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Sema: Subscript default arguments

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Fixes <https://bugs.swift.org/browse/SR-6118>.
This commit is contained in:
Slava Pestov
2019-04-02 01:37:56 -04:00
parent 043d76a3bf
commit 6bb36b5c01
19 changed files with 308 additions and 44 deletions
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5
lib/Parse/ParseDecl.cpp
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@@ -6364,10 +6364,11 @@ Parser::parseDeclSubscript(ParseDeclOptions Flags,
return makeParserCodeCompletionStatus();
// Parse the parameter list.
DefaultArgumentInfo DefaultArgs;
SmallVector<Identifier, 4> argumentNames;
ParserResult<ParameterList> Indices
= parseSingleParameterClause(ParameterContextKind::Subscript,
&argumentNames);
&argumentNames, &DefaultArgs);
Status |= Indices;
SignatureHasCodeCompletion |= Indices.hasCodeCompletion();
@@ -6419,6 +6420,8 @@ Parser::parseDeclSubscript(ParseDeclOptions Flags,
nullptr);
Subscript->getAttrs() = Attributes;
DefaultArgs.setFunctionContext(Subscript, Subscript->getIndices());
// Parse a 'where' clause if present, adding it to our GenericParamList.
if (Tok.is(tok::kw_where)) {
ContextChange CC(*this, Subscript);