/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tools.lint;
import static com.android.SdkConstants.UTF_8;
import com.android.SdkConstants;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.sdklib.IAndroidTarget;
import com.android.tools.lint.client.api.JavaParser;
import com.android.tools.lint.client.api.LintClient;
import com.android.tools.lint.detector.api.JavaContext;
import com.android.tools.lint.detector.api.Location;
import com.android.tools.lint.detector.api.Project;
import com.android.tools.lint.detector.api.Scope;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import org.eclipse.jdt.core.compiler.CategorizedProblem;
import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.internal.compiler.CompilationResult;
import org.eclipse.jdt.internal.compiler.Compiler;
import org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies;
import org.eclipse.jdt.internal.compiler.ICompilerRequestor;
import org.eclipse.jdt.internal.compiler.IErrorHandlingPolicy;
import org.eclipse.jdt.internal.compiler.IProblemFactory;
import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.AllocationExpression;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.CharLiteral;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.DoubleLiteral;
import org.eclipse.jdt.internal.compiler.ast.ExplicitConstructorCall;
import org.eclipse.jdt.internal.compiler.ast.Expression;
import org.eclipse.jdt.internal.compiler.ast.FalseLiteral;
import org.eclipse.jdt.internal.compiler.ast.FloatLiteral;
import org.eclipse.jdt.internal.compiler.ast.IntLiteral;
import org.eclipse.jdt.internal.compiler.ast.Literal;
import org.eclipse.jdt.internal.compiler.ast.LongLiteral;
import org.eclipse.jdt.internal.compiler.ast.MagicLiteral;
import org.eclipse.jdt.internal.compiler.ast.MessageSend;
import org.eclipse.jdt.internal.compiler.ast.NameReference;
import org.eclipse.jdt.internal.compiler.ast.NullLiteral;
import org.eclipse.jdt.internal.compiler.ast.NumberLiteral;
import org.eclipse.jdt.internal.compiler.ast.StringLiteral;
import org.eclipse.jdt.internal.compiler.ast.TrueLiteral;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.eclipse.jdt.internal.compiler.batch.CompilationUnit;
import org.eclipse.jdt.internal.compiler.batch.FileSystem;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.compiler.lookup.Binding;
import org.eclipse.jdt.internal.compiler.lookup.FieldBinding;
import org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding;
import org.eclipse.jdt.internal.compiler.lookup.MethodBinding;
import org.eclipse.jdt.internal.compiler.lookup.NestedTypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.ProblemBinding;
import org.eclipse.jdt.internal.compiler.lookup.ProblemFieldBinding;
import org.eclipse.jdt.internal.compiler.lookup.ProblemMethodBinding;
import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeConstants;
import org.eclipse.jdt.internal.compiler.parser.Parser;
import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;
import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
import java.io.File;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import lombok.ast.Node;
import lombok.ast.VariableDeclaration;
import lombok.ast.VariableDefinition;
import lombok.ast.ecj.EcjTreeConverter;
/**
* Java parser which uses ECJ for parsing and type attribution
*/
public class EcjParser extends JavaParser {
private static final boolean DEBUG_DUMP_PARSE_ERRORS = true;
private final LintClient mClient;
private final Project mProject;
private Map<File, ICompilationUnit> mSourceUnits;
private Map<ICompilationUnit, CompilationUnitDeclaration> mCompiled;
private Parser mParser;
public EcjParser(@NonNull LintCliClient client, @Nullable Project project) {
mClient = client;
mProject = project;
mParser = getParser();
}
/**
* Create the default compiler options
*/
public static CompilerOptions createCompilerOptions() {
CompilerOptions options = new CompilerOptions();
// Always using JDK 7 rather than basing it on project metadata since we
// don't do compilation error validation in lint (we leave that to the IDE's
// error parser or the command line build's compilation step); we want an
// AST that is as tolerant as possible.
