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[IDE][Utils] Elevate a decl name viewer utility from swift-api-digester.

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This utility parses a given StringRef to a base name and several argument
names and provides a convenient view on them.
This commit is contained in:
Xi Ge
2016-12-01 16:27:42 -08:00
parent 7a58f00b6d
commit 3b68ca2936
3 changed files with 45 additions and 48 deletions
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48
tools/swift-api-digester/swift-api-digester.cpp
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@@ -3120,52 +3120,6 @@ struct OverloadedFuncInfo {
}
};
/// This provides a utility to view a printed name by parsing the components
/// of that name. The components include a base name and an array of argument
/// labels.
class DeclNameViewer {
StringRef BaseName;
SmallVector<StringRef, 4> Labels;
public:
DeclNameViewer(StringRef Text) {
auto ArgStart = Text.find_first_of('(');
if (ArgStart == StringRef::npos) {
BaseName = Text;
return;
}
BaseName = Text.substr(0, ArgStart);
auto ArgEnd = Text.find_last_of(')');
assert(ArgEnd != StringRef::npos);
StringRef AllArgs = Text.substr(ArgStart + 1, ArgEnd - ArgStart - 1);
AllArgs.split(Labels, ":");
if (Labels.empty())
return;
assert(Labels.back().empty());
Labels.pop_back();
}
StringRef base() const { return BaseName; }
llvm::ArrayRef<StringRef> args() const { return llvm::makeArrayRef(Labels); }
unsigned partsCount() const { return 1 + Labels.size(); }
unsigned commonParts(DeclNameViewer &Other) const {
if (base() != Other.base())
return 0;
unsigned Result = 1;
unsigned Len = std::min(args().size(), Other.args().size());
for (unsigned I = 0; I < Len; ++ I) {
if (args()[I] == Other.args()[I])
Result ++;
else
return Result;
}
return Result;
}
};
class OverloadMemberFunctionEmitter : public SDKNodeVisitor {
std::vector<OverloadedFuncInfo> &AllItems;
@@ -3187,7 +3141,7 @@ class OverloadMemberFunctionEmitter : public SDKNodeVisitor {
DeclNameViewer ChildViewer(C->getPrintedName());
if (ChildViewer.args().empty())
continue;
if (CurrentViewer.commonParts(ChildViewer) >=
if (CurrentViewer.commonPartsCount(ChildViewer) >=
CurrentViewer.partsCount() - 1) {
AllItems.emplace_back(Node->getAs<SDKNodeDecl>()->getUsr());
return;