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LookupEnvironment.java
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LookupEnvironment.java
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/*******************************************************************************
* Copyright (c) 2000, 2020 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - contributions for
* bug 337868 - [compiler][model] incomplete support for package-info.java when using SearchableEnvironment
* bug 186342 - [compiler][null] Using annotations for null checking
* bug 365531 - [compiler][null] investigate alternative strategy for internally encoding nullness defaults
* bug 392099 - [1.8][compiler][null] Apply null annotation on types for null analysis
* bug 392862 - [1.8][compiler][null] Evaluate null annotations on array types
* bug 392384 - [1.8][compiler][null] Restore nullness info from type annotations in class files
* Bug 392099 - [1.8][compiler][null] Apply null annotation on types for null analysis
* Bug 415291 - [1.8][null] differentiate type incompatibilities due to null annotations
* Bug 392238 - [1.8][compiler][null] Detect semantically invalid null type annotations
* Bug 415850 - [1.8] Ensure RunJDTCoreTests can cope with null annotations enabled
* Bug 415043 - [1.8][null] Follow-up re null type annotations after bug 392099
* Bug 416183 - [1.8][compiler][null] Overload resolution fails with null annotations
* Bug 416307 - [1.8][compiler][null] subclass with type parameter substitution confuses null checking
* Bug 417295 - [1.8[[null] Massage type annotated null analysis to gel well with deep encoded type bindings.
* Bug 416190 - [1.8][null] detect incompatible overrides due to null type annotations
* Bug 424624 - [1.8][null] if a static-object with annotation @NonNull is used, a warning is shown
* Bug 438458 - [1.8][null] clean up handling of null type annotations wrt type variables
* Bug 439516 - [1.8][null] NonNullByDefault wrongly applied to implicit type bound of binary type
* Bug 434602 - Possible error with inferred null annotations leading to contradictory null annotations
* Bug 435805 - [1.8][compiler][null] Java 8 compiler does not recognize declaration style null annotations
* Bug 453475 - [1.8][null] Contradictory null annotations (4.5 M3 edition)
* Bug 457079 - Regression: type inference
* Bug 440477 - [null] Infrastructure for feeding external annotations into compilation
* Bug 455180 - IllegalStateException in AnnotatableTypeSystem.getRawType
* Bug 470467 - [null] Nullness of special Enum methods not detected from .class file
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.lookup;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.ClassFile;
import org.eclipse.jdt.internal.compiler.ClassFilePool;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Wildcard;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.env.*;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.compiler.impl.ITypeRequestor;
import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;
import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
import org.eclipse.jdt.internal.compiler.util.HashtableOfModule;
import org.eclipse.jdt.internal.compiler.util.HashtableOfPackage;
import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
@SuppressWarnings({"rawtypes", "unchecked"})
public class LookupEnvironment implements ProblemReasons, TypeConstants {
/**
* Map from typeBinding -> accessRestriction rule
*/
private Map accessRestrictions;
ImportBinding[] defaultImports; // ROOT_ONLY
/**
* The root environment driving the current compilation.
* Other mutable fields in this class marked as ROOT_ONLY must always be accessed from the root environment.
* It is assumed that external clients only know the root environment, whereas calls internally in the compiler
* have to delegate to root where necessary.
* Immutable fields with "global" semantics are SHARED among environments via aliasing.
*/
public final LookupEnvironment root;
public ModuleBinding UnNamedModule;
public ModuleBinding JavaBaseModule;
public ModuleBinding module;
public PlainPackageBinding defaultPackage;
/** All visible toplevel packages, i.e. observable packages associated with modules read by the current module. */
HashtableOfPackage<PackageBinding> knownPackages;
private int lastCompletedUnitIndex = -1; // ROOT_ONLY
private int lastUnitIndex = -1; // ROOT_ONLY
TypeSystem typeSystem; // SHARED
public INameEnvironment nameEnvironment; // SHARED
public CompilerOptions globalOptions; // SHARED
public ProblemReporter problemReporter; // SHARED
public ClassFilePool classFilePool; // SHARED
// indicate in which step on the compilation we are.
private CompleteTypeBindingsSteps stepCompleted = CompleteTypeBindingsSteps.NONE; // ROOT_ONLY
public ITypeRequestor typeRequestor; // SHARED
private SimpleLookupTable uniqueParameterizedGenericMethodBindings;
// key is a string with the method selector value is an array of method bindings
private SimpleLookupTable uniquePolymorphicMethodBindings;
private SimpleLookupTable uniqueGetClassMethodBinding; // https://bugs.eclipse.org/bugs/show_bug.cgi?id=300734
boolean useModuleSystem; // true when compliance >= 9 and nameEnvironment is module aware
// key is a string with the module name value is a module binding
public HashtableOfModule knownModules; // SHARED
public CompilationUnitDeclaration unitBeingCompleted = null; // only set while completing units -- ROOT_ONLY
public Object missingClassFileLocation = null; // only set when resolving certain references, to help locating problems
private CompilationUnitDeclaration[] units = new CompilationUnitDeclaration[4]; // ROOT_ONLY
private MethodVerifier verifier;
private ArrayList missingTypes;
Set<SourceTypeBinding> typesBeingConnected; // SHARED
public boolean isProcessingAnnotations = false; // ROOT_ONLY
public boolean mayTolerateMissingType = false;
PackageBinding nullableAnnotationPackage; // the package supposed to contain the Nullable annotation type
PackageBinding nonnullAnnotationPackage; // the package supposed to contain the NonNull annotation type
PackageBinding nonnullByDefaultAnnotationPackage; // the package supposed to contain the NonNullByDefault annotation type
AnnotationBinding nonNullAnnotation;
AnnotationBinding nullableAnnotation;
AnnotationBinding owningAnnotation;
AnnotationBinding notOwningAnnotation;
Map<String,Integer> allAnalysisAnnotations = null;
final List<MethodBinding> deferredEnumMethods; // SHARED: during early initialization we cannot mark Enum-methods as nonnull.
