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Add support for removing an option from a genericparser

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2998 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-07-23 17:15:09 +00:00
parent ae1257a77b
commit af7e82184d
2 changed files with 32 additions and 2 deletions
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17
include/Support/CommandLine.h
View File

@ -372,6 +372,11 @@ struct generic_parser_base {
return ValueDisallowed; return ValueDisallowed;
} }
// findOption - Return the option number corresponding to the specified
// argument string. If the option is not found, getNumOptions() is returned.
//
unsigned findOption(const char *Name);
protected: protected:
bool hasArgStr; bool hasArgStr;
}; };
@ -384,8 +389,10 @@ protected:
// //
template <class DataType> template <class DataType>
class parser : public generic_parser_base { class parser : public generic_parser_base {
protected:
std::vector<std::pair<const char *, std::vector<std::pair<const char *,
std::pair<DataType, const char *> > > Values; std::pair<DataType, const char *> > > Values;
public:
// Implement virtual functions needed by generic_parser_base // Implement virtual functions needed by generic_parser_base
unsigned getNumOptions() const { return Values.size(); } unsigned getNumOptions() const { return Values.size(); }
@ -394,7 +401,6 @@ class parser : public generic_parser_base {
return Values[N].second.second; return Values[N].second.second;
} }
public:
// Default implementation, requires user to populate it with values somehow. // Default implementation, requires user to populate it with values somehow.
template<class Opt> // parse - Return true on error. template<class Opt> // parse - Return true on error.
bool parse(Opt &O, const char *ArgName, const string &Arg) { bool parse(Opt &O, const char *ArgName, const string &Arg) {
@ -416,8 +422,17 @@ public:
// addLiteralOption - Add an entry to the mapping table... // addLiteralOption - Add an entry to the mapping table...
template <class DT> template <class DT>
void addLiteralOption(const char *Name, const DT &V, const char *HelpStr) { void addLiteralOption(const char *Name, const DT &V, const char *HelpStr) {
assert(findOption(Name) == Values.size() && "Option already exists!");
Values.push_back(std::make_pair(Name, std::make_pair((DataType)V,HelpStr))); Values.push_back(std::make_pair(Name, std::make_pair((DataType)V,HelpStr)));
} }
// removeLiteralOption - Remove the specified option.
//
void removeLiteralOption(const char *Name) {
unsigned N = findOption(Name);
assert(N != Values.size() && "Option not found!");
Values.erase(Values.begin()+N);
}
}; };

17
include/llvm/Support/CommandLine.h
View File

@ -372,6 +372,11 @@ struct generic_parser_base {
return ValueDisallowed; return ValueDisallowed;
} }
// findOption - Return the option number corresponding to the specified
// argument string. If the option is not found, getNumOptions() is returned.
//
unsigned findOption(const char *Name);
protected: protected:
bool hasArgStr; bool hasArgStr;
}; };
@ -384,8 +389,10 @@ protected:
// //
template <class DataType> template <class DataType>
class parser : public generic_parser_base { class parser : public generic_parser_base {
protected:
std::vector<std::pair<const char *, std::vector<std::pair<const char *,
std::pair<DataType, const char *> > > Values; std::pair<DataType, const char *> > > Values;
public:
// Implement virtual functions needed by generic_parser_base // Implement virtual functions needed by generic_parser_base
unsigned getNumOptions() const { return Values.size(); } unsigned getNumOptions() const { return Values.size(); }
@ -394,7 +401,6 @@ class parser : public generic_parser_base {
return Values[N].second.second; return Values[N].second.second;
} }
public:
// Default implementation, requires user to populate it with values somehow. // Default implementation, requires user to populate it with values somehow.
template<class Opt> // parse - Return true on error. template<class Opt> // parse - Return true on error.
bool parse(Opt &O, const char *ArgName, const string &Arg) { bool parse(Opt &O, const char *ArgName, const string &Arg) {
@ -416,8 +422,17 @@ public:
// addLiteralOption - Add an entry to the mapping table... // addLiteralOption - Add an entry to the mapping table...
template <class DT> template <class DT>
void addLiteralOption(const char *Name, const DT &V, const char *HelpStr) { void addLiteralOption(const char *Name, const DT &V, const char *HelpStr) {
assert(findOption(Name) == Values.size() && "Option already exists!");
Values.push_back(std::make_pair(Name, std::make_pair((DataType)V,HelpStr))); Values.push_back(std::make_pair(Name, std::make_pair((DataType)V,HelpStr)));
} }
// removeLiteralOption - Remove the specified option.
//
void removeLiteralOption(const char *Name) {
unsigned N = findOption(Name);
assert(N != Values.size() && "Option not found!");
Values.erase(Values.begin()+N);
}
}; };