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gencpp/project/gen.cpp

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// ReSharper disable CppClangTidyClangDiagnosticSwitchEnum
#ifdef gen_time
#include "Bloat.hpp"
#include "gen.hpp"
namespace gen
{
ZPL_TABLE_DEFINE( StringTable, str_tbl_, String );
namespace StaticData
{
static Array(Pool) CodePools = nullptr;
static Array(Arena) CodeEntriesArenas = nullptr;
static Array(Arena) StringArenas = nullptr;
static StringTable StringMap;
// static TypeTable TypeMap;
static AllocatorInfo Allocator_DataArrays = heap();
static AllocatorInfo Allocator_CodePool = heap();
static AllocatorInfo Allocator_CodeEntriesArena = heap();
static AllocatorInfo Allocator_StringArena = heap();
static AllocatorInfo Allocator_StringTable = heap();
static AllocatorInfo Allocator_TypeTable = heap();
}
#pragma region Constants
Code type_ns(auto);
Code type_ns(void);
Code type_ns(int);
Code type_ns(bool);
Code type_ns(char);
Code type_ns(wchar_t);
#ifdef GEN_DEFINE_LIBRARY_CODE_CONSTANTS
Code type_ns(b32);
Code type_ns(s8);
Code type_ns(s16);
Code type_ns(s32);
Code type_ns(s64);
Code type_ns(u8);
Code type_ns(u16);
Code type_ns(u32);
Code type_ns(u64);
Code type_ns(sw);
Code type_ns(uw);
Code type_ns(f32);
Code type_ns(f64);
#endif
Code access_public;
Code access_protected;
Code access_private;
Code module_global_fragment;
Code module_private_fragment;
Code pragma_once;
Code spec_const;
Code spec_consteval;
Code spec_constexpr;
Code spec_constinit;
Code spec_extern_linkage;
Code spec_inline;
Code spec_internal_linkage;
Code spec_local_persist;
Code spec_mutable;
Code spec_ptr;
Code spec_ref;
Code spec_register;
Code spec_rvalue;
Code spec_static_member;
Code spec_thread_local;
Code spec_volatile;
Code spec_type_signed;
Code spec_type_unsigned;
Code spec_type_short;
Code spec_type_long;
#pragma endregion Constants
#pragma region AST Body Case Macros
# define AST_BODY_CLASS_UNALLOWED_TYPES \
case Attributes: \
case Class_Body: \
case Enum_Body: \
case Extern_Linkage: \
case Function_Body: \
case Function_Fwd: \
case Global_Body: \
case Namespace: \
case Namespace_Body: \
case Operator: \
case Operator_Fwd: \
case Parameters: \
case Specifiers: \
case Struct_Body: \
case Typename:
# define AST_BODY_FUNCTION_UNALLOWED_TYPES \
case Access_Public: \
case Access_Protected: \
case Access_Private: \
case Attributes: \
case Class_Body: \
case Enum_Body: \
case Extern_Linkage: \
case Friend: \
case Function_Body: \
case Function_Fwd: \
case Global_Body: \
case Namespace: \
case Namespace_Body: \
case Operator: \
case Operator_Fwd: \
case Operator_Member: \
case Operator_Member_Fwd: \
case Parameters: \
case Specifiers: \
case Struct_Body: \
case Typename:
# define AST_BODY_GLOBAL_UNALLOWED_TYPES \
case Access_Public: \
case Access_Protected: \
case Access_Private: \
case Attributes: \
case Class_Body: \
case Enum_Body: \
case Execution: \
case Friend: \
case Function_Body: \
case Global_Body: \
case Namespace_Body: \
case Operator_Member: \
case Operator_Member_Fwd: \
case Parameters: \
case Specifiers: \
case Struct_Body: \
case Typename:
# define AST_BODY_EXPORT_UNALLOWED_TYPES AST_BODY_GLOBAL_UNALLOWED_TYPES
# define AST_BODY_NAMESPACE_UNALLOWED_TYPES AST_BODY_GLOBAL_UNALLOWED_TYPES
# define AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES AST_BODY_GLOBAL_UNALLOWED_TYPES
# define AST_BODY_STRUCT_UNALLOWED_TYPES AST_BODY_CLASS_UNALLOWED_TYPES
#pragma endregion AST Body Case Macros
#pragma region AST
Code Code::Global;
Code Code::Invalid;
AST* AST::duplicate()
{
using namespace ECode;
Code
result = make_code();
result->Parent = Parent;
result->Name = Name;
result->Type = Type;
result->Op = Op;
switch ( Type )
{
case Invalid:
log_failure( "AST::duplicate: Cannot duplicate an invalid AST." );
return nullptr;
case Access_Public:
case Access_Protected:
case Access_Private:
case Attributes:
case Comment:
case Execution:
case Module:
case Preprocessor_Include:
case Untyped:
// Can just be the same, as its a cached string.
result->Content = Content;
return result;
case Specifiers:
// Need to memcpy the specifiers.
mem_copy( result->ArrSpecs, ArrSpecs, sizeof( ArrSpecs ) );
result->StaticIndex = StaticIndex;
return result;
// The main purpose of this is to make sure entires in the AST are unique,
// So that we can assign the new parent without corrupting the existing AST.
case Class:
case Class_Fwd:
case Class_Body:
case Enum:
case Enum_Fwd:
case Enum_Body:
case Enum_Class:
case Enum_Class_Fwd:
case Export_Body:
case Extern_Linkage:
case Extern_Linkage_Body:
case Friend:
case Function:
case Function_Fwd:
case Function_Body:
case Global_Body:
case Namespace:
case Namespace_Body:
case Operator:
case Operator_Fwd:
case Operator_Member:
case Operator_Member_Fwd:
case Parameters:
case Struct:
case Struct_Fwd:
case Struct_Body:
case Typedef:
case Typename:
case Union:
case Union_Body:
case Using:
case Using_Namespace:
case Variable:
s32 index = 0;
s32 left = num_entries();
while ( left -- )
{
// This will naturally duplicate the entire chain duplicate all of the ast nodes.
// It may not be the most optimal way for memory reasons, however figuring out the heuristic
// For when it should reparent all nodes or not is not within the simple scope of this library.
result->add_entry( entry(index)->duplicate() );
index++;
}
return result;
}
log_failure( "AST::duplicate: Unknown AST type %s.", type_str() );
return nullptr;
}
String AST::to_string()
{
# define ProcessModuleFlags() \
if ( bitfield_is_equal( u32, ModuleFlags, ModuleFlag::Export )) \
result.append( "export " ); \
\
if ( bitfield_is_equal( u32, ModuleFlags, ModuleFlag::Import )) \
result.append( "import " ); \
String result = String::make( g_allocator, "" );
switch ( Type )
{
using namespace ECode;
case Invalid:
log_failure("Attempted to serialize invalid code! - %s", Name);
break;
case Untyped:
case Execution:
result.append( Content );
break;
case Comment:
{
static char line[MaxCommentLineLength];
s32 left = Content.length();
s32 index = 0;
do
{
s32 length = 0;
while ( left && Content[index] != '\n' )
{
length++;
left--;
}
str_copy( line, Content, length );
line[length] = '\0';
result.append_fmt( "// %s", line );
}
while ( left--, left > 0 );
}
break;
case Access_Private:
case Access_Protected:
case Access_Public:
result.append( Name );
break;
case Attributes:
result.append( Content );
case Class:
{
ProcessModuleFlags();
if ( num_entries() > 1 )
{
result.append( "class " );
s32 idx = 1;
if ( entry( idx )->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
result.append( Name );
AST const* parent = entry( idx );
if ( parent )
{
char const* access_level = to_str( ParentAccess );
result.append_fmt( ": %s %s\n{\n"
, access_level
, parent
);
}
else
{
result.append( "\n{\n" );
}
result.append_fmt( "%s\n};", body()->to_string() );
}
else
{
result.append_fmt( "class %s\n{\n%s\n};", Name, body()->to_string() );
}
}
break;
case Class_Fwd:
{
ProcessModuleFlags();
result.append_fmt( "class %s;", Name );
}
break;
case Enum:
{
ProcessModuleFlags();
result.append( "enum " );
if ( num_entries() > 1 )
{
s32 idx = 1;
AST const* current = entry( idx);
if ( current->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
if ( current->Type == Typename)
{
result.append_fmt( "%s : %s\n{\n"
, Name
, entry( idx )->to_string()
);
}
else
{
result.append_fmt( "%s\n{\n"
, Name
);
}
}
else
{
result.append_fmt( "%s\n{\n"
, Name
);
}
result.append_fmt( "%s};"
, body()->to_string()
);
}
break;
case Enum_Fwd:
{
ProcessModuleFlags();
result.append_fmt( "enum %s : %s;", Name, entry( 0 )->to_string() );
}
break;
case Enum_Class:
{
ProcessModuleFlags();
result.append( "enum class " );
if ( num_entries() > 1 )
{
s32 idx = 1;
if ( entry( idx )->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
if ( entry( idx )->Type == Typename )
{
result.append_fmt( "%s : %s\n{\n"
, Name
, entry( idx )->to_string()
);
}
else
{
result.append_fmt( "%s\n{\n"
, Name
);
}
}
result.append_fmt( "%s\n};"
, body()->to_string()
);
}
break;
case Enum_Class_Fwd:
{
ProcessModuleFlags();
result.append( "enum class " );
s32 idx = 0;
if ( entry( idx )->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
result.append_fmt( "%s : %s;", Name, entry( idx )->to_string() );
}
break;
case Export_Body:
{
result.append_fmt( "export\n{\n" );
s32 index = 0;
s32 left = num_entries();
while ( left -- )
{
result.append_fmt( "%s\n", entry( index )->to_string() );
index++;
}
result.append_fmt( "};" );
}
break;
case Extern_Linkage:
ProcessModuleFlags();
result.append_fmt( "extern \"%s\"\n{\n%s\n}"
, Name
, body()->to_string()
);
break;
case Friend:
result.append_fmt( "friend %s", entry( 0 )->to_string() );
break;
case Function:
{
ProcessModuleFlags();
u32 idx = 1;
u32 left = num_entries();
AST* current = entry( idx );
if ( current && current->Type == Attributes )
{
result.append_fmt( "%s ", current->to_string() );
idx++;
left--;
current = entry( idx );
}
if ( current && current->Type == Specifiers )
{
result.append_fmt( "%s\n", current->to_string() );
idx++;
left--;
current = entry( idx );
}
if ( current && current->Type == Typename )
{
result.append_fmt( "%s ", current->to_string() );
idx++;
left--;
current = entry( idx );
}
result.append_fmt( "%s(", Name );
if ( left && current && current->Type == Parameters )
{
result.append_fmt("%s", current->to_string() );
idx++;
left--;
current = entry( idx );
}
else
{
result.append( "void" );
}
result.append_fmt( ")\n{\n%s\n}"
, body()->to_string()
);
}
break;
case Function_Fwd:
{
ProcessModuleFlags();
u32 idx = 0;
u32 left = num_entries();
AST* current = entry( idx );
if ( current && current->Type == Attributes )
{
result.append_fmt( "%s ", current->to_string() );
idx++;
left--;
current = entry( idx );
}
if ( current && current->Type == Specifiers )
{
result.append_fmt( "%s\n", current->to_string() );
idx++;
left--;
current = entry( idx );
}
if ( current && current->Type == Typename )
{
result.append_fmt( "%s ", current->to_string() );
idx++;
left--;
current = entry( idx );
}
result.append_fmt( "%s(", Name );
if ( left && current && current->Type == Parameters )
{
result.append_fmt("%s", current->to_string() );
idx++;
left--;
current = entry( idx );
}
else
{
result.append( "void" );
}
result.append( ");" );
}
break;
case Module:
if (((u32(ModuleFlag::Export) & u32(ModuleFlags)) == u32(ModuleFlag::Export)))
result.append("export ");
if (((u32(ModuleFlag::Import) & u32(ModuleFlags)) == u32(ModuleFlag::Import)))
result.append("import ");
result.append_fmt( "%s;", Name );
break;
case Namespace:
ProcessModuleFlags();
result.append_fmt( "namespace %s\n{\n%s\n};"
, Name
, body()->to_string()
);
break;
case Operator:
case Operator_Member:
{
ProcessModuleFlags();
s32 idx = 1;
if ( entry( idx )->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
if ( entry( idx )->Type == Specifiers )
{
result.append_fmt( "%s\n", entry( idx )->to_string() );
idx++;
}
result.append_fmt( "%s %s (", entry( idx )->to_string(), Name );
idx++;
if ( entry( idx )->Type == Parameters )
{
result.append_fmt( "%s", entry( idx )->to_string() );
