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/*
* Copyright 2001-present Stephen Colebourne
*
* Licensed 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.joda.beans.gen;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* A generator of copy code.
*
* @author Stephen Colebourne
*/
abstract class CopyGen {
static final CopyGen ASSIGN = new PatternCopyGen("$field = $value;");
static final CopyGen CLONE = new PatternCopyGen("$value.clone()");
static final CopyGen CLONE_CAST = new PatternCopyGen("($type) $value.clone()");
/**
* Generates the copy to immutable lines.
*
* @param indent the indent to use, not null
* @param fromBean the source code for the bean to copy from, not null
* @param prop the property data, not null
* @return the generated code, not null
*/
abstract List generateCopyToImmutable(String indent, String fromBean, PropertyData prop);
/**
* Generates the copy to mutable lines.
*
* @param indent the indent to use, not null
* @param prop the property data, not null
* @param beanToCopyFrom the variable name of the bean, not null
* @return the generated code, not null
*/
abstract List generateCopyToMutable(String indent, PropertyData prop, String beanToCopyFrom);
//-----------------------------------------------------------------------
static class PatternCopyGen extends CopyGen {
private final String immutablePattern;
private final String mutablePattern;
PatternCopyGen(String pattern) {
this.immutablePattern = pattern;
this.mutablePattern = pattern;
}
PatternCopyGen(String immutablePattern, String mutablePattern) {
this.immutablePattern = immutablePattern;
this.mutablePattern = mutablePattern;
}
@Override
List generateCopyToImmutable(String indent, String fromBean, PropertyData prop) {
List list = new ArrayList<>();
final String[] split = immutablePattern.split("\n");
for (String line : split) {
if (split.length == 1) {
if (line.startsWith("$field = ") == false && line.endsWith(";") == false) {
if (prop.isNotNull()) {
line = "$field = " + line + ";";
} else {
line = "$field = ($value != null ? " + line + " : null);";
}
}
if (line.startsWith("$field = ") == false) {
line = "$field = " + line;
}
}
line = line.replace("$field", "this." + prop.getFieldName());
line = line.replace("$value", fromBean + (fromBean.isEmpty() ? prop.getPropertyName() : prop.getFieldName()));
line = line.replace("$type", prop.getFieldType());
line = line.replace("$typeRaw", prop.getTypeRaw());
line = line.replace("$generics", prop.getTypeGenerics());
list.add(indent + line);
}
return list;
}
@Override
List generateCopyToMutable(String indent, PropertyData prop, String beanToCopyFrom) {
List list = new ArrayList<>();
final String[] split = mutablePattern.split("\n");
for (String line : split) {
if (split.length == 1) {
if (line.startsWith("$field = ") == false && line.endsWith(";") == false) {
if (prop.isNotNull()) {
line = "$field = " + line + ";";
} else {
if (line.equals("$value")) {
line = "$field = $value;";
} else {
line = "$field = ($value != null ? " + line + " : null);";
}
}
}
if (line.startsWith("$field = ") == false) {
line = "$field = " + line;
}
}
line = line.replace("$field", "this." + prop.getFieldName());
line = line.replace("$value", beanToCopyFrom + "." + prop.getGetterGen().generateGetInvoke(prop));
line = line.replace("$type", prop.getFieldType());
line = line.replace("$typeRaw", prop.getTypeRaw());
line = line.replace("$generics", prop.getTypeGenerics());
list.add(indent + line);
}
return list;
}
}
static class NoCopyGen extends CopyGen {
static final CopyGen INSTANCE = new NoCopyGen();
@Override
List generateCopyToImmutable(String indent, String fromBean, PropertyData prop) {
return Collections.emptyList();
}
@Override
List generateCopyToMutable(String indent, PropertyData prop, String beanToCopyFrom) {
return Collections.emptyList();
}
}
}
