mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-14 07:31:53 +00:00
0583c9334d
idiom.
Most LLVM tool code exits immediately when an error is encountered and prints an
error message to stderr. The ExitOnError class supports this by providing two
call operators - one for Errors, and one for Expected<T>s. Calls to code that
can return Errors (or Expected<T>s) can use these calls to bail out on error,
and otherwise continue as if the operation had succeeded. E.g.
Error foo();
Expected<int> bar();
int main(int argc, char *argv[]) {
ExitOnError ExitOnErr;
ExitOnErr.setBanner(std::string("Error in ") + argv[0] + ":");
// Exit if foo returns an error. No need to manually check error return.
ExitOnErr(foo());
// Exit if bar returns an error, otherwise unwrap the contained int and
// continue.
int X = ExitOnErr(bar());
// ...
return 0;
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263749 91177308-0d34-0410-b5e6-96231b3b80d8
|
||
|---|---|---|
| .. | ||
| ADT | ||
| Analysis | ||
| AsmParser | ||
| Bitcode | ||
| CodeGen | ||
| DebugInfo | ||
| ExecutionEngine | ||
| IR | ||
| LineEditor | ||
| Linker | ||
| MC | ||
| MI | ||
| ObjectYAML | ||
| Option | ||
| ProfileData | ||
| Support | ||
| Transforms | ||
| CMakeLists.txt | ||