001 /*
002 * Copyright 2010-2015 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.kotlin.resolve;
018
019 import com.google.common.collect.ImmutableMap;
020 import com.intellij.psi.PsiElement;
021 import org.jetbrains.annotations.NotNull;
022 import org.jetbrains.annotations.Nullable;
023 import org.jetbrains.annotations.ReadOnly;
024 import org.jetbrains.annotations.TestOnly;
025 import org.jetbrains.kotlin.cfg.TailRecursionKind;
026 import org.jetbrains.kotlin.descriptors.*;
027 import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor;
028 import org.jetbrains.kotlin.name.FqName;
029 import org.jetbrains.kotlin.name.FqNameUnsafe;
030 import org.jetbrains.kotlin.psi.*;
031 import org.jetbrains.kotlin.resolve.calls.inference.ConstraintSystemCompleter;
032 import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
033 import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowInfo;
034 import org.jetbrains.kotlin.resolve.constants.CompileTimeConstant;
035 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics;
036 import org.jetbrains.kotlin.resolve.scopes.KtScope;
037 import org.jetbrains.kotlin.resolve.scopes.LexicalScope;
038 import org.jetbrains.kotlin.resolve.scopes.receivers.Qualifier;
039 import org.jetbrains.kotlin.types.DeferredType;
040 import org.jetbrains.kotlin.types.KotlinType;
041 import org.jetbrains.kotlin.types.expressions.CaptureKind;
042 import org.jetbrains.kotlin.types.expressions.JetTypeInfo;
043 import org.jetbrains.kotlin.types.expressions.PreliminaryDeclarationVisitor;
044 import org.jetbrains.kotlin.util.Box;
045 import org.jetbrains.kotlin.util.slicedMap.*;
046
047 import java.util.Collection;
048 import java.util.Collections;
049
050 import static org.jetbrains.kotlin.util.slicedMap.RewritePolicy.DO_NOTHING;
051
052 public interface BindingContext {
053 BindingContext EMPTY = new BindingContext() {
054 @NotNull
055 @Override
056 public Diagnostics getDiagnostics() {
057 return Diagnostics.Companion.getEMPTY();
058 }
059
060 @Override
061 public <K, V> V get(ReadOnlySlice<K, V> slice, K key) {
062 return null;
063 }
064
065 @NotNull
066 @Override
067 public <K, V> Collection<K> getKeys(WritableSlice<K, V> slice) {
068 return Collections.emptyList();
069 }
070
071 @NotNull
072 @TestOnly
073 @Override
074 public <K, V> ImmutableMap<K, V> getSliceContents(@NotNull ReadOnlySlice<K, V> slice) {
075 return ImmutableMap.of();
076 }
077
078 @Nullable
079 @Override
080 public KotlinType getType(@NotNull KtExpression expression) {
081 return null;
082 }
083
084 @Override
085 public void addOwnDataTo(@NotNull BindingTrace trace, boolean commitDiagnostics) {
086 // Do nothing
087 }
088 };
089
090 WritableSlice<KtAnnotationEntry, AnnotationDescriptor> ANNOTATION = Slices.createSimpleSlice();
091
092 WritableSlice<KtExpression, CompileTimeConstant<?>> COMPILE_TIME_VALUE = Slices.createSimpleSlice();
093
094 WritableSlice<KtTypeReference, KotlinType> TYPE = Slices.createSimpleSlice();
095 WritableSlice<KtExpression, JetTypeInfo> EXPRESSION_TYPE_INFO = new BasicWritableSlice<KtExpression, JetTypeInfo>(DO_NOTHING);
096 WritableSlice<KtExpression, KotlinType> EXPECTED_EXPRESSION_TYPE = new BasicWritableSlice<KtExpression, KotlinType>(DO_NOTHING);
097 WritableSlice<KtFunction, KotlinType> EXPECTED_RETURN_TYPE = new BasicWritableSlice<KtFunction, KotlinType>(DO_NOTHING);
098 WritableSlice<KtExpression, DataFlowInfo> DATAFLOW_INFO_AFTER_CONDITION = Slices.createSimpleSlice();
099
100 /**
101 * A qualifier corresponds to a receiver expression (if any). For 'A.B' qualifier is recorded for 'A'.
