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/*
gencpp: An attempt at "simple" staged metaprogramming for c/c++.
See Readme.md for more information from the project repository.
Public Address:
https://github.com/Ed94/gencpp
*/
#pragma once
#if ! defined(GEN_DONT_ENFORCE_GEN_TIME_GUARD) && ! defined(GEN_TIME)
#error Gen.hpp : GEN_TIME not defined
#endif
#include "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"
#endif
namespace gen {
#pragma region Types
using LogFailType = sw(*)(char const*, ...);
// By default this library will either crash or exit if an error is detected while generating codes.
// Even if set to not use fatal, fatal will still be used for memory failures as the library is unusable when they occur.
#ifdef GEN_DONT_USE_FATAL
constexpr LogFailType log_failure = log_fmt;
#else
constexpr LogFailType log_failure = fatal;
#endif
namespace ECode
{
# define Define_Types \
Entry( Untyped ) \
Entry( Comment ) \
Entry( Access_Private ) \
Entry( Access_Protected ) \
Entry( Access_Public ) \
Entry( PlatformAttributes ) \
Entry( Class ) \
Entry( Class_Fwd ) \
Entry( Class_Body ) \
Entry( Enum ) \
Entry( Enum_Fwd ) \
Entry( Enum_Body ) \
Entry( Enum_Class ) \
Entry( Enum_Class_Fwd ) \
Entry( Execution ) \
Entry( Export_Body ) \
Entry( Extern_Linkage ) \
Entry( Extern_Linkage_Body ) \
Entry( Friend ) \
Entry( Function ) \
Entry( Function_Fwd ) \
Entry( Function_Body ) \
Entry( Global_Body ) \
Entry( Module ) \
Entry( Namespace ) \
Entry( Namespace_Body ) \
Entry( Operator ) \
Entry( Operator_Fwd ) \
Entry( Operator_Member ) \
Entry( Operator_Member_Fwd ) \
Entry( Operator_Cast ) \
Entry( Operator_Cast_Fwd ) \
Entry( Parameters ) \
Entry( Preprocessor_Include ) \
Entry( Specifiers ) \
Entry( Struct ) \
Entry( Struct_Fwd ) \
Entry( Struct_Body ) \
Entry( Template ) \
Entry( Typedef ) \
Entry( Typename ) \
Entry( Union ) \
Entry( Union_Body) \
Entry( Using ) \
Entry( Using_Namespace ) \
Entry( Variable )
enum Type : u32
{
# define Entry( Type ) Type,
Define_Types
# undef Entry
Num_Types,
Invalid
};
inline
StrC to_str( Type type )
{
static
StrC lookup[Num_Types] = {
# define Entry( Type ) { sizeof(stringize(Type)), stringize(Type) },
Define_Types
# undef Entry
};
return lookup[ type ];
}
# undef Define_Types
}
using CodeT = ECode::Type;
// Used to indicate if enum definitoin is an enum class or regular enum.
enum class EnumT : u8
{
Regular,
Class
};
constexpr EnumT EnumClass = EnumT::Class;
constexpr EnumT EnumRegular = EnumT::Regular;
namespace EOperator
{
# define Define_Operators \
Entry( Assign, = ) \
Entry( Assign_Add, += ) \
Entry( Assign_Subtract, -= ) \
Entry( Assign_Multiply, *= ) \
Entry( Assign_Divide, /= ) \
Entry( Assign_Modulo, %= ) \
Entry( Assign_BAnd, &= ) \
Entry( Assign_BOr, |= ) \
Entry( Assign_BXOr, ^= ) \
Entry( Assign_LShift, <<= ) \
Entry( Assign_RShift, >>= ) \
Entry( Increment, ++ ) \
Entry( Decrement, -- ) \
Entry( Unary_Plus, + ) \
Entry( Unary_Minus, - ) \
Entry( UnaryNot, ! ) \
Entry( Add, + ) \
Entry( Subtract, - ) \
Entry( Multiply, * ) \
Entry( Divide, / ) \
Entry( Modulo, % ) \
Entry( BNot, ~ ) \
Entry( BAnd, & ) \
Entry( BOr, | ) \
Entry( BXOr, ^ ) \
Entry( LShift, << ) \
Entry( RShift, >> ) \
Entry( LAnd, && ) \
Entry( LOr, || ) \
Entry( LEqual, == ) \
Entry( LNot, != ) \
Entry( Lesser, < ) \
Entry( Greater, > ) \
Entry( LesserEqual, <= ) \
Entry( GreaterEqual, >= ) \
Entry( Subscript, [] ) \
Entry( Indirection, * ) \
Entry( AddressOf, & ) \
Entry( MemberOfPointer, -> ) \
Entry( PtrToMemOfPtr, ->* ) \
Entry( FunctionCall, () )
enum Type : u32
{
# define Entry( Type_, Token_ ) Type_,
Define_Operators
# undef Entry
Comma,
Num_Ops,
Invalid
};
inline
char const* to_str( Type op )
{
local_persist
char const* lookup[ Num_Ops ] = {
# define Entry( Type_, Token_ ) stringize(Token_),
Define_Operators
# undef Entry
","
};
return lookup[ op ];
}
# undef Define_Operators
}
using OperatorT = EOperator::Type;
namespace ESpecifier
{
/*
Note: The following are handled separately:
attributes
alignas
*/
# define Define_Specifiers \
Entry( Invalid, INVALID ) \
Entry( Const, const ) \
Entry( Consteval, consteval ) \
Entry( Constexpr, constexpr ) \
Entry( Constinit, constinit ) \
Entry( External_Linkage, extern ) \
Entry( Global, global ) \
Entry( Inline, inline ) \
Entry( Internal_Linkage, internal ) \
Entry( Local_Persist, local_persist ) \
Entry( Mutable, mutable ) \
Entry( Ptr, * ) \
Entry( Ref, & ) \
Entry( Register, register ) \
Entry( RValue, && ) \
Entry( Static, static ) \
Entry( Thread_Local, thread_local ) \
Entry( Volatile, volatile )
enum Type : u32
{
# define Entry( Specifier, Code ) Specifier,
Define_Specifiers
# undef Entry
Num_Specifiers,
};
// Specifier to string
inline
StrC to_str( Type specifier )
{
local_persist
StrC lookup[ Num_Specifiers ] = {
# pragma push_macro( "global" )
# pragma push_macro( "internal" )
# pragma push_macro( "local_persist" )
# undef global
# undef internal
# undef local_persist
# define Entry( Spec_, Code_ ) { sizeof(stringize(Code_)), stringize(Code_) },
Define_Specifiers
# undef Entry
# pragma pop_macro( "global" )
# pragma pop_macro( "internal" )
# pragma pop_macro( "local_persist" )
};
return lookup[ specifier ];
}
inline
Type to_type( StrC str )
{
local_persist
u32 keymap[ Num_Specifiers ];
do_once_start
for ( u32 index = 0; index < Num_Specifiers; index++ )
{
StrC enum_str = to_str( (Type)index );
// We subtract 1 to remove the null terminator
// This is because the tokens lexed are not null terminated.
