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Dynamic class and method bytecode generator on top of ObjectWeb ASM. An expression-based fluent API abstracts the complexity of direct bytecode manipulation.

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/*
 * Copyright (C) 2020 ActiveJ LLC.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.activej.codegen.expression;

import io.activej.codegen.Context;
import org.jetbrains.annotations.Nullable;
import org.objectweb.asm.Type;

/**
 * These are basic methods for functions that allow to read the state and to process data
 */
public interface Expression {
	/**
	 * Processes data and returns its type
	 *
	 * @param ctx information about a dynamic class
	 * @return type of the processes data or {@code null} if expression throws an exception
	 */
	@Nullable Type load(Context ctx);
}