@Override
public void visitPyAssignmentStatement(PyAssignmentStatement node) {
final PyExpression value = node.getAssignedValue();
if (value instanceof PyCallExpression) {
final PyType type = myTypeEvalContext.getType(value);
final PyExpression callee = ((PyCallExpression) value).getCallee();
if (type instanceof PyNoneType && callee != null) {
final PyTypeChecker.AnalyzeCallResults analyzeCallResults =
PyTypeChecker.analyzeCall(((PyCallExpression) value), myTypeEvalContext);
if (analyzeCallResults != null) {
final PyCallable callable = analyzeCallResults.getCallable();
if (PySdkUtil.isElementInSkeletons(callable)) {
return;
}
if (callable instanceof PyFunction) {
final PyFunction function = (PyFunction) callable;
// Currently we don't infer types returned by decorators
if (hasInheritors(function) || PyUtil.hasCustomDecorators(function)) {
return;
}
}
registerProblem(
node,
PyBundle.message("INSP.none.function.assignment", callee.getName()),
new PyRemoveAssignmentQuickFix());
}
}
}
}
@NotNull
private static PyExpression invertExpression(@NotNull final PsiElement expression) {
final PyElementGenerator elementGenerator =
PyElementGenerator.getInstance(expression.getProject());
if (expression instanceof PyBoolLiteralExpression) {
final String value =
((PyBoolLiteralExpression) expression).getValue() ? PyNames.FALSE : PyNames.TRUE;
return elementGenerator.createExpressionFromText(LanguageLevel.forElement(expression), value);
}
if (expression instanceof PyReferenceExpression
&& (PyNames.FALSE.equals(expression.getText())
|| PyNames.TRUE.equals(expression.getText()))) {
final String value = PyNames.TRUE.equals(expression.getText()) ? PyNames.FALSE : PyNames.TRUE;
return elementGenerator.createExpressionFromText(LanguageLevel.forElement(expression), value);
} else if (expression instanceof PyPrefixExpression) {
if (((PyPrefixExpression) expression).getOperator() == PyTokenTypes.NOT_KEYWORD) {
final PyExpression operand = ((PyPrefixExpression) expression).getOperand();
if (operand != null)
return elementGenerator.createExpressionFromText(
LanguageLevel.forElement(expression), operand.getText());
}
}
return elementGenerator.createExpressionFromText(
LanguageLevel.forElement(expression), "not " + expression.getText());
}
private PsiElement performReplace(
@NotNull final PsiElement declaration, final IntroduceOperation operation) {
final PyExpression expression = operation.getInitializer();
final Project project = operation.getProject();
return new WriteCommandAction<PsiElement>(project, expression.getContainingFile()) {
protected void run(final Result<PsiElement> result) throws Throwable {
result.setResult(addDeclaration(operation, declaration));
PyExpression newExpression = createExpression(project, operation.getName(), declaration);
if (operation.isReplaceAll()) {
List<PsiElement> newOccurrences = new ArrayList<PsiElement>();
for (PsiElement occurrence : operation.getOccurrences()) {
final PsiElement replaced = replaceExpression(occurrence, newExpression, operation);
if (replaced != null) {
newOccurrences.add(replaced);
}
}
operation.setOccurrences(newOccurrences);
} else {
final PsiElement replaced = replaceExpression(expression, newExpression, operation);
operation.setOccurrences(Collections.singletonList(replaced));
}
postRefactoring(operation.getElement());
}
}.execute().getResultObject();
}
@NotNull
@Override
public PsiPolyVariantReference getReference(PyResolveContext context) {
final PsiFile file = getContainingFile();
final PyExpression qualifier = getQualifier();
// Handle import reference
final PsiElement importParent =
PsiTreeUtil.getParentOfType(this, PyImportElement.class, PyFromImportStatement.class);
if (importParent != null) {
return PyImportReference.forElement(this, importParent, context);
}
// Return special reference
final ConsoleCommunication communication =
file.getCopyableUserData(PydevConsoleRunner.CONSOLE_KEY);
if (communication != null) {
if (qualifier != null) {
return new PydevConsoleReference(this, communication, qualifier.getText() + ".");
}
return new PydevConsoleReference(this, communication, "");
}
if (qualifier != null) {
return new PyQualifiedReference(this, context);
}
return new PyReferenceImpl(this, context);
}
protected Collection<String> generateSuggestedNames(PyExpression expression) {
Collection<String> candidates =
new LinkedHashSet<String>() {
@Override
public boolean add(String s) {
if (PyNames.isReserved(s)) {