keymap[index] = crc32( enum_str.Ptr, enum_str.Len - 1);
}
do_once_end
u32 hash = crc32( str.Ptr, str.Len );
for ( u32 index = 0; index < Num_Specifiers; index++ )
{
if ( keymap[index] == hash )
return (Type)index;
}
return Invalid;
}
# undef Define_Specifiers
}
using SpecifierT = ESpecifier::Type;
enum class AccessSpec : u32
{
Default,
Public,
Protected,
Private,
Num_AccessSpec,
Invalid,
};
inline
char const* to_str( AccessSpec type )
{
local_persist
char const* lookup[ (u32)AccessSpec::Num_AccessSpec ] = {
"",
"public",
"protected",
"private",
};
if ( type > AccessSpec::Public )
return "Invalid";
return lookup[ (u32)type ];
}
enum class ModuleFlag : u32
{
None = 0,
Export = bit(0),
Import = bit(1),
// Private = bit(2),
Num_ModuleFlags,
Invalid,
};
ModuleFlag operator|( ModuleFlag A, ModuleFlag B)
{
return (ModuleFlag)( (u32)A | (u32)B );
}
/*
Predefined attributes
Used for the parser constructors to identify non-standard attributes
*/
namespace Attribute
{
#if defined(GEN_SYSTEM_WINDOWS) || defined( __CYGWIN__ )
# define GEN_API_
# define GEN_API_Export_Code __declspec(dllexport)
# define GEN_API_Import_Code __declspec(dllimport)
# define GEN_Attribute_Keyword __declspec
constexpr char const* API_Export = stringize( GEN_API_Export_Code );
constexpr char const* API_Import = stringize( GEN_API_Import_Code );
constexpr char const* Keyword = stringize( GEN_Attribute_Keyword);
#elif GEN_HAS_ATTRIBUTE( visibility ) || GEN_GCC_VERSION_CHECK( 3, 3, 0 )
# define GEN_API_Export_Code __attribute__ ((visibility ("default")))
# define GEN_API_Import_Code __attribute__ ((visibility ("default")))
# define GEN_Attribute_Keyword __attribute__
constexpr char const* API_Export = stringize( GEN_API_Export_Code );
constexpr char const* API_Import = stringize( GEN_API_Import_Code );
constexpr char const* Keyword = stringize( GEN_Attribute_Keyword);
#else
# define GEN_API_Export_Code
# define GEN_API_Import_Code
# define GEN_Attribute_Keyword
constexpr char const* API_Export = "";
constexpr char const* API_Import = "";
constexpr char const* Keyword = "";
#endif
}
#pragma endregion Types
#pragma region Data Structures
// Implements basic string interning. Data structure is based off the ZPL Hashtable.
using StringTable = HashTable<String const>;
// Represents strings cached with the string table.
// Should never be modified, if changed string is desired, cache_string( str ) another.
using StringCached = String const;
struct AST;
struct AST_Body;
struct AST_Attributes;
struct AST_Comment;
struct AST_Class;
struct AST_Enum;
struct AST_Exec;
struct AST_Extern;
struct AST_Include;
struct AST_Friend;
struct AST_Fn;
struct AST_Module;
struct AST_Namespace;
struct AST_Operator;
struct AST_OpCast;
struct AST_Param;
struct AST_Specifier;
struct AST_Struct;
struct AST_Template;
struct AST_Type;
struct AST_Typedef;
struct AST_Union;
struct AST_Using;
struct AST_UsingNamespace;
struct AST_Var;
struct Code;
struct CodeBody;
// These are to offer ease of use and optionally strong type safety for the AST.
struct CodeAttributes;
struct CodeComment;
struct CodeClass;
struct CodeEnum;
struct CodeExec;
struct CodeExtern;
struct CodeInclude;
struct CodeFriend;
struct CodeFn;
struct CodeModule;
struct CodeNamespace;
struct CodeOperator;
struct CodeOpCast;
struct CodeParam;
struct CodeSpecifier;
struct CodeStruct;
struct CodeTemplate;
struct CodeType;
struct CodeTypedef;
struct CodeUnion;
struct CodeUsing;
struct CodeUsingNamespace;
struct CodeVar;
/*
AST* wrapper
- Not constantly have to append the '*' as this is written often..
- Allows for implicit conversion to any of the ASTs (raw or filtered).
