Support for interfaces in class/struct.

Interfaces are assumed to have the public access specifier for their content (if its a class definition)

Started to prepare to segement library code into more files (Less scrolling, need for bootstrapping a tailored version + single header support anyway).

Readme.md

@@ -172,7 +172,7 @@ This method is setup where all the metaprogram's code are the within the same fi
   * Lambdas (This naturally means its unsupported)
 * RAII : This needs support for constructors/destructor parsing
   * I haven't gotten around to yet, only useful (to me) for third-party scanning
-* Multiple Inheritance
+* Multiple Inheritance : Working on it..
 
 Keywords kept from "Modern C++":
 

project/Readme.md

@@ -3,16 +3,20 @@
 The core library is contained within `gen.hpp` and `gen.cpp`.
 Things related to the editor and scanner are in their own respective files. (Ex: `gen.scanner.<hpp/cpp>` )
 
+Dependencies are within `gen.dep.<hpp/cpp>`
 
 
 ## gen.hpp
 
 Feature Macros:
 
+* `GEN_DONT_USE_NAMESPACE` : By default, the library is wrapped in a `gen` namespace, this will disable that expose it to the global scope.
 * `GEN_DONT_ENFORCE_GEN_TIME_GUARD` : By default, the library ( gen.hpp/ gen.cpp ) expects the macro `GEN_TIME` to be defined, this disables that.
 * `GEN_ROLL_OWN_DEPENDENCIES` : Optional override so that user may define the dependencies themselves.
 * `GEN_DEFINE_LIBRARY_CORE_CONSTANTS` : Optional typename codes as they are non-standard to C/C++ and not necessary to library usage
 * `GEN_ENFORCE_STRONG_CODE_TYPES` : Enforces casts to filtered code types.
+* `GEN_EXPOSE_BACKEND` : Will expose symbols meant for internal use only.
+* `GEN_Define_Attribute_Tokens` : Allows user to define their own attribute macros for use in parsing.
 
 `GEN_USE_RECURSIVE_AST_DUPLICATION` is available but its not well tested and should not need to be used.  
 If constructing ASTs properly. There should be no modification of ASTs, and thus this would never become an issue.  

project/dependencies/gen.dep.hpp

@@ -1,4 +1,4 @@
-// This file is intended to be included within gen.hpp (There is pragma diagnostic ignores)
+// This file is intended to be included within gen.hpp (There is no pragma diagnostic ignores)
 #pragma once
 
 #pragma region Platform Detection

project/gen.cpp

@@ -4,12 +4,12 @@
 #error Gen.hpp : GEN_TIME not defined
 #endif
 
-#include "gen.push_ignores.inline.hpp"
+#include "helpers/gen.push_ignores.inline.hpp"
 
 //! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
 //! Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
 #ifndef GEN_ROLL_OWN_DEPENDENCIES
-#	include "gen.dep.cpp"
+#	include "dependencies/gen.dep.cpp"
 #endif
 
 #include "gen.hpp"
@@ -478,6 +478,17 @@ String AST::to_string()
 						, ParentType->to_string()
 						, Body->to_string()
 					);
+
+					CodeType interface = Next->cast<CodeType>();
+					if ( interface )
+						result.append("\n");
+
+					while ( interface )
+					{
+						result.append_fmt( ", %s", interface.to_string() );
+
+						interface = interface->Next->cast<CodeType>();
+					}
 				}
 				else
 				{
@@ -902,6 +913,17 @@ String AST::to_string()
 						, ParentType->to_string()
 						, Body->to_string()
 					);
+
+					CodeType interface = Next->cast<CodeType>();
+					if ( interface )
+						result.append("\n");
+
+					while ( interface )
+					{
+						result.append_fmt( ", public %s", interface.to_string() );
+
+						interface = interface->Next->cast<CodeType>();
+					}
 				}
 				else
 				{
@@ -1182,7 +1204,8 @@ bool AST::validate_body()
 #pragma endregion AST
 
 #pragma region Gen Interface
-internal void* Global_Allocator_Proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags )
+internal
+void* Global_Allocator_Proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags )
 {
 	Arena* last = & Global_AllocatorBuckets.back();
 
@@ -1244,7 +1267,8 @@ internal void* Global_Allocator_Proc( void* allocator_data, AllocType type, sw s
 	return nullptr;
 }
 
-internal void define_constants()
+internal
+void define_constants()
 {
 	Code::Global          = make_code();
 	Code::Global->Name    = get_cached_string( txt_StrC("Global Code") );
@@ -2032,7 +2056,8 @@ CodeClass def_class( StrC name
 	, Code           body
 	, CodeType       parent, AccessSpec parent_access
 	, CodeAttributes attributes
-	, ModuleFlag     mflags )
+	, ModuleFlag     mflags
+	, CodeType*      interfaces, s32 num_interfaces	)
 {
 	using namespace ECode;
 
