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-rw-r--r--gnu/llvm/utils/TableGen/OptParserEmitter.cpp328
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diff --git a/gnu/llvm/utils/TableGen/OptParserEmitter.cpp b/gnu/llvm/utils/TableGen/OptParserEmitter.cpp
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--- a/gnu/llvm/utils/TableGen/OptParserEmitter.cpp
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-//===- OptParserEmitter.cpp - Table Driven Command Line Parsing -----------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/TableGen/Error.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/TableGen/Record.h"
-#include "llvm/TableGen/TableGenBackend.h"
-#include <cctype>
-#include <cstring>
-#include <map>
-
-using namespace llvm;
-
-// Ordering on Info. The logic should match with the consumer-side function in
-// llvm/Option/OptTable.h.
-// FIXME: Mmake this take StringRefs instead of null terminated strings to
-// simplify callers.
-static int StrCmpOptionName(const char *A, const char *B) {
- const char *X = A, *Y = B;
- char a = tolower(*A), b = tolower(*B);
- while (a == b) {
- if (a == '\0')
- return strcmp(A, B);
-
- a = tolower(*++X);
- b = tolower(*++Y);
- }
-
- if (a == '\0') // A is a prefix of B.
- return 1;
- if (b == '\0') // B is a prefix of A.
- return -1;
-
- // Otherwise lexicographic.
- return (a < b) ? -1 : 1;
-}
-
-static int CompareOptionRecords(Record *const *Av, Record *const *Bv) {
- const Record *A = *Av;
- const Record *B = *Bv;
-
- // Sentinel options precede all others and are only ordered by precedence.
- bool ASent = A->getValueAsDef("Kind")->getValueAsBit("Sentinel");
- bool BSent = B->getValueAsDef("Kind")->getValueAsBit("Sentinel");
- if (ASent != BSent)
- return ASent ? -1 : 1;
-
- // Compare options by name, unless they are sentinels.
- if (!ASent)
- if (int Cmp = StrCmpOptionName(A->getValueAsString("Name").str().c_str(),
- B->getValueAsString("Name").str().c_str()))
- return Cmp;
-
- if (!ASent) {
- std::vector<StringRef> APrefixes = A->getValueAsListOfStrings("Prefixes");
- std::vector<StringRef> BPrefixes = B->getValueAsListOfStrings("Prefixes");
-
- for (std::vector<StringRef>::const_iterator APre = APrefixes.begin(),
- AEPre = APrefixes.end(),
- BPre = BPrefixes.begin(),
- BEPre = BPrefixes.end();
- APre != AEPre &&
- BPre != BEPre;
- ++APre, ++BPre) {
- if (int Cmp = StrCmpOptionName(APre->str().c_str(), BPre->str().c_str()))
- return Cmp;
- }
- }
-
- // Then by the kind precedence;
- int APrec = A->getValueAsDef("Kind")->getValueAsInt("Precedence");
- int BPrec = B->getValueAsDef("Kind")->getValueAsInt("Precedence");
- if (APrec == BPrec &&
- A->getValueAsListOfStrings("Prefixes") ==
- B->getValueAsListOfStrings("Prefixes")) {
- PrintError(A->getLoc(), Twine("Option is equivalent to"));
- PrintError(B->getLoc(), Twine("Other defined here"));
- PrintFatalError("Equivalent Options found.");
- }
- return APrec < BPrec ? -1 : 1;
-}
-
-static const std::string getOptionName(const Record &R) {
- // Use the record name unless EnumName is defined.
- if (isa<UnsetInit>(R.getValueInit("EnumName")))
- return R.getName();
-
- return R.getValueAsString("EnumName");
-}
-
-static raw_ostream &write_cstring(raw_ostream &OS, llvm::StringRef Str) {
- OS << '"';
- OS.write_escaped(Str);
- OS << '"';
- return OS;
-}
-
-/// OptParserEmitter - This tablegen backend takes an input .td file
-/// describing a list of options and emits a data structure for parsing and
-/// working with those options when given an input command line.
