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611 lines
30 KiB
Java
611 lines
30 KiB
Java
/*
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* Copyright 2000-2009 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.intellij.codeInsight.completion;
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import com.intellij.codeInsight.*;
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import com.intellij.codeInsight.ExceptionUtil;
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import com.intellij.codeInsight.lookup.*;
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import com.intellij.openapi.util.Condition;
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import com.intellij.openapi.util.Key;
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import com.intellij.openapi.util.Pair;
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import com.intellij.patterns.ElementPattern;
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import com.intellij.patterns.PsiJavaPatterns;
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import com.intellij.psi.*;
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import com.intellij.psi.filters.ElementExtractorFilter;
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import com.intellij.psi.filters.ElementFilter;
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import com.intellij.psi.filters.GeneratorFilter;
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import com.intellij.psi.filters.OrFilter;
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import com.intellij.psi.filters.getters.CastTypeGetter;
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import com.intellij.psi.filters.getters.ExpectedTypesGetter;
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import com.intellij.psi.filters.getters.InstanceOfLeftPartTypeGetter;
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import com.intellij.psi.filters.getters.ThrowsListGetter;
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import com.intellij.psi.filters.types.AssignableFromFilter;
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import com.intellij.psi.filters.types.AssignableGroupFilter;
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import com.intellij.psi.filters.types.AssignableToFilter;
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import com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference;
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import com.intellij.psi.infos.CandidateInfo;
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import com.intellij.psi.javadoc.PsiDocTag;
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import com.intellij.psi.statistics.JavaStatisticsManager;
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import com.intellij.psi.statistics.StatisticsInfo;
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import com.intellij.psi.statistics.StatisticsManager;
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import com.intellij.psi.util.InheritanceUtil;
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import com.intellij.psi.util.PsiTreeUtil;
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import com.intellij.psi.util.PsiUtil;
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import com.intellij.psi.util.TypeConversionUtil;
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import com.intellij.util.*;
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import com.intellij.util.containers.ContainerUtil;
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import gnu.trove.THashSet;
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import gnu.trove.TObjectHashingStrategy;
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import org.jetbrains.annotations.NonNls;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import java.util.*;
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import static com.intellij.patterns.PlatformPatterns.psiElement;
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import static com.intellij.patterns.PsiJavaPatterns.psiMethod;
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import static com.intellij.patterns.StandardPatterns.*;
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/**
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* @author peter
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*/
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public class JavaSmartCompletionContributor extends CompletionContributor {
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private static final TObjectHashingStrategy<ExpectedTypeInfo> EXPECTED_TYPE_INFO_STRATEGY = new TObjectHashingStrategy<ExpectedTypeInfo>() {
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public int computeHashCode(final ExpectedTypeInfo object) {
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return object.getType().hashCode();
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}
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public boolean equals(final ExpectedTypeInfo o1, final ExpectedTypeInfo o2) {
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return o1.getType().equals(o2.getType());
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}
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};
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private static final ElementExtractorFilter THROWABLES_FILTER = new ElementExtractorFilter(new AssignableFromFilter(CommonClassNames.JAVA_LANG_THROWABLE));
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@NonNls private static final String EXCEPTION_TAG = "exception";
