/**
  *
  *                  OOAS Compiler - C++ AST
  *
  * Copyright 2015, AIT Austrian Institute of Technology.
  * All rights reserved.
  *
  * SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.
  *
  * If you modify the file please update the list of contributors below to in-
  * clude your name. Please also stick to the coding convention of using TABs
  * to do the basic (block-level) indentation and spaces for anything after
  * that. (Enable the display of special chars and it should be pretty obvious
  * what this means.) Also, remove all trailing whitespace.
  *
  * Contributors:
  *               Willibald Krenn (AIT)
  *               Stephan Zimmerer (AIT)
  *               Christoph Czurda (AIT)
  *
  */




#pragma once

#include <ast/statements/Statement.hpp>
#include <ast/SymbolTable.hpp>
#include <deque>

namespace Ast {

class Block:
	public Statement,
	public IScope
{
protected:
	SymbolTable* m_symbols;
	StatementList m_statements;
	Expression* m_filter;
	IScope* m_parentScope;

	Block(StatementKind kind):
		Statement(kind),
		m_symbols (nullptr),
		m_statements (),
		m_filter (nullptr),
		m_parentScope (nullptr)
	{}
	Block(const Block& toCopy):
		Statement(toCopy),
		m_symbols (toCopy.m_symbols),
		m_statements (toCopy.m_statements),
		m_filter (toCopy.m_filter),
		m_parentScope (toCopy.m_parentScope)
	{}

public:
	void init(std::int32_t line, std::int32_t col, SymbolTable* symTabRef,
				StatementList* stmtListRef, IScope* scopeRef)
	{
		init(line,col,symTabRef,stmtListRef,scopeRef,nullptr);
	}
	void init(std::int32_t line, std::int32_t col, SymbolTable* symTabRef,
				StatementList* stmtListRef, IScope* scopeRef, Expression* filter)
	{
		Statement::init(line,col);
		m_symbols = symTabRef;
		m_statements = std::move(*stmtListRef);
		m_parentScope = scopeRef;
		m_filter = filter;
	}


	SymbolTable* symbols() const {return m_symbols;};
	Expression* filter() const {return m_filter;};
	StatementList& statements() {return m_statements;};

	void addStatement(Statement* toAdd){
		IScope* childScope = toAdd->asScope();
		if (childScope != nullptr)
			childScope->setParentScope((IScope*)this);
		m_statements.push_back(toAdd);
	};
	void setFilter(Expression* sexpr) {m_filter = sexpr;};
	bool isSimpleBlock() {return m_symbols->size() == 0 && m_filter == nullptr;};

	Identifier* resolveIdentifier(const std::string& aName) const override { return m_symbols->get(aName); };
	IScope* getParentScope() const {return m_parentScope;};
	std::string getScopeName() const override {return "";}

	void setParentScope(IScope* parentScope) {m_parentScope = parentScope;};
	void addIdentifier(Identifier* anIdentifier, void* /*tag*/) {m_symbols->addIdentifier(anIdentifier);};

	IScope* asScope() final {return (IScope*)this;}
};

}