/
StaticTypeCheckingVisitor.java
6688 lines (6205 loc) · 345 KB
/
StaticTypeCheckingVisitor.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.codehaus.groovy.transform.stc;
import groovy.lang.Closure;
import groovy.lang.DelegatesTo;
import groovy.lang.IntRange;
import groovy.lang.Range;
import groovy.transform.NamedParam;
import groovy.transform.NamedParams;
import groovy.transform.TypeChecked;
import groovy.transform.TypeCheckingMode;
import groovy.transform.stc.ClosureParams;
import groovy.transform.stc.ClosureSignatureConflictResolver;
import groovy.transform.stc.ClosureSignatureHint;
import org.codehaus.groovy.GroovyBugError;
import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.ast.AnnotatedNode;
import org.codehaus.groovy.ast.AnnotationNode;
import org.codehaus.groovy.ast.ClassCodeVisitorSupport;
import org.codehaus.groovy.ast.ClassHelper;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.ConstructorNode;
import org.codehaus.groovy.ast.DynamicVariable;
import org.codehaus.groovy.ast.FieldNode;
import org.codehaus.groovy.ast.GenericsType;
import org.codehaus.groovy.ast.GenericsType.GenericsTypeName;
import org.codehaus.groovy.ast.InnerClassNode;
import org.codehaus.groovy.ast.MethodNode;
import org.codehaus.groovy.ast.Parameter;
import org.codehaus.groovy.ast.PropertyNode;
import org.codehaus.groovy.ast.Variable;
import org.codehaus.groovy.ast.expr.AnnotationConstantExpression;
import org.codehaus.groovy.ast.expr.ArgumentListExpression;
import org.codehaus.groovy.ast.expr.ArrayExpression;
import org.codehaus.groovy.ast.expr.AttributeExpression;
import org.codehaus.groovy.ast.expr.BinaryExpression;
import org.codehaus.groovy.ast.expr.BitwiseNegationExpression;
import org.codehaus.groovy.ast.expr.CastExpression;
import org.codehaus.groovy.ast.expr.ClassExpression;
import org.codehaus.groovy.ast.expr.ClosureExpression;
import org.codehaus.groovy.ast.expr.ClosureListExpression;
import org.codehaus.groovy.ast.expr.ConstantExpression;
import org.codehaus.groovy.ast.expr.ConstructorCallExpression;
import org.codehaus.groovy.ast.expr.DeclarationExpression;
import org.codehaus.groovy.ast.expr.EmptyExpression;
import org.codehaus.groovy.ast.expr.Expression;
import org.codehaus.groovy.ast.expr.FieldExpression;
import org.codehaus.groovy.ast.expr.ListExpression;
import org.codehaus.groovy.ast.expr.MapEntryExpression;
import org.codehaus.groovy.ast.expr.MapExpression;
import org.codehaus.groovy.ast.expr.MethodCall;
import org.codehaus.groovy.ast.expr.MethodCallExpression;
import org.codehaus.groovy.ast.expr.MethodPointerExpression;
import org.codehaus.groovy.ast.expr.NotExpression;
import org.codehaus.groovy.ast.expr.PostfixExpression;
import org.codehaus.groovy.ast.expr.PrefixExpression;
import org.codehaus.groovy.ast.expr.PropertyExpression;
import org.codehaus.groovy.ast.expr.RangeExpression;
import org.codehaus.groovy.ast.expr.SpreadExpression;
import org.codehaus.groovy.ast.expr.StaticMethodCallExpression;
import org.codehaus.groovy.ast.expr.TernaryExpression;
import org.codehaus.groovy.ast.expr.TupleExpression;
import org.codehaus.groovy.ast.expr.UnaryMinusExpression;
import org.codehaus.groovy.ast.expr.UnaryPlusExpression;
import org.codehaus.groovy.ast.expr.VariableExpression;
import org.codehaus.groovy.ast.stmt.BlockStatement;
import org.codehaus.groovy.ast.stmt.CaseStatement;
import org.codehaus.groovy.ast.stmt.CatchStatement;
import org.codehaus.groovy.ast.stmt.EmptyStatement;
import org.codehaus.groovy.ast.stmt.ExpressionStatement;
import org.codehaus.groovy.ast.stmt.ForStatement;
import org.codehaus.groovy.ast.stmt.IfStatement;
import org.codehaus.groovy.ast.stmt.ReturnStatement;
import org.codehaus.groovy.ast.stmt.Statement;
import org.codehaus.groovy.ast.stmt.SwitchStatement;
import org.codehaus.groovy.ast.stmt.TryCatchStatement;
import org.codehaus.groovy.ast.stmt.WhileStatement;
import org.codehaus.groovy.ast.tools.GeneralUtils;
import org.codehaus.groovy.ast.tools.GenericsUtils;
import org.codehaus.groovy.ast.tools.WideningCategories;
import org.codehaus.groovy.classgen.ReturnAdder;
import org.codehaus.groovy.classgen.asm.InvocationWriter;
import org.codehaus.groovy.control.CompilationUnit;
import org.codehaus.groovy.control.ErrorCollector;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.control.messages.SyntaxErrorMessage;
import org.codehaus.groovy.runtime.DefaultGroovyMethods;
import org.codehaus.groovy.runtime.MetaClassHelper;
import org.codehaus.groovy.syntax.SyntaxException;
import org.codehaus.groovy.syntax.Token;
import org.codehaus.groovy.syntax.TokenUtil;
import org.codehaus.groovy.syntax.Types;
import org.codehaus.groovy.transform.StaticTypesTransformation;
import org.codehaus.groovy.transform.sc.StaticCompilationMetadataKeys;
import org.codehaus.groovy.transform.trait.Traits;
import org.codehaus.groovy.util.ListHashMap;
import groovyjarjarasm.asm.Opcodes;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.BiPredicate;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.IntStream;
import static org.apache.groovy.ast.tools.ClassNodeUtils.samePackageName;
import static org.codehaus.groovy.ast.ClassHelper.BigDecimal_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.BigInteger_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Boolean_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Byte_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.CLASS_Type;
import static org.codehaus.groovy.ast.ClassHelper.CLOSURE_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Character_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.DYNAMIC_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Double_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Float_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.GROOVY_OBJECT_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.GSTRING_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Integer_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Iterator_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.LIST_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Long_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.MAP_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Number_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.OBJECT_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.PATTERN_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.RANGE_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.STRING_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.Short_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.VOID_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.boolean_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.byte_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.char_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.double_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.findSAM;
import static org.codehaus.groovy.ast.ClassHelper.float_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.getNextSuperClass;
import static org.codehaus.groovy.ast.ClassHelper.getUnwrapper;
import static org.codehaus.groovy.ast.ClassHelper.getWrapper;
import static org.codehaus.groovy.ast.ClassHelper.int_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.isNumberType;
import static org.codehaus.groovy.ast.ClassHelper.isPrimitiveType;