idx++;
}
else
{
result.append_fmt( "void" );
}
result.append_fmt( ")\n{\n%s\n}"
, body()->to_string()
);
}
break;
case Operator_Fwd:
case Operator_Member_Fwd:
{
ProcessModuleFlags();
s32 idx = 0;
if ( entry( idx )->Type == Specifiers )
{
result.append_fmt( "%s", entry( idx )->to_string() );
idx++;
}
result.append_fmt( "%s %s (", entry( idx )->to_string(), Name );
idx++;
if ( entry( idx )->Type == Parameters )
{
result.append_fmt( "%s);", entry( idx )->to_string() );
idx++;
}
else
{
result.append_fmt( "void);" );
}
}
break;
case Parameters:
{
result.append_fmt( "%s %s", entry( 0 )->to_string(), Name );
s32 index = 1;
s32 left = num_entries() - 1;
while ( left-- )
{
result.append_fmt( ", %s %s"
, entry( index )->entry( 0 )->to_string()
, entry( index )->Name
);
index++;
}
}
break;
case Preprocessor_Include:
result.append_fmt( "#include \"%s\"", Name );
break;
case Specifiers:
{
s32 idx = 0;
s32 left = StaticIndex;
while ( left-- )
{
result.append_fmt( "%s ", (char const*)ESpecifier::to_str( ArrSpecs[idx]) );
idx++;
}
}
break;
case Struct:
{
ProcessModuleFlags();
result.append( "struct ");
if ( num_entries() > 1 )
{
s32 idx = 1;
AST* current = entry( idx );
if ( current && current->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
current = entry( idx );
}
result.append_fmt( "%s", Name );
if ( current )
{
switch ( ParentAccess )
{
case AccessSpec::Private:
case AccessSpec::Protected:
case AccessSpec::Public:
result.append_fmt( " : %s %s", to_str(ParentAccess), current->to_string() );
idx++;
break;
default:
result.append_fmt( " : %s", current->to_string() );
break;
}
}
result.append_fmt( "\n{\n%s\n};", body()->to_string() );
break;
}
result.append_fmt( "%s\n{\n%s\n};", Name, body()->to_string() );
}
break;
case Struct_Fwd:
{
ProcessModuleFlags();
result.append( "struct ");
s32 idx = 1;
if ( entry( idx )->Type == Specifiers )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
result.append_fmt( "%s;", Name );
}
break;
case Variable:
{
ProcessModuleFlags();
s32 idx = 1;
if ( num_entries() > 1 )
{
if ( entry( idx )->Type == Specifiers )
{
result.append_fmt( "%s", entry( idx )->to_string() );
idx++;
}
result.append_fmt( "%s %s", entry( 0 )->to_string(), Name );
if ( entry( idx ) )
result.append_fmt( " = %s;", entry( idx )->to_string() );
break;
}
result.append_fmt( "%s %s;", entry( 0 )->to_string(), Name );
}
break;
case Typedef:
{
ProcessModuleFlags();
AST* type = entry( 0 );
if ( entry( 1 ) && entry( 1 )->Type == Attributes )
{
result.append_fmt( "%s ", entry( 1 )->to_string() );
}
result.append_fmt( "typedef %s %s", type->to_string(), Name );
if ( type->entry( 1 ) )
{
result.append_fmt( "[%s];", type->entry( 1 )->to_string() );
}
else
{
result.append( ";" );
}
}
break;
case Typename:
if ( num_entries() && entry( 0 ) )
{
result.append_fmt( "%s %s", Name, entry( 0 )->to_string() );
}
else
{
result.append_fmt( "%s", Name );
}
break;
case Union:
{
ProcessModuleFlags();
s32 idx = 0;
result.append( "union " );
if ( entry( idx )->Type == Attributes )
{
result.append_fmt( "%s ", entry( idx )->to_string() );
idx++;
}
result.append_fmt( "%s\n{\n%s\n};"
, Name
, body()->to_string()
);
}
break;
case Using:
{
ProcessModuleFlags();
AST* type = entry( 0 );
if ( entry( 1 ) && entry( 1 )->Type == Attributes )
{
result.append_fmt( "%s ", entry( 1 )->to_string() );
}
if ( type )
{
result.append_fmt( "using %s = %s", Name, type->to_string() );
if ( type->entry( 1 ) )
result.append_fmt( "[%s]", type->entry( 1 )->to_string() );
result.append( ";" );
}
else
result.append_fmt( "using %s;", Name );
}
break;
case Using_Namespace:
result.append_fmt( "using namespace %s;", Name );
break;
case Class_Body:
case Enum_Body:
case Extern_Linkage_Body:
case Function_Body:
case Global_Body:
case Namespace_Body:
case Struct_Body:
case Union_Body:
{
s32 index = 0;
s32 left = num_entries();
while ( left -- )
{
result.append_fmt( "%s\n", entry( index )->to_string() );
index++;
}
}
break;
}
return result;
#undef ProcessModuleFlags
}
bool AST::is_equal( AST* other )
{
if ( Type != other->Type )
return false;
switch ( Type )
{
case ECode::Typedef:
case ECode::Typename:
{
if ( Name != other->Name )
return false;
if ( num_entries() != other->num_entries() )
return false;
for ( s32 i = 0; i < num_entries(); ++i )
{
if ( entry( i ) != other->entry( i ) )
return false;
}
return true;
}
}
if ( Name != other->Name )
return false;
return true;
}
#pragma endregion AST
#pragma region Gen Interface
void init()
{
using namespace StaticData;
// Setup the arrays
{
if (! array_init_reserve( CodePools, Allocator_DataArrays, InitSize_DataArrays ) )
fatal( "gen::init: Failed to initialize the CodePools array" );
if ( ! array_init_reserve( CodeEntriesArenas, Allocator_DataArrays, InitSize_DataArrays ) )
fatal( "gen::init: Failed to initialize the CodeEntriesPools array" );
if ( ! array_init_reserve( StringArenas, Allocator_DataArrays, InitSize_DataArrays ) )
fatal( "gen::init: Failed to initialize the StringArenas array" );
}
// Setup the code pool and code entries arena.
{
Pool code_pool;
pool_init( & code_pool, Allocator_CodePool, CodePool_NumBlocks, sizeof(AST) );
if ( code_pool.physical_start == nullptr )
fatal( "gen::init: Failed to initialize the code pool" );
array_append( CodePools, code_pool );
Arena code_entires_arena;
arena_init_from_allocator( & code_entires_arena, Allocator_CodeEntriesArena, SizePer_CodeEntriresArena );
if ( code_entires_arena.physical_start == nullptr )
fatal( "gen::init: Failed to initialize the code entries arena" );
array_append( CodeEntriesArenas, code_entires_arena );
Arena string_arena;
arena_init_from_allocator( & string_arena, Allocator_StringArena, SizePer_StringArena );
if ( string_arena.physical_start == nullptr )
fatal( "gen::init: Failed to initialize the string arena" );
array_append( StringArenas, string_arena );
}
// Setup the hash tables
{
str_tbl_init ( & StringMap, Allocator_StringTable );
if ( StringMap.entries == nullptr )
fatal( "gen::init: Failed to initialize the StringMap");
}
Code::Global = make_code();
Code::Global->Name = get_cached_string( name("Global Code") );
Code::Global->Content = Code::Global->Name;
Code::Invalid = make_code();
Code::Invalid.set_global();
# define def_constant_code_type( Type_ ) \
type_ns(Type_) = def_type( name(Type_) ); \
type_ns(Type_).set_global();
def_constant_code_type( auto );
def_constant_code_type( void );
def_constant_code_type( int );
def_constant_code_type( bool );
def_constant_code_type( char );
def_constant_code_type( wchar_t );
#ifdef GEN_DEFINE_LIBRARY_CODE_CONSTANTS
type_ns(b32) = def_type( name(b32) );
def_constant_code_type( s8 );
def_constant_code_type( s16 );
def_constant_code_type( s32 );
def_constant_code_type( s64 );
def_constant_code_type( u8 );
def_constant_code_type( u16 );
def_constant_code_type( u32 );
def_constant_code_type( u64 );
def_constant_code_type( sw );
def_constant_code_type( uw );
def_constant_code_type( f32 );
def_constant_code_type( f64 );
#endif
# undef def_constant_code_type
access_private = make_code();
access_private->Type = ECode::Access_Private;
access_private->Name = get_cached_string( StrC::from("private:") );
access_private.set_global();
access_protected = make_code();
access_protected->Type = ECode::Access_Protected;
access_protected->Name = get_cached_string( StrC::from("protected:") );
access_protected.set_global();
access_public = make_code();
access_public->Type = ECode::Access_Public;
access_public->Name = get_cached_string( StrC::from("public:") );
access_public.set_global();
module_global_fragment = make_code();
module_global_fragment->Type = ECode::Untyped;
module_global_fragment->Name = get_cached_string( StrC::from("module;") );
module_global_fragment->Content = module_global_fragment->Name;
module_global_fragment.set_global();
module_private_fragment = make_code();
module_private_fragment->Type = ECode::Untyped;
module_private_fragment->Name = get_cached_string( StrC::from("module : private;") );
module_private_fragment->Content = module_private_fragment->Name;
module_private_fragment.set_global();
pragma_once = make_code();
pragma_once->Type = ECode::Untyped;
pragma_once->Name = get_cached_string( StrC::from("#pragma once") );
pragma_once->Content = pragma_once->Name;
pragma_once.set_global();
# define def_constant_spec( Type_, ... ) \
spec_##Type_ = def_specifiers( macro_num_args(__VA_ARGS__), __VA_ARGS__); \
spec_##Type_.set_global();
def_constant_spec( consteval, ESpecifier::Consteval );
def_constant_spec( constexpr, ESpecifier::Constexpr );
def_constant_spec( constinit, ESpecifier::Constinit );
def_constant_spec( extern_linkage, ESpecifier::External_Linkage );
def_constant_spec( const, ESpecifier::Const );
def_constant_spec( inline, ESpecifier::Inline );
def_constant_spec( internal_linkage, ESpecifier::Internal_Linkage );
def_constant_spec( mutable, ESpecifier::Mutable );
def_constant_spec( ptr, ESpecifier::Ptr );
def_constant_spec( ref, ESpecifier::Ref );
def_constant_spec( register, ESpecifier::Register );
def_constant_spec( rvalue, ESpecifier::RValue );
def_constant_spec( static_member, ESpecifier::Static_Member );
def_constant_spec( thread_local, ESpecifier::Thread_Local );
def_constant_spec( volatile, ESpecifier::Volatile)
spec_local_persist = def_specifiers( 1, ESpecifier::Local_Persist );
spec_local_persist.set_global();
# undef def_constant_spec
}
void deinit()
{
using namespace StaticData;
s32 index = 0;
s32 left = array_count( CodePools );
do
{
Pool* code_pool = & CodePools[index];
pool_free( code_pool );
index++;
}
while ( left--, left );
index = 0;
left = array_count( CodeEntriesArenas );
do
{
Arena* code_entries_arena = & CodeEntriesArenas[index];
arena_free( code_entries_arena );
index++;
}
while ( left--, left );
index = 0;
left = array_count( StringArenas );
do
{
Arena* string_arena = & StringArenas[index];
arena_free( string_arena );
index++;
}
while ( left--, left );
str_tbl_destroy( & StringMap );
// type_tbl_destroy( & TypeMap );
array_free( CodePools );
array_free( CodeEntriesArenas );
array_free( StringArenas );
}
void clear_code_memory()
{
using namespace StaticData;
// Clear the code pools
{
s32 index = 0;
s32 left = array_count( CodePools );
while ( left-- )
{
Pool* code_pool = & CodePools[index];
pool_free( code_pool );
index++;
}
array_clear( CodePools );
}
// Clear the code entries arenas
{
s32 index = 0;
s32 left = array_count( CodeEntriesArenas );
while ( left-- )
{
Arena* code_entries_arena = & CodeEntriesArenas[index];
arena_free( code_entries_arena );
index++;
}
array_clear( CodeEntriesArenas );
}
}
inline
AllocatorInfo get_string_allocator( s32 str_length )
{
using namespace StaticData;
if ( StringArenas->total_allocated + str_length > StringArenas->total_size )
{
Arena new_arena;
arena_init_from_allocator( & new_arena, Allocator_StringArena, SizePer_StringArena );
if ( array_append( StringArenas, new_arena ) )
fatal( "gen::get_string_allocator: Failed to allocate a new string arena" );
return arena_allocator( StringArenas );
}
return arena_allocator( StringArenas );
}
// Will either make or retrive a code string.
