Report errors with line and column

package main
 
import (
	"errors"
	"fmt"
 
	oneyaml "oneyaml.dev/go"
)
 
type Config struct {
	Port    uint16 `yaml:"port"`
	Debug   bool   `yaml:"debug"`
	Workers int    `yaml:"workers"`
}
 
func main() {
	// Malformed YAML: a *SyntaxError with a line, a column and a category.
	err := oneyaml.Unmarshal([]byte("name: web\nports: [80, 443\n"), new(any))
	var se *oneyaml.SyntaxError
	if errors.As(err, &se) {
		fmt.Printf("%d:%d %s: %s\n", se.Line, se.Column, se.Category, se.Msg)
	}
 
	// A duplicate key says where the first one was.
	err = oneyaml.Unmarshal([]byte("name: web\nname: api\n"), new(any))
	if errors.As(err, &se) {
		fmt.Printf("%d:%d %q, first at %d:%d\n", se.Line, se.Column, se.Key, se.FirstLine, se.FirstColumn)
	}
 
	// Values that don't fit: every mismatch, each with its path and position.
	var cfg Config
	err = oneyaml.Unmarshal([]byte("port: 99999\ndebug: yes\nworkers: 4\n"), &cfg)
	var te *oneyaml.TypeError
	if errors.As(err, &te) {
		for _, e := range te.All() {
			fmt.Printf("%d:%d %s: %s\n", e.Line, e.Column, e.Path, e.Msg)
		}
	}
	fmt.Println("the rest is still read: workers =", cfg.Workers)
}

3:1 syntax: expected ',' or ']' after an entry of the flow sequence opened at line 2, column 8 (is its closing ']' missing?)
2:1 "name", first at 1:1
1:7 /port: value `99999` overflows uint16
2:8 /debug: cannot unmarshal !!str `yes` into bool
the rest is still read: workers = 4