me.themallard.bitmmo.api.analysis.util.pattern.element.FieldElement.java Source code

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Here is the source code for me.themallard.bitmmo.api.analysis.util.pattern.element.FieldElement.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.element;

import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.FieldInsnNode;

public class FieldElement implements PatternElement {
    private final FieldInsnNode insn;

    public FieldElement(FieldInsnNode insn) {
        this.insn = insn;
    }

    @Override
    public boolean matches(AbstractInsnNode ain) {
        if (!(ain instanceof FieldInsnNode))
            return false;

        if (insn.opcode() == ain.opcode() && insn.name == null && insn.owner == null && insn.desc == null)
            return true;

        if (insn.opcode() != ain.opcode())
            return false;

        FieldInsnNode fin = (FieldInsnNode) ain;

        if (insn.name != null && !fin.name.equals(insn.name))
            return false;

        if (insn.owner != null && !fin.name.equals(insn.owner))
            return false;

        if (insn.desc != null && !fin.name.equals(insn.desc))
            return false;

        return true;
    }
}