StringCached get_cached_string( StrC str )
{
s32 hash_length = str.Len > kilobytes(1) ? kilobytes(1) : str.Len;
u32 key = crc32( str.Ptr, hash_length );
{
String* result = str_tbl_get( & StaticData::StringMap, key );
if ( result )
return * result;
}
String result = String::make( get_string_allocator( str.Len ), str );
str_tbl_set( & StaticData::StringMap, key, result );
return result;
}
/*
Used internally to retireve a Code object form the CodePool.
*/
Code make_code()
{
using namespace StaticData;
AllocatorInfo allocator = { nullptr, nullptr };
s32 index = 0;
s32 left = array_count( CodePools );
do
{
if ( CodePools[index].free_list != nullptr )
{
allocator = zpl::pool_allocator( & CodePools[index] );
break;
}
index++;
}
while ( left--, left );
if ( allocator.data == nullptr )
{
Pool code_pool;
pool_init( & code_pool, Allocator_CodePool, CodePool_NumBlocks, sizeof(AST) );
if ( code_pool.physical_start == nullptr )
fatal( "gen::make_code: Failed to allocate a new code pool - CodePool allcoator returned nullptr." );
if ( ! array_append( CodePools, code_pool ) )
fatal( "gen::make_code: Failed to allocate a new code pool - CodePools failed to append new pool." );
allocator = pool_allocator( CodePools );
}
Code result { rcast( AST*, alloc( allocator, sizeof(AST) )) };
result->Content = { nullptr };
result->Parent = nullptr;
result->Name = { nullptr };
result->Type = ECode::Invalid;
result->Op = EOperator::Invalid;
result->ModuleFlags = ModuleFlag::Invalid;
result->ParentAccess = AccessSpec::Invalid;
result->StaticIndex = 0;
result->DynamicEntries = false;
return result;
}
Array(AST*) make_code_entries()
{
using namespace StaticData;
AllocatorInfo allocator = { nullptr, nullptr };
s32 index = 0;
s32 left = array_count( CodeEntriesArenas );
do
{
if ( arena_size_remaining( & CodeEntriesArenas[index], ZPL_DEFAULT_MEMORY_ALIGNMENT) >= InitSize_CodeEntiresArray )
allocator = arena_allocator( & CodeEntriesArenas[index] );
index++;
}
while( left--, left );
if ( allocator.data == nullptr )
{
Arena arena;
arena_init_from_allocator( & arena, Allocator_CodeEntriesArena, SizePer_CodeEntriresArena );
if ( arena.physical_start == nullptr )
fatal( "gen::make_code: Failed to allocate a new code entries arena - CodeEntriesArena allcoator returned nullptr." );
allocator = arena_allocator( & arena );
array_append( CodeEntriesArenas, arena );
}
Array(AST*) entry_array;
array_init( entry_array, allocator );
return entry_array;
}
enum class OpValidateResult : u32
{
Fail,
Global,
Member
};
inline
OpValidateResult operator__validate( OperatorT op, Code params_code, Code ret_type, Code specifier )
{
using namespace EOperator;
if ( op == EOperator::Invalid )
{
log_failure("gen::def_operator: op cannot be invalid");
return OpValidateResult::Fail;
}
#pragma region Helper Macros
# define check_params() \
if ( ! params_code ) \
{ \
log_failure("gen::def_operator: params is null and operator%s requires it", to_str(op)); \
return OpValidateResult::Fail; \
} \
if ( params_code->Type != ECode::Parameters ) \
{ \
log_failure("gen::def_operator: params is not of Parameters type - %s", params_code->debug_str()); \
return OpValidateResult::Fail; \
}
# define check_param_eq_ret() \
if ( ! is_member_symbol && params_code->param_type() != ret_type ) \
{ \
log_failure("gen_def_operator: operator%s requires first parameter to equal return type\n" \
"param types: %s\n" \
"return type: %s", \
to_str(op), \
params_code->debug_str(), \
ret_type->debug_str() \
); \
return OpValidateResult::Fail; \
}
#pragma endregion Helper Macros
if ( ! ret_type )
{
log_failure("gen::def_operator: ret_type is null but is required by operator%s", to_str(op));
}
if ( ret_type->Type != ECode::Typename )
{
log_failure("gen::def_operator: ret_type is not of typename type - %s", ret_type->debug_str());
return OpValidateResult::Fail;
}
bool is_member_symbol = false;
switch ( op )
{
# define specs( ... ) macro_num_args( __VA_ARGS__ ), __VA_ARGS__
case Assign:
check_params();
if ( params_code->param_count() > 1 )
{
log_failure("gen::def_operator: "
"operator%s does not support non-member definition (more than one parameter provided) - %s",
to_str(op),
params_code->debug_str()
);
return OpValidateResult::Fail;
}
is_member_symbol = true;
break;
case Assign_Add:
case Assign_Subtract:
case Assgin_Multiply:
case Assgin_Divide:
case Assgin_Modulo:
case Assgin_BAnd:
case Assgin_BOr:
case Assign_BXOr:
case Assign_LShift:
case Assign_RShift:
check_params();
if ( params_code->param_count() == 1 )
is_member_symbol = true;
else
check_param_eq_ret();
if (params_code->param_count() > 2 )
{
log_failure("gen::def_operator: operator%s may not be defined with more than two parametes - param count; %d\n%s"
, to_str(op)
, params_code->param_count()
, params_code->debug_str()
);
return OpValidateResult::Fail;
}
break;
case Increment:
case Decrement:
// If its not set, it just means its a prefix member op.
if ( params_code )
{
if ( params_code->Type != ECode::Parameters )
{
log_failure("gen::def_operator: operator%s params code provided is not of Parameters type - %s"
, to_str(op)
, params_code->debug_str()
);
return OpValidateResult::Fail;
}
switch ( params_code->param_count() )
{
case 1:
if ( params_code->param_type()->is_equal( type_ns(int) ) )
is_member_symbol = true;
else
check_param_eq_ret();
break;
case 2:
check_param_eq_ret();
if ( ! params_code->get_param(1)->is_equal( type_ns(int) ) )
{
log_failure("gen::def_operator: "
"operator%s requires second parameter of non-member definition to be int for post-decrement",
to_str(op)
);
return OpValidateResult::Fail;
}
break;
default:
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-2"
, to_str(op)
, params_code->param_count()
);
return OpValidateResult::Fail;
}
}
break;
case Unary_Plus:
case Unary_Minus:
case BNot:
if ( ! params_code )
is_member_symbol = true;
else
{
if ( params_code->Type != ECode::Parameters )
{
log_failure("gen::def_operator: params is not of Parameters type - %s", params_code->debug_str());
return OpValidateResult::Fail;
}
if ( params_code->param_type()->is_equal( ret_type ) )
{
log_failure("gen::def_operator: "
"operator%s is non-member symbol yet first paramter does not equal return type\n"
"param type: %s\n"
"return type: %s\n"
, params_code->debug_str()
, ret_type->debug_str()
);
return OpValidateResult::Fail;
}
if ( params_code->param_count() > 1 )
{
log_failure("gen::def_operator: operator%s may not have more than one parameter - param count: %d"
, to_str(op)
, params_code->param_count()
);
return OpValidateResult::Fail;
}
}
break;
case Add:
case Subtract:
case Multiply:
case Divide:
case Modulo:
case BAnd:
case BOr:
case BXOr:
case LShift:
case RShift:
check_params();
switch ( params_code->param_count() )
{
case 1:
is_member_symbol = true;
break;
case 2:
if ( ! params_code->param_type()->is_equal( ret_type ) )
{
log_failure("gen::def_operator: "
"operator%s is non-member symbol yet first paramter does not equal return type\n"
"param type: %s\n"
"return type: %s\n"
, params_code->debug_str()
, ret_type->debug_str()
);
return OpValidateResult::Fail;
}
break;
default:
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-2"
, to_str(op)
, params_code->param_count()
);
return OpValidateResult::Fail;
}
break;
case LNot:
if ( ! params_code )
is_member_symbol = true;
else
{
if ( params_code->Type != ECode::Parameters )
{
log_failure("gen::def_operator: params is not of Parameters type - %s", params_code->debug_str());
return OpValidateResult::Fail;
}
if ( params_code->param_count() != 1 )
{
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-1"
, to_str(op)
, params_code->param_count()
);
return OpValidateResult::Fail;
}
}
if ( ! ret_type->is_equal( type_ns(bool) ))
{
log_failure("gen::def_operator: operator%s return type must be of type bool - %s"
, to_str(op)
, ret_type->debug_str()
);
return OpValidateResult::Fail;
}
break;
case LAnd:
case LOr:
case Equals:
case NotEquals:
case Lesser:
case Greater:
case LesserEqual:
case GreaterEqual:
check_params();
switch ( params_code->param_count() )
{
case 1:
is_member_symbol = true;
break;
case 2:
break;
default:
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 1-2"
, to_str(op)
, params_code->param_count()
);
return OpValidateResult::Fail;
}
break;
case Indirection:
case AddressOf:
case MemberOfPointer:
if ( params_code && params_code->param_count() > 1)
{
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-1"
, to_str(op)
, params_code->param_count()
);
return OpValidateResult::Fail;
}
else
{
is_member_symbol = true;
}
break;
case PtrToMemOfPtr:
if ( params_code )
{
log_failure("gen::def_operator: operator%s expects no paramters - %s", to_str(op), params_code->debug_str());
return OpValidateResult::Fail;
}
break;
case Subscript:
case FunctionCall:
case Comma:
check_params();
break;
# undef specs
}
return is_member_symbol ? OpValidateResult::Member : OpValidateResult::Global;
# undef check_params
# undef check_ret_type
# undef check_param_eq_ret
}
void set_allocator_data_arrays( AllocatorInfo allocator )
{
StaticData::Allocator_DataArrays = allocator;
}
void set_allocator_code_pool( AllocatorInfo allocator )
{
StaticData::Allocator_CodePool = allocator;
}
void set_allocator_code_entries_arena( AllocatorInfo allocator )
{
StaticData::Allocator_CodeEntriesArena = allocator;
}
void set_allocator_string_arena( AllocatorInfo allocator )
{
StaticData::Allocator_StringArena = allocator;
}
void set_allocator_string_table( AllocatorInfo allocator )
{
StaticData::Allocator_StringArena = allocator;
}
#pragma region Helper Marcos
// This snippet is used in nearly all the functions.
# define name_check( Context_, Name_ ) \
{ \
if ( Name_.Len <= 0 ) \
{ \
log_failure( "gen::" txt(Context_) ": Invalid name length provided - %d", Name_.Len ); \
return Code::Invalid; \
} \
\
if ( Name_.Ptr == nullptr ) \
{ \
log_failure( "gen::" txt(Context_) ": name is null" ); \
return Code::Invalid; \
} \
}
# define null_check( Context_, Code_ ) \
if ( ! Code_ ) \
{ \
log_failure( "gen::" txt(Context_) ": " txt(Code_) " provided is null" ); \
return Code::Invalid; \
}
# define null_or_invalid_check( Context_, Code_ ) \
{ \
if ( ! Code_ ) \
{ \
log_failure( "gen::" txt(Context_) ": " txt(Code_) " provided is null" ); \
return Code::Invalid; \
} \
\
if ( Code_->is_invalid() ) \
{ \
log_failure("gen::" txt(Context_) ": " txt(Code_) " provided is invalid" ); \
return Code::Invalid; \
} \
}
# define not_implemented( Context_ ) \
log_failure( "gen::%s: This function is not implemented" ); \
return Code::Invalid;
#pragma endregion Helper Marcos
#pragma region Upfront Constructors
/*
The implementaiton of the upfront constructors involves bascially doing three things:
* Validate the arguments given to construct the intended type of AST is valid.
* Construct said AST type.
* Lock the AST (set to readonly) and return the valid object.
If any of the validation fails, it triggers a call to log_failure with as much info the give the user so that they can hopefully
identify the issue without having to debug too much (at least they can debug though...)
The largest of the functions is related to operator overload definitions.
The library validates a good protion of their form and thus the argument processing for is quite a bit.