import static org.codehaus.groovy.ast.ClassHelper.isSAMType;
import static org.codehaus.groovy.ast.ClassHelper.long_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.make;
import static org.codehaus.groovy.ast.ClassHelper.short_TYPE;
import static org.codehaus.groovy.ast.ClassHelper.void_WRAPPER_TYPE;
import static org.codehaus.groovy.ast.tools.ClosureUtils.getParametersSafe;
import static org.codehaus.groovy.ast.tools.ClosureUtils.hasImplicitParameter;
import static org.codehaus.groovy.ast.tools.GeneralUtils.args;
import static org.codehaus.groovy.ast.tools.GeneralUtils.binX;
import static org.codehaus.groovy.ast.tools.GeneralUtils.callX;
import static org.codehaus.groovy.ast.tools.GeneralUtils.castX;
import static org.codehaus.groovy.ast.tools.GeneralUtils.constX;
import static org.codehaus.groovy.ast.tools.GeneralUtils.isOrImplements;
import static org.codehaus.groovy.ast.tools.GeneralUtils.localVarX;
import static org.codehaus.groovy.ast.tools.GeneralUtils.thisPropX;
import static org.codehaus.groovy.ast.tools.GeneralUtils.varX;
import static org.codehaus.groovy.ast.tools.GenericsUtils.toGenericTypesString;
import static org.codehaus.groovy.ast.tools.WideningCategories.isBigDecCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.isBigIntCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.isDouble;
import static org.codehaus.groovy.ast.tools.WideningCategories.isDoubleCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.isFloat;
import static org.codehaus.groovy.ast.tools.WideningCategories.isFloatingCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.isIntCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.isLongCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.isNumberCategory;
import static org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound;
import static org.codehaus.groovy.classgen.AsmClassGenerator.MINIMUM_BYTECODE_VERSION;
import static org.codehaus.groovy.runtime.DefaultGroovyMethods.asBoolean;
import static org.codehaus.groovy.syntax.Types.ASSIGN;
import static org.codehaus.groovy.syntax.Types.ASSIGNMENT_OPERATOR;
import static org.codehaus.groovy.syntax.Types.COMPARE_EQUAL;
import static org.codehaus.groovy.syntax.Types.COMPARE_IDENTICAL;
import static org.codehaus.groovy.syntax.Types.COMPARE_NOT_EQUAL;
import static org.codehaus.groovy.syntax.Types.COMPARE_TO;
import static org.codehaus.groovy.syntax.Types.DIVIDE;
import static org.codehaus.groovy.syntax.Types.DIVIDE_EQUAL;
import static org.codehaus.groovy.syntax.Types.EQUAL;
import static org.codehaus.groovy.syntax.Types.FIND_REGEX;
import static org.codehaus.groovy.syntax.Types.INTDIV;
import static org.codehaus.groovy.syntax.Types.INTDIV_EQUAL;
import static org.codehaus.groovy.syntax.Types.KEYWORD_IN;
import static org.codehaus.groovy.syntax.Types.KEYWORD_INSTANCEOF;
import static org.codehaus.groovy.syntax.Types.LEFT_SQUARE_BRACKET;
import static org.codehaus.groovy.syntax.Types.LOGICAL_OR;
import static org.codehaus.groovy.syntax.Types.MINUS_MINUS;
import static org.codehaus.groovy.syntax.Types.MOD;
import static org.codehaus.groovy.syntax.Types.MOD_EQUAL;
import static org.codehaus.groovy.syntax.Types.PLUS_PLUS;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.ArrayList_TYPE;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.Collection_TYPE;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.Matcher_TYPE;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.NUMBER_OPS;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.UNKNOWN_PARAMETER_TYPE;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.addMethodLevelDeclaredGenerics;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.allParametersAndArgumentsMatch;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsConnections;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsContext;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsContextToParameterClass;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.boundUnboundedWildcards;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.checkCompatibleAssignmentTypes;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.checkPossibleLossOfPrecision;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.chooseBestMethod;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.evaluateExpression;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.extractGenericsConnections;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.extractGenericsParameterMapOfThis;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.findDGMMethodsByNameAndArguments;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.findSetters;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.findTargetVariable;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.fullyResolveType;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.getCombinedBoundType;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.getGenericsWithoutArray;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.getOperationName;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.implementsInterfaceOrIsSubclassOf;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isArrayOp;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isAssignableTo;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isAssignment;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isBeingCompiled;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isBitOperator;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isBoolIntrinsicOp;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isClassClassNodeWrappingConcreteType;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isCompareToBoolean;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isOperationInGroup;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isParameterizedWithGStringOrGStringString;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isParameterizedWithString;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isPowerOperator;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isShiftOperation;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isTraitSelf;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isUsingGenericsOrIsArrayUsingGenerics;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isUsingUncheckedGenerics;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isVargs;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.isWildcardLeftHandSide;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.lastArgMatchesVarg;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.missesGenericsTypes;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.prettyPrintType;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.prettyPrintTypeName;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.resolveClassNodeGenerics;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.toMethodParametersString;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.typeCheckMethodArgumentWithGenerics;
import static org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.typeCheckMethodsWithGenerics;
/**
* The main class code visitor responsible for static type checking. It will perform various inspections like checking
* assignment types, type inference, ... Eventually, class nodes may be annotated with inferred type information.
