Add support for lexing single quotes like 'c'.
This fixed 8615.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122150 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmLexer.cpp b/lib/MC/MCParser/AsmLexer.cpp
index 867cb20..085d519 100644
--- a/lib/MC/MCParser/AsmLexer.cpp
+++ b/lib/MC/MCParser/AsmLexer.cpp
@@ -265,6 +265,42 @@
return AsmToken(AsmToken::Integer, Result, Value);
}
+/// LexSingleQuote: Integer: 'b'
+AsmToken AsmLexer::LexSingleQuote() {
+ int CurChar = getNextChar();
+
+ if (CurChar == '\\')
+ CurChar = getNextChar();
+
+ if (CurChar == EOF)
+ return ReturnError(TokStart, "unterminated single quote");
+
+ CurChar = getNextChar();
+
+ if (CurChar != '\'')
+ return ReturnError(TokStart, "single quote way too long");
+
+ // The idea here being that 'c' is basically just an integral
+ // constant.
+ StringRef Res = StringRef(TokStart,CurPtr - TokStart);
+ long long Value;
+
+ if (Res.startswith("\'\\")) {
+ char theChar = Res[2];
+ switch (theChar) {
+ default: Value = theChar; break;
+ case '\'': Value = '\''; break;
+ case 't': Value = '\t'; break;
+ case 'n': Value = '\n'; break;
+ case 'b': Value = '\b'; break;
+ }
+ } else
+ Value = TokStart[1];
+
+ return AsmToken(AsmToken::Integer, Res, Value);
+}
+
+
/// LexQuote: String: "..."
AsmToken AsmLexer::LexQuote() {
int CurChar = getNextChar();
@@ -361,6 +397,7 @@
case '%': return AsmToken(AsmToken::Percent, StringRef(TokStart, 1));
case '/': return LexSlash();
case '#': return AsmToken(AsmToken::Hash, StringRef(TokStart, 1));
+ case '\'': return LexSingleQuote();
case '"': return LexQuote();
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':