/*******************************************************************************
 * Copyright (c) 2000, 2010 QNX Software Systems and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     QNX Software Systems - Initial API and implementation
 *     Jens Elmenthaler (Verigy) - Added Full GDB pretty-printing support (bug 302121)
 *******************************************************************************/
package org.eclipse.cdt.dsf.mi.service.command.output;

import java.util.ArrayList;
import java.util.List;

/**
 * GDB/MI var-list-children
 * -var-list-children var2
 *  ^done,numchild="6",children={child={name="var2.0",exp="0",numchild="0",type="char"},child={name="var2.1",exp="1",numchild="0",type="char"},child={name="var2.2",exp="2",numchild="0",type="char"},child={name="var2.3",exp="3",numchild="0",type="char"},child={name="var2.4",exp="4",numchild="0",type="char"},child={name="var2.5",exp="5",numchild="0",type="char"}}
 *
 */
public class MIVarListChildrenInfo extends MIInfo {

	MIVar[] children;
	int numchild;
	private boolean hasMore = false;
	
	public MIVarListChildrenInfo(MIOutput record) {
		super(record);
        List<MIVar> aList = new ArrayList<MIVar>();
        if (isDone()) {
            MIOutput out = getMIOutput();
            MIResultRecord rr = out.getMIResultRecord();
            if (rr != null) {
                MIResult[] results =  rr.getMIResults();
                for (int i = 0; i < results.length; i++) {
                    String var = results[i].getVariable();
                    MIValue value = results[i].getMIValue();

                    if (var.equals("numchild")) { //$NON-NLS-1$
                        if (value instanceof MIConst) {
                            String str = ((MIConst)value).getString();
                            try {
                                numchild = Integer.parseInt(str.trim());
                            } catch (NumberFormatException e) {
                            }
                        }
                    } else if (var.equals("children")) { //$NON-NLS-1$
                        parseChildren(value, aList);
					} else if (var.equals("has_more")) { //$NON-NLS-1$
						if (value instanceof MIConst) {
							String str = ((MIConst) value).getString();
							if (str.trim().equals("1")) { //$NON-NLS-1$
								hasMore = true;
							}
						}
					}
                }
            }
        }
        children = aList.toArray(new MIVar[aList.size()]);
	}

	public MIVar[] getMIVars() {
		return children;
	}

	/**
	 * @return Whether the are more children to fetch.
	 * 
	 * @since 4.0
	 */
	public boolean hasMore() {
		return hasMore;
	}
	
	/*
	 * Some gdb MacOSX do not return a MITuple so we have
	 * to check for different format.
	 * See PR 81019
	 */
	private void parseChildren(MIValue val, List<MIVar> aList) {
		MIResult[] results = null;
		if (val instanceof MITuple) {
			results = ((MITuple)val).getMIResults();
		} else if (val instanceof MIList) {
			results = ((MIList)val).getMIResults();
		}
		if (results != null) {
			for (int i = 0; i < results.length; i++) {
				String var = results[i].getVariable();
				if (var.equals("child")) { //$NON-NLS-1$
					MIValue value = results[i].getMIValue();
					if (value instanceof MITuple) {
						aList.add(new MIVar((MITuple)value));
					}
				}
			}
		}
	}
}
