mirror of
https://github.com/zeldaret/ss
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robojumper
112 lines
3.0 KiB
C
112 lines
3.0 KiB
C
#ifndef DECOMP_H
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#define DECOMP_H
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/*******************************************************************************
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* headers
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*/
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/*******************************************************************************
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* Macro helpers
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*/
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#define DF_CONCAT3_(a, b, c) a ## b ## c
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#define DF_CONCAT3(a, b, c) DF_CONCAT3_(a, b, c)
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#define DF_UNIQUE_IDENT(ident_) DF_CONCAT3(ident_, _, __LINE__)
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#define DF_TYPEOF typeof
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#define DF_SWALLOW_SEMICOLON() static_assert(1, "")
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#if defined(__clang__)
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# define DF_SUPPRESS_WARNINGS() \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wnull-dereference\"")
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# define DF_UNSUPPRESS_WARNINGS() \
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_Pragma("clang diagnostic pop")
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#elif defined(__MWERKS__)
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# pragma section RX ".decomp"
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# define DF_SUPPRESS_WARNINGS() __attribute__((section(".decomp")))
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# define DF_UNSUPPRESS_WARNINGS()
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#else
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# define DF_SUPPRESS_WARNINGS()
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# define DF_UNSUPPRESS_WARNINGS()
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#endif
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/*******************************************************************************
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* DECOMP_FORCE macro internals
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*/
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#define DF_FUNCTION_DECLARATOR_WITH_PROTO(ident_) \
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extern void (ident_)(void); \
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extern void (ident_)(void)
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// this is done to prevent default promotion of arguments to variadic functions
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#define DF_FUNCTION_CALL(ident_, arg_) \
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extern void (ident_)(DF_TYPEOF(arg_)); \
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(ident_)(arg_)
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/*******************************************************************************
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* DECOMP_FORCE macros
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*/
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/* Forcefully generate orphaned data, early references, or other shenanigans.
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* Only works at file or namespace scope.
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*
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* Examples:
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* DECOMP_FORCE(1.0f);
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* DECOMP_FORCE("I am a string");
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* DECOMP_FORCE(UI2D_CONSTANT);
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*/
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#define DECOMP_FORCE(arg_) \
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DF_SUPPRESS_WARNINGS() \
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DF_FUNCTION_DECLARATOR_WITH_PROTO(DF_UNIQUE_IDENT(DECOMP_FORCE)) \
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{ \
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DF_FUNCTION_CALL(DF_UNIQUE_IDENT(DECOMP_FORCE_CALL), arg_); \
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} \
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DF_UNSUPPRESS_WARNINGS() \
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DF_SWALLOW_SEMICOLON()
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/* Forcefully instantiate a class's method. For method_, write it as you would
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* an actual function call.
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* Only works at file or namespace scope.
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*
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* If class_ uses commas outside of nested parentheses, you must enclose the
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* entire argument in DF_TYPEOF(). If method_ uses commas outside of nested
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* parentheses, they are handled via __VA_ARGS__.
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*
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* Examples:
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* DECOMP_FORCE_CLASS_METHOD(Class1, ~Class1());
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* DECOMP_FORCE_CLASS_METHOD(DF_TYPEOF(Class2<int, 1>), func<long, int>(2, 3));
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* DECOMP_FORCE_CLASS_METHOD(Class3, operator ,(4));
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*/
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#if defined(__cplusplus)
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# define DECOMP_FORCE_CLASS_METHOD(class_, ...) \
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DECOMP_FORCE(((void)(static_cast<DF_TYPEOF(class_) *>(0)->__VA_ARGS__), 0))
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#endif
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/*******************************************************************************
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* DECOMP_FORCE helpers
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*/
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// Conversion constants from integer to floating-point
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extern signed int DECOMP_SI;
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extern unsigned int DECOMP_UI;
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#define SI2D_CONSTANT ((float)(DECOMP_SI))
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#define UI2D_CONSTANT ((float)(DECOMP_UI))
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// clang-format on
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#endif // DECOMP_H
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