102 */
103 WritableSlice<KtExpression, Qualifier> QUALIFIER = new BasicWritableSlice<KtExpression, Qualifier>(DO_NOTHING);
104
105 WritableSlice<KtReferenceExpression, DeclarationDescriptor> REFERENCE_TARGET =
106 new BasicWritableSlice<KtReferenceExpression, DeclarationDescriptor>(DO_NOTHING);
107 // if 'A' really means 'A.Companion' then this slice stores class descriptor for A, REFERENCE_TARGET stores descriptor Companion in this case
108 WritableSlice<KtReferenceExpression, ClassDescriptor> SHORT_REFERENCE_TO_COMPANION_OBJECT =
109 new BasicWritableSlice<KtReferenceExpression, ClassDescriptor>(DO_NOTHING);
110
111 WritableSlice<Call, ResolvedCall<?>> RESOLVED_CALL = new BasicWritableSlice<Call, ResolvedCall<?>>(DO_NOTHING);
112 WritableSlice<ResolvedCall<?>, TailRecursionKind> TAIL_RECURSION_CALL = Slices.createSimpleSlice();
113 WritableSlice<KtElement, ConstraintSystemCompleter> CONSTRAINT_SYSTEM_COMPLETER = new BasicWritableSlice<KtElement, ConstraintSystemCompleter>(DO_NOTHING);
114 WritableSlice<KtElement, Call> CALL = new BasicWritableSlice<KtElement, Call>(DO_NOTHING);
115
116 WritableSlice<KtExpression, Collection<? extends DeclarationDescriptor>> AMBIGUOUS_REFERENCE_TARGET =
117 new BasicWritableSlice<KtExpression, Collection<? extends DeclarationDescriptor>>(DO_NOTHING);
118
119 WritableSlice<KtExpression, ResolvedCall<FunctionDescriptor>> LOOP_RANGE_ITERATOR_RESOLVED_CALL = Slices.createSimpleSlice();
120
121 WritableSlice<KtExpression, ResolvedCall<FunctionDescriptor>> LOOP_RANGE_HAS_NEXT_RESOLVED_CALL = Slices.createSimpleSlice();
122 WritableSlice<KtExpression, ResolvedCall<FunctionDescriptor>> LOOP_RANGE_NEXT_RESOLVED_CALL = Slices.createSimpleSlice();
123
124 WritableSlice<PropertyAccessorDescriptor, ResolvedCall<FunctionDescriptor>> DELEGATED_PROPERTY_RESOLVED_CALL = Slices.createSimpleSlice();
125 WritableSlice<PropertyAccessorDescriptor, Call> DELEGATED_PROPERTY_CALL = Slices.createSimpleSlice();
126
127 WritableSlice<PropertyDescriptor, ResolvedCall<FunctionDescriptor>> DELEGATED_PROPERTY_PD_RESOLVED_CALL = Slices.createSimpleSlice();
128
129 WritableSlice<KtMultiDeclarationEntry, ResolvedCall<FunctionDescriptor>> COMPONENT_RESOLVED_CALL = Slices.createSimpleSlice();
130
131 WritableSlice<KtExpression, ResolvedCall<FunctionDescriptor>> INDEXED_LVALUE_GET = Slices.createSimpleSlice();
132 WritableSlice<KtExpression, ResolvedCall<FunctionDescriptor>> INDEXED_LVALUE_SET = Slices.createSimpleSlice();
133
134 WritableSlice<KtExpression, KotlinType> SMARTCAST = Slices.createSimpleSlice();
135
136 WritableSlice<KtWhenExpression, Boolean> EXHAUSTIVE_WHEN = Slices.createSimpleSlice();
137
138 @Deprecated WritableSlice<KtExpression, KtScope> RESOLUTION_SCOPE = Slices.createSimpleSlice();
139 WritableSlice<KtElement, LexicalScope> LEXICAL_SCOPE = Slices.createSimpleSlice();
140
141 WritableSlice<ScriptDescriptor, KtScope> SCRIPT_SCOPE = Slices.createSimpleSlice();
142
143 WritableSlice<KtExpression, Boolean> VARIABLE_REASSIGNMENT = Slices.createSimpleSetSlice();
144 WritableSlice<ValueParameterDescriptor, Boolean> AUTO_CREATED_IT = Slices.createSimpleSetSlice();
145