/** Global access to the outermost active inference context as the universe for inference variable interning. */
InferenceContext18 currentInferenceContext;
/**
* Flag that should be set during annotation traversal or similar runs
* to prevent caching of failures regarding imports of yet to be generated classes.
*/
public boolean suppressImportErrors; // per module
/** type that is driving current lookup attempts. */
public ReferenceBinding requestingType;
public String moduleVersion; // ROOT_ONLY
static enum CompleteTypeBindingsSteps {
NONE,
CHECK_AND_SET_IMPORTS,
CONNECT_TYPE_HIERARCHY,
BUILD_FIELDS_AND_METHODS,
INTEGRATE_ANNOTATIONS_IN_HIERARCHY,
CHECK_PARAMETERIZED_TYPES;
/** Answer the next step in sequence or {@code this} when we are at the last step already. */
CompleteTypeBindingsSteps next() {
CompleteTypeBindingsSteps[] values = values();
int nextOrdinal = ordinal() + 1;
if (nextOrdinal < values.length)
return values[nextOrdinal];
return this; // no-change to signal "at end"
}
/** values without NONE */
static final CompleteTypeBindingsSteps[] realValues = Arrays.copyOfRange(values(), 1, values().length-1);
void perform(CompilationUnitScope scope) {
switch (this) {
case CHECK_AND_SET_IMPORTS -> scope.checkAndSetImports();
case CONNECT_TYPE_HIERARCHY -> scope.connectTypeHierarchy();
case BUILD_FIELDS_AND_METHODS -> scope.buildFieldsAndMethods();
case INTEGRATE_ANNOTATIONS_IN_HIERARCHY -> scope.integrateAnnotationsInHierarchy();
case CHECK_PARAMETERIZED_TYPES -> scope.checkParameterizedTypes();
default -> throw new IllegalArgumentException("No implementation for: " + this); //$NON-NLS-1$
}
}
}
static final ProblemPackageBinding TheNotFoundPackage = new ProblemPackageBinding(CharOperation.NO_CHAR, NotFound, null/*not perfect*/);
static final ProblemReferenceBinding TheNotFoundType = new ProblemReferenceBinding(CharOperation.NO_CHAR_CHAR, null, NotFound);
static final ModuleBinding TheNotFoundModule = new ModuleBinding(CharOperation.NO_CHAR);
/** Construct the root LookupEnvironment, corresponding to the UnNamedModule. */
public LookupEnvironment(ITypeRequestor typeRequestor, CompilerOptions globalOptions, ProblemReporter problemReporter, INameEnvironment nameEnvironment) {
this.root = this;
this.UnNamedModule = new ModuleBinding.UnNamedModule(this);
this.module = this.UnNamedModule;
this.typeRequestor = typeRequestor;
this.globalOptions = globalOptions;
this.problemReporter = problemReporter;
this.defaultPackage = new PlainPackageBinding(this); // assume the default package always exists
this.defaultImports = null;
this.nameEnvironment = nameEnvironment;
this.knownPackages = new HashtableOfPackage();
this.uniqueParameterizedGenericMethodBindings = new SimpleLookupTable(3);
this.uniquePolymorphicMethodBindings = new SimpleLookupTable(3);
this.missingTypes = null;
this.accessRestrictions = new HashMap(3);
this.classFilePool = ClassFilePool.newInstance();
this.typesBeingConnected = new LinkedHashSet<>();
this.deferredEnumMethods = new ArrayList<>();
this.typeSystem = this.globalOptions.sourceLevel >= ClassFileConstants.JDK1_8 && this.globalOptions.storeAnnotations ? new AnnotatableTypeSystem(this) : new TypeSystem(this);
this.knownModules = new HashtableOfModule();
this.useModuleSystem = nameEnvironment instanceof IModuleAwareNameEnvironment && globalOptions.complianceLevel >= ClassFileConstants.JDK9;
this.resolutionListeners = new IQualifiedTypeResolutionListener[0];
}
/** Construct a specific LookupEnvironment, corresponding to the given module. */
LookupEnvironment(LookupEnvironment rootEnv, ModuleBinding module) {
this.root = rootEnv;
this.UnNamedModule = rootEnv.UnNamedModule;
this.module = module;
this.typeRequestor = rootEnv.typeRequestor;
this.globalOptions = rootEnv.globalOptions;
this.problemReporter = rootEnv.problemReporter;
this.defaultPackage = new PlainPackageBinding(this); // assume the default package always exists
this.defaultImports = null;
this.nameEnvironment = rootEnv.nameEnvironment;
this.knownPackages = new HashtableOfPackage();
this.uniqueParameterizedGenericMethodBindings = new SimpleLookupTable(3);
this.uniquePolymorphicMethodBindings = new SimpleLookupTable(3);
this.missingTypes = null;
this.accessRestrictions = new HashMap(3);
this.classFilePool = rootEnv.classFilePool;
this.typesBeingConnected = rootEnv.typesBeingConnected;
this.deferredEnumMethods = rootEnv.deferredEnumMethods;
this.typeSystem = rootEnv.typeSystem;
// knownModules is unused in specific LookupEnvironments
this.useModuleSystem = rootEnv.useModuleSystem;
}
// NOTE: only for resolving!
