summaryrefslogtreecommitdiffstats
path: root/contrib/llvm/lib/Option/OptTable.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/lib/Option/OptTable.cpp')
-rw-r--r--contrib/llvm/lib/Option/OptTable.cpp111
1 files changed, 74 insertions, 37 deletions
diff --git a/contrib/llvm/lib/Option/OptTable.cpp b/contrib/llvm/lib/Option/OptTable.cpp
index 5c8a0ea..6fa459a 100644
--- a/contrib/llvm/lib/Option/OptTable.cpp
+++ b/contrib/llvm/lib/Option/OptTable.cpp
@@ -14,26 +14,27 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
+#include <cctype>
#include <map>
using namespace llvm;
using namespace llvm::opt;
-// Ordering on Info. The ordering is *almost* lexicographic, with two
-// exceptions. First, '\0' comes at the end of the alphabet instead of
-// the beginning (thus options precede any other options which prefix
-// them). Second, for options with the same name, the less permissive
-// version should come first; a Flag option should precede a Joined
-// option, for example.
+namespace llvm {
+namespace opt {
-static int StrCmpOptionName(const char *A, const char *B) {
- char a = *A, b = *B;
+// Ordering on Info. The ordering is *almost* case-insensitive lexicographic,
+// with an exceptions. '\0' comes at the end of the alphabet instead of the
+// beginning (thus options precede any other options which prefix them).
+static int StrCmpOptionNameIgnoreCase(const char *A, const char *B) {
+ const char *X = A, *Y = B;
+ char a = tolower(*A), b = tolower(*B);
while (a == b) {
if (a == '\0')
return 0;
- a = *++A;
- b = *++B;
+ a = tolower(*++X);
+ b = tolower(*++Y);
}
if (a == '\0') // A is a prefix of B.
@@ -45,21 +46,25 @@ static int StrCmpOptionName(const char *A, const char *B) {
return (a < b) ? -1 : 1;
}
-namespace llvm {
-namespace opt {
+#ifndef NDEBUG
+static int StrCmpOptionName(const char *A, const char *B) {
+ if (int N = StrCmpOptionNameIgnoreCase(A, B))
+ return N;
+ return strcmp(A, B);
+}
static inline bool operator<(const OptTable::Info &A, const OptTable::Info &B) {
if (&A == &B)
return false;
if (int N = StrCmpOptionName(A.Name, B.Name))
- return N == -1;
+ return N < 0;
for (const char * const *APre = A.Prefixes,
* const *BPre = B.Prefixes;
*APre != 0 && *BPre != 0; ++APre, ++BPre) {
if (int N = StrCmpOptionName(*APre, *BPre))
- return N == -1;
+ return N < 0;
}
// Names are the same, check that classes are in order; exactly one
@@ -68,22 +73,22 @@ static inline bool operator<(const OptTable::Info &A, const OptTable::Info &B) {
"Unexpected classes for options with same name.");
return B.Kind == Option::JoinedClass;
}
+#endif
// Support lower_bound between info and an option name.
static inline bool operator<(const OptTable::Info &I, const char *Name) {
- return StrCmpOptionName(I.Name, Name) == -1;
-}
-static inline bool operator<(const char *Name, const OptTable::Info &I) {
- return StrCmpOptionName(Name, I.Name) == -1;
+ return StrCmpOptionNameIgnoreCase(I.Name, Name) < 0;
}
}
}
OptSpecifier::OptSpecifier(const Option *Opt) : ID(Opt->getID()) {}
-OptTable::OptTable(const Info *_OptionInfos, unsigned _NumOptionInfos)
+OptTable::OptTable(const Info *_OptionInfos, unsigned _NumOptionInfos,
+ bool _IgnoreCase)
: OptionInfos(_OptionInfos),
NumOptionInfos(_NumOptionInfos),
+ IgnoreCase(_IgnoreCase),
TheInputOptionID(0),
TheUnknownOptionID(0),
FirstSearchableIndex(0)
@@ -160,10 +165,6 @@ const Option OptTable::getOption(OptSpecifier Opt) const {
return Option(&getInfo(id), this);
}
-bool OptTable::isOptionHelpHidden(OptSpecifier id) const {
- return getInfo(id).Flags & HelpHidden;
-}
-
static bool isInput(const llvm::StringSet<> &Prefixes, StringRef Arg) {
if (Arg == "-")
return true;
@@ -175,16 +176,25 @@ static bool isInput(const llvm::StringSet<> &Prefixes, StringRef Arg) {
}
/// \returns Matched size. 0 means no match.