*/
Code def_attributes( StrC content )
{
if ( content.Len <= 0 || content.Ptr == nullptr )
{
log_failure( "gen::def_attributes: Invalid attributes provided" );
return Code::Invalid;
}
Code
result = make_code();
result->Type = ECode::Attributes;
result->Name = get_cached_string( content );
result->Content = result->Name;
return result;
}
Code def_comment( StrC content )
{
if ( content.Len <= 0 || content.Ptr == nullptr )
{
log_failure( "gen::def_comment: Invalid comment provided:" );
return Code::Invalid;
}
Code
result = make_code();
result->Type = ECode::Comment;
result->Name = get_cached_string( content );
result->Content = result->Name;
return result;
}
Code def_class( StrC name
, Code body
, Code parent, AccessSpec parent_access
, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_class, name );
if ( attributes && attributes->Type != Attributes )
{
log_failure( "gen::def_class: attributes was not a 'Attributes' type: %s", attributes->debug_str() );
return Code::Invalid;
}
if ( parent && (parent->Type != Class || parent->Type != Struct || parent->Type != Typename || parent->Type != Untyped) )
{
log_failure( "gen::def_class: parent provided is not type 'Class', 'Struct', 'Typeanme', or 'Untyped': %s", parent->debug_str() );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Class_Body:
case Untyped:
break;
default:
log_failure("gen::def_class: body must be either of Class_Body or Untyped type - %s", body->debug_str());
return Code::Invalid;
}
result->Type = Class;
result->add_entry( body );
}
else
{
result->Type = Class_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( parent )
{
result->ParentAccess = parent_access;
result->add_entry( parent );
}
return result;
}
Code def_enum( StrC name
, Code body, Code type
, EnumT specifier, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_enum, name );
if ( type && type->Type != Typename )
{
log_failure( "gen::def_enum: enum underlying type provided was not of type Typename: %s", type->debug_str() );
return Code::Invalid;
}
if ( attributes && attributes->Type != Attributes )
{
log_failure( "gen::def_enum: attributes was not a 'Attributes' type: %s", attributes->debug_str() );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Enum_Body:
case Untyped:
break;
default:
log_failure( "gen::def_enum: body must be of Enum_Body or Untyped type %s", body->debug_str());
return Code::Invalid;
}
result->Type = specifier == EnumClass ?
Enum_Class : Enum;
result->add_entry( body );
}
else
{
result->Type = specifier == EnumClass ?
Enum_Class_Fwd : Enum_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( type )
{
result->add_entry( type );
}
else if ( result->Type != Enum_Class_Fwd && result->Type != Enum_Fwd )
{
log_failure( "gen::def_enum: enum forward declaration must have an underlying type" );
return Code::Invalid;
}
return result;
}
Code def_execution( StrC content )
{
if ( content.Len <= 0 || content.Ptr == nullptr )
{
log_failure( "gen::def_execution: Invalid execution provided" );
return Code::Invalid;
}
Code
result = make_code();
result->Type = ECode::Execution;
result->Name = get_cached_string( content );
result->Content = result->Name;
return result;
}
Code def_extern_link( StrC name, Code body, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_extern_linkage, name );
null_check( def_extern_linkage, body );
if ( body->Type != Extern_Linkage_Body && body->Type != Untyped )
{
log_failure("gen::def_extern_linkage: body is not of extern_linkage or untyped type %s", body->debug_str());
return Code::Invalid;
}
Code
result = make_code();
result->Type = Extern_Linkage;
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->add_entry( body );
return result;
}
Code def_friend( Code declaration )
{
using namespace ECode;
null_check( def_friend, declaration );
switch ( declaration->Type )
{
case Class_Fwd:
case Function_Fwd:
case Operator_Fwd:
case Struct_Fwd:
break;
default:
// Technically friends can have a function body. I will not support it so if you want that add it yourself. - Ed.
log_failure("gen::def_friend: declaration cannot be used with friend, must be a forward declare - %s", declaration->debug_str());
return Code::Invalid;
}
Code
result = make_code();
result->Type = Friend;
result->add_entry( declaration );
return result;
}
Code def_function( StrC name
, Code params , Code ret_type, Code body
, Code specifiers, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_function, name );
if ( params && params->Type != Parameters )
{
log_failure( "gen::def_function: params was not a `Parameters` type: %s", params->debug_str() );
return Code::Invalid;
}
if ( ret_type && ret_type->Type != Typename )
{
log_failure( "gen::def_function: ret_type was not a Typename: %s", ret_type->debug_str() );
return Code::Invalid;
}
if ( specifiers && specifiers->Type != Specifiers )
{
log_failure( "gen::def_function: specifiers was not a `Specifiers` type: %s", specifiers->debug_str() );
return Code::Invalid;
}
if ( attributes && attributes->Type != Attributes )
{
log_failure( "gen::def_function: attributes was not a `Attributes` type: %s", attributes->debug_str() );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Execution:
case Untyped:
break;
default:
{
log_failure("gen::def_function: body must be either of Function_Body, Execution, or Untyped type. %s", body->debug_str());
return Code::Invalid;
}
}
result->Type = Function;
result->add_entry( body );
}
else
{
result->Type = Function_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( specifiers )
result->add_entry( specifiers );
if ( ret_type )
{
result->add_entry( ret_type );
}
else
{
result->add_entry( type_ns(void) );
}
if ( params )
result->add_entry( params );
return result;
}
Code def_include ( StrC path )
{
if ( path.Len <= 0 || path.Ptr == nullptr )
{
log_failure( "gen::def_include: Invalid path provided - %d" );
return Code::Invalid;
}
Code
result = make_code();
result->Type = ECode::Preprocessor_Include;
result->Name = get_cached_string( path );
result->Content = result->Name;
return result;
}
Code def_module( StrC name, ModuleFlag mflags )
{
name_check( def_module, name );
Code
result = make_code();
result->Type = ECode::Module;
result->Name = get_cached_string( name );
result->Content = result->Name;
result->ModuleFlags = mflags;
return result;
}
Code def_namespace( StrC name, Code body, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_namespace, name );
null_check( def_namespace, body );
if ( body->Type != Namespace_Body && body->Type != Untyped )
{
log_failure("gen::def_namespace: body is not of namespace or untyped type %s", body->debug_str());
return Code::Invalid;
}
Code
result = make_code();
result->Type = Namespace;
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->add_entry( body );
return result;
}
Code def_operator( OperatorT op
, Code params_code, Code ret_type, Code body
, Code specifiers, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
if ( attributes && attributes->Type != Attributes )
{
log_failure( "gen::def_operator: Attributes was provided but its not of attributes type: %s", attributes->debug_str() );
return Code::Invalid;
}
if ( specifiers && specifiers->Type != Specifiers )
{
log_failure( "gen::def_operator: Specifiers was provided but its not of specifiers type: %s", specifiers->debug_str() );
return Code::Invalid;
}
OpValidateResult check_result = operator__validate( op, params_code, ret_type, specifiers );
if ( check_result == OpValidateResult::Fail )
{
return Code::Invalid;
}
char const* name = str_fmt_buf( "operator %s", to_str(op) );
Code
result = make_code();
result->Name = get_cached_string( { str_len(name), name } );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Execution:
case Untyped:
break;
default:
{
log_failure("gen::def_operator: body must be either of Function_Body, Execution, or Untyped type. %s", body->debug_str());
return Code::Invalid;
}
}
result->Type = check_result == OpValidateResult::Global ?
Operator : Operator_Member;
result->add_entry( body );
}
else
{
result->Type = check_result == OpValidateResult::Global ?
Operator_Fwd : Operator_Member_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( specifiers )
result->add_entry( specifiers );
result->add_entry( ret_type );
if (params_code)
result->add_entry( params_code );
return result;
}
Code def_param( Code type, StrC name, Code value )
{
using namespace ECode;
name_check( def_param, name );
null_check( def_param, type );
if ( type->Type != Typename )
{
log_failure( "gen::def_param: type is not a typename - %s", type->debug_str() );
return Code::Invalid;
}
if ( value && value->Type != Untyped )
{
log_failure( "gen::def_param: value is not untyped - %s", value->debug_str() );
return Code::Invalid;
}
Code
result = make_code();
result->Type = Parameters;
result->Name = get_cached_string( name );
result->add_entry( type );
if ( value )
result->add_entry( value );
return result;
}
Code def_specifier( SpecifierT spec )
{
Code
result = make_code();
result->Type = ECode::Specifiers;
result->add_specifier( spec );
return result;
}
Code def_struct( StrC name
, Code body
, Code parent, AccessSpec parent_access
, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_struct, name );
if ( attributes && attributes->Type != Attributes )
{
log_failure( "gen::def_struct: attributes was not a `Attributes` type" );
return Code::Invalid;
}
if ( parent && parent->Type != Typename )
{
log_failure( "gen::def_struct: parent was not a `Struct` type" );
return Code::Invalid;
}
if ( body && body->Type != Struct_Body )
{
log_failure( "gen::def_struct: body was not a Struct_Body type" );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
result->Type = Struct;
result->add_entry( body );
}
else
{
result->Type = Struct_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( parent )
{
result->ParentAccess = parent_access;
result->add_entry( parent );
}
return result;
}
Code def_type( StrC name, Code ArrayExpr, Code specifiers )
{
name_check( def_type, name );
if ( specifiers && specifiers->Type != ECode::Specifiers )
{
log_failure( "gen::def_type: specifiers is not of specifiers type - %s", specifiers->debug_str() );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->Type = ECode::Typename;
if ( specifiers )
result->add_entry( specifiers );
if ( ArrayExpr )
result->add_entry( ArrayExpr );
return result;
}
Code def_typedef( StrC name, Code type, Code attributes, ModuleFlag mflags )
{
name_check( def_typedef, name );
null_check( def_typedef, type );
if ( type->Type != ECode::Typename )
{
log_failure( "gen::def_typedef: type was not a Typename" );
return Code::Invalid;
}
// Registering the type.
Code registered_type = def_type( name );
if ( ! registered_type )
{
log_failure( "gen::def_typedef: failed to register type" );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->Type = ECode::Typedef;
result->ModuleFlags = mflags;
result->add_entry( type );
if ( attributes )
result->add_entry( attributes );
return result;
}
Code def_union( StrC name, Code body, Code attributes, ModuleFlag mflags )
{
name_check( def_union, name );
null_check( def_union, body );
if ( body->Type != ECode::Union_Body )
{
log_failure( "gen::def_union: body was not a Union_Body type" );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->Type = ECode::Union;
result->add_entry( body );
if ( attributes )
result->add_entry( attributes );
return result;
}
Code def_using( StrC name, Code type
, Code attributes
, ModuleFlag mflags )
{
name_check( def_using, name );
null_check( def_using, type );
Code register_type = def_type( name );
if ( ! register_type )
{
log_failure( "gen::def_using: failed to register type" );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->Type = ECode::Using;
if ( type )
result->add_entry( type );
if ( attributes )
result->add_entry( attributes );
return result;
}
Code def_using_namespace( StrC name )
{
name_check( def_using_namespace, name );
Code
result = make_code();
result->Name = get_cached_string( name );
result->Content = result->Name;
result->Type = ECode::Using_Namespace;
return result;
}
Code def_variable( Code type, StrC name, Code value
, Code specifiers, Code attributes
, ModuleFlag mflags )
{
name_check( def_variable, name );
null_check( def_variable, type );
if ( attributes && attributes->Type != ECode::Attributes )
{
log_failure( "gen::def_variable: attributes was not a `Attributes` type" );
return Code::Invalid;
}
if ( specifiers && specifiers->Type != ECode::Specifiers )
{
log_failure( "gen::def_variable: specifiers was not a `Specifiers` type" );
return Code::Invalid;
}
if ( type->Type != ECode::Typename )
{
log_failure( "gen::def_variable: type was not a Typename" );
return Code::Invalid;
}
if ( value && value->Type != ECode::Untyped )
{
log_failure( "gen::def_variable: value was not a `Untyped` type" );
return Code::Invalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->Type = ECode::Variable;
result->ModuleFlags = mflags;
result->add_entry( type );
if ( attributes )
result->add_entry( attributes );
if ( specifiers )
result->add_entry( specifiers );
if ( value )
result->add_entry( value );
return result;
}
/*
Body related functions typically follow the same implementation pattern.
Opted to use inline helper macros to get the implementaiton done.
The implementation pattern is as follows:
* Validate a valid parameter num was provided, or code array
def_body_start or def_body_code_array_start( <name of function >)
* Begin the code entry do-while loop, make sure each entry is valid processing its type in the switc
def_body_code_validation_start( <name of function> )
* Define the switch case statements between the macros.
* Add the code entry, finish the closing implemenation for the do-while loop.
def_body_code_validation_end( <name of function> )
* Lock the body AST and return it.
If a function's implementation deviates from the macros then its just writen it out.
