[Bash-autocompletion] Auto complete cc1 options if -cc1 is specified
Summary:
We don't want to autocomplete flags whose Flags class has `NoDriverOption` when argv[1] is not `-cc1`.
Another idea for this implementation is to make --autocomplete a cc1
option and handle it in clang Frontend, by porting --autocomplete
handler from Driver to Frontend, so that we can handle Driver options
and CC1 options in unified manner.
Differential Revision: https://reviews.llvm.org/D34770
llvm-svn: 307479
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 8031d78..4247801 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1261,11 +1261,20 @@
StringRef PassedFlags = A->getValue();
std::vector<std::string> SuggestedCompletions;
+ unsigned short DisableFlags = options::NoDriverOption | options::Unsupported | options::Ignored;
+ // We want to show cc1-only options only when clang is invoked as "clang -cc1".
+ // When clang is invoked as "clang -cc1", we add "#" to the beginning of an --autocomplete
+ // option so that the clang driver can distinguish whether it is requested to show cc1-only options or not.
+ if (PassedFlags[0] == '#') {
+ DisableFlags &= ~options::NoDriverOption;
+ PassedFlags = PassedFlags.substr(1);
+ }
+
if (PassedFlags.find(',') == StringRef::npos) {
// If the flag is in the form of "--autocomplete=-foo",
// we were requested to print out all option names that start with "-foo".
// For example, "--autocomplete=-fsyn" is expanded to "-fsyntax-only".
- SuggestedCompletions = Opts->findByPrefix(PassedFlags);
+ SuggestedCompletions = Opts->findByPrefix(PassedFlags, DisableFlags);
} else {
// If the flag is in the form of "--autocomplete=foo,bar", we were
// requested to print out all option values for "-foo" that start with