*/
public class StaticTypeCheckingVisitor extends ClassCodeVisitorSupport {
private static final boolean DEBUG_GENERATED_CODE = Boolean.getBoolean("groovy.stc.debug");
private static final AtomicLong UNIQUE_LONG = new AtomicLong();
protected static final Object ERROR_COLLECTOR = ErrorCollector.class;
protected static final ClassNode ITERABLE_TYPE = ClassHelper.make(Iterable.class);
protected static final List<MethodNode> EMPTY_METHODNODE_LIST = Collections.emptyList();
protected static final ClassNode TYPECHECKED_CLASSNODE = ClassHelper.make(TypeChecked.class);
protected static final ClassNode[] TYPECHECKING_ANNOTATIONS = new ClassNode[]{TYPECHECKED_CLASSNODE};
protected static final ClassNode TYPECHECKING_INFO_NODE = ClassHelper.make(TypeChecked.TypeCheckingInfo.class);
protected static final ClassNode DGM_CLASSNODE = ClassHelper.make(DefaultGroovyMethods.class);
protected static final int CURRENT_SIGNATURE_PROTOCOL_VERSION = 1;
protected static final Expression CURRENT_SIGNATURE_PROTOCOL = new ConstantExpression(CURRENT_SIGNATURE_PROTOCOL_VERSION, true);
protected static final MethodNode GET_DELEGATE = CLOSURE_TYPE.getGetterMethod("getDelegate");
protected static final MethodNode GET_OWNER = CLOSURE_TYPE.getGetterMethod("getOwner");
protected static final MethodNode GET_THISOBJECT = CLOSURE_TYPE.getGetterMethod("getThisObject");
protected static final ClassNode DELEGATES_TO = ClassHelper.make(DelegatesTo.class);
protected static final ClassNode DELEGATES_TO_TARGET = ClassHelper.make(DelegatesTo.Target.class);
protected static final ClassNode LINKEDHASHMAP_CLASSNODE = make(LinkedHashMap.class);
protected static final ClassNode CLOSUREPARAMS_CLASSNODE = make(ClosureParams.class);
protected static final ClassNode NAMED_PARAMS_CLASSNODE = make(NamedParams.class);
protected static final ClassNode MAP_ENTRY_TYPE = make(Map.Entry.class);
protected static final ClassNode ENUMERATION_TYPE = make(Enumeration.class);
// GRECLIPSE add
private static final ClassNode SET_TYPE = ClassHelper.makeWithoutCaching(Set.class);
private static final ClassNode LinkedHashSet_TYPE = ClassHelper.makeWithoutCaching(LinkedHashSet.class);
// GRECLIPSE end
public static final Statement GENERATED_EMPTY_STATEMENT = new EmptyStatement();
public static final MethodNode CLOSURE_CALL_NO_ARG;
public static final MethodNode CLOSURE_CALL_ONE_ARG;
public static final MethodNode CLOSURE_CALL_VARGS;
static {
// Cache closure call methods
CLOSURE_CALL_NO_ARG = CLOSURE_TYPE.getDeclaredMethod("call", Parameter.EMPTY_ARRAY);
CLOSURE_CALL_ONE_ARG = CLOSURE_TYPE.getDeclaredMethod("call", new Parameter[]{
new Parameter(OBJECT_TYPE, "arg")
});
CLOSURE_CALL_VARGS = CLOSURE_TYPE.getDeclaredMethod("call", new Parameter[]{
new Parameter(OBJECT_TYPE.makeArray(), "args")
});
}
private static final String[] EMPTY_STRING_ARRAY = new String[0];
protected final ReturnAdder.ReturnStatementListener returnListener = new ReturnAdder.ReturnStatementListener() {
public void returnStatementAdded(final ReturnStatement returnStatement) {
if (isNullConstant(returnStatement.getExpression())) return;
/* GRECLIPSE edit -- GROOVY-9907
checkReturnType(returnStatement);
if (typeCheckingContext.getEnclosingClosure() != null) {
addClosureReturnType(getType(returnStatement.getExpression()));
*/
ClassNode returnType = checkReturnType(returnStatement);
if (typeCheckingContext.getEnclosingClosure() != null) {
addClosureReturnType(returnType);
// GRECLIPSE end
} else if (typeCheckingContext.getEnclosingMethod() != null) {
} else {
throw new GroovyBugError("Unexpected return statement at "
+ returnStatement.getLineNumber() + ":" + returnStatement.getColumnNumber()
+ " " + returnStatement.getText());
}
}
};
protected final ReturnAdder returnAdder = new ReturnAdder(returnListener);
protected TypeCheckingContext typeCheckingContext;
protected DefaultTypeCheckingExtension extension;
protected FieldNode currentField;
protected PropertyNode currentProperty;
public StaticTypeCheckingVisitor(SourceUnit source, ClassNode cn) {
this.typeCheckingContext = new TypeCheckingContext(this);
this.extension = createDefaultTypeCheckingExtension();
this.typeCheckingContext.source = source;
this.typeCheckingContext.pushEnclosingClassNode(cn);
this.typeCheckingContext.pushErrorCollector(source.getErrorCollector());
this.typeCheckingContext.pushTemporaryTypeInfo();
}
private DefaultTypeCheckingExtension createDefaultTypeCheckingExtension() {
DefaultTypeCheckingExtension ext = new DefaultTypeCheckingExtension(this);
ext.addHandler(new TraitTypeCheckingExtension(this));
return ext;
}
protected SourceUnit getSourceUnit() {
return typeCheckingContext.source;
}
public void initialize() {
extension.setup();
}
/**
* Returns the current type checking context. The context is used internally by the type
* checker during type checking to store various state data.
