Function _AST_Visitor_visit

src/ast/ast_visitor.c:13–53

recursively visit an ast-node

// recursively visit an ast-node
static VISITOR_STRATEGY _AST_Visitor_visit
(
	const cypher_astnode_t *node,
	ast_visitor *visitor
) {
	ASSERT(node    != NULL);
	ASSERT(visitor != NULL);

	// get ast node type
	cypher_astnode_type_t node_type = cypher_astnode_type(node);

	//--------------------------------------------------------------------------
	// opening call
	//--------------------------------------------------------------------------

	// first visit of the node
	VISITOR_STRATEGY state = visitor->mapping[node_type](node, true, visitor);
	if(state != VISITOR_RECURSE) {
		// do not visit children
		return state;
	}

	//--------------------------------------------------------------------------
	// recall for each child node
	//--------------------------------------------------------------------------

	uint nchildren = cypher_astnode_nchildren(node);
	for (uint i = 0; i < nchildren; i++) {
		if(_AST_Visitor_visit(cypher_astnode_get_child(node, i), visitor) ==
			VISITOR_BREAK) {
				// error occurred, fast fold
				return VISITOR_BREAK;
		}
	}

	//--------------------------------------------------------------------------
	// closing call
	//--------------------------------------------------------------------------

	return visitor->mapping[node_type](node, false, visitor);
}

// get the context of a visitor
void *AST_Visitor_GetContext