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static final ElementPattern<PsiElement> AFTER_NEW =
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psiElement().afterLeaf(
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psiElement().withText(PsiKeyword.NEW).andNot(
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psiElement().afterLeaf(
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psiElement().withText(PsiKeyword.THROW))));
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static final ElementPattern<PsiElement> AFTER_THROW_NEW =
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psiElement().afterLeaf(
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psiElement().withText(PsiKeyword.NEW).afterLeaf(
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psiElement().withText(PsiKeyword.THROW)));
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private static final OrFilter THROWABLE_TYPE_FILTER = new OrFilter(
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new GeneratorFilter(AssignableGroupFilter.class, new ThrowsListGetter()),
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new AssignableFromFilter("java.lang.RuntimeException"));
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public static final ElementPattern<PsiElement> INSIDE_EXPRESSION = or(
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psiElement().withParent(PsiExpression.class).andNot(psiElement().withParent(PsiLiteralExpression.class)),
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psiElement().inside(PsiClassObjectAccessExpression.class),
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psiElement().inside(PsiThisExpression.class),
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psiElement().inside(PsiSuperExpression.class)
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);
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static final ElementPattern<PsiElement> INSIDE_TYPECAST_EXPRESSION = psiElement().withParent(
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psiElement(PsiReferenceExpression.class).afterLeaf(
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psiElement().withText(")").withParent(PsiTypeCastExpression.class)));
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@Nullable
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private static ElementFilter getReferenceFilter(PsiElement element) {
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//throw new foo
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if (AFTER_THROW_NEW.accepts(element)) {
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return new ElementExtractorFilter(THROWABLE_TYPE_FILTER);
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}
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//new xxx.yyy
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if (psiElement().afterLeaf(psiElement().withText(".")).withSuperParent(2, psiElement(PsiNewExpression.class)).accepts(element)) {
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if (((PsiNewExpression)element.getParent().getParent()).getClassReference() == element.getParent()) {
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return new GeneratorFilter(AssignableGroupFilter.class, new ExpectedTypesGetter());
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}
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}
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return null;
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}
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public JavaSmartCompletionContributor() {
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extend(CompletionType.SMART, SmartCastProvider.INSIDE_TYPECAST_TYPE, new SmartCastProvider());
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extend(CompletionType.SMART,
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psiElement().beforeLeaf(psiElement(JavaTokenType.RPARENTH)).afterLeaf("(").withParent(
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psiElement(PsiReferenceExpression.class).withParent(
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psiElement(PsiExpressionList.class).withParent(PsiMethodCallExpression.class))), new SameSignatureCallParametersProvider());
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extend(CompletionType.SMART, psiElement().afterLeaf(PsiKeyword.INSTANCEOF), new CompletionProvider<CompletionParameters>(false) {
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protected void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext context, @NotNull final CompletionResultSet result) {
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final PsiElement position = parameters.getPosition();
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final PsiType[] leftTypes = InstanceOfLeftPartTypeGetter.getLeftTypes(position);
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final Set<PsiClassType> expectedClassTypes = new LinkedHashSet<PsiClassType>();
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final Set<PsiClass> parameterizedTypes = new THashSet<PsiClass>();
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for (final PsiType type : leftTypes) {
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if (type instanceof PsiClassType) {
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final PsiClassType classType = (PsiClassType)type;
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if (!classType.isRaw()) {
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ContainerUtil.addIfNotNull(classType.resolve(), parameterizedTypes);
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}