*/
#pragma region Helper Macros for def_**_body functions
# define def_body_start( Name_ ) \
using namespace ECode; \
\
if ( num <= 0 ) \
{ \
log_failure("gen::" txt(Name_) ": num cannot be zero or negative"); \
return Code::Invalid; \
}
# define def_body_code_array_start( Name_ ) \
using namespace ECode; \
\
if ( num <= 0 ) \
{ \
log_failure("gen::" txt(Name_) ": num cannot be zero or negative"); \
return Code::Invalid; \
} \
\
if ( codes == nullptr ) \
{ \
log_failure("gen::def_class_body: Provided a null array of codes"); \
return Code::Invalid; \
}
# define def_body_code_validation_start( Name_ ) \
do \
{ \
Code_POD pod = va_arg(va, Code_POD); \
Code entry = pcast(Code, pod); \
\
if ( ! entry ) \
{ \
log_failure("gen::" txt(Name_) ": Provided an null entry"); \
return Code::Invalid; \
} \
\
switch ( entry->Type ) \
{
# define def_body_code_array_validation_start( Name_ ) \
do \
{ \
Code entry = *codes; codes++; \
\
if ( ! entry ) \
{ \
log_failure("gen::" txt(Name_) ": Provided an null entry"); \
return Code::Invalid; \
} \
\
switch ( entry->Type ) \
{
# define def_body_code_validation_end( Name_ ) \
log_failure("gen::" txt(Name_) ": Entry type is not allowed: %s", entry->debug_str() ); \
return Code::Invalid; \
\
default: \
break; \
} \
\
result->add_entry( entry ); \
} \
while ( num--, num > 0 )
#pragma endregion Helper Macros for def_**_body functions
Code def_class_body( s32 num, ... )
{
def_body_start( def_class_body );
Code
result = make_code();
result->Type = Class_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_class_body );
AST_BODY_CLASS_UNALLOWED_TYPES
def_body_code_validation_end( def_class_body );
va_end(va);
return result;
}
Code def_class_body( s32 num, Code* codes )
{
def_body_code_array_start( def_class_body );
Code
result = make_code();
result->Type = Function_Body;
def_body_code_array_validation_start( def_class_body );
AST_BODY_CLASS_UNALLOWED_TYPES
def_body_code_validation_end( def_class_body );
return result;
}
Code def_enum_body( s32 num, ... )
{
def_body_start( def_enum_body );
Code
result = make_code();
result->Type = Enum_Body;
va_list va;
va_start(va, num);
do
{
Code_POD pod = va_arg(va, Code_POD);
Code entry = pcast(Code, pod);
if ( ! entry )
{
log_failure("gen::def_enum_body: Provided a null entry");
return Code::Invalid;
}
if ( entry->Type != Untyped )
{
log_failure("gen::def_enum_body: Entry type is not allowed - %s. Must be of untyped type.", entry->debug_str() ); \
return Code::Invalid;
}
result->add_entry( entry );
}
while ( num--, num > 0 );
va_end(va);
return result;
}
Code def_enum_body( s32 num, Code* codes )
{
def_body_code_array_start( def_enum_body );
Code
result = make_code();
result->Type = Enum_Body;
do
{
Code entry = *codes;
if ( ! entry )
{
log_failure("gen::def_enum_body: Provided a null entry");
return Code::Invalid;
}
if ( entry->Type != Untyped )
{
log_failure("gen::def_enum_body: Entry type is not allowed: %s", entry->debug_str() ); \
return Code::Invalid;
}
result->add_entry( entry );
}
while ( codes++, num--, num > 0 );
return result;
}
Code def_export_body( s32 num, ... )
{
def_body_start( def_export_body );
Code
result = make_code();
result->Type = Export_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_export_body );
AST_BODY_EXPORT_UNALLOWED_TYPES
def_body_code_validation_end( def_export_body );
va_end(va);
return result;
}
Code def_export_body( s32 num, Code* codes )
{
def_body_code_array_start( def_export_body );
Code
result = make_code();
result->Type = Export_Body;
def_body_code_array_validation_start( def_export_body );
AST_BODY_EXPORT_UNALLOWED_TYPES
def_body_code_validation_end( def_export_body );
return result;
}
Code def_extern_link_body( s32 num, ... )
{
def_body_start( def_extern_linkage_body );
Code
result = make_code();
result->Type = Extern_Linkage_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_extern_linkage_body );
AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES
def_body_code_validation_end( def_extern_linkage_body );
va_end(va);
return result;
}
Code def_extern_link_body( s32 num, Code* codes )
{
def_body_code_array_start( def_extern_linkage_body );
Code
result = make_code();
result->Type = Extern_Linkage_Body;
def_body_code_array_validation_start( def_extern_linkage_body );
AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES
def_body_code_validation_end( def_extern_linkage_body );
return result;
}
Code def_function_body( s32 num, ... )
{
def_body_start( def_function_body );
Code
result = make_code();
result->Type = Function_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_function_body );
AST_BODY_FUNCTION_UNALLOWED_TYPES
def_body_code_validation_end( def_function_body );
va_end(va);
return result;
}
Code def_function_body( s32 num, Code* codes )
{
def_body_code_array_start( def_function_body );
Code
result = make_code();
result->Type = Function_Body;
def_body_code_array_validation_start( def_function_body );
AST_BODY_FUNCTION_UNALLOWED_TYPES
def_body_code_validation_end( def_function_body );
return result;
}
Code def_global_body( s32 num, ... )
{
def_body_start( def_global_body );
Code
result = make_code();
result->Type = Global_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_global_body );
AST_BODY_GLOBAL_UNALLOWED_TYPES
def_body_code_validation_end( def_global_body );
va_end(va);
return result;
}
Code def_global_body( s32 num, Code* codes )
{
def_body_code_array_start( def_global_body );
Code
result = make_code();
result->Type = Global_Body;
def_body_code_array_validation_start( def_global_body );
AST_BODY_GLOBAL_UNALLOWED_TYPES
def_body_code_validation_end( def_global_body );
return result;
}
Code def_namespace_body( s32 num, ... )
{
def_body_start( def_namespace_body );
Code
result = make_code();
result->Type = Namespace_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_namespace_body );
AST_BODY_NAMESPACE_UNALLOWED_TYPES
def_body_code_validation_end( def_namespace_body );
va_end(va);
return result;
}
Code def_namespace_body( s32 num, Code* codes )
{
def_body_code_array_start( def_namespace_body );
Code
result = make_code();
result->Type = Global_Body;
def_body_code_array_validation_start( def_namespace_body );
AST_BODY_NAMESPACE_UNALLOWED_TYPES
def_body_code_validation_end( def_namespace_body );
return result;
}
Code def_params( s32 num, ... )
{
def_body_start( def_params );
va_list va;
va_start(va, num);
Code_POD pod = va_arg(va, Code_POD);
Code param = pcast( Code, pod );
null_check( def_params, param );
if ( param->Type != Parameters )
{
log_failure( "gen::def_params: param %d is not a Parameters", num - num + 1 );
return Code::Invalid;
}
Code result = { param->duplicate() };
while ( -- num )
{
pod = va_arg(va, Code_POD);
param = pcast( Code, pod );
if ( param->Type != Parameters )
{
log_failure( "gen::def_params: param %d is not a Parameters", num - num + 1 );
return Code::Invalid;
}
result->add_entry( param );
}
va_end(va);
return result;
}
Code def_params( s32 num, Code* codes )
{
def_body_code_array_start( def_params );
# define check_current() \
if ( current == nullptr ) \
{ \
log_failure("gen::def_params: Provide a null code in codes array"); \
return Code::Invalid; \
} \
\
if (current->Type != Parameters ) \
{ \
log_failure("gen::def_params: Code in coes array is not of paramter type - %s", current->debug_str() ); \
return Code::Invalid; \
}
Code current = * codes;
check_current();
Code
result = make_code();
result->Name = current->Name;
result->Type = current->Type;
result->add_entry( current->entry( 0 ) );
while( codes++, current = * codes, num--, num > 0 )
{
check_current();
result->add_entry( current );
}
# undef check_current
return result;
}
Code def_specifiers( s32 num, ... )
{
if ( num <= 0 )
{
log_failure("gen::def_specifiers: num cannot be zero or less");
return Code::Invalid;
}
if ( num > AST::ArrSpecs_Cap )
{
log_failure("gen::def_specifiers: num of speciifers to define AST larger than AST specicifier capacity - %d", num);
return Code::Invalid;
}
Code
result = make_code();
result->Type = ECode::Specifiers;
va_list va;
va_start(va, num);
do
{
SpecifierT type = (SpecifierT)va_arg(va, int);
result->add_specifier( type );
}
while ( --num, num );
va_end(va);
return result;
}
Code def_specifiers( s32 num, SpecifierT* specs )
{
if ( num <= 0 )
{
log_failure("gen::def_specifiers: num cannot be zero or less");
return Code::Invalid;
}
if ( num > AST::ArrSpecs_Cap )
{
log_failure("gen::def_specifiers: num of speciifers to define AST larger than AST specicifier capacity - %d", num);
return Code::Invalid;
}
Code
result = make_code();
result->Type = ECode::Specifiers;
s32 idx = 0;
do
{
result->add_specifier( specs[idx] );
idx++;
}
while ( --num, num );
return result;
}
Code def_struct_body( s32 num, ... )
{
def_body_start( def_struct_body );
Code
result = make_code();
result->Type = Struct_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_struct_body );
AST_BODY_STRUCT_UNALLOWED_TYPES
def_body_code_validation_end( def_struct_body );
va_end(va);
return result;
}
Code def_struct_body( s32 num, Code* codes )
{
def_body_code_array_start( def_struct_body );
Code
result = make_code();
result->Type = Struct_Body;
def_body_code_array_validation_start( def_struct_body );
AST_BODY_STRUCT_UNALLOWED_TYPES
def_body_code_validation_end( def_struct_body );
return result;
}
Code def_union_body( s32 num, ... )
{
def_body_start( def_union_body );
Code
result = make_code();
result->Type = Union_Body;
va_list va;
va_start(va, num);
do
{
Code_POD pod = va_arg(va, Code_POD);
Code entry = pcast( Code, pod );
if ( ! entry )
{
log_failure("gen::def_union_body: Provided a null entry");
return Code::Invalid;
}
if ( entry->Type != Untyped && entry->Type != Comment )
{
log_failure("gen::def_union_body: Entry type is not allowed - %s. Must be of untyped type.", entry->debug_str() ); \
return Code::Invalid;
}
result->add_entry( entry );
}
while ( num--, num > 0 );
va_end(va);
return result;
}
Code def_union_body( s32 num, Code* codes )
{
def_body_code_array_start( def_union_body );
Code
result = make_code();
result->Type = Union_Body;
do
{
Code entry = *codes;
if ( ! entry )
{
log_failure("gen::def_union_body: Provided a null entry");
return Code::Invalid;
}
if ( entry->Type != Untyped )
{
log_failure("gen::def_union_body: Entry type is not allowed: %s", entry->debug_str() ); \
return Code::Invalid;
}
result->add_entry( entry );
}
while ( codes++, num--, num > 0 );
return result;
}
# undef name_check
# undef null_check
# undef null_or_invalid_check
#pragma endregion Upfront Constructors
#pragma region Parsing Constructors
#ifdef GEN_FEATURE_PARSING
/*
These constructors are the most implementation intensive other than the edtior or scanner.
*/
namespace Parser
{
/*
This is a simple lexer that focuses on tokenizing only tokens relevant to the library.
It will not be capable of lexing C++ code with unsupported features.
*/
// Angle brackets not supported as they are used for template arguments outside of expressions
// Any angle brackets found will be considered an operator token.
