package xvdoc

import (
	"bytes"
	"encoding/json"
)

type styleRect struct {
	x, y   int
	dx, dy int
	styles []string
}

func (s *styleRect) UnmarshalJSON(src []byte) (err error) {
	dec := json.NewDecoder(bytes.NewReader(src))
	var t json.Token
	for dec.More() && err == nil {
		if t, err = dec.Token(); err == nil {
			if _, check := t.(json.Delim); !check {
				switch t.(string) {
				case "x":
					err = dec.Decode(&s.x)
				case "y":
					err = dec.Decode(&s.y)
				case "dx":
					err = dec.Decode(&s.dx)
				case "dy":
					err = dec.Decode(&s.dy)
				case "styles":
					err = dec.Decode(&s.styles)
				default:
					err = dec.Decode(new(interface{}))
				}
			}
		}
	}
	return
}

//////////////////////////////////////////////////////////////////

type rectMerge struct {
	x, y   int
	dx, dy int
}

func (s *rectMerge) UnmarshalJSON(src []byte) (err error) {
	dec := json.NewDecoder(bytes.NewReader(src))
	var t json.Token
	for dec.More() && err == nil {
		if t, err = dec.Token(); err == nil {
			if _, check := t.(json.Delim); !check {
				switch t.(string) {
				case "x":
					err = dec.Decode(&s.x)
				case "y":
					err = dec.Decode(&s.y)
				case "dx":
					err = dec.Decode(&s.dx)
				case "dy":
					err = dec.Decode(&s.dy)
				default:
					err = dec.Decode(new(interface{}))
				}
			}
		}
	}
	return
}

//////////////////////////////////////////////////////////////

type rectWidths struct {
	x, dx int
	width float64
}

func (s *rectWidths) UnmarshalJSON(src []byte) (err error) {
	dec := json.NewDecoder(bytes.NewReader(src))
	var t json.Token
	for dec.More() && err == nil {
		if t, err = dec.Token(); err == nil {
			if _, check := t.(json.Delim); !check {
				switch t.(string) {
				case "x":
					err = dec.Decode(&s.x)
				case "dx":
					err = dec.Decode(&s.dx)
				case "width":
					err = dec.Decode(&s.width)
				default:
					err = dec.Decode(new(interface{}))
				}
			}
		}
	}
	return
}