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//===--- Registry.h - Matcher registry -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Registry of all known matchers.
///
/// The registry provides a generic interface to construct any matcher by name.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_MATCHERS_DYNAMIC_REGISTRY_H
#define LLVM_CLANG_AST_MATCHERS_DYNAMIC_REGISTRY_H
#include "clang/ASTMatchers/Dynamic/Diagnostics.h"
#include "clang/ASTMatchers/Dynamic/VariantValue.h"
#include "clang/Basic/LLVM.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
namespace clang {
namespace ast_matchers {
namespace dynamic {
class Registry {
public:
/// \brief Construct a matcher from the registry by name.
///
/// Consult the registry of known matchers and construct the appropriate
/// matcher by name.
///
/// \param MatcherName The name of the matcher to instantiate.
///
/// \param NameRange The location of the name in the matcher source.
/// Useful for error reporting.
///
/// \param Args The argument list for the matcher. The number and types of the
/// values must be valid for the matcher requested. Otherwise, the function
/// will return an error.
///
/// \return The matcher object constructed if no error was found.
/// A null matcher if the matcher is not found, or if the number of
/// arguments or argument types do not match the signature.
/// In that case \c Error will contain the description of the error.
static VariantMatcher constructMatcher(StringRef MatcherName,
const SourceRange &NameRange,
ArrayRef<ParserValue> Args,
Diagnostics *Error);
/// \brief Construct a matcher from the registry and bind it.
///
/// Similar the \c constructMatcher() above, but it then tries to bind the
/// matcher to the specified \c BindID.
/// If the matcher is not bindable, it sets an error in \c Error and returns
/// a null matcher.
static VariantMatcher constructBoundMatcher(StringRef MatcherName,
const SourceRange &NameRange,
StringRef BindID,
ArrayRef<ParserValue> Args,
Diagnostics *Error);
private:
Registry() LLVM_DELETED_FUNCTION;
};
} // namespace dynamic
} // namespace ast_matchers
} // namespace clang
#endif // LLVM_CLANG_AST_MATCHERS_DYNAMIC_REGISTRY_H
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