long languageLevel = ClassFileConstants.JDK1_7;
options.complianceLevel = languageLevel;
options.sourceLevel = languageLevel;
options.targetJDK = languageLevel;
options.originalComplianceLevel = languageLevel;
options.originalSourceLevel = languageLevel;
options.inlineJsrBytecode = true; // >1.5
options.parseLiteralExpressionsAsConstants = true;
options.analyseResourceLeaks = false;
options.docCommentSupport = false;
options.defaultEncoding = UTF_8;
options.suppressOptionalErrors = true;
options.generateClassFiles = false;
options.isAnnotationBasedNullAnalysisEnabled = false;
options.reportUnusedDeclaredThrownExceptionExemptExceptionAndThrowable = false;
options.reportUnusedDeclaredThrownExceptionIncludeDocCommentReference = false;
options.reportUnusedDeclaredThrownExceptionWhenOverriding = false;
options.reportUnusedParameterIncludeDocCommentReference = false;
options.reportUnusedParameterWhenImplementingAbstract = false;
options.reportUnusedParameterWhenOverridingConcrete = false;
options.suppressWarnings = true;
options.processAnnotations = true;
options.verbose = false;
return options;
}
public static long getLanguageLevel(int major, int minor) {
assert major == 1;
switch (minor) {
case 5: return ClassFileConstants.JDK1_5;
case 6: return ClassFileConstants.JDK1_6;
case 7:
default:
return ClassFileConstants.JDK1_7;
}
}
private Parser getParser() {
if (mParser == null) {
CompilerOptions options = createCompilerOptions();
ProblemReporter problemReporter = new ProblemReporter(
DefaultErrorHandlingPolicies.exitOnFirstError(),
options,
new DefaultProblemFactory());
mParser = new Parser(problemReporter,
options.parseLiteralExpressionsAsConstants);
mParser.javadocParser.checkDocComment = false;
}
return mParser;
}
@Override
public void prepareJavaParse(@NonNull final List<JavaContext> contexts) {
if (mProject == null || contexts.isEmpty()) {
return;
}
List<ICompilationUnit> sources = Lists.newArrayListWithExpectedSize(contexts.size());
mSourceUnits = Maps.newHashMapWithExpectedSize(sources.size());
for (JavaContext context : contexts) {
String contents = context.getContents();
if (contents == null) {
continue;
}
File file = context.file;
CompilationUnit unit = new CompilationUnit(contents.toCharArray(), file.getPath(),
UTF_8);
sources.add(unit);
mSourceUnits.put(file, unit);
}
List<String> classPath = computeClassPath(contexts);
mCompiled = Maps.newHashMapWithExpectedSize(mSourceUnits.size());
try {
parse(createCompilerOptions(), sources, classPath, mCompiled, mClient);
} catch (Throwable t) {
mClient.log(t, "ECJ compiler crashed");
}
if (DEBUG_DUMP_PARSE_ERRORS) {
for (CompilationUnitDeclaration unit : mCompiled.values()) {
// so maybe I don't need my map!!
CategorizedProblem[] problems = unit.compilationResult()
.getAllProblems();
if (problems != null) {
for (IProblem problem : problems) {
if (problem == null || !problem.isError()) {
continue;
}
System.out.println(
new String(problem.getOriginatingFileName()) + ":"
+ (problem.isError() ? "Error" : "Warning") + ": "
+ problem.getSourceLineNumber() + ": " + problem.getMessage());
}
}
}
}
}
/** Parse the given source units and class path and store it into the given output map */
public static void parse(
CompilerOptions options,
@NonNull List<ICompilationUnit> sourceUnits,
@NonNull List<String> classPath,
@NonNull Map<ICompilationUnit, CompilationUnitDeclaration> outputMap,
@Nullable LintClient client) {
INameEnvironment environment = new FileSystem(
classPath.toArray(new String[classPath.size()]), new String[0],
options.defaultEncoding);
IErrorHandlingPolicy policy = DefaultErrorHandlingPolicies.proceedWithAllProblems();
IProblemFactory problemFactory = new DefaultProblemFactory(Locale.getDefault());
ICompilerRequestor requestor = new ICompilerRequestor() {
@Override
public void acceptResult(CompilationResult result) {
// Not used; we need the corresponding CompilationUnitDeclaration for the source
// units (the AST parsed from source) which we don't get access to here, so we
// instead subclass AST to get our hands on them.
