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llvm-project/llvm/utils/TableGen/DirectiveEmitter.cpp

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//===- DirectiveEmitter.cpp - Directive Language Emitter ------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// DirectiveEmitter uses the descriptions of directives and clauses to construct
// common code declarations to be used in Frontends.
//
//===----------------------------------------------------------------------===//
#include "llvm/TableGen/DirectiveEmitter.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
using namespace llvm;
namespace {
// Simple RAII helper for defining ifdef-undef-endif scopes.
class IfDefScope {
public:
IfDefScope(StringRef Name, raw_ostream &OS) : Name(Name), OS(OS) {
OS << "#ifdef " << Name << "\n"
<< "#undef " << Name << "\n";
}
~IfDefScope() { OS << "\n#endif // " << Name << "\n\n"; }
private:
StringRef Name;
raw_ostream &OS;
};
} // end anonymous namespace
namespace llvm {
// Generate enum class
void GenerateEnumClass(const std::vector<Record *> &Records, raw_ostream &OS,
StringRef Enum, StringRef Prefix,
const DirectiveLanguage &DirLang) {
OS << "\n";
OS << "enum class " << Enum << " {\n";
for (const auto &R : Records) {
BaseRecord Rec{R};
OS << " " << Prefix << Rec.getFormattedName() << ",\n";
}
OS << "};\n";
OS << "\n";
OS << "static constexpr std::size_t " << Enum
<< "_enumSize = " << Records.size() << ";\n";
// Make the enum values available in the defined namespace. This allows us to
// write something like Enum_X if we have a `using namespace <CppNamespace>`.
// At the same time we do not loose the strong type guarantees of the enum
// class, that is we cannot pass an unsigned as Directive without an explicit
// cast.
if (DirLang.hasMakeEnumAvailableInNamespace()) {
OS << "\n";
for (const auto &R : Records) {
BaseRecord Rec{R};
OS << "constexpr auto " << Prefix << Rec.getFormattedName() << " = "
<< "llvm::" << DirLang.getCppNamespace() << "::" << Enum
<< "::" << Prefix << Rec.getFormattedName() << ";\n";
}
}
}
// Generate enums for values that clauses can take.
// Also generate function declarations for get<Enum>Name(StringRef Str).
void GenerateEnumClauseVal(const std::vector<Record *> &Records,
raw_ostream &OS, const DirectiveLanguage &DirLang,
std::string &EnumHelperFuncs) {
for (const auto &R : Records) {
Clause C{R};
const auto &ClauseVals = C.getClauseVals();
if (ClauseVals.size() <= 0)
continue;
const auto &EnumName = C.getEnumName();
if (EnumName.size() == 0) {
PrintError("enumClauseValue field not set in Clause" +
C.getFormattedName() + ".");
return;
}
OS << "\n";
OS << "enum class " << EnumName << " {\n";
for (const auto &CV : ClauseVals) {
ClauseVal CVal{CV};
OS << " " << CV->getName() << "=" << CVal.getValue() << ",\n";
}
OS << "};\n";
if (DirLang.hasMakeEnumAvailableInNamespace()) {
OS << "\n";
for (const auto &CV : ClauseVals) {
OS << "constexpr auto " << CV->getName() << " = "
<< "llvm::" << DirLang.getCppNamespace() << "::" << EnumName
<< "::" << CV->getName() << ";\n";
}
EnumHelperFuncs += (llvm::Twine(EnumName) + llvm::Twine(" get") +
llvm::Twine(EnumName) + llvm::Twine("(StringRef);\n"))
.str();
EnumHelperFuncs +=
(llvm::Twine("llvm::StringRef get") + llvm::Twine(DirLang.getName()) +
llvm::Twine(EnumName) + llvm::Twine("Name(") +
llvm::Twine(EnumName) + llvm::Twine(");\n"))
.str();
}
}
}
bool HasDuplicateClauses(const std::vector<Record *> &Clauses,
const Directive &Directive,
llvm::StringSet<> &CrtClauses) {
bool HasError = false;
for (const auto &C : Clauses) {
VersionedClause VerClause{C};
const auto insRes = CrtClauses.insert(VerClause.getClause().getName());
if (!insRes.second) {
PrintError("Clause " + VerClause.getClause().getRecordName() +
" already defined on directive " + Directive.getRecordName());
HasError = true;
}
}
return HasError;
}
// Check for duplicate clauses in lists. Clauses cannot appear twice in the
// three allowed list. Also, since required implies allowed, clauses cannot
// appear in both the allowedClauses and requiredClauses lists.