@@ -2085,6 +2110,14 @@ CodeClass def_class( StrC name
 		result->ParentType   = parent;
 	}
 
+	if ( interfaces )
+	{
+		for (s32 idx = 0; idx < num_interfaces; idx++ )
+		{
+			result.add_interface( interfaces[idx] );
+		}
+	}
+
 	return result;
 }
 
@@ -2523,7 +2556,8 @@ CodeStruct def_struct( StrC name
 	, Code           body
 	, CodeType       parent, AccessSpec parent_access
 	, CodeAttributes attributes
-	, ModuleFlag     mflags )
+	, ModuleFlag     mflags
+	, CodeType*      interfaces, s32 num_interfaces )
 {
 	using namespace ECode;
 
@@ -2571,6 +2605,14 @@ CodeStruct def_struct( StrC name
 		result->ParentType   = parent;
 	}
 
+	if ( interfaces )
+	{
+		for (s32 idx = 0; idx < num_interfaces; idx++ )
+		{
+			result.add_interface( interfaces[idx] );
+		}
+	}
+
 	return result;
 }
 
@@ -5162,6 +5204,7 @@ Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char con
 
 	Token name { nullptr, 0, TokType::Invalid };
 
+	AccessSpec     access     = AccessSpec::Default;
 	CodeType       parent     = { nullptr };
 	CodeBody       body       = { nullptr };
 	CodeAttributes attributes = { nullptr };
@@ -5182,8 +5225,9 @@ Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char con
 	if ( check( TokType::Identifier ) )
 		name = parse_identifier( toks, context );
 
-	AccessSpec access     = AccessSpec::Default;
-	Token      parent_tok = { nullptr, 0, TokType::Invalid };
+	local_persist
+	char interface_arr_mem[ kilobytes(4) ] {0};
+	Array<CodeType> interfaces = Array<CodeType>::init_reserve( Arena::init_from_memory(interface_arr_mem, kilobytes(4) ), 4 );
 
 	if ( check( TokType::Assign_Classifer ) )
 	{
@@ -5194,7 +5238,22 @@ Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char con
 			access = tok_to_access_specifier( currtok );
 		}
 
-		parent_tok = parse_identifier( toks, context );
+		Token parent_tok = parse_identifier( toks, context );
+		parent = def_type( parent_tok );
+
+		while ( check(TokType::Comma) )
+		{
+			eat(TokType::Access_Public);
+
+			if ( tok_is_access_specifier( currtok ) )
+			{
+				eat(currtok.Type);
+			}
+
+			Token interface_tok = parse_identifier( toks, context );
+
+			interfaces.append( def_type( interface_tok ) );
+		}
 	}
 
 	if ( check( TokType::BraceCurly_Open ) )
@@ -5204,9 +5263,6 @@ Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char con
 
 	eat( TokType::Statement_End );
 
-	if ( parent_tok )
-		parent = def_type( parent_tok );
-
 	if ( which == TokType::Decl_Class )
 		result = def_class( name, body, parent, access
 			, attributes
@@ -5219,6 +5275,7 @@ Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char con
 			, mflags
 		);
 
+	interfaces.free();
 	return result;
 }
 
@@ -6812,4 +6869,4 @@ void Builder::write()
 
 GEN_NS_END
 
-#include "gen.pop_ignores.inline.hpp"
+#include "helpers/gen.pop_ignores.inline.hpp"

project/gen.hpp

@@ -12,12 +12,12 @@
 #error Gen.hpp : GEN_TIME not defined
 #endif
 
-#include "gen.push_ignores.inline.hpp"
+#include "helpers/gen.push_ignores.inline.hpp"
 
 //! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
 // Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
 #ifndef GEN_ROLL_OWN_DEPENDENCIES
-#	include "gen.dep.hpp"
+#	include "dependencies/gen.dep.hpp"
 #endif
 
 #if defined(GEN_DONT_USE_NAMESPACE) && ! defined(GEN_NS_BEGIN)
@@ -778,7 +778,6 @@ struct CodeBody
 
 Define_CodeType( Attributes );
 Define_CodeType( Comment );
-Define_CodeType( Class );
 Define_CodeType( Enum );
 Define_CodeType( Exec );
 Define_CodeType( Extern );
@@ -789,7 +788,6 @@ Define_CodeType( Module );
 Define_CodeType( Namespace );
 Define_CodeType( Operator );
 Define_CodeType( OpCast );
-Define_CodeType( Struct );
 Define_CodeType( Template );
 Define_CodeType( Type );
 Define_CodeType( Typedef );
@@ -797,6 +795,32 @@ Define_CodeType( Union );
 Define_CodeType( Using );
 Define_CodeType( Var );
 
