Struct PreflightContext 

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

Preflight context for validation

Provides read-only access to state during preflight phase. Only keys declared via Transaction::keys() can be accessed.

Implementations

impl<'a> PreflightContext<'a>

pub fn get(&self, key: &[u8]) -> Result<TypedValue>

Get a typed value from state

Errors

Returns UndeclaredKeyAccess if the key was not declared via keys().

pub fn get_opt(&self, key: &[u8]) -> Result<Option<TypedValue>>

Get a typed value, returning None if key doesn’t exist

Errors

Returns UndeclaredKeyAccess if the key was not declared via keys().

pub fn exists(&self, key: &[u8]) -> Result<bool>

Check if key exists

Errors

Returns UndeclaredKeyAccess if the key was not declared via keys().