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Java API for XML Processing Reference Implementation
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/*
* $Id: MethodType.java,v 1.10 2010-11-01 04:34:19 joehw 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; ilastArgSig 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();
}
}