public ModuleBinding getModule(char[] name) {
if (this.root != this)
return this.root.getModule(name);
if (name == null || name == ModuleBinding.UNNAMED || CharOperation.equals(name, ModuleBinding.ALL_UNNAMED))
return this.UnNamedModule;
ModuleBinding moduleBinding = this.knownModules.get(name);
if (moduleBinding == null) {
if (this.useModuleSystem) {
IModule mod = ((IModuleAwareNameEnvironment) this.nameEnvironment).getModule(name);
if (mod != null) {
this.typeRequestor.accept(mod, this);
moduleBinding = this.root.knownModules.get(name);
}
} else
return this.UnNamedModule;
}
return moduleBinding;
}
/**
* Ask the name environment for a type which corresponds to the compoundName.
* Answer null if the name cannot be found.
*/
public ReferenceBinding askForType(char[][] compoundName, /*@NonNull*/ModuleBinding clientModule) {
assert clientModule != null : "lookup needs a module"; //$NON-NLS-1$
NameEnvironmentAnswer[] answers = null;
if (this.useModuleSystem) {
IModuleAwareNameEnvironment moduleEnv = (IModuleAwareNameEnvironment) this.nameEnvironment;
answers = askForTypeFromModules(clientModule, clientModule.getAllRequiredModules(),
mod -> moduleEnv.findType(compoundName, mod.nameForLookup()));
} else {
NameEnvironmentAnswer answer = this.nameEnvironment.findType(compoundName);
if (answer != null) {
answer.moduleBinding = this.module;
answers = new NameEnvironmentAnswer[] { answer };
}
}
if (answers == null)
return null;
ReferenceBinding candidate = null;
for (NameEnvironmentAnswer answer : answers) {
if (answer == null) continue;
ModuleBinding answerModule = answer.moduleBinding != null ? answer.moduleBinding : this.UnNamedModule;
if (answer.isBinaryType()) {
// the type was found as a .class file
PackageBinding pkg = answerModule.environment.computePackageFrom(compoundName, false /* valid pkg */);
this.typeRequestor.accept(answer.getBinaryType(), pkg, answer.getAccessRestriction());
ReferenceBinding binding = pkg.getType0(compoundName[compoundName.length - 1]);
if (binding instanceof BinaryTypeBinding) {
((BinaryTypeBinding) binding).module = answerModule;
if (pkg.enclosingModule == null)
pkg.enclosingModule = answerModule;
}
} else if (answer.isCompilationUnit()) {
// the type was found as a .java file, try to build it then search the cache
this.typeRequestor.accept(answer.getCompilationUnit(), answer.getAccessRestriction());
} else if (answer.isSourceType()) {
// the type was found as a source model
PackageBinding pkg = answerModule.environment.computePackageFrom(compoundName, false /* valid pkg */);
this.typeRequestor.accept(answer.getSourceTypes(), pkg, answer.getAccessRestriction());
ReferenceBinding binding = pkg.getType0(compoundName[compoundName.length - 1]);
if (binding instanceof SourceTypeBinding) {
((SourceTypeBinding) binding).module = answerModule;
if (pkg.enclosingModule == null)
pkg.enclosingModule = answerModule;
}
}
candidate = combine(candidate, answerModule.environment.getCachedType(compoundName), clientModule);
}
return candidate;
}
/* Ask the oracle for a type named name in the packageBinding.
* Answer null if the name cannot be found.
*/
ReferenceBinding askForType(PackageBinding packageBinding, char[] name, ModuleBinding clientModule) {
assert clientModule != null : "lookup needs a module"; //$NON-NLS-1$
if (packageBinding == null) {
packageBinding = this.defaultPackage;
}
NameEnvironmentAnswer[] answers = null;
if (this.useModuleSystem) {
IModuleAwareNameEnvironment moduleEnv = (IModuleAwareNameEnvironment) this.nameEnvironment;
final PackageBinding pack = packageBinding;
// leverage module information from the (split?) package as to prefer NotAccessible over NotFound:
answers = askForTypeFromModules(null, packageBinding.getDeclaringModules(),
mod -> fromSplitPackageOrOracle(moduleEnv, mod, pack, name));
} else {
NameEnvironmentAnswer answer = this.nameEnvironment.findType(name, packageBinding.compoundName);
if (answer != null) {
answer.moduleBinding = this.module;
answers = new NameEnvironmentAnswer[] { answer };
}
}
if (answers == null)
return null;
ReferenceBinding candidate = null;
for (NameEnvironmentAnswer answer : answers) {
if (answer == null) continue;
if (candidate != null && candidate.problemId() == ProblemReasons.Ambiguous)
return candidate; // saw enough
ModuleBinding answerModule = answer.moduleBinding != null ? answer.moduleBinding : this.UnNamedModule;
PackageBinding answerPackage = packageBinding;
if (answerModule != null) {
if (!answerPackage.isDeclaredIn(answerModule))
continue; // this answer is not reachable via the packageBinding
answerPackage = answerPackage.getIncarnation(answerModule);
}
if (answer.isResolvedBinding()) {
candidate = combine(candidate, answer.getResolvedBinding(), clientModule);
continue;
} else if (answer.isBinaryType()) {
// the type was found as a .class file
this.typeRequestor.accept(answer.getBinaryType(), answerPackage, answer.getAccessRestriction());
ReferenceBinding binding = answerPackage.getType0(name);
if (binding instanceof BinaryTypeBinding) {
((BinaryTypeBinding) binding).module = answerModule;
}
} else if (answer.isCompilationUnit()) {
// the type was found as a .java file, try to build it then search the cache
try {
