pp.h File Reference

A file full of preprocessor helpers. More...

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Defines

#define ppCastPtr(type)   (type)(void*)

Do a typecast that doesn't trigger B.S. 'type punned pointer' warnings.

#define ppNULL

Placeholder "nothing" parameter for preprocessor directives.

#define ppCM   ,

Drop a comma ',' into a block of template junk so preprocessor doesn't interpret it.

#define ppLP   (

Drop a left-parenthesis '(' into a block of template junk so preprocessor doesn't interpret it.

#define ppRP   )

Drop a right-parenthesis ')' into a block of template junk so preprocessor doesn't interpret it.

#define ppEat(p)

Eat some trailing thing from an expansion.

#define ppEat2(p1, p2)

Eat some more trailing things from an expansion.

#define ppToken(d)   d

Force separate translation of intermediate preprocessor stage.

#define ppTokStr(d)   _ppTokStr(d)

Interpret, then convert a preprocessor directive (d) into a string.

#define ppConcat(a, b)   _ppConcat(a,b)

Interpret two tokens, concatenate the results together.

#define ppConcat3(a, b, c)   _ppConcat3(a,b,c)

Interpret three tokens, concatenate the results together.

#define ppConcat4(a, b, c, d)   _ppConcat4(a,b,c,d)

Interpret four tokens, concatenate the results together.

#define ppConcat5(a, b, c, d, e)   _ppConcat5(a,b,c,d,e)

Interpret four tokens, concatenate the results together.

#define ppConcat6(a, b, c, d, e, f)   _ppConcat6(a,b,c,d,e,f)

Interpret four tokens, concatenate the results together.

#define ppScr(label)   ppConcat(label,__LINE__)

Build a unique scratch label for macro functions.

#define ppC_CPP(c, cpp)   c

Selectively choose C or CPP based on C or C++ compiler.

#define ppRaw(rawcooked, raw)   ppConcat(ppRAW_,rawcooked)(raw)

Selectively choose 'raw' or 'cooked' code, such as containers that contain raw.

#define ppForUnit(p)

Make cutting unit-based definitions a little easier.

#define offsetof(s, m)   ((size_t)&(((s *)0)->m))

Get offset of member 'm' in class or struct 's'.

#define dereference(s, m, p)   ((s *)((size_t)(p) - offsetof(s,m)))

Convert a pointer 'p' *KNOWN* to be from a member of 's' back to a pointer to 's'.

Detailed Description

A file full of preprocessor helpers.

Author:: David Mace

Definition in file pp.h.

Define Documentation

#define dereference	(	s,
		m,
		p	)	((s *)((size_t)(p) - offsetof(s,m)))

Convert a pointer 'p' *KNOWN* to be from a member of 's' back to a pointer to 's'.

Parameters:

	s	Structure to perform offsetof operation on
	m	Member to find offset of
	p	Pointer to a structure member, known to be member of 's'

Returns:: Pointer to structure

Definition at line 197 of file pp.h.

#define offsetof	(	s,
		m		)	((size_t)&(((s *)0)->m))

Get offset of member 'm' in class or struct 's'.

Parameters:

	s	Structure to perform offsetof operation on
	m	Member to find offset of

Returns:: Count of bytes between start of structure and 'm'

Definition at line 185 of file pp.h.

#define ppEat ( p )

Eat some trailing thing from an expansion.

Parameters:

p

Token to eat

Definition at line 66 of file pp.h.

#define ppEat2	(	p1,
		p2		)

Eat some more trailing things from an expansion.

Parameters:

	p1	Eat me
	p2	Eat me

Definition at line 73 of file pp.h.

#define ppScr ( label ) ppConcat(label,__LINE__)

Build a unique scratch label for macro functions.

root Something to group labels together with derive Label to apply to

Definition at line 117 of file pp.h.

#define ppToken ( d ) d

Force separate translation of intermediate preprocessor stage.

Parameters:

d

token to expand to its meaninf

Definition at line 79 of file pp.h.

#define ppTokStr ( d ) _ppTokStr(d)

Interpret, then convert a preprocessor directive (d) into a string.

Parameters:

d

Token to expand and make a string from

Definition at line 85 of file pp.h.


Defines
#define	ppCastPtr(type) (type)(void*)
	Do a typecast that doesn't trigger B.S. 'type punned pointer' warnings.
#define	ppNULL
	Placeholder "nothing" parameter for preprocessor directives.
#define	ppCM ,
	Drop a comma ',' into a block of template junk so preprocessor doesn't interpret it.
#define	ppLP (
	Drop a left-parenthesis '(' into a block of template junk so preprocessor doesn't interpret it.
#define	ppRP )
	Drop a right-parenthesis ')' into a block of template junk so preprocessor doesn't interpret it.
#define	ppEat(p)
	Eat some trailing thing from an expansion.
#define	ppEat2(p1, p2)
	Eat some more trailing things from an expansion.
#define	ppToken(d) d
	Force separate translation of intermediate preprocessor stage.
#define	ppTokStr(d) _ppTokStr(d)
	Interpret, then convert a preprocessor directive (d) into a string.
#define	ppConcat(a, b) _ppConcat(a,b)
	Interpret two tokens, concatenate the results together.
#define	ppConcat3(a, b, c) _ppConcat3(a,b,c)
	Interpret three tokens, concatenate the results together.
#define	ppConcat4(a, b, c, d) _ppConcat4(a,b,c,d)
	Interpret four tokens, concatenate the results together.
#define	ppConcat5(a, b, c, d, e) _ppConcat5(a,b,c,d,e)
	Interpret four tokens, concatenate the results together.
#define	ppConcat6(a, b, c, d, e, f) _ppConcat6(a,b,c,d,e,f)
	Interpret four tokens, concatenate the results together.
#define	ppScr(label) ppConcat(label,__LINE__)
	Build a unique scratch label for macro functions.
#define	ppC_CPP(c, cpp) c
	Selectively choose C or CPP based on C or C++ compiler.
#define	ppRaw(rawcooked, raw) ppConcat(ppRAW_,rawcooked)(raw)
	Selectively choose 'raw' or 'cooked' code, such as containers that contain raw.
#define	ppForUnit(p)
	Make cutting unit-based definitions a little easier.
#define	offsetof(s, m) ((size_t)&(((s *)0)->m))
	Get offset of member 'm' in class or struct 's'.
#define	dereference(s, m, p) ((s *)((size_t)(p) - offsetof(s,m)))
	Convert a pointer 'p' KNOWN to be from a member of 's' back to a pointer to 's'.