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use early exits to reduce nesting.

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llvm-svn: 61642
This commit is contained in:
Chris Lattner 2009-01-04 22:32:19 +00:00
parent 8a38aa83da
commit dfa1a45abd
1 changed files with 31 additions and 30 deletions
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61
clang/lib/Parse/Parser.cpp
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@ -784,48 +784,49 @@ void Parser::TryAnnotateTypeOrScopeToken() {
// FIXME: check for a template-id token here, and look it up if it
// names a type.
if (SS.isNotEmpty()) {
// A C++ scope specifier that isn't followed by a typename.
// Push the current token back into the token stream (or revert it if it is
// cached) and use an annotation scope token for current token.
if (PP.isBacktrackEnabled())
PP.RevertCachedTokens(1);
else
PP.EnterToken(Tok);
Tok.setKind(tok::annot_cxxscope);
Tok.setAnnotationValue(SS.getScopeRep());
Tok.setAnnotationRange(SS.getRange());
if (SS.isEmpty())
return;
// A C++ scope specifier that isn't followed by a typename.
// Push the current token back into the token stream (or revert it if it is
// cached) and use an annotation scope token for current token.
if (PP.isBacktrackEnabled())
PP.RevertCachedTokens(1);
else
PP.EnterToken(Tok);
Tok.setKind(tok::annot_cxxscope);
Tok.setAnnotationValue(SS.getScopeRep());
Tok.setAnnotationRange(SS.getRange());
// In case the tokens were cached, have Preprocessor replace them with the
// annotation token.
PP.AnnotateCachedTokens(Tok);
}
// In case the tokens were cached, have Preprocessor replace them with the
// annotation token.
PP.AnnotateCachedTokens(Tok);
}
/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only
/// annotates C++ scope specifiers.
void Parser::TryAnnotateCXXScopeToken() {
assert(getLang().CPlusPlus &&
"Call sites of this function should be guarded by checking for C++.");
"Call sites of this function should be guarded by checking for C++");
if (Tok.is(tok::annot_cxxscope))
return;
CXXScopeSpec SS;
if (MaybeParseCXXScopeSpecifier(SS)) {
if (!MaybeParseCXXScopeSpecifier(SS))
return;
// Push the current token back into the token stream (or revert it if it is
// cached) and use an annotation scope token for current token.
if (PP.isBacktrackEnabled())
PP.RevertCachedTokens(1);
else
PP.EnterToken(Tok);
Tok.setKind(tok::annot_cxxscope);
Tok.setAnnotationValue(SS.getScopeRep());
Tok.setAnnotationRange(SS.getRange());
// Push the current token back into the token stream (or revert it if it is
// cached) and use an annotation scope token for current token.
if (PP.isBacktrackEnabled())
PP.RevertCachedTokens(1);
else
PP.EnterToken(Tok);
Tok.setKind(tok::annot_cxxscope);
Tok.setAnnotationValue(SS.getScopeRep());
Tok.setAnnotationRange(SS.getRange());
// In case the tokens were cached, have Preprocessor replace them with the
// annotation token.
PP.AnnotateCachedTokens(Tok);
}
// In case the tokens were cached, have Preprocessor replace them with the
// annotation token.
PP.AnnotateCachedTokens(Tok);
}