bool HasDuplicateClausesInDirectives(const std::vector<Record *> &Directives) {
bool HasDuplicate = false;
for (const auto &D : Directives) {
Directive Dir{D};
llvm::StringSet<> Clauses;
// Check for duplicates in the three allowed lists.
if (HasDuplicateClauses(Dir.getAllowedClauses(), Dir, Clauses) ||
HasDuplicateClauses(Dir.getAllowedOnceClauses(), Dir, Clauses) ||
HasDuplicateClauses(Dir.getAllowedExclusiveClauses(), Dir, Clauses)) {
HasDuplicate = true;
}
// Check for duplicate between allowedClauses and required
Clauses.clear();
if (HasDuplicateClauses(Dir.getAllowedClauses(), Dir, Clauses) ||
HasDuplicateClauses(Dir.getRequiredClauses(), Dir, Clauses)) {
HasDuplicate = true;
}
if (HasDuplicate)
PrintFatalError("One or more clauses are defined multiple times on"
" directive " +
Dir.getRecordName());
}
return HasDuplicate;
}
// Check consitency of records. Return true if an error has been detected.
// Return false if the records are valid.
bool DirectiveLanguage::HasValidityErrors() const {
if (getDirectiveLanguages().size() != 1) {
PrintFatalError("A single definition of DirectiveLanguage is needed.");
return true;
}
return HasDuplicateClausesInDirectives(getDirectives());
}
// Generate the declaration section for the enumeration in the directive
// language
void EmitDirectivesDecl(RecordKeeper &Records, raw_ostream &OS) {
const auto DirLang = DirectiveLanguage{Records};
if (DirLang.HasValidityErrors())
return;
OS << "#ifndef LLVM_" << DirLang.getName() << "_INC\n";
OS << "#define LLVM_" << DirLang.getName() << "_INC\n";
if (DirLang.hasEnableBitmaskEnumInNamespace())
OS << "\n#include \"llvm/ADT/BitmaskEnum.h\"\n";
OS << "\n";
OS << "namespace llvm {\n";
OS << "class StringRef;\n";
// Open namespaces defined in the directive language
llvm::SmallVector<StringRef, 2> Namespaces;
llvm::SplitString(DirLang.getCppNamespace(), Namespaces, "::");
for (auto Ns : Namespaces)
OS << "namespace " << Ns << " {\n";
if (DirLang.hasEnableBitmaskEnumInNamespace())
OS << "\nLLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();\n";
// Emit Directive enumeration
GenerateEnumClass(DirLang.getDirectives(), OS, "Directive",
DirLang.getDirectivePrefix(), DirLang);
// Emit Clause enumeration
GenerateEnumClass(DirLang.getClauses(), OS, "Clause",
DirLang.getClausePrefix(), DirLang);
// Emit ClauseVal enumeration
std::string EnumHelperFuncs;
GenerateEnumClauseVal(DirLang.getClauses(), OS, DirLang, EnumHelperFuncs);
// Generic function signatures
OS << "\n";
OS << "// Enumeration helper functions\n";
OS << "Directive get" << DirLang.getName()
<< "DirectiveKind(llvm::StringRef Str);\n";
OS << "\n";
OS << "llvm::StringRef get" << DirLang.getName()
<< "DirectiveName(Directive D);\n";
OS << "\n";
OS << "Clause get" << DirLang.getName()
<< "ClauseKind(llvm::StringRef Str);\n";
OS << "\n";
OS << "llvm::StringRef get" << DirLang.getName() << "ClauseName(Clause C);\n";
OS << "\n";
OS << "/// Return true if \\p C is a valid clause for \\p D in version \\p "
<< "Version.\n";
OS << "bool isAllowedClauseForDirective(Directive D, "
<< "Clause C, unsigned Version);\n";
OS << "\n";
if (EnumHelperFuncs.length() > 0) {
OS << EnumHelperFuncs;
OS << "\n";
}
// Closing namespaces
for (auto Ns : llvm::reverse(Namespaces))
OS << "} // namespace " << Ns << "\n";
OS << "} // namespace llvm\n";
OS << "#endif // LLVM_" << DirLang.getName() << "_INC\n";
}
// Generate function implementation for get<Enum>Name(StringRef Str)
void GenerateGetName(const std::vector<Record *> &Records, raw_ostream &OS,
StringRef Enum, const DirectiveLanguage &DirLang,
StringRef Prefix) {
OS << "\n";
OS << "llvm::StringRef llvm::" << DirLang.getCppNamespace() << "::get"
<< DirLang.getName() << Enum << "Name(" << Enum << " Kind) {\n";
OS << " switch (Kind) {\n";
for (const auto &R : Records) {