-namespace llvm {
-void EmitOptParser(RecordKeeper &Records, raw_ostream &OS) {
- // Get the option groups and options.
- const std::vector<Record*> &Groups =
- Records.getAllDerivedDefinitions("OptionGroup");
- std::vector<Record*> Opts = Records.getAllDerivedDefinitions("Option");
-
- emitSourceFileHeader("Option Parsing Definitions", OS);
-
- array_pod_sort(Opts.begin(), Opts.end(), CompareOptionRecords);
- // Generate prefix groups.
- typedef SmallVector<SmallString<2>, 2> PrefixKeyT;
- typedef std::map<PrefixKeyT, std::string> PrefixesT;
- PrefixesT Prefixes;
- Prefixes.insert(std::make_pair(PrefixKeyT(), "prefix_0"));
- unsigned CurPrefix = 0;
- for (unsigned i = 0, e = Opts.size(); i != e; ++i) {
- const Record &R = *Opts[i];
- std::vector<StringRef> prf = R.getValueAsListOfStrings("Prefixes");
- PrefixKeyT prfkey(prf.begin(), prf.end());
- unsigned NewPrefix = CurPrefix + 1;
- if (Prefixes.insert(std::make_pair(prfkey, (Twine("prefix_") +
- Twine(NewPrefix)).str())).second)
- CurPrefix = NewPrefix;
- }
-
- // Dump prefixes.
-
- OS << "/////////\n";
- OS << "// Prefixes\n\n";
- OS << "#ifdef PREFIX\n";
- OS << "#define COMMA ,\n";
- for (PrefixesT::const_iterator I = Prefixes.begin(), E = Prefixes.end();
- I != E; ++I) {
- OS << "PREFIX(";
-
- // Prefix name.
- OS << I->second;
-
- // Prefix values.
- OS << ", {";
- for (PrefixKeyT::const_iterator PI = I->first.begin(),
- PE = I->first.end(); PI != PE; ++PI) {
- OS << "\"" << *PI << "\" COMMA ";
- }
- OS << "nullptr})\n";
- }
- OS << "#undef COMMA\n";
- OS << "#endif // PREFIX\n\n";
-
- OS << "/////////\n";
- OS << "// Groups\n\n";
- OS << "#ifdef OPTION\n";
- for (unsigned i = 0, e = Groups.size(); i != e; ++i) {
- const Record &R = *Groups[i];
-
- // Start a single option entry.
- OS << "OPTION(";
-
- // The option prefix;
- OS << "nullptr";
-
- // The option string.
- OS << ", \"" << R.getValueAsString("Name") << '"';
-
- // The option identifier name.
- OS << ", "<< getOptionName(R);
-
- // The option kind.
- OS << ", Group";
-
- // The containing option group (if any).
- OS << ", ";
- if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group")))
- OS << getOptionName(*DI->getDef());
- else
- OS << "INVALID";
-
- // The other option arguments (unused for groups).
- OS << ", INVALID, nullptr, 0, 0";
-
- // The option help text.
- if (!isa<UnsetInit>(R.getValueInit("HelpText"))) {
- OS << ",\n";
- OS << " ";
- write_cstring(OS, R.getValueAsString("HelpText"));
- } else
- OS << ", nullptr";
-
- // The option meta-variable name (unused).
- OS << ", nullptr";
-
- // The option Values (unused for groups).
- OS << ", nullptr)\n";
- }
- OS << "\n";
-
- OS << "//////////\n";
- OS << "// Options\n\n";
- for (unsigned i = 0, e = Opts.size(); i != e; ++i) {
- const Record &R = *Opts[i];
-
- // Start a single option entry.
- OS << "OPTION(";
-
- // The option prefix;
- std::vector<StringRef> prf = R.getValueAsListOfStrings("Prefixes");
- OS << Prefixes[PrefixKeyT(prf.begin(), prf.end())] << ", ";
-
- // The option string.
