gencpp/project/components/temp/especifier.hpp

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// This is the non-bootstraped version of the ESpecifier. This will be obsolete once bootstrap is stress tested.
namespace ESpecifier
{
/*
Note: The following are handled separately:
attributes
alignas
*/
# define Define_Specifiers \
Entry( Invalid, INVALID ) \
Entry( Consteval, consteval ) \
Entry( Constexpr, constexpr ) \
Entry( Constinit, constinit ) \
Entry( Explicit, explicit ) \
Entry( External_Linkage, extern ) \
Entry( Global, global ) \
Entry( Inline, inline ) \
Entry( Internal_Linkage, internal ) \
Entry( Local_Persist, local_persist ) \
Entry( Mutable, mutable ) \
Entry( NeverInline, neverinline ) \
Entry( Ptr, * ) \
Entry( Ref, & ) \
Entry( Register, register ) \
Entry( RValue, && ) \
Entry( Static, static ) \
Entry( Thread_Local, thread_local ) \
Entry( Volatile, volatile ) \
Entry( Virtual, virtual ) \
Entry( Const, const ) \
Entry( Final, final ) \
Entry( Override, override ) \
Entry( Pure, = 0 )
enum Type : u32
{
# define Entry( Specifier, Code ) Specifier,
Define_Specifiers
# undef Entry
NumSpecifiers,
};
inline
bool is_trailing( Type specifier )
{
return specifier > Virtual;
}
// Specifier to string
inline
StrC to_str( Type specifier )
{
local_persist
StrC lookup[ NumSpecifiers ] = {
# pragma push_macro( "global" )
# pragma push_macro( "internal" )
# pragma push_macro( "local_persist" )
# pragma push_macro( "neverinline" )
# undef global
# undef internal
# undef local_persist
# undef neverinline
# define Entry( Spec_, Code_ ) { sizeof(stringize(Code_)), stringize(Code_) },
Define_Specifiers
# undef Entry
# pragma pop_macro( "global" )
# pragma pop_macro( "internal" )
# pragma pop_macro( "local_persist" )
# pragma pop_macro( "neverinline" )
};
return lookup[ specifier ];
}
inline
Type to_type( StrC str )
{
local_persist
u32 keymap[ NumSpecifiers ];
do_once_start
for ( u32 index = 0; index < NumSpecifiers; index++ )
{
StrC enum_str = to_str( (Type)index );
// We subtract 1 to remove the null terminator
// This is because the tokens lexed are not null terminated.
keymap[index] = crc32( enum_str.Ptr, enum_str.Len - 1);
}
do_once_end
u32 hash = crc32( str.Ptr, str.Len );
for ( u32 index = 0; index < NumSpecifiers; index++ )
{
if ( keymap[index] == hash )
return (Type)index;
}
return Invalid;
}
# undef Define_Specifiers
}
using SpecifierT = ESpecifier::Type;