BaseRecord Rec{R};
OS << " case " << Prefix << Rec.getFormattedName() << ":\n";
OS << " return \"";
if (Rec.getAlternativeName().empty())
OS << Rec.getName();
else
OS << Rec.getAlternativeName();
OS << "\";\n";
}
OS << " }\n"; // switch
OS << " llvm_unreachable(\"Invalid " << DirLang.getName() << " " << Enum
<< " kind\");\n";
OS << "}\n";
}
// Generate function implementation for get<Enum>Kind(StringRef Str)
void GenerateGetKind(const std::vector<Record *> &Records, raw_ostream &OS,
StringRef Enum, const DirectiveLanguage &DirLang,
StringRef Prefix, bool ImplicitAsUnknown) {
auto DefaultIt = llvm::find_if(
Records, [](Record *R) { return R->getValueAsBit("isDefault") == true; });
if (DefaultIt == Records.end()) {
PrintError("At least one " + Enum + " must be defined as default.");
return;
}
BaseRecord DefaultRec{(*DefaultIt)};
OS << "\n";
OS << Enum << " llvm::" << DirLang.getCppNamespace() << "::get"
<< DirLang.getName() << Enum << "Kind(llvm::StringRef Str) {\n";
OS << " return llvm::StringSwitch<" << Enum << ">(Str)\n";
for (const auto &R : Records) {
BaseRecord Rec{R};
if (ImplicitAsUnknown && R->getValueAsBit("isImplicit")) {
OS << " .Case(\"" << Rec.getName() << "\"," << Prefix
<< DefaultRec.getFormattedName() << ")\n";
} else {
OS << " .Case(\"" << Rec.getName() << "\"," << Prefix
<< Rec.getFormattedName() << ")\n";
}
}
OS << " .Default(" << Prefix << DefaultRec.getFormattedName() << ");\n";
OS << "}\n";
}
// Generate function implementation for get<ClauseVal>Kind(StringRef Str)
void GenerateGetKindClauseVal(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
for (const auto &R : DirLang.getClauses()) {
Clause C{R};
const auto &ClauseVals = C.getClauseVals();
if (ClauseVals.size() <= 0)
continue;
auto DefaultIt = llvm::find_if(ClauseVals, [](Record *CV) {
return CV->getValueAsBit("isDefault") == true;
});
if (DefaultIt == ClauseVals.end()) {
PrintError("At least one val in Clause " + C.getFormattedName() +
" must be defined as default.");
return;
}
const auto DefaultName = (*DefaultIt)->getName();
const auto &EnumName = C.getEnumName();
if (EnumName.size() == 0) {
PrintError("enumClauseValue field not set in Clause" +
C.getFormattedName() + ".");
return;
}
OS << "\n";
OS << EnumName << " llvm::" << DirLang.getCppNamespace() << "::get"
<< EnumName << "(llvm::StringRef Str) {\n";
OS << " return llvm::StringSwitch<" << EnumName << ">(Str)\n";
for (const auto &CV : ClauseVals) {
ClauseVal CVal{CV};
OS << " .Case(\"" << CVal.getFormattedName() << "\"," << CV->getName()
<< ")\n";
}
OS << " .Default(" << DefaultName << ");\n";
OS << "}\n";
OS << "\n";
OS << "llvm::StringRef llvm::" << DirLang.getCppNamespace() << "::get"
<< DirLang.getName() << EnumName
<< "Name(llvm::" << DirLang.getCppNamespace() << "::" << EnumName
<< " x) {\n";
OS << " switch (x) {\n";
for (const auto &CV : ClauseVals) {
ClauseVal CVal{CV};
OS << " case " << CV->getName() << ":\n";
OS << " return \"" << CVal.getFormattedName() << "\";\n";
}
OS << " }\n"; // switch
OS << " llvm_unreachable(\"Invalid " << DirLang.getName() << " "
<< EnumName << " kind\");\n";
OS << "}\n";
}
}
void GenerateCaseForVersionedClauses(const std::vector<Record *> &Clauses,
raw_ostream &OS, StringRef DirectiveName,
const DirectiveLanguage &DirLang,
llvm::StringSet<> &Cases) {
for (const auto &C : Clauses) {
VersionedClause VerClause{C};
const auto ClauseFormattedName = VerClause.getClause().getFormattedName();
if (Cases.find(ClauseFormattedName) == Cases.end()) {
Cases.insert(ClauseFormattedName);
OS << " case " << DirLang.getClausePrefix() << ClauseFormattedName
<< ":\n";
OS << " return " << VerClause.getMinVersion()
<< " <= Version && " << VerClause.getMaxVersion() << " >= Version;\n";
}
}
}
// Generate the isAllowedClauseForDirective function implementation.