this.typeRequestor.accept(answer.getCompilationUnit(), answer.getAccessRestriction());
} catch (AbortCompilation abort) {
if (CharOperation.equals(name, TypeConstants.PACKAGE_INFO_NAME))
return null; // silently, requestor may not be able to handle compilation units (HierarchyResolver)
throw abort;
}
} else if (answer.isSourceType()) {
// the type was found as a source model
this.typeRequestor.accept(answer.getSourceTypes(), answerPackage, answer.getAccessRestriction());
ReferenceBinding binding = answerPackage.getType0(name);
if (binding instanceof SourceTypeBinding) {
((SourceTypeBinding) binding).module = answerModule;
}
String externalAnnotationPath = answer.getExternalAnnotationPath();
if (externalAnnotationPath != null && this.globalOptions.isAnnotationBasedNullAnalysisEnabled && binding instanceof SourceTypeBinding) {
ExternalAnnotationSuperimposer.apply((SourceTypeBinding) binding, externalAnnotationPath);
}
candidate = combine(candidate, binding, clientModule);
continue;
}
candidate = combine(candidate, answerPackage.getType0(name), clientModule);
}
return candidate;
}
/** Combine up-to two candidate types. If both types are present let accessibility from the given clientModule decide. */
private ReferenceBinding combine(ReferenceBinding one, ReferenceBinding two, ModuleBinding clientModule) {
if (one == null) return two;
if (two == null) return one;
if (one.fPackage == null || !clientModule.canAccess(one.fPackage)) return two;
if (two.fPackage == null || !clientModule.canAccess(two.fPackage)) return one;
if (one == two) return one; //$IDENTITY-COMPARISON$
return new ProblemReferenceBinding(one.compoundName, one, ProblemReasons.Ambiguous); // TODO(SHMOD): use a new problem ID
}
/** Collect answers from the oracle concerning the given clientModule (if present) and each of a set of other modules. */
private NameEnvironmentAnswer[] askForTypeFromModules(ModuleBinding clientModule, ModuleBinding[] otherModules,
Function<ModuleBinding,NameEnvironmentAnswer> oracle)
{
if (clientModule != null && clientModule.nameForLookup().length == 0) {
NameEnvironmentAnswer answer = oracle.apply(clientModule);
if (answer != null)
answer.moduleBinding = this.root.getModuleFromAnswer(answer);
return new NameEnvironmentAnswer[] { answer };
} else {
boolean found = false;
NameEnvironmentAnswer[] answers = null;
if (clientModule != null) {
answers = new NameEnvironmentAnswer[otherModules.length+1];
NameEnvironmentAnswer answer = oracle.apply(clientModule);
if (answer != null) {
answer.moduleBinding = clientModule;
answers[answers.length-1] = answer;
found = true;
}
} else {
answers = new NameEnvironmentAnswer[otherModules.length];
}
for (int i = 0; i < otherModules.length; i++) {
NameEnvironmentAnswer answer = oracle.apply(otherModules[i]);
if (answer != null) {
if (answer.moduleBinding == null) {
char[] nameFromAnswer = answer.moduleName();
if (CharOperation.equals(nameFromAnswer, otherModules[i].moduleName)) {
answer.moduleBinding = otherModules[i];
} else {
answer.moduleBinding = getModule(nameFromAnswer);
}
}
answers[i] = answer;
found = true;
}
}
return found ? answers : null;
}
}
/** First check for a known type in a split package and otherwise ask the oracle. */
private static NameEnvironmentAnswer fromSplitPackageOrOracle(IModuleAwareNameEnvironment moduleEnv, ModuleBinding module,
PackageBinding packageBinding, char[] name)
{
if (packageBinding instanceof SplitPackageBinding) {
// when asking a split package getType0() we may have answered null in case of ambiguity (not knowing the module context).
// now check if the module-incarnation of the package has the type:
// (needed because the moduleEnv will not answer initial types).
ReferenceBinding binding = ((SplitPackageBinding) packageBinding).getType0ForModule(module, name);
if (binding != null && binding.isValidBinding()) {
if (binding instanceof UnresolvedReferenceBinding)
binding = ((UnresolvedReferenceBinding) binding).resolve(module.environment, false);
if (binding.isValidBinding())
return new NameEnvironmentAnswer(binding, module);
}
}
return moduleEnv.findType(name, packageBinding.compoundName, module.nameForLookup());
}
private ModuleBinding getModuleFromAnswer(NameEnvironmentAnswer answer) {
char[] moduleName = answer.moduleName();
if (moduleName != null) {
ModuleBinding moduleBinding;
if (!this.useModuleSystem || moduleName == ModuleBinding.UNNAMED) {
moduleBinding = this.UnNamedModule;
} else {
moduleBinding = this.knownModules.get(moduleName);
if (moduleBinding == null && this.nameEnvironment instanceof IModuleAwareNameEnvironment) {
IModule iModule = ((IModuleAwareNameEnvironment) this.nameEnvironment).getModule(moduleName);
try {
this.typeRequestor.accept(iModule, this);
moduleBinding = this.knownModules.get(moduleName);
} catch (NullPointerException e) {
System.err.println("Bug 529367: moduleName: " + new String(moduleName) + "iModule null" + //$NON-NLS-1$ //$NON-NLS-2$
(iModule == null ? "true" : "false")); //$NON-NLS-1$ //$NON-NLS-2$]
throw e;
}
}
}
return moduleBinding;
}
return null;
}
public boolean canTypeBeAccessed(SourceTypeBinding binding, Scope scope) {
ModuleBinding client = scope.module();
return client.canAccess(binding.fPackage);
}
/* Create the initial type bindings for the compilation unit.
