JLong.java
上传用户:quxuerui
上传日期:2018-01-08
资源大小:41811k
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 "long" type
- */
- public class JLong extends JType {
-
- class JavaLong extends JavaType {
-
- JavaLong() {
- super("long", "Long", "Long", "TypeID.RIOType.LONG");
- }
-
- String getTypeIDObjectString() {
- return "org.apache.hadoop.record.meta.TypeID.LongTypeID";
- }
- void genHashCode(CodeBuffer cb, String fname) {
- cb.append(Consts.RIO_PREFIX + "ret = (int) ("+fname+"^("+
- fname+">>>32));n");
- }
-
- void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
- cb.append("{n");
- cb.append("long i = org.apache.hadoop.record.Utils.readVLong("+b+", "+s+");n");
- cb.append("int z = org.apache.hadoop.record.Utils.getVIntSize(i);n");
- cb.append(s+"+=z; "+l+"-=z;n");
- cb.append("}n");
- }
-
- void genCompareBytes(CodeBuffer cb) {
- cb.append("{n");
- cb.append("long i1 = org.apache.hadoop.record.Utils.readVLong(b1, s1);n");
- cb.append("long i2 = org.apache.hadoop.record.Utils.readVLong(b2, s2);n");
- cb.append("if (i1 != i2) {n");
- cb.append("return ((i1-i2) < 0) ? -1 : 0;n");
- cb.append("}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("}n");
- }
- }
- class CppLong extends CppType {
-
- CppLong() {
- super("int64_t");
- }
-
- String getTypeIDObjectString() {
- return "new ::hadoop::TypeID(::hadoop::RIOTYPE_LONG)";
- }
- }
- /** Creates a new instance of JLong */
- public JLong() {
- setJavaType(new JavaLong());
- setCppType(new CppLong());
- setCType(new CType());
- }
-
- String getSignature() {
- return "l";
- }
- }