*
* @return the type checking context
*/
public TypeCheckingContext getTypeCheckingContext() {
return typeCheckingContext;
}
public void addTypeCheckingExtension(TypeCheckingExtension extension) {
this.extension.addHandler(extension);
}
public void setCompilationUnit(CompilationUnit cu) {
typeCheckingContext.setCompilationUnit(cu);
}
@Override
public void visitClass(final ClassNode node) {
if (shouldSkipClassNode(node)) return;
if (extension.beforeVisitClass(node)) {
extension.afterVisitClass(node);
return;
}
Object type = node.getNodeMetaData(StaticTypesMarker.INFERRED_TYPE);
if (type != null) {
// transformation has already been run on this class node
// so we'll use a silent collector in order not to duplicate errors
typeCheckingContext.pushErrorCollector();
}
typeCheckingContext.pushEnclosingClassNode(node);
Set<MethodNode> oldVisitedMethod = typeCheckingContext.alreadyVisitedMethods;
typeCheckingContext.alreadyVisitedMethods = new LinkedHashSet<MethodNode>();
super.visitClass(node);
Iterator<InnerClassNode> innerClasses = node.getInnerClasses();
while (innerClasses.hasNext()) {
InnerClassNode innerClassNode = innerClasses.next();
visitClass(innerClassNode);
}
typeCheckingContext.alreadyVisitedMethods = oldVisitedMethod;
// GRECLIPSE add
typeCheckingContext.popEnclosingClassNode();
if (type != null) {
typeCheckingContext.popErrorCollector();
}
// GRECLIPSE end
node.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, node);
// mark all methods as visited. We can't do this in visitMethod because the type checker
// works in a two pass sequence and we don't want to skip the second pass
for (MethodNode methodNode : node.getMethods()) {
methodNode.putNodeMetaData(StaticTypeCheckingVisitor.class, Boolean.TRUE);
}
for (ConstructorNode constructorNode : node.getDeclaredConstructors()) {
constructorNode.putNodeMetaData(StaticTypeCheckingVisitor.class, Boolean.TRUE);
}
extension.afterVisitClass(node);
}
protected boolean shouldSkipClassNode(final ClassNode node) {
// GRECLIPSE add
if (Boolean.TRUE.equals(node.getNodeMetaData(StaticTypeCheckingVisitor.class))) return true;
// GRECLIPSE end
if (isSkipMode(node)) return true;
return false;
}
/**
* Returns the list of type checking annotations class nodes. Subclasses may override this method
* in order to provide additional classes which must be looked up when checking if a method or
* a class node should be skipped.
* <p>
* The default implementation returns {@link TypeChecked}.
*
* @return array of class nodes
*/
protected ClassNode[] getTypeCheckingAnnotations() {
return TYPECHECKING_ANNOTATIONS;
}
public boolean isSkipMode(final AnnotatedNode node) {
if (node == null) return false;
for (ClassNode tca : getTypeCheckingAnnotations()) {
List<AnnotationNode> annotations = node.getAnnotations(tca);
if (annotations != null) {
for (AnnotationNode annotation : annotations) {
Expression value = annotation.getMember("value");
if (value != null) {
if (value instanceof ConstantExpression) {
ConstantExpression ce = (ConstantExpression) value;
if (TypeCheckingMode.SKIP.toString().equals(ce.getValue().toString())) return true;
} else if (value instanceof PropertyExpression) {
PropertyExpression pe = (PropertyExpression) value;
if (TypeCheckingMode.SKIP.toString().equals(pe.getPropertyAsString())) return true;
}
}
}
}
}
if (node instanceof MethodNode) {
return isSkipMode(node.getDeclaringClass());
}
if (isSkippedInnerClass(node)) return true;
return false;
}
/**
* Test if a node is an inner class node, and if it is, then checks if the enclosing method is skipped.