*
* See completeTypeBindings() for a description of the remaining steps
*
* NOTE: This method can be called multiple times as additional source files are needed
*/
public void buildTypeBindings(CompilationUnitDeclaration unit, AccessRestriction accessRestriction) {
CompilationUnitScope scope;
ModuleBinding unitModule = null;
if (unit.moduleDeclaration != null) {
char[] moduleName = unit.moduleDeclaration.moduleName;
scope = new CompilationUnitScope(unit, this.globalOptions);
unitModule = unit.moduleDeclaration.setBinding(new SourceModuleBinding(moduleName, scope, this.root));
} else {
if (this.globalOptions.sourceLevel >= ClassFileConstants.JDK9) {
unitModule = unit.module(this);
}
scope = new CompilationUnitScope(unit, unitModule != null ? unitModule.environment : this);
}
scope.buildTypeBindings(accessRestriction);
LookupEnvironment rootEnv = this.root;
int unitsLength = rootEnv.units.length;
if (++rootEnv.lastUnitIndex >= unitsLength)
System.arraycopy(rootEnv.units, 0, rootEnv.units = new CompilationUnitDeclaration[2 * unitsLength], 0, unitsLength);
rootEnv.units[rootEnv.lastUnitIndex] = unit;
}
/* Cache the binary type since we know it is needed during this compile.
*
* Answer the created BinaryTypeBinding or null if the type is already in the cache.
*/
public BinaryTypeBinding cacheBinaryType(IBinaryType binaryType, AccessRestriction accessRestriction) {
return cacheBinaryType(binaryType, true, accessRestriction);
}
/* Cache the binary type since we know it is needed during this compile.
*
* Answer the created BinaryTypeBinding or null if the type is already in the cache.
*/
public BinaryTypeBinding cacheBinaryType(IBinaryType binaryType, boolean needFieldsAndMethods, AccessRestriction accessRestriction) {
char[][] compoundName = CharOperation.splitOn('/', binaryType.getName());
ReferenceBinding existingType = getCachedType(compoundName);
if (existingType == null || existingType instanceof UnresolvedReferenceBinding)
// only add the binary type if its not already in the cache
return createBinaryTypeFrom(binaryType, computePackageFrom(compoundName, false /* valid pkg */), needFieldsAndMethods, accessRestriction);
return null; // the type already exists & can be retrieved from the cache
}
public void completeTypeBindings() {
if (this != this.root) {
this.root.completeTypeBindings();
return;
}
this.stepCompleted = CompleteTypeBindingsSteps.NONE;
for (CompleteTypeBindingsSteps step : CompleteTypeBindingsSteps.values()) {
CompleteTypeBindingsSteps next = step.next();
for (int i = this.lastCompletedUnitIndex + 1; i <= this.lastUnitIndex; i++) {
if (next != step)
next.perform((this.unitBeingCompleted = this.units[i]).scope);
else
this.units[i] = null; // at last step clean up
}
this.stepCompleted = next;
}
this.lastCompletedUnitIndex = this.lastUnitIndex;
this.unitBeingCompleted = null;
}
/*
* 1. Connect the type hierarchy for the type bindings created for parsedUnits.
* 2. Create the field bindings
* 3. Create the method bindings
*/
/* We know each known compilationUnit is free of errors at this point...
*
* Each step will create additional bindings unless a problem is detected, in which
* case either the faulty import/superinterface/field/method will be skipped or a
* suitable replacement will be substituted (such as Object for a missing superclass)
*/
public void completeTypeBindings(CompilationUnitDeclaration parsedUnit) {
if (this != this.root) {
this.root.completeTypeBindings(parsedUnit);
return;
}
if (this.stepCompleted == this.stepCompleted.next()) {
// This can only happen because the original set of units are completely built and
// are now being processed, so we want to treat all the additional units as a group
// until they too are completely processed.
completeTypeBindings();
} else {
if (parsedUnit.scope == null) return; // parsing errors were too severe
for (CompleteTypeBindingsSteps step : CompleteTypeBindingsSteps.realValues) {
if (this.stepCompleted.compareTo(step) >= 0)
step.perform((this.unitBeingCompleted = parsedUnit).scope);
}
this.unitBeingCompleted = null;
}
}
/*
* Used by other compiler tools which do not start by calling completeTypeBindings().
*
* 1. Connect the type hierarchy for the type bindings created for parsedUnits.
