doku 0.21.1

A framework for documenting Rust data structures
Documentation 
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use crate::*;

/// Determines which auto-comments - _hints_, so to say - should get displayed.
///
/// Sometimes Doku is able to automatically infer certain properties about a
/// type and provide a dedicated hint such as "this field is optional". This
/// struct allows to configure whether you'd like for such comments to be
/// printed or not.
#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct AutoComments {
    /// When set, displays hints for arrays of known sizes:
    ///
    /// ```
    /// use doku::Document;
    ///
    /// #[derive(Document)]
    /// struct Person {
    ///     friends: [String; 3],
    /// }
    ///
    /// let fmt = doku::toml::Formatting {
    ///     auto_comments: doku::toml::AutoComments {
    ///         array_size: true,
    ///         ..Default::default()
    ///     },
    ///     ..Default::default()
    /// };
    ///
    /// let doc = doku::to_toml_fmt::<Person>(&fmt);
    ///
    /// doku::assert_doc!(r#"
    ///   ## Must contain exactly 3 elements
    ///   friends = [
    ///     "string",
    ///     ## ...
    ///   ]
    /// "#, doc);
    /// ```
    pub array_size: bool,

    /// When set, displays hints for optional values:
    ///
    /// ```
    /// use doku::Document;
    ///
    /// #[derive(Document)]
    /// struct Person {
    ///     friend: Option<String>,
    /// }
    ///
    /// let fmt = doku::toml::Formatting {
    ///     auto_comments: doku::toml::AutoComments {
    ///         optional: true,
    ///         ..Default::default()
    ///     },
    ///     ..Default::default()
    /// };
    ///
    /// let doc = doku::to_toml_fmt::<Person>(&fmt);
    ///
    /// doku::assert_doc!(r#"
    ///   ## Optional
    ///   friend = "string"
    /// "#, doc);
    /// ```
    pub optional: bool,
}

impl AutoComments {
    pub fn all() -> Self {
        Self {
            array_size: true,
            optional: true,
        }
    }

    pub fn none() -> Self {
        Self {
            array_size: false,
            optional: false,
        }
    }
}

impl Default for AutoComments {
    fn default() -> Self {
        Self::all()
    }
}