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expectedClassTypes.add(classType.rawType());
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}
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}
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processInheritors(parameters, position, position.getContainingFile(), expectedClassTypes, new Consumer<PsiType>() {
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public void consume(PsiType type) {
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final PsiClass psiClass = PsiUtil.resolveClassInType(type);
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if (psiClass == null) return;
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if (expectedClassTypes.contains(type)) return;
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result.addElement(createInstanceofLookupElement(psiClass, parameterizedTypes));
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}
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}, result.getPrefixMatcher());
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}
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});
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extend(CompletionType.SMART, psiElement(), new CompletionProvider<CompletionParameters>() {
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protected void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext context, @NotNull final CompletionResultSet result) {
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final PsiElement element = parameters.getPosition();
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final PsiReference reference = element.getContainingFile().findReferenceAt(parameters.getOffset());
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if (reference != null) {
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final ElementFilter filter = getReferenceFilter(element);
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if (filter != null) {
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final List<ExpectedTypeInfo> infos = Arrays.asList(getExpectedTypes(parameters));
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for (final LookupElement item : completeReference(element, reference, filter, true, parameters)) {
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if (item.getObject() instanceof PsiClass) {
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result.addElement(decorate(LookupElementDecorator.withInsertHandler((LookupItem)item, ConstructorInsertHandler.INSTANCE), infos));
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}
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}
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}
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else if (INSIDE_TYPECAST_EXPRESSION.accepts(element)) {
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for (final LookupElement item : completeReference(element, reference, new GeneratorFilter(AssignableToFilter.class, new CastTypeGetter()), false, parameters)) {
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result.addElement(item);
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}
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}
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}
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}
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});
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//method throws clause
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extend(CompletionType.SMART, psiElement().inside(
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psiElement(PsiReferenceList.class).save("refList").withParent(
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psiMethod().withThrowsList(get("refList")))), new CompletionProvider<CompletionParameters>() {
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@Override
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protected void addCompletions(@NotNull CompletionParameters parameters,
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ProcessingContext context,
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@NotNull CompletionResultSet result) {
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final PsiElement element = parameters.getPosition();
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final PsiReference reference = element.getContainingFile().findReferenceAt(parameters.getOffset());
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assert reference != null;
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for (final LookupElement item : completeReference(element, reference, THROWABLES_FILTER, true, parameters)) {
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result.addElement(item);
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}
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}
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});
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extend(CompletionType.SMART, INSIDE_EXPRESSION, new ExpectedTypeBasedCompletionProvider() {
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protected void addCompletions(final CompletionParameters params, final CompletionResultSet result, final Collection<ExpectedTypeInfo> _infos) {
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for (final ExpectedTypeInfo info : new THashSet<ExpectedTypeInfo>(_infos, EXPECTED_TYPE_INFO_STRATEGY)) {
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final JavaSmartCompletionParameters parameters = new JavaSmartCompletionParameters(params, info);
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final PsiType type = info.getType();
