JByte.java
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上传日期:2018-01-08
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文件大小:2k
- /**
- * 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 "byte" type.
- */
- public class JByte extends JType {
-
- class JavaByte extends JavaType {
-
- JavaByte() {
- super("byte", "Byte", "Byte", "TypeID.RIOType.BYTE");
- }
-
- String getTypeIDObjectString() {
- return "org.apache.hadoop.record.meta.TypeID.ByteTypeID";
- }
- 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");
- }
- }
-
- class CppByte extends CppType {
-
- CppByte() {
- super("int8_t");
- }
-
- String getTypeIDObjectString() {
- return "new ::hadoop::TypeID(::hadoop::RIOTYPE_BYTE)";
- }
- }
- public JByte() {
- setJavaType(new JavaByte());
- setCppType(new CppByte());
- setCType(new CType());
- }
-
- String getSignature() {
- return "b";
- }
- }