*
* @param node
* @return true if the inner class node should be skipped
*/
protected boolean isSkippedInnerClass(AnnotatedNode node) {
if (!(node instanceof InnerClassNode)) return false;
MethodNode enclosingMethod = ((InnerClassNode) node).getEnclosingMethod();
return enclosingMethod != null && isSkipMode(enclosingMethod);
}
@Override
public void visitClassExpression(final ClassExpression expression) {
super.visitClassExpression(expression);
ClassNode cn = (ClassNode) expression.getNodeMetaData(StaticTypesMarker.INFERRED_TYPE);
if (cn == null) {
storeType(expression, getType(expression));
}
}
private static ClassNode getOutermost(ClassNode cn) {
while (cn.getOuterClass() != null) {
cn = cn.getOuterClass();
}
return cn;
}
private static void addPrivateFieldOrMethodAccess(Expression source, ClassNode cn, StaticTypesMarker type, ASTNode accessedMember) {
/* GRECLIPSE edit
Set<ASTNode> set = (Set<ASTNode>) cn.getNodeMetaData(type);
if (set == null) {
set = new LinkedHashSet<ASTNode>();
cn.putNodeMetaData(type, set);
}
set.add(accessedMember);
*/
source.putNodeMetaData(type, accessedMember);
// GRECLIPSE add
cn.getNodeMetaData(type, x -> new LinkedHashSet<>()).add(accessedMember);
// GRECLIPSE end
}
/**
* Checks for private field access from inner or outer class.
*/
private void checkOrMarkPrivateAccess(final Expression source, final FieldNode fn, final boolean lhsOfAssignment) {
if (fn == null || !fn.isPrivate()) return;
ClassNode declaringClass = fn.getDeclaringClass();
ClassNode enclosingClass = typeCheckingContext.getEnclosingClassNode();
if (declaringClass == enclosingClass && typeCheckingContext.getEnclosingClosure() == null) return;
if (declaringClass == enclosingClass || getOutermost(declaringClass) == getOutermost(enclosingClass)) {
StaticTypesMarker accessKind = lhsOfAssignment ? StaticTypesMarker.PV_FIELDS_MUTATION : StaticTypesMarker.PV_FIELDS_ACCESS;
addPrivateFieldOrMethodAccess(source, declaringClass, accessKind, fn);
}
}
/**
* Checks for private method call from inner or outer class.
*/
private void checkOrMarkPrivateAccess(Expression source, MethodNode mn) {
if (mn == null) {
return;
}
ClassNode declaringClass = mn.getDeclaringClass();
ClassNode enclosingClassNode = typeCheckingContext.getEnclosingClassNode();
if (declaringClass != enclosingClassNode || typeCheckingContext.getEnclosingClosure() != null) {
int mods = mn.getModifiers();
boolean sameModule = declaringClass.getModule() == enclosingClassNode.getModule();
String packageName = declaringClass.getPackageName();
if (packageName == null) {
packageName = "";
}
if ((Modifier.isPrivate(mods) && sameModule)) {
addPrivateFieldOrMethodAccess(source, declaringClass, StaticTypesMarker.PV_METHODS_ACCESS, mn);
} else if (Modifier.isProtected(mods) && !packageName.equals(enclosingClassNode.getPackageName())
&& !implementsInterfaceOrIsSubclassOf(enclosingClassNode, declaringClass)) {
ClassNode cn = enclosingClassNode;
while ((cn = cn.getOuterClass()) != null) {
if (implementsInterfaceOrIsSubclassOf(cn, declaringClass)) {
addPrivateFieldOrMethodAccess(source, cn, StaticTypesMarker.PV_METHODS_ACCESS, mn);
break;
}
}
}
}
}
private void checkSuperCallFromClosure(Expression call, MethodNode directCallTarget) {
if (call instanceof MethodCallExpression && typeCheckingContext.getEnclosingClosure() != null) {
Expression objectExpression = ((MethodCallExpression) call).getObjectExpression();
if (objectExpression instanceof VariableExpression) {
VariableExpression var = (VariableExpression) objectExpression;
if (var.isSuperExpression()) {
ClassNode current = typeCheckingContext.getEnclosingClassNode();
LinkedList<MethodNode> list = current.getNodeMetaData(StaticTypesMarker.SUPER_MOP_METHOD_REQUIRED);
if (list == null) {
list = new LinkedList<MethodNode>();
current.putNodeMetaData(StaticTypesMarker.SUPER_MOP_METHOD_REQUIRED, list);
}
list.add(directCallTarget);
call.putNodeMetaData(StaticTypesMarker.SUPER_MOP_METHOD_REQUIRED, current);
}
}
}
}
/**
* wrap type in Class<> if usingClass==true
*/
private static ClassNode makeType(ClassNode cn, boolean usingClass) {
if (usingClass) {
ClassNode clazzType = CLASS_Type.getPlainNodeReference();
clazzType.setGenericsTypes(new GenericsType[]{new GenericsType(cn)});
return clazzType;
} else {
return cn;
}
}
private boolean storeTypeForThis(VariableExpression vexp) {
if (vexp == VariableExpression.THIS_EXPRESSION) return true;
if (!vexp.isThisExpression()) return false;
// GROOVY-6904, GROOVY-9422: non-static inner class constructor call sets type
storeType(vexp, !OBJECT_TYPE.equals(vexp.getType()) ? vexp.getType() : makeThis());
return true;
}
private boolean storeTypeForSuper(VariableExpression vexp) {
if (vexp == VariableExpression.SUPER_EXPRESSION) return true;
if (!vexp.isSuperExpression()) return false;
storeType(vexp, makeSuper());
return true;
}
@Override
public void visitVariableExpression(VariableExpression vexp) {
super.visitVariableExpression(vexp);
if (storeTypeForThis(vexp)) return;
if (storeTypeForSuper(vexp)) return;
final Variable accessedVariable = vexp.getAccessedVariable();
if (accessedVariable instanceof PropertyNode) {
// we must be careful, because the property node may be of a wrong type:
// if a class contains a getter and a setter of different types or
// overloaded setters, the type of the property node is arbitrary!
