/**
 * Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite 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 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite 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 Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite.runtime.instrumentation;

import java.util.List;

import org.evosuite.runtime.instrumentation.CreateClassResetClassAdapter.StaticField;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;

public class CreateClassResetMethodAdapter extends MethodVisitor {

	private final List<StaticField> staticFields;

	private final String className;

	private final List<String> finalFields;

	public CreateClassResetMethodAdapter(MethodVisitor mv, String className,
			List<StaticField> staticFields, List<String> finalFields) {
		super(Opcodes.ASM5, mv);
		this.className = className;
		this.staticFields = staticFields;
		this.finalFields = finalFields;
	}

	@Override
	public void visitCode() {
		super.visitCode();
		for (StaticField staticField : staticFields) {

			if (!finalFields.contains(staticField.name) 
					&& !staticField.name.startsWith("__cobertura")
					&& !staticField.name.startsWith("$jacoco")
					&& !staticField.name.startsWith("$VRc") // Old Emma
					) {

				if (staticField.value != null) {
					mv.visitLdcInsn(staticField.value);
				} else {
					Type type = Type.getType(staticField.desc);
					switch (type.getSort()) {
					case Type.BOOLEAN:
					case Type.BYTE:
					case Type.CHAR:
					case Type.SHORT:
					case Type.INT:
						mv.visitInsn(Opcodes.ICONST_0);
						break;
					case Type.FLOAT:
						mv.visitInsn(Opcodes.FCONST_0);
						break;
					case Type.LONG:
						mv.visitInsn(Opcodes.LCONST_0);
						break;
					case Type.DOUBLE:
						mv.visitInsn(Opcodes.DCONST_0);
						break;
					case Type.ARRAY:
					case Type.OBJECT:
						mv.visitInsn(Opcodes.ACONST_NULL);
						break;
					}
				}
				mv.visitFieldInsn(Opcodes.PUTSTATIC, className,
						staticField.name, staticField.desc);
			}
		}

	}

}