# define Define_TokType \
Entry( Access_Private, "private" ) \
Entry( Access_Protected, "protected" ) \
Entry( Access_Public, "public" ) \
Entry( Access_MemberSymbol, "." ) \
Entry( Access_StaticSymbol, "::") \
Entry( Ampersand, "&" ) \
Entry( Ampersand_DBL, "&&" ) \
Entry( Assign_Classifer, ":" ) \
Entry( BraceCurly_Open, "{" ) \
Entry( BraceCurly_Close, "}" ) \
Entry( BraceSquare_Open, "[" ) \
Entry( BraceSquare_Close, "]" ) \
Entry( Capture_Start, "(" ) \
Entry( Capture_End, ")" ) \
Entry( Comment, "__comment__" ) \
Entry( Char, "__char__" ) \
Entry( Comma, "," ) \
Entry( Decl_Class, "class" ) \
Entry( Decl_Enum, "enum" ) \
Entry( Decl_Extern_Linkage, "extern" ) \
Entry( Decl_Friend, "friend" ) \
Entry( Decl_Module, "module" ) \
Entry( Decl_Namespace, "namespace" ) \
Entry( Decl_Struct, "struct" ) \
Entry( Decl_Typedef, "typedef" ) \
Entry( Decl_Using, "using" ) \
Entry( Decl_Union, "union" ) \
Entry( Identifier, "__SymID__" ) \
Entry( Module_Import, "import" ) \
Entry( Module_Export, "export" ) \
Entry( Number, "number" ) \
Entry( Operator, "operator" ) \
Entry( Spec_Alignas, "alignas" ) \
Entry( Spec_Const, "const" ) \
Entry( Spec_Consteval, "consteval" ) \
Entry( Spec_Constexpr, "constexpr" ) \
Entry( Spec_Constinit, "constinit" ) \
Entry( Spec_Extern, "extern" ) \
Entry( Spec_Inline, "inline" ) \
Entry( Spec_LocalPersist, "local_persist" ) \
Entry( Spec_Mutable, "mutable" ) \
Entry( Spec_Static, "static" ) \
Entry( Spec_ThreadLocal, "thread_local" ) \
Entry( Spec_Volatile, "volatile") \
Entry( Star, "*" ) \
Entry( Statement_End, ";" ) \
Entry( String, "__String__" ) \
Entry( Type_Unsigned, "unsigned" ) \
Entry( Type_Signed, "signed" ) \
Entry( Type_Short, "short" ) \
Entry( Type_Long, "long" )
enum class TokType : u32
{
# define Entry( Name_, Str_ ) Name_,
Define_TokType
# undef Entry
Attr_Keyword,
Num,
Invalid
};
struct Token
{
char const* Text;
sptr Length;
TokType Type;
bool IsAssign;
operator bool()
{
return Text && Length && Type != TokType::Invalid;
}
operator StrC()
{
return { Length, Text };
}
};
inline
TokType get_tok_type( char const* word, s32 length )
{
local_persist
char const* lookup[(u32)TokType::Num] =
{
# define Entry( Name_, Str_ ) Str_,
Define_TokType
# undef Entry
Attribute::Keyword,
};
for ( u32 index = 0; index < (u32)TokType::Num; index++ )
{
if ( str_compare( word, lookup[index], length ) == 0 )
return scast(TokType, index);
}
return TokType::Invalid;
}
inline
char const* str_tok_type( TokType type )
{
local_persist
char const* lookup[(u32)TokType::Num] =
{
# define Entry( Name_, Str_ ) Str_,
Define_TokType
# undef Entry
Attribute::Keyword,
};
return lookup[(u32)type];
}
# undef Define_TokType
inline
bool tok_is_specifier( Token const& tok )
{
return (tok.Type <= TokType::Star && tok.Type >= TokType::Spec_Alignas)
|| tok.Type == TokType::Ampersand
|| tok.Type == TokType::Ampersand_DBL
;
}
inline
bool tok_is_access_specifier( Token const& tok )
{
return tok.Type >= TokType::Access_Private && tok.Type <= TokType::Access_Public;
}
inline
AccessSpec tok_to_access_specifier( Token const& tok )
{
return scast(AccessSpec, tok.Type);
}
Arena LexAllocator;
struct TokArray
{
Array(Token) Arr;
s32 Idx;
inline
bool __eat( TokType type, char const* context )
{
if ( array_count(Arr) - Idx <= 0 )
{
log_failure( "gen::%s: No tokens left", context );
return Code::Invalid;
}
if ( Arr[Idx].Type != type )
{
String token_str = String::make( g_allocator, { Arr[Idx].Length, Arr[Idx].Text } );
log_failure( "gen::%s: expected %s, got %s", context, str_tok_type(type), str_tok_type(Arr[Idx].Type) );
return Code::Invalid;
}
Idx++;
return true;
}
inline
Token& current()
{
return Arr[Idx];
}
};
TokArray lex( StrC content )
{
# define current ( * scanner )
# define move_forward() \
left--; \
scanner++
# define SkipWhitespace() \
while ( left && char_is_space( current ) ) \
{ \
move_forward(); \
}
# define SkipWhitespace_Checked( Context_, Msg_, ... ) \
while ( left && char_is_space( current ) ) \
{ \
move_forward(); \
} \
if ( left <= 0 ) \
{ \
log_failure( "gen::" txt(Context_) ": " Msg_, __VA_ARGS__ ); \
return { 0, nullptr }; \
}
do_once_start
arena_init_from_allocator( & LexAllocator, heap(), megabytes(10) );
if ( LexAllocator.physical_start == nullptr )
{
log_failure( "gen::lex: failed to allocate memory for parsing constructor's lexer");
return { nullptr, 0 };
}
do_once_end
local_persist thread_local
Array(Token) Tokens = nullptr;
s32 left = content.Len -1;
char const* scanner = content.Ptr;
char const* word = scanner;
s32 word_length = 0;
SkipWhitespace();
if ( left <= 0 )
{
log_failure( "gen::lex: no tokens found (only whitespace provided)" );
return { nullptr, 0 };
}
if ( Tokens )
array_clear( Tokens );
array_init_reserve( Tokens, arena_allocator( & LexAllocator), content.Len / 8 );
while (left )
{
Token token = { nullptr, 0, TokType::Invalid, false };
SkipWhitespace();
if ( left <= 0 )
break;
switch ( current )
{
case '.':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Access_MemberSymbol;
if (left)
move_forward();
goto FoundToken;
case '&' :
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Ampersand;
if (left)
move_forward();
if ( current == '&' ) // &&
{
token.Length = 2;
token.Type = TokType::Ampersand_DBL;
if (left)
move_forward();
}
goto FoundToken;
case ':':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Assign_Classifer;
if (left)
move_forward();
if ( current == ':' )
{
move_forward();
token.Type = TokType::Access_StaticSymbol;
token.Length++;
}
goto FoundToken;
case '{':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceCurly_Open;
goto FoundToken;
case '}':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceCurly_Close;
goto FoundToken;
case '[':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceSquare_Open;
if ( left )
{
move_forward();
if ( current == ']' )
{
token.Length = 2;
token.Type = TokType::Operator;
move_forward();
}
}
goto FoundToken;
case ']':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceSquare_Close;
goto FoundToken;
case '(':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Capture_Start;
if ( left )
{
move_forward();
if ( current == ')' )
{
token.Length = 2;
token.Type = TokType::Operator;
move_forward();
}
}
goto FoundToken;
case ')':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Capture_End;
goto FoundToken;
case '\'':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Char;
move_forward();
while ( left && current != '\'' )
{
move_forward();
token.Length++;
}
if ( left )
{
move_forward();
token.Length++;
}
goto FoundToken;
case ',':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Comma;
goto FoundToken;
case '*':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Star;
goto FoundToken;
case ';':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Statement_End;
goto FoundToken;
case '"':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::String;
move_forward();
while ( left )
{
if ( current == '"' )
{
move_forward();
break;
}
if ( current == '\\' )
{
move_forward();
token.Length++;
if ( left )
{
move_forward();
token.Length++;
}
continue;
}
move_forward();
token.Length++;
}
goto FoundToken;
// All other operators we just label as an operator and move forward.
case '=':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
token.IsAssign = true;
if (left)
move_forward();
goto FoundToken;
case '+':
case '%':
case '^':
case '~':
case '!':
case '<':
case '>':
case '|':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
if (left)
move_forward();
if ( current == '=' )
{
token.Length++;
token.IsAssign = true;
if (left)
move_forward();
}
else while ( left && current == *(scanner - 1) && token.Length < 3 )
{
token.Length++;
if (left)
move_forward();
}
goto FoundToken;
// Dash is unfortunatlly a bit more complicated...
case '-':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
if ( left )
{
move_forward();
if ( current == '>' )
{
token.Length++;
move_forward();
if ( current == '*' )
{
token.Length++;
move_forward();
}
}
else if ( current == '=' )
{
token.Length++;
token.IsAssign = true;
if (left)
move_forward();
}
else while ( left && current == *(scanner - 1) && token.Length < 3 )
{
token.Length++;
if (left)
move_forward();
}
}
goto FoundToken;
case '/':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
if ( left )
{
move_forward();
if ( current == '/' )
{
token.Type = TokType::Comment;
move_forward();
token.Text = scanner;
token.Length = 0;
while ( left && current != '\n' )
{
move_forward();
token.Length++;
}
}
else if ( current == '*' )
{
token.Type = TokType::Comment;
move_forward();
token.Text = scanner;
token.Length = 0;
while ( left && ( current != '*' && *(scanner + 1) != '/' ) )
{
move_forward();
token.Length++;
}
move_forward();
move_forward();
}
}
goto FoundToken;
}
if ( char_is_alpha( current ) || current == '_' )
{
token.Text = scanner;
token.Length = 1;
move_forward();
while ( left && ( char_is_alphanumeric(current) || current == '_' ) )
{
move_forward();
token.Length++;
}
goto FoundToken;
}
else
{
String context_str = String::fmt_buf( g_allocator, "%s", scanner, min( 100, left ) );
log_failure( "Failed to lex token %s", context_str );
// Skip to next whitespace since we can't know if anything else is valid until then.
while ( left && ! char_is_space( current ) )
{
move_forward();
}
}
FoundToken:
if ( token.Type != TokType::Invalid )
{
array_append( Tokens, token );
if (left)
move_forward();
continue;
}
TokType type = get_tok_type( token.Text, token.Length );
if ( type == TokType::Invalid)
{
// Its most likely an identifier...
