Function statement_gen 

pub fn statement_gen<'a>(
    evm_version: &EVMVersion,
    s: &Statement,
    contract: &'a Contract,
    macro_def: &'a MacroDefinition,
    scope_mgr: &mut ScopeManager<'a>,
    offset: &mut usize,
    jump_table: &mut JumpTable,
    label_indices: &mut LabelIndices,
    table_instances: &mut Jumps,
    utilized_tables: &mut Vec<TableDefinition>,
    embedded_tables: &mut BTreeMap<String, usize>,
    starting_offset: usize,
    relax_jumps: bool,
) -> Result<(BytecodeSegments, Vec<Option<(usize, usize)>>), CodegenError>

Generates the respective Bytecode for a given Statement Returns a tuple of (bytes, spans) where spans are optional source positions