return false;
}
return super.add(s);
}
};
String text = expression.getText();
final Pair<PsiElement, TextRange> selection =
expression.getUserData(PyReplaceExpressionUtil.SELECTION_BREAKS_AST_NODE);
if (selection != null) {
text = selection.getSecond().substring(text);
}
if (expression instanceof PyCallExpression) {
final PyExpression callee = ((PyCallExpression) expression).getCallee();
if (callee != null) {
text = callee.getText();
}
}
if (text != null) {
candidates.addAll(NameSuggesterUtil.generateNames(text));
}
final TypeEvalContext context = TypeEvalContext.userInitiated(expression.getContainingFile());
PyType type = context.getType(expression);
if (type != null && type != PyNoneType.INSTANCE) {
String typeName = type.getName();
if (typeName != null) {
if (type.isBuiltin()) {
typeName = typeName.substring(0, 1);
}
candidates.addAll(NameSuggesterUtil.generateNamesByType(typeName));
}
}
final PyKeywordArgument kwArg =
PsiTreeUtil.getParentOfType(expression, PyKeywordArgument.class);
if (kwArg != null && kwArg.getValueExpression() == expression) {
candidates.add(kwArg.getKeyword());
}
final PyArgumentList argList = PsiTreeUtil.getParentOfType(expression, PyArgumentList.class);
if (argList != null) {
final CallArgumentsMapping result = argList.analyzeCall(PyResolveContext.noImplicits());
if (result.getMarkedCallee() != null) {
final PyNamedParameter namedParameter = result.getPlainMappedParams().get(expression);
if (namedParameter != null) {
candidates.add(namedParameter.getName());
}
}
}
return candidates;
}
@Nullable
private static PsiElement resolveDecorator(@NotNull PyDecorator decorator) {
final PyExpression callee = decorator.getCallee();
if (callee == null) {
return null;
}
final PsiReference reference = callee.getReference();
if (reference == null) {
return null;
}
return reference.resolve();
}
public PyAssignmentStatement createDeclaration(IntroduceOperation operation) {
final Project project = operation.getProject();
final PyExpression initializer = operation.getInitializer();
InitializerTextBuilder builder = new InitializerTextBuilder();
initializer.accept(builder);
String assignmentText = operation.getName() + " = " + builder.result();
PsiElement anchor =
operation.isReplaceAll()
? findAnchor(operation.getOccurrences())
: PsiTreeUtil.getParentOfType(initializer, PyStatement.class);
return createDeclaration(project, assignmentText, anchor);
}
/**
* Looks for two standard decorators to a function, or a wrapping assignment that closely follows
* it.
*
* @return a flag describing what was detected.
*/
@Nullable
public Modifier getModifier() {
String deconame = getClassOrStaticMethodDecorator();
if (PyNames.CLASSMETHOD.equals(deconame)) {
return CLASSMETHOD;
} else if (PyNames.STATICMETHOD.equals(deconame)) {
return STATICMETHOD;
}
// implicit staticmethod __new__
PyClass cls = getContainingClass();
if (cls != null && PyNames.NEW.equals(getName()) && cls.isNewStyleClass()) {
return STATICMETHOD;
}
//
if (getStub() != null) {
return getWrappersFromStub();
}
String func_name = getName();
if (func_name != null) {
PyAssignmentStatement assignment =
PsiTreeUtil.getNextSiblingOfType(this, PyAssignmentStatement.class);
if (assignment != null) {
for (Pair<PyExpression, PyExpression> pair : assignment.getTargetsToValuesMapping()) {
PyExpression value = pair.getSecond();
if (value instanceof PyCallExpression) {
PyExpression target = pair.getFirst();
if (target instanceof PyTargetExpression && func_name.equals(target.getName())) {
Pair<String, PyFunction> interpreted =
interpretAsModifierWrappingCall((PyCallExpression) value, this);
if (interpreted != null) {
PyFunction original = interpreted.getSecond();
if (original == this) {
String wrapper_name = interpreted.getFirst();
if (PyNames.CLASSMETHOD.equals(wrapper_name)) {
return CLASSMETHOD;
} else if (PyNames.STATICMETHOD.equals(wrapper_name)) {
return STATICMETHOD;
}
}
}
}
}
}
}
}
return null;
}
@Override
public void visitPyCallExpression(final PyCallExpression node) {
// TODO: refactor, messy code
final PyExpression callee = node.getCallee();
if (callee != null) {
final PsiReference calleeRef = callee.getReference();
if (calleeRef != null) {
final PsiElement calleeDeclaration = calleeRef.resolve();
if (calleeDeclaration instanceof PyFunction) {
final PyFunction calleeFunction = (PyFunction) calleeDeclaration;
final PyClass clazz = calleeFunction.getContainingClass();
if (clazz != null) {
