Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Option/OptTable.h b/linux-x64/clang/include/llvm/Option/OptTable.h
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+//===- OptTable.h - Option Table --------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_OPTION_OPTTABLE_H
+#define LLVM_OPTION_OPTTABLE_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSet.h"
+#include "llvm/Option/OptSpecifier.h"
+#include <cassert>
+#include <string>
+#include <vector>
+
+namespace llvm {
+
+class raw_ostream;
+
+namespace opt {
+
+class Arg;
+class ArgList;
+class InputArgList;
+class Option;
+
+/// \brief Provide access to the Option info table.
+///
+/// The OptTable class provides a layer of indirection which allows Option
+/// instance to be created lazily. In the common case, only a few options will
+/// be needed at runtime; the OptTable class maintains enough information to
+/// parse command lines without instantiating Options, while letting other
+/// parts of the driver still use Option instances where convenient.
+class OptTable {
+public:
+ /// \brief Entry for a single option instance in the option data table.
+ struct Info {
+ /// A null terminated array of prefix strings to apply to name while
+ /// matching.
+ const char *const *Prefixes;
+ const char *Name;
+ const char *HelpText;
+ const char *MetaVar;
+ unsigned ID;
+ unsigned char Kind;
+ unsigned char Param;
+ unsigned short Flags;
+ unsigned short GroupID;
+ unsigned short AliasID;
+ const char *AliasArgs;
+ const char *Values;
+ };
+
+private:
+ /// \brief The option information table.
+ std::vector<Info> OptionInfos;
+ bool IgnoreCase;
+
+ unsigned TheInputOptionID = 0;
+ unsigned TheUnknownOptionID = 0;
+
+ /// The index of the first option which can be parsed (i.e., is not a
+ /// special option like 'input' or 'unknown', and is not an option group).
+ unsigned FirstSearchableIndex = 0;
+
+ /// The union of all option prefixes. If an argument does not begin with
+ /// one of these, it is an input.
+ StringSet<> PrefixesUnion;
+ std::string PrefixChars;
+
+private:
+ const Info &getInfo(OptSpecifier Opt) const {
+ unsigned id = Opt.getID();
+ assert(id > 0 && id - 1 < getNumOptions() && "Invalid Option ID.");
+ return OptionInfos[id - 1];
+ }
+
+protected:
+ OptTable(ArrayRef<Info> OptionInfos, bool IgnoreCase = false);
+
+public:
+ ~OptTable();
+
+ /// \brief Return the total number of option classes.
+ unsigned getNumOptions() const { return OptionInfos.size(); }
+
+ /// \brief Get the given Opt's Option instance, lazily creating it
+ /// if necessary.
+ ///
+ /// \return The option, or null for the INVALID option id.
+ const Option getOption(OptSpecifier Opt) const;
+
+ /// \brief Lookup the name of the given option.
+ const char *getOptionName(OptSpecifier id) const {
+ return getInfo(id).Name;
+ }
+
+ /// \brief Get the kind of the given option.
+ unsigned getOptionKind(OptSpecifier id) const {
+ return getInfo(id).Kind;
+ }
+
+ /// \brief Get the group id for the given option.
+ unsigned getOptionGroupID(OptSpecifier id) const {
+ return getInfo(id).GroupID;
+ }
+
+ /// \brief Get the help text to use to describe this option.
+ const char *getOptionHelpText(OptSpecifier id) const {
+ return getInfo(id).HelpText;
+ }
+
+ /// \brief Get the meta-variable name to use when describing
+ /// this options values in the help text.
+ const char *getOptionMetaVar(OptSpecifier id) const {
+ return getInfo(id).MetaVar;
+ }
+
+ /// Find possible value for given flags. This is used for shell
+ /// autocompletion.
+ ///
+ /// \param [in] Option - Key flag like "-stdlib=" when "-stdlib=l"
+ /// was passed to clang.
+ ///
+ /// \param [in] Arg - Value which we want to autocomplete like "l"
+ /// when "-stdlib=l" was passed to clang.
+ ///
+ /// \return The vector of possible values.
+ std::vector<std::string> suggestValueCompletions(StringRef Option,
+ StringRef Arg) const;
+
+ /// Find flags from OptTable which starts with Cur.
+ ///
+ /// \param [in] Cur - String prefix that all returned flags need
+ // to start with.
+ ///
+ /// \return The vector of flags which start with Cur.
+ std::vector<std::string> findByPrefix(StringRef Cur,
+ unsigned short DisableFlags) const;
+
+ /// Find the OptTable option that most closely matches the given string.
