CommonFieldDesignatorNode.java

package edu.udel.cis.vsl.abc.ast.node.common.compound;

import java.io.PrintStream;

import edu.udel.cis.vsl.abc.ast.IF.ASTException;
import edu.udel.cis.vsl.abc.ast.node.IF.ASTNode;
import edu.udel.cis.vsl.abc.ast.node.IF.IdentifierNode;
import edu.udel.cis.vsl.abc.ast.node.IF.compound.FieldDesignatorNode;
import edu.udel.cis.vsl.abc.ast.node.IF.expression.ExpressionNode;
import edu.udel.cis.vsl.abc.ast.node.common.CommonASTNode;
import edu.udel.cis.vsl.abc.token.IF.Source;

public class CommonFieldDesignatorNode extends CommonASTNode
		implements
			FieldDesignatorNode {

	public CommonFieldDesignatorNode(Source source, IdentifierNode field) {
		super(source, field);
	}

	@Override
	public IdentifierNode getField() {
		return (IdentifierNode) child(0);
	}

	@Override
	public void setField(IdentifierNode name) {
		setChild(0, name);
	}

	@Override
	protected void printBody(PrintStream out) {
		out.print("Field");
	}

	@Override
	public FieldDesignatorNode copy() {
		return new CommonFieldDesignatorNode(getSource(),
				duplicate(getField()));
	}

	@Override
	public NodeKind nodeKind() {
		return NodeKind.FIELD_DESIGNATOR;
	}

	@Override
	public ASTNode setChild(int index, ASTNode child) {
		if (index != 0)
			throw new ASTException(
					"CommonFieldDesignatorNode has only one child, but saw index "
							+ index);
		if (!(child == null || child instanceof ExpressionNode))
			throw new ASTException(
					"Child of CommonFieldDesignatorNode must be an IdentifierNode, but saw "
							+ child + " with type " + child.nodeKind());
		return super.setChild(index, child);
	}
}