if (tryVariableExpressionAsProperty(vexp, vexp.getName())) {
BinaryExpression enclosingBinaryExpression = typeCheckingContext.getEnclosingBinaryExpression();
if (enclosingBinaryExpression != null) {
Expression leftExpression = enclosingBinaryExpression.getLeftExpression();
Expression rightExpression = enclosingBinaryExpression.getRightExpression();
SetterInfo setterInfo = removeSetterInfo(leftExpression);
if (setterInfo != null) {
if (!ensureValidSetter(vexp, leftExpression, rightExpression, setterInfo)) {
return;
}
}
}
}
} else if (accessedVariable instanceof FieldNode) {
FieldNode fieldNode = (FieldNode) accessedVariable;
TypeCheckingContext.EnclosingClosure enclosingClosure = typeCheckingContext.getEnclosingClosure();
if (enclosingClosure != null) {
// GROOVY-8562
// when vexp has the same name as a property of the owner,
// the IMPLICIT_RECEIVER must be set in case it's the delegate
if (tryVariableExpressionAsProperty(vexp, vexp.getName())) {
// IMPLICIT_RECEIVER is handled elsewhere
// however other access needs to be fixed for private access
if (vexp.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER) == null) {
ClassNode owner = (ClassNode) vexp.getNodeMetaData(StaticCompilationMetadataKeys.PROPERTY_OWNER);
if (owner != null) {
FieldNode veFieldNode = owner.getField(vexp.getName());
if (veFieldNode != null) {
fieldNode = veFieldNode;
boolean lhsOfEnclosingAssignment = isLHSOfEnclosingAssignment(vexp);
vexp.setAccessedVariable(fieldNode);
checkOrMarkPrivateAccess(vexp, fieldNode, lhsOfEnclosingAssignment);
}
}
}
}
} else {
checkOrMarkPrivateAccess(vexp, fieldNode, isLHSOfEnclosingAssignment(vexp));
ClassNode inferredType = getInferredTypeFromTempInfo(vexp, null);
if (inferredType != null && !inferredType.equals(OBJECT_TYPE)) {
vexp.putNodeMetaData(StaticTypesMarker.INFERRED_RETURN_TYPE, inferredType);
} else {
storeType(vexp, getType(vexp));
}
}
}
TypeCheckingContext.EnclosingClosure enclosingClosure = typeCheckingContext.getEnclosingClosure();
/* GRECLIPSE edit -- GROOVY-9604
if (enclosingClosure != null) {
switch (vexp.getName()) {
case "delegate":
DelegationMetadata md = getDelegationMetadata(enclosingClosure.getClosureExpression());
if (md != null) {
storeType(vexp, md.getType());
return;
}
// falls through
case "owner":
if (typeCheckingContext.getEnclosingClosureStack().size() > 1) {
storeType(vexp, CLOSURE_TYPE);
return;
}
// falls through
case "thisObject":
storeType(vexp, typeCheckingContext.getEnclosingClassNode());
return;
}
}
*/
if (!(accessedVariable instanceof DynamicVariable)) {
/* GRECLIPSE edit -- GROOVY-9907
if (typeCheckingContext.getEnclosingClosure() == null) {
*/
{
// GRECLIPSE end
VariableExpression variable = null;
if (accessedVariable instanceof Parameter) {
variable = new ParameterVariableExpression((Parameter) accessedVariable);
} else if (accessedVariable instanceof VariableExpression) {
variable = (VariableExpression) accessedVariable;
}
if (variable != null) {
ClassNode inferredType = getInferredTypeFromTempInfo(variable, (ClassNode) variable.getNodeMetaData(StaticTypesMarker.INFERRED_TYPE));
// instanceof applies, stash away the type, reusing key used elsewhere
if (inferredType != null && !inferredType.getName().equals("java.lang.Object")) {
vexp.putNodeMetaData(StaticTypesMarker.INFERRED_RETURN_TYPE, inferredType);
}
}
}
return;
}
// a dynamic variable is either a closure property, a class member referenced from a closure, or an undeclared variable
// GRECLIPSE add -- GROOVY-9604
if (enclosingClosure != null) {
switch (vexp.getName()) {
case "delegate":
DelegationMetadata dm = getDelegationMetadata(enclosingClosure.getClosureExpression());
if (dm != null) {
storeType(vexp, dm.getType());
return;
}
// falls through
case "owner":
if (typeCheckingContext.getEnclosingClosureStack().size() > 1) {
storeType(vexp, CLOSURE_TYPE);
return;
}
// falls through
case "thisObject":
storeType(vexp, typeCheckingContext.getEnclosingClassNode());
return;
case "parameterTypes":
storeType(vexp, CLASS_Type.makeArray());
return;
case "maximumNumberOfParameters":
case "resolveStrategy":
case "directive":
storeType(vexp, int_TYPE);
return;
}
}
// GRECLIPSE end
if (tryVariableExpressionAsProperty(vexp, vexp.getName())) return;
if (!extension.handleUnresolvedVariableExpression(vexp)) {
addStaticTypeError("The variable [" + vexp.getName() + "] is undeclared.", vexp);
}
}
private boolean tryVariableExpressionAsProperty(final VariableExpression vexp, final String dynName) {
PropertyExpression pexp = thisPropX(true, dynName);
if (visitPropertyExpressionSilent(pexp, vexp)) {
vexp.copyNodeMetaData(pexp.getObjectExpression());