void GenerateIsAllowedClause(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
OS << "\n";
OS << "bool llvm::" << DirLang.getCppNamespace()
<< "::isAllowedClauseForDirective("
<< "Directive D, Clause C, unsigned Version) {\n";
OS << " assert(unsigned(D) <= llvm::" << DirLang.getCppNamespace()
<< "::Directive_enumSize);\n";
OS << " assert(unsigned(C) <= llvm::" << DirLang.getCppNamespace()
<< "::Clause_enumSize);\n";
OS << " switch (D) {\n";
for (const auto &D : DirLang.getDirectives()) {
Directive Dir{D};
OS << " case " << DirLang.getDirectivePrefix() << Dir.getFormattedName()
<< ":\n";
if (Dir.getAllowedClauses().size() == 0 &&
Dir.getAllowedOnceClauses().size() == 0 &&
Dir.getAllowedExclusiveClauses().size() == 0 &&
Dir.getRequiredClauses().size() == 0) {
OS << " return false;\n";
} else {
OS << " switch (C) {\n";
llvm::StringSet<> Cases;
GenerateCaseForVersionedClauses(Dir.getAllowedClauses(), OS,
Dir.getName(), DirLang, Cases);
GenerateCaseForVersionedClauses(Dir.getAllowedOnceClauses(), OS,
Dir.getName(), DirLang, Cases);
GenerateCaseForVersionedClauses(Dir.getAllowedExclusiveClauses(), OS,
Dir.getName(), DirLang, Cases);
GenerateCaseForVersionedClauses(Dir.getRequiredClauses(), OS,
Dir.getName(), DirLang, Cases);
OS << " default:\n";
OS << " return false;\n";
OS << " }\n"; // End of clauses switch
}
OS << " break;\n";
}
OS << " }\n"; // End of directives switch
OS << " llvm_unreachable(\"Invalid " << DirLang.getName()
<< " Directive kind\");\n";
OS << "}\n"; // End of function isAllowedClauseForDirective
}
// Generate a simple enum set with the give clauses.
void GenerateClauseSet(const std::vector<Record *> &Clauses, raw_ostream &OS,
StringRef ClauseSetPrefix, Directive &Dir,
const DirectiveLanguage &DirLang) {
OS << "\n";
OS << " static " << DirLang.getClauseEnumSetClass() << " " << ClauseSetPrefix
<< DirLang.getDirectivePrefix() << Dir.getFormattedName() << " {\n";
for (const auto &C : Clauses) {
VersionedClause VerClause{C};
OS << " llvm::" << DirLang.getCppNamespace()
<< "::Clause::" << DirLang.getClausePrefix()
<< VerClause.getClause().getFormattedName() << ",\n";
}
OS << " };\n";
}
// Generate an enum set for the 4 kinds of clauses linked to a directive.
void GenerateDirectiveClauseSets(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_DIRECTIVE_CLAUSE_SETS", OS);
OS << "\n";
OS << "namespace llvm {\n";
// Open namespaces defined in the directive language.