*/
struct Code
{
# pragma region Statics
// Used to identify ASTs that should always be duplicated. (Global constant ASTs)
static Code Global;
// Used to identify invalid generated code.
static Code Invalid;
# pragma endregion Statics
#define Using_Code( Typename ) \
char const* debug_str(); \
Code duplicate(); \
bool is_equal( Code other ); \
bool is_valid(); \
void set_global(); \
String to_string(); \
Typename& operator = ( AST* other ); \
Typename& operator = ( Code other ); \
bool operator ==( Code other ); \
bool operator !=( Code other ); \
operator bool() \
{ \
return ast != nullptr; \
}
template< class Type >
Type cast()
{
return * rcast( Type*, this );
}
AST* operator ->()
{
return ast;
}
Code& operator ++();
Code& operator*()
{
return *this;
}
Using_Code( Code );
AST* ast;
#ifdef GEN_ENFORCE_STRONG_CODE_TYPES
# define operator explicit operator
#endif
operator CodeAttributes() const;
operator CodeComment() const;
operator CodeClass() const;
operator CodeExec() const;
operator CodeEnum() const;
operator CodeExtern() const;
operator CodeInclude() const;
operator CodeFriend() const;
operator CodeFn() const;
operator CodeModule() const;
operator CodeNamespace() const;
operator CodeOperator() const;
operator CodeOpCast() const;
operator CodeParam() const;
operator CodeSpecifier() const;
operator CodeStruct() const;
operator CodeTemplate() const;
operator CodeType() const;
operator CodeTypedef() const;
operator CodeUnion() const;
operator CodeUsing() const;
operator CodeUsingNamespace() const;
operator CodeVar() const;
operator CodeBody() const;
#undef operator
};
struct Code_POD
{
AST* ast;
};
static_assert( sizeof(Code) == sizeof(Code_POD), "ERROR: Code is not POD" );
// Desired width of the AST data structure.
constexpr u32 AST_POD_Size = 128;
/*
Simple AST POD with functionality to seralize into C++ syntax.
*/
struct AST
{
# pragma region Member Functions
void append ( AST* other );
char const* debug_str ();
AST* duplicate ();
Code& entry ( u32 idx );
bool has_entries();
bool is_equal ( AST* other );
String to_string ();
char const* type_str();
bool validate_body();
template< class Type >
Type cast()
{
return * this;
}
operator Code();
operator CodeBody();
operator CodeAttributes();
operator CodeComment();
operator CodeClass();
operator CodeEnum();
operator CodeExec();
operator CodeExtern();
operator CodeInclude();
operator CodeFriend();
operator CodeFn();
operator CodeModule();
operator CodeNamespace();
operator CodeOperator();
operator CodeOpCast();
operator CodeParam();
operator CodeSpecifier();
operator CodeStruct();
operator CodeTemplate();
operator CodeType();
operator CodeTypedef();
operator CodeUnion();
operator CodeUsing();
operator CodeUsingNamespace();
operator CodeVar();
# pragma endregion Member Functions
constexpr static
uw ArrSpecs_Cap =
(
AST_POD_Size
- sizeof(AST*) * 3
- sizeof(StringCached)
- sizeof(CodeT)
- sizeof(ModuleFlag)
- sizeof(s32)
)
/ sizeof(SpecifierT) -1; // -1 for 4 extra bytes
union {
struct
{
AST* Attributes; // Class, Enum, Function, Struct, Typedef, Union, Using, Variable
AST* Specs; // Function, Operator, Type symbol, Variable
union {
AST* ParentType; // Class, Struct
AST* ReturnType; // Function, Operator
AST* UnderlyingType; // Enum, Typedef
AST* ValueType; // Parameter, Variable
};
AST* Params; // Function, Operator, Template
union {
AST* ArrExpr; // Type Symbol
AST* Body; // Class, Enum, Function, Namespace, Struct, Union
AST* Declaration; // Friend, Template
AST* Value; // Parameter, Variable
};
};
StringCached Content; // Attributes, Comment, Execution, Include
SpecifierT ArrSpecs[AST::ArrSpecs_Cap]; // Specifiers
};
union {
AST* Prev;
AST* Front;
AST* Last;
};
union {
AST* Next;
AST* Back;
};
AST* Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
union {
OperatorT Op;
AccessSpec ParentAccess;
s32 NumEntries;
};
};
struct AST_POD
{
union {
struct
{
AST* Attributes; // Class, Enum, Function, Struct, Typedef, Union, Using, Variable
AST* Specs; // Function, Operator, Type symbol, Variable
union {
AST* ParentType; // Class, Struct
AST* ReturnType; // Function, Operator
AST* UnderlyingType; // Enum, Typedef
AST* ValueType; // Parameter, Variable
};
AST* Params; // Function, Operator, Template
union {
AST* ArrExpr; // Type Symbol
AST* Body; // Class, Enum, Function, Namespace, Struct, Union
AST* Declaration; // Friend, Template
AST* Value; // Parameter, Variable
};
};
StringCached Content; // Attributes, Comment, Execution, Include
SpecifierT ArrSpecs[AST::ArrSpecs_Cap]; // Specifiers
};
union {
AST* Prev;
AST* Front;
AST* Last;
};
union {
AST* Next;
AST* Back;
};
AST* Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
union {
OperatorT Op;
AccessSpec ParentAccess;
s32 NumEntries;
};
};
// Its intended for the AST to have equivalent size to its POD.
// All extra functionality within the AST namespace should just be syntatic sugar.
static_assert( sizeof(AST) == sizeof(AST_POD), "ERROR: AST IS NOT POD" );
static_assert( sizeof(AST_POD) == AST_POD_Size, "ERROR: AST POD is not size of AST_POD_Size" );
// Used when the its desired when omission is allowed in a definition.
#define NoCode { nullptr }
#define CodeInvalid (* Code::Invalid.ast) // Uses an implicitly overloaded cast from the AST to the desired code type.
