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//===- RegistryManager.cpp - Matcher registry -----------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Registry map populated at static initialization time.
//
//===----------------------------------------------------------------------===//
#include "RegistryManager.h"
#include "mlir/Query/Matcher/Registry.h"
#include <set>
#include <utility>
namespace mlir::query::matcher {
namespace {
// Enum to string for autocomplete.
static std::string asArgString(ArgKind kind) {
switch (kind) {
case ArgKind::Boolean:
return "Boolean";
case ArgKind::Matcher:
return "Matcher";
case ArgKind::Signed:
return "Signed";
case ArgKind::String:
return "String";
}
llvm_unreachable("Unhandled ArgKind");
}
} // namespace
void Registry::registerMatcherDescriptor(
llvm::StringRef matcherName,
std::unique_ptr<internal::MatcherDescriptor> callback) {
assert(!constructorMap.contains(matcherName));
constructorMap[matcherName] = std::move(callback);
}
std::optional<MatcherCtor>
RegistryManager::lookupMatcherCtor(llvm::StringRef matcherName,
const Registry &matcherRegistry) {
auto it = matcherRegistry.constructors().find(matcherName);
return it == matcherRegistry.constructors().end()
? std::optional<MatcherCtor>()
: it->second.get();
}
std::vector<ArgKind> RegistryManager::getAcceptedCompletionTypes(
llvm::ArrayRef<std::pair<MatcherCtor, unsigned>> context) {
// Starting with the above seed of acceptable top-level matcher types, compute
// the acceptable type set for the argument indicated by each context element.
std::set<ArgKind> typeSet;
typeSet.insert(ArgKind::Matcher);
for (const auto &ctxEntry : context) {
MatcherCtor ctor = ctxEntry.first;
unsigned argNumber = ctxEntry.second;
std::vector<ArgKind> nextTypeSet;
if (ctor->isVariadic() || argNumber < ctor->getNumArgs())
ctor->getArgKinds(argNumber, nextTypeSet);
typeSet.insert(nextTypeSet.begin(), nextTypeSet.end());
}
return std::vector<ArgKind>(typeSet.begin(), typeSet.end());
}
std::vector<MatcherCompletion>
RegistryManager::getMatcherCompletions(llvm::ArrayRef<ArgKind> acceptedTypes,
const Registry &matcherRegistry) {
std::vector<MatcherCompletion> completions;
// Search the registry for acceptable matchers.
for (const auto &m : matcherRegistry.constructors()) {
const internal::MatcherDescriptor &matcher = *m.getValue();
llvm::StringRef name = m.getKey();
unsigned numArgs = matcher.isVariadic() ? 1 : matcher.getNumArgs();
std::vector<std::vector<ArgKind>> argKinds(numArgs);
for (const ArgKind &kind : acceptedTypes) {
if (kind != ArgKind::Matcher)
continue;
for (unsigned arg = 0; arg != numArgs; ++arg)
matcher.getArgKinds(arg, argKinds[arg]);
}
std::string decl;
llvm::raw_string_ostream os(decl);
std::string typedText = std::string(name);
os << "Matcher: " << name << "(";
for (const std::vector<ArgKind> &arg : argKinds) {
if (&arg != &argKinds[0])
os << ", ";
bool firstArgKind = true;
// Two steps. First all non-matchers, then matchers only.
for (const ArgKind &argKind : arg) {
if (!firstArgKind)
os << "|";
firstArgKind = false;
os << asArgString(argKind);
}
}
if (matcher.isVariadic())
os << ",...";
os << ")";
typedText += "(";
if (argKinds.empty())
typedText += ")";
else if (argKinds[0][0] == ArgKind::String)
typedText += "\"";
completions.emplace_back(typedText, decl);
}
return completions;
}
VariantMatcher RegistryManager::constructMatcher(
MatcherCtor ctor, internal::SourceRange nameRange,
llvm::StringRef functionName, llvm::ArrayRef<ParserValue> args,
internal::Diagnostics *error) {
VariantMatcher out = ctor->create(nameRange, args, error);
if (functionName.empty() || out.isNull())
return out;
if (std::optional<DynMatcher> result = out.getDynMatcher()) {
result->setFunctionName(functionName);
return VariantMatcher::SingleMatcher(*result);
}
error->addError(nameRange, internal::ErrorType::RegistryNotBindable);
return {};
}
} // namespace mlir::query::matcher
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