- write_cstring(OS, R.getValueAsString("Name"));
-
- // The option identifier name.
- OS << ", "<< getOptionName(R);
-
- // The option kind.
- OS << ", " << R.getValueAsDef("Kind")->getValueAsString("Name");
-
- // The containing option group (if any).
- OS << ", ";
- const ListInit *GroupFlags = nullptr;
- if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group"))) {
- GroupFlags = DI->getDef()->getValueAsListInit("Flags");
- OS << getOptionName(*DI->getDef());
- } else
- OS << "INVALID";
-
- // The option alias (if any).
- OS << ", ";
- if (const DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Alias")))
- OS << getOptionName(*DI->getDef());
- else
- OS << "INVALID";
-
- // The option alias arguments (if any).
- // Emitted as a \0 separated list in a string, e.g. ["foo", "bar"]
- // would become "foo\0bar\0". Note that the compiler adds an implicit
- // terminating \0 at the end.
- OS << ", ";
- std::vector<StringRef> AliasArgs = R.getValueAsListOfStrings("AliasArgs");
- if (AliasArgs.size() == 0) {
- OS << "nullptr";
- } else {
- OS << "\"";
- for (size_t i = 0, e = AliasArgs.size(); i != e; ++i)
- OS << AliasArgs[i] << "\\0";
- OS << "\"";
- }
-
- // The option flags.
- OS << ", ";
- int NumFlags = 0;
- const ListInit *LI = R.getValueAsListInit("Flags");
- for (Init *I : *LI)
- OS << (NumFlags++ ? " | " : "")
- << cast<DefInit>(I)->getDef()->getName();
- if (GroupFlags) {
- for (Init *I : *GroupFlags)
- OS << (NumFlags++ ? " | " : "")
- << cast<DefInit>(I)->getDef()->getName();
- }
- if (NumFlags == 0)
- OS << '0';
-
- // The option parameter field.
- OS << ", " << R.getValueAsInt("NumArgs");
-
- // The option help text.
- if (!isa<UnsetInit>(R.getValueInit("HelpText"))) {
- OS << ",\n";
- OS << " ";
- write_cstring(OS, R.getValueAsString("HelpText"));
- } else
- OS << ", nullptr";
-
- // The option meta-variable name.
- OS << ", ";
- if (!isa<UnsetInit>(R.getValueInit("MetaVarName")))
- write_cstring(OS, R.getValueAsString("MetaVarName"));
- else
- OS << "nullptr";
-
- // The option Values. Used for shell autocompletion.
- OS << ", ";
- if (!isa<UnsetInit>(R.getValueInit("Values")))
- write_cstring(OS, R.getValueAsString("Values"));
- else
- OS << "nullptr";
-
- OS << ")\n";
- }
- OS << "#endif // OPTION\n";
-
- OS << "\n";
- OS << "#ifdef OPTTABLE_ARG_INIT\n";
- OS << "//////////\n";
- OS << "// Option Values\n\n";
- for (unsigned I = 0, E = Opts.size(); I != E; ++I) {
- const Record &R = *Opts[I];
- if (isa<UnsetInit>(R.getValueInit("ValuesCode")))
- continue;
- OS << "{\n";
- OS << "bool ValuesWereAdded;\n";
- OS << R.getValueAsString("ValuesCode");
- OS << "\n";
- for (const std::string &Pref : R.getValueAsListOfStrings("Prefixes")) {
- OS << "ValuesWereAdded = Opt.addValues(";
- std::string S = (Pref + R.getValueAsString("Name")).str();
- write_cstring(OS, S);
- OS << ", Values);\n";
- OS << "(void)ValuesWereAdded;\n";
- OS << "assert(ValuesWereAdded && \"Couldn't add values to "
- "OptTable!\");\n";
- }
- OS << "}\n";
- }
- OS << "\n";
- OS << "#endif // OPTTABLE_ARG_INIT\n";
-}
-} // end namespace llvm
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