#pragma region Code Types
#define Define_CodeType( Typename ) \
struct Code##Typename \
{ \
Using_Code( Code##Typename ); \
AST* raw() \
{ \
return rcast( AST*, ast ); \
} \
operator Code() \
{ \
return * rcast( Code*, this ); \
} \
AST_##Typename* operator->() \
{ \
if ( ast == nullptr ) \
{ \
log_failure("Attempt to dereference a nullptr!"); \
return nullptr; \
} \
return ast; \
} \
AST_##Typename* ast; \
}
struct CodeBody
{
Using_Code( CodeBody );
void append( Code other )
{
raw()->append( other.ast );
}
void append( CodeBody body )
{
for ( Code entry : body )
{
append( entry );
}
}
bool has_entries()
{
return rcast( AST*, ast )->has_entries();
}
AST* raw()
{
return rcast( AST*, ast );
}
AST_Body* operator->()
{
return ast;
}
operator Code()
{
return * rcast( Code*, this );
}
#pragma region Iterator
Code begin()
{
if ( ast )
return { rcast( AST*, ast)->Front };
return { nullptr };
}
Code end()
{
return { rcast(AST*, ast)->Back->Next };
}
#pragma endregion Iterator
AST_Body* ast;
};
Define_CodeType( Attributes );
Define_CodeType( Comment );
Define_CodeType( Class );
Define_CodeType( Enum );
Define_CodeType( Exec );
Define_CodeType( Extern );
Define_CodeType( Include );
Define_CodeType( Friend );
Define_CodeType( Fn );
Define_CodeType( Module );
Define_CodeType( Namespace );
Define_CodeType( Operator );
Define_CodeType( OpCast );
Define_CodeType( Struct );
Define_CodeType( Template );
Define_CodeType( Type );
Define_CodeType(Typedef);
Define_CodeType( Union );
Define_CodeType( Using );
Define_CodeType( Var );
struct CodeParam
{
Using_Code( CodeParam );
void append( CodeParam other );
CodeParam get( s32 idx );
bool has_entries();
AST* raw()
{
return rcast( AST*, ast );
}
AST_Param* operator->()
{
if ( ast == nullptr )
{
log_failure("Attempt to dereference a nullptr!");
return nullptr;
}
return ast;
}
operator Code()
{
return { (AST*)ast };
}
#pragma region Iterator
CodeParam begin()
{
if ( ast )
return { ast };
return { nullptr };
}
CodeParam end()
{
return { (AST_Param*) rcast( AST*, ast)->Last };
}
CodeParam& operator++();
CodeParam operator*()
{
return * this;
}
#pragma endregion Iterator
AST_Param* ast;
};
struct CodeSpecifier
{
Using_Code( CodeSpecifier );
bool append( SpecifierT spec )
{
if ( raw()->NumEntries == AST::ArrSpecs_Cap )
{
log_failure("CodeSpecifier: Attempted to append over %d specifiers to a specifiers AST!", AST::ArrSpecs_Cap );
return false;
}
raw()->ArrSpecs[ raw()->NumEntries ] = spec;
raw()->NumEntries++;
return true;
}
s32 has( SpecifierT spec )
{
for ( s32 idx = 0; idx < raw()->NumEntries; idx++ )
{
if ( raw()->ArrSpecs[ raw()->NumEntries ] == spec )
return idx;
}
return -1;
}
AST* raw()
{
return rcast( AST*, ast );
}
AST_Specifier* operator->()
{
if ( ast == nullptr )
{
log_failure("Attempt to dereference a nullptr!");
return nullptr;
}
return ast;
}
operator Code()
{
return { (AST*) ast };
}
#pragma region Iterator
SpecifierT* begin()
{
if ( ast )
return & raw()->ArrSpecs[0];
return nullptr;
}
SpecifierT* end()
{
return raw()->ArrSpecs + raw()->NumEntries;
}
#pragma endregion Iterator
AST_Specifier* ast;
};
#undef Define_CodeType
#undef Using_Code
#pragma endregion Code Types
#pragma region Filtered ASTs
/*
Show only relevant members of the AST for its type.
AST* fields are replaced with Code types.
- Guards assignemnts to AST* fields to ensure the AST is duplicated if assigned to another parent.
*/
struct AST_Body
{
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
Code Front;
Code Back;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) ];
s32 NumEntries;
};
static_assert( sizeof(AST_Body) == sizeof(AST), "ERROR: AST_Filtered is not the same size as AST");
struct AST_Attributes
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
StringCached Content;
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Attributes) == sizeof(AST), "ERROR: AST_Attributes is not the same size as AST");
struct AST_Comment
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
StringCached Content;
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Comment) == sizeof(AST), "ERROR: AST_Comment is not the same size as AST");
struct AST_Class
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
char _PAD_SPECS_ [ sizeof(AST*) ];
CodeType ParentType;
char _PAD_PARAMS_[ sizeof(AST*) ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
AccessSpec ParentAccess;
};
static_assert( sizeof(AST_Class) == sizeof(AST), "ERROR: AST_Class is not the same size as AST");
struct AST_Enum
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
char _PAD_SPEC_ [ sizeof(AST*) ];
CodeType UnderlyingType;
char _PAD_PARAMS_[ sizeof(AST*) ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Enum) == sizeof(AST), "ERROR: AST_Enum is not the same size as AST");
struct AST_Exec
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
char _PAD_PROPERTIES_[ sizeof(AST*) * 5 ];
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Exec) == sizeof(AST), "ERROR: AST_Exec is not the same size as AST");
struct AST_Extern
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
char _PAD_PROPERTIES_[ sizeof(AST*) * 4 ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Extern) == sizeof(AST), "ERROR: AST_Extern is not the same size as AST");
struct AST_Include
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
StringCached Content;
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Include) == sizeof(AST), "ERROR: AST_Include is not the same size as AST");
