Function _collect_call_projections

src/ast/ast_shared.c:321–346

}

static void _collect_call_projections(
	const cypher_astnode_t *call_clause,
	rax *identifiers
) {
	uint yield_count = cypher_ast_call_nprojections(call_clause);

	if(yield_count == 0) {
		// error if this is a RETURN clause with no aliases
		// e.g.
		// CALL db.indexes() RETURN *
		ErrorCtx_SetError("RETURN * is not allowed when there are no variables in scope");
		return;
	}

	for(uint i = 0; i < yield_count; i ++) {
		const cypher_astnode_t *projection = cypher_ast_call_get_projection(call_clause, i);
		const cypher_astnode_t *ast_exp = cypher_ast_projection_get_expression(projection);

		const cypher_astnode_t *alias_node = cypher_ast_projection_get_alias(projection);
		if(alias_node == NULL) alias_node = ast_exp;

		const char *identifier = cypher_ast_identifier_get_name(alias_node);
		raxTryInsert(identifiers, (unsigned char *)identifier,
			strlen(identifier), (void *)alias_node, NULL);
	}
}

// collect aliases from a CALL {} clause
static void _collect_call_subquery_projections