Implement Diagnostic::getWarningOptionForDiag with information from tblgen,
this implements -fdiagnostics-show-option in clang-cc.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69271 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Diagnostic.cpp b/lib/Basic/Diagnostic.cpp
index b26d085..b541d08 100644
--- a/lib/Basic/Diagnostic.cpp
+++ b/lib/Basic/Diagnostic.cpp
@@ -35,16 +35,17 @@
//===----------------------------------------------------------------------===//
// DefaultDiagnosticMappings - This specifies the default mapping for each diag,
-// based on its kind. Yay for macros?
+// based on its kind.
-struct DefaultMappingInfo {
+struct StaticDiagInfoRec {
unsigned DiagID : 14;
unsigned Mapping : 2;
+ const char *OptionGroup;
};
-static const DefaultMappingInfo DefaultMappings[] = {
+static const StaticDiagInfoRec StaticDiagInfo[] = {
#define DIAG(ENUM,CLASS,DEFAULT_MAPPING,DESC,GROUP) \
- { diag::ENUM, DEFAULT_MAPPING-1 },
+ { diag::ENUM, DEFAULT_MAPPING-1, GROUP },
#include "clang/Basic/DiagnosticCommonKinds.inc"
#include "clang/Basic/DiagnosticDriverKinds.inc"
#include "clang/Basic/DiagnosticFrontendKinds.inc"
@@ -53,16 +54,22 @@
#include "clang/Basic/DiagnosticASTKinds.inc"
#include "clang/Basic/DiagnosticSemaKinds.inc"
#include "clang/Basic/DiagnosticAnalysisKinds.inc"
-{ 0, 0 }
+{ 0, 0, 0 }
};
#undef DIAG
-static unsigned GetDefaultDiagMapping(unsigned DiagID) {
+static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) {
// FIXME: Binary search.
- for (unsigned i = 0, e = sizeof(DefaultMappings)/sizeof(DefaultMappings[0]);
+ for (unsigned i = 0, e = sizeof(StaticDiagInfo)/sizeof(StaticDiagInfo[0]);
i != e; ++i)
- if (DefaultMappings[i].DiagID == DiagID)
- return DefaultMappings[i].Mapping+1;
+ if (StaticDiagInfo[i].DiagID == DiagID)
+ return &StaticDiagInfo[i];
+ return 0;
+}
+
+static unsigned GetDefaultDiagMapping(unsigned DiagID) {
+ if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
+ return Info->Mapping+1;
return diag::MAP_FATAL;
}
@@ -70,7 +77,9 @@
/// enables the specified diagnostic. If there is no -Wfoo flag that controls
/// the diagnostic, this returns null.
const char *Diagnostic::getWarningOptionForDiag(unsigned DiagID) {
- return 0; //"Wfoo";
+ if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
+ return Info->OptionGroup;
+ return 0;
}