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/*
* MRustC - Mutabah's Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* types.cpp
* - Backing code for the TypeRef class
*
* Handles a chunk of type resolution (merging) and matching/comparing types
*/
#include "types.hpp"
#include "ast/ast.hpp"
#include <ast/crate.hpp>
#include <ast/expr.hpp>
/// Mappings from internal type names to the core type enum
static const struct {
const char* name;
enum eCoreType type;
} CORETYPES[] = {
// NOTE: Sorted
{"_", CORETYPE_ANY},
{"bool", CORETYPE_BOOL},
{"char", CORETYPE_CHAR},
{"f32", CORETYPE_F32},
{"f64", CORETYPE_F64},
{"i128", CORETYPE_I128},
{"i16", CORETYPE_I16},
{"i32", CORETYPE_I32},
{"i64", CORETYPE_I64},
{"i8", CORETYPE_I8},
{"int", CORETYPE_INT},
{"isize", CORETYPE_INT},
{"str", CORETYPE_STR},
{"u128", CORETYPE_U128},
{"u16", CORETYPE_U16},
{"u32", CORETYPE_U32},
{"u64", CORETYPE_U64},
{"u8", CORETYPE_U8},
{"uint", CORETYPE_UINT},
{"usize", CORETYPE_UINT},
};
enum eCoreType coretype_fromstring(const ::std::string& name)
{
for(unsigned int i = 0; i < sizeof(CORETYPES)/sizeof(CORETYPES[0]); i ++)
{
if( name < CORETYPES[i].name )
break;
if( name == CORETYPES[i].name )
return CORETYPES[i].type;
}
return CORETYPE_INVAL;
}
const char* coretype_name(const eCoreType ct ) {
switch(ct)
{
case CORETYPE_INVAL:return "INVAL";
case CORETYPE_ANY: return "_";
case CORETYPE_CHAR: return "char";
case CORETYPE_STR: return "str";
case CORETYPE_BOOL: return "bool";
case CORETYPE_UINT: return "usize";
case CORETYPE_INT: return "isize";
case CORETYPE_U8: return "u8";
case CORETYPE_I8: return "i8";
case CORETYPE_U16: return "u16";
case CORETYPE_I16: return "i16";
case CORETYPE_U32: return "u32";
case CORETYPE_I32: return "i32";
case CORETYPE_U64: return "u64";
case CORETYPE_I64: return "i64";
case CORETYPE_U128: return "u128";
case CORETYPE_I128: return "i128";
case CORETYPE_F32: return "f32";
case CORETYPE_F64: return "f64";
}
DEBUG("Unknown core type?! " << ct);
return "NFI";
}
Type_Function::Type_Function(const Type_Function& other):
is_unsafe(other.is_unsafe),
m_abi(other.m_abi),
m_rettype( box$( other.m_rettype->clone() ) )
{
for( const auto& at : other.m_arg_types )
m_arg_types.push_back( at.clone() );
}
Ordering Type_Function::ord(const Type_Function& x) const
{
Ordering rv;
rv = ::ord(m_abi, x.m_abi);
if(rv != OrdEqual) return rv;
rv = ::ord(m_arg_types, x.m_arg_types);
if(rv != OrdEqual) return rv;
return (*m_rettype).ord( *x.m_rettype );
}
TypeRef::~TypeRef()
{
}
TypeRef TypeRef::clone() const
{
struct H {
static ::std::vector< ::TypeRef> clone_ty_vec(const ::std::vector<TypeRef>& x) {
::std::vector<TypeRef> rv;
rv.reserve(x.size());
for(const auto& t : x)
rv.push_back( t.clone() );
return rv;
}
};
switch( m_data.tag() )
{
case TypeData::TAGDEAD: assert(!"Copying a destructed type");
#define _COPY(VAR) case TypeData::TAG_##VAR: return TypeRef(m_span, TypeData::make_##VAR(m_data.as_##VAR()) ); break;
#define _CLONE(VAR, ...) case TypeData::TAG_##VAR: { auto& old = m_data.as_##VAR(); return TypeRef(m_span, TypeData::make_##VAR(__VA_ARGS__) ); } break;
_COPY(None)
_COPY(Any)
_COPY(Bang)
_CLONE(Macro, { old.inv.clone() })
//case TypeData::TAG_Macro: assert( !"Copying an unexpanded type macro" );
_COPY(Unit)
_COPY(Primitive)
_COPY(Function)
_CLONE(Tuple, { H::clone_ty_vec(old.inner_types) })
_CLONE(Borrow, { old.is_mut, box$(old.inner->clone()) })
