/**
* Adds type and description representation from function docstring
*
* @param parameter parameter of a function
* @return true if type from docstring was added
*/
private boolean addTypeAndDescriptionFromDocstring(@NotNull final PyNamedParameter parameter) {
final PyFunction function = PsiTreeUtil.getParentOfType(parameter, PyFunction.class);
if (function != null) {
final String docString = PyPsiUtils.strValue(function.getDocStringExpression());
final Pair<String, String> typeAndDescr = getTypeAndDescription(docString, parameter);
final String type = typeAndDescr.first;
final String description = typeAndDescr.second;
if (type != null) {
final PyType pyType = PyTypeParser.getTypeByName(parameter, type);
if (pyType instanceof PyClassType) {
myBody
.addItem(": ")
.addWith(
new LinkWrapper(PythonDocumentationProvider.LINK_TYPE_PARAM),
$(pyType.getName()));
} else {
myBody.addItem(": ").addItem(type);
}
}
if (description != null) {
myEpilog.addItem(BR).addItem(description);
}
return type != null;
}
return false;
}
public PyFunctionStub createStub(@NotNull final PyFunction psi, final StubElement parentStub) {
PyFunctionImpl function = (PyFunctionImpl) psi;
String message = function.extractDeprecationMessage();
final PyStringLiteralExpression docStringExpression = function.getDocStringExpression();
return new PyFunctionStubImpl(
psi.getName(),
PyPsiUtils.strValue(docStringExpression),
message == null ? null : StringRef.fromString(message),
parentStub,
getStubElementType());
}
@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);
}
}
/** @param anchor should never be null or null will be returned */
@NotNull
public static ParseResult parse(@Nullable final PsiElement anchor, @NotNull String type) {
PyPsiUtils.assertValid(anchor);
if (anchor == null) {
return EMPTY_RESULT;
}
final ForwardDeclaration<ParseResult, PyElementType> typeExpr = ForwardDeclaration.create();
final FunctionalParser<ParseResult, PyElementType> classType =
token(IDENTIFIER)
.then(many(op(".").skipThen(token(IDENTIFIER))))
.map(new MakeSimpleType(anchor))
.cached()
.named("class-type");
final FunctionalParser<ParseResult, PyElementType> tupleType =
op("(")
.skipThen(typeExpr)
.then(many(op(",").skipThen(typeExpr)))
.thenSkip(op(")"))
.map(
value -> {
ParseResult result = value.getFirst();
final List<ParseResult> rest = value.getSecond();
if (rest.isEmpty()) {
return result;
}
final List<PyType> types = new ArrayList<>();
types.add(result.getType());
for (ParseResult r : rest) {
result = result.merge(r);
types.add(r.getType());
}
return result.withType(PyTupleType.create(anchor, types));
})
.named("tuple-type");
final FunctionalParser<ParseResult, PyElementType> typeParameter =
token(PARAMETER)
.then(maybe(op("<=").skipThen(typeExpr)))
.map(
value -> {
final Token<PyElementType> token = value.getFirst();
final String name = token.getText().toString();
final TextRange range = token.getRange();
final ParseResult boundResult = value.getSecond();
if (boundResult != null) {
final PyGenericType type1 = new PyGenericType(name, boundResult.getType());
final ParseResult result = new ParseResult(null, type1, range);
return result.merge(boundResult).withType(type1);
}
return new ParseResult(null, new PyGenericType(name, null), range);
})
.named("type-parameter");
final FunctionalParser<ParseResult, PyElementType> simpleExpr =
classType.or(tupleType).or(typeParameter).named("simple-expr");
final FunctionalParser<ParseResult, PyElementType> paramExpr =
classType
.thenSkip(op("["))
.then(typeExpr)
.then(many(op(",").skipThen(typeExpr)))
.thenSkip(op("]"))
.map(
value -> {
final Pair<ParseResult, ParseResult> firstPair = value.getFirst();
final ParseResult first = firstPair.getFirst();
final ParseResult second = firstPair.getSecond();
final List<ParseResult> third = value.getSecond();
final PyType firstType = first.getType();
final List<PyType> typesInBrackets = new ArrayList<>();
