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.serializer.def.impl;
  
  import io.activej.codegen.expression.Expression;
  import io.activej.codegen.expression.Variable;
  import io.activej.common.annotation.ExposedInternals;
  import io.activej.serializer.CompatibilityLevel;
  import io.activej.serializer.StringFormat;
  import io.activej.serializer.def.AbstractSerializerDef;
  import io.activej.serializer.def.SerializerDefWithNullable;
  import io.activej.serializer.util.BinaryOutputUtils;
  
  import static io.activej.codegen.expression.Expressions.*;
  import static io.activej.serializer.StringFormat.UTF8;
  
  @ExposedInternals
  public final class StringSerializerDef extends AbstractSerializerDef implements SerializerDefWithNullable {
  	public final StringFormat format;
  	public final boolean nullable;
  
  	@SuppressWarnings("unused") // used via reflection
  	public StringSerializerDef() {
  		this(UTF8, false);
  	}
  
  	public StringSerializerDef(StringFormat format, boolean nullable) {
  		this.format = format;
  		this.nullable = nullable;
  	}
  
  	@Override
  	public StringSerializerDef ensureNullable(CompatibilityLevel compatibilityLevel) {
  		return new StringSerializerDef(format, true);
  	}
  
  	public StringSerializerDef encoding(StringFormat format) {
  		return new StringSerializerDef(format, nullable);
  	}
  
  	@Override
  	public Class<?> getEncodeType() {
  		return String.class;
  	}
  
  	@Override
  	public Expression encode(StaticEncoders staticEncoders, Expression buf, Variable pos, Expression value, int version, CompatibilityLevel compatibilityLevel) {
  		return set(pos, () -> {
  			Expression string = cast(value, String.class);
  			return switch (format) {
  				case ISO_8859_1 -> nullable ?
  					staticCall(BinaryOutputUtils.class, "writeIso88591Nullable", buf, pos, string) :
  					staticCall(BinaryOutputUtils.class, "writeIso88591", buf, pos, string);
  				case UTF8 -> nullable ?
  					staticCall(BinaryOutputUtils.class, "writeUTF8Nullable", buf, pos, string) :
  					staticCall(BinaryOutputUtils.class, "writeUTF8", buf, pos, string);
  				case UTF16 -> {
  					String LE = compatibilityLevel.isLittleEndian() ? "LE" : "";
  					yield nullable ?
  						staticCall(BinaryOutputUtils.class, "writeUTF16Nullable" + LE, buf, pos, string) :
  						staticCall(BinaryOutputUtils.class, "writeUTF16" + LE, buf, pos, string);
  				}
  			};
  		});
  	}
  
  	@Override
  	public Expression decode(StaticDecoders staticDecoders, Expression in, int version, CompatibilityLevel compatibilityLevel) {
  		return switch (format) {
  			case ISO_8859_1 -> nullable ?
  				call(in, "readIso88591Nullable") :
  				call(in, "readIso88591");
  			case UTF8 -> nullable ?
  				call(in, "readUTF8Nullable") :
  				call(in, "readUTF8");
  			case UTF16 -> {
  				String LE = compatibilityLevel.isLittleEndian() ? "LE" : "";
  				yield nullable ?
  					call(in, "readUTF16Nullable" + LE) :
  					call(in, "readUTF16" + LE);
  			}
  		};
  	}
  }
  