-static unsigned matchOption(const OptTable::Info *I, StringRef Str) {
+static unsigned matchOption(const OptTable::Info *I, StringRef Str,
+ bool IgnoreCase) {
for (const char * const *Pre = I->Prefixes; *Pre != 0; ++Pre) {
StringRef Prefix(*Pre);
- if (Str.startswith(Prefix) && Str.substr(Prefix.size()).startswith(I->Name))
- return Prefix.size() + StringRef(I->Name).size();
+ if (Str.startswith(Prefix)) {
+ StringRef Rest = Str.substr(Prefix.size());
+ bool Matched = IgnoreCase
+ ? Rest.startswith_lower(I->Name)
+ : Rest.startswith(I->Name);
+ if (Matched)
+ return Prefix.size() + StringRef(I->Name).size();
+ }
}
return 0;
}
-Arg *OptTable::ParseOneArg(const ArgList &Args, unsigned &Index) const {
+Arg *OptTable::ParseOneArg(const ArgList &Args, unsigned &Index,
+ unsigned FlagsToInclude,
+ unsigned FlagsToExclude) const {
unsigned Prev = Index;
const char *Str = Args.getArgString(Index);
@@ -212,13 +222,20 @@ Arg *OptTable::ParseOneArg(const ArgList &Args, unsigned &Index) const {
unsigned ArgSize = 0;
// Scan for first option which is a proper prefix.
for (; Start != End; ++Start)
- if ((ArgSize = matchOption(Start, Str)))
+ if ((ArgSize = matchOption(Start, Str, IgnoreCase)))
break;
if (Start == End)
break;
+ Option Opt(Start, this);
+
+ if (FlagsToInclude && !Opt.hasFlag(FlagsToInclude))
+ continue;
+ if (Opt.hasFlag(FlagsToExclude))
+ continue;
+
// See if this option matches.
- if (Arg *A = Option(Start, this).accept(Args, Index, ArgSize))
+ if (Arg *A = Opt.accept(Args, Index, ArgSize))
return A;
// Otherwise, see if this argument was missing values.
@@ -226,13 +243,20 @@ Arg *OptTable::ParseOneArg(const ArgList &Args, unsigned &Index) const {
return 0;
}
+ // If we failed to find an option and this arg started with /, then it's
+ // probably an input path.
+ if (Str[0] == '/')
+ return new Arg(getOption(TheInputOptionID), Str, Index++, Str);
+
return new Arg(getOption(TheUnknownOptionID), Str, Index++, Str);
}
-InputArgList *OptTable::ParseArgs(const char* const *ArgBegin,
- const char* const *ArgEnd,
+InputArgList *OptTable::ParseArgs(const char *const *ArgBegin,
+ const char *const *ArgEnd,
unsigned &MissingArgIndex,
- unsigned &MissingArgCount) const {
+ unsigned &MissingArgCount,
+ unsigned FlagsToInclude,
+ unsigned FlagsToExclude) const {
InputArgList *Args = new InputArgList(ArgBegin, ArgEnd);
// FIXME: Handle '@' args (or at least error on them).
@@ -241,13 +265,14 @@ InputArgList *OptTable::ParseArgs(const char* const *ArgBegin,
unsigned Index = 0, End = ArgEnd - ArgBegin;
while (Index < End) {
// Ignore empty arguments (other things may still take them as arguments).
- if (Args->getArgString(Index)[0] == '\0') {
+ StringRef Str = Args->getArgString(Index);
+ if (Str == "") {
++Index;
continue;
}
unsigned Prev = Index;
- Arg *A = ParseOneArg(*Args, Index);
+ Arg *A = ParseOneArg(*Args, Index, FlagsToInclude, FlagsToExclude);
assert(Index > Prev && "Parser failed to consume argument.");
// Check for missing argument error.
@@ -281,6 +306,7 @@ static std::string getOptionHelpName(const OptTable &Opts, OptSpecifier Id) {
break;
case Option::SeparateClass: case Option::JoinedOrSeparateClass:
+ case Option::RemainingArgsClass:
Name += ' ';
// FALLTHROUGH
case Option::JoinedClass: case Option::CommaJoinedClass:
@@ -346,8 +372,16 @@ static const char *getOptionHelpGroup(const OptTable &Opts, OptSpecifier Id) {
return getOptionHelpGroup(Opts, GroupID);
}
-void OptTable::PrintHelp(raw_ostream &OS, const char *Name,
- const char *Title, bool ShowHidden) const {
+void OptTable::PrintHelp(raw_ostream &OS, const char *Name, const char *Title,
+ bool ShowHidden) const {
+ PrintHelp(OS, Name, Title, /*Include*/ 0, /*Exclude*/
+ (ShowHidden ? 0 : HelpHidden));
+}
+
+
+void OptTable::PrintHelp(raw_ostream &OS, const char *Name, const char *Title,
+ unsigned FlagsToInclude,
+ unsigned FlagsToExclude) const {
OS << "OVERVIEW: " << Title << "\n";
OS << '\n';
OS << "USAGE: " << Name << " [options] <inputs>\n";
@@ -366,7 +400,10 @@ void OptTable::PrintHelp(raw_ostream &OS, const char *Name,
if (getOptionKind(Id) == Option::GroupClass)
continue;
- if (!ShowHidden && isOptionHelpHidden(Id))
+ unsigned Flags = getInfo(Id).Flags;
+ if (FlagsToInclude && !(Flags & FlagsToInclude))
+ continue;
+ if (Flags & FlagsToExclude)
continue;
if (const char *Text = getOptionHelpText(Id)) {
OpenPOWER on IntegriCloud