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UnresolvedElementsBaseSubProcessor.java
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UnresolvedElementsBaseSubProcessor.java
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/*******************************************************************************
* Copyright (c) 2024 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
* Renaud Waldura <renaud+eclipse@waldura.com> - New class/interface with wizard
* Rabea Gransberger <rgransberger@gmx.de> - [quick fix] Fix several visibility issues - https://bugs.eclipse.org/394692
* Jens Reimann <jreimann@redhat.com> Bug 38201: [quick assist] Allow creating abstract method - https://bugs.eclipse.org/38201
*******************************************************************************/
package org.eclipse.jdt.internal.ui.text.correction;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.List;
import java.util.Optional;
import org.osgi.framework.Bundle;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.CompositeChange;
import org.eclipse.ltk.core.refactoring.resource.DeleteResourceChange;
import org.eclipse.ltk.core.refactoring.resource.ResourceChange;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IModuleDescription;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.ITypeRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTMatcher;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.ASTParser;
import org.eclipse.jdt.core.dom.Annotation;
import org.eclipse.jdt.core.dom.ArrayType;
import org.eclipse.jdt.core.dom.Assignment;
import org.eclipse.jdt.core.dom.BodyDeclaration;
import org.eclipse.jdt.core.dom.CastExpression;
import org.eclipse.jdt.core.dom.ClassInstanceCreation;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.ConstructorInvocation;
import org.eclipse.jdt.core.dom.EnhancedForStatement;
import org.eclipse.jdt.core.dom.EnumConstantDeclaration;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.ExpressionMethodReference;
import org.eclipse.jdt.core.dom.FieldAccess;
import org.eclipse.jdt.core.dom.IBinding;
import org.eclipse.jdt.core.dom.IMethodBinding;
import org.eclipse.jdt.core.dom.IPackageBinding;
import org.eclipse.jdt.core.dom.ITypeBinding;
import org.eclipse.jdt.core.dom.IVariableBinding;
import org.eclipse.jdt.core.dom.ImportDeclaration;
import org.eclipse.jdt.core.dom.LambdaExpression;
import org.eclipse.jdt.core.dom.MemberValuePair;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.core.dom.MethodInvocation;
import org.eclipse.jdt.core.dom.Modifier;
import org.eclipse.jdt.core.dom.Name;
import org.eclipse.jdt.core.dom.NameQualifiedType;
import org.eclipse.jdt.core.dom.NormalAnnotation;
import org.eclipse.jdt.core.dom.ParenthesizedExpression;
import org.eclipse.jdt.core.dom.ProvidesDirective;
import org.eclipse.jdt.core.dom.QualifiedName;
import org.eclipse.jdt.core.dom.SimpleName;
import org.eclipse.jdt.core.dom.SimpleType;
import org.eclipse.jdt.core.dom.SingleMemberAnnotation;
import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
import org.eclipse.jdt.core.dom.StructuralPropertyDescriptor;
import org.eclipse.jdt.core.dom.SuperConstructorInvocation;
import org.eclipse.jdt.core.dom.SuperFieldAccess;
import org.eclipse.jdt.core.dom.SuperMethodInvocation;
import org.eclipse.jdt.core.dom.SwitchCase;
import org.eclipse.jdt.core.dom.SwitchExpression;
import org.eclipse.jdt.core.dom.SwitchStatement;
import org.eclipse.jdt.core.dom.ThisExpression;
import org.eclipse.jdt.core.dom.ThrowStatement;
import org.eclipse.jdt.core.dom.Type;
import org.eclipse.jdt.core.dom.TypeDeclaration;
import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.jdt.core.dom.rewrite.ImportRewrite;
import org.eclipse.jdt.core.dom.rewrite.ImportRewrite.ImportRewriteContext;
import org.eclipse.jdt.core.dom.rewrite.ImportRewrite.TypeLocation;
import org.eclipse.jdt.core.manipulation.ChangeCorrectionProposalCore;
import org.eclipse.jdt.core.manipulation.JavaManipulation;
import org.eclipse.jdt.core.manipulation.TypeKinds;
import org.eclipse.jdt.core.refactoring.CompilationUnitChange;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.internal.core.manipulation.BindingLabelProviderCore;
import org.eclipse.jdt.internal.core.manipulation.JavaElementLabelsCore;
import org.eclipse.jdt.internal.core.manipulation.JavaManipulationPlugin;
import org.eclipse.jdt.internal.core.manipulation.StubUtility;
import org.eclipse.jdt.internal.core.manipulation.dom.ASTResolving;
import org.eclipse.jdt.internal.core.manipulation.util.BasicElementLabels;
import org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext;
import org.eclipse.jdt.internal.corext.dom.ASTNodeFactory;
import org.eclipse.jdt.internal.corext.dom.ASTNodes;
import org.eclipse.jdt.internal.corext.dom.Bindings;
import org.eclipse.jdt.internal.corext.dom.IASTSharedValues;
import org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer;
