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;
}
private static Pair<String, String> getTypeAndDescription(
@Nullable final String docString, @NotNull final PyNamedParameter followed) {
StructuredDocString structuredDocString = DocStringUtil.parse(docString);
String type = null;
String desc = null;
if (structuredDocString != null) {
final String name = followed.getName();
type = structuredDocString.getParamType(name);
desc = structuredDocString.getParamDescription(name);
}
return Pair.create(type, desc);
}
private static void highlightMissingArguments(
PyArgumentList node, ProblemsHolder holder, CallArgumentsMapping result) {
ASTNode our_node = node.getNode();
if (our_node != null) {
ASTNode close_paren = our_node.findChildByType(PyTokenTypes.RPAR);
if (close_paren != null) {
for (PyNamedParameter param : result.getUnmappedParams()) {
holder.registerProblem(
close_paren.getPsi(),
PyBundle.message("INSP.parameter.$0.unfilled", param.getName()));
}
}
}
}
@Override
public void visitPyDecoratorList(final PyDecoratorList node) {
PyDecorator[] decorators = node.getDecorators();
for (PyDecorator deco : decorators) {
if (deco.hasArgumentList()) continue;
final PyCallExpression.PyMarkedCallee markedCallee =
deco.resolveCallee(resolveWithoutImplicits());
if (markedCallee != null && !markedCallee.isImplicitlyResolved()) {
final Callable callable = markedCallee.getCallable();
int firstParamOffset = markedCallee.getImplicitOffset();
final List<PyParameter> params = PyUtil.getParameters(callable, myTypeEvalContext);
final PyNamedParameter allegedFirstParam =
params.size() < firstParamOffset
? null
: params.get(firstParamOffset - 1).getAsNamed();
if (allegedFirstParam == null || allegedFirstParam.isKeywordContainer()) {
// no parameters left to pass function implicitly, or wrong param type
registerProblem(
deco,
PyBundle.message(
"INSP.func.$0.lacks.first.arg",
callable.getName())); // TODO: better names for anon lambdas
} else { // possible unfilled params
for (int i = firstParamOffset; i < params.size(); i += 1) {
final PyParameter parameter = params.get(i);
if (parameter instanceof PySingleStarParameter) continue;
final PyNamedParameter par = parameter.getAsNamed();
// param tuples, non-starred or non-default won't do
if (par == null
|| (!par.isKeywordContainer()
&& !par.isPositionalContainer()
&& !par.hasDefaultValue())) {
String parameterName = par != null ? par.getName() : "(...)";
registerProblem(
deco, PyBundle.message("INSP.parameter.$0.unfilled", parameterName));
}
}
}
}
// else: this case is handled by arglist visitor
}
}