_CLONE(Pointer, { old.is_mut, box$(old.inner->clone()) })
_CLONE(Array, { box$(old.inner->clone()), old.size })
_COPY(Generic)
_COPY(Path)
_COPY(TraitObject)
_COPY(ErasedType)
#undef _COPY
#undef _CLONE
}
throw "";
}
Ordering TypeRef::ord(const TypeRef& x) const
{
Ordering rv;
rv = ::ord( (unsigned)m_data.tag(), (unsigned)x.m_data.tag() );
if(rv != OrdEqual) return rv;
TU_MATCH(TypeData, (m_data, x.m_data), (ent, x_ent),
(None, return OrdEqual;),
(Macro, throw CompileError::BugCheck("TypeRef::ord - unexpanded macro");),
(Any, return OrdEqual;),
(Unit, return OrdEqual;),
(Bang, return OrdEqual;),
(Primitive,
return ::ord( (unsigned)ent.core_type, (unsigned)x_ent.core_type );
),
(Function,
return ent.info.ord( x_ent.info );
),
(Tuple,
return ::ord(ent.inner_types, x_ent.inner_types);
),
(Borrow,
rv = ::ord(ent.is_mut, x_ent.is_mut);
if(rv != OrdEqual) return rv;
return (*ent.inner).ord(*x_ent.inner);
),
(Pointer,
rv = ::ord(ent.is_mut, x_ent.is_mut);
if(rv != OrdEqual) return rv;
return (*ent.inner).ord(*x_ent.inner);
),
(Array,
rv = (*ent.inner).ord( *x_ent.inner );
if(rv != OrdEqual) return rv;
if(ent.size.get())
{
throw ::std::runtime_error("TODO: Sized array comparisons");
}
return OrdEqual;
),
(Generic,
return ::ord(ent.name, x_ent.name);
),
(Path,
return ent.path.ord( x_ent.path );
),
(TraitObject,
return ::ord(ent.traits, x_ent.traits);
),
(ErasedType,
return ::ord(ent.traits, x_ent.traits);
)
)
throw ::std::runtime_error(FMT("BUGCHECK - Unhandled TypeRef class '" << m_data.tag() << "'"));
}
::std::ostream& operator<<(::std::ostream& os, const eCoreType ct) {
return os << coretype_name(ct);
}
void TypeRef::print(::std::ostream& os, bool is_debug/*=false*/) const
{
//os << "TypeRef(";
#define _(VAR, ...) case TypeData::TAG_##VAR: { const auto &ent = this->m_data.as_##VAR(); (void)&ent; __VA_ARGS__ } break;
switch(this->m_data.tag())
{
case TypeData::TAGDEAD: throw "";
_(None,
os << "!!";
)
_(Any,
os << "_";
)
_(Bang,
os << "!";
)
_(Macro,
os << ent.inv;
)
_(Unit,
os << "()";
)
_(Primitive,
os << ent.core_type;
)
_(Function,
if( ent.info.m_abi != "" )
os << "extern \"" << ent.info.m_abi << "\" ";
os << "fn (";
for( const auto& arg : ent.info.m_arg_types )
{
arg.print(os, is_debug);
os << ", ";
}
os << ") -> " << *ent.info.m_rettype;
)
_(Tuple,
os << "( ";
for( const auto& it : ent.inner_types )
{
it.print(os, is_debug);
os << ", ";
}
os << ")";
)
_(Borrow,
os << "&" << (ent.is_mut ? "mut " : "");
ent.inner->print(os, is_debug);
)
_(Pointer,
os << "*" << (ent.is_mut ? "mut" : "const");
ent.inner->print(os, is_debug);
)
_(Array,
os << "[";
ent.inner->print(os, is_debug);
if( ent.size.get() )
os << "; " << *ent.size;
os << "]";
)
_(Generic,
if(is_debug)
os << "/* arg */ ";
os << ent.name;
if(is_debug)
os << "/*"<<ent.index<<"*/";
)
_(Path,
ent.path.print_pretty(os, true, is_debug);
)
_(TraitObject,
os << "(";
for( const auto& it : ent.traits ) {
if( &it != &ent.traits.front() )
os << "+";
it.print_pretty(os, true, is_debug);
}
os << ")";
)
_(ErasedType,
os << "impl ";
for( const auto& it : ent.traits ) {
if( &it != &ent.traits.front() )
os << "+";
it.print_pretty(os, true, is_debug);
}
os << "";
)
}
#undef _
}
::std::ostream& operator<<(::std::ostream& os, const TypeRef& tr) {
tr.print(os, true);
return os;
}
::std::ostream& operator<<(::std::ostream& os, const PrettyPrintType& x) {
x.m_type.print(os, false);
return os;
}
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