}
};
NonGeneratingCompiler compiler = new NonGeneratingCompiler(environment, policy, options,
requestor, problemFactory, outputMap);
try {
compiler.compile(sourceUnits.toArray(new ICompilationUnit[sourceUnits.size()]));
} catch (Throwable t) {
if (client != null) {
CompilationUnitDeclaration currentUnit = compiler.getCurrentUnit();
if (currentUnit == null || currentUnit.getFileName() == null) {
client.log(t, "ECJ compiler crashed");
} else {
client.log(t, "ECJ compiler crashed processing %1$s",
new String(currentUnit.getFileName()));
}
} else {
t.printStackTrace();
}
}
}
@NonNull
private List<String> computeClassPath(@NonNull List<JavaContext> contexts) {
assert mProject != null;
List<String> classPath = Lists.newArrayList();
IAndroidTarget compileTarget = mProject.getBuildTarget();
if (compileTarget != null) {
String androidJar = compileTarget.getPath(IAndroidTarget.ANDROID_JAR);
if (androidJar != null) {
classPath.add(androidJar);
}
}
Set<File> libraries = Sets.newHashSet();
Set<String> names = Sets.newHashSet();
for (File library : mProject.getJavaLibraries()) {
libraries.add(library);
names.add(getLibraryName(library));
}
for (Project project : mProject.getAllLibraries()) {
for (File library : project.getJavaLibraries()) {
String name = getLibraryName(library);
// Avoid pulling in android-support-v4.jar from libraries etc
// since we're pointing to the local copies rather than the real
// maven/gradle source copies
if (!names.contains(name)) {
libraries.add(library);
names.add(name);
}
}
}
for (File file : libraries) {
classPath.add(file.getPath());
}
// In incremental mode we may need to point to other sources in the project
// for type resolution
EnumSet<Scope> scope = contexts.get(0).getScope();
if (!scope.contains(Scope.ALL_JAVA_FILES)) {
// May need other compiled classes too
for (File dir : mProject.getJavaClassFolders()) {
classPath.add(dir.getPath());
}
}
return classPath;
}
@NonNull
private static String getLibraryName(@NonNull File library) {
String name = library.getName();
if (name.equals(SdkConstants.FN_CLASSES_JAR)) {
// For AAR artifacts they'll all clash with "classes.jar"; include more unique
// context
String path = library.getPath();
int index = path.indexOf("exploded-aar");
if (index != -1) {
return path.substring(index);
} else {
index = path.indexOf("exploded-bundles");
if (index != -1) {
return path.substring(index);
}
}
File parent = library.getParentFile();
if (parent != null) {
return parent.getName() + File.separatorChar + name;
}
}
return name;
}
@Override
public Node parseJava(@NonNull JavaContext context) {
String code = context.getContents();
if (code == null) {
return null;
}
CompilationUnitDeclaration unit = getParsedUnit(context, code);
try {
EcjTreeConverter converter = new EcjTreeConverter();
converter.visit(code, unit);
List<? extends Node> nodes = converter.getAll();
if (nodes != null) {
// There could be more than one node when there are errors; pick out the
// compilation unit node
for (Node node : nodes) {
if (node instanceof lombok.ast.CompilationUnit) {
return node;
}
}
}
return null;
} catch (Throwable t) {
mClient.log(t, "Failed converting ECJ parse tree to Lombok for file %1$s",
context.file.getPath());
return null;
}
}
@Nullable
private CompilationUnitDeclaration getParsedUnit(
@NonNull JavaContext context,
@NonNull String code) {
ICompilationUnit sourceUnit = null;
if (mSourceUnits != null && mCompiled != null) {
sourceUnit = mSourceUnits.get(context.file);
if (sourceUnit != null) {
CompilationUnitDeclaration unit = mCompiled.get(sourceUnit);
if (unit != null) {
return unit;
}
}
}
if (sourceUnit == null) {
sourceUnit = new CompilationUnit(code.toCharArray(), context.file.getName(), UTF_8);
}
try {
CompilationResult compilationResult = new CompilationResult(sourceUnit, 0, 0, 0);
return getParser().parse(sourceUnit, compilationResult);
} catch (AbortCompilation e) {
// No need to report Java parsing errors while running in Eclipse.