* 2. Create the field bindings
* 3. Create the method bindings
*/
/*
* Each step will create additional bindings unless a problem is detected, in which
* case either the faulty import/superinterface/field/method will be skipped or a
* suitable replacement will be substituted (such as Object for a missing superclass)
*/
public void completeTypeBindings(CompilationUnitDeclaration parsedUnit, boolean buildFieldsAndMethods) {
if (parsedUnit.scope == null) return; // parsing errors were too severe
LookupEnvironment rootEnv = this.root;
CompilationUnitDeclaration previousUnitBeingCompleted = rootEnv.unitBeingCompleted;
for (CompleteTypeBindingsSteps step : CompleteTypeBindingsSteps.realValues) {
if (step != CompleteTypeBindingsSteps.BUILD_FIELDS_AND_METHODS || buildFieldsAndMethods)
step.perform((rootEnv.unitBeingCompleted = parsedUnit).scope);
}
rootEnv.unitBeingCompleted = previousUnitBeingCompleted;
}
/*
* Used by other compiler tools which do not start by calling completeTypeBindings()
* and have more than 1 unit to complete.
*
* 1. Connect the type hierarchy for the type bindings created for parsedUnits.
* 2. Create the field bindings
* 3. Create the method bindings
*/
public void completeTypeBindings(CompilationUnitDeclaration[] parsedUnits, boolean[] buildFieldsAndMethods, int unitCount) {
LookupEnvironment rootEnv = this.root;
for (CompleteTypeBindingsSteps step : CompleteTypeBindingsSteps.realValues) {
for (int i = 0; i < unitCount; i++) {
CompilationUnitDeclaration parsedUnit = parsedUnits[i];
if (parsedUnit.scope != null)
if (step != CompleteTypeBindingsSteps.BUILD_FIELDS_AND_METHODS || buildFieldsAndMethods[i]) {
step.perform((rootEnv.unitBeingCompleted = parsedUnit).scope);
}
}
}
rootEnv.unitBeingCompleted = null;
}
public TypeBinding computeBoxingType(TypeBinding type) {
TypeBinding boxedType;
switch (type.id) {
case TypeIds.T_JavaLangBoolean :
return TypeBinding.BOOLEAN;
case TypeIds.T_JavaLangByte :
return TypeBinding.BYTE;
case TypeIds.T_JavaLangCharacter :
return TypeBinding.CHAR;
case TypeIds.T_JavaLangShort :
return TypeBinding.SHORT;
case TypeIds.T_JavaLangDouble :
return TypeBinding.DOUBLE;
case TypeIds.T_JavaLangFloat :
return TypeBinding.FLOAT;
case TypeIds.T_JavaLangInteger :
return TypeBinding.INT;
case TypeIds.T_JavaLangLong :
return TypeBinding.LONG;
case TypeIds.T_int :
boxedType = getType(JAVA_LANG_INTEGER, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_INTEGER, null, NotFound);
case TypeIds.T_byte :
boxedType = getType(JAVA_LANG_BYTE, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_BYTE, null, NotFound);
case TypeIds.T_short :
boxedType = getType(JAVA_LANG_SHORT, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_SHORT, null, NotFound);
case TypeIds.T_char :
boxedType = getType(JAVA_LANG_CHARACTER, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_CHARACTER, null, NotFound);
case TypeIds.T_long :
boxedType = getType(JAVA_LANG_LONG, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_LONG, null, NotFound);
case TypeIds.T_float :
boxedType = getType(JAVA_LANG_FLOAT, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_FLOAT, null, NotFound);
case TypeIds.T_double :
boxedType = getType(JAVA_LANG_DOUBLE, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_DOUBLE, null, NotFound);
case TypeIds.T_boolean :
boxedType = getType(JAVA_LANG_BOOLEAN, javaBaseModule());
if (boxedType != null) return boxedType;
return new ProblemReferenceBinding(JAVA_LANG_BOOLEAN, null, NotFound);
// case TypeIds.T_int :
// return getResolvedType(JAVA_LANG_INTEGER, null);
// case TypeIds.T_byte :
// return getResolvedType(JAVA_LANG_BYTE, null);
// case TypeIds.T_short :
// return getResolvedType(JAVA_LANG_SHORT, null);
// case TypeIds.T_char :
// return getResolvedType(JAVA_LANG_CHARACTER, null);
// case TypeIds.T_long :
// return getResolvedType(JAVA_LANG_LONG, null);
// case TypeIds.T_float :
// return getResolvedType(JAVA_LANG_FLOAT, null);
// case TypeIds.T_double :
// return getResolvedType(JAVA_LANG_DOUBLE, null);
// case TypeIds.T_boolean :
// return getResolvedType(JAVA_LANG_BOOLEAN, null);
}
// allow indirect unboxing conversion for wildcards and type parameters
switch (type.kind()) {
case Binding.WILDCARD_TYPE :
case Binding.INTERSECTION_TYPE :
case Binding.TYPE_PARAMETER :
case Binding.INTERSECTION_TYPE18:
switch (type.erasure().id) {
case TypeIds.T_JavaLangBoolean :
return TypeBinding.BOOLEAN;
case TypeIds.T_JavaLangByte :
return TypeBinding.BYTE;
case TypeIds.T_JavaLangCharacter :
return TypeBinding.CHAR;
case TypeIds.T_JavaLangShort :
return TypeBinding.SHORT;
case TypeIds.T_JavaLangDouble :
return TypeBinding.DOUBLE;
