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use serde::Deserialize;
use serde::Serialize;

use crate::lexer::token::Span;
use crate::parser::ast::attributes::AttributeGroup;
use crate::parser::ast::constant::ClassishConstant;
use crate::parser::ast::functions::Method;
use crate::parser::ast::identifiers::SimpleIdentifier;
use crate::parser::ast::Expression;

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct UnitEnumCase {
    pub start: Span,
    pub end: Span,
    pub attributes: Vec<AttributeGroup>,
    pub name: SimpleIdentifier,
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case", tag = "type", content = "value")]
pub enum UnitEnumMember {
    Case(UnitEnumCase),
    Method(Method),
    Constant(ClassishConstant),
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct UnitEnumBody {
    pub start: Span,
    pub end: Span,
    pub members: Vec<UnitEnumMember>,
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct UnitEnum {
    pub span: Span,
    pub name: SimpleIdentifier,
    pub attributes: Vec<AttributeGroup>,
    pub implements: Vec<SimpleIdentifier>,
    pub body: UnitEnumBody,
}

#[derive(Debug, Clone, Eq, PartialEq, Deserialize, Serialize)]
#[serde(tag = "type", content = "span")]
pub enum BackedEnumType {
    String(Span),
    Int(Span),
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct BackedEnumCase {
    pub start: Span,
    pub end: Span,
    pub name: SimpleIdentifier,
    pub attributes: Vec<AttributeGroup>,
    pub value: Expression,
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case", tag = "type", content = "value")]
pub enum BackedEnumMember {
    Case(BackedEnumCase),
    Method(Method),
    Constant(ClassishConstant),
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct BackedEnumBody {
    pub start: Span,
    pub end: Span,
    pub members: Vec<BackedEnumMember>,
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub struct BackedEnum {
    pub span: Span,
    pub name: SimpleIdentifier,
    pub attributes: Vec<AttributeGroup>,
    pub implements: Vec<SimpleIdentifier>,
    pub backed_type: BackedEnumType,
    pub body: BackedEnumBody,
}