public void visitAssignmentExpression(GrAssignmentExpression expression) {
GrExpression rValue = expression.getRValue();
GrExpression lValue = expression.getLValue();
if (myExpression.equals(rValue)) {
PsiType lType = lValue.getNominalType();
if (lType != null) {
myResult = new TypeConstraint[] {SubtypeConstraint.create(lType)};
} else if (lValue instanceof GrReferenceExpression) {
GroovyResolveResult result = ((GrReferenceExpression) lValue).advancedResolve();
PsiElement resolved = result.getElement();
if (resolved instanceof GrVariable) {
PsiType type = ((GrVariable) resolved).getTypeGroovy();
if (type != null) {
myResult =
new TypeConstraint[] {
SubtypeConstraint.create(result.getSubstitutor().substitute(type))
};
}
}
}
} else if (myExpression.equals(lValue)) {
if (rValue != null) {
PsiType rType = rValue.getType();
if (rType != null) {
myResult = new TypeConstraint[] {SupertypeConstraint.create(rType)};
}
}
}
}
@Nullable
private static GrAssignmentExpression genRefForSetter(GrMethodCall call, String accessorName) {
String name = GroovyPropertyUtils.getPropertyNameBySetterName(accessorName);
if (name == null) return null;
GrExpression value = call.getExpressionArguments()[0];
GrReferenceExpression refExpr = (GrReferenceExpression) call.getInvokedExpression();
final GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(call.getProject());
final GrAssignmentExpression assignment =
(GrAssignmentExpression) factory.createStatementFromText("yyy = xxx", call);
GrReferenceExpression lvalueRef = (GrReferenceExpression) assignment.getLValue();
lvalueRef.setQualifier(refExpr.getQualifier());
lvalueRef.handleElementRenameSimple(name);
assignment.getRValue().replaceWithExpression(value, true);
return assignment;
}
public void visitAssignmentExpression(GrAssignmentExpression expression) {
GrExpression lValue = expression.getLValue();
if (expression.getOperationTokenType() != mASSIGN) {
if (lValue instanceof GrReferenceExpression
&& myPolicy.isReferenceAccepted((GrReferenceExpression) lValue)) {
String referenceName = ((GrReferenceExpression) lValue).getReferenceName();
if (referenceName != null) {
addNodeAndCheckPending(new ReadWriteVariableInstruction(referenceName, lValue, READ));
}
}
}
GrExpression rValue = expression.getRValue();
if (rValue != null) {
rValue.accept(this);
lValue.accept(this);
}
}
private static boolean isSetterInvocation(GrMethodCall call) {
GrExpression expr = call.getInvokedExpression();
if (!(expr instanceof GrReferenceExpression)) return false;
GrReferenceExpression refExpr = (GrReferenceExpression) expr;
PsiMethod method;
if (call instanceof GrApplicationStatement) {
PsiElement element = refExpr.resolve();
if (!(element instanceof PsiMethod)
|| !GroovyPropertyUtils.isSimplePropertySetter(((PsiMethod) element))) return false;
method = (PsiMethod) element;
} else {
method = call.resolveMethod();
if (!GroovyPropertyUtils.isSimplePropertySetter(method)) return false;
LOG.assertTrue(method != null);
}
if (!GroovyNamesUtil.isValidReference(
GroovyPropertyUtils.getPropertyNameBySetterName(method.getName()),
((GrReferenceExpression) expr).getQualifier() != null,
call.getProject())) {
return false;
}
GrArgumentList args = call.getArgumentList();
if (args == null
|| args.getExpressionArguments().length != 1
|| PsiImplUtil.hasNamedArguments(args)) {
return false;
}
GrAssignmentExpression assignment = genRefForSetter(call, refExpr.getReferenceName());
if (assignment != null) {
GrExpression value = assignment.getLValue();
if (value instanceof GrReferenceExpression
&& call.getManager()
.areElementsEquivalent(((GrReferenceExpression) value).resolve(), method)) {
return true;
}
}
return false;
}
private static boolean assignmentExpressionsAreEquivalent(
@NotNull GrAssignmentExpression assignExp1, @NotNull GrAssignmentExpression assignExp2) {
final IElementType sign1 = assignExp1.getOperationToken();
final IElementType sign2 = assignExp2.getOperationToken();
if (!sign1.equals(sign2)) {
return false;
}
final GrExpression lhs1 = assignExp1.getLValue();
final GrExpression lhs2 = assignExp2.getLValue();
final GrExpression rhs1 = assignExp1.getRValue();
final GrExpression rhs2 = assignExp2.getRValue();
return expressionsAreEquivalent(lhs1, lhs2) && expressionsAreEquivalent(rhs1, rhs2);
}
@Nullable
private PsiType getNominalTypeInner(PsiElement resolved) {
if (resolved == null && !"class".equals(getReferenceName())) {
resolved = resolve();
}
if (resolved instanceof PsiClass) {
final PsiElementFactory factory = JavaPsiFacade.getInstance(getProject()).getElementFactory();
if (PsiUtil.isInstanceThisRef(this)) {
final PsiClassType categoryType = GdkMethodUtil.getCategoryType((PsiClass) resolved);
if (categoryType != null) {
return categoryType;
} else {
return factory.createType((PsiClass) resolved);
}
}
if (getParent() instanceof GrReferenceExpression || PsiUtil.isSuperReference(this)) {
return factory.createType((PsiClass) resolved);
} else {
return TypesUtil.createJavaLangClassType(
factory.createType((PsiClass) resolved), getProject(), getResolveScope());
}
}
if (resolved instanceof GrVariable) {
return ((GrVariable) resolved).getDeclaredType();
}
if (resolved instanceof PsiVariable) {
return ((PsiVariable) resolved).getType();
}
if (resolved instanceof PsiMethod) {
PsiMethod method = (PsiMethod) resolved;
if (PropertyUtil.isSimplePropertySetter(method)
&& !method.getName().equals(getReferenceName())) {
return method.getParameterList().getParameters()[0].getType();
}
// 'class' property with explicit generic
PsiClass containingClass = method.getContainingClass();
if (containingClass != null
&& CommonClassNames.JAVA_LANG_OBJECT.equals(containingClass.getQualifiedName())
&& "getClass".equals(method.getName())) {
return TypesUtil.createJavaLangClassType(
GrReferenceResolveUtil.getQualifierType(this), getProject(), getResolveScope());
}
return PsiUtil.getSmartReturnType(method);
}
if (resolved instanceof GrReferenceExpression) {
PsiElement parent = resolved.getParent();
if (parent instanceof GrAssignmentExpression) {
GrAssignmentExpression assignment = (GrAssignmentExpression) parent;
if (resolved.equals(assignment.getLValue())) {
GrExpression rValue = assignment.getRValue();
if (rValue != null) {
PsiType rType = rValue.getType();
if (rType != null) {
return rType;
}
}
}
}
}
if (resolved == null) {
final PsiType fromClassRef = getTypeFromClassRef(this);
if (fromClassRef != null) {
return fromClassRef;
}
final PsiType fromMapAccess = getTypeFromMapAccess(this);
if (fromMapAccess != null) {
return fromMapAccess;
}
final PsiType fromSpreadOperator = getTypeFromSpreadOperator(this);
if (fromSpreadOperator != null) {
return fromSpreadOperator;
}
}
return null;
}