Filled out the skeleton of the TargetAsmLexer to behave
exactly like an MCAsmLexer. (The difference is that the
TargetAsmLexer knows how to handle target-specific stuff
like registers, whereas the MCAsmLexer is fully generic.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94237 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Target/TargetAsmLexer.h b/include/llvm/Target/TargetAsmLexer.h
index 998f5ba..daba1ba 100644
--- a/include/llvm/Target/TargetAsmLexer.h
+++ b/include/llvm/Target/TargetAsmLexer.h
@@ -10,16 +10,32 @@
#ifndef LLVM_TARGET_TARGETASMLEXER_H
#define LLVM_TARGET_TARGETASMLEXER_H
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+
namespace llvm {
class Target;
/// TargetAsmLexer - Generic interface to target specific assembly lexers.
class TargetAsmLexer {
+ /// The current token
+ AsmToken CurTok;
+
+ /// The location and description of the current error
+ SMLoc ErrLoc;
+ std::string Err;
+
TargetAsmLexer(const TargetAsmLexer &); // DO NOT IMPLEMENT
void operator=(const TargetAsmLexer &); // DO NOT IMPLEMENT
protected: // Can only create subclasses.
TargetAsmLexer(const Target &);
+ virtual AsmToken LexToken() = 0;
+
+ void SetError(const SMLoc &errLoc, const std::string &err) {
+ ErrLoc = errLoc;
+ Err = err;
+ }
+
/// TheTarget - The Target that this machine was created for.
const Target &TheTarget;
@@ -28,7 +44,34 @@
const Target &getTarget() const { return TheTarget; }
+ /// Lex - Consume the next token from the input stream and return it.
+ const AsmToken &Lex() {
+ return CurTok = LexToken();
+ }
+ /// getTok - Get the current (last) lexed token.
+ const AsmToken &getTok() {
+ return CurTok;
+ }
+
+ /// getErrLoc - Get the current error location
+ const SMLoc &getErrLoc() {
+ return ErrLoc;
+ }
+
+ /// getErr - Get the current error string
+ const std::string &getErr() {
+ return Err;
+ }
+
+ /// getKind - Get the kind of current token.
+ AsmToken::TokenKind getKind() const { return CurTok.getKind(); }
+
+ /// is - Check if the current token has kind \arg K.
+ bool is(AsmToken::TokenKind K) const { return CurTok.is(K); }
+
+ /// isNot - Check if the current token has kind \arg K.
+ bool isNot(AsmToken::TokenKind K) const { return CurTok.isNot(K); }
};
} // End llvm namespace