import org.eclipse.jdt.internal.corext.refactoring.changes.ClasspathChange;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jdt.internal.corext.util.Messages;
import org.eclipse.jdt.internal.corext.util.TypeFilter;
import org.eclipse.jdt.ui.text.java.correction.ASTRewriteCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.AddArgumentCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.AddImportCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.AddModuleRequiresCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.AddTypeParameterProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.CastCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore.ChangeDescription;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore.EditDescription;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore.InsertDescription;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore.RemoveDescription;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore.SwapDescription;
import org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.NewAbstractMethodCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.NewAnnotationMemberProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.NewMethodCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.NewVariableCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.QualifyTypeProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.RenameNodeCorrectionProposalCore;
import org.eclipse.jdt.internal.ui.text.correction.proposals.ReplaceCorrectionProposalCore;
public abstract class UnresolvedElementsBaseSubProcessor<T> {
protected static final int CompositeChangeProposal= 1;
protected static final int NewVariableProposal1= 100;
protected static final int NewVariableProposal2= 101;
protected static final int NewVariableProposal3= 102;
protected static final int NewFieldForTypeProposal1= 200;
protected static final int NewFieldForTypeProposal2= 210;
protected static final int NewFieldForTypeProposal3= 211;
protected static final int NewFieldForTypeProposal4= 220;
protected static final int NewFieldForTypeProposal5= 221;
protected static final int SimilarVariableProposal1= 300;
protected static final int SimilarVariableProposal2= 310;
protected static final int SimilarVariableProposal3= 320;
protected static final int EnhancedForWithoutTypeProposal1= 400;
protected static final int CopyAnnotationsJarProposal1= 500;
protected static final int TypeRefChangeProposal1= 820;
protected static final int TypeRefChangeProposal2= 830;
protected static final int TypeRefChangeFullProposal1= 910;
protected static final int NewTypeProposalsParams1= 1080;
protected static final int RequiresModuleProposal1= 1180;
protected static final int MethodProposal1= 1210;
protected static final int MethodProposal2= 1280;
protected static final int StaticImportFavoriteProposal1= 1310;
protected static final int NewMethodProposal1= 1410;
protected static final int NewMethodProposal2= 1420;
protected static final int NewMethodProposal3= 1430;
protected static final int NewMethodProposal4= 1450;
protected static final int NewMethodProposal5= 1475;
protected static final int NewMethodProposal6= 1480;
protected static final int NewMethodProposal7= 1490;
protected static final int MissingCastParentsProposal1= 1550;
protected static final int ExistingParentCastProposal1= 1650;
protected static final int MoreParametersProposal1= 1700;
protected static final int MoreParametersProposal2= 1750;
protected static final int MoreArgumentsProposal1= 1810;
protected static final int MoreArgumentsProposal2= 1850;
protected static final int EqualNumberOfParameters1= 1950;
protected static final int EqualNumberOfParameters2= 1970;
protected static final int EqualNumberOfParameters3= 1980;
protected static final int AddQualifierToOuterProposal1= 2000;
protected static final int ConstructorProposal1= 2100;
protected static final int AmbiguosTypeReferenceProposal1= 2200;
protected static final int ArrayAccessProposal1= 2300;
protected static final int ArrayAccessProposal2= 2301;
protected static final int AnnotationMemberProposal1= 2400;
protected static final int AnnotationMemberProposal2= 2401;
protected UnresolvedElementsBaseSubProcessor() {
}
private final String ADD_IMPORT_ID= "org.eclipse.jdt.ui.correction.addImport"; //$NON-NLS-1$
public void collectVariableProposals(IInvocationContextCore context, IProblemLocationCore problem, IVariableBinding resolvedField, Collection<T> proposals) throws CoreException {
ICompilationUnit cu= context.getCompilationUnit();
CompilationUnit astRoot= context.getASTRoot();
ASTNode selectedNode= problem.getCoveredNode(astRoot);
if (selectedNode == null) {
return;
}
// type that defines the variable
ITypeBinding binding= null;
ITypeBinding declaringTypeBinding= Bindings.getBindingOfParentTypeContext(selectedNode);
if (declaringTypeBinding == null) {
return;
}
// possible type kind of the node
boolean suggestVariableProposals= true;
int typeKind= 0;
