use serde::{Deserialize, Serialize};

/// Unique identifier for a function within a program.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(transparent)]
pub struct FunctionId(pub u32);

/// Unique identifier for a constant value.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(transparent)]
pub struct ConstId(pub u32);

/// Unique identifier for a type.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(transparent)]
pub struct TypeId(pub u32);

/// Unique identifier for a value (usually a local slot).
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(transparent)]
pub struct ValueId(pub u32);

/// Unique identifier for a field within a HIP object.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(transparent)]
pub struct FieldId(pub u32);