JBuffer.java
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上传日期:2018-01-08
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文件大小:3k
- /**
- * 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;
- /**
- * Code generator for "buffer" type.
- */
- public class JBuffer extends JCompType {
-
- class JavaBuffer extends JavaCompType {
-
- JavaBuffer() {
- super("org.apache.hadoop.record.Buffer", "Buffer",
- "org.apache.hadoop.record.Buffer", "TypeID.RIOType.BUFFER");
- }
-
- String getTypeIDObjectString() {
- return "org.apache.hadoop.record.meta.TypeID.BufferTypeID";
- }
- void genCompareTo(CodeBuffer cb, String fname, String other) {
- cb.append(Consts.RIO_PREFIX + "ret = "+fname+".compareTo("+other+");n");
- }
-
- void genEquals(CodeBuffer cb, String fname, String peer) {
- cb.append(Consts.RIO_PREFIX + "ret = "+fname+".equals("+peer+");n");
- }
-
- void genHashCode(CodeBuffer cb, String fname) {
- cb.append(Consts.RIO_PREFIX + "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");
- }
-
- String getTypeIDObjectString() {
- return "new ::hadoop::TypeID(::hadoop::RIOTYPE_BUFFER)";
- }
- }
- /** Creates a new instance of JBuffer */
- public JBuffer() {
- setJavaType(new JavaBuffer());
- setCppType(new CppBuffer());
- setCType(new CCompType());
- }
-
- String getSignature() {
- return "B";
- }
- }