001 /*
002 * Copyright 2010-2014 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.codegen.binding;
018
019 import com.intellij.openapi.vfs.VirtualFile;
020 import org.jetbrains.annotations.NotNull;
021 import org.jetbrains.annotations.Nullable;
022 import org.jetbrains.jet.codegen.SamType;
023 import org.jetbrains.jet.codegen.state.GenerationState;
024 import org.jetbrains.jet.codegen.when.WhenByEnumsMapping;
025 import org.jetbrains.jet.lang.descriptors.*;
026 import org.jetbrains.jet.lang.descriptors.impl.ClassDescriptorImpl;
027 import org.jetbrains.jet.lang.psi.*;
028 import org.jetbrains.jet.lang.resolve.BindingContext;
029 import org.jetbrains.jet.lang.resolve.BindingTrace;
030 import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
031 import org.jetbrains.jet.lang.resolve.java.JvmAbi;
032 import org.jetbrains.jet.lang.resolve.name.FqName;
033 import org.jetbrains.jet.lang.resolve.name.Name;
034 import org.jetbrains.jet.lang.resolve.name.SpecialNames;
035 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
036 import org.jetbrains.jet.lang.types.JetType;
037 import org.jetbrains.jet.lang.types.lang.KotlinBuiltIns;
038 import org.jetbrains.jet.util.slicedmap.BasicWritableSlice;
039 import org.jetbrains.jet.util.slicedmap.Slices;
040 import org.jetbrains.jet.util.slicedmap.WritableSlice;
041 import org.jetbrains.org.objectweb.asm.Type;
042
043 import java.util.*;
044
045 import static org.jetbrains.jet.codegen.JvmCodegenUtil.isInterface;
046 import static org.jetbrains.jet.lang.resolve.BindingContext.*;
047 import static org.jetbrains.jet.lang.resolve.calls.callUtil.CallUtilPackage.getResolvedCall;
048
049 public class CodegenBinding {
050 public static final WritableSlice<ClassDescriptor, MutableClosure> CLOSURE = Slices.createSimpleSlice();
051
052 public static final WritableSlice<FunctionDescriptor, ClassDescriptor> CLASS_FOR_FUNCTION = Slices.createSimpleSlice();
053
054 public static final WritableSlice<ScriptDescriptor, ClassDescriptor> CLASS_FOR_SCRIPT = Slices.createSimpleSlice();
055
056 public static final WritableSlice<ClassDescriptor, Type> ASM_TYPE = Slices.createCollectiveSlice();
057
058 public static final WritableSlice<ClassDescriptor, Boolean> ENUM_ENTRY_CLASS_NEED_SUBCLASS = Slices.createSimpleSetSlice();
059
060 public static final WritableSlice<ClassDescriptor, Collection<ClassDescriptor>> INNER_CLASSES = Slices.createSimpleSlice();
061
062 public static final WritableSlice<JetExpression, SamType> SAM_VALUE = Slices.createSimpleSlice();
063
064 public static final WritableSlice<JetWhenExpression, WhenByEnumsMapping> MAPPING_FOR_WHEN_BY_ENUM = Slices.
065 <JetWhenExpression, WhenByEnumsMapping>sliceBuilder().build();
066
067 public static final WritableSlice<String, List<WhenByEnumsMapping>> MAPPINGS_FOR_WHENS_BY_ENUM_IN_CLASS_FILE =
068 Slices.<String, List<WhenByEnumsMapping>>sliceBuilder().build();
069
070 static {
071 BasicWritableSlice.initSliceDebugNames(CodegenBinding.class);
072 }
073
074 private CodegenBinding() {
075 }
076
077 public static void initTrace(@NotNull GenerationState state) {
078 CodegenAnnotatingVisitor visitor = new CodegenAnnotatingVisitor(state);
079 for (JetFile file : allFilesInPackages(state.getBindingContext(), state.getFiles())) {
080 file.accept(visitor);
081 }
082 }
083
084 public static boolean enumEntryNeedSubclass(BindingContext bindingContext, JetEnumEntry enumEntry) {
085 return enumEntryNeedSubclass(bindingContext, bindingContext.get(CLASS, enumEntry));
086 }
087
088 public static boolean enumEntryNeedSubclass(BindingContext bindingContext, ClassDescriptor classDescriptor) {
089 return Boolean.TRUE.equals(bindingContext.get(ENUM_ENTRY_CLASS_NEED_SUBCLASS, classDescriptor));
090 }
091
092 // SCRIPT: Generate asmType for script, move to ScriptingUtil
093 @NotNull
