charming 0.6.0

A visualization library for Rust
Documentation 
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use serde::{Deserialize, Deserializer, Serialize};

#[derive(Debug, PartialEq, PartialOrd, Clone)]
pub enum Icon {
    Circle,
    Rect,
    RoundRect,
    Triangle,
    Diamond,
    Pin,
    Arrow,
    None,
    Custom(String),
}

impl Serialize for Icon {
    fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
        match self {
            Icon::Circle => serializer.serialize_str("circle"),
            Icon::Rect => serializer.serialize_str("rect"),
            Icon::RoundRect => serializer.serialize_str("roundRect"),
            Icon::Triangle => serializer.serialize_str("triangle"),
            Icon::Diamond => serializer.serialize_str("diamond"),
            Icon::Pin => serializer.serialize_str("pin"),
            Icon::Arrow => serializer.serialize_str("arrow"),
            Icon::None => serializer.serialize_str("none"),
            Icon::Custom(s) => serializer.serialize_str(s),
        }
    }
}

impl<'de> Deserialize<'de> for Icon {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        struct IconVisitor;

        impl serde::de::Visitor<'_> for IconVisitor {
            type Value = Icon;

            fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
                formatter.write_str("a string representing an icon")
            }

            fn visit_str<E>(self, value: &str) -> Result<Icon, E>
            where
                E: serde::de::Error,
            {
                match value {
                    "circle" => Ok(Icon::Circle),
                    "rect" => Ok(Icon::Rect),
                    "roundRect" => Ok(Icon::RoundRect),
                    "triangle" => Ok(Icon::Triangle),
                    "diamond" => Ok(Icon::Diamond),
                    "pin" => Ok(Icon::Pin),
                    "arrow" => Ok(Icon::Arrow),
                    "none" => Ok(Icon::None),
                    custom => Ok(Icon::Custom(custom.to_string())),
                }
            }
        }

        deserializer.deserialize_str(IconVisitor)
    }
}

impl<S> From<S> for Icon
where
    S: Into<String>,
{
    fn from(s: S) -> Self {
        let s = s.into();
        match s.as_str() {
            "circle" => Icon::Circle,
            "rect" => Icon::Rect,
            "roundRect" => Icon::RoundRect,
            "triangle" => Icon::Triangle,
            "diamond" => Icon::Diamond,
            "pin" => Icon::Pin,
            "arrow" => Icon::Arrow,
            "none" => Icon::None,
            _ => Icon::Custom(s),
        }
    }
}