[GSoC] Flag value completion for clang
This is patch for GSoC project, bash-completion for clang.
To use this on bash, please run `source clang/utils/bash-autocomplete.sh`.
bash-autocomplete.sh is code for bash-completion.
In this patch, Options.td was mainly changed in order to add value class
in Options.inc.
llvm-svn: 305805
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index eb504fd..850f6bc 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1227,7 +1227,25 @@
if (Arg *A = C.getArgs().getLastArg(options::OPT_autocomplete)) {
// Print out all options that start with a given argument. This is used for
// shell autocompletion.
- llvm::outs() << llvm::join(Opts->findByPrefix(A->getValue()), " ") << '\n';
+ StringRef PassedFlags = A->getValue();
+ std::vector<std::string> SuggestedCompletions;
+
+ 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);
+ } 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
+ // "bar". For example,
+ // "--autocomplete=-stdlib=,l" is expanded to "libc++" and "libstdc++".
+ StringRef Option, Arg;
+ std::tie(Option, Arg) = PassedFlags.split(',');
+ SuggestedCompletions = Opts->suggestValueCompletions(Option, Arg);
+ }
+
+ llvm::outs() << llvm::join(SuggestedCompletions, " ") << '\n';
return false;
}