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final CompletionService service = CompletionService.getCompletionService();
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new BasicExpressionCompletionContributor().fillCompletionVariants(parameters, service.createResultSet(parameters, new Consumer<LookupElement>() {
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public void consume(final LookupElement lookupElement) {
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final TypedLookupItem typed = JavaCompletionUtil.typedFrom(lookupElement);
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if (typed != null) {
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final PsiType psiType = typed.getType();
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if (psiType != null && type.isAssignableFrom(psiType)) {
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result.addElement(decorate(lookupElement, _infos));
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}
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}
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}
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}, JavaSmartCompletionContributor.this));
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ReferenceExpressionCompletionContributor.fillCompletionVariants(parameters, service.createResultSet(parameters, new Consumer<LookupElement>() {
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public void consume(final LookupElement lookupElement) {
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result.addElement(decorate(lookupElement, _infos));
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}
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}, JavaSmartCompletionContributor.this));
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}
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}
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});
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extend(CompletionType.SMART, or(
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PsiJavaPatterns.psiElement().withParent(PsiNameValuePair.class),
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PsiJavaPatterns.psiElement().withSuperParent(2, PsiNameValuePair.class)), new CompletionProvider<CompletionParameters>() {
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public void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext context, @NotNull final CompletionResultSet result) {
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final PsiElement element = parameters.getPosition();
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final ElementPattern<? extends PsiElement> leftNeighbor = PsiJavaPatterns.psiElement().afterLeaf(PsiJavaPatterns.psiElement().withText("."));
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final boolean needQualify = leftNeighbor.accepts(element);
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for (final PsiType type : ExpectedTypesGetter.getExpectedTypes(element, false)) {
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final PsiClass psiClass = PsiUtil.resolveClassInType(type);
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if (psiClass != null && psiClass.isAnnotationType()) {
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final LookupItem item = new JavaPsiClassReferenceElement(psiClass).setTailType(TailType.NONE);
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if (needQualify) JavaCompletionUtil.qualify(item);
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result.addElement(item);
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}
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}
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}
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});
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extend(CompletionType.SMART, psiElement().inside(
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psiElement(PsiDocTag.class).withName(
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string().oneOf(PsiKeyword.THROWS, EXCEPTION_TAG))), new CompletionProvider<CompletionParameters>() {
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public void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext context, @NotNull final CompletionResultSet result) {
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final PsiElement element = parameters.getPosition();
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final Set<PsiClass> throwsSet = new HashSet<PsiClass>();
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final PsiMethod method = PsiTreeUtil.getContextOfType(element, PsiMethod.class, true);
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if(method != null){
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for (PsiClassType ref : method.getThrowsList().getReferencedTypes()) {
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final PsiClass exception = ref.resolve();
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if (exception != null && throwsSet.add(exception)) {
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result.addElement(TailTypeDecorator.withTail(new JavaPsiClassReferenceElement(exception).setInsertHandler(new DefaultInsertHandler()), TailType.SPACE));
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}
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}
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}
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}
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});
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final Key<PsiTryStatement> tryKey = Key.create("try");