// Eclipse itself will already provide problem markers for these files,
// so all this achieves is creating "multiple annotations on this line"
// tooltips instead.
return null;
}
}
@NonNull
@Override
public Location getLocation(@NonNull JavaContext context, @NonNull Node node) {
lombok.ast.Position position = node.getPosition();
return Location.create(context.file, context.getContents(),
position.getStart(), position.getEnd());
}
@NonNull
@Override
public
Location.Handle createLocationHandle(@NonNull JavaContext context, @NonNull Node node) {
return new LocationHandle(context.file, node);
}
@Override
public void dispose(@NonNull JavaContext context,
@NonNull Node compilationUnit) {
if (mSourceUnits != null && mCompiled != null) {
ICompilationUnit sourceUnit = mSourceUnits.get(context.file);
if (sourceUnit != null) {
mSourceUnits.remove(context.file);
mCompiled.remove(sourceUnit);
}
}
}
@Nullable
private static Object getNativeNode(@NonNull Node node) {
Object nativeNode = node.getNativeNode();
if (nativeNode != null) {
return nativeNode;
}
Node parent = node.getParent();
// The ECJ native nodes are sometimes spotty; for example, for a
// MethodInvocation node we can have a null native node, but its
// parent expression statement will point to the real MessageSend node
if (parent != null) {
nativeNode = parent.getNativeNode();
if (nativeNode != null) {
return nativeNode;
}
}
if (node instanceof VariableDeclaration) {
VariableDeclaration declaration = (VariableDeclaration) node;
VariableDefinition definition = declaration.astDefinition();
if (definition != null) {
lombok.ast.TypeReference typeReference = definition.astTypeReference();
if (typeReference != null) {
return typeReference.getNativeNode();
}
}
}
return null;
}
@Override
@Nullable
public ResolvedNode resolve(@NonNull JavaContext context, @NonNull Node node) {
Object nativeNode = getNativeNode(node);
if (nativeNode == null) {
return null;
}
if (nativeNode instanceof NameReference) {
return resolve(((NameReference) nativeNode).binding);
} else if (nativeNode instanceof TypeReference) {
return resolve(((TypeReference) nativeNode).resolvedType);
} else if (nativeNode instanceof MessageSend) {
return resolve(((MessageSend) nativeNode).binding);
} else if (nativeNode instanceof AllocationExpression) {
return resolve(((AllocationExpression) nativeNode).binding);
} else if (nativeNode instanceof TypeDeclaration) {
return resolve(((TypeDeclaration) nativeNode).binding);
} else if (nativeNode instanceof ExplicitConstructorCall) {
return resolve(((ExplicitConstructorCall) nativeNode).binding);
} else if (nativeNode instanceof Annotation) {
return resolve(((Annotation) nativeNode).resolvedType);
} else if (nativeNode instanceof AbstractMethodDeclaration) {
return resolve(((AbstractMethodDeclaration) nativeNode).binding);
}
// TODO: Handle org.eclipse.jdt.internal.compiler.ast.SuperReference. It
// doesn't contain an actual method binding; the parent node call should contain
// it, but is missing a native node reference; investigate the ECJ bridge's super
// handling.
return null;
}
private static ResolvedNode resolve(@Nullable Binding binding) {
if (binding == null || binding instanceof ProblemBinding) {
return null;
}
if (binding instanceof TypeBinding) {
TypeBinding tb = (TypeBinding) binding;
return new EcjResolvedClass(tb);
} else if (binding instanceof MethodBinding) {
MethodBinding mb = (MethodBinding) binding;
if (mb instanceof ProblemMethodBinding) {
return null;
}
//noinspection VariableNotUsedInsideIf
if (mb.declaringClass != null) {
return new EcjResolvedMethod(mb);
}
} else if (binding instanceof LocalVariableBinding) {
LocalVariableBinding lvb = (LocalVariableBinding) binding;
//noinspection VariableNotUsedInsideIf
if (lvb.type != null) {
return new EcjResolvedVariable(lvb);
}
} else if (binding instanceof FieldBinding) {
FieldBinding fb = (FieldBinding) binding;
if (fb instanceof ProblemFieldBinding) {
return null;
}
if (fb.type != null && fb.declaringClass != null) {
return new EcjResolvedField(fb);
}
}
return null;
}
@Override
@Nullable
public TypeDescriptor getType(@NonNull JavaContext context, @NonNull Node node) {
Object nativeNode = getNativeNode(node);
if (nativeNode == null) {
return null;
}
if (nativeNode instanceof MessageSend) {
nativeNode = ((MessageSend)nativeNode).binding;
} else if (nativeNode instanceof AllocationExpression) {
nativeNode = ((AllocationExpression) nativeNode).binding;
