Macro create_table_match 

macro_rules! create_table_match {
    ($table_type_var:expr, $data:expr, $rows:expr, $info:expr, $offset:expr, $(($id:path, $raw:ty, $variant:ident)),* $(,)?) => { ... };
}

Generate the complete match expression for creating metadata tables in TablesHeader::add_table().

This macro eliminates the repetitive match arm patterns that would otherwise require ~380 lines of nearly identical code. It generates a complete match expression that handles all table types, where each arm:

1. Creates a MetadataTable of the specified type
2. Updates the offset by the table’s size
3. Wraps the table in the appropriate TableData variant

Arguments

• $table_type_var - The variable containing the TableId to match against
• $data - The data slice to parse from
• $rows - The number of rows in the table
• $info - The TableInfo for column size calculation
• $offset - Mutable reference to the current offset
• $(($id:path, $raw:ty, $variant:ident)),* - List of (TableId variant, Raw type, TableData variant) tuples

Size Calculation

The macro casts table.size() (which returns u64) to usize for offset arithmetic. This is safe because:

• PE files are limited to ~4GB, constraining maximum metadata size
• On 64-bit systems, usize can hold any valid table size
• On 32-bit systems, the 4GB PE limit ensures no truncation occurs

Example

let table = create_table_match!(
    table_type, data, t_info.rows, self.info.clone(), current_offset,
    (TableId::Module, ModuleRaw, Module),
    (TableId::TypeRef, TypeRefRaw, TypeRef),
    // ... additional entries
);