Generic value representations. More...

Macros
#define	lh_value_null
	Null value.

#define	lh_ptr_value(v)
	Convert an lh_value back to a pointer.

#define	lh_value_any_ptr(p)
	Convert any pointer into a lh_value.

#define	lh_value_ptr(p)
	Convert a pointer to an lh_value. More...

#define	lh_value_value(v)
	Identity; used to aid macros.

#define	lh_int_value(v)
	Convert an lh_value back to an `int`.

#define	lh_value_int(i)
	Convert an `int` to an lh_value.

#define	lh_long_value(v)
	Convert an lh_value back to a `long`.

#define	lh_value_long(i)
	Convert a `long` to an lh_value.

#define	lh_uint64_t_value(v)
	Convert an lh_value back to a `uint64_t`.

#define	lh_value_uint64_t(i)
	Convert a `uint64_t` to an lh_value.

#define	lh_bool_value(v)
	Convert an lh_value back to a `bool`.

#define	lh_value_bool(b)
	Convert a `bool` to an lh_value.

#define	lh_lh_string_value(v)
	Convert an lh_value back to a `const char*`.

#define	lh_value_lh_string(v)
	Convert a `const char*` to an lh_value.

#define	lh_optag_value(v)

#define	lh_value_optag(o)

#define	lh_lh_voidptr_value(v)
	Convert an lh_value back to a `void*`.

#define	lh_value_lh_voidptr(p)
	Convert a `void*` to an lh_value.

#define	lh_value_fun_ptr(f)
	Convert a function pointer into a lh_value.

Typedefs
typedef long long	lh_value
	Generic values are represented by an `lh_value`. More...

typedef const char *	lh_string
	Type definition for strings to aid with macros.

typedef void *	lh_voidptr
	Type definition for void pointers to aid with macros.

typedef void()	lh_voidfun()
	Generic function pointer.

typedef lh_value()	lh_actionfun(lh_value)
	A generic action working on generic lh_value s.

typedef lh_value()	lh_resultfun(lh_value local, lh_value arg)
	A `lh_resultfun` is called when a handled action is done.

typedef lh_value	lh_acquirefun(lh_value local)
	An acquire function copies the local state in a handler when required.

typedef void	lh_releasefun(lh_value local)
	A release function releases the local state in a handler when required.

Functions
lh_value	lh_check_value_ptr (const void *p)

lh_voidfun *	lh_fun_ptr_value (lh_value v)
	Convert an lh_value back to a function pointer.

Detailed Description

Generic value representations.

The lh_value is used to define generic functions in C where we can convert basic values to and from an lh_value, using the lh_<to>_<from> defines.

Macro Definition Documentation

#define lh_value_ptr ( p )

Convert a pointer to an lh_value.

The pointer should not point into the stack.

typedef long long lh_value

Generic values are represented by an lh_value.

These can hold a long long (which is at least 64-bits). The macros lh_<to>_<from> are used to convert to and from lh_values.