package cpw.mods.fml.common.discovery.asm;
import java.util.LinkedList;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import com.google.common.collect.Lists;
public class ModMethodVisitor extends MethodVisitor
{
private ASMModParser discoverer;
private boolean inCode;
private LinkedList<Label> labels = Lists.newLinkedList();
private String foundProperties;
private boolean validProperties;
public ModMethodVisitor(String name, ASMModParser discoverer)
{
super(Opcodes.ASM4);
this.discoverer = discoverer;
}
@Override
public void visitCode()
{
labels.clear();
}
@Override
public void visitLdcInsn(Object cst)
{
if (cst instanceof String && labels.size() == 1)
{
foundProperties = (String) cst;
}
}
@Override
public void visitInsn(int opcode)
{
if (Opcodes.ARETURN == opcode && labels.size() == 1 && foundProperties != null)
{
validProperties = true;
}
}
@Override
public void visitLabel(Label label)
{
labels.push(label);
}
@Override
public void visitEnd()
{
if (validProperties)
{
discoverer.setBaseModProperties(foundProperties);
}
}
}