From 5458663492078f2bf1fee1aabe1a8aaf87ff9f0e Mon Sep 17 00:00:00 2001
From: Sean Callanan <scallanan@apple.com>
Date: Sun, 31 Jan 2010 02:28:18 +0000
Subject: [PATCH] Moved InstallLexer() from the X86-specific AsmLexer to the
 TargetAsmLexer class so that clients can actually use the TargetAsmLexer they
 get from a Target.

llvm-svn: 94940
---
 include/llvm/Target/TargetAsmLexer.h     | 10 ++++++++++
 lib/Target/TargetAsmLexer.cpp            |  2 +-
 lib/Target/X86/AsmParser/X86AsmLexer.cpp | 11 +++--------
 3 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/include/llvm/Target/TargetAsmLexer.h b/include/llvm/Target/TargetAsmLexer.h
index daba1ba88b9..9fcf449a86c 100644
--- a/include/llvm/Target/TargetAsmLexer.h
+++ b/include/llvm/Target/TargetAsmLexer.h
@@ -38,12 +38,22 @@ protected: // Can only create subclasses.
   
   /// TheTarget - The Target that this machine was created for.
   const Target &TheTarget;
+  MCAsmLexer *Lexer;
   
 public:
   virtual ~TargetAsmLexer();
   
   const Target &getTarget() const { return TheTarget; }
   
+  /// InstallLexer - Set the lexer to get tokens from lower-level lexer \arg L.
+  void InstallLexer(MCAsmLexer &L) {
+    Lexer = &L;
+  }
+  
+  MCAsmLexer *getLexer() {
+    return Lexer;
+  }
+  
   /// Lex - Consume the next token from the input stream and return it.
   const AsmToken &Lex() {
     return CurTok = LexToken();
diff --git a/lib/Target/TargetAsmLexer.cpp b/lib/Target/TargetAsmLexer.cpp
index 0ae6c14b6bd..d4893ff2521 100644
--- a/lib/Target/TargetAsmLexer.cpp
+++ b/lib/Target/TargetAsmLexer.cpp
@@ -10,5 +10,5 @@
 #include "llvm/Target/TargetAsmLexer.h"
 using namespace llvm;
 
-TargetAsmLexer::TargetAsmLexer(const Target &T) : TheTarget(T) {}
+TargetAsmLexer::TargetAsmLexer(const Target &T) : TheTarget(T), Lexer(NULL) {}
 TargetAsmLexer::~TargetAsmLexer() {}
diff --git a/lib/Target/X86/AsmParser/X86AsmLexer.cpp b/lib/Target/X86/AsmParser/X86AsmLexer.cpp
index 3998b085883..71972176c02 100644
--- a/lib/Target/X86/AsmParser/X86AsmLexer.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmLexer.cpp
@@ -22,13 +22,12 @@ namespace {
   
 class X86AsmLexer : public TargetAsmLexer {
   const MCAsmInfo &AsmInfo;
-  MCAsmLexer *Lexer;
   
   bool tentativeIsValid;
   AsmToken tentativeToken;
   
   const AsmToken &lexTentative() {
-    tentativeToken = Lexer->Lex();
+    tentativeToken = getLexer()->Lex();
     tentativeIsValid = true;
     return tentativeToken;
   }
@@ -39,7 +38,7 @@ class X86AsmLexer : public TargetAsmLexer {
       return tentativeToken;
     }
     else {
-      return Lexer->Lex();
+      return getLexer()->Lex();
     }
   }
   
@@ -64,11 +63,7 @@ protected:
   }
 public:
   X86AsmLexer(const Target &T, const MCAsmInfo &MAI)
-    : TargetAsmLexer(T), AsmInfo(MAI), Lexer(NULL), tentativeIsValid(false) {
-  }
-  
-  void InstallLexer(MCAsmLexer &L) {
-    Lexer = &L;
+    : TargetAsmLexer(T), AsmInfo(MAI), tentativeIsValid(false) {
   }
 };