

        if (graphNode.getAstNode() instanceof ForEachStmt)

            throw new RuntimeException("ForEachStmt internal structure is still a mystery for me");// TODO: Execute and see the internal structure

        // The rest of nodes can be resolved properly

        if (n.resolve().isField() && !n.resolve().asField().isStatic()){

            JavaParserFieldDeclaration fieldDeclaration = (JavaParserFieldDeclaration) n.resolve();

            Node decClass = ASTUtils.getClassNode(fieldDeclaration.getVariableDeclarator());

            Node nClass = ASTUtils.getClassNode(n);

                return "this.";

            return ((ClassOrInterfaceDeclaration) decClass).getNameAsString() + ".this.";

        }

        }

        return "";

    }

}