164 lines
5.4 KiB
C++
164 lines
5.4 KiB
C++
/* -*- C++ -*-
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* Serene programming language.
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*
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* Copyright (c) 2019-2021 Sameer Rahmani <lxsameer@gnu.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef SERENE_CONTEXT_H
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#define SERENE_CONTEXT_H
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#include "serene/diagnostics.h"
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#include "serene/environment.h"
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#include "serene/namespace.h"
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#include "serene/passes.h"
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#include "serene/slir/dialect.h"
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#include "serene/source_mgr.h"
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#include <llvm/ADT/None.h>
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#include <llvm/ADT/Optional.h>
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#include <llvm/ADT/StringRef.h>
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#include <llvm/IR/LLVMContext.h>
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#include <llvm/Support/Host.h>
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#include <memory>
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#include <mlir/Dialect/StandardOps/IR/Ops.h>
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#include <mlir/IR/MLIRContext.h>
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#include <mlir/Pass/PassManager.h>
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namespace serene {
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namespace reader {
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class LocationRange;
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}
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namespace exprs {
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class Expression;
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using Node = std::shared_ptr<Expression>;
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} // namespace exprs
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enum class CompilationPhase {
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Parse,
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Analysis,
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SLIR,
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MLIR, // Lowered slir to other dialects
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LIR, // Lowered to the llvm ir dialect
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IR, // Lowered to the LLVMIR itself
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NoOptimization,
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O1,
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O2,
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O3,
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};
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class SereneContext {
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struct Options {
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/// Whether to use colors for the output or not
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bool withColors = true;
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Options() = default;
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};
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public:
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// --------------------------------------------------------------------------
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// IMPORTANT:
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// These two contextes have to be the very first members of the class in
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// order to destroy last. DO NOT change the order or add anything before
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// them
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// --------------------------------------------------------------------------
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llvm::LLVMContext llvmContext;
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mlir::MLIRContext mlirContext;
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mlir::PassManager pm;
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std::unique_ptr<DiagnosticEngine> diagEngine;
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/// The source manager is responsible for loading namespaces and practically
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/// managing the source code in form of memory buffers.
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SourceMgr sourceManager;
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/// The set of options to change the compilers behaivoirs
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Options opts;
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std::string targetTriple;
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/// Insert the given `ns` into the context. The Context object is
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/// the owner of all the namespaces. The `ns` will overwrite any
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/// namespace with the same name.
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void insertNS(std::shared_ptr<Namespace> ns);
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/// Sets the n ame of the current namespace in the context and return
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/// a boolean indicating the status of this operation. The operation
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/// will fail if the namespace does not exist in the namespace table.
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bool setCurrentNS(llvm::StringRef ns_name);
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/// Return the current namespace that is being processed at the moment
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std::shared_ptr<Namespace> getCurrentNS();
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/// Lookup the namespace with the give name in the current context and
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/// return a shared pointer to it or a `nullptr` in it doesn't exist.
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std::shared_ptr<Namespace> getNS(llvm::StringRef ns_name);
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SereneContext()
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: pm(&mlirContext), diagEngine(makeDiagnosticEngine(*this)),
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targetPhase(CompilationPhase::NoOptimization) {
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mlirContext.getOrLoadDialect<serene::slir::SereneDialect>();
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mlirContext.getOrLoadDialect<mlir::StandardOpsDialect>();
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// We need to create one empty namespace, so that the JIT can
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// start it's operation.
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auto ns = makeNamespace(*this, "serene.user", llvm::None);
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// TODO: Get the crash report path dynamically from the cli
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// pm.enableCrashReproducerGeneration("/home/lxsameer/mlir.mlir");
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// TODO: Set the target triple with respect to the CLI args
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targetTriple = llvm::sys::getDefaultTargetTriple();
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};
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/// Set the target compilation phase of the compiler. The compilation
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/// phase dictates the behavior and the output type of the compiler.
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void setOperationPhase(CompilationPhase phase);
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CompilationPhase getTargetPhase() { return targetPhase; };
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int getOptimizatioLevel();
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NSPtr readNamespace(std::string name);
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NSPtr readNamespace(std::string name, reader::LocationRange loc);
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private:
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CompilationPhase targetPhase;
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// The namespace table. Every namespace that needs to be compiled has
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// to register itself with the context and appear on this table.
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// This table acts as a cache as well.
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std::map<std::string, std::shared_ptr<Namespace>> namespaces;
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// Why string vs pointer? We might rewrite the namespace and
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// holding a pointer means that it might point to the old version
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std::string current_ns;
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};
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/// Creates a new context object. Contexts are used through out the compilation
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/// process to store the state
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std::unique_ptr<SereneContext> makeSereneContext();
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}; // namespace serene
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#endif
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