org.evosuite.symbolic.vm.string.buffer.StringBuffer_Init Maven / Gradle / Ivy

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/**
 * Copyright (C) 2010-2018 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 .
 */
package org.evosuite.symbolic.vm.string.buffer;

import org.evosuite.symbolic.expr.ref.ReferenceConstant;
import org.evosuite.symbolic.expr.str.StringValue;
import org.evosuite.symbolic.vm.SymbolicFunction;
import org.evosuite.symbolic.vm.SymbolicEnvironment;
import org.evosuite.symbolic.vm.SymbolicHeap;

public abstract class StringBuffer_Init extends SymbolicFunction {

	private static final String INIT = "";

	public StringBuffer_Init(SymbolicEnvironment env, String desc) {
		super(env, Types.JAVA_LANG_STRING_BUFFER, INIT, desc);
	}

	public static final class StringBufferInit_S extends StringBuffer_Init {

		public StringBufferInit_S(SymbolicEnvironment env) {
			super(env, Types.STR_TO_VOID_DESCRIPTOR);

		}

		/**
		 * new StringBuffer(String)
		 */
		@Override
		public Object executeFunction() {
			ReferenceConstant symb_str_buffer = this.getSymbReceiver();
			ReferenceConstant symb_string = (ReferenceConstant) this
					.getSymbArgument(0);
			String conc_string = (String) this.getConcArgument(0);

			// get symbolic value for string argument
			StringValue string_value = this.env.heap.getField(
					Types.JAVA_LANG_STRING, SymbolicHeap.$STRING_VALUE,
					conc_string, symb_string, conc_string);

			// update symbolic heap
			this.env.heap.putField(Types.JAVA_LANG_STRING_BUFFER,
					SymbolicHeap.$STRING_BUFFER_CONTENTS, null,
					symb_str_buffer, string_value);

			// return void
			return null;
		}

	}

}