case TypeIds.T_JavaLangFloat :
return TypeBinding.FLOAT;
case TypeIds.T_JavaLangInteger :
return TypeBinding.INT;
case TypeIds.T_JavaLangLong :
return TypeBinding.LONG;
}
break;
case Binding.POLY_TYPE:
return ((PolyTypeBinding) type).computeBoxingType();
}
return type;
}
public ModuleBinding javaBaseModule() {
if (this.JavaBaseModule != null)
return this.JavaBaseModule;
if (this.root != this)
return this.JavaBaseModule = this.root.javaBaseModule();
ModuleBinding resolvedModel = null;
if (this.useModuleSystem)
resolvedModel = getModule(TypeConstants.JAVA_BASE);
return this.JavaBaseModule = (resolvedModel != null ? resolvedModel : this.UnNamedModule); // fall back to pre-Jigsaw view
}
private PackageBinding computePackageFrom(char[][] constantPoolName, boolean isMissing) {
if (constantPoolName.length == 1)
return this.defaultPackage;
PackageBinding packageBinding = getPackage0(constantPoolName[0]);
if (packageBinding == null || packageBinding == TheNotFoundPackage) {
if (this.useModuleSystem) {
if (this.module.isUnnamed()) {
char[][] declaringModules = ((IModuleAwareNameEnvironment) this.nameEnvironment).getUniqueModulesDeclaringPackage(new char[][] {constantPoolName[0]}, ModuleBinding.ANY);
if (declaringModules != null) {
for (char[] mod : declaringModules) {
ModuleBinding declaringModule = this.root.getModule(mod);
if (declaringModule != null)
packageBinding = SplitPackageBinding.combine(declaringModule.getTopLevelPackage(constantPoolName[0]), packageBinding, this.module);
}
}
} else {
packageBinding = this.module.getTopLevelPackage(constantPoolName[0]);
}
}
if (packageBinding == null || packageBinding == TheNotFoundPackage) {
packageBinding = this.module.createDeclaredToplevelPackage(constantPoolName[0]);
}
if (isMissing) packageBinding.tagBits |= TagBits.HasMissingType;
this.knownPackages.put(constantPoolName[0], packageBinding); // TODO: split?
}
for (int i = 1, length = constantPoolName.length - 1; i < length; i++) {
PackageBinding parent = packageBinding;
if ((packageBinding = parent.getPackage0(constantPoolName[i])) == null || packageBinding == TheNotFoundPackage) {
if (this.useModuleSystem) {
if (this.module.isUnnamed()) {
char[][] currentCompoundName = CharOperation.arrayConcat(parent.compoundName, constantPoolName[i]);
char[][] declaringModules = ((IModuleAwareNameEnvironment) this.nameEnvironment).getModulesDeclaringPackage(
currentCompoundName, ModuleBinding.ANY);
if (declaringModules != null) {
for (char[] mod : declaringModules) {
ModuleBinding declaringModule = this.root.getModule(mod);
if (declaringModule != null)
packageBinding = SplitPackageBinding.combine(declaringModule.getVisiblePackage(currentCompoundName), packageBinding, this.module);
}
}
} else {
packageBinding = this.module.getVisiblePackage(parent, constantPoolName[i]);
}
}
if (packageBinding == null || packageBinding == TheNotFoundPackage) {
packageBinding = this.module.createDeclaredPackage(CharOperation.subarray(constantPoolName, 0, i + 1), parent);
}
if (isMissing) {
packageBinding.tagBits |= TagBits.HasMissingType;
}
packageBinding = parent.addPackage(packageBinding, this.module);
}
}
if (packageBinding instanceof SplitPackageBinding) {
PackageBinding candidate = null;
// select from incarnations the unique package containing CUs, if any:
for (PackageBinding incarnation : ((SplitPackageBinding) packageBinding).incarnations) {
if (incarnation.hasCompilationUnit(false)) {
if (candidate != null) {
candidate = null;
break; // likely to report "accessible from more than one module" downstream
}
candidate = incarnation;
}
}
if (candidate != null)
return candidate;
}
return packageBinding;
}
/**
* Convert a given source type into a parameterized form if generic.
* generic {@code @X<E> --> param X<E>}
*/
public ReferenceBinding convertToParameterizedType(ReferenceBinding originalType) {
if (originalType != null) {
boolean isGeneric = originalType.isGenericType();
if (!isGeneric && !originalType.hasEnclosingInstanceContext())
return originalType;
ReferenceBinding originalEnclosingType = originalType.enclosingType();
ReferenceBinding convertedEnclosingType = originalEnclosingType;
boolean needToConvert = isGeneric;
if (originalEnclosingType != null && originalType.hasEnclosingInstanceContext()) {
convertedEnclosingType = convertToParameterizedType(originalEnclosingType);
needToConvert |= TypeBinding.notEquals(originalEnclosingType, convertedEnclosingType);
}
if (needToConvert) {
return createParameterizedType(originalType, isGeneric ? originalType.typeVariables() : null, convertedEnclosingType);
}
}
return originalType;
}
/**
* Returns the given binding's raw type binding.
