fhir-types 0.1.16

// @generated by fhir-codegen from hl7.fhir.r4b.core 4.3.0. DO NOT EDIT.
// Change the emitter (tools/fhir-codegen) and regenerate.
//! Describes the context of use for a conformance or knowledge resource

/// Describes the context of use for a conformance or knowledge resource
///
/// Specifies clinical/business/etc. metadata that can be used to retrieve,
/// index and/or categorize an artifact. This metadata can either be specific to
/// the applicable population (e.g., age category, DRG) or the specific context
/// of care (e.g., venue, care setting, provider of care).
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct UsageContext {
    /// Unique id for inter-element referencing
    ///
    /// Unique id for the element within a resource (for internal references). This
    /// may be any string value that does not contain spaces.
    pub id: Option<std::string::String>,
    /// Additional content defined by implementations
    ///
    /// May be used to represent additional information that is not part of the
    /// basic definition of the element. To make the use of extensions safe and
    /// manageable, there is a strict set of governance applied to the definition
    /// and use of extensions. Though any implementer can define an extension, there
    /// is a set of requirements that SHALL be met as part of the definition of the
    /// extension.
    pub extension: Vec<super::extension::Extension>,
    /// Type of context being specified
    ///
    /// A code that identifies the type of context being specified by this usage
    /// context.
    pub code: super::coding::Coding,
    /// Value that defines the context
    ///
    /// A value that defines the context specified in this context of use. The
    /// interpretation of the value is defined by the code.
    pub value: UsageContextValue,
}

impl super::super::codec::Json for UsageContext {
    fn to_json(&self) -> Result<super::super::codec::Object, super::super::codec::EncodeError> {
        let mut object = super::super::codec::Object::new();
        if let Some(v) = &self.id {
            object.insert(
                std::string::String::from("id"),
                serde_json::Value::String(v.clone()),
            );
        }
        if !self.extension.is_empty() {
            let mut items = Vec::with_capacity(self.extension.len());
            for item in &self.extension {
                items.push(serde_json::Value::Object(
                    super::super::codec::Json::to_json(item)?,
                ));
            }
            object.insert(
                std::string::String::from("extension"),
                serde_json::Value::Array(items),
            );
        }
        object.insert(
            std::string::String::from("code"),
            serde_json::Value::Object(super::super::codec::Json::to_json(&self.code)?),
        );
        let (suffix, value, element) = self.value.to_json_parts()?;
        if let Some(value) = value {
            object.insert(format!("value{suffix}"), value);
        }
        if let Some(element) = element {
            object.insert(format!("_value{suffix}"), element);
        }
        Ok(object)
    }

    fn from_json(
        object: &super::super::codec::Object,
        path: &mut super::super::codec::Path,
    ) -> Result<Self, super::super::codec::DecodeError> {
        let mut raw_id: Option<&serde_json::Value> = None;
        let mut raw_extension: Option<&serde_json::Value> = None;
        let mut raw_code: Option<&serde_json::Value> = None;
        let mut raw_value = super::super::codec::ChoiceSlot::default();
        for (key, value) in object {
            match key.as_str() {
                "id" => raw_id = Some(value),
                "extension" => raw_extension = Some(value),
                "code" => raw_code = Some(value),
                "valueCodeableConcept" => {
                    raw_value.value("CodeableConcept", value, path)?;
                }
                "_valueCodeableConcept" => {
                    raw_value.element("CodeableConcept", value, path)?;
                }
                "valueQuantity" => {
                    raw_value.value("Quantity", value, path)?;
                }
                "_valueQuantity" => {
                    raw_value.element("Quantity", value, path)?;
                }
                "valueRange" => {
                    raw_value.value("Range", value, path)?;
                }
                "_valueRange" => {
                    raw_value.element("Range", value, path)?;
                }
                "valueReference" => {
                    raw_value.value("Reference", value, path)?;
                }
                "_valueReference" => {
                    raw_value.element("Reference", value, path)?;
                }
                other => {
                    return path.with(other, |path| {
                        Err(path.error(super::super::codec::DecodeErrorKind::UnknownProperty))
                    });
                }
            }
        }
        let field_id = raw_id
            .map(|value| {
                path.with("id", |path| {
                    let value = super::super::codec::expect_single(value, path)?;
                    super::super::codec::expect_string(value, path)
                })
            })
            .transpose()?;
        let mut field_extension = Vec::new();
        if let Some(raw) = raw_extension {
            for (index, value) in super::super::codec::expect_array(raw, path)?
                .iter()
                .enumerate()
            {
                field_extension.push(path.with_index("extension", index, |path| {
                    super::super::codec::Json::from_json(
                        super::super::codec::expect_object(value, path)?,
                        path,
                    )
                })?);
            }
        }
        let field_code = path.with("code", |path| {
            let value = raw_code
                .ok_or_else(|| path.error(super::super::codec::DecodeErrorKind::MissingProperty))?;
            super::super::codec::Json::from_json(
                super::super::codec::expect_object(
                    super::super::codec::expect_single(value, path)?,
                    path,
                )?,
                path,
            )
        })?;
        let field_value = path.with("value", |path| {
            let suffix = raw_value
                .suffix
                .ok_or_else(|| path.error(super::super::codec::DecodeErrorKind::MissingProperty))?;
            UsageContextValue::from_json_parts(suffix, raw_value.value, raw_value.element, path)
        })?;
        Ok(Self {
            id: field_id,
            extension: field_extension,
            code: field_code,
            value: field_value,
        })
    }
}

impl serde::Serialize for UsageContext {
    fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
        super::super::codec::Json::to_json(self)
            .map_err(serde::ser::Error::custom)?
            .serialize(serializer)
    }
}

impl<'de> serde::Deserialize<'de> for UsageContext {
    fn deserialize<D: serde::Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
        let value = serde_json::Value::deserialize(deserializer)?;
        let mut path = super::super::codec::Path::root("UsageContext");
        let object =
            super::super::codec::expect_object(&value, &path).map_err(serde::de::Error::custom)?;
        super::super::codec::Json::from_json(object, &mut path).map_err(serde::de::Error::custom)
    }
}

