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Replace parallel arrays with a StringSwitch. 

llvm-svn: 276163
This commit is contained in:
Rui Ueyama 2016-07-20 19:36:38 +00:00
parent 047404f711
commit b0f6c59023
1 changed files with 18 additions and 15 deletions
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33
lld/ELF/LinkerScript.cpp
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@ -783,23 +783,26 @@ std::vector<StringRef> ScriptParser::readOutputSectionPhdrs() {
}
unsigned ScriptParser::readPhdrType() {
static const char *typeNames[] = {
"PT_NULL", "PT_LOAD", "PT_DYNAMIC", "PT_INTERP",
"PT_NOTE", "PT_SHLIB", "PT_PHDR", "PT_TLS",
"PT_GNU_EH_FRAME", "PT_GNU_STACK", "PT_GNU_RELRO"};
static unsigned typeCodes[] = {
PT_NULL, PT_LOAD, PT_DYNAMIC, PT_INTERP, PT_NOTE, PT_SHLIB,
PT_PHDR, PT_TLS, PT_GNU_EH_FRAME, PT_GNU_STACK, PT_GNU_RELRO};
unsigned PhdrType = PT_NULL;
StringRef Tok = next();
auto It = std::find(std::begin(typeNames), std::end(typeNames), Tok);
if (It != std::end(typeNames))
PhdrType = typeCodes[std::distance(std::begin(typeNames), It)];
else
setError("invalid program header type");
unsigned Ret = StringSwitch<unsigned>(Tok)
.Case("PT_NULL", PT_NULL)
.Case("PT_LOAD", PT_LOAD)
.Case("PT_DYNAMIC", PT_DYNAMIC)
.Case("PT_INTERP", PT_INTERP)
.Case("PT_NOTE", PT_NOTE)
.Case("PT_SHLIB", PT_SHLIB)
.Case("PT_PHDR", PT_PHDR)
.Case("PT_TLS", PT_TLS)
.Case("PT_GNU_EH_FRAME", PT_GNU_EH_FRAME)
.Case("PT_GNU_STACK", PT_GNU_STACK)
.Case("PT_GNU_RELRO", PT_GNU_RELRO)
.Default(-1);
return PhdrType;
if (Ret == (unsigned)-1) {
setError("invalid program header type: " + Tok);
return PT_NULL;
}
return Ret;
}
static bool isUnderSysroot(StringRef Path) {