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Created: Mon, Aug 24, 7:14 AM

context.cpp
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	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	*
	* File: context.cpp
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* Created on 25/05/2020
	*/

	#include "query/contextalloc.h"
	#include "compilation/context.h"
	#include "llvmlayer.h"
	#include "llvm/IR/GlobalVariable.h"

	namespace xreate { namespace compilation{

	AllocContext*
	ContextManager::getContext(const std::string& id){
	if(__contexts.count(id)) return __contexts.at(id);

	AllocContext* context = new AllocContext(id, this, nullptr);
	__contexts.emplace(id, context);
	return context;
	}

	void
	AllocContext::set(const ASTSite& varS, llvm::Value* varRaw){
	LLVMLayer* llvm = __man->__pass->man->llvm;
	GlobalContextTable* tableGlobal = __man->__pass->getGlobalContextTable();

	llvm::Value* varStorage = tableGlobal->getVariable(varS);
	llvm->irBuilder.CreateStore(varRaw, varStorage);
	}

	llvm::Value*
	AllocContext::get(const ASTSite& varS){
	LLVMLayer* llvm = __man->__pass->man->llvm;
	GlobalContextTable* tableGlobal = __man->__pass->getGlobalContextTable();

	llvm::Value* varStorage = tableGlobal->getVariable(varS);
	return llvm->irBuilder.CreateLoad(varStorage);
	}

	void
	GlobalContextTable::compile(){
	LLVMLayer* llvm = __pass->man->llvm;
	TranscendLayer* transcend = __pass->man->transcend;
	ContextAllocQuery* query = dynamic_cast<ContextAllocQuery*>(transcend->getQuery(QueryId::ContextAllocQuery));
	llvm::Type* int8PT = llvm::PointerType::getInt8PtrTy(llvm->llvmContext);

	ContextAllocQuery::Model model = query->getModel();
	for(const auto& entry: model){
	llvm::GlobalVariable* varRaw = new llvm::GlobalVariable(
	*(llvm->module.get()), int8PT, false,
	llvm::GlobalValue::PrivateLinkage,
	llvm::UndefValue::get(int8PT)
	);

	__table.emplace(entry.second, varRaw);
	}
	}

	}} // xreate::compilation

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