/*
 * Copyright 2014, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS 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 THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jf.smalidea.psi.impl;

import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiParameter;
import com.intellij.psi.PsiParameterList;
import org.jetbrains.annotations.NotNull;
import org.jf.smalidea.psi.SmaliElementTypes;
import org.jf.smalidea.psi.stub.SmaliMethodParamListStub;

import java.util.Arrays;

public class SmaliMethodParamList extends SmaliStubBasedPsiElement<SmaliMethodParamListStub>
        implements PsiParameterList {
    public SmaliMethodParamList(@NotNull SmaliMethodParamListStub stub) {
        super(stub, SmaliElementTypes.METHOD_PARAM_LIST);
    }

    public SmaliMethodParamList(@NotNull ASTNode node) {
        super(node);
    }

    @NotNull @Override public SmaliMethodParameter[] getParameters() {
        return getStubOrPsiChildren(SmaliElementTypes.METHOD_PARAMETER, new SmaliMethodParameter[0]);
    }

    @Override public int getParameterIndex(PsiParameter parameter) {
        if (!(parameter instanceof SmaliMethodParameter)) {
            return -1;
        }
        return Arrays.asList(getParameters()).indexOf(parameter);
    }

    @Override public int getParametersCount() {
        return getParameters().length;
    }

    /**
     * Returns the number of registers needed for the parameters in this parameter list
     *
     * Note: this does *not* include the implicit "this" parameter, if applicable
     */
    public int getParameterRegisterCount() {
        int count = 0;
        for (SmaliMethodParameter param: getParameters()) {
            count += param.getRegisterCount();
        }
        return count;
    }
}