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/*
* MRustC - Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* parse/ttstrea.hpp
* - Token tree streams (for post-lex parsing)
*/
#pragma once
#include "tokentree.hpp"
#include "tokenstream.hpp"
/// Borrowed TTStream
class TTStream:
public TokenStream
{
::std::vector< ::std::pair<unsigned int, const TokenTree*> > m_stack;
::std::shared_ptr<Span> m_parent_span;
const Ident::Hygiene* m_hygiene_ptr = nullptr;
public:
TTStream(Span parent, const TokenTree& input_tt);
~TTStream();
TTStream& operator=(const TTStream& x) { m_stack = x.m_stack; return *this; }
Position getPosition() const override;
::std::shared_ptr<Span> outerSpan() const override { return m_parent_span; }
protected:
Ident::Hygiene realGetHygiene() const override;
Token realGetToken() override;
};
/// Owned TTStream
class TTStreamO:
public TokenStream
{
Position m_last_pos;
TokenTree m_input_tt;
::std::vector< ::std::pair<unsigned int, TokenTree*> > m_stack;
const Ident::Hygiene* m_hygiene_ptr = nullptr;
public:
::std::shared_ptr<Span> m_parent_span;
TTStreamO(Span parent, TokenTree input_tt);
TTStreamO(TTStreamO&& x) = default;
~TTStreamO();
TTStreamO& operator=(const TTStreamO& x) { m_stack = x.m_stack; return *this; }
TTStreamO& operator=(TTStreamO&& x) = default;
Position getPosition() const override;
::std::shared_ptr<Span> outerSpan() const override { return m_parent_span; }
protected:
Ident::Hygiene realGetHygiene() const override;
Token realGetToken() override;
};
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