type = TokType::Identifier;
}
token.Type = type;
array_append( Tokens, token );
}
if ( array_count(Tokens) == 0 )
{
log_failure( "Failed to lex any tokens" );
return { nullptr, 0 };
}
return { Tokens, 0 };
# undef current
# undef move_forward
# undef SkipWhitespace
# undef SkipWhitespace_Checked
}
}
#pragma region Helper Macros
# define check_parse_args( func, def ) \
if ( def.Len <= 0 ) \
{ \
log_failure( "gen::" txt(func) ": length must greater than 0" ); \
return Code::Invalid; \
} \
if ( def.Ptr == nullptr ) \
{ \
log_failure( "gen::" txt(func) ": def was null" ); \
return Code::Invalid; \
}
# define currtok toks.current()
# define eat( Type_ ) toks.__eat( Type_, context )
# define left ( array_count(toks.Arr) - toks.Idx )
# define check( Type_ ) ( left && currtok.Type == Type_ )
#pragma endregion Helper Macros
Code parse_class_struct_body( Parser::TokArray& toks, char const* context );
Code parse_function_body ( Parser::TokArray& toks, char const* context );
Code parse_global_nspace ( Parser::TokArray& toks, char const* context );
Code parse_class ( Parser::TokArray& toks, char const* context );
Code parse_enum ( Parser::TokArray& toks, char const* context );
Code parse_export_body ( Parser::TokArray& toks, char const* context );
Code parse_exten_link ( Parser::TokArray& toks, char const* context );
Code parse_friend ( Parser::TokArray& toks, char const* context );
Code parse_function ( Parser::TokArray& toks, char const* context );
Code parse_struct ( Parser::TokArray& toks, char const* context );
Code parse_variable ( Parser::TokArray& toks, char const* context );
Code parse_type ( Parser::TokArray& toks, char const* context );
Code parse_typedef ( Parser::TokArray& toks, char const* context );
Code parse_union ( Parser::TokArray& toks, char const* context );
Code parse_using ( Parser::TokArray& toks, char const* context );
inline
Code parse_array_decl( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
if ( check( TokType::BraceSquare_Open ) )
{
eat( TokType::BraceSquare_Open );
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of typedef definition ( '[]' scope started )", txt(parse_typedef) );
return Code::Invalid;
}
if ( currtok.Type == TokType::BraceSquare_Close )
{
log_failure( "%s: Error, empty array expression in typedef definition", txt(parse_typedef) );
return Code::Invalid;
}
Token untyped_tok = currtok;
while ( left && currtok.Type != TokType::BraceSquare_Close )
{
untyped_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)untyped_tok.Text;
}
Code array_expr = untyped_str( untyped_tok );
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of type definition, expected ]", txt(parse_typedef) );
return Code::Invalid;
}
if ( currtok.Type != TokType::BraceSquare_Close )
{
log_failure( "%s: Error, expected ] in type definition, not %s", txt(parse_typedef), str_tok_type( currtok.Type ) );
return Code::Invalid;
}
eat( TokType::BraceSquare_Close );
return array_expr;
}
return Code::Invalid;
}
inline
Parser::Token parse_identifier( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token name = currtok;
eat( TokType::Identifier );
while ( left && currtok.Type == TokType::Access_StaticSymbol )
{
eat( TokType::Access_StaticSymbol );
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of type definition, expected identifier", context );
return { nullptr, 0, TokType::Invalid };
}
if ( currtok.Type != TokType::Identifier )
{
log_failure( "%s: Error, expected identifier in type definition, not %s", context, str_tok_type( currtok.Type ) );
return { nullptr, 0, TokType::Invalid };
}
name.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)name.Text;
eat( TokType::Identifier );
}
return name;
}
Code parse_params( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::Capture_Start );
if ( check(TokType::Capture_End) )
{
eat( TokType::Capture_End );
return { nullptr };
}
Code
result = make_code();
result->Type = Parameters;
while ( left && currtok.Type != TokType::Capture_End)
{
Code type = { nullptr };
Code value = { nullptr };
type = parse_type( toks, context );
if ( type == Code::Invalid )
return Code::Invalid;
Token name = currtok;
eat( TokType::Identifier );
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token value_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::%s: Expected value after assignment operator", context );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
value_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)value_tok.Text;
eat( currtok.Type );
}
value = parse_type( toks, context );
}
Code
param = make_code();
param->Type = Parameters;
param->Name = get_cached_string( name );
param->add_entry( type );
if ( value )
param->add_entry( value );
result->add_entry( param );
eat( TokType::Comma );
}
eat( TokType::Capture_End );
return result;
# undef context
}
Code parse_variable_assignment( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Code expr = Code::Invalid;
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token expr_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::parse_variable: expected expression after assignment operator" );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
expr_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)expr_tok.Text;
eat( currtok.Type );
}
expr = untyped_str( expr_tok );
}
return expr;
}
Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char const* context )
{
using namespace Parser;
if ( which != TokType::Decl_Class && which != TokType::Decl_Struct )
{
log_failure( "%s: Error, expected class or struct, not %s", context, str_tok_type( which ) );
return Code::Invalid;
}
Token name { nullptr, 0, TokType::Invalid };
Code parent = { nullptr };
Code body = { nullptr };
Code attributes = { nullptr };
ModuleFlag mflags = ModuleFlag::None;
Code result = Code::Invalid;
// TODO: Parse module specifiers
eat( which );
// TODO: Parse attributes
name = parse_identifier( toks, context );
AccessSpec access = AccessSpec::Invalid;
Token parent_tok = { nullptr, 0, TokType::Invalid };
if ( check( TokType::Assign_Classifer ) )
{
eat( TokType::Assign_Classifer );
if ( tok_is_access_specifier( currtok ) )
{
access = tok_to_access_specifier( currtok );
}
parent_tok = parse_identifier( toks, context );
}
if ( check( TokType::BraceCurly_Open ) )
{
body = parse_class_struct_body( toks, context );
}
eat( TokType::Statement_End );
if ( parent_tok )
parent = def_type( parent_tok );
if ( which == TokType::Decl_Class )
result = def_class( name, body, parent, access
// TODO: Set these up later
, NoCode // Attributes
, ModuleFlag::None
);
else
result = def_struct( name, body, parent, access
// TODO: Set these up later
, NoCode // Attributes
, ModuleFlag::None
);
return result;
}
Code parse_class_struct_body( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::BraceCurly_Open );
Code
result = make_code();
result->Type = Class_Body;
while ( left && currtok.Type != TokType::BraceCurly_Close )
{
Code member = Code::Invalid;
switch ( currtok.Type )
{
case TokType::Comment:
member = def_comment( currtok );
eat( TokType::Comment );
break;
case TokType::Access_Public:
member = access_public;
eat( TokType::Access_Public );
break;
case TokType::Access_Protected:
member = access_protected;
eat( TokType::Access_Protected );
break;
case TokType::Access_Private:
member = access_private;
eat( TokType::Access_Private );
break;
case TokType::Decl_Class:
member = parse_class( toks, context );
break;
case TokType::Decl_Enum:
member = parse_enum( toks, context );
break;
case TokType::Decl_Friend:
member = parse_friend( toks, context );
break;
case TokType::Decl_Struct:
member = parse_struct( toks, context );
break;
case TokType::Decl_Typedef:
member = parse_typedef( toks, context );
break;
case TokType::Decl_Union:
member = parse_variable( toks, context );
break;
case TokType::Decl_Using:
member = parse_using( toks, context );
break;
case TokType::Spec_Consteval:
case TokType::Spec_Constexpr:
case TokType::Spec_Constinit:
case TokType::Spec_Inline:
case TokType::Spec_Static:
case TokType::Spec_ThreadLocal:
case TokType::Spec_Volatile:
{
Code specifiers = Code::Invalid;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Constexpr:
case ESpecifier::Constinit:
case ESpecifier::External_Linkage:
case ESpecifier::Local_Persist:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Thread_Local:
case ESpecifier::Volatile:
break;
default:
log_failure( "gen::parse_variable: invalid specifier " txt(spec) " for variable" );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
}
case TokType::Identifier:
case TokType::Spec_Const:
case TokType::Type_Unsigned:
case TokType::Type_Signed:
case TokType::Type_Short:
case TokType::Type_Long:
{
Code specifiers = Code::Invalid;
Code type = parse_type( toks, context );
if ( type == Code::Invalid )
return Code::Invalid;
Token name = currtok;
if ( check( TokType::Identifier ) )
{
name = currtok;
}
// Parsing a member function
if ( check( TokType::Capture_Start ))
{
Code params = parse_params( toks, context );
if ( params == Code::Invalid )
return Code::Invalid;
if ( check( TokType::BraceCurly_Open ) )
{
Code body = parse_function_body( toks, context);
if ( body == Code::Invalid )
return Code::Invalid;
Code
member = make_code();
member->Name = get_cached_string( name );
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Untyped:
break;
default:
{
log_failure("gen::def_function: body must be either of Function_Body or Untyped type. %s", body->debug_str());
return Code::Invalid;
}
}
member->Type = Function;
member->add_entry( body );
}
else
{
member->Type = Function_Fwd;
}
member->add_entry( type );
if ( params )
member->add_entry( params );
break;
}
}
// Parsing a member variable
Code array_expr = parse_array_decl( toks, context );
Code expr = parse_variable_assignment( toks, context );
member = make_code();
member->Type = Variable;
member->Name = get_cached_string( name );
member->add_entry( type );
if (array_expr)
type->add_entry( array_expr );
if (specifiers)
member->add_entry( specifiers );
if ( expr )
member->add_entry( expr );
}
if ( member == Code::Invalid )
return Code::Invalid;
result->add_entry( member );
}
eat( currtok.Type );
}
eat( TokType::BraceCurly_Close );
return result;
}
Code parse_function_body( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::BraceCurly_Open );
Code
result = make_code();
result->Type = Function_Body;
while ( left && currtok.Type != TokType::BraceCurly_Close )
{
Code member = Code::Invalid;
switch ( currtok.Type )
{
case TokType::Comment:
member = def_comment( currtok );
eat( TokType::Comment );
break;
case TokType::Decl_Class:
member = parse_class( toks, context );
break;
case TokType::Decl_Enum:
member = parse_enum( toks, context );
break;
case TokType::Decl_Struct:
member = parse_struct( toks, context );
break;
case TokType::Decl_Typedef:
member = parse_typedef( toks, context );
break;
case TokType::Decl_Union:
member = parse_union( toks, context );
break;
case TokType::Decl_Using:
member = parse_using( toks, context );
break;
case TokType::Identifier:
break;
case TokType::Spec_Const:
case TokType::Spec_Constexpr:
case TokType::Spec_Constinit:
case TokType::Spec_Static:
case TokType::Spec_ThreadLocal:
case TokType::Spec_Volatile:
// Can be all kinds of crap
case TokType::Type_Unsigned:
case TokType::Type_Signed:
case TokType::Type_Short:
case TokType::Type_Long:
member = parse_variable( toks, context );
break;
default:
Token untyped_tok = currtok;
while ( left && currtok.Type != TokType::Statement_End )
{
untyped_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)untyped_tok.Text;
eat( currtok.Type );
}
Code member = untyped_str( untyped_tok );
break;
}
if ( member == Code::Invalid )
return Code::Invalid;
result->add_entry( member );
eat( currtok.Type );
}
eat( TokType::BraceCurly_Close );
return result;
}
Code parse_class( Parser::TokArray& toks, char const* context )
{
return parse_class_struct( Parser::TokType::Decl_Class, toks, context );
}
Code parse_class( StrC def )
{
check_parse_args( parse_class, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_class_struct( TokType::Decl_Class, toks, txt(parse_class) );
}
Code parse_enum( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Token name = { nullptr, 0, TokType::Invalid };
Code array_expr = { nullptr };
Code type = { nullptr };
Token body = { nullptr, 0, TokType::Invalid };
char entries_code[ kilobytes(128) ] { 0 };
s32 entries_length = 0;
bool is_enum_class = false;
eat( TokType::Decl_Enum );
if ( currtok.Type == TokType::Decl_Class )
{
eat( TokType::Decl_Class);
is_enum_class = true;
}
// TODO: Parse attributes
if ( currtok.Type != TokType::Identifier )
{
log_failure( "gen::parse_enum: expected identifier for enum name" );
return Code::Invalid;
}
name = currtok;
eat( TokType::Identifier );
if ( currtok.Type == TokType::Assign_Classifer )
{
eat( TokType::Assign_Classifer );
type = parse_type( toks, txt(parse_enum) );
if ( type == Code::Invalid )
return Code::Invalid;
}
if ( currtok.Type == TokType::BraceCurly_Open )
{
eat( TokType::BraceCurly_Open );
body = currtok;
while ( currtok.Type != TokType::BraceCurly_Close )
{
body.Length += currtok.Length;
eat( currtok.Type );
}
eat( TokType::BraceCurly_Close );
}
else
{
eat( TokType::Statement_End );
}
using namespace ECode;
Code
result = make_code();
if ( body.Length )
{
mem_copy( entries_code, body.Text, body.Length );
Code untyped_body = untyped_str( { entries_length, entries_code } );
result->Type = is_enum_class ? Enum_Class : Enum;
result->add_entry( untyped_body );
}
else
{
result->Type = is_enum_class ? Enum_Class_Fwd : Enum_Fwd;
}
result->Name = get_cached_string( name );
if ( type )
result->add_entry( type );
return result;
}
Code parse_enum( StrC def )
{
check_parse_args( parse_enum, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_enum( toks, txt(parse_enum) );
}
Code parse_export_body( Parser::TokArray& toks, char const* context )
{
not_implemented();
return Code::Invalid;
}
Code parse_export_body( StrC def )
{
not_implemented();
return Code::Invalid;
}
Code parse_extern_link( Parser::TokArray& toks, char const* context )
{
not_implemented();
return Code::Invalid;
}
Code parse_extern_link( StrC def )
{
not_implemented();
return Code::Invalid;
}
Code parse_friend( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::Decl_Friend );
Code function = { nullptr };
// Type declaration or return type
Code type = parse_type( toks, txt(parse_friend) );
