83 lines
2.7 KiB
Java
83 lines
2.7 KiB
Java
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// ESLoader.java
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// FESI Copyright (c) Jean-Marc Lugrin, 1999
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package FESI.Data;
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/**
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* Descripe the compatibility of a method, allowing to
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* postpone the choice of the method to call until all
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* potentially compatible ones have been examined.
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*/
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class CompatibilityDescriptor {
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int distance;
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boolean [] convertToChar = null; // flag to indicate if conversion to char is needed
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Object [] convertedArrays = null; // Converted array if any needed
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/*
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* Create a new descrptor (note that there is a predefined one for
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* incompatible parameters).
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* @param distance -1 if incompatible, or evaluation of conversion distance
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* @param convertToChar Optional flag for each parameter
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* @param convertedArrays Optional list of converted arrays
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*/
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CompatibilityDescriptor(int distance,
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boolean[] convertedToChar,
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Object[] convertedArrays) {
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this.distance = distance;
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if (distance>=0) {
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this.convertToChar = convertedToChar;
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this.convertedArrays = convertedArrays;
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}
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}
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/** Return true if the method is compatible with the parameters */
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public boolean isCompatible() {
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return distance>=0;
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}
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/** Return the distance between perfect compatibility and this one */
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public int getDistance() {
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return distance;
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}
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/** Convert the parameters for this method call */
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public void convert(Object params[]) {
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if (params != null && distance>=0) {
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// Modify the parameters
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int n = params.length;
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if (convertToChar!=null) {
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for (int i=0; i<n; i++) {
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if (convertToChar[i]) {
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String s = (String) params[i];
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Character c = new Character(s.charAt(0));
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params[i] = c;
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}
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}
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}
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if (convertedArrays!=null) {
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for (int i=0; i<n; i++) {
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if (convertedArrays[i] != null) {
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params[i] = convertedArrays[i];
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}
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}
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}
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}
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} // convert
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} // class CompatibilityDescriptor
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