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/*
 * Copyright (c) 2002 - 2006 IBM Corporation.
 * 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:
 *     IBM Corporation - initial API and implementation
 */
package com.ibm.wala.cast.java.loader;

import com.ibm.wala.cast.tree.CAstEntity;
import com.ibm.wala.cast.tree.CAstType;
import com.ibm.wala.core.util.strings.Atom;
import com.ibm.wala.types.Descriptor;
import com.ibm.wala.types.Selector;
import com.ibm.wala.types.TypeName;

public class Util {

  public static Selector methodEntityToSelector(CAstEntity methodEntity) {
    Atom name = Atom.findOrCreateUnicodeAtom(methodEntity.getName());
    CAstType.Function signature = (CAstType.Function) methodEntity.getType();
    // Use signature to determine # of args; (entity's args includes 'this')
    TypeName retTypeName = TypeName.string2TypeName(signature.getReturnType().getName());
    TypeName[] argTypeNames =
        (signature.getArgumentCount() == 0) ? null : new TypeName[signature.getArgumentCount()];

    int i = 0;
    for (CAstType argType : signature.getArgumentTypes()) {
      argTypeNames[i] = TypeName.string2TypeName(argType.getName());
      ++i;
    }

    Descriptor desc = Descriptor.findOrCreate(argTypeNames, retTypeName);

    return new Selector(name, desc);
  }

  public static Atom fieldEntityToAtom(CAstEntity fieldEntity) {
    return Atom.findOrCreateUnicodeAtom(fieldEntity.getName());
  }
}