/*
 $Id: MapExpression.java 3419 2006-01-19 00:07:02Z blackdrag $

 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.

 Redistribution and use of this software and associated documentation
 ("Software"), with or without modification, are permitted provided
 that the following conditions are met:

 1. Redistributions of source code must retain copyright
    statements and notices.  Redistributions must also contain a
    copy of this document.

 2. Redistributions in binary form must reproduce the
    above copyright notice, this list of conditions and the
    following disclaimer in the documentation and/or other
    materials provided with the distribution.

 3. The name "groovy" must not be used to endorse or promote
    products derived from this Software without prior written
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    please contact info@codehaus.org.

 4. Products derived from this Software may not be called "groovy"
    nor may "groovy" appear in their names without prior written
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    trademark of The Codehaus.

 5. Due credit should be given to The Codehaus -
    http://groovy.codehaus.org/

 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
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 */
package org.codehaus.groovy.ast.expr;

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

import org.codehaus.groovy.ast.ClassHelper;
import org.codehaus.groovy.ast.GroovyCodeVisitor;

/**
 * Represents a map expression [1 : 2, "a" : "b", x : y] which creates a mutable Map
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 * @version $Revision: 3419 $
 */
public class MapExpression extends Expression {
    private List mapEntryExpressions;

    public MapExpression() {
        this(new ArrayList());
    }
    
    public MapExpression(List mapEntryExpressions) {
        this.mapEntryExpressions = mapEntryExpressions;
        //TODO: get the type's of the expressions to specify the
        // map type to Map<X> if possible.
        setType(ClassHelper.MAP_TYPE);
    }
    
    public void addMapEntryExpression(MapEntryExpression expression) {
        mapEntryExpressions.add(expression);
    }
    
    public List getMapEntryExpressions() {
        return mapEntryExpressions;
    }

    public void visit(GroovyCodeVisitor visitor) {
        visitor.visitMapExpression(this);
    }

    public boolean isDynamic() {
        return false;  //To change body of implemented methods use File | Settings | File Templates.
    }

    public Expression transformExpression(ExpressionTransformer transformer) {
        Expression ret = new MapExpression(transformExpressions(getMapEntryExpressions(), transformer));
        ret.setSourcePosition(this);
        return ret;        
    }
    
    public String toString() {
        return super.toString() + mapEntryExpressions;
    }

    public String getText() {
        StringBuffer sb = new StringBuffer(32);
        sb.append("[");
        int size = mapEntryExpressions.size();
        MapEntryExpression mapEntryExpression = null;
        if (size > 0) {
            mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(0);
            sb.append(mapEntryExpression.getKeyExpression().getText() + ":" + mapEntryExpression.getValueExpression().getText());
            for (int i = 1; i < size; i++) {
                mapEntryExpression = (MapEntryExpression) mapEntryExpressions.get(i);
                sb.append(", " + mapEntryExpression.getKeyExpression().getText() + ":" + mapEntryExpression.getValueExpression().getText());
                if (sb.length() > 120 && i < size - 1) {
                    sb.append(", ... ");
                    break;
                }
            }
        }
        sb.append("]");
        return sb.toString();
    }

    public void addMapEntryExpression(Expression keyExpression, Expression valueExpression) {
        addMapEntryExpression(new MapEntryExpression(keyExpression, valueExpression));
    }

}