| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 2001-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id: MethodType.java,v 1.2.4.1 2005/09/05 11:18:05 pvedula Exp $ |
| */ |
| |
| package com.sun.org.apache.xalan.internal.xsltc.compiler.util; |
| |
| import java.util.Vector; |
| |
| /** |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| */ |
| public final class MethodType extends Type { |
| private final Type _resultType; |
| private final Vector _argsType; |
| |
| public MethodType(Type resultType) { |
| _argsType = null; |
| _resultType = resultType; |
| } |
| |
| public MethodType(Type resultType, Type arg1) { |
| if (arg1 != Type.Void) { |
| _argsType = new Vector(); |
| _argsType.addElement(arg1); |
| } |
| else { |
| _argsType = null; |
| } |
| _resultType = resultType; |
| } |
| |
| public MethodType(Type resultType, Type arg1, Type arg2) { |
| _argsType = new Vector(2); |
| _argsType.addElement(arg1); |
| _argsType.addElement(arg2); |
| _resultType = resultType; |
| } |
| |
| public MethodType(Type resultType, Type arg1, Type arg2, Type arg3) { |
| _argsType = new Vector(3); |
| _argsType.addElement(arg1); |
| _argsType.addElement(arg2); |
| _argsType.addElement(arg3); |
| _resultType = resultType; |
| } |
| |
| public MethodType(Type resultType, Vector argsType) { |
| _resultType = resultType; |
| _argsType = argsType.size() > 0 ? argsType : null; |
| } |
| |
| public String toString() { |
| StringBuffer result = new StringBuffer("method{"); |
| if (_argsType != null) { |
| final int count = _argsType.size(); |
| for (int i=0; i<count; i++) { |
| result.append(_argsType.elementAt(i)); |
| if (i != (count-1)) result.append(','); |
| } |
| } |
| else { |
| result.append("void"); |
| } |
| result.append('}'); |
| return result.toString(); |
| } |
| |
| public String toSignature() { |
| return toSignature(""); |
| } |
| |
| /** |
| * Returns the signature of this method that results by adding |
| * <code>lastArgSig</code> to the end of the argument list. |
| */ |
| public String toSignature(String lastArgSig) { |
| final StringBuffer buffer = new StringBuffer(); |
| buffer.append('('); |
| if (_argsType != null) { |
| final int n = _argsType.size(); |
| for (int i = 0; i < n; i++) { |
| buffer.append(((Type)_argsType.elementAt(i)).toSignature()); |
| } |
| } |
| return buffer |
| .append(lastArgSig) |
| .append(')') |
| .append(_resultType.toSignature()) |
| .toString(); |
| } |
| |
| public com.sun.org.apache.bcel.internal.generic.Type toJCType() { |
| return null; // should never be called |
| } |
| |
| public boolean identicalTo(Type other) { |
| boolean result = false; |
| if (other instanceof MethodType) { |
| final MethodType temp = (MethodType) other; |
| if (_resultType.identicalTo(temp._resultType)) { |
| final int len = argsCount(); |
| result = len == temp.argsCount(); |
| for (int i = 0; i < len && result; i++) { |
| final Type arg1 = (Type)_argsType.elementAt(i); |
| final Type arg2 = (Type)temp._argsType.elementAt(i); |
| result = arg1.identicalTo(arg2); |
| } |
| } |
| } |
| return result; |
| } |
| |
| public int distanceTo(Type other) { |
| int result = Integer.MAX_VALUE; |
| if (other instanceof MethodType) { |
| final MethodType mtype = (MethodType) other; |
| if (_argsType != null) { |
| final int len = _argsType.size(); |
| if (len == mtype._argsType.size()) { |
| result = 0; |
| for (int i = 0; i < len; i++) { |
| Type arg1 = (Type) _argsType.elementAt(i); |
| Type arg2 = (Type) mtype._argsType.elementAt(i); |
| final int temp = arg1.distanceTo(arg2); |
| if (temp == Integer.MAX_VALUE) { |
| result = temp; // return MAX_VALUE |
| break; |
| } |
| else { |
| result += arg1.distanceTo(arg2); |
| } |
| } |
| } |
| } |
| else if (mtype._argsType == null) { |
| result = 0; // both methods have no args |
| } |
| } |
| return result; |
| } |
| |
| public Type resultType() { |
| return _resultType; |
| } |
| |
| public Vector argsType() { |
| return _argsType; |
| } |
| |
| public int argsCount() { |
| return _argsType == null ? 0 : _argsType.size(); |
| } |
| } |