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extend(CompletionType.SMART, psiElement().afterLeaf(
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psiElement().withText("("))
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.withSuperParent(3, psiElement(PsiCatchSection.class).withParent(
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psiElement(PsiTryStatement.class).save(tryKey))), new CompletionProvider<CompletionParameters>() {
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protected void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext context, @NotNull final CompletionResultSet result) {
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final PsiCodeBlock tryBlock = context.get(tryKey).getTryBlock();
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if (tryBlock == null) return;
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for (final PsiClassType type : ExceptionUtil.getThrownExceptions(tryBlock.getStatements())) {
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result.addElement(TailTypeDecorator.withTail(PsiTypeLookupItem.createLookupItem(type, tryBlock).setInsertHandler(new DefaultInsertHandler()), TailType.SPACE));
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}
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}
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});
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extend(CompletionType.SMART, psiElement().inside(psiElement(PsiReferenceParameterList.class)),
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new CompletionProvider<CompletionParameters>() {
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protected void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext processingContext, @NotNull final CompletionResultSet resultSet) {
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final PsiElement context = parameters.getPosition();
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final Pair<PsiClass, Integer> pair = getTypeParameterInfo(context);
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if (pair == null) return;
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final PsiClass referencedClass = pair.first;
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final int parameterIndex = pair.second.intValue();
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final PsiTypeParameter[] typeParameters = referencedClass.getTypeParameters();
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final PsiTypeParameter targetParameter = typeParameters[parameterIndex];
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boolean isLast = parameterIndex == typeParameters.length - 1;
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final TailType tail = isLast ? new CharTailType('>') : TailType.COMMA;
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PsiResolveHelper resolveHelper = JavaPsiFacade.getInstance(context.getProject()).getResolveHelper();
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final PsiType[] psiTypes = ExpectedTypesGetter.getExpectedTypes(context, false);
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if (psiTypes.length > 0) {
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for (PsiType type : psiTypes) {
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if (!(type instanceof PsiClassType)) continue;
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final PsiClassType.ClassResolveResult result = ((PsiClassType)type).resolveGenerics();
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final PsiClass typeClass = result.getElement();
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final PsiSubstitutor substitutor = result.getSubstitutor();
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if (!InheritanceUtil.isInheritorOrSelf(referencedClass, typeClass, true)) continue;
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final PsiSubstitutor currentSubstitutor =
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TypeConversionUtil.getClassSubstitutor(typeClass, referencedClass, PsiSubstitutor.EMPTY);
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for (PsiTypeParameter parameter : PsiUtil.typeParametersIterable(typeClass)) {
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final PsiType argSubstitution = substitutor.substitute(parameter);
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final PsiType paramSubstitution = currentSubstitutor.substitute(parameter);
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final PsiType substitution = resolveHelper
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.getSubstitutionForTypeParameter(targetParameter, paramSubstitution, argSubstitution, false,
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PsiUtil.getLanguageLevel(context));
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if (substitution != null && substitution != PsiType.NULL) {
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final LookupItem item = PsiTypeLookupItem.createLookupItem(substitution, context);
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resultSet.addElement(TailTypeDecorator.withTail(item.setInsertHandler(new DefaultInsertHandler()), tail));
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}
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}
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}
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} else {
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final List<PsiClassType> typeList = Collections.singletonList((PsiClassType)TypeConversionUtil.typeParameterErasure(targetParameter));
