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/*
 * FindBugs - Find bugs in Java programs
 * Copyright (C) 2003-2005 University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.detect;

import org.apache.bcel.Const;

import edu.umd.cs.findbugs.BugInstance;
import edu.umd.cs.findbugs.BugReporter;
import edu.umd.cs.findbugs.BytecodeScanningDetector;
import edu.umd.cs.findbugs.StatelessDetector;

public class FindFloatMath extends BytecodeScanningDetector implements StatelessDetector {
    private final BugReporter bugReporter;

    public FindFloatMath(BugReporter bugReporter) {
        this.bugReporter = bugReporter;
    }

    @Override
    public void sawOpcode(int seen) {
        switch (seen) {
        case Const.FMUL:
        case Const.FDIV:
            if (getFullyQualifiedMethodName().indexOf("float") == -1 && getFullyQualifiedMethodName().indexOf("Float") == -1
                    && getFullyQualifiedMethodName().indexOf("FLOAT") == -1) {
                bugReporter.reportBug(new BugInstance(this, "FL_MATH_USING_FLOAT_PRECISION", LOW_PRIORITY)
                        .addClassAndMethod(this).addSourceLine(this));
            }
            break;
        case Const.FCMPG:
        case Const.FCMPL:
            break;
        case Const.FADD:
        case Const.FSUB:
        case Const.FREM:
            if (getFullyQualifiedMethodName().indexOf("float") == -1 && getFullyQualifiedMethodName().indexOf("Float") == -1
                    && getFullyQualifiedMethodName().indexOf("FLOAT") == -1) {
                bugReporter.reportBug(new BugInstance(this, "FL_MATH_USING_FLOAT_PRECISION", NORMAL_PRIORITY).addClassAndMethod(
                        this).addSourceLine(this));
            }
            break;
        default:
            break;
        }
    }
}