struct AST_Friend
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
char _PAD_PROPERTIES_[ sizeof(AST*) * 4 ];
Code Declaration;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Friend) == sizeof(AST), "ERROR: AST_Friend is not the same size as AST");
struct AST_Fn
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
CodeSpecifier Specs;
CodeType ReturnType;
CodeParam Params;
CodeBody Body;
};
};
Code Prev;
Code Parent;
Code Next;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Fn) == sizeof(AST), "ERROR: AST_Fn is not the same size as AST");
struct AST_Module
{
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Module) == sizeof(AST), "ERROR: AST_Module is not the same size as AST");
struct AST_Namespace
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct {
char _PAD_PROPERTIES_[ sizeof(AST*) * 4 ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Namespace) == sizeof(AST), "ERROR: AST_Namespace is not the same size as AST");
struct AST_Operator
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
CodeSpecifier Specs;
CodeType ReturnType;
CodeParam Params;
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
OperatorT Op;
};
static_assert( sizeof(AST_Operator) == sizeof(AST), "ERROR: AST_Operator is not the same size as AST");
struct AST_OpCast
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
char _PAD_PROPERTIES_[ sizeof(AST*) * 2 ];
CodeType ValueType;
char _PAD_PROPERTIES_2_[ sizeof(AST*) ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_OpCast) == sizeof(AST), "ERROR: AST_OpCast is not the same size as AST");
struct AST_Param
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
char _PAD_PROPERTIES_2_[ sizeof(AST*) * 2 ];
CodeType ValueType;
char _PAD_PROPERTIES_[ sizeof(AST*) ];
Code Value;
};
};
CodeParam Last;
CodeParam Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) ];
s32 NumEntries;
};
static_assert( sizeof(AST_Param) == sizeof(AST), "ERROR: AST_Param is not the same size as AST");
struct AST_Specifier
{
SpecifierT ArrSpecs[ AST::ArrSpecs_Cap ];
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) ];
s32 NumEntries;
};
static_assert( sizeof(AST_Specifier) == sizeof(AST), "ERROR: AST_Specifier is not the same size as AST");
struct AST_Struct
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
char _PAD_SPECS_ [ sizeof(AST*) ];
CodeType ParentType;
char _PAD_PARAMS_[ sizeof(AST*) ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
AccessSpec ParentAccess;
};
static_assert( sizeof(AST_Struct) == sizeof(AST), "ERROR: AST_Struct is not the same size as AST");
struct AST_Template
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
char _PAD_PROPERTIES_[ sizeof(AST*) * 3 ];
CodeParam Params;
Code Declaration;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Template) == sizeof(AST), "ERROR: AST_Template is not the same size as AST");
struct AST_Type
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
CodeSpecifier Specs;
char _PAD_PROPERTIES_[ sizeof(AST*) * 2 ];
Code ArrExpr;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
char _PAD_UNUSED_[ sizeof(ModuleFlag) + sizeof(u32) ];
};
static_assert( sizeof(AST_Type) == sizeof(AST), "ERROR: AST_Type is not the same size as AST");
struct AST_Typedef
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
char _PAD_SPECS_ [ sizeof(AST*) ];
Code UnderlyingType;
char _PAD_PROPERTIES_[ sizeof(AST*) * 2 ];
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Typedef) == sizeof(AST), "ERROR: AST_Typedef is not the same size as AST");
struct AST_Union
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
char _PAD_PROPERTIES_[ sizeof(AST*) * 3 ];
CodeBody Body;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Union) == sizeof(AST), "ERROR: AST_Union is not the same size as AST");
struct AST_Using
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
char _PAD_SPECS_ [ sizeof(AST*) ];
CodeType UnderlyingType;
char _PAD_PROPERTIES_[ sizeof(AST*) * 2 ];
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Using) == sizeof(AST), "ERROR: AST_Using is not the same size as AST");
struct AST_Var
{
union {
char _PAD_[ sizeof(SpecifierT) * AST::ArrSpecs_Cap ];
struct
{
CodeAttributes Attributes;
CodeSpecifier Specs;
CodeType ValueType;
char _PAD_PROPERTIES_[ sizeof(AST*) ];
Code Value;
};
};
Code Prev;
Code Next;
Code Parent;
StringCached Name;
CodeT Type;
ModuleFlag ModuleFlags;
char _PAD_UNUSED_[ sizeof(u32) ];
};
static_assert( sizeof(AST_Var) == sizeof(AST), "ERROR: AST_Var is not the same size as AST");
#pragma endregion Filtered ASTs
#pragma endregion Data Structures
#pragma region Gen Interface
// Initialize the library.
// This currently just initializes the CodePool.
void init();
// Currently manually free's the arenas, code for checking for leaks.
// However on Windows at least, it doesn't need to occur as the OS will clean up after the process.
void deinit();
// Clears the allocations, but doesn't return to the heap, the calls init() again.
// Ease of use.
void reset();
// Used internally to retrive or make string allocations.
// Strings are stored in a series of string arenas of fixed size (SizePer_StringArena)
StringCached get_cached_string( StrC str );
/*
This provides a fresh Code AST.
The gen interface use this as their method from getting a new AST object from the CodePool.
Use this if you want to make your own API for formatting the supported Code Types.
*/
Code make_code();
// Set these before calling gen's init() procedure.