llvm::SmallVector<StringRef, 2> Namespaces;
llvm::SplitString(DirLang.getCppNamespace(), Namespaces, "::");
for (auto Ns : Namespaces)
OS << "namespace " << Ns << " {\n";
for (const auto &D : DirLang.getDirectives()) {
Directive Dir{D};
OS << "\n";
OS << " // Sets for " << Dir.getName() << "\n";
GenerateClauseSet(Dir.getAllowedClauses(), OS, "allowedClauses_", Dir,
DirLang);
GenerateClauseSet(Dir.getAllowedOnceClauses(), OS, "allowedOnceClauses_",
Dir, DirLang);
GenerateClauseSet(Dir.getAllowedExclusiveClauses(), OS,
"allowedExclusiveClauses_", Dir, DirLang);
GenerateClauseSet(Dir.getRequiredClauses(), OS, "requiredClauses_", Dir,
DirLang);
}
// Closing namespaces
for (auto Ns : llvm::reverse(Namespaces))
OS << "} // namespace " << Ns << "\n";
OS << "} // namespace llvm\n";
}
// Generate a map of directive (key) with DirectiveClauses struct as values.
// The struct holds the 4 sets of enumeration for the 4 kinds of clauses
// allowances (allowed, allowed once, allowed exclusive and required).
void GenerateDirectiveClauseMap(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_DIRECTIVE_CLAUSE_MAP", OS);
OS << "\n";
OS << "{\n";
for (const auto &D : DirLang.getDirectives()) {
Directive Dir{D};
OS << " {llvm::" << DirLang.getCppNamespace()
<< "::Directive::" << DirLang.getDirectivePrefix()
<< Dir.getFormattedName() << ",\n";
OS << " {\n";
OS << " llvm::" << DirLang.getCppNamespace() << "::allowedClauses_"
<< DirLang.getDirectivePrefix() << Dir.getFormattedName() << ",\n";
OS << " llvm::" << DirLang.getCppNamespace() << "::allowedOnceClauses_"
<< DirLang.getDirectivePrefix() << Dir.getFormattedName() << ",\n";
OS << " llvm::" << DirLang.getCppNamespace()
<< "::allowedExclusiveClauses_" << DirLang.getDirectivePrefix()
<< Dir.getFormattedName() << ",\n";
OS << " llvm::" << DirLang.getCppNamespace() << "::requiredClauses_"
<< DirLang.getDirectivePrefix() << Dir.getFormattedName() << ",\n";
OS << " }\n";
OS << " },\n";
}
OS << "}\n";
}
// Generate classes entry for Flang clauses in the Flang parse-tree
// If the clause as a non-generic class, no entry is generated.
// If the clause does not hold a value, an EMPTY_CLASS is used.
// If the clause class is generic then a WRAPPER_CLASS is used. When the value
// is optional, the value class is wrapped into a std::optional.
void GenerateFlangClauseParserClass(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_CLAUSE_PARSER_CLASSES", OS);
OS << "\n";
for (const auto &C : DirLang.getClauses()) {
Clause Clause{C};
if (!Clause.getFlangClass().empty()) {
OS << "WRAPPER_CLASS(" << Clause.getFormattedParserClassName() << ", ";
if (Clause.isValueOptional() && Clause.isValueList()) {
OS << "std::optional<std::list<" << Clause.getFlangClass() << ">>";
} else if (Clause.isValueOptional()) {
OS << "std::optional<" << Clause.getFlangClass() << ">";
} else if (Clause.isValueList()) {
OS << "std::list<" << Clause.getFlangClass() << ">";
} else {
OS << Clause.getFlangClass();
}
} else {
OS << "EMPTY_CLASS(" << Clause.getFormattedParserClassName();
}
OS << ");\n";
}
}
// Generate a list of the different clause classes for Flang.
void GenerateFlangClauseParserClassList(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_CLAUSE_PARSER_CLASSES_LIST", OS);
OS << "\n";
llvm::interleaveComma(DirLang.getClauses(), OS, [&](Record *C) {
Clause Clause{C};
OS << Clause.getFormattedParserClassName() << "\n";
});
}
// Generate dump node list for the clauses holding a generic class name.
void GenerateFlangClauseDump(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_DUMP_PARSE_TREE_CLAUSES", OS);
OS << "\n";
for (const auto &C : DirLang.getClauses()) {
Clause Clause{C};
OS << "NODE(" << DirLang.getFlangClauseBaseClass() << ", "
<< Clause.getFormattedParserClassName() << ")\n";
}
}
// Generate Unparse functions for clauses classes in the Flang parse-tree
// If the clause is a non-generic class, no entry is generated.