selectedNode= ASTNodes.getUnparenthesedExpression(selectedNode);
Name node= null;
switch (selectedNode.getNodeType()) {
case ASTNode.SIMPLE_NAME:
node= (SimpleName) selectedNode;
ASTNode parent= node.getParent();
StructuralPropertyDescriptor locationInParent= node.getLocationInParent();
if (locationInParent == ExpressionMethodReference.EXPRESSION_PROPERTY) {
typeKind= TypeKinds.REF_TYPES;
} else if (locationInParent == MethodInvocation.EXPRESSION_PROPERTY) {
if (JavaModelUtil.is1d8OrHigher(cu.getJavaProject())) {
typeKind= TypeKinds.CLASSES | TypeKinds.INTERFACES | TypeKinds.ENUMS;
} else {
typeKind= TypeKinds.CLASSES;
}
} else if (locationInParent == FieldAccess.NAME_PROPERTY) {
Expression expression= ((FieldAccess) parent).getExpression();
if (expression != null) {
binding= expression.resolveTypeBinding();
if (binding == null) {
node= null;
}
}
} else if (parent instanceof SimpleType || parent instanceof NameQualifiedType) {
suggestVariableProposals= false;
typeKind= TypeKinds.REF_TYPES_AND_VAR;
} else if (parent instanceof QualifiedName qualifiedParent) {
Name qualifier= qualifiedParent.getQualifier();
if (qualifier != node) {
binding= qualifier.resolveTypeBinding();
} else {
typeKind= TypeKinds.REF_TYPES;
}
ASTNode outerParent= parent.getParent();
while (outerParent instanceof QualifiedName) {
outerParent= outerParent.getParent();
}
if (outerParent instanceof SimpleType || outerParent instanceof NameQualifiedType) {
typeKind= TypeKinds.REF_TYPES;
suggestVariableProposals= false;
}
} else if (locationInParent == SwitchCase.EXPRESSION_PROPERTY || locationInParent == SwitchCase.EXPRESSIONS2_PROPERTY) {
ASTNode caseParent= node.getParent().getParent();
ITypeBinding switchExp= null;
if (caseParent instanceof SwitchStatement stmt) {
switchExp= stmt.getExpression().resolveTypeBinding();
} else if (caseParent instanceof SwitchExpression stmt) {
switchExp= stmt.getExpression().resolveTypeBinding();
}
if (switchExp != null && switchExp.isEnum()) {
binding= switchExp;
}
} else if (locationInParent == SuperFieldAccess.NAME_PROPERTY) {
binding= declaringTypeBinding.getSuperclass();
}
break;
case ASTNode.QUALIFIED_NAME:
QualifiedName qualifierName= (QualifiedName) selectedNode;
ITypeBinding qualifierBinding= qualifierName.getQualifier().resolveTypeBinding();
if (qualifierBinding != null) {
node= qualifierName.getName();
binding= qualifierBinding;
} else {
node= qualifierName.getQualifier();
typeKind= TypeKinds.REF_TYPES;
suggestVariableProposals= node.isSimpleName();
}
if (selectedNode.getParent() instanceof SimpleType || selectedNode.getParent() instanceof NameQualifiedType) {
typeKind= TypeKinds.REF_TYPES;
suggestVariableProposals= false;
}
break;
case ASTNode.FIELD_ACCESS:
FieldAccess access= (FieldAccess) selectedNode;
Expression expression= access.getExpression();
if (expression != null) {
binding= expression.resolveTypeBinding();
if (binding != null) {
node= access.getName();
}
}
break;
case ASTNode.SUPER_FIELD_ACCESS:
binding= declaringTypeBinding.getSuperclass();
node= ((SuperFieldAccess) selectedNode).getName();
break;
default:
}
if (node == null) {
return;
}
// add type proposals
if (typeKind != 0) {
if (!JavaModelUtil.is50OrHigher(cu.getJavaProject())) {
typeKind &= ~(TypeKinds.ANNOTATIONS | TypeKinds.ENUMS | TypeKinds.VARIABLES);
}
int relevance= Character.isUpperCase(ASTNodes.getSimpleNameIdentifier(node).charAt(0)) ? IProposalRelevance.VARIABLE_TYPE_PROPOSAL_1 : IProposalRelevance.VARIABLE_TYPE_PROPOSAL_2;
addSimilarTypeProposals(typeKind, cu, node, relevance + 1, proposals);
typeKind &= ~TypeKinds.ANNOTATIONS;
collectNewTypeProposals(cu, node, typeKind, relevance, proposals);
getReorgSubProcessor().addProjectSetupFixProposals(context, problem, node.getFullyQualifiedName(), proposals);
}
if (!suggestVariableProposals) {
return;
}
SimpleName simpleName= node.isSimpleName() ? (SimpleName) node : ((QualifiedName) node).getName();
boolean isWriteAccess= ASTResolving.isWriteAccess(node);
// similar variables
addSimilarVariableProposals(cu, astRoot, binding, resolvedField, simpleName, isWriteAccess, proposals);
if (binding == null) {
addStaticImportFavoriteProposals(context, simpleName, false, proposals);
}
if (resolvedField == null || binding == null || resolvedField.getDeclaringClass() != binding.getTypeDeclaration() && Modifier.isPrivate(resolvedField.getModifiers())) {
// new fields
addNewFieldProposals(cu, astRoot, binding, declaringTypeBinding, simpleName, isWriteAccess, proposals);
// new parameters and local variables
if (binding == null && !isParentSwitchCase(simpleName)) {
addNewVariableProposals(cu, node, simpleName, proposals);
}
}
}
private void addNewVariableProposals(ICompilationUnit cu, Name node, SimpleName simpleName, Collection<T> proposals) {
String name= simpleName.getIdentifier();
BodyDeclaration bodyDeclaration= ASTResolving.findParentBodyDeclaration(node, true);
int type= bodyDeclaration.getNodeType();
if (type == ASTNode.METHOD_DECLARATION) {
