Crate fsqlite_func 

Built-in SQL function and extension trait surfaces.

This crate defines open, user-implementable traits for:

• scalar, aggregate, and window functions
• virtual table modules/cursors
• collation callbacks
• authorizer callbacks

It also provides a small in-memory FunctionRegistry for registering and resolving scalar/aggregate/window functions by (name, num_args) key with variadic fallback.

Re-exports

pub use agg_builtins::register_aggregate_builtins;

pub use aggregate::AggregateAdapter;

pub use aggregate::AggregateFunction;

pub use authorizer::AuthAction;

pub use authorizer::AuthResult;

pub use authorizer::Authorizer;

pub use authorizer::AuthorizerAction;

pub use authorizer::AuthorizerDecision;

pub use builtins::ChangeTrackingState;

pub use builtins::get_last_changes;

pub use builtins::get_last_insert_rowid;

pub use builtins::get_total_changes;

pub use builtins::register_builtins;

pub use builtins::reset_total_changes;

pub use builtins::set_change_tracking_state;

pub use builtins::set_last_changes;

pub use builtins::set_last_insert_rowid;

pub use collation::BinaryCollation;

pub use collation::CollationAnnotation;

pub use collation::CollationFunction;

pub use collation::CollationRegistry;

pub use collation::CollationSource;

pub use collation::NoCaseCollation;

pub use collation::RtrimCollation;

pub use collation::resolve_collation;

pub use datetime::register_datetime_builtins;

pub use math::register_math_builtins;

pub use scalar::ScalarFunction;

pub use vtab::ColumnContext;

pub use vtab::ConstraintOp;

pub use vtab::IndexConstraint;

pub use vtab::IndexConstraintUsage;

pub use vtab::IndexInfo;

pub use vtab::IndexOrderBy;

pub use vtab::VirtualTable;

pub use vtab::VirtualTableCursor;

pub use window::WindowAdapter;

pub use window::WindowFunction;

pub use window_builtins::register_window_builtins;

Modules

agg_builtins

Built-in aggregate functions (§13.4).

aggregate

Aggregate function trait with type-erased state adapter.

authorizer

Authorizer callback trait (§9.4).

builtins

Built-in core scalar functions (§13.1).

collation

Collation callback trait, built-in collations, and registry (§9.4, §13.6).

datetime

SQLite date/time functions (§13.3).

math

SQLite 3.35+ math functions (§13.2).

scalar

Scalar (row-level) function trait.

vtab

Virtual table and cursor traits (§9.3).

window

Window function trait with sliding-window support.

window_builtins

Built-in window functions (S13.5, bd-14i6).

Structs

FuncMetricsSnapshot

Snapshot of function evaluation metrics.

FunctionKey

Composite lookup key for functions: (UPPERCASE name, num_args).

FunctionRegistry

Registry for scalar, aggregate, and window functions, keyed by (name, num_args).

Functions

func_metrics_snapshot

Read a point-in-time snapshot of function evaluation metrics.

record_func_call

Record a function call for metrics (called from VDBE engine).

record_func_call_count_only

Record a function call count only, without timing (fast path).

record_udf_registered

Record a UDF registration event.

reset_func_metrics

Reset function metrics to zero (tests/diagnostics).

reset_udf_metrics

Reset UDF registration counter (tests/diagnostics).

udf_registered_count

Current count of UDF registrations.

Type Aliases

ErasedAggregateFunction

Type-erased aggregate function object used by the registry.

ErasedWindowFunction

Type-erased window function object used by the registry.