void GenerateFlangClauseUnparse(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_CLAUSE_UNPARSE", OS);
OS << "\n";
for (const auto &C : DirLang.getClauses()) {
Clause Clause{C};
if (!Clause.getFlangClass().empty()) {
if (Clause.isValueOptional() && Clause.getDefaultValue().empty()) {
OS << "void Unparse(const " << DirLang.getFlangClauseBaseClass()
<< "::" << Clause.getFormattedParserClassName() << " &x) {\n";
OS << " Word(\"" << Clause.getName().upper() << "\");\n";
OS << " Walk(\"(\", x.v, \")\");\n";
OS << "}\n";
} else if (Clause.isValueOptional()) {
OS << "void Unparse(const " << DirLang.getFlangClauseBaseClass()
<< "::" << Clause.getFormattedParserClassName() << " &x) {\n";
OS << " Word(\"" << Clause.getName().upper() << "\");\n";
OS << " Put(\"(\");\n";
OS << " if (x.v.has_value())\n";
if (Clause.isValueList())
OS << " Walk(x.v, \",\");\n";
else
OS << " Walk(x.v);\n";
OS << " else\n";
OS << " Put(\"" << Clause.getDefaultValue() << "\");\n";
OS << " Put(\")\");\n";
OS << "}\n";
} else {
OS << "void Unparse(const " << DirLang.getFlangClauseBaseClass()
<< "::" << Clause.getFormattedParserClassName() << " &x) {\n";
OS << " Word(\"" << Clause.getName().upper() << "\");\n";
OS << " Put(\"(\");\n";
if (Clause.isValueList())
OS << " Walk(x.v, \",\");\n";
else
OS << " Walk(x.v);\n";
OS << " Put(\")\");\n";
OS << "}\n";
}
} else {
OS << "void Before(const " << DirLang.getFlangClauseBaseClass()
<< "::" << Clause.getFormattedParserClassName() << " &) { Word(\""
<< Clause.getName().upper() << "\"); }\n";
}
}
}
// Generate check in the Enter functions for clauses classes.
void GenerateFlangClauseCheckPrototypes(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_CLAUSE_CHECK_ENTER", OS);
OS << "\n";
for (const auto &C : DirLang.getClauses()) {
Clause Clause{C};
OS << "void Enter(const parser::" << DirLang.getFlangClauseBaseClass()
<< "::" << Clause.getFormattedParserClassName() << " &);\n";
}
}
// Generate the mapping for clauses between the parser class and the
// corresponding clause Kind
void GenerateFlangClauseParserKindMap(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_FLANG_CLAUSE_PARSER_KIND_MAP", OS);
OS << "\n";
for (const auto &C : DirLang.getClauses()) {
Clause Clause{C};
OS << "if constexpr (std::is_same_v<A, parser::"
<< DirLang.getFlangClauseBaseClass()
<< "::" << Clause.getFormattedParserClassName();
OS << ">)\n";
OS << " return llvm::" << DirLang.getCppNamespace()
<< "::Clause::" << DirLang.getClausePrefix() << Clause.getFormattedName()
<< ";\n";
}
OS << "llvm_unreachable(\"Invalid " << DirLang.getName()
<< " Parser clause\");\n";
}
// Generate the implementation section for the enumeration in the directive
// language
void EmitDirectivesFlangImpl(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
GenerateDirectiveClauseSets(DirLang, OS);
GenerateDirectiveClauseMap(DirLang, OS);
GenerateFlangClauseParserClass(DirLang, OS);
GenerateFlangClauseParserClassList(DirLang, OS);
GenerateFlangClauseDump(DirLang, OS);
GenerateFlangClauseUnparse(DirLang, OS);
GenerateFlangClauseCheckPrototypes(DirLang, OS);
GenerateFlangClauseParserKindMap(DirLang, OS);
}
void GenerateClauseClassMacro(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
// Generate macros style information for legacy code in clang
IfDefScope Scope("GEN_CLANG_CLAUSE_CLASS", OS);
OS << "\n";
OS << "#ifndef CLAUSE\n";
OS << "#define CLAUSE(Enum, Str, Implicit)\n";