// Data
void set_allocator_data_arrays ( AllocatorInfo data_array_allocator );
void set_allocator_code_pool ( AllocatorInfo pool_allocator );
void set_allocator_lexer ( AllocatorInfo lex_allocator );
void set_allocator_string_arena ( AllocatorInfo string_allocator );
void set_allocator_string_table ( AllocatorInfo string_allocator );
void set_allocator_type_table ( AllocatorInfo type_reg_allocator );
#pragma region Upfront
CodeAttributes def_attributes( StrC content );
CodeComment def_comment ( StrC content );
CodeClass def_class( StrC name
, Code body = NoCode
, CodeType parent = NoCode, AccessSpec access = AccessSpec::Default
, CodeAttributes attributes = NoCode
, ModuleFlag mflags = ModuleFlag::None );
CodeEnum def_enum( StrC name
, Code body = NoCode, CodeType type = NoCode
, EnumT specifier = EnumRegular, CodeAttributes attributes = NoCode
, ModuleFlag mflags = ModuleFlag::None );
CodeExec def_execution ( StrC content );
CodeExtern def_extern_link( StrC name, Code body );
CodeFriend def_friend ( Code symbol );
CodeFn def_function( StrC name
, CodeParam params = NoCode, CodeType ret_type = NoCode, Code body = NoCode
, CodeSpecifier specifiers = NoCode, CodeAttributes attributes = NoCode
, ModuleFlag mflags = ModuleFlag::None );
CodeInclude def_include ( StrC content );
CodeModule def_module ( StrC name, ModuleFlag mflags = ModuleFlag::None );
CodeNamespace def_namespace( StrC name, Code body, ModuleFlag mflags = ModuleFlag::None );
CodeOperator def_operator( OperatorT op
, CodeParam params = NoCode, CodeType ret_type = NoCode, Code body = NoCode
, CodeSpecifier specifiers = NoCode, CodeAttributes attributes = NoCode
, ModuleFlag mflags = ModuleFlag::None );
CodeOpCast def_operator_cast( CodeType type, Code body = NoCode );
CodeParam def_param ( CodeType type, StrC name, Code value = NoCode );
CodeSpecifier def_specifier( SpecifierT specifier );
CodeStruct def_struct( StrC name
, Code body = NoCode
, CodeType parent = NoCode, AccessSpec access = AccessSpec::Default
, CodeAttributes attributes = NoCode
, ModuleFlag mflags = ModuleFlag::None );
CodeTemplate def_template( CodeParam params, Code definition, ModuleFlag mflags = ModuleFlag::None );
CodeType def_type ( StrC name, Code arrayexpr = NoCode, CodeSpecifier specifiers = NoCode, CodeAttributes attributes = NoCode );
CodeTypedef def_typedef( StrC name, Code type, CodeAttributes attributes = NoCode, ModuleFlag mflags = ModuleFlag::None );
CodeUnion def_union( StrC name, Code body, CodeAttributes attributes = NoCode, ModuleFlag mflags = ModuleFlag::None );
CodeUsing def_using( StrC name, CodeType type = NoCode
, CodeAttributes attributess = NoCode
, ModuleFlag mflags = ModuleFlag::None );
CodeUsing def_using_namespace( StrC name );
CodeVar def_variable( CodeType type, StrC name, Code value = NoCode
, CodeSpecifier specifiers = NoCode, CodeAttributes attributes = NoCode
, ModuleFlag mflags = ModuleFlag::None );
// Constructs an empty body. Use AST::validate_body() to check if the body is was has valid entries.
CodeBody def_body( CodeT type );
// There are two options for defining a struct body, either varadically provided with the args macro to auto-deduce the arg num,
/// or provide as an array of Code objects.
CodeBody def_class_body ( s32 num, ... );
CodeBody def_class_body ( s32 num, Code* codes );
CodeBody def_enum_body ( s32 num, ... );
CodeBody def_enum_body ( s32 num, Code* codes );
CodeBody def_export_body ( s32 num, ... );
CodeBody def_export_body ( s32 num, Code* codes);
CodeBody def_extern_link_body( s32 num, ... );
CodeBody def_extern_link_body( s32 num, Code* codes );
CodeBody def_function_body ( s32 num, ... );
CodeBody def_function_body ( s32 num, Code* codes );
CodeBody def_global_body ( s32 num, ... );
CodeBody def_global_body ( s32 num, Code* codes );
CodeBody def_namespace_body ( s32 num, ... );
CodeBody def_namespace_body ( s32 num, Code* codes );
CodeParam def_params ( s32 num, ... );
CodeParam def_params ( s32 num, CodeParam* params );
CodeSpecifier def_specifiers ( s32 num, ... );
CodeSpecifier def_specifiers ( s32 num, SpecifierT* specs );
CodeBody def_struct_body ( s32 num, ... );
CodeBody def_struct_body ( s32 num, Code* codes );
CodeBody def_union_body ( s32 num, ... );
CodeBody def_union_body ( s32 num, Code* codes );
#pragma endregion Upfront
#pragma region Parsing
CodeClass parse_class ( StrC class_def );
CodeEnum parse_enum ( StrC enum_def );
CodeBody parse_export_body ( StrC export_def );
CodeExtern parse_extern_link ( StrC exten_link_def);
CodeFriend parse_friend ( StrC friend_def );
CodeFn parse_function ( StrC fn_def );
CodeBody parse_global_body ( StrC body_def );
CodeNamespace parse_namespace ( StrC namespace_def );
CodeOperator parse_operator ( StrC operator_def );
CodeOpCast parse_operator_cast( StrC operator_def );
CodeStruct parse_struct ( StrC struct_def );
CodeTemplate parse_template ( StrC template_def );
CodeType parse_type ( StrC type_def );
CodeTypedef parse_typedef ( StrC typedef_def );
CodeUnion parse_union ( StrC union_def );
CodeUsing parse_using ( StrC using_def );
CodeVar parse_variable ( StrC var_def );
#pragma endregion Parsing
#pragma region Untyped text
sw token_fmt_va( char* buf, uw buf_size, s32 num_tokens, va_list va );
StrC token_fmt_impl( sw, ... );
Code untyped_str ( StrC content);
Code untyped_fmt ( char const* fmt, ... );
Code untyped_token_fmt( char const* fmt, s32 num_tokens, ... );
#pragma endregion Untyped text
#pragma endregion Gen Interaface
struct Builder
{
FileInfo File;
String Buffer;
void print( Code );
void print_fmt( char const* fmt, ... );
bool open( char const* path );
void write();
};
#pragma region Inlines
void AST::append( AST* other )
{
if ( other->Parent )
other = other->duplicate();
other->Parent = this;
if ( Front == nullptr )
{
Front = other;
Back = other;
NumEntries++;
return;
}
AST*
Current = Back;
Current->Next = other;
other->Prev = Current;
Back = other;
NumEntries++;
}
char const* AST::debug_str()
{
char const* fmt = stringize(
\nCode Debug:
\nType : %s
\nParent : %s
\nName : %s
\nComment : %s
);
// These should be used immediately in a log.
