[llvm] r228031 - Support: Add string => unsigned mapping for DW_TAG
Duncan P. N. Exon Smith
dexonsmith at apple.com
Tue Feb 3 13:16:49 PST 2015
Author: dexonsmith
Date: Tue Feb 3 15:16:49 2015
New Revision: 228031
URL: http://llvm.org/viewvc/llvm-project?rev=228031&view=rev
Log:
Support: Add string => unsigned mapping for DW_TAG
Add `dwarf::getTag()` to translate from `StringRef` to `unsigned`.
Modified:
llvm/trunk/include/llvm/Support/Dwarf.h
llvm/trunk/lib/Support/Dwarf.cpp
llvm/trunk/unittests/Support/DwarfTest.cpp
Modified: llvm/trunk/include/llvm/Support/Dwarf.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/Dwarf.h?rev=228031&r1=228030&r2=228031&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/Dwarf.h (original)
+++ llvm/trunk/include/llvm/Support/Dwarf.h Tue Feb 3 15:16:49 2015
@@ -20,6 +20,7 @@
#ifndef LLVM_SUPPORT_DWARF_H
#define LLVM_SUPPORT_DWARF_H
+#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DataTypes.h"
@@ -783,6 +784,9 @@ const char *GDBIndexEntryKindString(GDBI
const char *GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage);
/// @}
+/// \brief Get the tag number associated with a tag string.
+unsigned getTag(StringRef TagString);
+
/// \brief Returns the symbolic string representing Val when used as a value
/// for attribute Attr.
const char *AttributeValueString(uint16_t Attr, unsigned Val);
Modified: llvm/trunk/lib/Support/Dwarf.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Dwarf.cpp?rev=228031&r1=228030&r2=228031&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Dwarf.cpp (original)
+++ llvm/trunk/lib/Support/Dwarf.cpp Tue Feb 3 15:16:49 2015
@@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Support/Dwarf.h"
+#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
@@ -27,6 +28,13 @@ const char *llvm::dwarf::TagString(unsig
}
}
+unsigned llvm::dwarf::getTag(StringRef TagString) {
+ return StringSwitch<unsigned>(TagString)
+#define HANDLE_DW_TAG(ID, NAME) .Case("DW_TAG_" #NAME, DW_TAG_##NAME)
+#include "llvm/Support/Dwarf.def"
+ .Default(DW_TAG_invalid);
+}
+
const char *llvm::dwarf::ChildrenString(unsigned Children) {
switch (Children) {
case DW_CHILDREN_no: return "DW_CHILDREN_no";
Modified: llvm/trunk/unittests/Support/DwarfTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/Support/DwarfTest.cpp?rev=228031&r1=228030&r2=228031&view=diff
==============================================================================
--- llvm/trunk/unittests/Support/DwarfTest.cpp (original)
+++ llvm/trunk/unittests/Support/DwarfTest.cpp Tue Feb 3 15:16:49 2015
@@ -26,4 +26,20 @@ TEST(DwarfTest, TagStringOnInvalid) {
EXPECT_EQ(nullptr, TagString(DW_TAG_user_base));
}
+TEST(DwarfTest, getTag) {
+ // A couple of valid tags.
+ EXPECT_EQ(DW_TAG_array_type, getTag("DW_TAG_array_type"));
+ EXPECT_EQ(DW_TAG_module, getTag("DW_TAG_module"));
+
+ // Invalid tags.
+ EXPECT_EQ(DW_TAG_invalid, getTag("DW_TAG_invalid"));
+ EXPECT_EQ(DW_TAG_invalid, getTag("DW_TAG_madeuptag"));
+ EXPECT_EQ(DW_TAG_invalid, getTag("something else"));
+
+ // Tag range markers should not be recognized.
+ EXPECT_EQ(DW_TAG_invalid, getTag("DW_TAG_lo_user"));
+ EXPECT_EQ(DW_TAG_invalid, getTag("DW_TAG_hi_user"));
+ EXPECT_EQ(DW_TAG_invalid, getTag("DW_TAG_user_base"));
+}
+
} // end namespace
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