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author | ed <ed@FreeBSD.org> | 2009-06-02 17:58:47 +0000 |
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committer | ed <ed@FreeBSD.org> | 2009-06-02 17:58:47 +0000 |
commit | f27e5a09a0d815b8a4814152954ff87dadfdefc0 (patch) | |
tree | ce7d964cbb5e39695b71481698f10cb099c23d4a /lib/Driver/Option.cpp | |
download | FreeBSD-src-f27e5a09a0d815b8a4814152954ff87dadfdefc0.zip FreeBSD-src-f27e5a09a0d815b8a4814152954ff87dadfdefc0.tar.gz |
Import Clang, at r72732.
Diffstat (limited to 'lib/Driver/Option.cpp')
-rw-r--r-- | lib/Driver/Option.cpp | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/lib/Driver/Option.cpp b/lib/Driver/Option.cpp new file mode 100644 index 0000000..cad2bbf --- /dev/null +++ b/lib/Driver/Option.cpp @@ -0,0 +1,250 @@ +//===--- Option.cpp - Abstract Driver Options ---------------------------*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "clang/Driver/Option.h" + +#include "clang/Driver/Arg.h" +#include "clang/Driver/ArgList.h" +#include "llvm/Support/raw_ostream.h" +#include <cassert> +#include <algorithm> +using namespace clang::driver; + +Option::Option(OptionClass _Kind, options::ID _ID, const char *_Name, + const OptionGroup *_Group, const Option *_Alias) + : Kind(_Kind), ID(_ID), Name(_Name), Group(_Group), Alias(_Alias), + Unsupported(false), LinkerInput(false), NoOptAsInput(false), + ForceSeparateRender(false), ForceJoinedRender(false), + DriverOption(false), NoArgumentUnused(false) +{ + + // Multi-level aliases are not supported, and alias options cannot + // have groups. This just simplifies option tracking, it is not an + // inherent limitation. + assert((!Alias || (!Alias->Alias && !Group)) && + "Multi-level aliases and aliases with groups are unsupported."); +} + +Option::~Option() { +} + +void Option::dump() const { + llvm::errs() << "<"; + switch (Kind) { + default: + assert(0 && "Invalid kind"); +#define P(N) case N: llvm::errs() << #N; break + P(GroupClass); + P(InputClass); + P(UnknownClass); + P(FlagClass); + P(JoinedClass); + P(SeparateClass); + P(CommaJoinedClass); + P(MultiArgClass); + P(JoinedOrSeparateClass); + P(JoinedAndSeparateClass); +#undef P + } + + llvm::errs() << " Name:\"" << Name << '"'; + + if (Group) { + llvm::errs() << " Group:"; + Group->dump(); + } + + if (Alias) { + llvm::errs() << " Alias:"; + Alias->dump(); + } + + if (const MultiArgOption *MOA = dyn_cast<MultiArgOption>(this)) + llvm::errs() << " NumArgs:" << MOA->getNumArgs(); + + llvm::errs() << ">\n"; +} + +bool Option::matches(const Option *Opt) const { + // Aliases are never considered in matching. + if (Opt->getAlias()) + return matches(Opt->getAlias()); + if (Alias) + return Alias->matches(Opt); + + if (this == Opt) + return true; + + if (Group) + return Group->matches(Opt); + return false; +} + +bool Option::matches(options::ID Id) const { + // FIXME: Decide what to do here; we should either pull out the + // handling of alias on the option for Id from the other matches, or + // find some other solution (which hopefully doesn't require using + // the option table). + if (Alias) + return Alias->matches(Id); + + if (ID == Id) + return true; + + if (Group) + return Group->matches(Id); + return false; +} + +OptionGroup::OptionGroup(options::ID ID, const char *Name, + const OptionGroup *Group) + : Option(Option::GroupClass, ID, Name, Group, 0) { +} + +Arg *OptionGroup::accept(const InputArgList &Args, unsigned &Index) const { + assert(0 && "accept() should never be called on an OptionGroup"); + return 0; +} + +InputOption::InputOption() + : Option(Option::InputClass, options::OPT_INPUT, "<input>", 0, 0) { +} + +Arg *InputOption::accept(const InputArgList &Args, unsigned &Index) const { + assert(0 && "accept() should never be called on an InputOption"); + return 