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Simplify code. No intended functionality change.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84790 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2009-10-21 22:55:51 +00:00
parent f7ce17e8a8
commit f8ea2e28bb
1 changed files with 6 additions and 12 deletions
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18
lib/VMCore/Metadata.cpp
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@ -259,23 +259,17 @@ unsigned MetadataContext::registerMDKind(const StringRef Name) {
/// isValidName - Return true if Name is a valid custom metadata handler name.
bool MetadataContext::isValidName(const StringRef MDName) {
const char *Name = MDName.data();
if (!Name)
if (MDName.empty())
return false;
if (!isalpha(*Name))
if (!isalpha(MDName[1]))
return false;
unsigned Length = strlen(Name);
unsigned Count = 1;
++Name;
while (Name &&
(isalnum(*Name) || *Name == '_' || *Name == '-' || *Name == '.')) {
++Name;
++Count;
for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
++I) {
if (!isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
return false;
}
if (Length != Count)
return false;
return true;
}