me.themallard.bitmmo.api.analysis.util.pattern.Pattern.java Source code

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Here is the source code for me.themallard.bitmmo.api.analysis.util.pattern.Pattern.java

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/* Copyright (C) 2015 maaatts
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>. */

package me.themallard.bitmmo.api.analysis.util.pattern;

import java.util.List;

import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.InsnList;
import org.objectweb.asm.tree.MethodNode;

import me.themallard.bitmmo.api.analysis.util.pattern.element.PatternElement;

public class Pattern {
    final List<PatternElement> elements;

    public Pattern(List<PatternElement> elements) {
        this.elements = elements;
    }

    public boolean contains(ClassNode cn) {
        for (MethodNode mn : cn.methods)
            if (contains(mn.instructions))
                return true;

        return false;
    }

    public boolean contains(InsnList list) {
        return getOffset(list) != -1;
    }

    public int getOffset(InsnList list) {
        for (int i = 0; i < list.size() - elements.size(); i++) {
            boolean x = true;
            for (int j = 0; j < elements.size(); j++) {
                if (!elements.get(j).matches(list.get(i + j))) {
                    x = false;
                    break;
                }
            }

            if (x)
                return i;
        }

        return -1;
    }
}