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