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FieldPtr

dotscope::metadata::tables

Struct FieldPtr 

pub struct FieldPtr {
    pub rid: u32,
    pub token: Token,
    pub offset: usize,
    pub field: u32,
}
Expand description

Represents a field pointer with resolved references and owned data.

A field pointer provides indirection for field access, mapping logical field indexes to physical Field table entries. This indirection is used when the logical field order (as seen in source code) differs from the physical storage order in metadata tables.

§Indirection Context

Field pointers are used in optimization scenarios:

  • Field reordering: Physical layout optimization for cache efficiency
  • Metadata compression: Strategic field organization to reduce metadata size
  • Incremental compilation: Stable references during development iterations
  • Edit-and-continue: Adding fields without breaking existing references
  • Platform optimization: Field ordering based on target platform characteristics

§ECMA-335 Reference

See ECMA-335, Partition II, §22.18 for the complete FieldPtr table specification.

Fields§

§rid: u32

The row identifier in the FieldPtr table.

This 1-based index uniquely identifies this field pointer within the FieldPtr table. The RID represents the logical field index used for indirection.

§token: Token

The metadata token for this field pointer.

A crate::metadata::token::Token that uniquely identifies this field pointer across the entire assembly. The token encodes both the table type (FieldPtr) and the row ID.

§offset: usize

The byte offset of this field pointer in the metadata tables stream.

This offset points to the start of this pointer’s row data within the metadata tables stream, used for binary parsing and navigation.

§field: u32

Index into the Field table for the actual field definition.

A 1-based index pointing to the physical Field table entry that this pointer references. This provides the indirection from logical field index (RID) to physical field location.

§Indirection Mapping

  • Logical index: The RID of this FieldPtr entry
  • Physical index: This field value pointing to Field table
  • Resolution: FieldPtr[logical_index].field → Field[physical_index]

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