// Thus if its desired to keep the debug str
// for multiple calls to bprintf,
// allocate this to proper string.
return str_fmt_buf( fmt
, type_str()
, Parent ? Parent->Name : ""
, Name ? Name : ""
);
}
Code& AST::entry( u32 idx )
{
AST** current = & Front;
while ( idx >= 0 && current != nullptr )
{
if ( idx == 0 )
return * rcast( Code*, current);
current = & ( * current )->Next;
idx--;
}
return * rcast( Code*, current);
}
bool AST::has_entries()
{
return NumEntries;
}
char const* AST::type_str()
{
return ECode::to_str( Type );
}
AST::operator Code()
{
return { this };
}
Code& Code::operator ++()
{
if ( ast )
ast = ast->Next;
return *this;
}
#pragma region AST & Code Gen Common
#define Define_CodeImpl( Typename ) \
char const* Typename::debug_str() \
{ \
if ( ast == nullptr ) \
return "Code::debug_str: AST is null!"; \
\
return rcast(AST*, ast)->debug_str(); \
} \
Code Typename::duplicate() \
{ \
if ( ast == nullptr ) \
{ \
log_failure("Code::duplicate: Cannot duplicate code, AST is null!"); \
return Code::Invalid; \
} \
\
return { rcast(AST*, ast)->duplicate() }; \
} \
bool Typename::is_equal( Code other ) \
{ \
if ( ast == nullptr || other.ast == nullptr ) \
{ \
log_failure("Code::is_equal: Cannot compare code, AST is null!"); \
return false; \
} \
\
return rcast(AST*, ast)->is_equal( other.ast ); \
} \
bool Typename::is_valid() \
{ \
return (AST*) ast != nullptr && rcast( AST*, ast)->Type != CodeT::Invalid; \
} \
void Typename::set_global() \
{ \
if ( ast == nullptr ) \
{ \
log_failure("Code::set_global: Cannot set code as global, AST is null!"); \
return; \
} \
\
rcast(AST*, ast)->Parent = Code::Global.ast; \
} \
String Typename::to_string() \
{ \
if ( ast == nullptr ) \
{ \
log_failure("Code::to_string: Cannot convert code to string, AST is null!"); \
return { nullptr }; \
} \
\
return rcast(AST*, ast)->to_string(); \
} \
Typename& Typename::operator =( Code other ) \
{ \
if ( other.ast && other->Parent ) \
{ \
ast = rcast( decltype(ast), other.ast->duplicate() ); \
rcast( AST*, ast)->Parent = nullptr; \
} \
\
ast = rcast( decltype(ast), other.ast ); \
return *this; \
} \
bool Typename::operator ==( Code other ) \
{ \
return (AST*) ast == other.ast; \
} \
bool Typename::operator !=( Code other ) \
{ \
return (AST*) ast != other.ast; \
}
Define_CodeImpl( Code );
Define_CodeImpl( CodeBody );
Define_CodeImpl( CodeAttributes );
Define_CodeImpl( CodeComment );
Define_CodeImpl( CodeClass );
Define_CodeImpl( CodeEnum );
Define_CodeImpl( CodeExec );
Define_CodeImpl( CodeExtern );
Define_CodeImpl( CodeInclude );
Define_CodeImpl( CodeFriend );
Define_CodeImpl( CodeFn );
Define_CodeImpl( CodeModule );
Define_CodeImpl( CodeNamespace );
Define_CodeImpl( CodeOperator );
Define_CodeImpl( CodeOpCast );
Define_CodeImpl( CodeParam );
Define_CodeImpl( CodeSpecifier );
Define_CodeImpl( CodeStruct );
Define_CodeImpl( CodeTemplate );
Define_CodeImpl( CodeType );
Define_CodeImpl( CodeTypedef );
Define_CodeImpl( CodeUnion );
Define_CodeImpl( CodeUsing );
Define_CodeImpl( CodeVar );
#undef Define_CodeImpl
#define Define_AST_Cast( typename ) \
AST::operator Code ## typename() \
{ \
return { rcast( AST_ ## typename*, this ) }; \
}
Define_AST_Cast( Body );
Define_AST_Cast( Attributes );
Define_AST_Cast( Comment );
Define_AST_Cast( Class );
Define_AST_Cast( Enum );
Define_AST_Cast( Exec );
Define_AST_Cast( Extern );
Define_AST_Cast( Include );
Define_AST_Cast( Friend );
Define_AST_Cast( Fn );
Define_AST_Cast( Module );
Define_AST_Cast( Namespace );
Define_AST_Cast( Operator );
Define_AST_Cast( OpCast );
Define_AST_Cast( Param );
Define_AST_Cast( Specifier );
Define_AST_Cast( Struct );
Define_AST_Cast( Template );
Define_AST_Cast( Type );
Define_AST_Cast( Typedef );
Define_AST_Cast( Union );
Define_AST_Cast( Using );
Define_AST_Cast( Var );
#undef Define_AST_Cast
#define Define_CodeCast( type ) \
Code::operator Code ## type() const \
{ \
return { (AST_ ## type*) ast }; \
}
Define_CodeCast( Attributes );
Define_CodeCast( Comment );
Define_CodeCast( Class );
Define_CodeCast( Exec );
Define_CodeCast( Enum );
Define_CodeCast( Extern );
Define_CodeCast( Include );
Define_CodeCast( Friend );
Define_CodeCast( Fn );
Define_CodeCast( Module );
Define_CodeCast( Namespace );
Define_CodeCast( Operator );
Define_CodeCast( OpCast );
Define_CodeCast( Param );
Define_CodeCast( Specifier );
Define_CodeCast( Struct );
Define_CodeCast( Template );
Define_CodeCast( Type );
Define_CodeCast( Typedef );
Define_CodeCast( Union );
Define_CodeCast( Using );
Define_CodeCast( Var );
Define_CodeCast( Body);
#undef Define_CodeCast
#pragma endregion AST & Code Gen Common
void CodeParam::append( CodeParam other )
{
AST* self = (AST*) ast;
AST* entry = (AST*) other.ast;
if ( entry->Parent )
entry = entry->duplicate();
entry->Parent = self;
if ( self->Last == nullptr )
{
self->Last = entry;
self->Next = entry;
self->NumEntries++;
return;
}
self->Last->Next = entry;
self->Last = entry;
self->NumEntries++;
}
CodeParam CodeParam::get( s32 idx )
{
CodeParam param = *this;
do
{
if ( ! ++ param )
return { nullptr };
return { (AST_Param*) param.raw()->Next };
}
while ( --idx );
return { nullptr };
}
bool CodeParam::has_entries()
{
return ast->NumEntries > 0;
}
CodeParam& CodeParam::operator ++()
{
ast = ast->Next.ast;
return * this;
}
CodeBody def_body( CodeT type )
{
switch ( type )
{
using namespace ECode;
case Class_Body:
case Enum_Body:
case Export_Body:
case Extern_Linkage:
case Function_Body:
case Global_Body:
case Namespace_Body:
case Struct_Body:
case Union_Body:
break;
default:
log_failure( "def_body: Invalid type %s", (char const*)ECode::to_str(type) );
return (CodeBody)Code::Invalid;
}
Code
result = make_code();
result->Type = type;
return (CodeBody)result;
}
//! Do not use directly. Use the token_fmt macro instead.