094 public static Type asmTypeForScriptDescriptor(BindingContext bindingContext, @NotNull ScriptDescriptor scriptDescriptor) {
095 ClassDescriptor classDescriptor = bindingContext.get(CLASS_FOR_SCRIPT, scriptDescriptor);
096 //noinspection ConstantConditions
097 return getAsmType(bindingContext, classDescriptor);
098 }
099
100 // SCRIPT: Generate asmType for script, move to ScriptingUtil
101 @NotNull
102 public static Type asmTypeForScriptPsi(BindingContext bindingContext, @NotNull JetScript script) {
103 ScriptDescriptor scriptDescriptor = bindingContext.get(SCRIPT, script);
104 if (scriptDescriptor == null) {
105 throw new IllegalStateException("Script descriptor not found by PSI " + script);
106 }
107 return asmTypeForScriptDescriptor(bindingContext, scriptDescriptor);
108 }
109
110 @NotNull
111 public static ClassDescriptor anonymousClassForFunction(
112 @NotNull BindingContext bindingContext,
113 @NotNull FunctionDescriptor descriptor
114 ) {
115 //noinspection ConstantConditions
116 return bindingContext.get(CLASS_FOR_FUNCTION, descriptor);
117 }
118
119 @NotNull
120 public static Type asmTypeForAnonymousClass(@NotNull BindingContext bindingContext, @NotNull JetElement expression) {
121 if (expression instanceof JetObjectLiteralExpression) {
122 JetObjectLiteralExpression jetObjectLiteralExpression = (JetObjectLiteralExpression) expression;
123 expression = jetObjectLiteralExpression.getObjectDeclaration();
124 }
125
126 ClassDescriptor descriptor = bindingContext.get(CLASS, expression);
127 if (descriptor == null) {
128 SimpleFunctionDescriptor functionDescriptor = bindingContext.get(FUNCTION, expression);
129 assert functionDescriptor != null;
130 return asmTypeForAnonymousClass(bindingContext, functionDescriptor);
131 }
132
133 return getAsmType(bindingContext, descriptor);
134 }
135
136 @NotNull
137 public static Type asmTypeForAnonymousClass(@NotNull BindingContext bindingContext, @NotNull FunctionDescriptor descriptor) {
138 return getAsmType(bindingContext, anonymousClassForFunction(bindingContext, descriptor));
139 }
140
141 // SCRIPT: register asmType for script descriptor, move to ScriptingUtil
142 public static void registerClassNameForScript(
143 BindingTrace bindingTrace,
144 @NotNull ScriptDescriptor scriptDescriptor,
145 @NotNull Type asmType
146 ) {
147 ClassDescriptorImpl classDescriptor =
148 new ClassDescriptorImpl(scriptDescriptor, Name.special("<script-" + asmType.getInternalName() + ">"), Modality.FINAL,
149 Collections.singleton(KotlinBuiltIns.getInstance().getAnyType()), SourceElement.NO_SOURCE);
150 classDescriptor.initialize(JetScope.EMPTY, Collections.<ConstructorDescriptor>emptySet(), null);
151
152 recordClosure(bindingTrace, null, classDescriptor, null, asmType);
153
154 bindingTrace.record(CLASS_FOR_SCRIPT, scriptDescriptor, classDescriptor);
155 }
156
157 public static boolean canHaveOuter(@NotNull BindingContext bindingContext, @NotNull ClassDescriptor classDescriptor) {
158 if (classDescriptor.getKind() != ClassKind.CLASS) {
159 return false;
160 }
161
162 MutableClosure closure = bindingContext.get(CLOSURE, classDescriptor);
163 if (closure == null || closure.getEnclosingClass() == null) {
164 return false;
165 }
166
167 return classDescriptor.isInner() || !(classDescriptor.getContainingDeclaration() instanceof ClassDescriptor);
168 }
169
170 static void recordClosure(
171 @NotNull BindingTrace bindingTrace,
172 @Nullable JetElement element,
173 @NotNull ClassDescriptor classDescriptor,
174 @Nullable ClassDescriptor enclosing,
175 @NotNull Type asmType
176 ) {
177 ResolvedCall<ConstructorDescriptor> superCall = findSuperCall(bindingTrace.getBindingContext(), element);
178
179 CallableDescriptor enclosingReceiver = null;
180 if (classDescriptor.getContainingDeclaration() instanceof CallableDescriptor) {
181 enclosingReceiver = (CallableDescriptor) classDescriptor.getContainingDeclaration();