for (Object key : new Object[]{StaticTypesMarker.IMPLICIT_RECEIVER, StaticTypesMarker.READONLY_PROPERTY, StaticTypesMarker.PV_FIELDS_ACCESS, StaticTypesMarker.PV_FIELDS_MUTATION, StaticTypesMarker.DECLARATION_INFERRED_TYPE, StaticTypesMarker.DIRECT_METHOD_CALL_TARGET}) {
Object val = pexp.getNodeMetaData(key);
if (val != null) vexp.putNodeMetaData(key, val);
}
vexp.removeNodeMetaData(StaticTypesMarker.INFERRED_TYPE);
ClassNode type = pexp.getNodeMetaData(StaticTypesMarker.INFERRED_TYPE);
storeType(vexp, type != null ? type: pexp.getType());
String receiver = vexp.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER);
Boolean dynamic = pexp.getNodeMetaData(StaticTypesMarker.DYNAMIC_RESOLUTION);
// GROOVY-7701, GROOVY-7996: correct false assumption made by VariableScopeVisitor
if (((receiver != null && !receiver.endsWith("owner")) || Boolean.TRUE.equals(dynamic))
&& !(vexp.getAccessedVariable() instanceof DynamicVariable)) {
vexp.setAccessedVariable(new DynamicVariable(dynName, false));
}
return true;
}
return false;
}
private boolean visitPropertyExpressionSilent(PropertyExpression pe, Expression lhsPart) {
return (existsProperty(pe, !isLHSOfEnclosingAssignment(lhsPart)));
}
@Override
public void visitPropertyExpression(final PropertyExpression pexp) {
typeCheckingContext.pushEnclosingPropertyExpression(pexp);
try {
if (visitPropertyExpressionSilent(pexp, pexp)) return;
if (!extension.handleUnresolvedProperty(pexp)) {
Expression objectExpression = pexp.getObjectExpression();
addStaticTypeError("No such property: " + pexp.getPropertyAsString() +
" for class: " + findCurrentInstanceOfClass(objectExpression, getType(objectExpression)).toString(false), pexp);
}
} finally {
typeCheckingContext.popEnclosingPropertyExpression();
}
}
private boolean isLHSOfEnclosingAssignment(final Expression expression) {
final BinaryExpression ec = typeCheckingContext.getEnclosingBinaryExpression();
return ec != null && ec.getLeftExpression() == expression && isAssignment(ec.getOperation().getType());
}
@Override
public void visitAttributeExpression(final AttributeExpression expression) {
if (!existsProperty(expression, true) && !extension.handleUnresolvedAttribute(expression)) {
Expression objectExpression = expression.getObjectExpression();
addStaticTypeError("No such attribute: " + expression.getPropertyAsString() +
" for class: " + findCurrentInstanceOfClass(objectExpression, getType(objectExpression)).toString(false), expression);
}
}
@Override
public void visitRangeExpression(final RangeExpression expression) {
super.visitRangeExpression(expression);
ClassNode fromType = getWrapper(getType(expression.getFrom()));
ClassNode toType = getWrapper(getType(expression.getTo()));
if (Integer_TYPE.equals(fromType) && Integer_TYPE.equals(toType)) {
storeType(expression, ClassHelper.make(IntRange.class));
} else {
ClassNode rangeType = ClassHelper.make(Range.class).getPlainNodeReference();
rangeType.setGenericsTypes(new GenericsType[]{new GenericsType(WideningCategories.lowestUpperBound(fromType, toType))});
storeType(expression, rangeType);
}
}
// GRECLIPSE add -- GROOVY-9455: !(x instanceof T) shouldn't propagate T as inferred type
@Override
public void visitNotExpression(final NotExpression expression) {
typeCheckingContext.pushTemporaryTypeInfo();
super.visitNotExpression(expression);
typeCheckingContext.popTemporaryTypeInfo();
}
// GRECLIPSE end
@Override
public void visitBinaryExpression(final BinaryExpression expression) {
int op = expression.getOperation().getType();
if (op == COMPARE_IDENTICAL) {
return; // we'll report those as errors later
}
// GRELCIPSE add -- GROOVY-7971
if (op == LOGICAL_OR) {
typeCheckingContext.pushTemporaryTypeInfo();
}
// GRECLIPSE end
BinaryExpression enclosingBinaryExpression = typeCheckingContext.getEnclosingBinaryExpression();
typeCheckingContext.pushEnclosingBinaryExpression(expression);
try {
final Expression leftExpression = expression.getLeftExpression();
final Expression rightExpression = expression.getRightExpression();
leftExpression.visit(this); ClassNode lType;
SetterInfo setterInfo = removeSetterInfo(leftExpression);
if (setterInfo != null) {
if (ensureValidSetter(expression, leftExpression, rightExpression, setterInfo)) {
// GRECLIPSE add
if (op == LOGICAL_OR) typeCheckingContext.popTemporaryTypeInfo();
// GRECLIPSE end
return;
}
lType = getType(leftExpression);
} else {
// GRECLIPSE add -- GROOVY-9977, GROOVY-9995
lType = getType(leftExpression);
if (op == ASSIGN) {
if (isFunctionalInterface(lType)) {
processFunctionalInterfaceAssignment(lType, rightExpression);
} else if (isClosureWithType(lType) && rightExpression instanceof ClosureExpression) {
storeInferredReturnType(rightExpression, getCombinedBoundType(lType.getGenericsTypes()[0]));
}
}
// GRECLIPSE end
rightExpression.visit(this);
}
/* GRECLIPSE edit -- GROOVY-9953
ClassNode lType = getType(leftExpression);