146 /**
147 * Has type of current expression has been already resolved
148 */
149 WritableSlice<KtExpression, Boolean> PROCESSED = Slices.createSimpleSetSlice();
150 WritableSlice<KtElement, Boolean> USED_AS_EXPRESSION = Slices.createSimpleSetSlice();
151 WritableSlice<KtElement, Boolean> UNREACHABLE_CODE = Slices.createSimpleSetSlice();
152
153 WritableSlice<VariableDescriptor, CaptureKind> CAPTURED_IN_CLOSURE = new BasicWritableSlice<VariableDescriptor, CaptureKind>(DO_NOTHING);
154 WritableSlice<KtDeclaration, PreliminaryDeclarationVisitor> PRELIMINARY_VISITOR = new BasicWritableSlice<KtDeclaration, PreliminaryDeclarationVisitor>(DO_NOTHING);
155
156 WritableSlice<CallableMemberDescriptor, Boolean> NEED_SYNTHETIC_ACCESSOR = new BasicWritableSlice<CallableMemberDescriptor, Boolean>(DO_NOTHING);
157
158 WritableSlice<Box<DeferredType>, Boolean> DEFERRED_TYPE = Slices.createCollectiveSetSlice();
159
160 WritableSlice<PropertyDescriptor, Boolean> BACKING_FIELD_REQUIRED = new Slices.SetSlice<PropertyDescriptor>(DO_NOTHING) {
161 @Override
162 public Boolean computeValue(
163 SlicedMap map,
164 PropertyDescriptor propertyDescriptor,
165 Boolean backingFieldRequired,
166 boolean valueNotFound
167 ) {
168 if (propertyDescriptor.getKind() != CallableMemberDescriptor.Kind.DECLARATION) {
169 return false;
170 }
171 backingFieldRequired = valueNotFound ? false : backingFieldRequired;
172 PsiElement declarationPsiElement = DescriptorToSourceUtils.descriptorToDeclaration(propertyDescriptor);
173 if (declarationPsiElement instanceof KtParameter) {
174 KtParameter jetParameter = (KtParameter) declarationPsiElement;
175 return jetParameter.hasValOrVar() ||
176 backingFieldRequired; // this part is unused because we do not allow access to constructor parameters in member bodies
177 }
178 if (propertyDescriptor.getModality() == Modality.ABSTRACT) return false;
179 PropertyGetterDescriptor getter = propertyDescriptor.getGetter();
180 PropertySetterDescriptor setter = propertyDescriptor.getSetter();
181
182 if (getter == null) return true;
183 if (propertyDescriptor.isVar() && setter == null) return true;
184 if (setter != null && !setter.hasBody() && setter.getModality() != Modality.ABSTRACT) return true;
185 if (!getter.hasBody() && getter.getModality() != Modality.ABSTRACT) return true;
186
187 return backingFieldRequired;
188 }
189 };
190 WritableSlice<PropertyDescriptor, Boolean> IS_UNINITIALIZED = Slices.createSimpleSetSlice();
191
192 WritableSlice<KtFunctionLiteralExpression, Boolean> BLOCK = new Slices.SetSlice<KtFunctionLiteralExpression>(DO_NOTHING) {
193 @Override
194 public Boolean computeValue(SlicedMap map, KtFunctionLiteralExpression expression, Boolean isBlock, boolean valueNotFound) {
195 isBlock = valueNotFound ? false : isBlock;
196 return isBlock && !expression.getFunctionLiteral().hasParameterSpecification();
197 }
198 };
199
200 WritableSlice<PsiElement, ClassDescriptor> CLASS = Slices.createSimpleSlice();
201 WritableSlice<PsiElement, ScriptDescriptor> SCRIPT = Slices.createSimpleSlice();
202 WritableSlice<KtTypeParameter, TypeParameterDescriptor> TYPE_PARAMETER = Slices.createSimpleSlice();