+ ///
+ /// \param [in] Option - A string, such as "-stdlibs=l", that represents user
+ /// input of an option that may not exist in the OptTable. Note that the
+ /// string includes prefix dashes "-" as well as values "=l".
+ /// \param [out] NearestString - The nearest option string found in the
+ /// OptTable.
+ /// \param [in] FlagsToInclude - Only find options with any of these flags.
+ /// Zero is the default, which includes all flags.
+ /// \param [in] FlagsToExclude - Don't find options with this flag. Zero
+ /// is the default, and means exclude nothing.
+ /// \param [in] MinimumLength - Don't find options shorter than this length.
+ /// For example, a minimum length of 3 prevents "-x" from being considered
+ /// near to "-S".
+ ///
+ /// \return The edit distance of the nearest string found.
+ unsigned findNearest(StringRef Option, std::string &NearestString,
+ unsigned FlagsToInclude = 0, unsigned FlagsToExclude = 0,
+ unsigned MinimumLength = 4) const;
+
+ /// Add Values to Option's Values class
+ ///
+ /// \param [in] Option - Prefix + Name of the flag which Values will be
+ /// changed. For example, "-analyzer-checker".
+ /// \param [in] Values - String of Values seperated by ",", such as
+ /// "foo, bar..", where foo and bar is the argument which the Option flag
+ /// takes
+ ///
+ /// \return true in success, and false in fail.
+ bool addValues(const char *Option, const char *Values);
+
+ /// \brief Parse a single argument; returning the new argument and
+ /// updating Index.
+ ///
+ /// \param [in,out] Index - The current parsing position in the argument
+ /// string list; on return this will be the index of the next argument
+ /// string to parse.
+ /// \param [in] FlagsToInclude - Only parse options with any of these flags.
+ /// Zero is the default which includes all flags.
+ /// \param [in] FlagsToExclude - Don't parse options with this flag. Zero
+ /// is the default and means exclude nothing.
+ ///
+ /// \return The parsed argument, or 0 if the argument is missing values
+ /// (in which case Index still points at the conceptual next argument string
+ /// to parse).
+ Arg *ParseOneArg(const ArgList &Args, unsigned &Index,
+ unsigned FlagsToInclude = 0,
+ unsigned FlagsToExclude = 0) const;
+
+ /// \brief Parse an list of arguments into an InputArgList.
+ ///
+ /// The resulting InputArgList will reference the strings in [\p ArgBegin,
+ /// \p ArgEnd), and their lifetime should extend past that of the returned
+ /// InputArgList.
+ ///
+ /// The only error that can occur in this routine is if an argument is
+ /// missing values; in this case \p MissingArgCount will be non-zero.
+ ///
+ /// \param MissingArgIndex - On error, the index of the option which could
+ /// not be parsed.
+ /// \param MissingArgCount - On error, the number of missing options.
+ /// \param FlagsToInclude - Only parse options with any of these flags.
+ /// Zero is the default which includes all flags.
+ /// \param FlagsToExclude - Don't parse options with this flag. Zero
+ /// is the default and means exclude nothing.
+ /// \return An InputArgList; on error this will contain all the options
+ /// which could be parsed.
+ InputArgList ParseArgs(ArrayRef<const char *> Args, unsigned &MissingArgIndex,
+ unsigned &MissingArgCount, unsigned FlagsToInclude = 0,
+ unsigned FlagsToExclude = 0) const;
+
+ /// \brief Render the help text for an option table.
+ ///
+ /// \param OS - The stream to write the help text to.
+ /// \param Name - The name to use in the usage line.
+ /// \param Title - The title to use in the usage line.
+ /// \param FlagsToInclude - If non-zero, only include options with any
+ /// of these flags set.
+ /// \param FlagsToExclude - Exclude options with any of these flags set.
+ /// \param ShowAllAliases - If true, display all options including aliases
+ /// that don't have help texts. By default, we display
+ /// only options that are not hidden and have help
+ /// texts.
+ void PrintHelp(raw_ostream &OS, const char *Name, const char *Title,
+ unsigned FlagsToInclude, unsigned FlagsToExclude,
+ bool ShowAllAliases) const;
+
+ void PrintHelp(raw_ostream &OS, const char *Name, const char *Title,
+ bool ShowHidden = false, bool ShowAllAliases = false) const;
+};
+
+} // end namespace opt
+
+} // end namespace llvm
+
+#endif // LLVM_OPTION_OPTTABLE_H