Driver: Prep for tool chain specific argument translation.

 - Lift ArgList to a base class for InputArgList and DerivedArgList.
 
 - This is not a great decomposition, but it does embed the
   translation into the type system, and keep things efficient for
   tool chains that don't want to do any translation.

 - No intended functionality change.

Eventually I hope to get rid of tool chain specific translation and
have each tool do the right thing, but for now this is the easiest way
to match gcc precisely (which is good for testing).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67676 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 10 deletions

diff --git a/lib/Driver/Option.cpp b/lib/Driver/Option.cpp
index dc681c7295..6ea02aaf40 100644
--- a/lib/Driver/Option.cpp
+++ b/lib/Driver/Option.cpp
@@ -107,7 +107,7 @@ OptionGroup::OptionGroup(options::ID ID, const char *Name,
   : Option(Option::GroupClass, ID, Name, Group, 0) {
 }
 
-Arg *OptionGroup::accept(const ArgList &Args, unsigned &Index) const {
+Arg *OptionGroup::accept(const InputArgList &Args, unsigned &Index) const {
   assert(0 && "accept() should never be called on an OptionGroup");
   return 0;
 }
@@ -116,7 +116,7 @@ InputOption::InputOption()
   : Option(Option::InputClass, options::OPT_INPUT, "<input>", 0, 0) {
 }
 
-Arg *InputOption::accept(const ArgList &Args, unsigned &Index) const {
+Arg *InputOption::accept(const InputArgList &Args, unsigned &Index) const {
   assert(0 && "accept() should never be called on an InputOption");
   return 0;
 }
@@ -125,7 +125,7 @@ UnknownOption::UnknownOption()
   : Option(Option::UnknownClass, options::OPT_UNKNOWN, "<unknown>", 0, 0) {
 }
 
-Arg *UnknownOption::accept(const ArgList &Args, unsigned &Index) const {
+Arg *UnknownOption::accept(const InputArgList &Args, unsigned &Index) const {
   assert(0 && "accept() should never be called on an UnknownOption");
   return 0;
 }
@@ -135,7 +135,7 @@ FlagOption::FlagOption(options::ID ID, const char *Name,
   : Option(Option::FlagClass, ID, Name, Group, Alias) {
 }
 
-Arg *FlagOption::accept(const ArgList &Args, unsigned &Index) const {
+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)))
@@ -149,7 +149,7 @@ JoinedOption::JoinedOption(options::ID ID, const char *Name,
   : Option(Option::JoinedClass, ID, Name, Group, Alias) {
 }
 
-Arg *JoinedOption::accept(const ArgList &Args, unsigned &Index) const {
+Arg *JoinedOption::accept(const InputArgList &Args, unsigned &Index) const {
   // Always matches.
   return new JoinedArg(this, Index++);
 }
@@ -160,7 +160,8 @@ CommaJoinedOption::CommaJoinedOption(options::ID ID, const char *Name,
   : Option(Option::CommaJoinedClass, ID, Name, Group, Alias) {
 }
 
-Arg *CommaJoinedOption::accept(const ArgList &Args, unsigned &Index) const {
+Arg *CommaJoinedOption::accept(const InputArgList &Args, 
+                               unsigned &Index) const {
   // Always matches. We count the commas now so we can answer
   // getNumValues easily.
   
@@ -175,7 +176,7 @@ SeparateOption::SeparateOption(options::ID ID, const char *Name,
   : Option(Option::SeparateClass, ID, Name, Group, Alias) {
 }
 
-Arg *SeparateOption::accept(const ArgList &Args, unsigned &Index) const {
+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)))
@@ -195,7 +196,7 @@ MultiArgOption::MultiArgOption(options::ID ID, const char *Name,
   assert(NumArgs > 1  && "Invalid MultiArgOption!");
 }
 
-Arg *MultiArgOption::accept(const ArgList &Args, unsigned &Index) const {
+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)))
@@ -214,7 +215,7 @@ JoinedOrSeparateOption::JoinedOrSeparateOption(options::ID ID, const char *Name,
   : Option(Option::JoinedOrSeparateClass, ID, Name, Group, Alias) {
 }
 
-Arg *JoinedOrSeparateOption::accept(const ArgList &Args, 
+Arg *JoinedOrSeparateOption::accept(const InputArgList &Args, 
                                     unsigned &Index) const {
   // If this is not an exact match, it is a joined arg.
   // FIXME: Avoid strlen.
@@ -236,7 +237,7 @@ JoinedAndSeparateOption::JoinedAndSeparateOption(options::ID ID,
   : Option(Option::JoinedAndSeparateClass, ID, Name, Group, Alias) {
 }
 
-Arg *JoinedAndSeparateOption::accept(const ArgList &Args, 
+Arg *JoinedAndSeparateOption::accept(const InputArgList &Args, 
                                      unsigned &Index) const {
   // Always matches.