203 /**
204 * @see BindingContextUtils#recordFunctionDeclarationToDescriptor(BindingTrace, PsiElement, SimpleFunctionDescriptor)}
205 */
206 WritableSlice<PsiElement, SimpleFunctionDescriptor> FUNCTION = Slices.createSimpleSlice();
207 WritableSlice<PsiElement, ConstructorDescriptor> CONSTRUCTOR = Slices.createSimpleSlice();
208 WritableSlice<ConstructorDescriptor, ResolvedCall<ConstructorDescriptor>> CONSTRUCTOR_RESOLVED_DELEGATION_CALL =
209 Slices.createSimpleSlice();
210 WritableSlice<PsiElement, VariableDescriptor> VARIABLE = Slices.createSimpleSlice();
211 WritableSlice<KtParameter, VariableDescriptor> VALUE_PARAMETER = Slices.createSimpleSlice();
212 WritableSlice<KtPropertyAccessor, PropertyAccessorDescriptor> PROPERTY_ACCESSOR = Slices.createSimpleSlice();
213 WritableSlice<PsiElement, PropertyDescriptor> PRIMARY_CONSTRUCTOR_PARAMETER = Slices.createSimpleSlice();
214
215 WritableSlice[] DECLARATIONS_TO_DESCRIPTORS = new WritableSlice[] {
216 CLASS, TYPE_PARAMETER, FUNCTION, CONSTRUCTOR, VARIABLE, VALUE_PARAMETER, PROPERTY_ACCESSOR,
217 PRIMARY_CONSTRUCTOR_PARAMETER
218 };
219
220 @SuppressWarnings("unchecked")
221 ReadOnlySlice<PsiElement, DeclarationDescriptor> DECLARATION_TO_DESCRIPTOR =
222 Slices.<PsiElement, DeclarationDescriptor>sliceBuilder()
223 .setFurtherLookupSlices(DECLARATIONS_TO_DESCRIPTORS)
224 .build();
225
226 WritableSlice<KtReferenceExpression, PsiElement> LABEL_TARGET = Slices.createSimpleSlice();
227 WritableSlice<KtReferenceExpression, Collection<? extends PsiElement>> AMBIGUOUS_LABEL_TARGET = Slices.createSimpleSlice();
228 WritableSlice<ValueParameterDescriptor, PropertyDescriptor> VALUE_PARAMETER_AS_PROPERTY = Slices.createSimpleSlice();
229
230 WritableSlice<ValueParameterDescriptor, FunctionDescriptor> DATA_CLASS_COMPONENT_FUNCTION = Slices.createSimpleSlice();
231 WritableSlice<ClassDescriptor, FunctionDescriptor> DATA_CLASS_COPY_FUNCTION = Slices.createSimpleSlice();
232
233 WritableSlice<FqNameUnsafe, ClassDescriptor> FQNAME_TO_CLASS_DESCRIPTOR =
234 new BasicWritableSlice<FqNameUnsafe, ClassDescriptor>(DO_NOTHING, true);
235 WritableSlice<KtFile, PackageFragmentDescriptor> FILE_TO_PACKAGE_FRAGMENT = Slices.createSimpleSlice();
236 WritableSlice<FqName, Collection<KtFile>> PACKAGE_TO_FILES = Slices.createSimpleSlice();
237
238 @SuppressWarnings("UnusedDeclaration")
239 @Deprecated // This field is needed only for the side effects of its initializer
240 Void _static_initializer = BasicWritableSlice.initSliceDebugNames(BindingContext.class);
241
242 @NotNull
243 Diagnostics getDiagnostics();
244
245 @Nullable
246 <K, V> V get(ReadOnlySlice<K, V> slice, K key);
247
248 // slice.isCollective() must be true
249 @NotNull
250 @ReadOnly
251 <K, V> Collection<K> getKeys(WritableSlice<K, V> slice);
252
253 /** This method should be used only for debug and testing */
254 @TestOnly
255 @NotNull
256 <K, V> ImmutableMap<K, V> getSliceContents(@NotNull ReadOnlySlice<K, V> slice);
257
258 @Nullable
259 KotlinType getType(@NotNull KtExpression expression);
260
261 void addOwnDataTo(@NotNull BindingTrace trace, boolean commitDiagnostics);
262 }