nix_api_value.h File Reference

libexpr C bindings dealing with values More...

#include "nix_api_util.h"
#include "stdbool.h"
#include "stddef.h"
#include "stdint.h"

Go to the source code of this file.

Typedefs
typedef void	Value
typedef struct State	State
typedef struct BindingsBuilder	BindingsBuilder
	Stores an under-construction set of bindings. More...
typedef struct PrimOp	PrimOp
	PrimOp function. More...
typedef struct ExternalValue	ExternalValue
	External Value. More...
typedef void(*	PrimOpFun) (State *state, int pos, Value **args, Value *v)
	Function pointer for primops. More...

Enumerations
enum	ValueType {   NIX_TYPE_THUNK , NIX_TYPE_INT , NIX_TYPE_FLOAT , NIX_TYPE_BOOL ,   NIX_TYPE_STRING , NIX_TYPE_PATH , NIX_TYPE_NULL , NIX_TYPE_ATTRS ,   NIX_TYPE_LIST , NIX_TYPE_FUNCTION , NIX_TYPE_EXTERNAL }

Functions
PrimOp *	nix_alloc_primop (nix_c_context *context, PrimOpFun fun, int arity, const char *name, const char **args, const char *doc)
	Allocate a primop. More...
nix_err	nix_register_primop (nix_c_context *context, PrimOp *primOp)
	add a primop to builtins More...
Value *	nix_alloc_value (nix_c_context *context, State *state)
	Allocate a Nix value. More...
BindingsBuilder *	nix_make_bindings_builder (nix_c_context *context, State *state, size_t capacity)
	Create a bindings builder. More...
nix_err	nix_bindings_builder_insert (nix_c_context *context, BindingsBuilder *builder, const char *name, Value *value)
	Insert bindings into a builder. More...
void	nix_bindings_builder_free (BindingsBuilder *builder)
	Free a bindings builder. More...
Getters
ValueType	nix_get_type (nix_c_context *context, const Value *value)
	Get value type. More...
const char *	nix_get_typename (nix_c_context *context, const Value *value)
	Get type name of value. More...
bool	nix_get_bool (nix_c_context *context, const Value *value)
	Get boolean value. More...
const char *	nix_get_string (nix_c_context *context, const Value *value)
	Get string. More...
const char *	nix_get_path_string (nix_c_context *context, const Value *value)
	Get path as string. More...
unsigned int	nix_get_list_size (nix_c_context *context, const Value *value)
	Get the length of a list. More...
unsigned int	nix_get_attrs_size (nix_c_context *context, const Value *value)
	Get the element count of an attrset. More...
double	nix_get_float (nix_c_context *context, const Value *value)
	Get float value in 64 bits. More...
int64_t	nix_get_int (nix_c_context *context, const Value *value)
	Get int value. More...
ExternalValue *	nix_get_external (nix_c_context *context, Value *)
	Get external reference. More...
Value *	nix_get_list_byidx (nix_c_context *context, const Value *value, State *state, unsigned int ix)
	Get the ix'th element of a list. More...
Value *	nix_get_attr_byname (nix_c_context *context, const Value *value, State *state, const char *name)
	Get an attr by name. More...
bool	nix_has_attr_byname (nix_c_context *context, const Value *value, State *state, const char *name)
	Check if an attribute name exists on a value. More...
Value *	nix_get_attr_byidx (nix_c_context *context, const Value *value, State *state, unsigned int i, const char **name)
	Get an attribute by index in the sorted bindings. More...
const char *	nix_get_attr_name_byidx (nix_c_context *context, const Value *value, State *state, unsigned int i)
	Get an attribute name by index in the sorted bindings. More...
Setters
nix_err	nix_set_bool (nix_c_context *context, Value *value, bool b)
	Set boolean value. More...
nix_err	nix_set_string (nix_c_context *context, Value *value, const char *str)
	Set a string. More...
nix_err	nix_set_path_string (nix_c_context *context, Value *value, const char *str)
	Set a path. More...
nix_err	nix_set_float (nix_c_context *context, Value *value, double d)
	Set a float. More...
nix_err	nix_set_int (nix_c_context *context, Value *value, int64_t i)
	Set an int. More...
nix_err	nix_set_null (nix_c_context *context, Value *value)
	Set null. More...
nix_err	nix_set_external (nix_c_context *context, Value *value, ExternalValue *val)
	Set an external value. More...
nix_err	nix_make_list (nix_c_context *context, State *s, Value *value, unsigned int size)
	Allocate a list. More...
nix_err	nix_set_list_byidx (nix_c_context *context, Value *value, unsigned int ix, Value *elem)
	Manipulate a list by index. More...
nix_err	nix_make_attrs (nix_c_context *context, Value *value, BindingsBuilder *b)
	Create an attribute set from a bindings builder. More...
nix_err	nix_set_primop (nix_c_context *context, Value *value, PrimOp *op)
	Set primop. More...
nix_err	nix_copy_value (nix_c_context *context, Value *value, Value *source)
	Copy from another value. More...

Detailed Description

libexpr C bindings dealing with values