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use mlua::UserData;

use crate::app::asm::assembly_line::AssemblyLine;

#[derive(Debug, Clone)]
pub struct InstructionInfo {
    pub instruction: String,
    pub physical_address: u64,
    pub virtual_address: u64,
    pub size: usize,
}

impl InstructionInfo {
    pub fn new(
        instruction: impl Into<String>,
        physical_address: u64,
        virtual_address: u64,
        size: usize,
    ) -> Self {
        Self {
            instruction: instruction.into(),
            physical_address,
            virtual_address,
            size,
        }
    }
}

impl From<&AssemblyLine> for InstructionInfo {
    fn from(value: &AssemblyLine) -> Self {
        match value {
            AssemblyLine::Instruction(i) => InstructionInfo::new(
                i.instruction.to_string(),
                i.file_address,
                i.instruction.ip(),
                i.instruction.len(),
            ),
            AssemblyLine::SectionTag(s) => InstructionInfo::new(
                format!(".{}:", s.name),
                s.file_address,
                s.virtual_address,
                s.size,
            ),
        }
    }
}

impl UserData for InstructionInfo {
    fn add_fields<'lua, F: mlua::UserDataFields<'lua, Self>>(fields: &mut F) {
        fields.add_field_method_get("instruction", |_lua, this| Ok(this.instruction.clone()));
        fields.add_field_method_get("physical_address", |_lua, this| Ok(this.physical_address));
        fields.add_field_method_get("virtual_address", |_lua, this| Ok(this.virtual_address));
        fields.add_field_method_get("size", |_lua, this| Ok(this.size));
    }
}