} else if (nativeNode instanceof NameReference) {
nativeNode = ((NameReference)nativeNode).resolvedType;
} else if (nativeNode instanceof Expression) {
if (nativeNode instanceof Literal) {
if (nativeNode instanceof StringLiteral) {
return getTypeDescriptor(TYPE_STRING);
} else if (nativeNode instanceof NumberLiteral) {
if (nativeNode instanceof IntLiteral) {
return getTypeDescriptor(TYPE_INT);
} else if (nativeNode instanceof LongLiteral) {
return getTypeDescriptor(TYPE_LONG);
} else if (nativeNode instanceof CharLiteral) {
return getTypeDescriptor(TYPE_CHAR);
} else if (nativeNode instanceof FloatLiteral) {
return getTypeDescriptor(TYPE_FLOAT);
} else if (nativeNode instanceof DoubleLiteral) {
return getTypeDescriptor(TYPE_DOUBLE);
}
} else if (nativeNode instanceof MagicLiteral) {
if (nativeNode instanceof TrueLiteral || nativeNode instanceof FalseLiteral) {
return getTypeDescriptor(TYPE_BOOLEAN);
} else if (nativeNode instanceof NullLiteral) {
return getTypeDescriptor(TYPE_NULL);
}
}
}
nativeNode = ((Expression)nativeNode).resolvedType;
} else if (nativeNode instanceof TypeDeclaration) {
nativeNode = ((TypeDeclaration) nativeNode).binding;
} else if (nativeNode instanceof AbstractMethodDeclaration) {
nativeNode = ((AbstractMethodDeclaration) nativeNode).binding;
}
if (nativeNode instanceof Binding) {
Binding binding = (Binding) nativeNode;
if (binding instanceof TypeBinding) {
TypeBinding tb = (TypeBinding) binding;
return getTypeDescriptor(tb);
} else if (binding instanceof LocalVariableBinding) {
LocalVariableBinding lvb = (LocalVariableBinding) binding;
if (lvb.type != null) {
return getTypeDescriptor(lvb.type);
}
} else if (binding instanceof FieldBinding) {
FieldBinding fb = (FieldBinding) binding;
if (fb.type != null) {
return getTypeDescriptor(fb.type);
}
} else if (binding instanceof MethodBinding) {
return getTypeDescriptor(((MethodBinding) binding).returnType);
} else if (binding instanceof ProblemBinding) {
// Unresolved type. We just don't know.
return null;
}
}
return null;
}
@Nullable
private static TypeDescriptor getTypeDescriptor(@Nullable TypeBinding resolvedType) {
if (resolvedType == null) {
return null;
}
return new EcjTypeDescriptor(resolvedType.readableName());
}
private static TypeDescriptor getTypeDescriptor(String fqn) {
return new DefaultTypeDescriptor(fqn);
}
/* Handle for creating positions cheaply and returning full fledged locations later */
private static class LocationHandle implements Location.Handle {
private File mFile;
private Node mNode;
private Object mClientData;
public LocationHandle(File file, Node node) {
mFile = file;
mNode = node;
}
@NonNull
@Override
public Location resolve() {
lombok.ast.Position pos = mNode.getPosition();
return Location.create(mFile, null /*contents*/, pos.getStart(), pos.getEnd());
}
@Override
public void setClientData(@Nullable Object clientData) {
mClientData = clientData;
}
@Override
@Nullable
public Object getClientData() {
return mClientData;
}
}
// Custom version of the compiler which skips code generation and records source units
private static class NonGeneratingCompiler extends Compiler {
private Map<ICompilationUnit, CompilationUnitDeclaration> mUnits;
private CompilationUnitDeclaration mCurrentUnit;
public NonGeneratingCompiler(INameEnvironment environment, IErrorHandlingPolicy policy,
CompilerOptions options, ICompilerRequestor requestor,
IProblemFactory problemFactory,
Map<ICompilationUnit, CompilationUnitDeclaration> units) {
super(environment, policy, options, requestor, problemFactory, null, null);
mUnits = units;
}
@Nullable
CompilationUnitDeclaration getCurrentUnit() {
// Can't use lookupEnvironment.unitBeingCompleted directly; it gets nulled out
// as part of the exception catch handling in the compiler before this method
// is called from lint -- therefore we stash a copy in our own mCurrentUnit field
return mCurrentUnit;
}
@Override
protected synchronized void addCompilationUnit(ICompilationUnit sourceUnit,
CompilationUnitDeclaration parsedUnit) {
super.addCompilationUnit(sourceUnit, parsedUnit);
mUnits.put(sourceUnit, parsedUnit);
}
@Override
public void process(CompilationUnitDeclaration unit, int unitNumber) {
mCurrentUnit = lookupEnvironment.unitBeingCompleted = unit;
parser.getMethodBodies(unit);
if (unit.scope != null) {
unit.scope.faultInTypes();
unit.scope.verifyMethods(lookupEnvironment.methodVerifier());
}
unit.resolve();
unit.analyseCode();
// This is where we differ from super: DON'T call generateCode().
