Struct WireStructsCursor 

pub struct WireStructsCursor<'a> { /* private fields */ }

A parse-once cursor over a record-list view (T_STRUCTS_VIEW / T_STRUCTS_FVIEW): the schema and tables are read ONCE at open, then every (row, field) access is O(1) — pure arithmetic for the fixed-stride view, a two-u32 offset jump for the variable view — with no per-call re-scan.

Implementations

impl<'a> WireStructsCursor<'a>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn field_count(&self) -> usize

pub fn field_index(&self, name: &str) -> Option<usize>

Index of the field named name, scanned once by the caller and then reused for every row.

pub fn value(&self, row: usize, fi: usize) -> Option<RuntimeValue>

The (row, field) value as an owned RuntimeValue — O(1), no header re-scan.

pub fn i64_column(&self, fi: usize) -> Option<Vec<i64>>

Read an ENTIRE int field of the fixed-stride view as a Vec<i64> in one tight pass — the Cap’n-Proto-class read-all: the cells are at a fixed offset every stride bytes, so after one bounds check on the last cell, the reads are unchecked raw 8-byte loads (no per-read bounds check, no slice indirection, no RuntimeValue box). None for the variable view (varint cells aren’t strided) or a non-int field.

pub fn i64(&self, row: usize, fi: usize) -> Option<i64>

Fast integer read of an int cell — the Cap’n-Proto-class random read: pure arithmetic + a raw 8-byte read (fixed view) or a tagged-varint decode (variable view), NO RuntimeValue box. None if the cell is not an integer.