1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159


use std::{marker::PhantomData};

use crate::rgb::RgbColor;
use crate::hsv::HsvColor;
use crate::hsl::HslColor;
use crate::converter::*;


pub struct ColorConverterBuilder{}
pub struct ColorConverterFromBuilder<TFrom>( PhantomData<TFrom> );
pub struct ColorConverterFromToBuilder<TFrom, TTo>( PhantomData<TFrom>, PhantomData<TTo>);

pub struct HtmlConverterFromBuilder{}

pub struct HtmlConverterFromToBuilder<TTo>(PhantomData<TTo> );


impl ColorConverterBuilder
{
    pub fn new() -> Self
    {
        ColorConverterBuilder{}
    }

    pub fn from_rgb(&self) -> ColorConverterFromBuilder<RgbColor>
    {
        ColorConverterFromBuilder(PhantomData)
    }

    pub fn from_hsv(&self) -> ColorConverterFromBuilder<HsvColor>
    {
        ColorConverterFromBuilder(PhantomData)
    }

    pub fn from_hsl(&self) -> ColorConverterFromBuilder<HslColor>
    {
        ColorConverterFromBuilder(PhantomData)
    }

    pub fn from_html(&self) -> HtmlConverterFromBuilder
    {
        HtmlConverterFromBuilder{}
    }
}

impl HtmlConverterFromBuilder
{
    pub fn to_rgb(&self) -> ColorConverterFromToBuilder<HtmlColorCode, RgbColor>
    {
        ColorConverterFromToBuilder(PhantomData,PhantomData)
    }

    pub fn to_hsv(&self) -> ColorConverterFromToBuilder<HtmlColorCode, HsvColor>
    {
        ColorConverterFromToBuilder(PhantomData,PhantomData)
    }

    pub fn to_hsl(&self) -> ColorConverterFromToBuilder<HtmlColorCode, HslColor>
    {
        ColorConverterFromToBuilder(PhantomData,PhantomData)
    }
}

#[allow(unused_macros)]
macro_rules! color_from_builder 
{
    ($from_name: ident) => {
        impl ColorConverterFromBuilder<$from_name>
        {
            pub fn to_rgb(&self) -> ColorConverterFromToBuilder<$from_name, RgbColor>
            {
                ColorConverterFromToBuilder(PhantomData,PhantomData)
            }
        
            pub fn to_hsv(&self) -> ColorConverterFromToBuilder<$from_name, HsvColor>
            {
                ColorConverterFromToBuilder(PhantomData,PhantomData)
            }
        
            pub fn to_hsl(&self) -> ColorConverterFromToBuilder<$from_name, HslColor>
            {
                ColorConverterFromToBuilder(PhantomData,PhantomData)
            }

            pub fn to_html(&self) -> ColorConverterFromToBuilder<$from_name, HtmlColorCode>
            {
                ColorConverterFromToBuilder(PhantomData,PhantomData)
            }
        }        
    };
}

#[allow(unused_macros)]
macro_rules! color_from_to_builder 
{
    ($converter_name: ident, $from_name: ident, $to_name: ident) => {
        impl ColorConverterFromToBuilder<$from_name, $to_name>
        {
            #[allow(dead_code)]
            pub fn build(&self) -> $converter_name
            {
                $converter_name{}
            }
        }
    };
}

color_from_builder!(RgbColor);
color_from_builder!(HsvColor);
color_from_builder!(HslColor);

color_from_to_builder!(RgbToRgbConverter,RgbColor,RgbColor);
color_from_to_builder!(RgbToHsvConverter,RgbColor,HsvColor);
color_from_to_builder!(RgbToHslConverter,RgbColor,HslColor);

color_from_to_builder!(HsvToRgbConverter,HsvColor,RgbColor);
color_from_to_builder!(HsvToHsvConverter,HsvColor,HsvColor);
color_from_to_builder!(HsvToHslConverter,HsvColor,HslColor);

color_from_to_builder!(HslToRgbConverter,HslColor,RgbColor);
color_from_to_builder!(HslToHsvConverter,HslColor,HsvColor);
color_from_to_builder!(HslToHslConverter,HslColor,HslColor);

color_from_to_builder!(HtmlToRgbConverter,HtmlColorCode,RgbColor);
color_from_to_builder!(HtmlToHsvConverter,HtmlColorCode,HsvColor);
color_from_to_builder!(HtmlToHslConverter,HtmlColorCode,HslColor);

color_from_to_builder!(RgbToHtmlConverter,RgbColor,HtmlColorCode);
color_from_to_builder!(HslToHtmlConverter,HsvColor,HtmlColorCode);
color_from_to_builder!(HsvToHtmlConverter,HslColor,HtmlColorCode);


#[cfg(test)]
mod tests
{
    use super::*;

    #[test]
    fn color_build_new_test() {
        let converter = ColorConverterBuilder::new().from_rgb().to_hsv().build();
        assert_eq!(converter.convert(&RgbColor::new(255,0,0)).unwrap(), HsvColor::new(0,100,100));

    }

    #[test]
    fn color_build_new_test2() {
        let converter = ColorConverterBuilder::new().from_rgb().to_html().build();
        assert_eq!(converter.convert(&RgbColor::new(255,0,0)).unwrap(), HtmlColorCode::new("#ff0000"));

    }

    #[test]
    fn color_build_new_test3() {
        let converter = ColorConverterBuilder::new().from_html().to_rgb().build();
        assert_eq!(converter.convert(&HtmlColorCode::new("#ff0000")).unwrap(), RgbColor::new(255,0,0));

    }
}