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[serialization] Add support for infix operators.

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Swift SVN r6081
This commit is contained in:
Jordan Rose
2013-07-09 00:02:15 +00:00
parent 2b0e969647
commit bec3b0a216
3 changed files with 92 additions and 2 deletions
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45
lib/Serialization/ModuleFile.cpp
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@@ -422,6 +422,24 @@ DeclContext *ModuleFile::getDeclContext(DeclID DID) {
}
/// Translate from the Serialization assocativity enum values to the AST
/// strongly-typed enum.
///
/// The former is guaranteed to be stable, but may not reflect this version of
/// the AST.
static Optional<swift::Associativity> getActualAssociativity(uint8_t assoc) {
switch (assoc) {
case serialization::Associativity::LeftAssociative:
return swift::Associativity::Left;
case serialization::Associativity::RightAssociative:
return swift::Associativity::Right;
case serialization::Associativity::NonAssociative:
return swift::Associativity::None;
default:
return Nothing;
}
}
Decl *ModuleFile::getDecl(DeclID DID, Optional<DeclContext *> ForcedContext) {
if (DID == 0)
return nullptr;
@@ -805,6 +823,33 @@ Decl *ModuleFile::getDecl(DeclID DID, Optional<DeclContext *> ForcedContext) {
break;
}
case decls_block::INFIX_OPERATOR_DECL: {
IdentifierID nameID;
DeclID contextID;
uint8_t rawAssociativity;
unsigned precedence;
decls_block::InfixOperatorLayout::readRecord(scratch, nameID, contextID,
rawAssociativity, precedence);
auto associativity = getActualAssociativity(rawAssociativity);
if (!associativity.hasValue()) {
error();
return nullptr;
}
InfixData infixData(precedence, associativity.getValue());
declOrOffset = new (ctx) InfixOperatorDecl(getDeclContext(contextID),
SourceLoc(), SourceLoc(),
getIdentifier(nameID),
SourceLoc(), SourceLoc(),
SourceLoc(), SourceLoc(),
SourceLoc(), SourceLoc(),
SourceLoc(), infixData);
break;
}
case decls_block::XREF: {
uint8_t kind;
TypeID expectedTypeID;