182 enclosingReceiver = enclosingReceiver instanceof PropertyAccessorDescriptor
183 ? ((PropertyAccessorDescriptor) enclosingReceiver).getCorrespondingProperty()
184 : enclosingReceiver;
185
186 if (enclosingReceiver.getReceiverParameter() == null) {
187 enclosingReceiver = null;
188 }
189 }
190
191 MutableClosure closure = new MutableClosure(superCall, enclosing, enclosingReceiver);
192
193 assert PsiCodegenPredictor.checkPredictedNameFromPsi(classDescriptor, asmType);
194 bindingTrace.record(ASM_TYPE, classDescriptor, asmType);
195 bindingTrace.record(CLOSURE, classDescriptor, closure);
196
197 if (classDescriptor.isInner()) {
198 closure.setCaptureThis();
199 }
200
201 //TEMPORARY EAT INNER CLASS INFO FOR FUNCTION LITERALS
202 //TODO: we should understand that lambda/closure would be inlined and don't generate inner class record
203 if (enclosing != null && !(element instanceof JetFunctionLiteral)) {
204 recordInnerClass(bindingTrace, enclosing, classDescriptor);
205 }
206 }
207
208 private static void recordInnerClass(
209 @NotNull BindingTrace bindingTrace,
210 @NotNull ClassDescriptor outer,
211 @NotNull ClassDescriptor inner
212 ) {
213 Collection<ClassDescriptor> innerClasses = bindingTrace.get(INNER_CLASSES, outer);
214 if (innerClasses == null) {
215 innerClasses = new ArrayList<ClassDescriptor>();
216 bindingTrace.record(INNER_CLASSES, outer, innerClasses);
217 }
218 innerClasses.add(inner);
219 }
220
221 // SCRIPT: register asmType for script, move to ScriptingUtil
222 public static void registerClassNameForScript(
223 BindingTrace bindingTrace,
224 @NotNull JetScript jetScript,
225 @NotNull Type asmType
226 ) {
227 ScriptDescriptor descriptor = bindingTrace.getBindingContext().get(SCRIPT, jetScript);
228 if (descriptor == null) {
229 throw new IllegalStateException("Descriptor is not found for PSI " + jetScript);
230 }
231 registerClassNameForScript(bindingTrace, descriptor, asmType);
232 }
233
234 @NotNull
235 private static Collection<JetFile> allFilesInPackages(BindingContext bindingContext, Collection<JetFile> files) {
236 // todo: we use Set and add given files but ignoring other scripts because something non-clear kept in binding
237 // for scripts especially in case of REPL
238
239 // SCRIPT: collect fq names for files that are not scripts
240 HashSet<FqName> names = new HashSet<FqName>();
241 for (JetFile file : files) {
242 if (!file.isScript()) {
243 names.add(file.getPackageFqName());
244 }
245 }
246
247 HashSet<JetFile> answer = new HashSet<JetFile>();
248 answer.addAll(files);
249
250 for (FqName name : names) {
251 Collection<JetFile> jetFiles = bindingContext.get(PACKAGE_TO_FILES, name);
252 if (jetFiles != null) {
253 answer.addAll(jetFiles);
254 }
255 }
256
257 List<JetFile> sortedAnswer = new ArrayList<JetFile>(answer);
258 Collections.sort(sortedAnswer, new Comparator<JetFile>() {
259 @NotNull
260 private String path(JetFile file) {
261 VirtualFile virtualFile = file.getVirtualFile();
262 assert virtualFile != null : "VirtualFile is null for JetFile: " + file.getName();
263 return virtualFile.getPath();
264 }
265
266 @Override
267 public int compare(@NotNull JetFile first, @NotNull JetFile second) {
268 return path(first).compareTo(path(second));
269 }
270 });
271
272 return sortedAnswer;
273 }
274
275 public static boolean isLocalNamedFun(@Nullable DeclarationDescriptor fd) {
276 return isLocalFunOrLambda(fd) && !fd.getName().isSpecial();
277 }
278
279 /*named or not*/
280 public static boolean isLocalFunOrLambda(@Nullable DeclarationDescriptor fd) {
281 if (fd instanceof FunctionDescriptor) {
282 FunctionDescriptor descriptor = (FunctionDescriptor) fd;
283 return descriptor.getVisibility() == Visibilities.LOCAL;
284 }
285 return false;
286 }
287
288 @NotNull
289 public static Type getAsmType(@NotNull BindingContext bindingContext, @NotNull ClassDescriptor klass) {