typesInBrackets.add(second.getType());
ParseResult result = first;
result = result.merge(second);
for (ParseResult r : third) {
typesInBrackets.add(r.getType());
result = result.merge(r);
}
final List<PyType> elementTypes =
third.isEmpty()
? Collections.singletonList(second.getType())
: typesInBrackets;
final PsiElement resolved = first.getElement();
if (resolved != null) {
final PyType typingType = PyTypingTypeProvider.getType(resolved, elementTypes);
if (typingType != null) {
return result.withType(typingType);
}
}
if (firstType instanceof PyClassType) {
final PyType type1 =
new PyCollectionTypeImpl(
((PyClassType) firstType).getPyClass(), false, elementTypes);
return result.withType(type1);
}
return EMPTY_RESULT;
})
.or(
classType
.thenSkip(op("of"))
.then(simpleExpr)
.map(
value -> {
final ParseResult firstResult = value.getFirst();
final ParseResult secondResult = value.getSecond();
final ParseResult result = firstResult.merge(secondResult);
final PyType firstType = firstResult.getType();
final PyType secondType = secondResult.getType();
if (firstType != null) {
if (firstType instanceof PyClassType && secondType != null) {
return result.withType(
new PyCollectionTypeImpl(
((PyClassType) firstType).getPyClass(),
false,
Collections.singletonList(secondType)));
}
return result.withType(firstType);
}
return EMPTY_RESULT;
}))
.or(
classType
.thenSkip(op("from"))
.then(simpleExpr)
.thenSkip(op("to"))
.then(simpleExpr)
.map(
value -> {
final Pair<ParseResult, ParseResult> firstPair = value.getFirst();
final ParseResult first = firstPair.getFirst();
final ParseResult second = firstPair.getSecond();
final ParseResult third = value.getSecond();
final PyType firstType = first.getType();
if (firstType instanceof PyClassType) {
final List<PyType> elementTypes =
Arrays.asList(second.getType(), third.getType());
final PyCollectionTypeImpl type1 =
new PyCollectionTypeImpl(
((PyClassType) firstType).getPyClass(), false, elementTypes);
return first.merge(second).merge(third).withType(type1);
}
return EMPTY_RESULT;
}))
.named("param-expr");
final FunctionalParser<ParseResult, PyElementType> callableExpr =
op("(")
.skipThen(maybe(typeExpr.then(many(op(",").skipThen(typeExpr)))))
.thenSkip(op(")"))
.thenSkip(op("->"))
.then(typeExpr)
.map(
value -> {
final List<PyCallableParameter> parameters = new ArrayList<>();
final ParseResult returnResult = value.getSecond();
ParseResult result;
final Pair<ParseResult, List<ParseResult>> firstPair = value.getFirst();
if (firstPair != null) {
final ParseResult first = firstPair.getFirst();
final List<ParseResult> second = firstPair.getSecond();
result = first;
parameters.add(new PyCallableParameterImpl(null, first.getType()));
for (ParseResult r : second) {
result = result.merge(r);
parameters.add(new PyCallableParameterImpl(null, r.getType()));
}
result = result.merge(returnResult);
} else {
result = returnResult;
}
return result.withType(
new PyCallableTypeImpl(parameters, returnResult.getType()));
})
.named("callable-expr");
final FunctionalParser<ParseResult, PyElementType> singleExpr =
paramExpr.or(callableExpr).or(simpleExpr).named("single-expr");
final FunctionalParser<ParseResult, PyElementType> unionExpr =
singleExpr
.then(many(op("or").or(op("|")).skipThen(singleExpr)))
.map(
value -> {
final ParseResult first = value.getFirst();
final List<ParseResult> rest = value.getSecond();
if (rest.isEmpty()) {
return first;
}
final List<PyType> types = new ArrayList<>();
types.add(first.getType());
ParseResult result = first;
for (ParseResult r : rest) {
types.add(r.getType());
result = result.merge(r);
}
return result.withType(PyUnionType.union(types));
})
.named("union-expr");
typeExpr.define(unionExpr).named("type-expr");
final FunctionalParser<ParseResult, PyElementType> typeFile =
typeExpr.endOfInput().named("type-file");
try {
return typeFile.parse(tokenize(type));
} catch (ParserException e) {
return EMPTY_RESULT;
}
}