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processInheritors(parameters, context, parameters.getOriginalFile(), typeList, new Consumer<PsiType>() {
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public void consume(final PsiType type) {
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final PsiClass psiClass = PsiUtil.resolveClassInType(type);
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if (psiClass == null) return;
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resultSet.addElement(TailTypeDecorator.withTail(new JavaPsiClassReferenceElement(psiClass).setInsertHandler(new DefaultInsertHandler()), tail));
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}
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}, resultSet.getPrefixMatcher());
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}
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}
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});
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extend(CompletionType.SMART, AFTER_NEW, new CompletionProvider<CompletionParameters>(false) {
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public void addCompletions(@NotNull final CompletionParameters parameters, final ProcessingContext matchingContext, @NotNull final CompletionResultSet result) {
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final PsiElement identifierCopy = parameters.getPosition();
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final PsiFile file = parameters.getOriginalFile();
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final List<PsiClassType> expectedClassTypes = new SmartList<PsiClassType>();
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final List<PsiArrayType> expectedArrayTypes = new SmartList<PsiArrayType>();
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final List<ExpectedTypeInfo> infos = new SmartList<ExpectedTypeInfo>();
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ContainerUtil.addAll(infos, getExpectedTypes(parameters));
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for (PsiType type : ExpectedTypesGetter.getExpectedTypes(identifierCopy, true)) {
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if (type instanceof PsiClassType) {
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final PsiClassType classType = (PsiClassType)type;
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if (classType.resolve() != null) {
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expectedClassTypes.add(classType);
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}
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}
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else if (type instanceof PsiArrayType) {
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expectedArrayTypes.add((PsiArrayType)type);
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}
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}
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for (final PsiArrayType type : expectedArrayTypes) {
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final LookupItem item = PsiTypeLookupItem.createLookupItem(JavaCompletionUtil.eliminateWildcards(type), identifierCopy);
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if (item.getObject() instanceof PsiClass) {
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JavaCompletionUtil.setShowFQN(item);
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}
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item.setInsertHandler(new DefaultInsertHandler()); //braces & shortening
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result.addElement(decorate(item, infos));
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}
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processInheritors(parameters, identifierCopy, file, expectedClassTypes, new Consumer<PsiType>() {
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public void consume(final PsiType type) {
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addExpectedType(result, type, parameters, infos);
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}
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}, result.getPrefixMatcher());
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}
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});
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}
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public static SmartCompletionDecorator decorate(LookupElement lookupElement, Collection<ExpectedTypeInfo> infos) {
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if (lookupElement instanceof LookupItem) {
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final LookupItem lookupItem = (LookupItem)lookupElement;
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if (lookupItem.getInsertHandler() == null) {
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lookupItem.setInsertHandler(DefaultInsertHandler.NO_TAIL_HANDLER);
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}
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}
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return new SmartCompletionDecorator(lookupElement, infos);
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}
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private static LookupElement createInstanceofLookupElement(PsiClass psiClass, Set<PsiClass> toWildcardInheritors) {
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final PsiTypeParameter[] typeParameters = psiClass.getTypeParameters();
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if (typeParameters.length > 0) {