// Sadly we can't just set ignoreMethodBodies=true to have the same effect,
// since that would also skip the analyseCode call, which we DO, want:
// unit.generateCode();
if (options.produceReferenceInfo && unit.scope != null) {
unit.scope.storeDependencyInfo();
}
unit.finalizeProblems();
unit.compilationResult.totalUnitsKnown = totalUnits;
lookupEnvironment.unitBeingCompleted = null;
}
}
private static class EcjTypeDescriptor extends TypeDescriptor {
private String mName;
private char[] mChars;
private EcjTypeDescriptor(char[] chars) {
mChars = chars;
}
@NonNull
@Override
public String getName() {
if (mName == null) {
mName = new String(mChars);
}
return mName;
}
@NonNull
@Override
public String getSignature() {
return getName();
}
@Override
public boolean matchesName(@NonNull String name) {
return sameChars(name, mChars);
}
@Override
public boolean matchesSignature(@NonNull String signature) {
return matchesName(signature);
}
@Override
public String toString() {
return getSignature();
}
}
private static class EcjResolvedMethod extends ResolvedMethod {
private MethodBinding mBinding;
private EcjResolvedMethod(MethodBinding binding) {
mBinding = binding;
assert mBinding.declaringClass != null;
}
@NonNull
@Override
public String getName() {
char[] c = isConstructor() ? mBinding.declaringClass.readableName() : mBinding.selector;
return new String(c);
}
@Override
public boolean matches(@NonNull String name) {
char[] c = isConstructor() ? mBinding.declaringClass.readableName() : mBinding.selector;
return sameChars(name, c);
}
@NonNull
@Override
public ResolvedClass getContainingClass() {
return new EcjResolvedClass(mBinding.declaringClass);
}
@Override
public int getArgumentCount() {
return mBinding.parameters != null ? mBinding.parameters.length : 0;
}
@NonNull
@Override
public TypeDescriptor getArgumentType(int index) {
TypeBinding parameterType = mBinding.parameters[index];
TypeDescriptor typeDescriptor = getTypeDescriptor(parameterType);
assert typeDescriptor != null; // because parameter is not null
return typeDescriptor;
}
@Nullable
@Override
public TypeDescriptor getReturnType() {
return isConstructor() ? null : getTypeDescriptor(mBinding.returnType);
}
@Override
public boolean isConstructor() {
return mBinding.isConstructor();
}
@Override
public int getModifiers() {
return mBinding.getAccessFlags();
}
@Override
public String getSignature() {
return mBinding.toString();
}
}
private static class EcjResolvedClass extends ResolvedClass {
private TypeBinding mBinding;
private EcjResolvedClass(TypeBinding binding) {
mBinding = binding;
}
@NonNull
@Override
public String getName() {
return new String(mBinding.readableName());
}
@Override
public boolean matches(@NonNull String name) {
return sameChars(name, mBinding.readableName());
}
@Nullable
@Override
public ResolvedClass getSuperClass() {
if (mBinding instanceof ReferenceBinding) {
ReferenceBinding refBinding = (ReferenceBinding) mBinding;
ReferenceBinding superClass = refBinding.superclass();
if (superClass != null) {
return new EcjResolvedClass(superClass);
}
}
return null;
}
@Nullable
@Override
public ResolvedClass getContainingClass() {
if (mBinding instanceof NestedTypeBinding) {
NestedTypeBinding ntb = (NestedTypeBinding) mBinding;
if (ntb.enclosingType != null) {
return new EcjResolvedClass(ntb.enclosingType);
}
}
return null;
}
@Override
public boolean isSubclassOf(@NonNull String name, boolean strict) {
if (mBinding instanceof ReferenceBinding) {
ReferenceBinding cls = (ReferenceBinding) mBinding;
if (strict) {
cls = cls.superclass();
}
for (; cls != null; cls = cls.superclass()) {
if (sameChars(name, cls.readableName())) {
return true;
}
}
