content: /*
   * 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.impl;
  
  import io.activej.codegen.Context;
  import io.activej.codegen.expression.LocalVariable;
  import io.activej.common.annotation.ExposedInternals;
  import org.jetbrains.annotations.Nullable;
  import org.objectweb.asm.Type;
  import org.objectweb.asm.commons.GeneratorAdapter;
  
  /**
   * Defines methods which allow to create a local variable
   */
  @ExposedInternals
  public final class VarLocal implements LocalVariable {
  	public static final int VOID = -1;
  	public static final VarLocal VAR_LOCAL_VOID = new VarLocal(VOID);
  
  	public final int local;
  
  	public VarLocal(int local) {
  		this.local = local;
  	}
  
  	@Override
  	public Type load(Context ctx) {
  		if (local == VOID) return Type.VOID_TYPE;
  		GeneratorAdapter g = ctx.getGeneratorAdapter();
  		g.loadLocal(local);
  		return g.getLocalType(local);
  	}
  
  	@Override
  	public @Nullable Object beginStore(Context ctx) {
  		return null;
  	}
  
  	@Override
  	public void store(Context ctx, Object storeContext, Type type) {
  		if (local == VOID) return;
  		GeneratorAdapter g = ctx.getGeneratorAdapter();
  		g.storeLocal(local);
  	}
  
  	@Override
  	public void store(Context ctx) {
  		if (local == VOID) return;
  		GeneratorAdapter g = ctx.getGeneratorAdapter();
  		g.storeLocal(local);
  	}
  }
  