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/*
* MRustC - Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* ast/pattern.cpp
* - AST::Pattern support/implementation code
*/
#include "../common.hpp"
#include "ast.hpp"
#include "pattern.hpp"
namespace AST {
::std::ostream& operator<<(::std::ostream& os, const Pattern& pat)
{
os << "Pattern(" << pat.m_binding << " @ ";
TU_MATCH(Pattern::Data, (pat.m_data), (ent),
(Any,
os << "_";
),
(MaybeBind,
os << "?";
),
(Ref,
os << "&" << (ent.mut ? "mut " : "") << *ent.sub;
),
(Value,
os << *ent.start;
if( ent.end.get() )
os << " ... " << *ent.end;
),
(Tuple,
os << "(" << ent.sub_patterns << ")";
),
(StructTuple,
os << ent.path << " (" << ent.sub_patterns << ")";
),
(Struct,
os << ent.path << " {" << ent.sub_patterns << "}";
)
)
os << ")";
return os;
}
void operator%(Serialiser& s, Pattern::Data::Tag c) {
s << Pattern::Data::tag_to_str(c);
}
void operator%(::Deserialiser& s, Pattern::Data::Tag& c) {
::std::string n;
s.item(n);
c = Pattern::Data::tag_from_str(n);
}
#define _D(VAR, ...) case Pattern::Data::TAG_##VAR: { m_data = Pattern::Data::make_null_##VAR(); auto& ent = m_data.as_##VAR(); (void)&ent; __VA_ARGS__ } break;
SERIALISE_TYPE(Pattern::, "Pattern", {
s.item(m_binding);
s % m_data.tag();
TU_MATCH(Pattern::Data, (m_data), (e),
(Any,
),
(MaybeBind,
),
(Ref,
s << e.mut;
s << e.sub;
),
(Value,
s << e.start;
s << e.end;
),
(Tuple,
s << e.sub_patterns;
),
(StructTuple,
s << e.path;
s << e.sub_patterns;
),
(Struct,
s << e.path;
s << e.sub_patterns;
)
)
},{
s.item(m_binding);
Pattern::Data::Tag tag;
s % tag;
switch(tag)
{
_D(Any, )
_D(MaybeBind,
)
_D(Ref,
s.item( ent.mut );
s.item( ent.sub );
)
_D(Value,
s.item( ent.start );
s.item( ent.end );
)
_D(Tuple,
s.item( ent.sub_patterns );
)
_D(StructTuple,
s.item( ent.path );
s.item( ent.sub_patterns );
)
_D(Struct,
s.item( ent.path );
s.item( ent.sub_patterns );
)
}
});
}
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