net.sourceforge.pmd.lang.jsp.ast.DumpFacade Maven / Gradle / Ivy

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/**
 * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
 */
package net.sourceforge.pmd.lang.jsp.ast;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.pmd.lang.ast.Node;

public class DumpFacade extends JspParserVisitorAdapter {

	private PrintWriter writer;
	private boolean recurse;

	public void initializeWith(Writer writer, String prefix, boolean recurse, JspNode node) {
		this.writer = writer instanceof PrintWriter ? (PrintWriter) writer : new PrintWriter(writer);
		this.recurse = recurse;
		this.visit(node, prefix);
		try {
			writer.flush();
		} catch (IOException e) {
			throw new RuntimeException("Problem flushing PrintWriter.", e);
		}
	}

	@Override
	public Object visit(JspNode node, Object data) {
		dump(node, (String) data);
		if (recurse) {
			return super.visit(node, data + " ");
		} else {
			return data;
		}
	}

	private void dump(Node node, String prefix) {
		//
		// Dump format is generally composed of the following items...
		//

		// 1) Dump prefix
		writer.print(prefix);

		// 2) JJT Name of the Node
		writer.print(node.toString());

		//
		// If there are any additional details, then:
		// 1) A colon
		// 2) The Node.getImage() if it is non-empty
		// 3) Extras in parentheses
		//

		// Standard image handling
		String image = node.getImage();

		// Extras
		List extras = new ArrayList<>();

		// Other extras
		if (node instanceof ASTAttribute) {
			extras.add("name=[" + ((ASTAttribute) node).getName() + "]");
		} else if (node instanceof ASTDeclaration) {
			extras.add("name=[" + ((ASTDeclaration) node).getName() + "]");
		} else if (node instanceof ASTDoctypeDeclaration) {
			extras.add("name=[" + ((ASTDoctypeDeclaration) node).getName() + "]");
		} else if (node instanceof ASTDoctypeExternalId) {
			extras.add("uri=[" + ((ASTDoctypeExternalId) node).getUri() + "]");
			if (((ASTDoctypeExternalId) node).getPublicId().length() > 0) {
				extras.add("publicId=[" + ((ASTDoctypeExternalId) node).getPublicId() + "]");
			}
		} else if (node instanceof ASTElement) {
			extras.add("name=[" + ((ASTElement) node).getName() + "]");
			if (((ASTElement) node).isEmpty()) {
				extras.add("empty");
			}
		} else if (node instanceof ASTJspDirective) {
			extras.add("name=[" + ((ASTJspDirective) node).getName() + "]");
		} else if (node instanceof ASTJspDirectiveAttribute) {
			extras.add("name=[" + ((ASTJspDirectiveAttribute) node).getName() + "]");
			extras.add("value=[" + ((ASTJspDirectiveAttribute) node).getValue() + "]");
		}

		// Output image and extras
		if (image != null || !extras.isEmpty()) {
			writer.print(':');
			if (image != null) {
				writer.print(image);
			}
			for (String extra : extras) {
				writer.print('(');
				writer.print(extra);
				writer.print(')');
			}
		}

		writer.println();
	}
}