JBuffer.java

/**
 * 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.commoncrawl.rpc.compiler;

import org.commoncrawl.rpc.compiler.JCompType.CCompType;

/**
 * Code generator for "buffer" type.
 */
public class JBuffer extends JCompType {
  
  class JavaBuffer extends JavaCompType {
    
    JavaBuffer() {
      super("FlexBuffer", "FlexBuffer", "org.commoncrawl.util.FlexBuffer");
    }
    
    @Override
    void genEquals(CodeBuffer cb, String fname, String peer) {
      cb.append("ret = "+fname+".equals("+peer+");\n");
    }
    
    @Override
    void genHashCode(CodeBuffer cb, String fname) {
      cb.append("result = MurmurHash.hash("+fname+".get()," + fname + ".getOffset()," + fname + ".getCount(),result);\n");
    }
    
    @Override
    void genClearMethod(CodeBuffer cb, String fname) { 
    	  cb.append(fname+".reset();\n");
    }
    
    @Override
    void genJSON(CodeBuffer cb, String fname) throws java.io.IOException {
      cb.append("if (" + fname + " == null || " + fname +".getCount() ==0) {\n");
      cb.append("  writer.name(\""+fname+"\").value(\"\");\n");
      cb.append("}\n");
      cb.append("else {\n");
      cb.append("  writer.name(\""+fname+"\").value("+fname+".toString());\n");
      cb.append("}\n");
    }
    
    @Override
    boolean isIntrinsicType() {
      return false;
    }
    
    void genGetSet(CodeBuffer cb, String fname,boolean trackDirtyFields) {
      cb.append("public ImmutableBuffer get"+toCamelCase(fname)+"() {\n");
      cb.append("return new ImmutableBuffer("+fname+");\n");
      cb.append("}\n");
      cb.append("public void set"+toCamelCase(fname)+"( "+getType()+" "+fname+") {\n");
      if (trackDirtyFields) { 
        cb.append("__validFields.set(Field_"+fname.toUpperCase()+");\n");
      }
      cb.append("this."+fname+"="+fname+";\n");
      cb.append("}\n");
      cb.append("public void set"+toCamelCase(fname)+"( Buffer "+fname+") {\n");
      if (trackDirtyFields) { 
        cb.append("__validFields.set(Field_"+fname.toUpperCase()+");\n");
      }
      cb.append("this."+fname+"= new FlexBuffer("+fname+".get(),0,"+fname+".getCount());\n");
      cb.append("}\n");
      
    }    
    
  }
  
  class CppBuffer extends CppCompType {
    
    CppBuffer() {
      super(" ::std::string");
    }

    void genGetSet(CodeBuffer cb, String fname) {
      cb.append("virtual const "+getType()+"& get"+toCamelCase(fname)+"() const {\n");
      cb.append("return "+fname+";\n");
      cb.append("}\n");
      cb.append("virtual "+getType()+"& get"+toCamelCase(fname)+"() {\n");
      cb.append("return "+fname+";\n");
      cb.append("}\n");
    }
  }
  /** Creates a new instance of JBuffer */
  public JBuffer() {
    setJavaType(new JavaBuffer());
    setCppType(new CppBuffer());
    setCType(new CCompType());
  }
  
  String getSignature() {
    return "B";
  }

  boolean isComparable() { 
	  return true;
  }        

}