ClassNode rType = getType(rightExpression);
if (isNullConstant(rightExpression)) {
if (!isPrimitiveType(lType))
rType = UNKNOWN_PARAMETER_TYPE; // primitive types should be ignored as they will result in another failure
}
*/
ClassNode rType = isNullConstant(rightExpression) && !isPrimitiveType(lType)
? UNKNOWN_PARAMETER_TYPE
: getInferredTypeFromTempInfo(rightExpression, getType(rightExpression));
// GRECLIPSE end
BinaryExpression reversedBinaryExpression = binX(rightExpression, expression.getOperation(), leftExpression);
ClassNode resultType = op == KEYWORD_IN
? getResultType(rType, op, lType, reversedBinaryExpression)
: getResultType(lType, op, rType, expression);
if (op == KEYWORD_IN) {
// in case of the "in" operator, the receiver and the arguments are reversed
// so we use the reversedExpression and get the target method from it
storeTargetMethod(expression, (MethodNode) reversedBinaryExpression.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET));
} else if (op == LEFT_SQUARE_BRACKET
&& leftExpression instanceof VariableExpression
&& leftExpression.getNodeMetaData(StaticTypesMarker.INFERRED_TYPE) == null) {
storeType(leftExpression, lType);
}
// GRECLIPSE add
else if (op == LOGICAL_OR) {
typeCheckingContext.popTemporaryTypeInfo();
}
// GRECLIPSE end
if (resultType == null) {
resultType = lType;
}
// if left expression is a closure shared variable, a second pass should be done
if (leftExpression instanceof VariableExpression) {
VariableExpression leftVar = (VariableExpression) leftExpression;
if (leftVar.isClosureSharedVariable()) {
// if left expression is a closure shared variable, we should check it twice
// see GROOVY-5874
typeCheckingContext.secondPassExpressions.add(new SecondPassExpression<Void>(expression));
}
}
/* GRECLIPSE edit -- GROOVY-9033
if (lType.isUsingGenerics() && missesGenericsTypes(resultType) && isAssignment(op)) {
// unchecked assignment
// examples:
// List<A> list = []
// List<A> list = new LinkedList()
// Iterable<A> list = new LinkedList()
// in that case, the inferred type of the binary expression is the type of the RHS
// "completed" with generics type information available in the LHS
ClassNode completedType = GenericsUtils.parameterizeType(lType, resultType.getPlainNodeReference());
resultType = completedType;
}
*/
if (isAssignment(op)) {
if (lType.isUsingGenerics() && missesGenericsTypes(resultType)) {
resultType = GenericsUtils.parameterizeType(lType, resultType.getPlainNodeReference());
} else if (lType.equals(OBJECT_TYPE) && GenericsUtils.hasUnresolvedGenerics(resultType)) { // def list = []
Map<GenericsTypeName, GenericsType> placeholders = extractGenericsParameterMapOfThis(typeCheckingContext);
resultType = fullyResolveType(resultType, Optional.ofNullable(placeholders).orElseGet(Collections::emptyMap));
}
} else
// GRECLIPSE end
if (isArrayOp(op)
&& !lType.isArray()
&& enclosingBinaryExpression != null
&& enclosingBinaryExpression.getLeftExpression() == expression
&& isAssignment(enclosingBinaryExpression.getOperation().getType())) {
// left hand side of an assignment : map['foo'] = ...
Expression enclosingBE_rightExpr = enclosingBinaryExpression.getRightExpression();
if (!(enclosingBE_rightExpr instanceof ClosureExpression)) {
enclosingBE_rightExpr.visit(this);
}
ClassNode[] arguments = {rType, getType(enclosingBE_rightExpr)};
List<MethodNode> nodes = findMethod(lType.redirect(), "putAt", arguments);
if (nodes.size() == 1) {
typeCheckMethodsWithGenericsOrFail(lType, arguments, nodes.get(0), enclosingBE_rightExpr);
} else if (nodes.isEmpty()) {
addNoMatchingMethodError(lType, "putAt", arguments, enclosingBinaryExpression);
}
}
boolean isEmptyDeclaration = expression instanceof DeclarationExpression && rightExpression instanceof EmptyExpression;
if (!isEmptyDeclaration && isAssignment(op)) {
if (rightExpression instanceof ConstructorCallExpression) {
inferDiamondType((ConstructorCallExpression) rightExpression, lType);
}
ClassNode originType = getOriginalDeclarationType(leftExpression);
typeCheckAssignment(expression, leftExpression, originType, rightExpression, resultType);
// if assignment succeeds but result type is not a subtype of original type, then we are in a special cast handling
// and we must update the result type
if (!implementsInterfaceOrIsSubclassOf(getWrapper(resultType), getWrapper(originType))) {
resultType = originType;
} else if (lType.isUsingGenerics() && !lType.isEnum() && hasRHSIncompleteGenericTypeInfo(resultType)) {
// for example, LHS is List<ConcreteClass> and RHS is List<T> where T is a placeholder
resultType = lType;
} else {
// GROOVY-7549: RHS type may not be accessible to enclosing class
int modifiers = resultType.getModifiers();
ClassNode enclosingType = typeCheckingContext.getEnclosingClassNode();