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/*
* MRustC - Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* trans/mangling.hpp
* - Name mangling support
*
*
* $D = ! type
* $A = Array
* $S = *-ptr
* $R = &-ptr
* $P = + symbol
* $E = = symbol
* $C = , symbol
* $pL/$pR = Left/right paren
* $aL/$aR = Left/right angle (<>)
*/
#include "mangling.hpp"
#include <hir/type.hpp>
#include <hir/path.hpp>
namespace {
::FmtLambda emit_params(const ::HIR::PathParams& params)
{
return FMT_CB(ss,
if( params.m_types.size() > 0 )
{
ss << "$aL";
for(unsigned int i = 0; i < params.m_types.size(); i ++)
{
if(i != 0) ss << "$C";
ss << Trans_Mangle( params.m_types[i] );
}
ss << "$aR";
}
);
}
}
::FmtLambda Trans_Mangle(const ::HIR::GenericPath& path)
{
return FMT_CB(ss,
ss << "_ZN" << path.m_path.m_crate_name.size() << path.m_path.m_crate_name;
for(const auto& comp : path.m_path.m_components) {
if( comp[0] == '#' )
ss << (comp.size()-1+2) << "$H" << (comp.c_str()+1);
else
ss << comp.size() << comp;
}
ss << emit_params(path.m_params);
);
}
::FmtLambda Trans_Mangle(const ::HIR::Path& path)
{
TU_MATCHA( (path.m_data), (pe),
(Generic,
return Trans_Mangle(pe);
),
(UfcsUnknown,
BUG(Span(), "UfcsUnknown - " << path);
),
(UfcsKnown,
return FMT_CB(ss,
ss << "_ZRK$aL";
ss << Trans_Mangle(*pe.type);
ss << "_as_";
ss << Trans_Mangle(pe.trait);
ss << "$aR";
if( pe.item[0] == '#' )
ss << (pe.item.size()-1+2) << "$H" << (pe.item.c_str()+1);
else
ss << pe.item;
ss << emit_params(pe.params);
);
),
(UfcsInherent,
return FMT_CB(ss,
ss << "_ZRI$aL";
ss << Trans_Mangle(*pe.type);
ss << "$aR";
ss << pe.item;
ss << emit_params(pe.params);
);
)
)
throw "";
}
::FmtLambda Trans_Mangle(const ::HIR::TypeRef& ty)
{
TU_MATCHA( (ty.m_data), (te),
(Infer,
BUG(Span(), "Infer in trans");
),
(Diverge,
return FMT_CB(ss, ss << "$D";);
),
(Primitive,
return FMT_CB(ss, ss << te;);
),
(Path,
return Trans_Mangle(te.path);
),
(Generic,
BUG(Span(), "Generic in trans - " << ty);
),
(TraitObject,
return FMT_CB(ss,
ss << "$pL";
ss << Trans_Mangle(te.m_trait.m_path);
for(const auto& bound : te.m_trait.m_type_bounds) {
ss << "_" << bound.first << "$E" << Trans_Mangle(bound.second);
}
for(const auto& marker : te.m_markers) {
ss << "$P" << Trans_Mangle(marker);
}
ss << "$pR";
);
),
(ErasedType,
BUG(Span(), "ErasedType in trans - " << ty);
),
(Array,
return FMT_CB(ss, ss << "$A" << te.size_val << "_" << Trans_Mangle(*te.inner););
),
(Slice,
return FMT_CB(ss, ss << "$A" << "_" << Trans_Mangle(*te.inner););
),
(Tuple,
return FMT_CB(ss,
ss << "$T";
for(const auto& t : te)
ss << "_" << Trans_Mangle(t);
);
),
(Borrow,
return FMT_CB(ss,
ss << "$R";
switch(te.type)
{
case ::HIR::BorrowType::Shared: ss << "s"; break;
case ::HIR::BorrowType::Unique: ss << "u"; break;
case ::HIR::BorrowType::Owned : ss << "o"; break;
}
ss << "_" << Trans_Mangle(*te.inner);
);
),
(Pointer,
return FMT_CB(ss,
ss << "$S";
switch(te.type)
{
case ::HIR::BorrowType::Shared: ss << "s"; break;
case ::HIR::BorrowType::Unique: ss << "u"; break;
case ::HIR::BorrowType::Owned : ss << "o"; break;
}
ss << "_" << Trans_Mangle(*te.inner);
);
),
(Function,
return FMT_CB(ss,
if(te.m_abi != "Rust")
ss << "extern_" << te.m_abi << "_";
if(te.is_unsafe)
ss << "unsafe_";
ss << "fn_" << te.m_arg_types.size();
for(const auto& ty : te.m_arg_types)
ss << "_" << Trans_Mangle(ty);
ss << "_" << Trans_Mangle(*te.m_rettype);
);
),
(Closure,
BUG(Span(), "Closure during trans - " << ty);
)
)
throw "";
}
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