int relevance= StubUtility.hasParameterName(cu.getJavaProject(), name) ? IProposalRelevance.CREATE_PARAMETER_PREFIX_OR_SUFFIX_MATCH : IProposalRelevance.CREATE_PARAMETER;
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createparameter_description, BasicElementLabels.getJavaElementName(name));
NewVariableCorrectionProposalCore core= new NewVariableCorrectionProposalCore(label, cu, NewVariableCorrectionProposalCore.PARAM, simpleName, null, relevance);
T p= newVariableCorrectionProposalToT(core, NewVariableProposal1);
if (p != null)
proposals.add(p);
}
if (type == ASTNode.INITIALIZER || type == ASTNode.METHOD_DECLARATION && !ASTResolving.isInsideConstructorInvocation((MethodDeclaration) bodyDeclaration, node)) {
int relevance= StubUtility.hasLocalVariableName(cu.getJavaProject(), name) ? IProposalRelevance.CREATE_LOCAL_PREFIX_OR_SUFFIX_MATCH : IProposalRelevance.CREATE_LOCAL;
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createlocal_description, BasicElementLabels.getJavaElementName(name));
NewVariableCorrectionProposalCore core= new NewVariableCorrectionProposalCore(label, cu, NewVariableCorrectionProposalCore.LOCAL, simpleName, null, relevance);
T p= newVariableCorrectionProposalToT(core, NewVariableProposal2);
if (p != null)
proposals.add(p);
}
if (node.getParent().getNodeType() == ASTNode.ASSIGNMENT) {
Assignment assignment= (Assignment) node.getParent();
if (assignment.getLeftHandSide() == node && assignment.getParent().getNodeType() == ASTNode.EXPRESSION_STATEMENT) {
ASTNode statement= assignment.getParent();
ASTRewrite rewrite= ASTRewrite.create(statement.getAST());
if (ASTNodes.isControlStatementBody(assignment.getParent().getLocationInParent())) {
rewrite.replace(statement, rewrite.getAST().newBlock(), null);
} else {
rewrite.remove(statement, null);
}
String label= CorrectionMessages.UnresolvedElementsSubProcessor_removestatement_description;
ASTRewriteCorrectionProposalCore core= new ASTRewriteCorrectionProposalCore(label, cu, rewrite, IProposalRelevance.REMOVE_ASSIGNMENT);
T proposal= rewriteProposalToT(core, NewVariableProposal3);
if (proposal != null)
proposals.add(proposal);
}
}
}
private void addNewFieldProposals(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding, ITypeBinding declaringTypeBinding, SimpleName simpleName, boolean isWriteAccess, Collection<T> proposals) throws JavaModelException {
// new variables
ICompilationUnit targetCU;
ITypeBinding senderDeclBinding;
if (binding != null) {
senderDeclBinding= binding.getTypeDeclaration();
targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, senderDeclBinding);
} else { // binding is null for accesses without qualifier
senderDeclBinding= declaringTypeBinding;
targetCU= cu;
}
if (!senderDeclBinding.isFromSource() || targetCU == null) {
return;
}
boolean mustBeConst= (ASTResolving.isInsideModifiers(simpleName) || isParentSwitchCase(simpleName)) ;
addNewFieldForType(targetCU, binding, senderDeclBinding, simpleName, isWriteAccess, mustBeConst, proposals);
if (binding == null && senderDeclBinding.isNested()) {
ASTNode anonymDecl= astRoot.findDeclaringNode(senderDeclBinding);
if (anonymDecl != null) {
ITypeBinding bind= Bindings.getBindingOfParentType(anonymDecl.getParent());
if (!bind.isAnonymous()) {
addNewFieldForType(targetCU, bind, bind, simpleName, isWriteAccess, mustBeConst, proposals);
}
}
}
}
private boolean isParentSwitchCase(SimpleName simpleName) {
if (simpleName != null) {
return (simpleName.getParent() instanceof SwitchCase);
}
return false;
}
private void addNewFieldForType(ICompilationUnit targetCU, ITypeBinding binding, ITypeBinding senderDeclBinding, SimpleName simpleName, boolean isWriteAccess, boolean mustBeConst, Collection<T> proposals) {
String name= simpleName.getIdentifier();
String nameLabel= BasicElementLabels.getJavaElementName(name);
String label;
if (senderDeclBinding.isEnum() && !isWriteAccess) {
label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createenum_description, new Object[] { nameLabel, ASTResolving.getTypeSignature(senderDeclBinding) });
NewVariableCorrectionProposalCore core= new NewVariableCorrectionProposalCore(label, targetCU, NewVariableCorrectionProposalCore.ENUM_CONST, simpleName, senderDeclBinding, 10);
T p1= newVariableCorrectionProposalToT(core, NewFieldForTypeProposal1);
if (p1 != null)
proposals.add(p1);
} else {
if (!mustBeConst) {
int fieldRelevance= StubUtility.hasFieldName(targetCU.getJavaProject(), name) ? IProposalRelevance.CREATE_FIELD_PREFIX_OR_SUFFIX_MATCH : IProposalRelevance.CREATE_FIELD;
int uid;
if (binding == null) {
label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createfield_description, nameLabel);
uid= NewFieldForTypeProposal2;
} else {
label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createfield_other_description, new Object[] { nameLabel, ASTResolving.getTypeSignature(senderDeclBinding) } );
uid= NewFieldForTypeProposal3;
}