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for (final PsiClass parameterizedType : toWildcardInheritors) {
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if (psiClass.isInheritor(parameterizedType, true)) {
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PsiSubstitutor substitutor = PsiSubstitutor.EMPTY;
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final PsiWildcardType wildcard = PsiWildcardType.createUnbounded(psiClass.getManager());
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for (final PsiTypeParameter typeParameter : typeParameters) {
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substitutor = substitutor.put(typeParameter, wildcard);
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}
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final PsiElementFactory factory = JavaPsiFacade.getElementFactory(psiClass.getProject());
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return PsiTypeLookupItem.createLookupItem(factory.createType(psiClass, substitutor), psiClass);
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}
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}
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}
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return new JavaPsiClassReferenceElement(psiClass);
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}
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@Nullable
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public static Pair<PsiClass, Integer> getTypeParameterInfo(PsiElement context) {
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final PsiReferenceParameterList parameterList = PsiTreeUtil.getContextOfType(context, PsiReferenceParameterList.class, true);
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if (parameterList == null) return null;
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final PsiJavaCodeReferenceElement referenceElement = (PsiJavaCodeReferenceElement)parameterList.getParent();
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final int parameterIndex;
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int index = 0;
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final PsiTypeElement typeElement = PsiTreeUtil.getContextOfType(context, PsiTypeElement.class, true);
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if(typeElement != null){
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final PsiTypeElement[] elements = referenceElement.getParameterList().getTypeParameterElements();
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while (index < elements.length) {
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final PsiTypeElement element = elements[index++];
|
|
if(element == typeElement) break;
|
|
}
|
|
}
|
|
parameterIndex = index - 1;
|
|
|
|
if(parameterIndex < 0) return null;
|
|
final PsiElement target = referenceElement.resolve();
|
|
if(!(target instanceof PsiClass)) return null;
|
|
|
|
final PsiClass referencedClass = (PsiClass)target;
|
|
final PsiTypeParameter[] typeParameters = referencedClass.getTypeParameters();
|
|
if(typeParameters.length <= parameterIndex) return null;
|
|
|
|
return Pair.create(referencedClass, parameterIndex);
|
|
}
|
|
|
|
|
|
public static void processInheritors(final CompletionParameters parameters, final PsiElement identifierCopy, final PsiFile file, final Collection<PsiClassType> expectedClassTypes,
|
|
final Consumer<PsiType> consumer, final PrefixMatcher matcher) {
|
|
//quick
|
|
for (final PsiClassType type : expectedClassTypes) {
|
|
consumer.consume(type);
|
|
|
|
final PsiClassType.ClassResolveResult baseResult = JavaCompletionUtil.originalize(type).resolveGenerics();
|
|
final PsiClass baseClass = baseResult.getElement();
|
|
if (baseClass == null) return;
|
|
|
|
final PsiSubstitutor baseSubstitutor = baseResult.getSubstitutor();
|
|
|
|
final THashSet<PsiType> statVariants = new THashSet<PsiType>();
|
|
final Processor<PsiClass> processor = CodeInsightUtil.createInheritorsProcessor(parameters.getPosition(), type, 0, false,
|
|
statVariants, baseClass, baseSubstitutor);
|
|
final StatisticsInfo[] statisticsInfos =
|
|
StatisticsManager.getInstance().getAllValues(JavaStatisticsManager.getAfterNewKey(type));
|
|
for (final StatisticsInfo statisticsInfo : statisticsInfos) {
|
|
final String value = statisticsInfo.getValue();
|
|
if (value.startsWith(JavaStatisticsManager.CLASS_PREFIX)) {
|
|
final String qname = value.substring(JavaStatisticsManager.CLASS_PREFIX.length());
|
|
final PsiClass psiClass = JavaPsiFacade.getInstance(file.getProject()).findClass(qname, file.getResolveScope());
|
|
if (psiClass != null && !PsiTreeUtil.isAncestor(file, psiClass, true) && !processor.process(psiClass)) break;
|
|
}
|
|
}
|
|
|
|
for (final PsiType variant : statVariants) {
|
|
consumer.consume(variant);
|
|
}
|
|
}
|
|
|
|
//long
|
|
final Condition<String> shortNameCondition = new Condition<String>() {
|
|
public boolean value(String s) {
|
|
return matcher.prefixMatches(s);
|
|
}
|
|
};
|
|
for (final PsiClassType type : expectedClassTypes) {
|
|
final PsiClass psiClass = type.resolve();
|
|
if (psiClass != null && !psiClass.hasModifierProperty(PsiModifier.FINAL)) {
|
|
for (final PsiType psiType : CodeInsightUtil.addSubtypes(type, identifierCopy, false, shortNameCondition)) {
|
|
consumer.consume(psiType);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public static ExpectedTypeInfo[] getExpectedTypes(final CompletionParameters parameters) {
|
|
final PsiElement position = parameters.getPosition();
|
|
if (psiElement().withParent(psiElement(PsiReferenceExpression.class).withParent(PsiThrowStatement.class)).accepts(position)) {