/// The \`value\[x\]\` choice of \`UsageContext\`.
///
/// A value that defines the context specified in this context of use. The
/// interpretation of the value is defined by the code.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum UsageContextValue {
    /// The `CodeableConcept` form.
    CodeableConcept(super::codeable_concept::CodeableConcept),
    /// The `Quantity` form.
    Quantity(super::quantity::Quantity),
    /// The `Range` form.
    Range(super::range::Range),
    /// The `Reference` form.
    Reference(super::reference::Reference),
}

impl UsageContextValue {
    /// The key suffix, the value part, and the `_name` part of this form.
    ///
    /// # Errors
    ///
    /// Returns [`super::super::codec::EncodeError`] when a held value has no JSON form.
    pub fn to_json_parts(
        &self,
    ) -> Result<
        (
            &'static str,
            Option<serde_json::Value>,
            Option<serde_json::Value>,
        ),
        super::super::codec::EncodeError,
    > {
        match self {
            Self::CodeableConcept(inner) => Ok((
                "CodeableConcept",
                Some(serde_json::Value::Object(
                    super::super::codec::Json::to_json(inner)?,
                )),
                None,
            )),
            Self::Quantity(inner) => Ok((
                "Quantity",
                Some(serde_json::Value::Object(
                    super::super::codec::Json::to_json(inner)?,
                )),
                None,
            )),
            Self::Range(inner) => Ok((
                "Range",
                Some(serde_json::Value::Object(
                    super::super::codec::Json::to_json(inner)?,
                )),
                None,
            )),
            Self::Reference(inner) => Ok((
                "Reference",
                Some(serde_json::Value::Object(
                    super::super::codec::Json::to_json(inner)?,
                )),
                None,
            )),
        }
    }

    /// Decodes the form named by `suffix` from its value and `_name` parts.
    ///
    /// # Errors
    ///
    /// Returns [`super::super::codec::DecodeError`] for an unknown suffix or a malformed part.
    pub fn from_json_parts(
        suffix: &str,
        value: Option<&serde_json::Value>,
        element: Option<&serde_json::Value>,
        path: &mut super::super::codec::Path,
    ) -> Result<Self, super::super::codec::DecodeError> {
        match suffix {
            "CodeableConcept" => {
                if element.is_some() {
                    return Err(path.error(super::super::codec::DecodeErrorKind::WrongType {
                        expected: "no underscore form for a complex type",
                    }));
                }
                let value = value.ok_or_else(|| {
                    path.error(super::super::codec::DecodeErrorKind::MissingProperty)
                })?;
                let inner = super::super::codec::Json::from_json(
                    super::super::codec::expect_object(
                        super::super::codec::expect_single(value, path)?,
                        path,
                    )?,
                    path,
                )?;
                Ok(Self::CodeableConcept(inner))
            }
            "Quantity" => {
                if element.is_some() {
                    return Err(path.error(super::super::codec::DecodeErrorKind::WrongType {
                        expected: "no underscore form for a complex type",
                    }));
                }
                let value = value.ok_or_else(|| {
                    path.error(super::super::codec::DecodeErrorKind::MissingProperty)
                })?;
                let inner = super::super::codec::Json::from_json(
                    super::super::codec::expect_object(
                        super::super::codec::expect_single(value, path)?,
                        path,
                    )?,
                    path,
                )?;
                Ok(Self::Quantity(inner))
            }
            "Range" => {
                if element.is_some() {
                    return Err(path.error(super::super::codec::DecodeErrorKind::WrongType {
                        expected: "no underscore form for a complex type",
                    }));
                }
                let value = value.ok_or_else(|| {
                    path.error(super::super::codec::DecodeErrorKind::MissingProperty)
                })?;
                let inner = super::super::codec::Json::from_json(
                    super::super::codec::expect_object(
                        super::super::codec::expect_single(value, path)?,
                        path,
                    )?,
                    path,
                )?;
                Ok(Self::Range(inner))
            }
            "Reference" => {
                if element.is_some() {
                    return Err(path.error(super::super::codec::DecodeErrorKind::WrongType {
                        expected: "no underscore form for a complex type",
                    }));
                }
                let value = value.ok_or_else(|| {
                    path.error(super::super::codec::DecodeErrorKind::MissingProperty)
                })?;
                let inner = super::super::codec::Json::from_json(
                    super::super::codec::expect_object(
                        super::super::codec::expect_single(value, path)?,
                        path,
                    )?,
                    path,
                )?;
                Ok(Self::Reference(inner))
            }
            _ => Err(path.error(super::super::codec::DecodeErrorKind::UnknownProperty)),
        }
    }
}