/*******************************************************************************
 * Copyright (c) 2004, 2011 IBM Corporation 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:
 *    John Camelon (IBM) - Initial API and implementation
 *    Markus Schorn (Wind River Systems)
 *******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;

import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTInitializerClause;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTConstructorInitializer;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpressionList;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;

/**
 * Initializer list in parenthesis.
 */
public class CPPASTConstructorInitializer extends ASTNode implements ICPPASTConstructorInitializer,
		IASTAmbiguityParent {

    private IASTInitializerClause[] fArguments;

    public CPPASTConstructorInitializer() {
    	setArguments(null);
	}

	public CPPASTConstructorInitializer(IASTInitializerClause[] args) {
		setArguments(args);
	}

	public CPPASTConstructorInitializer copy() {
		return copy(CopyStyle.withoutLocations);
	}

	public CPPASTConstructorInitializer copy(CopyStyle style) {
		IASTInitializerClause[] args = null;
		if (fArguments != null) {
			args = new IASTInitializerClause[fArguments.length];
			for (int i = 0; i < fArguments.length; i++) {
				args[i] = fArguments[i].copy(style);
			}
		}
		CPPASTConstructorInitializer copy = new CPPASTConstructorInitializer(args);
		copy.setOffsetAndLength(this);
		if (style == CopyStyle.withLocations) {
			copy.setCopyLocation(this);
		}
		return copy;
	}

	public IASTInitializerClause[] getArguments() {
        return fArguments;
    }

    public void setArguments(IASTInitializerClause[] arguments) {
        assertNotFrozen();
        if (arguments == null) {
        	fArguments= IASTExpression.EMPTY_EXPRESSION_ARRAY;
        } else {
            fArguments= arguments;
        	for (IASTInitializerClause arg : arguments) {
				arg.setParent(this);
				arg.setPropertyInParent(ARGUMENT);
			}
		}
    }

    @Override
	public boolean accept(ASTVisitor action) {
        if (action.shouldVisitInitializers) {
		    switch (action.visit(this)) {
	            case ASTVisitor.PROCESS_ABORT: return false;
	            case ASTVisitor.PROCESS_SKIP: return true;
	            default: break;
	        }
		}

        for (IASTInitializerClause arg : fArguments) {
        	if (!arg.accept(action))
        		return false;
        }

		if (action.shouldVisitInitializers && action.leave(this) == ASTVisitor.PROCESS_ABORT)
			return false;

		return true;
    }

	public void replace(IASTNode child, IASTNode other) {
		for (int i = 0; i < fArguments.length; ++i) {
			if (child == fArguments[i]) {
				other.setPropertyInParent(child.getPropertyInParent());
				other.setParent(child.getParent());
				fArguments[i] = (IASTExpression) other;
			}
		}
	}

    @Deprecated
	public IASTExpression getExpression() {
    	if (fArguments.length == 0)
    		return null;
    	if (fArguments.length == 1) {
    		IASTInitializerClause arg = fArguments[0];
    		if (arg instanceof IASTExpression)
    			return (IASTExpression) arg;
    		return null;
    	}

    	CPPASTExpressionList result= new CPPASTExpressionList();
    	for (IASTInitializerClause arg : fArguments) {
    		if (arg instanceof IASTExpression) {
    			result.addExpression(((IASTExpression) arg).copy());
    		}
    	}
    	result.setParent(this);
    	result.setPropertyInParent(EXPRESSION);
        return result;
    }

    @Deprecated
	public void setExpression(IASTExpression expression) {
        assertNotFrozen();
        if (expression == null) {
        	setArguments(null);
        } else if (expression instanceof ICPPASTExpressionList) {
        	setArguments(((ICPPASTExpressionList) expression).getExpressions());
        } else {
        	setArguments(new IASTExpression[] {expression});
        }
    }
}