/**
* 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.JCompType.CCompType;
/**
* Code generator for "buffer" type.
*
* @author Milind Bhandarkar
*/
public class JBuffer extends JCompType {
class JavaBuffer extends JavaCompType {
JavaBuffer() {
super("org.apache.hadoop.record.Buffer", "Buffer", "org.apache.hadoop.record.Buffer");
}
void genCompareTo(CodeBuffer cb, String fname, String other) {
cb.append("ret = "+fname+".compareTo("+other+");\n");
}
void genEquals(CodeBuffer cb, String fname, String peer) {
cb.append("ret = "+fname+".equals("+peer+");\n");
}
void genHashCode(CodeBuffer cb, String fname) {
cb.append("ret = "+fname+".hashCode();\n");
}
void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
cb.append("{\n");
cb.append("int i = org.apache.hadoop.record.Utils.readVInt("+
b+", "+s+");\n");
cb.append("int z = org.apache.hadoop.record.Utils.getVIntSize(i);\n");
cb.append(s+" += z+i; "+l+" -= (z+i);\n");
cb.append("}\n");
}
void genCompareBytes(CodeBuffer cb) {
cb.append("{\n");
cb.append("int i1 = org.apache.hadoop.record.Utils.readVInt(b1, s1);\n");
cb.append("int i2 = org.apache.hadoop.record.Utils.readVInt(b2, s2);\n");
cb.append("int z1 = org.apache.hadoop.record.Utils.getVIntSize(i1);\n");
cb.append("int z2 = org.apache.hadoop.record.Utils.getVIntSize(i2);\n");
cb.append("s1+=z1; s2+=z2; l1-=z1; l2-=z2;\n");
cb.append("int r1 = org.apache.hadoop.record.Utils.compareBytes(b1,s1,i1,b2,s2,i2);\n");
cb.append("if (r1 != 0) { return (r1<0)?-1:0; }\n");
cb.append("s1+=i1; s2+=i2; l1-=i1; l1-=i2;\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";
}
}