290 klass = (ClassDescriptor) klass.getOriginal();
291 Type alreadyComputedType = bindingContext.get(ASM_TYPE, klass);
292 if (alreadyComputedType != null) {
293 return alreadyComputedType;
294 }
295
296 Type asmType = Type.getObjectType(getAsmTypeImpl(bindingContext, klass));
297 assert PsiCodegenPredictor.checkPredictedNameFromPsi(klass, asmType);
298 return asmType;
299 }
300
301 @NotNull
302 private static String getAsmTypeImpl(@NotNull BindingContext bindingContext, @NotNull ClassDescriptor klass) {
303 DeclarationDescriptor container = klass.getContainingDeclaration();
304
305 Name name = SpecialNames.safeIdentifier(klass.getName());
306 if (container instanceof PackageFragmentDescriptor) {
307 String shortName = name.getIdentifier();
308 FqName fqName = ((PackageFragmentDescriptor) container).getFqName();
309 return fqName.isRoot() ? shortName : fqName.asString().replace('.', '/') + '/' + shortName;
310 }
311
312 assert container instanceof ClassDescriptor : "Unexpected container: " + container + " for " + klass;
313
314 String containerInternalName = getAsmType(bindingContext, (ClassDescriptor) container).getInternalName();
315 switch (klass.getKind()) {
316 case ENUM_ENTRY:
317 return containerInternalName;
318 case CLASS_OBJECT:
319 return containerInternalName + JvmAbi.CLASS_OBJECT_SUFFIX;
320 default:
321 return containerInternalName + "$" + name.getIdentifier();
322 }
323 }
324
325 @Nullable
326 private static ResolvedCall<ConstructorDescriptor> findSuperCall(
327 @NotNull BindingContext bindingContext,
328 @Nullable JetElement classOrObject
329 ) {
330 if (!(classOrObject instanceof JetClassOrObject)) {
331 return null;
332 }
333
334 if (classOrObject instanceof JetClass && ((JetClass) classOrObject).isTrait()) {
335 return null;
336 }
337
338 for (JetDelegationSpecifier specifier : ((JetClassOrObject) classOrObject).getDelegationSpecifiers()) {
339 if (specifier instanceof JetDelegatorToSuperCall) {
340 JetType supertype = bindingContext.get(TYPE, specifier.getTypeReference());
341 assert supertype != null : String.format(
342 "No type in binding context for \n---\n%s\n---\n", JetPsiUtil.getElementTextWithContext(specifier));
343
344 ClassifierDescriptor superClass = supertype.getConstructor().getDeclarationDescriptor();
345 if (superClass != null && !isInterface(superClass)) {
346 ResolvedCall<?> resolvedCall = getResolvedCall(specifier, bindingContext);
347 if (resolvedCall != null && resolvedCall.getResultingDescriptor() instanceof ConstructorDescriptor) {
348 //noinspection unchecked
349 return (ResolvedCall<ConstructorDescriptor>) resolvedCall;
350 }
351 }
352 }
353 }
354
355 return null;
356 }
357
358 @NotNull
359 public static Collection<ClassDescriptor> getAllInnerClasses(
360 @NotNull BindingContext bindingContext, @NotNull ClassDescriptor outermostClass
361 ) {
362 Collection<ClassDescriptor> innerClasses = bindingContext.get(INNER_CLASSES, outermostClass);
363 if (innerClasses == null || innerClasses.isEmpty()) return Collections.emptySet();
364
365 Set<ClassDescriptor> allInnerClasses = new HashSet<ClassDescriptor>();
366
367 Deque<ClassDescriptor> stack = new ArrayDeque<ClassDescriptor>(innerClasses);
368 do {
369 ClassDescriptor currentClass = stack.pop();
370 if (allInnerClasses.add(currentClass)) {
371 Collection<ClassDescriptor> nextClasses = bindingContext.get(INNER_CLASSES, currentClass);
372 if (nextClasses != null) {
373 for (ClassDescriptor nextClass : nextClasses) {
374 stack.push(nextClass);
375 }
376 }
377 }
378 } while (!stack.isEmpty());
379
380 return allInnerClasses;
381 }
382
383 @NotNull
384 public static String getJvmInternalName(@NotNull BindingContext bindingContext, @NotNull ClassDescriptor classDescriptor) {
385 return getAsmType(bindingContext, classDescriptor).getClassName();
386 }
387 }