[cfe-commits] [PATCH] StringRef'ize API: clang::Token::getName()
Chris Lattner
clattner at apple.com
Mon Jun 27 17:14:08 PDT 2011
On Jun 25, 2011, at 2:55 PM, Zach Wheeler wrote:
> This patch is intended to change clang::Token::getName() so that it returns llvm::StringRef instead of const char*.
>
> This is my first patch (ever), so if I did something I wasn't supposed to, just scream at me and I'll try to fix it. :-)
>
> This turned out to be an easy place to start; the doxygen reference indicates that this method isn't referenced at all. Clang built fine with these changes.
Hi Zach,
This is a great start, but I'd prefer to not change these: if they aren't called at all, please send in a patch to nuke them :). Also, since these are just returning constant C strings, a "const char*" is actually good enough. The places that we'd like to convert to StringRef are ones that are manually implementing the same thing (by taking two const char*'s, or a pointer+size).
Thanks again for working on this area!
-Chris
>
> Regards,
> ZJ
>
>
>
> Index: include/clang/Basic/TokenKinds.h
> ===================================================================
> --- TokenKinds.h (revision 133818)
> +++ TokenKinds.h (working copy)
> @@ -14,6 +14,10 @@
> #ifndef LLVM_CLANG_TOKENKINDS_H
> #define LLVM_CLANG_TOKENKINDS_H
>
> +namespace llvm {
> + class StringRef;
> +}
> +
> namespace clang {
>
> namespace tok {
> @@ -53,7 +57,7 @@
> ///
> /// The name of a token will be an internal name (such as "l_square")
> /// and should not be used as part of diagnostic messages.
> -const char *getTokenName(enum TokenKind Kind);
> +llvm::StringRef getTokenName(enum TokenKind Kind);
>
> /// \brief Determines the spelling of simple punctuation tokens like
> /// '!' or '%', and returns NULL for literal and annotation tokens.
>
> Index: lib/Basic/TokenKinds.cpp
> ===================================================================
> --- TokenKinds.cpp (revision 133818)
> +++ TokenKinds.cpp (working copy)
> @@ -12,7 +12,7 @@
> //===----------------------------------------------------------------------===//
>
> #include "clang/Basic/TokenKinds.h"
> -
> +#include "llvm/ADT/StringRef.h"
> #include <cassert>
> using namespace clang;
>
> @@ -23,9 +23,9 @@
> 0
> };
>
> -const char *tok::getTokenName(enum TokenKind Kind) {
> +llvm::StringRef tok::getTokenName(enum TokenKind Kind) {
> assert(Kind < tok::NUM_TOKENS);
> - return TokNames[Kind];
> + return llvm::StringRef(TokNames[Kind]);
> }
>
> const char *tok::getTokenSimpleSpelling(enum TokenKind Kind) {
>
> Index: include/clang/Lex/Token.h
> ===================================================================
> --- Token.h (revision 133818)
> +++ Token.h (working copy)
> @@ -18,6 +18,7 @@
> #include "clang/Basic/TokenKinds.h"
> #include "clang/Basic/SourceLocation.h"
> #include "clang/Basic/OperatorKinds.h"
> +#include "llvm/ADT/StringRef.h"
> #include <cstdlib>
>
> namespace clang {
> @@ -145,7 +146,7 @@
> setAnnotationEndLoc(R.getEnd());
> }
>
> - const char *getName() const {
> + llvm::StringRef getName() const {
> return tok::getTokenName( (tok::TokenKind) Kind);
> }
>
>
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