NewVariableCorrectionProposalCore core= new NewVariableCorrectionProposalCore(label, targetCU, NewVariableCorrectionProposalCore.FIELD, simpleName, senderDeclBinding, fieldRelevance);
T prop= newVariableCorrectionProposalToT(core, uid);
if (prop != null)
proposals.add(prop);
}
if (!isWriteAccess && !senderDeclBinding.isAnonymous()) {
int uid;
if (binding == null) {
label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createconst_description, nameLabel);
uid= NewFieldForTypeProposal4;
} else {
label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createconst_other_description, new Object[] { nameLabel, ASTResolving.getTypeSignature(senderDeclBinding) } );
uid= NewFieldForTypeProposal5;
}
int constRelevance= StubUtility.hasConstantName(targetCU.getJavaProject(), name) ? IProposalRelevance.CREATE_CONSTANT_PREFIX_OR_SUFFIX_MATCH : IProposalRelevance.CREATE_CONSTANT;
NewVariableCorrectionProposalCore core= new NewVariableCorrectionProposalCore(label, targetCU, NewVariableCorrectionProposalCore.CONST_FIELD, simpleName, senderDeclBinding, constRelevance);
T prop= newVariableCorrectionProposalToT(core, uid);
if (prop != null)
proposals.add(prop);
}
}
}
private void addSimilarVariableProposals(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding, IVariableBinding resolvedField, SimpleName node, boolean isWriteAccess, Collection<T> proposals) {
int kind= ScopeAnalyzer.VARIABLES | ScopeAnalyzer.CHECK_VISIBILITY;
if (!isWriteAccess) {
kind |= ScopeAnalyzer.METHODS; // also try to find similar methods
}
IBinding[] varsAndMethodsInScope= (new ScopeAnalyzer(astRoot)).getDeclarationsInScope(node, kind);
if (varsAndMethodsInScope.length > 0) {
// avoid corrections like int i= i;
String otherNameInAssign= null;
// help with x.getString() -> y.getString()
String methodSenderName= null;
String fieldSenderName= null;
ASTNode parent= node.getParent();
switch (parent.getNodeType()) {
case ASTNode.VARIABLE_DECLARATION_FRAGMENT:
// node must be initializer
otherNameInAssign= ((VariableDeclarationFragment) parent).getName().getIdentifier();
break;
case ASTNode.ASSIGNMENT:
Assignment assignment= (Assignment) parent;
if (isWriteAccess && assignment.getRightHandSide() instanceof SimpleName rightSide) {
otherNameInAssign= rightSide.getIdentifier();
} else if (!isWriteAccess && assignment.getLeftHandSide() instanceof SimpleName leftSide) {
otherNameInAssign= leftSide.getIdentifier();
}
break;
case ASTNode.METHOD_INVOCATION:
MethodInvocation inv= (MethodInvocation) parent;
if (inv.getExpression() == node) {
methodSenderName= inv.getName().getIdentifier();
}
break;
case ASTNode.QUALIFIED_NAME:
QualifiedName qualName= (QualifiedName) parent;
if (qualName.getQualifier() == node) {
fieldSenderName= qualName.getName().getIdentifier();
}
break;
}
ITypeBinding guessedType= ASTResolving.guessBindingForReference(node);
ITypeBinding objectBinding= astRoot.getAST().resolveWellKnownType("java.lang.Object"); //$NON-NLS-1$
String identifier= node.getIdentifier();
boolean isInStaticContext= ASTResolving.isInStaticContext(node);
ArrayList<T> newProposals= new ArrayList<>(51);
loop: for (int i= 0; i < varsAndMethodsInScope.length && newProposals.size() <= 50; i++) {
IBinding varOrMeth= varsAndMethodsInScope[i];
if (varOrMeth instanceof IVariableBinding curr) {
String currName= curr.getName();
if (currName.equals(otherNameInAssign)) {
continue loop;
}
if (resolvedField != null && Bindings.equals(resolvedField, curr)) {
continue loop;
}
boolean isFinal= Modifier.isFinal(curr.getModifiers());
if (isFinal && curr.isField() && isWriteAccess) {
continue loop;
}
if (isInStaticContext && !Modifier.isStatic(curr.getModifiers()) && curr.isField()) {
continue loop;
}
int relevance= IProposalRelevance.SIMILAR_VARIABLE_PROPOSAL;
if (NameMatcher.isSimilarName(currName, identifier)) {
relevance += 3; // variable with a similar name than the unresolved variable
}
if (currName.equalsIgnoreCase(identifier)) {
relevance+= 5;
}
ITypeBinding varType= curr.getType();
if (varType != null) {
if (guessedType != null && guessedType != objectBinding) { // too many result with object
// variable type is compatible with the guessed type
if (!isWriteAccess && canAssign(varType, guessedType)
|| isWriteAccess && canAssign(guessedType, varType)) {
relevance += 2; // unresolved variable can be assign to this variable
}
}
if (methodSenderName != null && hasMethodWithName(varType, methodSenderName)) {
relevance += 2;
}
if (fieldSenderName != null && hasFieldWithName(varType, fieldSenderName)) {
relevance += 2;
}
}
if (relevance > 0) {
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changevariable_description, BasicElementLabels.getJavaElementName(currName));
RenameNodeCorrectionProposalCore core= new RenameNodeCorrectionProposalCore(label, cu, node.getStartPosition(), node.getLength(), currName, relevance);
T prop= renameNodeCorrectionProposalToT(core, SimilarVariableProposal1);
if (prop != null)
newProposals.add(prop);
}
