serene/include/serene/context.h

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/* -*- C++ -*-
* Serene programming language.
*
* Copyright (c) 2019-2021 Sameer Rahmani <lxsameer@gnu.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef SERENE_CONTEXT_H
#define SERENE_CONTEXT_H
#include "mlir/IR/MLIRContext.h"
#include "serene/environment.h"
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#include "serene/namespace.h"
#include "serene/slir/dialect.h"
#include "llvm/ADT/StringRef.h"
#include <memory>
namespace serene {
namespace exprs {
class Expression;
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using Node = std::shared_ptr<Expression>;
} // namespace exprs
class SereneContext {
std::map<std::string, std::shared_ptr<Namespace>> namespaces;
// Why string vs pointer? We might rewrite the namespace and
// holding a pointer means that it might point to the old version
std::string current_ns;
public:
mlir::MLIRContext mlirContext;
/// Insert the given `ns` into the context. The Context object is
/// the owner of all the namespaces. The `ns` will overwrite any
/// namespace with the same name.
void insertNS(std::shared_ptr<Namespace> ns);
/// Sets the n ame of the current namespace in the context and return
/// a boolean indicating the status of this operation. The operation
/// will fail if the namespace does not exist in the namespace table.
bool setCurrentNS(llvm::StringRef ns_name);
std::shared_ptr<Namespace> getCurrentNS();
std::shared_ptr<Namespace> getNS(llvm::StringRef ns_name);
SereneContext() {
mlirContext.getOrLoadDialect<serene::slir::SereneDialect>();
};
};
/// Creates a new context object. Contexts are used through out the compilation
/// process to store the state
std::unique_ptr<SereneContext> makeSereneContext();
}; // namespace serene
#endif