}
return false;
}
@Override
@NonNull
public Iterable<ResolvedMethod> getConstructors() {
if (mBinding instanceof ReferenceBinding) {
ReferenceBinding cls = (ReferenceBinding) mBinding;
MethodBinding[] methods = cls.getMethods(TypeConstants.INIT);
if (methods != null) {
int count = methods.length;
List<ResolvedMethod> result = Lists.newArrayListWithExpectedSize(count);
for (MethodBinding method : methods) {
if (method.isConstructor()) {
result.add(new EcjResolvedMethod(method));
}
}
return result;
}
}
return Collections.emptyList();
}
@Override
@NonNull
public Iterable<ResolvedMethod> getMethods(@NonNull String name) {
if (mBinding instanceof ReferenceBinding) {
ReferenceBinding cls = (ReferenceBinding) mBinding;
MethodBinding[] methods = cls.getMethods(name.toCharArray());
if (methods != null) {
int count = methods.length;
List<ResolvedMethod> result = Lists.newArrayListWithExpectedSize(count);
for (MethodBinding method : methods) {
if (!method.isConstructor()) {
result.add(new EcjResolvedMethod(method));
}
}
return result;
}
}
return Collections.emptyList();
}
@Override
@Nullable
public ResolvedField getField(@NonNull String name) {
if (mBinding instanceof ReferenceBinding) {
ReferenceBinding cls = (ReferenceBinding) mBinding;
FieldBinding[] fields = cls.fields();
if (fields != null) {
for (FieldBinding field : fields) {
if (sameChars(name, field.name)) {
return new EcjResolvedField(field);
}
}
}
}
return null;
}
@Override
public int getModifiers() {
if (mBinding instanceof ReferenceBinding) {
ReferenceBinding cls = (ReferenceBinding) mBinding;
// These constants from ClassFileConstants luckily agree with the Modifier
// constants in the low bits we care about (public, abstract, static, etc)
return cls.getAccessFlags();
}
return 0;
}
@Override
public String getSignature() {
return getName();
}
}
private static class EcjResolvedField extends ResolvedField {
private FieldBinding mBinding;
private EcjResolvedField(FieldBinding binding) {
mBinding = binding;
}
@NonNull
@Override
public String getName() {
return new String(mBinding.readableName());
}
@Override
public boolean matches(@NonNull String name) {
return sameChars(name, mBinding.readableName());
}
@NonNull
@Override
public TypeDescriptor getType() {
TypeDescriptor typeDescriptor = getTypeDescriptor(mBinding.type);
assert typeDescriptor != null; // because mBinding.type is known not to be null
return typeDescriptor;
}
@NonNull
@Override
public ResolvedClass getContainingClass() {
return new EcjResolvedClass(mBinding.declaringClass);
}
@Override
public int getModifiers() {
return mBinding.getAccessFlags();
}
@Override
public String getSignature() {
return mBinding.toString();
}
}
private static class EcjResolvedVariable extends ResolvedVariable {
private LocalVariableBinding mBinding;
private EcjResolvedVariable(LocalVariableBinding binding) {
mBinding = binding;
}
@NonNull
@Override
public String getName() {
return new String(mBinding.readableName());
}
@Override
public boolean matches(@NonNull String name) {
return sameChars(name, mBinding.readableName());
}
@NonNull
@Override
public TypeDescriptor getType() {
TypeDescriptor typeDescriptor = getTypeDescriptor(mBinding.type);
assert typeDescriptor != null; // because mBinding.type is known not to be null
return typeDescriptor;
}
@Override
public int getModifiers() {
return mBinding.modifiers;
}
@Override
public String getSignature() {
return mBinding.toString();
}
}
private static boolean sameChars(String str, char[] chars) {
int length = str.length();
if (chars.length != length) {
return false;
}
for (int i = 0; i < length; i++) {
if (chars[i] != str.charAt(i)) {
return false;
}
}
return true;
}
}