FieldRef.java

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package org.mule.devkit.model.code;


/**
 * Field Reference
 */

public class FieldRef extends AbstractExpression implements AssignmentTarget {
    /**
     * Object expression upon which this field will be accessed, or
     * null for the implicit 'this'.
     */
    private Generable object;

    /**
     * Name of the field to be accessed. Either this or {@link #var} is set.
     */
    private String name;

    /**
     * Variable to be accessed.
     */
    private Variable var;

    /**
     * Indicates if an explicit this should be generated
     */
    private boolean explicitThis;

    /**
     * Field reference constructor given an object expression and field name
     *
     * @param object Expression for the object upon which
     *               the named field will be accessed,
     * @param name   Name of field to access
     */
    FieldRef(Expression object, String name) {
        this(object, name, false);
    }

    FieldRef(Expression object, Variable v) {
        this(object, v, false);
    }

    /**
     * Static field reference.
     */
    FieldRef(Type type, String name) {
        this(type, name, false);
    }

    FieldRef(Type type, Variable v) {
        this(type, v, false);
    }

    FieldRef(Generable object, String name, boolean explicitThis) {
        this.explicitThis = explicitThis;
        this.object = object;
        if (name.indexOf('.') >= 0) {
            throw new IllegalArgumentException("Field name contains '.': " + name);
        }
        this.name = name;
    }

    FieldRef(Generable object, Variable var, boolean explicitThis) {
        this.explicitThis = explicitThis;
        this.object = object;
        this.var = var;
    }

    public void generate(Formatter f) {
        String name = this.name;
        if (name == null) {
            name = var.name();
        }

        if (object != null) {
            f.g(object).p('.').p(name);
        } else {
            if (explicitThis) {
                f.p("this.").p(name);
            } else {
                f.id(name);
            }
        }
    }

    public Expression assign(Expression rhs) {
        return ExpressionFactory.assign(this, rhs);
    }

    public Expression assignPlus(Expression rhs) {
        return ExpressionFactory.assignPlus(this, rhs);
    }
}