Function setup_parser_errposition_callback

src/backend/parser/parse_node.c:144–155

* setup_parser_errposition_callback * Arrange for non-parser errors to report an error position * * Sometimes the parser calls functions that aren't part of the parser * subsystem and can't reasonably be passed a ParseState; yet we would * like any errors thrown in those functions to be tagged with a parse * error location. Use this function to set up an error context stack * entry that w

 *		cancel_parser_errposition_callback(&pcbstate);
 */
void
setup_parser_errposition_callback(ParseCallbackState *pcbstate,
								  ParseState *pstate, int location)
{
	/* Setup error traceback support for ereport() */
	pcbstate->pstate = pstate;
	pcbstate->location = location;
	pcbstate->errcallback.callback = pcb_error_callback;
	pcbstate->errcallback.arg = (void *) pcbstate;
	pcbstate->errcallback.previous = error_context_stack;
	error_context_stack = &pcbstate->errcallback;
}

/*
 * Cancel a previously-set-up errposition callback.