Package org.apache.hadoop.record.compiler

Source Code of org.apache.hadoop.record.compiler.JByte$JavaByte

/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you 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 org.apache.hadoop.record.compiler;

import org.apache.hadoop.record.compiler.JType.CType;
import org.apache.hadoop.record.compiler.JType.CppType;

/**
* Code generator for "byte" type.
*/
public class JByte extends JType {
 
  class JavaByte extends JavaType {
   
    JavaByte() {
      super("byte", "Byte", "Byte");
    }
   
    void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
      cb.append("{\n");
      cb.append("if ("+l+"<1) {\n");
      cb.append("throw new java.io.IOException(\"Byte is exactly 1 byte."+
                " Provided buffer is smaller.\");\n");
      cb.append("}\n");
      cb.append(s+"++; "+l+"--;\n");
      cb.append("}\n");
    }
   
    void genCompareBytes(CodeBuffer cb) {
      cb.append("{\n");
      cb.append("if (l1<1 || l2<1) {\n");
      cb.append("throw new java.io.IOException(\"Byte is exactly 1 byte."+
                " Provided buffer is smaller.\");\n");
      cb.append("}\n");
      cb.append("if (b1[s1] != b2[s2]) {\n");
      cb.append("return (b1[s1]<b2[s2])?-1:0;\n");
      cb.append("}\n");
      cb.append("s1++; s2++; l1--; l2--;\n");
      cb.append("}\n");
    }
  }
 
  public JByte() {
    setJavaType(new JavaByte());
    setCppType(new CppType("int8_t"));
    setCType(new CType());
  }
 
  String getSignature() {
    return "b";
  }
}
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