|
|
final PsiElementFactory factory = JavaPsiFacade.getInstance(position.getProject()).getElementFactory();
|
|
final PsiClassType classType = factory
|
|
.createTypeByFQClassName(CommonClassNames.JAVA_LANG_RUNTIME_EXCEPTION, position.getResolveScope());
|
|
final List<ExpectedTypeInfo> result = new SmartList<ExpectedTypeInfo>();
|
|
result.add(new ExpectedTypeInfoImpl(classType, ExpectedTypeInfo.TYPE_OR_SUBTYPE, 0, classType, TailType.SEMICOLON));
|
|
final PsiMethod method = PsiTreeUtil.getContextOfType(position, PsiMethod.class, true);
|
|
if (method != null) {
|
|
for (final PsiClassType type : method.getThrowsList().getReferencedTypes()) {
|
|
result.add(new ExpectedTypeInfoImpl(type, ExpectedTypeInfo.TYPE_OR_SUBTYPE, 0, type, TailType.SEMICOLON));
|
|
}
|
|
}
|
|
return result.toArray(new ExpectedTypeInfo[result.size()]);
|
|
}
|
|
|
|
PsiExpression expression = PsiTreeUtil.getContextOfType(position, PsiExpression.class, true);
|
|
if (expression == null) return ExpectedTypeInfo.EMPTY_ARRAY;
|
|
|
|
return ExpectedTypesProvider.getExpectedTypes(expression, true, parameters.getCompletionType() == CompletionType.SMART, false);
|
|
}
|
|
|
|
private static void addExpectedType(final CompletionResultSet result, final PsiType type, final CompletionParameters parameters, Collection<ExpectedTypeInfo> infos) {
|
|
if (!JavaCompletionUtil.hasAccessibleConstructor(type)) return;
|
|
|
|
final PsiClass psiClass = PsiUtil.resolveClassInType(type);
|
|
if (psiClass == null) return;
|
|
|
|
final PsiClass parentClass = psiClass.getContainingClass();
|
|
if (parentClass != null && !psiClass.hasModifierProperty(PsiModifier.STATIC) &&
|
|
!PsiTreeUtil.isAncestor(parentClass, parameters.getPosition(), false) &&
|
|
!(parentClass.getContainingFile().equals(parameters.getOriginalFile()) &&
|
|
parentClass.getTextRange().contains(parameters.getOffset()))) {
|
|
return;
|
|
}
|
|
|
|
final LookupItem item = PsiTypeLookupItem.createLookupItem(JavaCompletionUtil.eliminateWildcards(type), parameters.getPosition());
|
|
JavaCompletionUtil.setShowFQN(item);
|
|
|
|
if (psiClass.isInterface() || psiClass.hasModifierProperty(PsiModifier.ABSTRACT)) {
|
|
item.setAutoCompletionPolicy(AutoCompletionPolicy.NEVER_AUTOCOMPLETE);
|
|
item.setAttribute(LookupItem.INDICATE_ANONYMOUS, "");
|
|
}
|
|
|
|
result.addElement(decorate(type instanceof PsiClassType ? LookupElementDecorator.withInsertHandler(item, ConstructorInsertHandler.INSTANCE) : item, infos));
|
|
}
|
|
|
|
static Set<LookupElement> completeReference(final PsiElement element, PsiReference reference, final ElementFilter filter, final boolean acceptClasses, CompletionParameters parameters) {
|
|
if (reference instanceof PsiMultiReference) {
|
|
reference = ContainerUtil.findInstance(((PsiMultiReference) reference).getReferences(), PsiJavaReference.class);
|
|
}
|
|
|
|
if (reference instanceof PsiJavaReference) {
|
|
final PsiJavaReference javaReference = (PsiJavaReference)reference;
|
|
|
|
return JavaCompletionUtil.processJavaReference(element, javaReference, new ElementFilter() {
|
|
public boolean isAcceptable(Object element, PsiElement context) {
|
|
return filter.isAcceptable(element, context);
|
|
}
|
|
|
|
public boolean isClassAcceptable(Class hintClass) {
|
|
if (acceptClasses) {
|
|
return ReflectionCache.isAssignable(PsiClass.class, hintClass);
|
|
}
|
|
|
|
return ReflectionCache.isAssignable(PsiVariable.class, hintClass) ||
|
|
ReflectionCache.isAssignable(PsiMethod.class, hintClass) ||
|
|
ReflectionCache.isAssignable(CandidateInfo.class, hintClass);
|
|
}
|
|
}, true, null, parameters);
|
|
}
|
|
|
|
return Collections.emptySet();
|
|
}
|
|
|
|
@Override
|
|
public void beforeCompletion(@NotNull CompletionInitializationContext context) {
|
|
if (context.getCompletionType() != CompletionType.SMART) {
|
|
return;
|
|
}
|
|
|
|
if (!context.getEditor().getSelectionModel().hasSelection()) {
|
|
final PsiFile file = context.getFile();
|
|
PsiElement element = file.findElementAt(context.getStartOffset());
|
|
if (element instanceof PsiIdentifier) {
|
|
element = element.getParent();
|
|
while (element instanceof PsiJavaCodeReferenceElement || element instanceof PsiCall ||
|
|
element instanceof PsiThisExpression || element instanceof PsiSuperExpression ||
|
|
element instanceof PsiTypeElement ||
|
|
element instanceof PsiClassObjectAccessExpression) {
|
|
int newEnd = element.getTextRange().getEndOffset();
|
|
if (element instanceof PsiMethodCallExpression) {
|
|
newEnd = ((PsiMethodCallExpression)element).getMethodExpression().getTextRange().getEndOffset();
|
|
}
|
|
else if (element instanceof PsiNewExpression) {
|
|
final PsiJavaCodeReferenceElement classReference = ((PsiNewExpression)element).getClassReference();
|
|
if (classReference != null) {
|
|
newEnd = classReference.getTextRange().getEndOffset();
|
|
}
|
|
}
|
|
context.getOffsetMap().addOffset(CompletionInitializationContext.IDENTIFIER_END_OFFSET, newEnd);
|
|
element = element.getParent();
|
|
}
|
|
}
|
|
}
|
|
|
|
PsiElement lastElement = context.getFile().findElementAt(context.getStartOffset() - 1);
|
|
if (lastElement != null && lastElement.getText().equals("(")) {
|
|
final PsiElement parent = lastElement.getParent();
|
|
if (parent instanceof PsiTypeCastExpression) {
|
|
context.setFileCopyPatcher(new DummyIdentifierPatcher(""));
|
|
return;
|
|
}
|
|
if (parent instanceof PsiParenthesizedExpression) {
|
|
context.setFileCopyPatcher(new DummyIdentifierPatcher("xxx)yyy ")); // to handle type cast
|
|
return;
|
|
}
|
|
}
|
|
context.setFileCopyPatcher(new DummyIdentifierPatcher("xxx"));
|
|
}
|
|
|
|
}
|