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Support: Add dwarf::getLanguage()

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llvm-svn: 228458
This commit is contained in:
Duncan P. N. Exon Smith 2015-02-06 22:55:13 +00:00
parent b69d0ef5cb
commit b2bb076de9
3 changed files with 33 additions and 1 deletions
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10
include/llvm/Support/Dwarf.h
View File

@ -755,8 +755,16 @@ const char *GDBIndexEntryKindString(GDBIndexEntryKind Kind);
const char *GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage);
/// @}
/// \brief Get the tag number associated with a tag string.
/// \defgroup DwarfConstantsParsing Dwarf constants parsing functions
///
/// These functions map their strings back to the corresponding enumeration
/// value or return 0 if there is none. As an exception, \a getTag() returns
/// \a DW_TAG_invalid on invalid input.
///
/// @{
unsigned getTag(StringRef TagString);
unsigned getLanguage(StringRef LanguageString);
/// @}
/// \brief Returns the symbolic string representing Val when used as a value
/// for attribute Attr.

7
lib/Support/Dwarf.cpp
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@ -489,6 +489,13 @@ const char *llvm::dwarf::LanguageString(unsigned Language) {
}
}
unsigned llvm::dwarf::getLanguage(StringRef LanguageString) {
return StringSwitch<unsigned>(LanguageString)
#define HANDLE_DW_LANG(ID, NAME) .Case("DW_LANG_" #NAME, DW_LANG_##NAME)
#include "llvm/Support/Dwarf.def"
.Default(0);
}
const char *llvm::dwarf::CaseString(unsigned Case) {
switch (Case) {
case DW_ID_case_sensitive: return "DW_ID_case_sensitive";

17
unittests/Support/DwarfTest.cpp
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@ -52,4 +52,21 @@ TEST(DwarfTest, LanguageStringOnInvalid) {
EXPECT_EQ(nullptr, LanguageString(DW_LANG_hi_user));
}
TEST(DwarfTest, getLanguage) {
// A couple of valid languages.
EXPECT_EQ(DW_LANG_C89, getLanguage("DW_LANG_C89"));
EXPECT_EQ(DW_LANG_C_plus_plus_11, getLanguage("DW_LANG_C_plus_plus_11"));
EXPECT_EQ(DW_LANG_OCaml, getLanguage("DW_LANG_OCaml"));
EXPECT_EQ(DW_LANG_Mips_Assembler, getLanguage("DW_LANG_Mips_Assembler"));
// Invalid languages.
EXPECT_EQ(0u, getLanguage("DW_LANG_invalid"));
EXPECT_EQ(0u, getLanguage("DW_TAG_array_type"));
EXPECT_EQ(0u, getLanguage("something else"));
// Language range markers should not be recognized.
EXPECT_EQ(0u, getLanguage("DW_LANG_lo_user"));
EXPECT_EQ(0u, getLanguage("DW_LANG_hi_user"));
}
} // end namespace