* @param type the TypeBinding to raw convert
* @param forceRawEnclosingType forces recursive raw conversion of enclosing types (used in Javadoc references only)
* @return TypeBinding the raw converted TypeBinding
*/
public TypeBinding convertToRawType(TypeBinding type, boolean forceRawEnclosingType) {
int dimension;
TypeBinding originalType;
switch(type.kind()) {
case Binding.BASE_TYPE :
case Binding.TYPE_PARAMETER:
case Binding.WILDCARD_TYPE:
case Binding.INTERSECTION_TYPE:
case Binding.RAW_TYPE:
return type;
case Binding.ARRAY_TYPE:
dimension = type.dimensions();
originalType = type.leafComponentType();
break;
default:
if (type.id == TypeIds.T_JavaLangObject)
return type; // Object is not generic
dimension = 0;
originalType = type;
}
boolean needToConvert;
switch (originalType.kind()) {
case Binding.BASE_TYPE :
return type;
case Binding.GENERIC_TYPE :
needToConvert = true;
break;
case Binding.PARAMETERIZED_TYPE :
ParameterizedTypeBinding paramType = (ParameterizedTypeBinding) originalType;
needToConvert = paramType.genericType().isGenericType(); // only recursive call to enclosing type can find parameterizedType with arguments
break;
default :
needToConvert = false;
break;
}
forceRawEnclosingType &= !originalType.isStatic();
ReferenceBinding originalEnclosing = originalType.enclosingType();
TypeBinding convertedType;
if (originalEnclosing == null) {
convertedType = needToConvert ? createRawType((ReferenceBinding)originalType.erasure(), null) : originalType;
} else {
ReferenceBinding convertedEnclosing;
if (!((ReferenceBinding)originalType).hasEnclosingInstanceContext()) {
convertedEnclosing = (ReferenceBinding) originalEnclosing.original();
} else {
if (originalEnclosing.kind() == Binding.RAW_TYPE) {
convertedEnclosing = originalEnclosing;
needToConvert = true;
} else if (forceRawEnclosingType && !needToConvert/*stop recursion when conversion occurs*/) {
convertedEnclosing = (ReferenceBinding) convertToRawType(originalEnclosing, forceRawEnclosingType);
needToConvert = TypeBinding.notEquals(originalEnclosing, convertedEnclosing); // only convert generic or parameterized types
} else if (needToConvert) {
convertedEnclosing = (ReferenceBinding) convertToRawType(originalEnclosing, false);
} else {
convertedEnclosing = convertToParameterizedType(originalEnclosing);
}
}
if (needToConvert) {
convertedType = createRawType((ReferenceBinding) originalType.erasure(), convertedEnclosing);
} else if (TypeBinding.notEquals(originalEnclosing, convertedEnclosing)) {
convertedType = createParameterizedType((ReferenceBinding) originalType.erasure(), null, convertedEnclosing);
} else {
convertedType = originalType;
}
}
if (TypeBinding.notEquals(originalType, convertedType)) {
return dimension > 0 ? (TypeBinding)createArrayType(convertedType, dimension) : convertedType;
}
return type;
}
/**
* Convert an array of types in raw forms.
* Only allocate an array if anything is different.
*/
public ReferenceBinding[] convertToRawTypes(ReferenceBinding[] originalTypes, boolean forceErasure, boolean forceRawEnclosingType) {
if (originalTypes == null) return null;
ReferenceBinding[] convertedTypes = originalTypes;
for (int i = 0, length = originalTypes.length; i < length; i++) {
ReferenceBinding originalType = originalTypes[i];
ReferenceBinding convertedType = (ReferenceBinding) convertToRawType(forceErasure ? originalType.erasure() : originalType, forceRawEnclosingType);
if (TypeBinding.notEquals(convertedType, originalType)) {
if (convertedTypes == originalTypes) {
System.arraycopy(originalTypes, 0, convertedTypes = new ReferenceBinding[length], 0, i);
}
convertedTypes[i] = convertedType;
} else if (convertedTypes != originalTypes) {
convertedTypes[i] = originalType;
}
}
return convertedTypes;
}
// variation for unresolved types in binaries (consider generic type as raw)
public TypeBinding convertUnresolvedBinaryToRawType(TypeBinding type) {
int dimension;
TypeBinding originalType;
switch(type.kind()) {
case Binding.BASE_TYPE :
case Binding.TYPE_PARAMETER:
case Binding.WILDCARD_TYPE:
case Binding.INTERSECTION_TYPE:
case Binding.RAW_TYPE:
return type;
case Binding.ARRAY_TYPE:
dimension = type.dimensions();
originalType = type.leafComponentType();
break;
default:
if (type.id == TypeIds.T_JavaLangObject)
return type; // Object is not generic
dimension = 0;
originalType = type;
}
boolean needToConvert;
switch (originalType.kind()) {
case Binding.BASE_TYPE :
return type;
case Binding.GENERIC_TYPE :
needToConvert = true;
break;
case Binding.PARAMETERIZED_TYPE :
ParameterizedTypeBinding paramType = (ParameterizedTypeBinding) originalType;
needToConvert = paramType.genericType().isGenericType(); // only recursive call to enclosing type can find parameterizedType with arguments
break;
default :
needToConvert = false;
break;
}
ReferenceBinding originalEnclosing = originalType.enclosingType();
TypeBinding convertedType;
if (originalEnclosing == null) {
convertedType = needToConvert ? createRawType((ReferenceBinding)originalType.erasure(), null) : originalType;
} else {
if (!needToConvert && originalType.isStatic())
return originalType;
ReferenceBinding convertedEnclosing = (ReferenceBinding) convertUnresolvedBinaryToRawType(originalEnclosing);
if (TypeBinding.notEquals(convertedEnclosing, originalEnclosing)) {
needToConvert = true;
}
if (needToConvert) {
convertedType = createRawType((ReferenceBinding) originalType.erasure(), convertedEnclosing);
} else {
convertedType = originalType;
}
}
if (TypeBinding.notEquals(originalType, convertedType)) {
return dimension > 0 ? (TypeBinding)createArrayType(convertedType, dimension) : convertedType;
}
return type;
}