+struct CodeClass
+{
+	Using_Code( CodeClass );
+
+	void add_interface( CodeType interface );
+
+	AST* raw()
+	{
+		return rcast( AST*, ast );
+	}
+	operator Code()
+	{
+		return * rcast( Code*, this );
+	}
+	AST_Class* operator->()
+	{
+		if ( ast == nullptr )
+		{
+			log_failure("Attempt to dereference a nullptr");
+			return nullptr;
+		}
+		return ast;
+	}
+	AST_Class* ast;
+};
+
 struct CodeParam
 {
 	Using_Code( CodeParam );
@@ -904,6 +928,32 @@ struct CodeSpecifiers
 	AST_Specifiers* ast;
 };
 
+struct CodeStruct
+{
+	Using_Code( CodeStruct );
+
+	void add_interface( CodeType interface );
+
+	AST* raw()
+	{
+		return rcast( AST*, ast );
+	}
+	operator Code()
+	{
+		return * rcast( Code*, this );
+	}
+	AST_Struct* operator->()
+	{
+		if ( ast == nullptr )
+		{
+			log_failure("Attempt to dereference a nullptr");
+			return nullptr;
+		}
+		return ast;
+	}
+	AST_Struct* ast;
+};
+
 #undef Define_CodeType
 #undef Using_Code
 #pragma endregion Code Types
@@ -971,8 +1021,8 @@ struct AST_Class
 			CodeBody        Body;
 		};
 	};
-	Code                    Prev;
-	Code                    Next;
+	CodeType                Last;
+	CodeType                Next;
 	Code                    Parent;
 	StringCached            Name;
 	CodeT                   Type;
@@ -1223,8 +1273,8 @@ struct AST_Struct
 			CodeBody       Body;
 		};
 	};
-	Code                   Prev;
-	Code                   Next;
+	CodeType               Last;
+	CodeType               Next;
 	Code                   Parent;
 	StringCached           Name;
 	CodeT                  Type;
@@ -1407,7 +1457,8 @@ CodeClass def_class( StrC name
 	, Code           body         = NoCode
 	, CodeType       parent       = NoCode, AccessSpec access = AccessSpec::Default
 	, CodeAttributes attributes   = NoCode
-	, ModuleFlag mflags = ModuleFlag::None );
+	, ModuleFlag     mflags       = ModuleFlag::None
+	, CodeType*      interfaces   = nullptr, s32 num_interfaces = 0 );
 
 CodeEnum def_enum( StrC name
 	, Code         body      = NoCode,      CodeType       type       = NoCode
@@ -1441,7 +1492,8 @@ CodeStruct def_struct( StrC name
 	, Code           body       = NoCode
 	, CodeType       parent     = NoCode, AccessSpec access = AccessSpec::Default
 	, CodeAttributes attributes = NoCode
-	, ModuleFlag     mflags     = ModuleFlag::None );
+	, ModuleFlag     mflags     = ModuleFlag::None
+	, CodeType*      interfaces = nullptr, s32 num_interfaces = 0 );
 
 CodeTemplate def_template( CodeParam params, Code definition, ModuleFlag mflags = ModuleFlag::None );
 
@@ -1737,8 +1789,8 @@ Define_AST_Cast( Namespace );
 Define_AST_Cast( Operator );
 Define_AST_Cast( OpCast );
 Define_AST_Cast( Param );
-Define_AST_Cast( Specifiers );
 Define_AST_Cast( Struct );
+Define_AST_Cast( Specifiers );
 Define_AST_Cast( Template );
 Define_AST_Cast( Type );
 Define_AST_Cast( Typedef );
@@ -1779,6 +1831,19 @@ Define_CodeCast( Body);
 #undef Define_CodeCast
 #pragma endregion AST & Code Gen Common
 
+void CodeClass::add_interface( CodeType type )
+{
+	if ( ! ast->Next )
+	{
+		ast->Next = type;
+		ast->Last = ast->Next;
+		return;
+	}
+
+	ast->Next->Next = type;
+	ast->Last       = ast->Next->Next;
+}
+
 void CodeParam::append( CodeParam other )
 {
 	AST* self  = (AST*) ast;
@@ -1828,6 +1893,18 @@ CodeParam& CodeParam::operator ++()
 	return * this;
 }
 
+void CodeStruct::add_interface( CodeType type )
+{
+	if ( ! ast->Next )
+	{
+		ast->Next = type;
+		ast->Last = ast->Next;
+	}
+
+	ast->Next->Next = type;
+	ast->Last       = ast->Next->Next;
+}
+
 CodeBody def_body( CodeT type )
 {
 	switch ( type )
@@ -2030,4 +2107,4 @@ StrC token_fmt_impl( sw num, ... )
 
 GEN_NS_END
 
-#include "gen.pop_ignores.inline.hpp"
+#include "helpers/gen.pop_ignores.inline.hpp"