if (PyUtil.isInit(calleeFunction)) {
return; // Init call should not be marked as dependency
}
myResult.putValue(clazz, calleeFunction);
}
}
}
}
}
/** @param self should be this */
@NotNull
private static List<PyAssignmentStatement> findAttributesStatic(@NotNull final PsiElement self) {
final List<PyAssignmentStatement> result = new ArrayList<>();
for (final PyAssignmentStatement statement :
new PsiQuery(self).siblings(PyAssignmentStatement.class).getElements()) {
for (final PyQualifiedExpression targetExpression :
new PsiQuery(statement.getTargets()).filter(PyQualifiedExpression.class).getElements()) {
final PyExpression qualifier = targetExpression.getQualifier();
if (qualifier == null) {
continue;
}
final PsiReference qualifierReference = qualifier.getReference();
if (qualifierReference == null) {
continue;
}
if (qualifierReference.isReferenceTo(self)) {
result.add(statement);
}
}
}
return result;
}
private static boolean isAbstract(@NotNull PyClass pyClass) {
final PyType metaClass =
pyClass.getMetaClassType(
TypeEvalContext.userInitiated(pyClass.getProject(), pyClass.getContainingFile()));
if (metaClass instanceof PyClassLikeType
&& PyNames.ABC_META_CLASS.equals(metaClass.getName())) {
return true;
}
if (metaClass == null) {
final PyExpression metaClassExpr =
as(pyClass.getMetaClassExpression(), PyReferenceExpression.class);
if (metaClassExpr != null && PyNames.ABC_META_CLASS.equals(metaClassExpr.getName())) {
return true;
}
}
for (PyFunction method : pyClass.getMethods(false)) {
if (PyUtil.isDecoratedAsAbstract(method)) {
return true;
}
}
return false;
}
@Override
public boolean isAvailableOnElement(@NotNull PsiElement element) {
final VirtualFile virtualFile = PsiUtilCore.getVirtualFile(element);
if (virtualFile != null
&& ProjectRootManager.getInstance(element.getProject())
.getFileIndex()
.isInLibraryClasses(virtualFile)) return false;
if (element instanceof PyTargetExpression) {
final PyAssignmentStatement assignmentStatement =
PsiTreeUtil.getParentOfType(element, PyAssignmentStatement.class);
if (assignmentStatement != null) {
final PyExpression assignedValue = assignmentStatement.getAssignedValue();
if (assignedValue == null) return false;
final String name = assignedValue.getText();
return name != null && (PyNames.TRUE.equals(name) || PyNames.FALSE.equals(name));
}
}
if (element instanceof PyNamedParameter) {
final PyExpression defaultValue = ((PyNamedParameter) element).getDefaultValue();
if (defaultValue instanceof PyBoolLiteralExpression) return true;
}
return element.getParent() instanceof PyBoolLiteralExpression;
}
private static boolean isInBuiltins(PyExpression callee) {
if (callee instanceof PyQualifiedExpression
&& (((PyQualifiedExpression) callee).getQualifier() != null)) {
return false;
}
PsiReference reference = callee.getReference();
if (reference != null) {
PsiElement resolved = reference.resolve();
if (resolved != null && PyBuiltinCache.getInstance(callee).hasInBuiltins(resolved)) {
return true;
}
}
return false;
}
@Nullable
@Override
public List<? extends RatedResolveResult> resolveMember(
@NotNull String name,
@Nullable PyExpression location,
@NotNull AccessDirection direction,
@NotNull PyResolveContext resolveContext) {
final PsiElement resolved = myImportedModule.resolve();
if (resolved != null) {
final PsiFile containingFile = location != null ? location.getContainingFile() : null;
List<PsiElement> elements =
Collections.singletonList(
ResolveImportUtil.resolveChild(resolved, name, containingFile, false, true));
final PyImportElement importElement = myImportedModule.getImportElement();
final PyFile resolvedFile = PyUtil.as(resolved, PyFile.class);
if (location != null
&& importElement != null
&& PyUtil.inSameFile(location, importElement)
&& ResolveImportUtil.getPointInImport(location) == PointInImport.NONE
&& resolved instanceof PsiFileSystemItem
&& (resolvedFile == null
|| !PyUtil.isPackage(resolvedFile)
|| resolvedFile.getElementNamed(name) == null)) {
final List<PsiElement> importedSubmodules =
PyModuleType.collectImportedSubmodules((PsiFileSystemItem) resolved, location);
if (importedSubmodules != null) {
final Set<PsiElement> imported = Sets.newHashSet(importedSubmodules);
elements =
ContainerUtil.filter(
elements,
new Condition<PsiElement>() {
@Override
public boolean value(PsiElement element) {
return imported.contains(element);
}
});
}
}
return ResolveImportUtil.rateResults(elements);
}
return null;
}
