yyast/node.h File Reference

#include <stdio.h>
#include <yyast/types.h>

Go to the source code of this file.

Defines
#define	_GNU_SOURCE
#define	YA_BRANCH(name,...)   ya_branch(name, __VA_ARGS__, NULL)
	Define a new node.
#define	YA_EMPTYBRANCH(name)   ya_branch(name, NULL)
	A branch that is empty.
#define	YA_LIST(...)   ya_list("@list", __VA_ARGS__, NULL)
	Define a list of nodes.
#define	YA_EMPTYLIST   ya_list("@list", NULL)
	An empty list contains no nodes, but can be used to start a sequence of nodes in the grammar.
Functions
ya_t	ya_branch (const char *restrict name,...)
	Create an ya node.
ya_t	ya_list (const char *restrict name,...)
	Create an ya node.
void	ya_node_save (FILE *output_file, ya_t *node)
	Save the node to a file.

---

Define Documentation

#define _GNU_SOURCE

Definition at line 28 of file node.h.

#define YA_BRANCH	(	name,
		...		)	ya_branch(name, __VA_ARGS__, NULL)

Define a new node.

Used in a yacc action to start a new node. If a list is added to a branch, then the nodes of the list are added to the created node, instead of the list itself.

Parameters:

	name	Name of the node
	...	A set of nodes, leaves or lists to be included in this node.

Returns:

A node

Definition at line 41 of file node.h.

Referenced by ya_get_filenames(), and ya_header().

#define YA_EMPTYBRANCH

(

name

)

ya_branch(name, NULL)

A branch that is empty.

Used if a node normally has children, except in this case.

Parameters:

name

Name of the node.

Returns:

A empty node.

Definition at line 49 of file node.h.

#define YA_EMPTYLIST   ya_list("@list", NULL)

An empty list contains no nodes, but can be used to start a sequence of nodes in the grammar.

Definition at line 62 of file node.h.

Referenced by ya_get_filenames().

#define YA_LIST

(

...

)

ya_list("@list", __VA_ARGS__, NULL)

Define a list of nodes.

Used in yacc to create a list of nodes. When adding a list to an other list or node, the contents of the list is appended to the node and list.

Parameters:

...

A list of literals to be included in this node.

Returns:

A list

Definition at line 58 of file node.h.

Referenced by ya_get_filenames().

---

Function Documentation

ya_t ya_branch	(	const char *restrict	name,
			...
	)

Create an ya node.

Create a node from subnodes. This will free memory used by the subnodes. If a list is added to a branch, then the nodes of the list are added to the created node, instead of the list itself.

Parameters:

	name	Name of the node.
	...	The subnodes, ending with NULL

Returns:

A new AST NODE.

Definition at line 151 of file node.c.

References ya_generic_nodev(), and YA_NODE_TYPE_BRANCH.

ya_t ya_list	(	const char *restrict	name,
			...
	)

Create an ya node.

Create a list of subnodes, when included in a list or node, it expands as if the contents was passed as seperate items. This also free memory used by the subnodes.

Parameters:

	name	Name of the node. This should be '@list' because this function is called from the YA_LIST macro.
	...	The subnodes, ending with NULL

Returns:

A new AST NODE.

Definition at line 163 of file node.c.

References ya_generic_nodev(), and YA_NODE_TYPE_LIST.

void ya_node_save	(	FILE *	output_file,
		ya_t *	node
	)

Save the node to a file.

Parameters:

	output_file	A file pointer of an file open for writing.
	node	The node to be saved to file.

Definition at line 175 of file node.c.

References ya_t::node, and ya_t::size.

Referenced by ya_main().