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/*
* Copyright (C) 2013 The Dagger Authors.
*
* 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 dagger.internal.codegen.base;
import static androidx.room.compiler.processing.XElementKt.isField;
import static androidx.room.compiler.processing.XElementKt.isMethodParameter;
import static androidx.room.compiler.processing.XElementKt.isTypeElement;
import static dagger.internal.codegen.xprocessing.XElements.asExecutable;
import static dagger.internal.codegen.xprocessing.XElements.asMethodParameter;
import static dagger.internal.codegen.xprocessing.XElements.asTypeElement;
import static dagger.internal.codegen.xprocessing.XElements.getSimpleName;
import static dagger.internal.codegen.xprocessing.XElements.isExecutable;
import static java.util.stream.Collectors.joining;
import androidx.room.compiler.processing.XElement;
import androidx.room.compiler.processing.XExecutableElement;
import dagger.internal.codegen.xprocessing.XTypes;
import javax.inject.Inject;
/**
* Formats elements into a useful string representation.
*
* <p>Elements directly enclosed by a type are preceded by the enclosing type's qualified name.
*
* <p>If the element is a parameter, the returned string will include the enclosing executable,
* with other parameters elided.
*/
public final class ElementFormatter extends Formatter<XElement> {
@Inject
ElementFormatter() {}
@Override
public String format(XElement element) {
return elementToString(element);
}
/**
* Returns a useful string form for an element.
*
* <p>Elements directly enclosed by a type are preceded by the enclosing type's qualified name.
*
* <p>If the element is a parameter, the returned string will include the enclosing executable,
* with other parameters elided.
*/
public static String elementToString(XElement element) {
return elementToString(element, /* elideMethodParameterTypes= */ false);
}
/**
* Returns a useful string form for an element.
*
* <p>Elements directly enclosed by a type are preceded by the enclosing type's qualified name.
*
* <p>Parameters are given with their enclosing executable, with other parameters elided.
*/
public static String elementToString(XElement element, boolean elideMethodParameterTypes) {
if (isExecutable(element)) {
return enclosingTypeAndMemberName(element)
.append(
elideMethodParameterTypes
? (asExecutable(element).getParameters().isEmpty() ? "()" : "(…)")
: asExecutable(element).getParameters().stream()
.map(parameter -> XTypes.toStableString(parameter.getType()))
.collect(joining(", ", "(", ")")))
.toString();
} else if (isMethodParameter(element)) {
XExecutableElement methodOrConstructor = asMethodParameter(element).getEnclosingElement();
return enclosingTypeAndMemberName(methodOrConstructor)
.append('(')
.append(
formatArgumentInList(
methodOrConstructor.getParameters().indexOf(element),
methodOrConstructor.getParameters().size(),
getSimpleName(element)))
.append(')')
.toString();
} else if (isField(element)) {
return enclosingTypeAndMemberName(element).toString();
} else if (isTypeElement(element)) {
return asTypeElement(element).getQualifiedName();
}
throw new UnsupportedOperationException("Can't determine string for element " + element);
}
private static StringBuilder enclosingTypeAndMemberName(XElement element) {
StringBuilder name = new StringBuilder(elementToString(element.getEnclosingElement()));
if (!getSimpleName(element).contentEquals("<init>")) {
name.append('.').append(getSimpleName(element));
}
return name;
}
}
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