001 /*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017 package org.jetbrains.jet.lang.resolve.calls.tasks;
018
019 import com.google.common.collect.Lists;
020 import com.google.common.collect.Sets;
021 import org.jetbrains.annotations.NotNull;
022 import org.jetbrains.jet.lang.descriptors.*;
023 import org.jetbrains.jet.lang.resolve.BindingTrace;
024 import org.jetbrains.jet.lang.resolve.name.Name;
025 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
026 import org.jetbrains.jet.lang.types.ErrorUtils;
027 import org.jetbrains.jet.lang.types.JetType;
028
029 import java.util.*;
030
031 import static org.jetbrains.jet.lang.resolve.LibrarySourceHacks.filterOutMembersFromLibrarySource;
032
033 public class CallableDescriptorCollectors {
034 public static CallableDescriptorCollector<FunctionDescriptor> FUNCTIONS =
035 new FilteredCollector<FunctionDescriptor>(new FunctionCollector());
036 public static CallableDescriptorCollector<VariableDescriptor> VARIABLES =
037 new FilteredCollector<VariableDescriptor>(new VariableCollector());
038 public static CallableDescriptorCollector<VariableDescriptor> PROPERTIES =
039 new FilteredCollector<VariableDescriptor>(new PropertyCollector());
040 public static List<CallableDescriptorCollector<? extends CallableDescriptor>> FUNCTIONS_AND_VARIABLES =
041 Lists.newArrayList(FUNCTIONS, VARIABLES);
042
043 private static class FunctionCollector implements CallableDescriptorCollector<FunctionDescriptor> {
044
045 @NotNull
046 @Override
047 public Collection<FunctionDescriptor> getNonExtensionsByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
048 Set<FunctionDescriptor> functions = Sets.newLinkedHashSet();
049 for (FunctionDescriptor function : scope.getFunctions(name)) {
050 if (function.getReceiverParameter() == null) {
051 functions.add(function);
052 }
053 }
054 addConstructors(scope, name, functions);
055 return functions;
056 }
057
058 @NotNull
059 @Override
060 public Collection<FunctionDescriptor> getMembersByName(@NotNull JetType receiverType, Name name, @NotNull BindingTrace bindingTrace) {
061 JetScope receiverScope = receiverType.getMemberScope();
062 Set<FunctionDescriptor> members = Sets.newHashSet(receiverScope.getFunctions(name));
063 addConstructors(receiverScope, name, members);
064 return members;
065 }
066
067 @NotNull
068 @Override
069 public Collection<FunctionDescriptor> getNonMembersByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
070 return scope.getFunctions(name);
071 }
072
073 private static void addConstructors(JetScope scope, Name name, Collection<FunctionDescriptor> functions) {
074 ClassifierDescriptor classifier = scope.getClassifier(name);
075 if (classifier instanceof ClassDescriptor && !ErrorUtils.isError(classifier.getTypeConstructor())) {
076 ClassDescriptor classDescriptor = (ClassDescriptor) classifier;
077 functions.addAll(classDescriptor.getConstructors());
078 }
079 }
080
081 @Override
082 public String toString() {
083 return "FUNCTIONS";
084 }
085 }
086
087 private static class VariableCollector implements CallableDescriptorCollector<VariableDescriptor> {
088
089 @NotNull
090 @Override
091 public Collection<VariableDescriptor> getNonExtensionsByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
092 VariableDescriptor localVariable = scope.getLocalVariable(name);
093 if (localVariable != null) {
094 return Collections.singleton(localVariable);
095 }
096
097 LinkedHashSet<VariableDescriptor> variables = Sets.newLinkedHashSet();
098 for (VariableDescriptor variable : scope.getProperties(name)) {
099 if (variable.getReceiverParameter() == null) {
100 variables.add(variable);
101 }
102 }
103 return variables;
104 }
105
106 @NotNull
107 @Override
108 public Collection<VariableDescriptor> getMembersByName(@NotNull JetType receiverType, Name name, @NotNull BindingTrace bindingTrace) {
109 return receiverType.getMemberScope().getProperties(name);
110 }
111
112 @NotNull
113 @Override
114 public Collection<VariableDescriptor> getNonMembersByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
115 Collection<VariableDescriptor> result = Sets.newLinkedHashSet();
116
117 VariableDescriptor localVariable = scope.getLocalVariable(name);
118 if (localVariable != null) {
119 result.add(localVariable);
120 }
121 result.addAll(scope.getProperties(name));
122 return result;
123 }
124
125 @Override
126 public String toString() {
127 return "VARIABLES";
128 }
129 }
130
131 private static class PropertyCollector implements CallableDescriptorCollector<VariableDescriptor> {
132 private static Collection<VariableDescriptor> filterProperties(Collection<? extends VariableDescriptor> variableDescriptors) {
133 ArrayList<VariableDescriptor> properties = Lists.newArrayList();
134 for (VariableDescriptor descriptor : variableDescriptors) {
135 if (descriptor instanceof PropertyDescriptor) {
136 properties.add(descriptor);
137 }
138 }
139 return properties;
140 }
141
142 @NotNull
143 @Override
144 public Collection<VariableDescriptor> getNonExtensionsByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
145 return filterProperties(VARIABLES.getNonExtensionsByName(scope, name, bindingTrace));
146 }
147
148 @NotNull
149 @Override
150 public Collection<VariableDescriptor> getMembersByName(@NotNull JetType receiver, Name name, @NotNull BindingTrace bindingTrace) {
151 return filterProperties(VARIABLES.getMembersByName(receiver, name, bindingTrace));
152 }
153
154 @NotNull
155 @Override
156 public Collection<VariableDescriptor> getNonMembersByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
157 return filterProperties(VARIABLES.getNonMembersByName(scope, name, bindingTrace));
158 }
159
160 @Override
161 public String toString() {
162 return "PROPERTIES";
163 }
164 }
165
166 private static class FilteredCollector<D extends CallableDescriptor> implements CallableDescriptorCollector<D> {
167 private final CallableDescriptorCollector<D> delegate;
168
169 private FilteredCollector(CallableDescriptorCollector<D> delegate) {
170 this.delegate = delegate;
171 }
172
173 @NotNull
174 @Override
175 public Collection<D> getNonExtensionsByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
176 return filterOutMembersFromLibrarySource(delegate.getNonExtensionsByName(scope, name, bindingTrace), bindingTrace);
177 }
178
179 @NotNull
180 @Override
181 public Collection<D> getMembersByName(@NotNull JetType receiver, Name name, @NotNull BindingTrace bindingTrace) {
182 return filterOutMembersFromLibrarySource(delegate.getMembersByName(receiver, name, bindingTrace), bindingTrace);
183 }
184
185 @NotNull
186 @Override
187 public Collection<D> getNonMembersByName(JetScope scope, Name name, @NotNull BindingTrace bindingTrace) {
188 return filterOutMembersFromLibrarySource(delegate.getNonMembersByName(scope, name, bindingTrace), bindingTrace);
189 }
190
191 @Override
192 public String toString() {
193 return delegate.toString();
194 }
195 }
196
197 private CallableDescriptorCollectors() {
198 }
199 }