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VoltDB client interface libraries
/**
* 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.jute_voltpatches.compiler;
/**
*
*/
public class JVector extends JCompType {
static private int level = 0;
static private String getId(String id) {
return id + getLevel();
}
static private String getLevel() {
return Integer.toString(level);
}
static private void incrLevel() {
level++;
}
static private void decrLevel() {
level--;
}
private JType mElement;
/** Creates a new instance of JVector */
public JVector(JType t) {
super("struct " + extractVectorName(t), " ::std::vector<"
+ t.getCppType() + ">", "java.util.List<" + t.getJavaType()
+ ">", "Vector", "java.util.ArrayList<" + t.getJavaType() + ">");
mElement = t;
}
@Override
public String getSignature() {
return "[" + mElement.getSignature() + "]";
}
@Override
public String genJavaCompareTo(String fname) {
return " throw new UnsupportedOperationException(\"comparing "
+ fname + " is unimplemented\");\n";
}
@Override
public String genJavaReadWrapper(String fname, String tag, boolean decl) {
StringBuilder ret = new StringBuilder("");
if (decl) {
ret.append(" java.util.List " + fname + ";\n");
}
ret.append(" {\n");
incrLevel();
ret.append(" Index " + getId("vidx") + " = a_.startVector(\""
+ tag + "\");\n");
ret.append(" if (" + getId("vidx") + "!= null) {");
ret.append(" " + fname + "=new java.util.ArrayList<"
+ mElement.getJavaType() + ">();\n");
ret.append(" for (; !" + getId("vidx") + ".done(); "
+ getId("vidx") + ".incr()) {\n");
ret.append(mElement.genJavaReadWrapper(getId("e"), getId("e"), true));
ret.append(" " + fname + ".add(" + getId("e") + ");\n");
ret.append(" }\n");
ret.append(" }\n");
ret.append(" a_.endVector(\"" + tag + "\");\n");
decrLevel();
ret.append(" }\n");
return ret.toString();
}
@Override
public String genJavaReadMethod(String fname, String tag) {
return genJavaReadWrapper(fname, tag, false);
}
@Override
public String genJavaWriteWrapper(String fname, String tag) {
StringBuilder ret = new StringBuilder(" {\n");
incrLevel();
ret.append(" a_.startVector(" + fname + ",\"" + tag + "\");\n");
ret.append(" if (" + fname + "!= null) {");
ret.append(" int " + getId("len") + " = " + fname
+ ".size();\n");
ret.append(" for(int " + getId("vidx") + " = 0; "
+ getId("vidx") + "<" + getId("len") + "; " + getId("vidx")
+ "++) {\n");
ret.append(" " + mElement.getJavaWrapperType() + " "
+ getId("e") + " = (" + mElement.getJavaWrapperType() + ") "
+ fname + ".get(" + getId("vidx") + ");\n");
ret.append(mElement.genJavaWriteWrapper(getId("e"), getId("e")));
ret.append(" }\n");
ret.append(" }\n");
ret.append(" a_.endVector(" + fname + ",\"" + tag + "\");\n");
ret.append(" }\n");
decrLevel();
return ret.toString();
}
@Override
public String genJavaWriteMethod(String fname, String tag) {
return genJavaWriteWrapper(fname, tag);
}
public JType getElementType() {
return mElement;
}
static public String extractVectorName(JType jvType) {
return JRecord.extractMethodSuffix(jvType) + "_vector";
}
}