} else if (varOrMeth instanceof IMethodBinding curr) {
if (!curr.isConstructor() && guessedType != null && canAssign(curr.getReturnType(), guessedType)) {
if (NameMatcher.isSimilarName(curr.getName(), identifier)) {
AST ast= astRoot.getAST();
ASTRewrite rewrite= ASTRewrite.create(ast);
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changetomethod_description, ASTResolving.getMethodSignature(curr));
LinkedCorrectionProposalCore proposal= new LinkedCorrectionProposalCore(label, cu, rewrite, IProposalRelevance.CHANGE_TO_METHOD);
MethodInvocation newInv= ast.newMethodInvocation();
newInv.setName(ast.newSimpleName(curr.getName()));
for (ITypeBinding parameterType : curr.getParameterTypes()) {
ASTNode arg= ASTNodeFactory.newDefaultExpression(ast, parameterType);
newInv.arguments().add(arg);
proposal.addLinkedPosition(rewrite.track(arg), false, null);
}
rewrite.replace(node, newInv, null);
T proposalT= linkedProposalToT(proposal, SimilarVariableProposal2);
if (proposalT != null)
newProposals.add(proposalT);
}
}
}
}
if (newProposals.size() <= 50)
proposals.addAll(newProposals);
}
if (binding != null && binding.isArray()) {
String idLength= "length"; //$NON-NLS-1$
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changevariable_description, idLength);
RenameNodeCorrectionProposalCore core= new RenameNodeCorrectionProposalCore(label, cu, node.getStartPosition(), node.getLength(), idLength, IProposalRelevance.CHANGE_VARIABLE);
T prop= renameNodeProposalToT(core, SimilarVariableProposal3);
if (prop != null)
proposals.add(prop);
}
}
private boolean canAssign(ITypeBinding returnType, ITypeBinding guessedType) {
return returnType.isAssignmentCompatible(guessedType);
}
private boolean hasMethodWithName(ITypeBinding typeBinding, String name) {
for (IVariableBinding field : typeBinding.getDeclaredFields()) {
if (field.getName().equals(name)) {
return true;
}
}
ITypeBinding superclass= typeBinding.getSuperclass();
if (superclass != null) {
return hasMethodWithName(superclass, name);
}
return false;
}
private boolean hasFieldWithName(ITypeBinding typeBinding, String name) {
for (IMethodBinding method : typeBinding.getDeclaredMethods()) {
if (method.getName().equals(name)) {
return true;
}
}
ITypeBinding superclass= typeBinding.getSuperclass();
if (superclass != null) {
return hasMethodWithName(superclass, name);
}
return false;
}
private int evauateTypeKind(ASTNode node, IJavaProject project) {
int kind= ASTResolving.getPossibleTypeKinds(node, JavaModelUtil.is50OrHigher(project));
return kind;
}
public void collectTypeProposals(IInvocationContextCore context, IProblemLocationCore problem, Collection<T> proposals) throws CoreException {
ICompilationUnit cu= context.getCompilationUnit();
ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
if (selectedNode == null) {
return;
}
IJavaProject javaProject= cu.getJavaProject();
int kind= evauateTypeKind(selectedNode, javaProject);
if (kind == TypeKinds.REF_TYPES) {
SimpleName s= addEnhancedForWithoutTypeProposals(cu, selectedNode, proposals);
if (s != null && Character.isLowerCase(s.getFullyQualifiedName().charAt(0))) {
return;
}
}
while (selectedNode.getLocationInParent() == QualifiedName.NAME_PROPERTY) {
selectedNode= selectedNode.getParent();
}
Name node= null;
if (selectedNode instanceof SimpleType selectedType) {
node= selectedType.getName();
} else if (selectedNode instanceof NameQualifiedType nameQualified) {
node= nameQualified.getName();
} else if (selectedNode instanceof ArrayType arr) {
Type elementType= arr.getElementType();
if (elementType.isSimpleType()) {
node= ((SimpleType) elementType).getName();
} else if (elementType.isNameQualifiedType()) {
node= ((NameQualifiedType) elementType).getName();
} else {
return;
}
} else if (selectedNode instanceof Name) {
node= (Name) selectedNode;
} else {
return;
}
if (node instanceof SimpleName && !JavaModelUtil.is11OrHigher(javaProject)) {
boolean isVarTypeProblem= false;
if (problem.getProblemId() == IProblem.VarIsNotAllowedHere) {
isVarTypeProblem= true;
} else {
String[] args= problem.getProblemArguments();
if (args != null && args.length > 0) {
String name= args[0];
if ("var".equals(name)) { //$NON-NLS-1$
isVarTypeProblem= true;
}
}
}
if (isVarTypeProblem) {
// check if "var" is present as lambda parameter type
boolean isVarInLambdaParamType= false;
ASTNode parent= node.getParent();
if (parent instanceof SimpleType && parent.getLocationInParent() == SingleVariableDeclaration.TYPE_PROPERTY) {
parent= parent.getParent();
if (parent.getLocationInParent() == LambdaExpression.PARAMETERS_PROPERTY) {
isVarInLambdaParamType= true;
}
}
ReorgCorrectionsBaseSubProcessor<T> reorg= getReorgSubProcessor();
if (reorg != null) {
if (isVarInLambdaParamType) {
getReorgSubProcessor().addNeedHigherComplianceProposals(context, problem, proposals, JavaCore.VERSION_11);
} else {
getReorgSubProcessor().addNeedHigherComplianceProposals(context, problem, proposals, JavaCore.VERSION_10);
}
}
}
}
