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StringToOffsetTable: Allow uniquing the first element, add an option to skip appending a terminating null.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151983 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-03-03 19:13:20 +00:00
parent e19ead0f24
commit 02ee75393f
1 changed files with 7 additions and 6 deletions
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11
utils/TableGen/StringToOffsetTable.h
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@ -26,16 +26,17 @@ class StringToOffsetTable {
std::string AggregateString; std::string AggregateString;
public: public:
unsigned GetOrAddStringOffset(StringRef Str) { unsigned GetOrAddStringOffset(StringRef Str, bool appendZero = true) {
unsigned &Entry = StringOffset[Str]; StringMapEntry<unsigned> &Entry = StringOffset.GetOrCreateValue(Str, -1U);
if (Entry == 0) { if (Entry.getValue() == -1U) {
// Add the string to the aggregate if this is the first time found. // Add the string to the aggregate if this is the first time found.
Entry = AggregateString.size(); Entry.setValue(AggregateString.size());
AggregateString.append(Str.begin(), Str.end()); AggregateString.append(Str.begin(), Str.end());
if (appendZero)
AggregateString += '\0'; AggregateString += '\0';
} }
return Entry; return Entry.getValue();
} }
void EmitString(raw_ostream &O) { void EmitString(raw_ostream &O) {