if ( type == Code::Invalid )
return Code::Invalid;
// Funciton declaration
if ( currtok.Type == TokType::Identifier )
{
// Name
Token name = parse_identifier( toks, txt(parse_friend) );
// Parameter list
Code params = parse_params( toks, txt(parse_friend) );
function = make_code();
function->Type = Function_Fwd;
function->Name = get_cached_string( name );
function->add_entry( type );
if ( params )
function->add_entry( params );
}
eat( TokType::Statement_End );
Code
result = make_code();
result->Type = Friend;
if ( function )
result->add_entry( function );
else
result->add_entry( type );
return result;
}
Code parse_friend( StrC def )
{
check_parse_args( parse_friend, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_friend( toks, txt(parse_friend) );
}
Code parse_functon( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
// TODO: Add attribute parsing support
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Code lang_linkage = Code::Invalid;
Code attributes = Code::Invalid;
Code array_expr = Code::Invalid;
Code specifiers = Code::Invalid;
// TODO: Parse module specifiers
// TODO: Parse attributes
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Constexpr:
case ESpecifier::External_Linkage:
case ESpecifier::Local_Persist:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Thread_Local:
case ESpecifier::Volatile:
break;
default:
log_failure( "gen::parse_variable: invalid specifier " txt(spec) " for variable" );
return Code::Invalid;
}
if ( spec == ESpecifier::External_Linkage )
{
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( TokType::Spec_Extern );
if ( currtok.Type == TokType::String )
{
lang_linkage = untyped_str( currtok );
eat( TokType::String );
}
continue;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
Code ret_type = parse_type( toks, txt(parse_function) );
if ( ret_type == Code::Invalid )
return Code::Invalid;
Token name = parse_identifier( toks, txt(parse_function) );
if ( ! name )
return Code::Invalid;
Code params = parse_params( toks, txt(parse_function) );
Code body = Code::Invalid;
if ( check( TokType::BraceCurly_Open ) )
{
body = parse_function_body( toks, txt(parse_function) );
if ( body == Code::Invalid )
return Code::Invalid;
}
else
{
eat( TokType::Statement_End );
}
using namespace ECode;
Code
result = make_code();
result->Name = get_cached_string( name );
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Untyped:
break;
default:
{
log_failure("gen::def_function: body must be either of Function_Body or Untyped type. %s", body->debug_str());
return Code::Invalid;
}
}
result->Type = Function;
result->add_entry( body );
}
else
{
result->Type = Function_Fwd;
}
if ( specifiers )
result->add_entry( specifiers );
result->add_entry( ret_type );
if ( params )
result->add_entry( params );
return result;
}
Code parse_function( StrC def )
{
using namespace Parser;
check_parse_args( parse_function, def );
Arena mem;
do_once_start
arena_init_from_allocator( & mem, heap(), kilobytes( 10 ) );
do_once_end
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_functon( toks, txt(parse_function) );
}
Code parse_global_body( Parser::TokArray& toks, char const* context )
{
not_implemented();
}
Code parse_global_body( StrC def )
{
using namespace Parser;
using namespace ECode;
Code result = make_code();
result->Type = Global_Body;
// while ( left )
// {
// }
return result;
}
Code parse_namespace( Parser::TokArray& toks, char const* context )
{
not_implemented();
}
Code parse_namespace( StrC def )
{
not_implemented( parse_namespace );
}
Code parse_operator( Parser::TokArray& toks, char const* context )
{
not_implemented();
}
Code parse_operator( StrC def )
{
not_implemented( parse_operator );
}
Code parse_struct( Parser::TokArray& toks, char const* context )
{
return parse_class_struct( Parser::TokType::Decl_Struct, toks, txt(parse_struct) );
}
Code parse_struct( StrC def )
{
check_parse_args( parse_struct, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_class_struct( TokType::Decl_Struct, toks, txt(parse_struct) );
}
Code parse_type( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Token name = { nullptr, 0, TokType::Invalid };
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
if ( spec != ESpecifier::Const )
{
log_failure( "gen::parse_type: Error, invalid specifier used in type definition: %s", currtok.Text );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of type definition", context );
return Code::Invalid;
}
if ( currtok.Type == TokType::Decl_Class
|| currtok.Type == TokType::Decl_Struct )
{
name = currtok;
eat( currtok.Type );
name.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)name.Text;
eat( TokType::Identifier );
}
else if ( currtok.Type >= TokType::Type_Unsigned )
{
name = currtok;
eat( currtok.Type );
while (currtok.Type >= TokType::Type_Unsigned)
{
name.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)name.Text;
eat( currtok.Type );
}
name.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)name.Text;
eat( TokType::Identifier );
}
else
{
name = parse_identifier( toks, context );
if ( ! name )
return Code::Invalid;
}
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
if ( spec != ESpecifier::Const
&& spec != ESpecifier::Ptr
&& spec != ESpecifier::Ref
&& spec != ESpecifier::RValue )
{
log_failure( "%s: Error, invalid specifier used in type definition: %s", context, currtok.Text );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
using namespace ECode;
Code
result = make_code();
result->Type = Typename;
result->Name = get_cached_string( name );
if (num_specifiers)
{
Code specifiers = def_specifiers( num_specifiers, (SpecifierT*)specs_found );
result->add_entry( specifiers );
}
return result;
}
Code parse_type( StrC def )
{
check_parse_args( parse_type, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
Code result = parse_type( toks, txt(parse_type) );
return result;
}
Code parse_typedef( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token name = { nullptr, 0, TokType::Invalid };
Code array_expr = { nullptr };
Code type = { nullptr };
eat( TokType::Decl_Typedef );
type = parse_type( toks, txt(parse_typedef) );
if ( ! check( TokType::Identifier ) )
{
log_failure( "gen::parse_typedef: Error, expected identifier for typedef" );
return Code::Invalid;
}
name = currtok;
eat( TokType::Identifier );
array_expr = parse_array_decl( toks, txt(parse_typedef) );
eat( TokType::Statement_End );
using namespace ECode;
Code
result = make_code();
result->Type = Typedef;
result->Name = get_cached_string( name );
result->add_entry( type );
if ( array_expr && array_expr->Type != Invalid )
type->add_entry( array_expr );
return result;
}
Code parse_typedef( StrC def )
{
check_parse_args( parse_typedef, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_typedef( toks, txt(parse_typedef) );
}
Code parse_union( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
not_implemented();
return Code::Invalid;
}
Code parse_union( s32 length, char const* def )
{
not_implemented( parse_union );
}
Code parse_using( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Token* name = nullptr;
Code array_expr = { nullptr };
Code type = { nullptr };
bool is_namespace = false;
eat( TokType::Decl_Using );
if ( currtok.Type == TokType::Decl_Namespace )
{
is_namespace = true;
eat( TokType::Decl_Namespace );
}
// TODO: Parse Attributes
eat( TokType::Identifier );
if ( currtok.IsAssign )
{
eat( TokType::Operator );
type = parse_type( toks, txt(parse_typedef) );
}
array_expr = parse_array_decl( toks, txt(parse_typedef) );
eat( TokType::Statement_End );
using namespace ECode;
Code
result = make_code();
result->Type = is_namespace ? Using : Using_Namespace;
result->Name = get_cached_string( * name );
result->add_entry( type );
if ( array_expr )
type->add_entry( array_expr );
return result;
}
Code parse_using( StrC def )
{
check_parse_args( parse_using, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_using( toks, txt(parse_using) );
}
Code parse_variable( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token name = { nullptr, 0, TokType::Invalid };
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Code lang_linkage = Code::Invalid;
Code attributes = Code::Invalid;
Code array_expr = Code::Invalid;
Code specifiers = Code::Invalid;
// TODO: Parse module specifiers
// TODO: Parse attributes
if ( check( TokType::BraceSquare_Open ) )
{
eat( TokType::BraceSquare_Open );
// TODO: Need to have a parser for attributes, it gets complicated...
#if 0
Token attris_tok = currtok;
while ( left && currtok.Type != TokType::BraceSquare_Close )
{
eat( TokType::Identifier )
}
#endif
attributes = untyped_str( currtok );
eat( TokType::BraceSquare_Close );
}
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Constexpr:
case ESpecifier::Constinit:
case ESpecifier::External_Linkage:
case ESpecifier::Local_Persist:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Thread_Local:
case ESpecifier::Volatile:
break;
default:
log_failure( "gen::parse_variable: invalid specifier " txt(spec) " for variable" );
return Code::Invalid;
}
if ( spec == ESpecifier::External_Linkage )
{
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( TokType::Spec_Extern );
if ( currtok.Type == TokType::String )
{
lang_linkage = untyped_str( currtok );
eat( TokType::String );
}
continue;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
Code type = parse_type( toks, txt(parse_variable) );
if ( type == Code::Invalid )
return Code::Invalid;
if ( currtok.Type != TokType::Identifier )
{
log_failure( "gen::parse_variable: expected identifier, recieved " txt(currtok.Type) );
return Code::Invalid;
}
name = currtok;
eat( TokType::Identifier );
array_expr = parse_array_decl( toks, txt(parse_variable) );
Code expr = Code::Invalid;
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token expr_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::parse_variable: expected expression after assignment operator" );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
expr_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)expr_tok.Text;
eat( currtok.Type );
}
expr = untyped_str( expr_tok );
}
eat( TokType::Statement_End );
using namespace ECode;
Code result = make_code();
result->Type = Variable;
result->Name = get_cached_string( name );
result->add_entry( type );
if (array_expr)
type->add_entry( array_expr );
if ( attributes )
result->add_entry( attributes );
if (specifiers)
result->add_entry( specifiers );
if ( expr )
result->add_entry( expr );
return result;
}
Code parse_variable( StrC def )
{
check_parse_args( parse_variable, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return Code::Invalid;
return parse_variable( toks, txt(parse_variable) );
}
// Undef helper macros
# undef check_parse_args
# undef curr_tok
# undef eat
# undef left
// End GEN_FEATURE_PARSING
# endif
#pragma endregion Parsing Constructors
#pragma region Untyped Constructors
struct TokEntry
{
char const* Str;
sw Length;
};
ZPL_TABLE( static, TokMap, tokmap_, TokEntry )
sw token_fmt_va( char* buf, uw buf_size, char const* fmt, s32 num_tokens, va_list va )
{
char const* buf_begin = buf;
sw remaining = buf_size;
TokMap tok_map;
{
tokmap_init( & tok_map, g_allocator );
s32 left = num_tokens;
while ( left-- )
{
char const* token = va_arg( va, char const* );
char const* value = va_arg( va, char const* );
TokEntry entry
{
value,
str_len(value, (sw)128)
};
u32 key = crc32( token, str_len(token, 32) );
tokmap_set( & tok_map, key, entry );
}
}
char current = *fmt;
while ( current )
{
sw len = 0;
while ( current && current != '<' && remaining )
{
* buf = * fmt;
buf++;
fmt++;
remaining--;
current = * fmt;
}
if ( current == '<' )
{
char const* scanner = fmt + 1;
s32 tok_len = 0;
while ( *scanner != '>' )
{
tok_len++;
scanner++;
}
char const* token = fmt + 1;
u32 key = crc32( token, tok_len );
TokEntry* value = tokmap_get( & tok_map, key );
if ( value )
{
sw left = value->Length;
char const* str = value->Str;
while ( left-- )
{
* buf = * str;
buf++;
remaining--;
str++;
}
scanner++;
fmt = scanner;
current = * fmt;
continue;
}
* buf = * fmt;
buf++;
fmt++;
remaining--;
current = * fmt;
}
}
tokmap_clear( & tok_map );
sw result = buf_size - remaining;
return result;
}
Code untyped_str( StrC content )
{
Code
result = make_code();
result->Name = get_cached_string( content );
result->Type = ECode::Untyped;
result->Content = result->Name;
return result;
}
Code untyped_fmt( char const* fmt, ...)
{
local_persist thread_local
char buf[ZPL_PRINTF_MAXLEN] = { 0 };
va_list va;
va_start(va, fmt);
sw length = str_fmt_va(buf, ZPL_PRINTF_MAXLEN, fmt, va);
va_end(va);
Code
result = make_code();
result->Name = get_cached_string( { str_len(fmt, MaxNameLength), fmt } );
result->Type = ECode::Untyped;
result->Content = get_cached_string( { length, buf } );
return result;
}
Code untyped_token_fmt( char const* fmt, s32 num_tokens, ... )
{
local_persist thread_local
char buf[ZPL_PRINTF_MAXLEN] = { 0 };
va_list va;
va_start(va, fmt);
sw length = token_fmt_va(buf, ZPL_PRINTF_MAXLEN, fmt, num_tokens, va);
va_end(va);
Code
result = make_code();
result->Name = get_cached_string( { str_len(fmt, MaxNameLength), fmt } );
result->Type = ECode::Untyped;
result->Content = get_cached_string( { length, buf } );
return result;
}
#pragma endregion Untyped Constructors
#pragma endregion Gen Interface
#pragma region Builder
void Builder::print( Code code )
{
Buffer.append_fmt( "%s\n", code.to_string() );
}
void Builder::print_fmt( char const* fmt, ... )
{
sw res;
char buf[ ZPL_PRINTF_MAXLEN ] = { 0 };
va_list va;
va_start( va, fmt );
res = str_fmt_va( buf, count_of( buf ) - 1, fmt, va ) - 1;
va_end( va );
Buffer.append( buf, res );
}
bool Builder::open( char const* path )
{
FileError error = file_open_mode( & File, EFileMode_WRITE, path );
if ( error != EFileError_NONE )
{
log_failure( "gen::File::open - Could not open file: %s", path);
return false;
}
Buffer = String::make( g_allocator, "" );
return true;
}
void Builder::write()
{
bool result = file_write( & File, Buffer, Buffer.length() );
if ( result == false )
log_failure("gen::File::write - Failed to write to file: %s", file_name( & File ) );
file_close( & File );
}
#pragma endregion Builder
#pragma region Editor
#ifdef GEN_FEATURE_EDITOR
#endif
#pragma endregion Editor
#pragma region Scanner
#ifdef GEN_FEATURE_SCANNER
#endif
#pragma endregion Scanner
}
// End: gen_time
#endif
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