// change to similar type proposals
addSimilarTypeProposals(kind, cu, node, IProposalRelevance.SIMILAR_TYPE, proposals);
while (node.getParent() instanceof QualifiedName) {
node= (Name) node.getParent();
}
IModuleDescription moduleDescription= cu.getModule();
if (moduleDescription != null && moduleDescription.exists()
&& javaProject != null && JavaModelUtil.is9OrHigher(javaProject)) {
ICompilationUnit moduleCompilationUnit= moduleDescription.getCompilationUnit();
if (cu.equals(moduleCompilationUnit)) {
collectRequiresModuleProposals(cu, node, kind, proposals, false);
ASTNode parentNode= node.getParent();
if (parentNode instanceof ProvidesDirective providesDir) {
Name serviceName= providesDir.getName();
IBinding binding= serviceName.resolveBinding();
if (binding instanceof ITypeBinding typeBinding) {
if (typeBinding.isClass()) {
kind= TypeKinds.CLASSES;
} else if (typeBinding.isInterface()) {
kind= TypeKinds.CLASSES | TypeKinds.INTERFACES;
}
}
}
}
}
if (selectedNode != node) {
kind= evauateTypeKind(node, javaProject);
}
if ((kind & (TypeKinds.CLASSES | TypeKinds.INTERFACES)) != 0) {
kind &= ~TypeKinds.ANNOTATIONS; // only propose annotations when there are no other suggestions
}
collectNewTypeProposals(cu, node, kind, IProposalRelevance.NEW_TYPE, proposals);
getReorgSubProcessor().addProjectSetupFixProposals(context, problem, node.getFullyQualifiedName(), proposals);
}
private SimpleName addEnhancedForWithoutTypeProposals(ICompilationUnit cu, ASTNode selectedNode, Collection<T> proposals) {
if (selectedNode instanceof SimpleName simpleName && (selectedNode.getLocationInParent() == SimpleType.NAME_PROPERTY || selectedNode.getLocationInParent() == NameQualifiedType.NAME_PROPERTY)) {
ASTNode type= selectedNode.getParent();
if (type.getLocationInParent() == SingleVariableDeclaration.TYPE_PROPERTY) {
SingleVariableDeclaration svd= (SingleVariableDeclaration) type.getParent();
if (svd.getLocationInParent() == EnhancedForStatement.PARAMETER_PROPERTY) {
if (svd.getName().getLength() == 0) {
String name= simpleName.getIdentifier();
int relevance= StubUtility.hasLocalVariableName(cu.getJavaProject(), name) ? 10 : 7;
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_create_loop_variable_description, BasicElementLabels.getJavaElementName(name));
NewVariableCorrectionProposalCore core= new NewVariableCorrectionProposalCore(label, cu, NewVariableCorrectionProposalCore.LOCAL, simpleName, null, relevance);
T prop= newVariableCorrectionProposalToT(core, EnhancedForWithoutTypeProposal1);
if (prop != null)
proposals.add(prop);
return simpleName;
}
}
}
}
return null;
}
protected void addNullityAnnotationTypesProposals(ICompilationUnit cu, Name node, Collection<T> proposals) throws CoreException {
ASTNode parent= node.getParent();
boolean isAnnotationName= parent instanceof Annotation && ((Annotation) parent).getTypeNameProperty() == node.getLocationInParent();
if (!isAnnotationName) {
boolean isImportName= parent instanceof ImportDeclaration && ImportDeclaration.NAME_PROPERTY == node.getLocationInParent();
if (!isImportName)
return;
}
final IJavaProject javaProject= cu.getJavaProject();
String name= node.getFullyQualifiedName();
String nullityAnnotation= null;
String[] annotationNameOptions= { JavaCore.COMPILER_NULLABLE_ANNOTATION_NAME, JavaCore.COMPILER_NONNULL_ANNOTATION_NAME, JavaCore.COMPILER_NONNULL_BY_DEFAULT_ANNOTATION_NAME };
Hashtable<String, String> defaultOptions= JavaCore.getDefaultOptions();
for (String annotationNameOption : annotationNameOptions) {
String annotationName= javaProject.getOption(annotationNameOption, true);
if (! annotationName.equals(defaultOptions.get(annotationNameOption)))
return;
if (JavaModelUtil.isMatchingName(name, annotationName)) {
nullityAnnotation= annotationName;
}
}
if (nullityAnnotation == null)
return;
if (javaProject.findType(defaultOptions.get(annotationNameOptions[0])) != null)
return;
String version= JavaModelUtil.is1d8OrHigher(javaProject) ? "2" : "[1.1.0,2.0.0)"; //$NON-NLS-1$ //$NON-NLS-2$
Bundle[] annotationsBundles= JavaManipulationPlugin.getDefault().getBundles("org.eclipse.jdt.annotation", version); //$NON-NLS-1$
if (annotationsBundles == null)
return;
if (! cu.getJavaProject().getProject().hasNature("org.eclipse.pde.PluginNature")) //$NON-NLS-1$
addCopyAnnotationsJarProposal(cu, node, nullityAnnotation, annotationsBundles[0], proposals);
}
// 500
private void addCopyAnnotationsJarProposal(final ICompilationUnit cu, final Name name, final String fullyQualifiedName, Bundle annotationsBundle, Collection<T> proposals) {
final IJavaProject javaProject= cu.getJavaProject();
Optional<File> bundleFileLocation= FileLocator.getBundleFileLocation(annotationsBundle);
if (bundleFileLocation.isEmpty()) {
return;
}
File bundleFile= bundleFileLocation.get();
if (!bundleFile.isFile() || !bundleFile.canRead())
return; // we only support a JAR'd bundle, so this won't work in the runtime if you have org.eclipse.jdt.annotation in source.
