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    use crate::io;
    use super::{Deserialize, Serialize, Error, GlobalType, InitExpr};

    /// Global entry in the module.
    #[derive(Clone, Debug, PartialEq)]
    pub struct GlobalEntry {
    	global_type: GlobalType,
    	init_expr: InitExpr,
    }

    impl GlobalEntry {
    	/// New global entry.
    	pub fn new(global_type: GlobalType, init_expr: InitExpr) -> Self {
    		GlobalEntry {
    			global_type: global_type,
    			init_expr: init_expr,
    		}
    	}
    	/// Global type.
    	pub fn global_type(&self) -> &GlobalType { &self.global_type }
    	/// Initialization expression (instructions) for global.
    	pub fn init_expr(&self) -> &InitExpr { &self.init_expr }
    	/// Global type (mutable).
    	pub fn global_type_mut(&mut self) -> &mut GlobalType { &mut self.global_type }
    	/// Initialization expression (instructions) for global (mutable).
    	pub fn init_expr_mut(&mut self) -> &mut InitExpr { &mut self.init_expr }
    }

    impl Deserialize for GlobalEntry {
    	type Error = Error;

    	fn deserialize<R: io::Read>(reader: &mut R) -> Result<Self, Self::Error> {
    		let global_type = GlobalType::deserialize(reader)?;
    		let init_expr = InitExpr::deserialize(reader)?;

    		Ok(GlobalEntry {
    			global_type: global_type,
    			init_expr: init_expr,
    		})
    	}
    }

    impl Serialize for GlobalEntry {
    	type Error = Error;

    	fn serialize<W: io::Write>(self, writer: &mut W) -> Result<(), Self::Error> {
    		self.global_type.serialize(writer)?;
    		self.init_expr.serialize(writer)
    	}
    }

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