OS << "#endif\n";
OS << "#ifndef CLAUSE_CLASS\n";
OS << "#define CLAUSE_CLASS(Enum, Str, Class)\n";
OS << "#endif\n";
OS << "#ifndef CLAUSE_NO_CLASS\n";
OS << "#define CLAUSE_NO_CLASS(Enum, Str)\n";
OS << "#endif\n";
OS << "\n";
OS << "#define __CLAUSE(Name, Class) \\\n";
OS << " CLAUSE(" << DirLang.getClausePrefix()
<< "##Name, #Name, /* Implicit */ false) \\\n";
OS << " CLAUSE_CLASS(" << DirLang.getClausePrefix()
<< "##Name, #Name, Class)\n";
OS << "#define __CLAUSE_NO_CLASS(Name) \\\n";
OS << " CLAUSE(" << DirLang.getClausePrefix()
<< "##Name, #Name, /* Implicit */ false) \\\n";
OS << " CLAUSE_NO_CLASS(" << DirLang.getClausePrefix() << "##Name, #Name)\n";
OS << "#define __IMPLICIT_CLAUSE_CLASS(Name, Str, Class) \\\n";
OS << " CLAUSE(" << DirLang.getClausePrefix()
<< "##Name, Str, /* Implicit */ true) \\\n";
OS << " CLAUSE_CLASS(" << DirLang.getClausePrefix()
<< "##Name, Str, Class)\n";
OS << "#define __IMPLICIT_CLAUSE_NO_CLASS(Name, Str) \\\n";
OS << " CLAUSE(" << DirLang.getClausePrefix()
<< "##Name, Str, /* Implicit */ true) \\\n";
OS << " CLAUSE_NO_CLASS(" << DirLang.getClausePrefix() << "##Name, Str)\n";
OS << "\n";
for (const auto &R : DirLang.getClauses()) {
Clause C{R};
if (C.getClangClass().empty()) { // NO_CLASS
if (C.isImplicit()) {
OS << "__IMPLICIT_CLAUSE_NO_CLASS(" << C.getFormattedName() << ", \""
<< C.getFormattedName() << "\")\n";
} else {
OS << "__CLAUSE_NO_CLASS(" << C.getFormattedName() << ")\n";
}
} else { // CLASS
if (C.isImplicit()) {
OS << "__IMPLICIT_CLAUSE_CLASS(" << C.getFormattedName() << ", \""
<< C.getFormattedName() << "\", " << C.getClangClass() << ")\n";
} else {
OS << "__CLAUSE(" << C.getFormattedName() << ", " << C.getClangClass()
<< ")\n";
}
}
}
OS << "\n";
OS << "#undef __IMPLICIT_CLAUSE_NO_CLASS\n";
OS << "#undef __IMPLICIT_CLAUSE_CLASS\n";
OS << "#undef __CLAUSE\n";
OS << "#undef CLAUSE_NO_CLASS\n";
OS << "#undef CLAUSE_CLASS\n";
OS << "#undef CLAUSE\n";
}
// Generate the implemenation for the enumeration in the directive
// language. This code can be included in library.
void EmitDirectivesBasicImpl(const DirectiveLanguage &DirLang,
raw_ostream &OS) {
IfDefScope Scope("GEN_DIRECTIVES_IMPL", OS);
// getDirectiveKind(StringRef Str)
GenerateGetKind(DirLang.getDirectives(), OS, "Directive", DirLang,
DirLang.getDirectivePrefix(), /*ImplicitAsUnknown=*/false);
// getDirectiveName(Directive Kind)
GenerateGetName(DirLang.getDirectives(), OS, "Directive", DirLang,
DirLang.getDirectivePrefix());
// getClauseKind(StringRef Str)
GenerateGetKind(DirLang.getClauses(), OS, "Clause", DirLang,
DirLang.getClausePrefix(),
/*ImplicitAsUnknown=*/true);
// getClauseName(Clause Kind)
GenerateGetName(DirLang.getClauses(), OS, "Clause", DirLang,
DirLang.getClausePrefix());
// get<ClauseVal>Kind(StringRef Str)
GenerateGetKindClauseVal(DirLang, OS);
// isAllowedClauseForDirective(Directive D, Clause C, unsigned Version)
GenerateIsAllowedClause(DirLang, OS);
}
// Generate the implemenation section for the enumeration in the directive
// language.
void EmitDirectivesImpl(RecordKeeper &Records, raw_ostream &OS) {
const auto DirLang = DirectiveLanguage{Records};
if (DirLang.HasValidityErrors())
return;
EmitDirectivesFlangImpl(DirLang, OS);
GenerateClauseClassMacro(DirLang, OS);
EmitDirectivesBasicImpl(DirLang, OS);
}
} // namespace llvm
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