@Nullable
private PyType resolveQualifierType(
@NotNull List<Token<PyElementType>> tokens,
@NotNull PyFile file,
@NotNull TypeEvalContext context,
@NotNull Map<TextRange, PyType> types,
@NotNull Map<PyType, TextRange> fullRanges,
@NotNull Map<PyType, PyImportElement> imports) {
if (tokens.isEmpty()) {
return null;
}
final Token<PyElementType> firstToken = tokens.get(0);
final String firstText = firstToken.getText().toString();
final TextRange firstRange = firstToken.getRange();
final List<RatedResolveResult> resolveResults = file.multiResolveName(firstText);
if (resolveResults.isEmpty()) {
return getImplicitlyResolvedType(tokens, context, types, fullRanges, firstRange);
}
final List<PyType> members = Lists.newArrayList();
for (RatedResolveResult result : resolveResults) {
final PsiElement resolved = result.getElement();
PyType type = null;
if (resolved instanceof PyTargetExpression) {
type =
PyTypingTypeProvider.getTypeFromTargetExpression(
(PyTargetExpression) resolved, context);
}
if (type == null && resolved instanceof PyTypedElement) {
type = context.getType((PyTypedElement) resolved);
}
if (type != null) {
if (!allowResolveToType(type)) {
continue;
}
if (type instanceof PyClassLikeType) {
type = ((PyClassLikeType) type).toInstance();
}
types.put(firstRange, type);
fullRanges.put(type, firstRange);
for (PyFromImportStatement fromImportStatement : file.getFromImports()) {
for (PyImportElement importElement : fromImportStatement.getImportElements()) {
if (firstText.equals(importElement.getVisibleName())) {
imports.put(type, importElement);
}
}
}
for (PyImportElement importElement : file.getImportTargets()) {
if (firstText.equals(importElement.getVisibleName())) {
imports.put(type, importElement);
}
}
}
members.add(type);
}
if (!members.isEmpty()) {
tokens.remove(0);
}
return PyUnionType.union(members);
}
private void addToExistingImport(PyImportElement src) {
final PyElementGenerator gen = PyElementGenerator.getInstance(myTarget.getProject());
// did user choose 'import' or 'from import'?
PsiElement parent = src.getParent();
if (parent instanceof PyFromImportStatement) {
// add another import element right after the one we got
PsiElement newImportElement = gen.createImportElement(LanguageLevel.getDefault(), myName);
parent.add(newImportElement);
} else { // just 'import'
// all we need is to qualify our target
myTarget.replace(
gen.createExpressionFromText(
LanguageLevel.forElement(myTarget), src.getVisibleName() + "." + myName));
}
}
@NotNull
public static List<RatedResolveResult> resolveNameInImportStatement(
PyImportElement importElement, @NotNull QualifiedName qName) {
final PsiFile file = importElement.getContainingFile().getOriginalFile();
boolean absoluteImportEnabled = isAbsoluteImportEnabledFor(importElement);
final List<PsiElement> modules = resolveModule(qName, file, absoluteImportEnabled, 0);
return rateResults(modules);
}
/**
* Helper method that builds an import path, handling all these "import foo", "import foo as bar",
* "from bar import foo", etc. Either importPath or importSource must be not null.
*
* @param name what is ultimately imported.
* @param importPath known path to import the name.
* @param source known ImportElement to import the name; its 'as' clause is used if present.
* @return a properly qualified name.
*/
@NotNull
public static String getQualifiedName(
@NotNull String name, @Nullable QualifiedName importPath, @Nullable PyImportElement source) {
final StringBuilder sb = new StringBuilder();
if (source != null) {
final PsiElement parent = source.getParent();
if (parent instanceof PyFromImportStatement) {
sb.append(name);
} else {
sb.append(source.getVisibleName()).append(".").append(name);
}
} else {
if (importPath != null && importPath.getComponentCount() > 0) {
sb.append(importPath).append(".");
}
sb.append(name);
}
return sb.toString();
}
public Object[] getCompletionVariants(
String completionPrefix, PsiElement location, ProcessingContext context) {
List<LookupElement> result = new ArrayList<LookupElement>();
ScopeOwner scopeOwner = ScopeUtil.getScopeOwner(location);
assert scopeOwner != null;
final List<PyImportElement> importTargets = PyModuleType.getVisibleImports(scopeOwner);
final int imported = myImportedModule.getImportedPrefix().getComponentCount();
for (PyImportElement importTarget : importTargets) {
final QualifiedName qName = importTarget.getImportedQName();
if (qName != null && qName.matchesPrefix(myImportedModule.getImportedPrefix())) {
final List<String> components = qName.getComponents();
if (components.size() > imported) {
String module = components.get(imported);
result.add(LookupElementBuilder.create(module));
}
}
}
return result.toArray(new Object[result.size()]);
}
@NotNull
public static List<RatedResolveResult> multiResolveImportElement(
PyImportElement importElement, @NotNull final QualifiedName qName) {
if (ApplicationManager.getApplication().isUnitTestMode()) {
PyPsiUtils.assertValid(importElement);
}
final PyStatement importStatement = importElement.getContainingImportStatement();
if (importStatement instanceof PyFromImportStatement) {
return resolveNameInFromImport((PyFromImportStatement) importStatement, qName);
} else {
return resolveNameInImportStatement(importElement, qName);
}
}
@NotNull
public String getPresentableText(@NotNull String myName) {
final StringBuilder sb = new StringBuilder(getQualifiedName(myName, myPath, myImportElement));
PsiElement parent = null;
if (myImportElement != null) {
parent = myImportElement.getParent();
}
if (myImportable instanceof PyFunction) {
sb.append(((PyFunction) myImportable).getParameterList().getPresentableText(false));
} else if (myImportable instanceof PyClass) {
final List<String> supers =
ContainerUtil.mapNotNull(
((PyClass) myImportable).getSuperClasses(),
new Function<PyClass, String>() {
@Override
public String fun(PyClass cls) {
return PyUtil.isObjectClass(cls) ? null : cls.getName();
}
});
if (!supers.isEmpty()) {
sb.append("(");
StringUtil.join(supers, ", ", sb);
sb.append(")");
}
}
if (parent instanceof PyFromImportStatement) {
sb.append(" from ");
final PyFromImportStatement fromImportStatement = (PyFromImportStatement) parent;
sb.append(StringUtil.repeat(".", fromImportStatement.getRelativeLevel()));
final PyReferenceExpression source = fromImportStatement.getImportSource();
if (source != null) {
sb.append(source.getReferencedName());
}
}
return sb.toString();
}