0; +} + +UnknownOption::UnknownOption() + : Option(Option::UnknownClass, options::OPT_UNKNOWN, "<unknown>", 0, 0) { +} + +Arg *UnknownOption::accept(const InputArgList &Args, unsigned &Index) const { + assert(0 && "accept() should never be called on an UnknownOption"); + return 0; +} + +FlagOption::FlagOption(options::ID ID, const char *Name, + const OptionGroup *Group, const Option *Alias) + : Option(Option::FlagClass, ID, Name, Group, Alias) { +} + +Arg *FlagOption::accept(const InputArgList &Args, unsigned &Index) const { + // Matches iff this is an exact match. + // FIXME: Avoid strlen. + if (strlen(getName()) != strlen(Args.getArgString(Index))) + return 0; + + return new FlagArg(this, Index++); +} + +JoinedOption::JoinedOption(options::ID ID, const char *Name, + const OptionGroup *Group, const Option *Alias) + : Option(Option::JoinedClass, ID, Name, Group, Alias) { +} + +Arg *JoinedOption::accept(const InputArgList &Args, unsigned &Index) const { + // Always matches. + return new JoinedArg(this, Index++); +} + +CommaJoinedOption::CommaJoinedOption(options::ID ID, const char *Name, + const OptionGroup *Group, + const Option *Alias) + : Option(Option::CommaJoinedClass, ID, Name, Group, Alias) { +} + +Arg *CommaJoinedOption::accept(const InputArgList &Args, + unsigned &Index) const { + // Always matches. We count the commas now so we can answer + // getNumValues easily. + + // Get the suffix string. + // FIXME: Avoid strlen, and move to helper method? + const char *Suffix = Args.getArgString(Index) + strlen(getName()); + return new CommaJoinedArg(this, Index++, Suffix); +} + +SeparateOption::SeparateOption(options::ID ID, const char *Name, + const OptionGroup *Group, const Option *Alias) + : Option(Option::SeparateClass, ID, Name, Group, Alias) { +} + +Arg *SeparateOption::accept(const InputArgList &Args, unsigned &Index) const { + // Matches iff this is an exact match. + // FIXME: Avoid strlen. + if (strlen(getName()) != strlen(Args.getArgString(Index))) + return 0; + + Index += 2; + if (Index > Args.getNumInputArgStrings()) + return 0; + + return new SeparateArg(this, Index - 2, 1); +} + +MultiArgOption::MultiArgOption(options::ID ID, const char *Name, + const OptionGroup *Group, const Option *Alias, + unsigned _NumArgs) + : Option(Option::MultiArgClass, ID, Name, Group, Alias), NumArgs(_NumArgs) { + assert(NumArgs > 1 && "Invalid MultiArgOption!"); +} + +Arg *MultiArgOption::accept(const InputArgList &Args, unsigned &Index) const { + // Matches iff this is an exact match. + // FIXME: Avoid strlen. + if (strlen(getName()) != strlen(Args.getArgString(Index))) + return 0; + + Index += 1 + NumArgs; + if (Index > Args.getNumInputArgStrings()) + return 0; + + return new SeparateArg(this, Index - 1 - NumArgs, NumArgs); +} + +JoinedOrSeparateOption::JoinedOrSeparateOption(options::ID ID, const char *Name, + const OptionGroup *Group, + const Option *Alias) + : Option(Option::JoinedOrSeparateClass, ID, Name, Group, Alias) { +} + +Arg *JoinedOrSeparateOption::accept(const InputArgList &Args, + unsigned &Index) const { + // If this is not an exact match, it is a joined arg. + // FIXME: Avoid strlen. + if (strlen(getName()) != strlen(Args.getArgString(Index))) + return new JoinedArg(this, Index++); + + // Otherwise it must be separate. + Index += 2; + if (Index > Args.getNumInputArgStrings()) + return 0; + + return new SeparateArg(this, Index - 2, 1); +} + +JoinedAndSeparateOption::JoinedAndSeparateOption(options::ID ID, + const char *Name, + const OptionGroup *Group, + const Option *Alias) + : Option(Option::JoinedAndSeparateClass, ID, Name, Group, Alias) { +} + +Arg *JoinedAndSeparateOption::accept(const InputArgList &Args, + unsigned &Index) const { + // Always matches. + + Index += 2; + if (Index > Args.getNumInputArgStrings()) + return 0; + + return new JoinedAndSeparateArg(this, Index - 2); +} + |