/*
* Copyright (C) 2015 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.eclipse.handlers.singulars;
import static lombok.eclipse.handlers.EclipseHandlerUtil.makeIntLiteral;
import java.util.ArrayList;
import java.util.List;
import lombok.core.LombokImmutableList;
import lombok.eclipse.Eclipse;
import lombok.eclipse.EclipseNode;
import lombok.eclipse.handlers.EclipseSingularsRecipes.EclipseSingularizer;
import lombok.eclipse.handlers.EclipseSingularsRecipes.SingularData;
import org.eclipse.jdt.internal.compiler.ast.AllocationExpression;
import org.eclipse.jdt.internal.compiler.ast.Assignment;
import org.eclipse.jdt.internal.compiler.ast.BreakStatement;
import org.eclipse.jdt.internal.compiler.ast.CaseStatement;
import org.eclipse.jdt.internal.compiler.ast.Expression;
import org.eclipse.jdt.internal.compiler.ast.FieldReference;
import org.eclipse.jdt.internal.compiler.ast.LocalDeclaration;
import org.eclipse.jdt.internal.compiler.ast.MessageSend;
import org.eclipse.jdt.internal.compiler.ast.QualifiedNameReference;
import org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.SingleNameReference;
import org.eclipse.jdt.internal.compiler.ast.Statement;
import org.eclipse.jdt.internal.compiler.ast.SwitchStatement;
import org.eclipse.jdt.internal.compiler.ast.ThisReference;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.mangosdk.spi.ProviderFor;
@ProviderFor(EclipseSingularizer.class)
public class EclipseJavaUtilListSingularizer extends EclipseJavaUtilListSetSingularizer {
@Override public LombokImmutableList<String> getSupportedTypes() {
return LombokImmutableList.of("java.util.List", "java.util.Collection", "java.lang.Iterable");
}
@Override public void appendBuildCode(SingularData data, EclipseNode builderType, List<Statement> statements, char[] targetVariableName) {
if (useGuavaInstead(builderType)) {
guavaListSetSingularizer.appendBuildCode(data, builderType, statements, targetVariableName);
return;
}
List<Statement> switchContents = new ArrayList<Statement>();
/* case 0: (empty) break; */ {
switchContents.add(new CaseStatement(makeIntLiteral(new char[] {'0'}, null), 0, 0));
MessageSend invoke = new MessageSend();
invoke.receiver = new QualifiedNameReference(JAVA_UTIL_COLLECTIONS, NULL_POSS, 0, 0);
invoke.selector = "emptyList".toCharArray();
switchContents.add(new Assignment(new SingleNameReference(data.getPluralName(), 0), invoke, 0));
switchContents.add(new BreakStatement(null, 0, 0));
}
/* case 1: (singleton) break; */ {
switchContents.add(new CaseStatement(makeIntLiteral(new char[] {'1'}, null), 0, 0));
FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L);
thisDotField.receiver = new ThisReference(0, 0);
MessageSend thisDotFieldGet0 = new MessageSend();
thisDotFieldGet0.receiver = thisDotField;
thisDotFieldGet0.selector = new char[] {'g', 'e', 't'};
thisDotFieldGet0.arguments = new Expression[] {makeIntLiteral(new char[] {'0'}, null)};
Expression[] args = new Expression[] {thisDotFieldGet0};
MessageSend invoke = new MessageSend();
invoke.receiver = new QualifiedNameReference(JAVA_UTIL_COLLECTIONS, NULL_POSS, 0, 0);
invoke.selector = "singletonList".toCharArray();
invoke.arguments = args;
switchContents.add(new Assignment(new SingleNameReference(data.getPluralName(), 0), invoke, 0));
switchContents.add(new BreakStatement(null, 0, 0));
}
/* default: Create by passing builder field to constructor. */ {
switchContents.add(new CaseStatement(null, 0, 0));
Expression argToUnmodifiable;
/* new j.u.ArrayList<Generics>(this.pluralName); */ {
FieldReference thisDotPluralName = new FieldReference(data.getPluralName(), 0L);
thisDotPluralName.receiver = new ThisReference(0, 0);
TypeReference targetTypeExpr = new QualifiedTypeReference(JAVA_UTIL_ARRAYLIST, NULL_POSS);
targetTypeExpr = addTypeArgs(1, false, builderType, targetTypeExpr, data.getTypeArgs());
AllocationExpression constructorCall = new AllocationExpression();
constructorCall.type = targetTypeExpr;
constructorCall.arguments = new Expression[] {thisDotPluralName};
argToUnmodifiable = constructorCall;
}
/* pluralname = Collections.unmodifiableList(-newlist-); */ {
MessageSend unmodInvoke = new MessageSend();
unmodInvoke.receiver = new QualifiedNameReference(JAVA_UTIL_COLLECTIONS, NULL_POSS, 0, 0);
unmodInvoke.selector = "unmodifiableList".toCharArray();
unmodInvoke.arguments = new Expression[] {argToUnmodifiable};
switchContents.add(new Assignment(new SingleNameReference(data.getPluralName(), 0), unmodInvoke, 0));
}
}
SwitchStatement switchStat = new SwitchStatement();
switchStat.statements = switchContents.toArray(new Statement[switchContents.size()]);
switchStat.expression = getSize(builderType, data.getPluralName(), true);
TypeReference localShadowerType = new QualifiedTypeReference(Eclipse.fromQualifiedName(data.getTargetFqn()), NULL_POSS);
localShadowerType = addTypeArgs(1, false, builderType, localShadowerType, data.getTypeArgs());
LocalDeclaration varDefStat = new LocalDeclaration(data.getPluralName(), 0, 0);
varDefStat.type = localShadowerType;
statements.add(varDefStat);
statements.add(switchStat);
}
}