100 lines
3.8 KiB
Java
100 lines
3.8 KiB
Java
/*
|
|
* Copyright (C) 2021 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.bindinggraphvalidation;
|
|
|
|
import static dagger.spi.model.BindingKind.DELEGATE;
|
|
import static dagger.spi.model.BindingKind.MULTIBOUND_SET;
|
|
import static javax.tools.Diagnostic.Kind.ERROR;
|
|
|
|
import com.google.common.base.Joiner;
|
|
import com.google.common.collect.HashMultimap;
|
|
import com.google.common.collect.ImmutableSet;
|
|
import com.google.common.collect.Iterables;
|
|
import com.google.common.collect.Multimap;
|
|
import dagger.spi.model.Binding;
|
|
import dagger.spi.model.BindingGraph;
|
|
import dagger.spi.model.BindingGraphPlugin;
|
|
import dagger.spi.model.DiagnosticReporter;
|
|
import dagger.spi.model.Key;
|
|
import javax.inject.Inject;
|
|
|
|
/** Validates that there are not multiple set binding contributions to the same binding. */
|
|
final class SetMultibindingValidator implements BindingGraphPlugin {
|
|
|
|
@Inject
|
|
SetMultibindingValidator() {
|
|
}
|
|
|
|
@Override
|
|
public String pluginName() {
|
|
return "Dagger/SetMultibinding";
|
|
}
|
|
|
|
@Override
|
|
public void visitGraph(BindingGraph bindingGraph, DiagnosticReporter diagnosticReporter) {
|
|
bindingGraph.bindings().stream()
|
|
.filter(binding -> binding.kind().equals(MULTIBOUND_SET))
|
|
.forEach(
|
|
binding ->
|
|
checkForDuplicateSetContributions(binding, bindingGraph, diagnosticReporter));
|
|
}
|
|
|
|
private void checkForDuplicateSetContributions(
|
|
Binding binding, BindingGraph bindingGraph, DiagnosticReporter diagnosticReporter) {
|
|
// Map of delegate target key to the original contribution binding
|
|
Multimap<Key, Binding> dereferencedBindsTargets = HashMultimap.create();
|
|
for (Binding dep : bindingGraph.requestedBindings(binding)) {
|
|
if (dep.kind().equals(DELEGATE)) {
|
|
dereferencedBindsTargets.put(dereferenceDelegateBinding(dep, bindingGraph), dep);
|
|
}
|
|
}
|
|
|
|
dereferencedBindsTargets
|
|
.asMap()
|
|
.forEach(
|
|
(targetKey, contributions) -> {
|
|
if (contributions.size() > 1) {
|
|
diagnosticReporter.reportComponent(
|
|
ERROR,
|
|
bindingGraph.componentNode(binding.componentPath()).get(),
|
|
"Multiple set contributions into %s for the same contribution key: %s.\n\n"
|
|
+ " %s\n",
|
|
binding.key(),
|
|
targetKey,
|
|
Joiner.on("\n ").join(contributions));
|
|
}
|
|
});
|
|
}
|
|
|
|
/** Returns the delegate target of a delegate binding (going through other delegates as well). */
|
|
private Key dereferenceDelegateBinding(Binding binding, BindingGraph bindingGraph) {
|
|
ImmutableSet<Binding> delegateSet = bindingGraph.requestedBindings(binding);
|
|
if (delegateSet.isEmpty()) {
|
|
// There may not be a delegate if the delegate is missing. In this case, we just take the
|
|
// requested key and return that.
|
|
return Iterables.getOnlyElement(binding.dependencies()).key();
|
|
}
|
|
// If there is a binding, first we check if that is a delegate binding so we can dereference
|
|
// that binding if needed.
|
|
Binding delegate = Iterables.getOnlyElement(delegateSet);
|
|
if (delegate.kind().equals(DELEGATE)) {
|
|
return dereferenceDelegateBinding(delegate, bindingGraph);
|
|
}
|
|
return delegate.key();
|
|
}
|
|
}
|