// Takes a format string (char const*) and a list of tokens (StrC) and returns a StrC of the formatted string.
StrC token_fmt_impl( sw num, ... )
{
local_persist thread_local
char buf[GEN_PRINTF_MAXLEN] = { 0 };
mem_set( buf, 0, GEN_PRINTF_MAXLEN );
va_list va;
va_start(va, num );
sw result = token_fmt_va(buf, GEN_PRINTF_MAXLEN, num, va);
va_end(va);
return { result, buf };
}
#pragma endregion Inlines
// namespace gen
}
#pragma region Constants
#ifdef GEN_DEFINE_LIBRARY_CODE_CONSTANTS
namespace gen
{
// Predefined typename codes. Are set to readonly and are setup during gen::init()
extern CodeType t_b32;
extern CodeType t_s8;
extern CodeType t_s16;
extern CodeType t_s32;
extern CodeType t_s64;
extern CodeType t_u8;
extern CodeType t_u16;
extern CodeType t_u32;
extern CodeType t_u64;
extern CodeType t_sw;
extern CodeType t_uw;
extern CodeType t_f32;
extern CodeType t_f64;
}
#endif
namespace gen
{
// These constexprs are used for allocation behavior of data structures
// or string handling while constructing or serializing.
// Change them to suit your needs.
constexpr s32 InitSize_DataArrays = 16;
constexpr s32 InitSize_StringTable = megabytes(4);
// NOTE: This limits the maximum size of an allocation
// If you are generating a string larger than this, increase the size of the bucket here.
constexpr uw Global_BucketSize = megabytes(10);
constexpr s32 CodePool_NumBlocks = kilobytes(64);
constexpr s32 SizePer_StringArena = megabytes(1);
constexpr s32 MaxCommentLineLength = 1024;
constexpr s32 MaxNameLength = 128;
constexpr s32 MaxUntypedStrLength = kilobytes(640);
constexpr s32 StringTable_MaxHashLength = kilobytes(1);
constexpr s32 TokenFmt_TokenMap_MemSize = kilobytes(4);
constexpr s32 LexAllocator_Size = megabytes(10);
constexpr s32 Builder_StrBufferReserve = megabytes(1);
extern CodeType t_auto;
extern CodeType t_void;
extern CodeType t_int;
extern CodeType t_bool;
extern CodeType t_char;
extern CodeType t_wchar_t;
extern CodeType t_class;
extern CodeType t_typename;
extern Code access_public;
extern Code access_protected;
extern Code access_private;
extern Code module_global_fragment;
extern Code module_private_fragment;
extern Code pragma_once;
extern CodeSpecifier spec_const;
extern CodeSpecifier spec_consteval;
extern CodeSpecifier spec_constexpr;
extern CodeSpecifier spec_constinit;
extern CodeSpecifier spec_extern_linkage;
extern CodeSpecifier spec_global;
extern CodeSpecifier spec_inline;
extern CodeSpecifier spec_internal_linkage;
extern CodeSpecifier spec_local_persist;
extern CodeSpecifier spec_mutable;
extern CodeSpecifier spec_ptr;
extern CodeSpecifier spec_ref;
extern CodeSpecifier spec_register;
extern CodeSpecifier spec_rvalue;
extern CodeSpecifier spec_static_member;
extern CodeSpecifier spec_thread_local;
extern CodeSpecifier spec_volatile;
}
#pragma endregion Constants
#pragma region Macros
# define gen_main main
# define __ NoCode
// Convienence for defining any name used with the gen api.
// Lets you provide the length and string literal to the functions without the need for the DSL.
# define name( Id_ ) { sizeof(stringize( Id_ )) - 1, stringize(Id_) }
// Same as name just used to indicate intention of literal for code instead of names.
# define code( ... ) { sizeof(stringize(__VA_ARGS__)) - 1, stringize( __VA_ARGS__ ) }
# define args( ... ) num_args( __VA_ARGS__ ), __VA_ARGS__
# define code_str( ... ) gen::untyped_str( code( __VA_ARGS__ ) )
# define code_fmt( ... ) gen::untyped_str( token_fmt( __VA_ARGS__ ) )
// Takes a format string (char const*) and a list of tokens (StrC) and returns a StrC of the formatted string.
# define token_fmt( ... ) gen::token_fmt_impl( (num_args( __VA_ARGS__ ) + 1) / 2, __VA_ARGS__ )
#pragma endregion Macros
#ifdef GEN_EXPOSE_BACKEND
namespace gen
{
// Global allocator used for data with process lifetime.
extern AllocatorInfo GlobalAllocator;
extern Array< Arena > Global_AllocatorBuckets;
extern Array< Pool > CodePools;
extern Array< Arena > StringArenas;
extern StringTable StringCache;
extern Arena LexArena;
extern AllocatorInfo Allocator_DataArrays;
extern AllocatorInfo Allocator_CodePool;
extern AllocatorInfo Allocator_Lexer;
extern AllocatorInfo Allocator_StringArena;
extern AllocatorInfo Allocator_StringTable;
extern AllocatorInfo Allocator_TypeTable;
}
#endif
#include "gen.pop_ignores.inline.hpp"
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