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[Selector splitting] Drop non-directional prepositions from the beginning of imported argument names.

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Swift SVN r15865
This commit is contained in:
Doug Gregor
2014-04-03 14:22:20 +00:00
parent 6f232af3bb
commit 08e7797f86
2 changed files with 37 additions and 18 deletions
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43
lib/ClangImporter/ClangImporter.cpp
View File

@@ -583,13 +583,28 @@ splitFirstSelectorPiece(StringRef selector, SmallVectorImpl<char> &scratch) {
return { selector, "" };
}
/// Import the given string directly as an identifier, where the empty
/// string maps to a null identifier.
static Identifier importNameOrNull(ASTContext &ctx, StringRef name) {
/// Import an argument name.
static Identifier importArgName(ASTContext &ctx, StringRef name) {
// Simple case: empty name.
if (name.empty())
return Identifier();
return ctx.getIdentifier(name);
// If the first word isn't a non-directional preposition, lowercase
// it to form the argument name.
llvm::SmallString<16> scratch;
auto firstWord = camel_case::getFirstWord(name);
if (!ctx.LangOpts.SplitPrepositions ||
getPrepositionKind(firstWord) != PK_Nondirectional)
return ctx.getIdentifier(camel_case::toLowercaseWord(name, scratch));
// The first word is a non-directional preposition.
// If there's only one word, we're left with no argument name.
if (firstWord.size() == name.size())
return Identifier();
return ctx.getIdentifier(
camel_case::toLowercaseWord(name.substr(firstWord.size()), scratch));
}
DeclName
@@ -603,17 +618,14 @@ ClangImporter::Implementation::importName(clang::Selector selector,
// Simple case.
if (!isInitializer || name.size() == 4)
return importNameOrNull(SwiftContext, name);
return SwiftContext.getIdentifier(name);
// This is an initializer with no parameters but a name that
// contains more than 'init', so synthesize an argument to capture
// what follows 'init'.
assert(camel_case::getFirstWord(name).equals("init"));
llvm::SmallString<16> scratch;
auto baseName = SwiftContext.Id_init;
auto argName
= importNameOrNull(SwiftContext,
camel_case::toLowercaseWord(name.substr(4), scratch));
auto argName = importArgName(SwiftContext, name.substr(4));
return DeclName(SwiftContext, baseName, argName);
}
@@ -622,19 +634,16 @@ ClangImporter::Implementation::importName(clang::Selector selector,
SmallVector<Identifier, 2> argumentNames;
StringRef firstPiece = selector.getNameForSlot(0);
if (isInitializer) {
llvm::SmallString<16> scratch;
assert(camel_case::getFirstWord(firstPiece).equals("init"));
baseName = SwiftContext.Id_init;
auto firstArgName = camel_case::toLowercaseWord(firstPiece.substr(4),
scratch);
argumentNames.push_back(importNameOrNull(SwiftContext, firstArgName));
argumentNames.push_back(importArgName(SwiftContext, firstPiece.substr(4)));
} else if (SplitPrepositions) {
llvm::SmallString<16> scratch;
StringRef funcName, firstArgName;
std::tie(funcName, firstArgName) = splitFirstSelectorPiece(firstPiece,
scratch);
baseName = importNameOrNull(SwiftContext, funcName);
argumentNames.push_back(importNameOrNull(SwiftContext, firstArgName));
baseName = SwiftContext.getIdentifier(funcName);
argumentNames.push_back(importArgName(SwiftContext, firstArgName));
} else {
baseName = SwiftContext.getIdentifier(firstPiece);
argumentNames.push_back(Identifier());
@@ -642,8 +651,8 @@ ClangImporter::Implementation::importName(clang::Selector selector,
// Determine the remaining argument names.
for (unsigned i = 1, e = selector.getNumArgs(); i < e; ++i) {
argumentNames.push_back(importNameOrNull(SwiftContext,
selector.getNameForSlot(i)));
argumentNames.push_back(importArgName(SwiftContext,
selector.getNameForSlot(i)));
}
return DeclName(SwiftContext, baseName, argumentNames);

12
lib/Sema/TypeCheckDecl.cpp
View File

@@ -4155,9 +4155,19 @@ createSubobjectInitOverride(TypeChecker &tc,
// Set the type of the initializer.
configureConstructorType(ctor, outerGenericParams, selfType,
argParamPatterns->getType());
if (superclassCtor->isObjC())
if (superclassCtor->isObjC()) {
ctor->setIsObjC(true);
// Inherit the @objc name from the superclass initializer, if it
// has one.
// FIXME: Generalize inheritance of attributes here?
if (auto objcAttr = superclassCtor->getAttrs().getAttribute<ObjCAttr>()) {
if (objcAttr->hasName())
ctor->getMutableAttrs().add(objcAttr->clone(ctx));
}
}
// Wire up the overides.
DeclChecker(tc, false, false).checkOverrides(ctor);