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Eliminate default argument expressions from the type system.

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Elements of a tuple type now know if there is a default argument, and
what kind of default argument it is (callee side, __FILE__, __LINE__,
__COLUMN__), but they don't have an actual expression. There are a
number of cleanups this enables that will follow. 

Note that the serialization support is as-yet-untested.


Swift SVN r6351
This commit is contained in:
Doug Gregor
2013-07-18 18:49:32 +00:00
parent 457f27ccac
commit ad1a9ac2c3
13 changed files with 133 additions and 73 deletions
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10
lib/Serialization/ModuleFile.cpp
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@@ -1480,14 +1480,18 @@ Type ModuleFile::getType(TypeID TID) {
IdentifierID nameID;
TypeID typeID;
uint8_t rawDefArg;
bool isVararg;
decls_block::TupleTypeEltLayout::readRecord(scratch, nameID, typeID,
isVararg);
rawDefArg, isVararg);
{
BCOffsetRAII restoreOffset(DeclTypeCursor);
elements.push_back({getType(typeID), getIdentifier(nameID),
/*initializer=*/nullptr, isVararg});
DefaultArgumentKind defArg = DefaultArgumentKind::None;
if (auto actualDefArg = getActualDefaultArgKind(rawDefArg))
defArg = *actualDefArg;
elements.push_back({getType(typeID), getIdentifier(nameID), defArg,
isVararg});
}
}