final String changeName= CorrectionMessages.UnresolvedElementsSubProcessor_copy_annotation_jar_description;
ChangeCorrectionProposalCore proposal= new ChangeCorrectionProposalCore(changeName, null, IProposalRelevance.COPY_ANNOTATION_JAR) {
@Override
protected Change createChange() throws CoreException {
final IFile file= javaProject.getProject().getFile(bundleFile.getName());
ResourceChange copyFileChange= new ResourceChange() {
@Override
public Change perform(IProgressMonitor pm) throws CoreException {
try {
if (file.exists()) {
file.delete(false, pm);
}
file.create(new ByteArrayInputStream(Files.readAllBytes(bundleFile.toPath())), false, pm);
return new DeleteResourceChange(file.getFullPath(), false);
} catch (IOException e) {
throw new CoreException(new Status(IStatus.ERROR, JavaManipulationPlugin.getPluginId(), e.getMessage()));
}
}
@Override
public String getName() {
return changeName;
}
@Override
protected IResource getModifiedResource() {
return javaProject.getProject();
}
};
ClasspathChange addEntryChange= ClasspathChange.addEntryChange(javaProject, JavaCore.newLibraryEntry(file.getFullPath(), null, null));
CompilationUnitChange addImportChange= createAddImportChange(cu, name, fullyQualifiedName);
return new CompositeChange(changeName, new Change[] { copyFileChange, addEntryChange, addImportChange});
}
@Override
public Object getAdditionalProposalInfo(IProgressMonitor monitor) {
return CorrectionMessages.UnresolvedElementsSubProcessor_copy_annotation_jar_info;
}
};
T prop= changeCorrectionProposalToT(proposal, CopyAnnotationsJarProposal1);
if (prop != null)
proposals.add(prop);
}
static CompilationUnitChange createAddImportChange(ICompilationUnit cu, Name name, String fullyQualifiedName) throws CoreException {
String[] args= { BasicElementLabels.getJavaElementName(Signature.getSimpleName(fullyQualifiedName)),
BasicElementLabels.getJavaElementName(Signature.getQualifier(fullyQualifiedName)) };
String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_importtype_description, args);
CompilationUnitChange cuChange= new CompilationUnitChange(label, cu);
ImportRewrite importRewrite= StubUtility.createImportRewrite((CompilationUnit) name.getRoot(), true);
importRewrite.addImport(fullyQualifiedName);
cuChange.setEdit(importRewrite.rewriteImports(null));
return cuChange;
}
// 600
private void addSimilarTypeProposals(int kind, ICompilationUnit cu, Name node, int relevance, Collection<T> proposals) throws CoreException {
SimilarElement[] elements= SimilarElementsRequestor.findSimilarElement(cu, node, kind);
// try to resolve type in context -> highest severity
String resolvedTypeName= null;
ITypeBinding binding= ASTResolving.guessBindingForTypeReference(node);
ITypeBinding simpleBinding= null;
if (binding != null) {
simpleBinding= binding;
if (simpleBinding.isArray()) {
simpleBinding= simpleBinding.getElementType();
}
simpleBinding= simpleBinding.getTypeDeclaration();
if (!simpleBinding.isRecovered()) {
resolvedTypeName= simpleBinding.getQualifiedName();
T proposal= createTypeRefChangeProposal(cu, resolvedTypeName, node, relevance + 2, elements.length);
ChangeCorrectionProposalCore original= getOriginalProposalFromT(proposal);
T compositeProposal= getCompositeChangeProposal(proposal);
ChangeCorrectionProposalCore compositeOriginal= getOriginalProposalFromT(compositeProposal);
if (compositeProposal != null) {
proposals.add(compositeProposal);
} else if (proposal != null){
proposals.add(proposal);
}
if (original instanceof AddImportCorrectionProposalCore) {
int rel= relevance + elements.length + 2;
original.setRelevance(rel);
if (compositeProposal != null) {
compositeOriginal.setRelevance(rel);
}
}
if (binding.isParameterizedType()
&& (node.getParent() instanceof SimpleType || node.getParent() instanceof NameQualifiedType)
&& !(node.getParent().getParent() instanceof Type)) {
T toAdd= createTypeRefChangeFullProposal(cu, binding, node, relevance + 5, TypeLocation.UNKNOWN);
if (toAdd != null)
proposals.add(toAdd);
}
}
} else {
ASTNode normalizedNode= ASTNodes.getNormalizedNode(node);
if (!(normalizedNode.getParent() instanceof Type) && node.getParent() != normalizedNode) {
ITypeBinding normBinding= ASTResolving.guessBindingForTypeReference(normalizedNode);
if (normBinding != null && !normBinding.isRecovered()) {
T toAdd= createTypeRefChangeFullProposal(cu, normBinding, normalizedNode, relevance + 5, TypeLocation.UNKNOWN);
if (toAdd != null)
proposals.add(toAdd);
}
}
}
// add all similar elements
for (SimilarElement elem : elements) {
if ((elem.getKind() & TypeKinds.ALL_TYPES) != 0) {
String fullName= elem.getName();
if (!fullName.equals(resolvedTypeName)) {
if (simpleBinding != null && !simpleBinding.isPrimitive()) {
// If we have an expected type, we should verify that any classes we suggest to import
// inherit directly or indirectly from the type
ITypeBinding qualifiedTypeBinding= null;
try {
IJavaProject focus= simpleBinding.getJavaElement().getJavaProject();
IType javaElementType= focus.findType(fullName);
if (javaElementType != null) {
ASTParser parser= ASTParser.newParser(IASTSharedValues.SHARED_AST_LEVEL);
parser.setProject(focus);
IBinding[] bindings= parser.createBindings(new IJavaElement[] {javaElementType} , null);
qualifiedTypeBinding=(ITypeBinding)bindings[0];
}
} catch (JavaModelException e) {
// fall through
}
if (qualifiedTypeBinding != null) {
if (!qualifiedTypeBinding.getName().equals(simpleBinding.getName()) && !qualifiedTypeBinding.isGenericType() &&
!qualifiedTypeBinding.isParameterizedType() && !qualifiedTypeBinding.isWildcardType() &&
!qualifiedTypeBinding.isRawType() && !qualifiedTypeBinding.isRecord() &&
!qualifiedTypeBinding.isRecovered() && !isInherited(qualifiedTypeBinding, simpleBinding)) {
continue;
}
}
}
T cuProposal= createTypeRefChangeProposal(cu, fullName, node, relevance, elements.length);
T compositeProposal= getCompositeChangeProposal(cuProposal);
if (compositeProposal != null) {
proposals.add(compositeProposal);
} else if (cuProposal != null) {
proposals.add(cuProposal);
}
}
}
}
if (elements.length == 0) {
collectRequiresModuleProposals(cu, node, IProposalRelevance.IMPORT_NOT_FOUND_ADD_REQUIRES_MODULE, proposals, true);
}
}