ast.h File Reference

#include <stdio.h>
#include "types/ast.h"

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Functions
void	ast_node_init (ast_node_t *node, ast_node_t *parent, node_type_t type, token_t *token)
	Initializes an AST node.
void	ast_close (ast_node_t *root)
	Closes the given AST root node and all children.
ast_node_t *	ast_add_children (ast_node_t *parent, node_type_t type, token_t *token)
	Add a new children for the given AST node.
ast_node_t *	ast_insert_children (ast_node_t *parent, ast_node_t *child)
	Insert a exitent AST node as children of the given parent node.
void	ast_copy (ast_node_t *destiny, ast_node_t *source)
	Copies the content of source to destinty AST nodes.
void	ast_to_json (ast_node_t *root, FILE *file)
	Reads the AST and converts it to JSON, writting on the given file stream.

Function Documentation

ast_add_children()

ast_node_t * ast_add_children	(	ast_node_t *	parent,
		node_type_t	type,
		token_t *	token )

Add a new children for the given AST node.

Parameters

parent	The node parent where the new children will be added.
type	Type of the node.
token	Token to set for the new children node.

Returns

Pointer for the new children on parent.

Definition at line 40 of file ast.c.

{
  _ast_ensure_children_size(parent);
 
  ast_node_t* child = &parent->children[parent->children_count++];
  ast_node_init(child, parent, type, token);
 
  return child;
}

ast_close()

void ast_close

(

ast_node_t *

root

)

Closes the given AST root node and all children.

Parameters

root	The AST's root node.

Definition at line 29 of file ast.c.

{
  for (int i = 0; i < root->children_count; i++) {
    ast_close(&root->children[i]);
  }
 
  free(root->children);
  root->children = NULL;
}

ast_copy()

void ast_copy	(	ast_node_t *	destiny,
		ast_node_t *	source )

Copies the content of source to destinty AST nodes.

Parameters

destiny	Where to copy the node data.
source	The node data that will be copied.

Definition at line 64 of file ast.c.

{
  memcpy(destiny, source, sizeof(ast_node_t));
}

ast_insert_children()

ast_node_t * ast_insert_children	(	ast_node_t *	parent,
		ast_node_t *	child )

Insert a exitent AST node as children of the given parent node.

It's copies the content of the given child for the new children on parent node.

Parameters

parent	The parent where to insert the child.
child	The child to insert as parent's children.

Returns

Pointer for the new children on parent.

Definition at line 51 of file ast.c.

{
  _ast_ensure_children_size(parent);
 
  ast_node_t* new_child = &parent->children[parent->children_count++];
 
  ast_copy(new_child, child);
  new_child->parent = parent;
 
  return new_child;
}

ast_node_init()

void ast_node_init	(	ast_node_t *	node,
		ast_node_t *	parent,
		node_type_t	type,
		token_t *	token )

Initializes an AST node.

Parameters

node	The node to be initialized.
parent	Parent node of the given node.
type	Type of the node.
token	Token of the given node.

Definition at line 17 of file ast.c.

{
  node->parent = parent;
  node->type = type;
  node->token = token;
 
  node->children = malloc(sizeof(ast_node_t) * AST_INITIAL_CHILDREN_LENGTH);
  node->children_count = 0;
  node->_children_length = AST_INITIAL_CHILDREN_LENGTH;
}

ast_to_json()

void ast_to_json	(	ast_node_t *	root,
		FILE *	file )

Reads the AST and converts it to JSON, writting on the given file stream.

Parameters

root	The root of the AST.
file	The file where to write the JSON.

Definition at line 70 of file ast.c.

{
  _ast_to_json_aux(root, file, 0);
  fputc('\n', file);
}