maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Fix dead store and simplify. No functionality change (although the code is now 

correct if MaxEditDistance were increased to something greater than 1).

llvm-svn: 203153
This commit is contained in:
Richard Smith 2014-03-06 20:00:05 +00:00
parent c68b0f7797
commit 2d70976fc0
1 changed files with 31 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
clang/lib/AST/CommentCommandTraits.cpp
View File

@ -43,47 +43,42 @@ const CommandInfo *CommandTraits::getCommandInfo(unsigned CommandID) const {
return getRegisteredCommandInfo(CommandID);
}
static void
HelperTypoCorrectCommandInfo(SmallVectorImpl<const CommandInfo *> &BestCommand,
StringRef Typo, const CommandInfo *Command) {
const unsigned MaxEditDistance = 1;
unsigned BestEditDistance = MaxEditDistance + 1;
StringRef Name = Command->Name;
unsigned MinPossibleEditDistance = abs((int)Name.size() - (int)Typo.size());
if (MinPossibleEditDistance > 0 &&
Typo.size() / MinPossibleEditDistance < 1)
return;
unsigned EditDistance = Typo.edit_distance(Name, true, MaxEditDistance);
if (EditDistance > MaxEditDistance)
return;
if (EditDistance == BestEditDistance)
BestCommand.push_back(Command);
else if (EditDistance < BestEditDistance) {
BestCommand.clear();
BestCommand.push_back(Command);
BestEditDistance = EditDistance;
}
}
const CommandInfo *
CommandTraits::getTypoCorrectCommandInfo(StringRef Typo) const {
// single character command impostures, such as \t or \n must not go
// Single-character command impostures, such as \t or \n, should not go
// through the fixit logic.
if (Typo.size() <= 1)
return NULL;
return nullptr;
// The maximum edit distance we're prepared to accept.
const unsigned MaxEditDistance = 1;
unsigned BestEditDistance = MaxEditDistance;
SmallVector<const CommandInfo *, 2> BestCommand;
const int NumOfCommands = llvm::array_lengthof(Commands);
for (int i = 0; i < NumOfCommands; i++)
HelperTypoCorrectCommandInfo(BestCommand, Typo, &Commands[i]);
for (unsigned i = 0, e = RegisteredCommands.size(); i != e; ++i)
if (!RegisteredCommands[i]->IsUnknownCommand)
HelperTypoCorrectCommandInfo(BestCommand, Typo, RegisteredCommands[i]);
return (BestCommand.size() != 1) ? NULL : BestCommand[0];
auto ConsiderCorrection = [&](const CommandInfo *Command) {
StringRef Name = Command->Name;
unsigned MinPossibleEditDistance = abs((int)Name.size() - (int)Typo.size());
if (MinPossibleEditDistance <= BestEditDistance) {
unsigned EditDistance = Typo.edit_distance(Name, true, BestEditDistance);
if (EditDistance < BestEditDistance) {
BestEditDistance = EditDistance;
BestCommand.clear();
}
if (EditDistance == BestEditDistance)
BestCommand.push_back(Command);
}
};
for (const auto &Command : Commands)
ConsiderCorrection(&Command);
for (const auto *Command : RegisteredCommands)
if (!Command->IsUnknownCommand)
ConsiderCorrection(Command);
return BestCommand.size() == 1 ? BestCommand[0] : nullptr;
}
CommandInfo *CommandTraits::createCommandInfoWithName(StringRef CommandName) {